1

composer.json

@@ -16,7 +16,7 @@
     "ext-iconv": "*",
     "ext-openssl": "*",
     "ext-mbstring": "*",
-    "endroid/qr-code": "^1.9",
+    "endroid/qr-code": "^3.9",
     "topthink/framework": "5.1.*",
     "zoujingli/ip2region": "^1.0",
     "zoujingli/think-library": "5.1.x-dev",

vendor/bacon/bacon-qr-code/CHANGELOG.md

@@ -0,0 +1,51 @@
+# Changelog
+
+All notable changes to this project will be documented in this file, in reverse chronological order by release.
+
+## 2.0.2 - 2020-07-30
+
+### Changed
+
+- [#71](https://github.com/Bacon/BaconQrCode/issues/71) Upgrade phpunit.
+- [#71](https://github.com/Bacon/BaconQrCode/issues/71) Allow tests in vendor bundles for Debian packaging.
+- [#71](https://github.com/Bacon/BaconQrCode/issues/71) Update TravisCI config file.
+
+## 2.0.1 - 2020-07-14
+
+### Fixed
+
+- [#69](https://github.com/Bacon/BaconQrCode/pull/69) SimpleCircleEye Class not working properly.
+
+## 2.0.0 - 2018-04-25
+
+### Added
+
+- [#25](https://github.com/Bacon/BaconQrCode/pull/25) allows for setting a more compact text output
+
+- CHANGELOG.md added (how meta)
+
+- Allows more complex shapes for modules
+
+- Allows setting a gradient for the foreground
+
+- Allows transparent backgrounds and alpha channel on all colors
+
+### Changed
+
+- Minimum PHP version changed to 7.1
+
+- Imagick renderer now allows setting different output formats
+
+- New optimized SVG renderer
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Legacy ZF module support removed
+
+### Fixed
+
+- Non-release files are excluded from composer packages

vendor/bacon/bacon-qr-code/LICENSE

@@ -0,0 +1,22 @@
+Copyright (c) 2017, Ben Scholzen 'DASPRiD'
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/bacon/bacon-qr-code/README.md

@@ -0,0 +1,39 @@
+# QR Code generator
+
+[![Build Status](https://api.travis-ci.org/Bacon/BaconQrCode.png?branch=master)](http://travis-ci.org/Bacon/BaconQrCode)
+[![Coverage Status](https://coveralls.io/repos/github/Bacon/BaconQrCode/badge.svg?branch=master)](https://coveralls.io/github/Bacon/BaconQrCode?branch=master)
+[![Latest Stable Version](https://poser.pugx.org/bacon/bacon-qr-code/v/stable)](https://packagist.org/packages/bacon/bacon-qr-code)
+[![Total Downloads](https://poser.pugx.org/bacon/bacon-qr-code/downloads)](https://packagist.org/packages/bacon/bacon-qr-code)
+[![License](https://poser.pugx.org/bacon/bacon-qr-code/license)](https://packagist.org/packages/bacon/bacon-qr-code)
+
+
+## Introduction
+BaconQrCode is a port of QR code portion of the ZXing library. It currently
+only features the encoder part, but could later receive the decoder part as
+well.
+
+As the Reed Solomon codec implementation of the ZXing library performs quite
+slow in PHP, it was exchanged with the implementation by Phil Karn.
+
+
+## Example usage
+```php
+use BaconQrCode\Renderer\ImageRenderer;
+use BaconQrCode\Renderer\Image\ImagickImageBackEnd;
+use BaconQrCode\Renderer\RendererStyle\RendererStyle;
+use BaconQrCode\Writer;
+
+$renderer = new ImageRenderer(
+    new RendererStyle(400),
+    new ImagickImageBackEnd()
+);
+$writer = new Writer($renderer);
+$writer->writeFile('Hello World!', 'qrcode.png');
+```
+
+## Available image renderer back ends
+BaconQrCode comes with multiple back ends for rendering images. Currently included are the following:
+
+- `ImagickImageBackEnd`: renders raster images using the Imagick library
+- `SvgImageBackEnd`: renders SVG files using XMLWriter
+- `EpsImageBackEnd`: renders EPS files

vendor/bacon/bacon-qr-code/composer.json

@@ -0,0 +1,32 @@
+{
+    "name": "bacon/bacon-qr-code",
+    "description": "BaconQrCode is a QR code generator for PHP.",
+    "license" : "BSD-2-Clause",
+    "homepage": "https://github.com/Bacon/BaconQrCode",
+    "require": {
+        "php": "^7.1 || ^8.0",
+        "ext-iconv": "*",
+        "dasprid/enum": "^1.0.3"
+    },
+    "suggest": {
+        "ext-imagick": "to generate QR code images"
+    },
+    "authors": [
+        {
+            "name": "Ben Scholzen 'DASPRiD'",
+            "email": "mail@dasprids.de",
+            "homepage": "https://dasprids.de/",
+            "role": "Developer"
+        }
+    ],
+    "autoload": {
+        "psr-4": {
+            "BaconQrCode\\": "src/"
+        }
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^7 | ^8 | ^9",
+        "squizlabs/php_codesniffer": "^3.4",
+        "phly/keep-a-changelog": "^1.4"
+    }
+}

vendor/bacon/bacon-qr-code/phpunit.xml.dist

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         colors="true">
+    <testsuites>
+        <testsuite name="BaconQrCode Tests">
+            <directory>./test</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist processUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">src</directory>
+        </whitelist>
+    </filter>
+</phpunit>

vendor/bacon/bacon-qr-code/src/Common/BitArray.php

@@ -0,0 +1,372 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Common;
+
+use BaconQrCode\Exception\InvalidArgumentException;
+use SplFixedArray;
+
+/**
+ * A simple, fast array of bits.
+ */
+final class BitArray
+{
+    /**
+     * Bits represented as an array of integers.
+     *
+     * @var SplFixedArray<int>
+     */
+    private $bits;
+
+    /**
+     * Size of the bit array in bits.
+     *
+     * @var int
+     */
+    private $size;
+
+    /**
+     * Creates a new bit array with a given size.
+     */
+    public function __construct(int $size = 0)
+    {
+        $this->size = $size;
+        $this->bits = SplFixedArray::fromArray(array_fill(0, ($this->size + 31) >> 3, 0));
+    }
+
+    /**
+     * Gets the size in bits.
+     */
+    public function getSize() : int
+    {
+        return $this->size;
+    }
+
+    /**
+     * Gets the size in bytes.
+     */
+    public function getSizeInBytes() : int
+    {
+        return ($this->size + 7) >> 3;
+    }
+
+    /**
+     * Ensures that the array has a minimum capacity.
+     */
+    public function ensureCapacity(int $size) : void
+    {
+        if ($size > count($this->bits) << 5) {
+            $this->bits->setSize(($size + 31) >> 5);
+        }
+    }
+
+    /**
+     * Gets a specific bit.
+     */
+    public function get(int $i) : bool
+    {
+        return 0 !== ($this->bits[$i >> 5] & (1 << ($i & 0x1f)));
+    }
+
+    /**
+     * Sets a specific bit.
+     */
+    public function set(int $i) : void
+    {
+        $this->bits[$i >> 5] = $this->bits[$i >> 5] | 1 << ($i & 0x1f);
+    }
+
+    /**
+     * Flips a specific bit.
+     */
+    public function flip(int $i) : void
+    {
+        $this->bits[$i >> 5] ^= 1 << ($i & 0x1f);
+    }
+
+    /**
+     * Gets the next set bit position from a given position.
+     */
+    public function getNextSet(int $from) : int
+    {
+        if ($from >= $this->size) {
+            return $this->size;
+        }
+
+        $bitsOffset = $from >> 5;
+        $currentBits = $this->bits[$bitsOffset];
+        $bitsLength = count($this->bits);
+        $currentBits &= ~((1 << ($from & 0x1f)) - 1);
+
+        while (0 === $currentBits) {
+            if (++$bitsOffset === $bitsLength) {
+                return $this->size;
+            }
+
+            $currentBits = $this->bits[$bitsOffset];
+        }
+
+        $result = ($bitsOffset << 5) + BitUtils::numberOfTrailingZeros($currentBits);
+        return $result > $this->size ? $this->size : $result;
+    }
+
+    /**
+     * Gets the next unset bit position from a given position.
+     */
+    public function getNextUnset(int $from) : int
+    {
+        if ($from >= $this->size) {
+            return $this->size;
+        }
+
+        $bitsOffset = $from >> 5;
+        $currentBits = ~$this->bits[$bitsOffset];
+        $bitsLength = count($this->bits);
+        $currentBits &= ~((1 << ($from & 0x1f)) - 1);
+
+        while (0 === $currentBits) {
+            if (++$bitsOffset === $bitsLength) {
+                return $this->size;
+            }
+
+            $currentBits = ~$this->bits[$bitsOffset];
+        }
+
+        $result = ($bitsOffset << 5) + BitUtils::numberOfTrailingZeros($currentBits);
+        return $result > $this->size ? $this->size : $result;
+    }
+
+    /**
+     * Sets a bulk of bits.
+     */
+    public function setBulk(int $i, int $newBits) : void
+    {
+        $this->bits[$i >> 5] = $newBits;
+    }
+
+    /**
+     * Sets a range of bits.
+     *
+     * @throws InvalidArgumentException if end is smaller than start
+     */
+    public function setRange(int $start, int $end) : void
+    {
+        if ($end < $start) {
+            throw new InvalidArgumentException('End must be greater or equal to start');
+        }
+
+        if ($end === $start) {
+            return;
+        }
+
+        --$end;
+
+        $firstInt = $start >> 5;
+        $lastInt = $end >> 5;
+
+        for ($i = $firstInt; $i <= $lastInt; ++$i) {
+            $firstBit = $i > $firstInt ? 0 : $start & 0x1f;
+            $lastBit = $i < $lastInt ? 31 : $end & 0x1f;
+
+            if (0 === $firstBit && 31 === $lastBit) {
+                $mask = 0x7fffffff;
+            } else {
+                $mask = 0;
+
+                for ($j = $firstBit; $j < $lastBit; ++$j) {
+                    $mask |= 1 << $j;
+                }
+            }
+
+            $this->bits[$i] = $this->bits[$i] | $mask;
+        }
+    }
+
+    /**
+     * Clears the bit array, unsetting every bit.
+     */
+    public function clear() : void
+    {
+        $bitsLength = count($this->bits);
+
+        for ($i = 0; $i < $bitsLength; ++$i) {
+            $this->bits[$i] = 0;
+        }
+    }
+
+    /**
+     * Checks if a range of bits is set or not set.
+
+     * @throws InvalidArgumentException if end is smaller than start
+     */
+    public function isRange(int $start, int $end, bool $value) : bool
+    {
+        if ($end < $start) {
+            throw new InvalidArgumentException('End must be greater or equal to start');
+        }
+
+        if ($end === $start) {
+            return true;
+        }
+
+        --$end;
+
+        $firstInt = $start >> 5;
+        $lastInt = $end >> 5;
+
+        for ($i = $firstInt; $i <= $lastInt; ++$i) {
+            $firstBit = $i > $firstInt ? 0 : $start & 0x1f;
+            $lastBit = $i < $lastInt ? 31 : $end & 0x1f;
+
+            if (0 === $firstBit && 31 === $lastBit) {
+                $mask = 0x7fffffff;
+            } else {
+                $mask = 0;
+
+                for ($j = $firstBit; $j <= $lastBit; ++$j) {
+                    $mask |= 1 << $j;
+                }
+            }
+
+            if (($this->bits[$i] & $mask) !== ($value ? $mask : 0)) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Appends a bit to the array.
+     */
+    public function appendBit(bool $bit) : void
+    {
+        $this->ensureCapacity($this->size + 1);
+
+        if ($bit) {
+            $this->bits[$this->size >> 5] = $this->bits[$this->size >> 5] | (1 << ($this->size & 0x1f));
+        }
+
+        ++$this->size;
+    }
+
+    /**
+     * Appends a number of bits (up to 32) to the array.
+
+     * @throws InvalidArgumentException if num bits is not between 0 and 32
+     */
+    public function appendBits(int $value, int $numBits) : void
+    {
+        if ($numBits < 0 || $numBits > 32) {
+            throw new InvalidArgumentException('Num bits must be between 0 and 32');
+        }
+
+        $this->ensureCapacity($this->size + $numBits);
+
+        for ($numBitsLeft = $numBits; $numBitsLeft > 0; $numBitsLeft--) {
+            $this->appendBit((($value >> ($numBitsLeft - 1)) & 0x01) === 1);
+        }
+    }
+
+    /**
+     * Appends another bit array to this array.
+     */
+    public function appendBitArray(self $other) : void
+    {
+        $otherSize = $other->getSize();
+        $this->ensureCapacity($this->size + $other->getSize());
+
+        for ($i = 0; $i < $otherSize; ++$i) {
+            $this->appendBit($other->get($i));
+        }
+    }
+
+    /**
+     * Makes an exclusive-or comparision on the current bit array.
+     *
+     * @throws InvalidArgumentException if sizes don't match
+     */
+    public function xorBits(self $other) : void
+    {
+        $bitsLength = count($this->bits);
+        $otherBits  = $other->getBitArray();
+
+        if ($bitsLength !== count($otherBits)) {
+            throw new InvalidArgumentException('Sizes don\'t match');
+        }
+
+        for ($i = 0; $i < $bitsLength; ++$i) {
+            $this->bits[$i] = $this->bits[$i] ^ $otherBits[$i];
+        }
+    }
+
+    /**
+     * Converts the bit array to a byte array.
+     *
+     * @return SplFixedArray<int>
+     */
+    public function toBytes(int $bitOffset, int $numBytes) : SplFixedArray
+    {
+        $bytes = new SplFixedArray($numBytes);
+
+        for ($i = 0; $i < $numBytes; ++$i) {
+            $byte = 0;
+
+            for ($j = 0; $j < 8; ++$j) {
+                if ($this->get($bitOffset)) {
+                    $byte |= 1 << (7 - $j);
+                }
+
+                ++$bitOffset;
+            }
+
+            $bytes[$i] = $byte;
+        }
+
+        return $bytes;
+    }
+
+    /**
+     * Gets the internal bit array.
+     *
+     * @return SplFixedArray<int>
+     */
+    public function getBitArray() : SplFixedArray
+    {
+        return $this->bits;
+    }
+
+    /**
+     * Reverses the array.
+     */
+    public function reverse() : void
+    {
+        $newBits = new SplFixedArray(count($this->bits));
+
+        for ($i = 0; $i < $this->size; ++$i) {
+            if ($this->get($this->size - $i - 1)) {
+                $newBits[$i >> 5] = $newBits[$i >> 5] | (1 << ($i & 0x1f));
+            }
+        }
+
+        $this->bits = $newBits;
+    }
+
+    /**
+     * Returns a string representation of the bit array.
+     */
+    public function __toString() : string
+    {
+        $result = '';
+
+        for ($i = 0; $i < $this->size; ++$i) {
+            if (0 === ($i & 0x07)) {
+                $result .= ' ';
+            }
+
+            $result .= $this->get($i) ? 'X' : '.';
+        }
+
+        return $result;
+    }
+}

vendor/bacon/bacon-qr-code/src/Common/BitMatrix.php

@@ -0,0 +1,313 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Common;
+
+use BaconQrCode\Exception\InvalidArgumentException;
+use SplFixedArray;
+
+/**
+ * Bit matrix.
+ *
+ * Represents a 2D matrix of bits. In function arguments below, and throughout
+ * the common module, x is the column position, and y is the row position. The
+ * ordering is always x, y. The origin is at the top-left.
+ */
+class BitMatrix
+{
+    /**
+     * Width of the bit matrix.
+     *
+     * @var int
+     */
+    private $width;
+
+    /**
+     * Height of the bit matrix.
+     *
+     * @var int
+     */
+    private $height;
+
+    /**
+     * Size in bits of each individual row.
+     *
+     * @var int
+     */
+    private $rowSize;
+
+    /**
+     * Bits representation.
+     *
+     * @var SplFixedArray<int>
+     */
+    private $bits;
+
+    /**
+     * @throws InvalidArgumentException if a dimension is smaller than zero
+     */
+    public function __construct(int $width, int $height = null)
+    {
+        if (null === $height) {
+            $height = $width;
+        }
+
+        if ($width < 1 || $height < 1) {
+            throw new InvalidArgumentException('Both dimensions must be greater than zero');
+        }
+
+        $this->width = $width;
+        $this->height = $height;
+        $this->rowSize = ($width + 31) >> 5;
+        $this->bits = SplFixedArray::fromArray(array_fill(0, $this->rowSize * $height, 0));
+    }
+
+    /**
+     * Gets the requested bit, where true means black.
+     */
+    public function get(int $x, int $y) : bool
+    {
+        $offset = $y * $this->rowSize + ($x >> 5);
+        return 0 !== (BitUtils::unsignedRightShift($this->bits[$offset], ($x & 0x1f)) & 1);
+    }
+
+    /**
+     * Sets the given bit to true.
+     */
+    public function set(int $x, int $y) : void
+    {
+        $offset = $y * $this->rowSize + ($x >> 5);
+        $this->bits[$offset] = $this->bits[$offset] | (1 << ($x & 0x1f));
+    }
+
+    /**
+     * Flips the given bit.
+     */
+    public function flip(int $x, int $y) : void
+    {
+        $offset = $y * $this->rowSize + ($x >> 5);
+        $this->bits[$offset] = $this->bits[$offset] ^ (1 << ($x & 0x1f));
+    }
+
+    /**
+     * Clears all bits (set to false).
+     */
+    public function clear() : void
+    {
+        $max = count($this->bits);
+
+        for ($i = 0; $i < $max; ++$i) {
+            $this->bits[$i] = 0;
+        }
+    }
+
+    /**
+     * Sets a square region of the bit matrix to true.
+     *
+     * @throws InvalidArgumentException if left or top are negative
+     * @throws InvalidArgumentException if width or height are smaller than 1
+     * @throws InvalidArgumentException if region does not fit into the matix
+     */
+    public function setRegion(int $left, int $top, int $width, int $height) : void
+    {
+        if ($top < 0 || $left < 0) {
+            throw new InvalidArgumentException('Left and top must be non-negative');
+        }
+
+        if ($height < 1 || $width < 1) {
+            throw new InvalidArgumentException('Width and height must be at least 1');
+        }
+
+        $right = $left + $width;
+        $bottom = $top + $height;
+
+        if ($bottom > $this->height || $right > $this->width) {
+            throw new InvalidArgumentException('The region must fit inside the matrix');
+        }
+
+        for ($y = $top; $y < $bottom; ++$y) {
+            $offset = $y * $this->rowSize;
+
+            for ($x = $left; $x < $right; ++$x) {
+                $index = $offset + ($x >> 5);
+                $this->bits[$index] = $this->bits[$index] | (1 << ($x & 0x1f));
+            }
+        }
+    }
+
+    /**
+     * A fast method to retrieve one row of data from the matrix as a BitArray.
+     */
+    public function getRow(int $y, BitArray $row = null) : BitArray
+    {
+        if (null === $row || $row->getSize() < $this->width) {
+            $row = new BitArray($this->width);
+        }
+
+        $offset = $y * $this->rowSize;
+
+        for ($x = 0; $x < $this->rowSize; ++$x) {
+            $row->setBulk($x << 5, $this->bits[$offset + $x]);
+        }
+
+        return $row;
+    }
+
+    /**
+     * Sets a row of data from a BitArray.
+     */
+    public function setRow(int $y, BitArray $row) : void
+    {
+        $bits = $row->getBitArray();
+
+        for ($i = 0; $i < $this->rowSize; ++$i) {
+            $this->bits[$y * $this->rowSize + $i] = $bits[$i];
+        }
+    }
+
+    /**
+     * This is useful in detecting the enclosing rectangle of a 'pure' barcode.
+     *
+     * @return int[]|null
+     */
+    public function getEnclosingRectangle() : ?array
+    {
+        $left = $this->width;
+        $top = $this->height;
+        $right = -1;
+        $bottom = -1;
+
+        for ($y = 0; $y < $this->height; ++$y) {
+            for ($x32 = 0; $x32 < $this->rowSize; ++$x32) {
+                $bits = $this->bits[$y * $this->rowSize + $x32];
+
+                if (0 !== $bits) {
+                    if ($y < $top) {
+                        $top = $y;
+                    }
+
+                    if ($y > $bottom) {
+                        $bottom = $y;
+                    }
+
+                    if ($x32 * 32 < $left) {
+                        $bit = 0;
+
+                        while (($bits << (31 - $bit)) === 0) {
+                            $bit++;
+                        }
+
+                        if (($x32 * 32 + $bit) < $left) {
+                            $left = $x32 * 32 + $bit;
+                        }
+                    }
+                }
+
+                if ($x32 * 32 + 31 > $right) {
+                    $bit = 31;
+
+                    while (0 === BitUtils::unsignedRightShift($bits, $bit)) {
+                        --$bit;
+                    }
+
+                    if (($x32 * 32 + $bit) > $right) {
+                        $right = $x32 * 32 + $bit;
+                    }
+                }
+            }
+        }
+
+        $width = $right - $left;
+        $height = $bottom - $top;
+
+        if ($width < 0 || $height < 0) {
+            return null;
+        }
+
+        return [$left, $top, $width, $height];
+    }
+
+    /**
+     * Gets the most top left set bit.
+     *
+     * This is useful in detecting a corner of a 'pure' barcode.
+     *
+     * @return int[]|null
+     */
+    public function getTopLeftOnBit() : ?array
+    {
+        $bitsOffset = 0;
+
+        while ($bitsOffset < count($this->bits) && 0 === $this->bits[$bitsOffset]) {
+            ++$bitsOffset;
+        }
+
+        if (count($this->bits) === $bitsOffset) {
+            return null;
+        }
+
+        $x = intdiv($bitsOffset, $this->rowSize);
+        $y = ($bitsOffset % $this->rowSize) << 5;
+
+        $bits = $this->bits[$bitsOffset];
+        $bit = 0;
+
+        while (0 === ($bits << (31 - $bit))) {
+            ++$bit;
+        }
+
+        $x += $bit;
+
+        return [$x, $y];
+    }
+
+    /**
+     * Gets the most bottom right set bit.
+     *
+     * This is useful in detecting a corner of a 'pure' barcode.
+     *
+     * @return int[]|null
+     */
+    public function getBottomRightOnBit() : ?array
+    {
+        $bitsOffset = count($this->bits) - 1;
+
+        while ($bitsOffset >= 0 && 0 === $this->bits[$bitsOffset]) {
+            --$bitsOffset;
+        }
+
+        if ($bitsOffset < 0) {
+            return null;
+        }
+
+        $x = intdiv($bitsOffset, $this->rowSize);
+        $y = ($bitsOffset % $this->rowSize) << 5;
+
+        $bits = $this->bits[$bitsOffset];
+        $bit  = 0;
+
+        while (0 === BitUtils::unsignedRightShift($bits, $bit)) {
+            --$bit;
+        }
+
+        $x += $bit;
+
+        return [$x, $y];
+    }
+
+    /**
+     * Gets the width of the matrix,
+     */
+    public function getWidth() : int
+    {
+        return $this->width;
+    }
+
+    /**
+     * Gets the height of the matrix.
+     */
+    public function getHeight() : int
+    {
+        return $this->height;
+    }
+}

vendor/bacon/bacon-qr-code/src/Common/BitUtils.php

@@ -0,0 +1,41 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Common;
+
+/**
+ * General bit utilities.
+ *
+ * All utility methods are based on 32-bit integers and also work on 64-bit
+ * systems.
+ */
+final class BitUtils
+{
+    private function __construct()
+    {
+    }
+
+    /**
+     * Performs an unsigned right shift.
+     *
+     * This is the same as the unsigned right shift operator ">>>" in other
+     * languages.
+     */
+    public static function unsignedRightShift(int $a, int $b) : int
+    {
+        return (
+            $a >= 0
+            ? $a >> $b
+            : (($a & 0x7fffffff) >> $b) | (0x40000000 >> ($b - 1))
+        );
+    }
+
+    /**
+     * Gets the number of trailing zeros.
+     */
+    public static function numberOfTrailingZeros(int $i) : int
+    {
+        $lastPos = strrpos(str_pad(decbin($i), 32, '0', STR_PAD_LEFT), '1');
+        return $lastPos === false ? 32 : 31 - $lastPos;
+    }
+}

vendor/bacon/bacon-qr-code/src/Common/CharacterSetEci.php

@@ -0,0 +1,180 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Common;
+
+use BaconQrCode\Exception\InvalidArgumentException;
+use DASPRiD\Enum\AbstractEnum;
+
+/**
+ * Encapsulates a Character Set ECI, according to "Extended Channel Interpretations" 5.3.1.1 of ISO 18004.
+ *
+ * @method static self CP437()
+ * @method static self ISO8859_1()
+ * @method static self ISO8859_2()
+ * @method static self ISO8859_3()
+ * @method static self ISO8859_4()
+ * @method static self ISO8859_5()
+ * @method static self ISO8859_6()
+ * @method static self ISO8859_7()
+ * @method static self ISO8859_8()
+ * @method static self ISO8859_9()
+ * @method static self ISO8859_10()
+ * @method static self ISO8859_11()
+ * @method static self ISO8859_12()
+ * @method static self ISO8859_13()
+ * @method static self ISO8859_14()
+ * @method static self ISO8859_15()
+ * @method static self ISO8859_16()
+ * @method static self SJIS()
+ * @method static self CP1250()
+ * @method static self CP1251()
+ * @method static self CP1252()
+ * @method static self CP1256()
+ * @method static self UNICODE_BIG_UNMARKED()
+ * @method static self UTF8()
+ * @method static self ASCII()
+ * @method static self BIG5()
+ * @method static self GB18030()
+ * @method static self EUC_KR()
+ */
+final class CharacterSetEci extends AbstractEnum
+{
+    protected const CP437 = [[0, 2]];
+    protected const ISO8859_1 = [[1, 3], 'ISO-8859-1'];
+    protected const ISO8859_2 = [[4], 'ISO-8859-2'];
+    protected const ISO8859_3 = [[5], 'ISO-8859-3'];
+    protected const ISO8859_4 = [[6], 'ISO-8859-4'];
+    protected const ISO8859_5 = [[7], 'ISO-8859-5'];
+    protected const ISO8859_6 = [[8], 'ISO-8859-6'];
+    protected const ISO8859_7 = [[9], 'ISO-8859-7'];
+    protected const ISO8859_8 = [[10], 'ISO-8859-8'];
+    protected const ISO8859_9 = [[11], 'ISO-8859-9'];
+    protected const ISO8859_10 = [[12], 'ISO-8859-10'];
+    protected const ISO8859_11 = [[13], 'ISO-8859-11'];
+    protected const ISO8859_12 = [[14], 'ISO-8859-12'];
+    protected const ISO8859_13 = [[15], 'ISO-8859-13'];
+    protected const ISO8859_14 = [[16], 'ISO-8859-14'];
+    protected const ISO8859_15 = [[17], 'ISO-8859-15'];
+    protected const ISO8859_16 = [[18], 'ISO-8859-16'];
+    protected const SJIS = [[20], 'Shift_JIS'];
+    protected const CP1250 = [[21], 'windows-1250'];
+    protected const CP1251 = [[22], 'windows-1251'];
+    protected const CP1252 = [[23], 'windows-1252'];
+    protected const CP1256 = [[24], 'windows-1256'];
+    protected const UNICODE_BIG_UNMARKED = [[25], 'UTF-16BE', 'UnicodeBig'];
+    protected const UTF8 = [[26], 'UTF-8'];
+    protected const ASCII = [[27, 170], 'US-ASCII'];
+    protected const BIG5 = [[28]];
+    protected const GB18030 = [[29], 'GB2312', 'EUC_CN', 'GBK'];
+    protected const EUC_KR = [[30], 'EUC-KR'];
+
+    /**
+     * @var int[]
+     */
+    private $values;
+
+    /**
+     * @var string[]
+     */
+    private $otherEncodingNames;
+
+    /**
+     * @var array<int, self>|null
+     */
+    private static $valueToEci;
+
+    /**
+     * @var array<string, self>|null
+     */
+    private static $nameToEci;
+
+    public function __construct(array $values, string ...$otherEncodingNames)
+    {
+        $this->values = $values;
+        $this->otherEncodingNames = $otherEncodingNames;
+    }
+
+    /**
+     * Returns the primary value.
+     */
+    public function getValue() : int
+    {
+        return $this->values[0];
+    }
+
+    /**
+     * Gets character set ECI by value.
+     *
+     * Returns the representing ECI of a given value, or null if it is legal but unsupported.
+     *
+     * @throws InvalidArgumentException if value is not between 0 and 900
+     */
+    public static function getCharacterSetEciByValue(int $value) : ?self
+    {
+        if ($value < 0 || $value >= 900) {
+            throw new InvalidArgumentException('Value must be between 0 and 900');
+        }
+
+        $valueToEci = self::valueToEci();
+
+        if (! array_key_exists($value, $valueToEci)) {
+            return null;
+        }
+
+        return $valueToEci[$value];
+    }
+
+    /**
+     * Returns character set ECI by name.
+     *
+     * Returns the representing ECI of a given name, or null if it is legal but unsupported
+     */
+    public static function getCharacterSetEciByName(string $name) : ?self
+    {
+        $nameToEci = self::nameToEci();
+        $name = strtolower($name);
+
+        if (! array_key_exists($name, $nameToEci)) {
+            return null;
+        }
+
+        return $nameToEci[$name];
+    }
+
+    private static function valueToEci() : array
+    {
+        if (null !== self::$valueToEci) {
+            return self::$valueToEci;
+        }
+
+        self::$valueToEci = [];
+
+        foreach (self::values() as $eci) {
+            foreach ($eci->values as $value) {
+                self::$valueToEci[$value] = $eci;
+            }
+        }
+
+        return self::$valueToEci;
+    }
+
+    private static function nameToEci() : array
+    {
+        if (null !== self::$nameToEci) {
+            return self::$nameToEci;
+        }
+
+        self::$nameToEci = [];
+
+        foreach (self::values() as $eci) {
+            self::$nameToEci[strtolower($eci->name())] = $eci;
+
+            foreach ($eci->otherEncodingNames as $name) {
+                self::$nameToEci[strtolower($name)] = $eci;
+            }
+        }
+
+        return self::$nameToEci;
+    }
+}

vendor/bacon/bacon-qr-code/src/Common/EcBlock.php

@@ -0,0 +1,49 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Common;
+
+/**
+ * Encapsulates the parameters for one error-correction block in one symbol version.
+ *
+ * This includes the number of data codewords, and the number of times a block with these parameters is used
+ * consecutively in the QR code version's format.
+ */
+final class EcBlock
+{
+    /**
+     * How many times the block is used.
+     *
+     * @var int
+     */
+    private $count;
+
+    /**
+     * Number of data codewords.
+     *
+     * @var int
+     */
+    private $dataCodewords;
+
+    public function __construct(int $count, int $dataCodewords)
+    {
+        $this->count = $count;
+        $this->dataCodewords = $dataCodewords;
+    }
+
+    /**
+     * Returns how many times the block is used.
+     */
+    public function getCount() : int
+    {
+        return $this->count;
+    }
+
+    /**
+     * Returns the number of data codewords.
+     */
+    public function getDataCodewords() : int
+    {
+        return $this->dataCodewords;
+    }
+}

vendor/bacon/bacon-qr-code/src/Common/EcBlocks.php

@@ -0,0 +1,74 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Common;
+
+/**
+ * Encapsulates a set of error-correction blocks in one symbol version.
+ *
+ * Most versions will use blocks of differing sizes within one version, so, this encapsulates the parameters for each
+ * set of blocks. It also holds the number of error-correction codewords per block since it will be the same across all
+ * blocks within one version.
+ */
+final class EcBlocks
+{
+    /**
+     * Number of EC codewords per block.
+     *
+     * @var int
+     */
+    private $ecCodewordsPerBlock;
+
+    /**
+     * List of EC blocks.
+     *
+     * @var EcBlock[]
+     */
+    private $ecBlocks;
+
+    public function __construct(int $ecCodewordsPerBlock, EcBlock ...$ecBlocks)
+    {
+        $this->ecCodewordsPerBlock = $ecCodewordsPerBlock;
+        $this->ecBlocks = $ecBlocks;
+    }
+
+    /**
+     * Returns the number of EC codewords per block.
+     */
+    public function getEcCodewordsPerBlock() : int
+    {
+        return $this->ecCodewordsPerBlock;
+    }
+
+    /**
+     * Returns the total number of EC block appearances.
+     */
+    public function getNumBlocks() : int
+    {
+        $total = 0;
+
+        foreach ($this->ecBlocks as $ecBlock) {
+            $total += $ecBlock->getCount();
+        }
+
+        return $total;
+    }
+
+    /**
+     * Returns the total count of EC codewords.
+     */
+    public function getTotalEcCodewords() : int
+    {
+        return $this->ecCodewordsPerBlock * $this->getNumBlocks();
+    }
+
+    /**
+     * Returns the EC blocks included in this collection.
+     *
+     * @return EcBlock[]
+     */
+    public function getEcBlocks() : array
+    {
+        return $this->ecBlocks;
+    }
+}

vendor/bacon/bacon-qr-code/src/Common/ErrorCorrectionLevel.php

@@ -0,0 +1,63 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Common;
+
+use BaconQrCode\Exception\OutOfBoundsException;
+use DASPRiD\Enum\AbstractEnum;
+
+/**
+ * Enum representing the four error correction levels.
+ *
+ * @method static self L() ~7% correction
+ * @method static self M() ~15% correction
+ * @method static self Q() ~25% correction
+ * @method static self H() ~30% correction
+ */
+final class ErrorCorrectionLevel extends AbstractEnum
+{
+    protected const L = [0x01];
+    protected const M = [0x00];
+    protected const Q = [0x03];
+    protected const H = [0x02];
+
+    /**
+     * @var int
+     */
+    private $bits;
+
+    protected function __construct(int $bits)
+    {
+        $this->bits = $bits;
+    }
+
+    /**
+     * @throws OutOfBoundsException if number of bits is invalid
+     */
+    public static function forBits(int $bits) : self
+    {
+        switch ($bits) {
+            case 0:
+                return self::M();
+
+            case 1:
+                return self::L();
+
+            case 2:
+                return self::H();
+
+            case 3:
+                return self::Q();
+        }
+
+        throw new OutOfBoundsException('Invalid number of bits');
+    }
+
+    /**
+     * Returns the two bits used to encode this error correction level.
+     */
+    public function getBits() : int
+    {
+        return $this->bits;
+    }
+}

vendor/bacon/bacon-qr-code/src/Common/FormatInformation.php

@@ -0,0 +1,203 @@
+<?php
+/**
+ * BaconQrCode
+ *
+ * @link      http://github.com/Bacon/BaconQrCode For the canonical source repository
+ * @copyright 2013 Ben 'DASPRiD' Scholzen
+ * @license   http://opensource.org/licenses/BSD-2-Clause Simplified BSD License
+ */
+
+namespace BaconQrCode\Common;
+
+/**
+ * Encapsulates a QR Code's format information, including the data mask used and error correction level.
+ */
+class FormatInformation
+{
+    /**
+     * Mask for format information.
+     */
+    private const FORMAT_INFO_MASK_QR = 0x5412;
+
+    /**
+     * Lookup table for decoding format information.
+     *
+     * See ISO 18004:2006, Annex C, Table C.1
+     */
+    private const FORMAT_INFO_DECODE_LOOKUP = [
+        [0x5412, 0x00],
+        [0x5125, 0x01],
+        [0x5e7c, 0x02],
+        [0x5b4b, 0x03],
+        [0x45f9, 0x04],
+        [0x40ce, 0x05],
+        [0x4f97, 0x06],
+        [0x4aa0, 0x07],
+        [0x77c4, 0x08],
+        [0x72f3, 0x09],
+        [0x7daa, 0x0a],
+        [0x789d, 0x0b],
+        [0x662f, 0x0c],
+        [0x6318, 0x0d],
+        [0x6c41, 0x0e],
+        [0x6976, 0x0f],
+        [0x1689, 0x10],
+        [0x13be, 0x11],
+        [0x1ce7, 0x12],
+        [0x19d0, 0x13],
+        [0x0762, 0x14],
+        [0x0255, 0x15],
+        [0x0d0c, 0x16],
+        [0x083b, 0x17],
+        [0x355f, 0x18],
+        [0x3068, 0x19],
+        [0x3f31, 0x1a],
+        [0x3a06, 0x1b],
+        [0x24b4, 0x1c],
+        [0x2183, 0x1d],
+        [0x2eda, 0x1e],
+        [0x2bed, 0x1f],
+    ];
+
+    /**
+     * Offset i holds the number of 1 bits in the binary representation of i.
+     *
+     * @var array
+     */
+    private const BITS_SET_IN_HALF_BYTE = [0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4];
+
+    /**
+     * Error correction level.
+     *
+     * @var ErrorCorrectionLevel
+     */
+    private $ecLevel;
+
+    /**
+     * Data mask.
+     *
+     * @var int
+     */
+    private $dataMask;
+
+    protected function __construct(int $formatInfo)
+    {
+        $this->ecLevel = ErrorCorrectionLevel::forBits(($formatInfo >> 3) & 0x3);
+        $this->dataMask = $formatInfo & 0x7;
+    }
+
+    /**
+     * Checks how many bits are different between two integers.
+     */
+    public static function numBitsDiffering(int $a, int $b) : int
+    {
+        $a ^= $b;
+
+        return (
+            self::BITS_SET_IN_HALF_BYTE[$a & 0xf]
+            + self::BITS_SET_IN_HALF_BYTE[(BitUtils::unsignedRightShift($a, 4) & 0xf)]
+            + self::BITS_SET_IN_HALF_BYTE[(BitUtils::unsignedRightShift($a, 8) & 0xf)]
+            + self::BITS_SET_IN_HALF_BYTE[(BitUtils::unsignedRightShift($a, 12) & 0xf)]
+            + self::BITS_SET_IN_HALF_BYTE[(BitUtils::unsignedRightShift($a, 16) & 0xf)]
+            + self::BITS_SET_IN_HALF_BYTE[(BitUtils::unsignedRightShift($a, 20) & 0xf)]
+            + self::BITS_SET_IN_HALF_BYTE[(BitUtils::unsignedRightShift($a, 24) & 0xf)]
+            + self::BITS_SET_IN_HALF_BYTE[(BitUtils::unsignedRightShift($a, 28) & 0xf)]
+        );
+    }
+
+    /**
+     * Decodes format information.
+     */
+    public static function decodeFormatInformation(int $maskedFormatInfo1, int $maskedFormatInfo2) : ?self
+    {
+        $formatInfo = self::doDecodeFormatInformation($maskedFormatInfo1, $maskedFormatInfo2);
+
+        if (null !== $formatInfo) {
+            return $formatInfo;
+        }
+
+        // Should return null, but, some QR codes apparently do not mask this info. Try again by actually masking the
+        // pattern first.
+        return self::doDecodeFormatInformation(
+            $maskedFormatInfo1 ^ self::FORMAT_INFO_MASK_QR,
+            $maskedFormatInfo2 ^ self::FORMAT_INFO_MASK_QR
+        );
+    }
+
+    /**
+     * Internal method for decoding format information.
+     */
+    private static function doDecodeFormatInformation(int $maskedFormatInfo1, int $maskedFormatInfo2) : ?self
+    {
+        $bestDifference = PHP_INT_MAX;
+        $bestFormatInfo = 0;
+
+        foreach (self::FORMAT_INFO_DECODE_LOOKUP as $decodeInfo) {
+            $targetInfo = $decodeInfo[0];
+
+            if ($targetInfo === $maskedFormatInfo1 || $targetInfo === $maskedFormatInfo2) {
+                // Found an exact match
+                return new self($decodeInfo[1]);
+            }
+
+            $bitsDifference = self::numBitsDiffering($maskedFormatInfo1, $targetInfo);
+
+            if ($bitsDifference < $bestDifference) {
+                $bestFormatInfo = $decodeInfo[1];
+                $bestDifference = $bitsDifference;
+            }
+
+            if ($maskedFormatInfo1 !== $maskedFormatInfo2) {
+                // Also try the other option
+                $bitsDifference = self::numBitsDiffering($maskedFormatInfo2, $targetInfo);
+
+                if ($bitsDifference < $bestDifference) {
+                    $bestFormatInfo = $decodeInfo[1];
+                    $bestDifference = $bitsDifference;
+                }
+            }
+        }
+
+        // Hamming distance of the 32 masked codes is 7, by construction, so <= 3 bits differing means we found a match.
+        if ($bestDifference <= 3) {
+            return new self($bestFormatInfo);
+        }
+
+        return null;
+    }
+
+    /**
+     * Returns the error correction level.
+     */
+    public function getErrorCorrectionLevel() : ErrorCorrectionLevel
+    {
+        return $this->ecLevel;
+    }
+
+    /**
+     * Returns the data mask.
+     */
+    public function getDataMask() : int
+    {
+        return $this->dataMask;
+    }
+
+    /**
+     * Hashes the code of the EC level.
+     */
+    public function hashCode() : int
+    {
+        return ($this->ecLevel->getBits() << 3) | $this->dataMask;
+    }
+
+    /**
+     * Verifies if this instance equals another one.
+     */
+    public function equals(self $other) : bool
+    {
+        return (
+            $this->ecLevel === $other->ecLevel
+            && $this->dataMask === $other->dataMask
+        );
+    }
+}

vendor/bacon/bacon-qr-code/src/Common/Mode.php

@@ -0,0 +1,76 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Common;
+
+use DASPRiD\Enum\AbstractEnum;
+
+/**
+ * Enum representing various modes in which data can be encoded to bits.
+ *
+ * @method static self TERMINATOR()
+ * @method static self NUMERIC()
+ * @method static self ALPHANUMERIC()
+ * @method static self STRUCTURED_APPEND()
+ * @method static self BYTE()
+ * @method static self ECI()
+ * @method static self KANJI()
+ * @method static self FNC1_FIRST_POSITION()
+ * @method static self FNC1_SECOND_POSITION()
+ * @method static self HANZI()
+ */
+final class Mode extends AbstractEnum
+{
+    protected const TERMINATOR = [[0, 0, 0], 0x00];
+    protected const NUMERIC = [[10, 12, 14], 0x01];
+    protected const ALPHANUMERIC = [[9, 11, 13], 0x02];
+    protected const STRUCTURED_APPEND = [[0, 0, 0], 0x03];
+    protected const BYTE = [[8, 16, 16], 0x04];
+    protected const ECI = [[0, 0, 0], 0x07];
+    protected const KANJI = [[8, 10, 12], 0x08];
+    protected const FNC1_FIRST_POSITION = [[0, 0, 0], 0x05];
+    protected const FNC1_SECOND_POSITION = [[0, 0, 0], 0x09];
+    protected const HANZI = [[8, 10, 12], 0x0d];
+
+    /**
+     * @var int[]
+     */
+    private $characterCountBitsForVersions;
+
+    /**
+     * @var int
+     */
+    private $bits;
+
+    protected function __construct(array $characterCountBitsForVersions, int $bits)
+    {
+        $this->characterCountBitsForVersions = $characterCountBitsForVersions;
+        $this->bits = $bits;
+    }
+
+    /**
+     * Returns the number of bits used in a specific QR code version.
+     */
+    public function getCharacterCountBits(Version $version) : int
+    {
+        $number = $version->getVersionNumber();
+
+        if ($number <= 9) {
+            $offset = 0;
+        } elseif ($number <= 26) {
+            $offset = 1;
+        } else {
+            $offset = 2;
+        }
+
+        return $this->characterCountBitsForVersions[$offset];
+    }
+
+    /**
+     * Returns the four bits used to encode this mode.
+     */
+    public function getBits() : int
+    {
+        return $this->bits;
+    }
+}

vendor/bacon/bacon-qr-code/src/Common/ReedSolomonCodec.php

@@ -0,0 +1,468 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Common;
+
+use BaconQrCode\Exception\InvalidArgumentException;
+use BaconQrCode\Exception\RuntimeException;
+use SplFixedArray;
+
+/**
+ * Reed-Solomon codec for 8-bit characters.
+ *
+ * Based on libfec by Phil Karn, KA9Q.
+ */
+final class ReedSolomonCodec
+{
+    /**
+     * Symbol size in bits.
+     *
+     * @var int
+     */
+    private $symbolSize;
+
+    /**
+     * Block size in symbols.
+     *
+     * @var int
+     */
+    private $blockSize;
+
+    /**
+     * First root of RS code generator polynomial, index form.
+     *
+     * @var int
+     */
+    private $firstRoot;
+
+    /**
+     * Primitive element to generate polynomial roots, index form.
+     *
+     * @var int
+     */
+    private $primitive;
+
+    /**
+     * Prim-th root of 1, index form.
+     *
+     * @var int
+     */
+    private $iPrimitive;
+
+    /**
+     * RS code generator polynomial degree (number of roots).
+     *
+     * @var int
+     */
+    private $numRoots;
+
+    /**
+     * Padding bytes at front of shortened block.
+     *
+     * @var int
+     */
+    private $padding;
+
+    /**
+     * Log lookup table.
+     *
+     * @var SplFixedArray
+     */
+    private $alphaTo;
+
+    /**
+     * Anti-Log lookup table.
+     *
+     * @var SplFixedArray
+     */
+    private $indexOf;
+
+    /**
+     * Generator polynomial.
+     *
+     * @var SplFixedArray
+     */
+    private $generatorPoly;
+
+    /**
+     * @throws InvalidArgumentException if symbol size ist not between 0 and 8
+     * @throws InvalidArgumentException if first root is invalid
+     * @throws InvalidArgumentException if num roots is invalid
+     * @throws InvalidArgumentException if padding is invalid
+     * @throws RuntimeException if field generator polynomial is not primitive
+     */
+    public function __construct(
+        int $symbolSize,
+        int $gfPoly,
+        int $firstRoot,
+        int $primitive,
+        int $numRoots,
+        int $padding
+    ) {
+        if ($symbolSize < 0 || $symbolSize > 8) {
+            throw new InvalidArgumentException('Symbol size must be between 0 and 8');
+        }
+
+        if ($firstRoot < 0 || $firstRoot >= (1 << $symbolSize)) {
+            throw new InvalidArgumentException('First root must be between 0 and ' . (1 << $symbolSize));
+        }
+
+        if ($numRoots < 0 || $numRoots >= (1 << $symbolSize)) {
+            throw new InvalidArgumentException('Num roots must be between 0 and ' . (1 << $symbolSize));
+        }
+
+        if ($padding < 0 || $padding >= ((1 << $symbolSize) - 1 - $numRoots)) {
+            throw new InvalidArgumentException(
+                'Padding must be between 0 and ' . ((1 << $symbolSize) - 1 - $numRoots)
+            );
+        }
+
+        $this->symbolSize = $symbolSize;
+        $this->blockSize = (1 << $symbolSize) - 1;
+        $this->padding = $padding;
+        $this->alphaTo = SplFixedArray::fromArray(array_fill(0, $this->blockSize + 1, 0), false);
+        $this->indexOf = SplFixedArray::fromArray(array_fill(0, $this->blockSize + 1, 0), false);
+
+        // Generate galous field lookup table
+        $this->indexOf[0] = $this->blockSize;
+        $this->alphaTo[$this->blockSize] = 0;
+
+        $sr = 1;
+
+        for ($i = 0; $i < $this->blockSize; ++$i) {
+            $this->indexOf[$sr] = $i;
+            $this->alphaTo[$i]  = $sr;
+
+            $sr <<= 1;
+
+            if ($sr & (1 << $symbolSize)) {
+                $sr ^= $gfPoly;
+            }
+
+            $sr &= $this->blockSize;
+        }
+
+        if (1 !== $sr) {
+            throw new RuntimeException('Field generator polynomial is not primitive');
+        }
+
+        // Form RS code generator polynomial from its roots
+        $this->generatorPoly = SplFixedArray::fromArray(array_fill(0, $numRoots + 1, 0), false);
+        $this->firstRoot = $firstRoot;
+        $this->primitive = $primitive;
+        $this->numRoots = $numRoots;
+
+        // Find prim-th root of 1, used in decoding
+        for ($iPrimitive = 1; ($iPrimitive % $primitive) !== 0; $iPrimitive += $this->blockSize) {
+        }
+
+        $this->iPrimitive = intdiv($iPrimitive, $primitive);
+
+        $this->generatorPoly[0] = 1;
+
+        for ($i = 0, $root = $firstRoot * $primitive; $i < $numRoots; ++$i, $root += $primitive) {
+            $this->generatorPoly[$i + 1] = 1;
+
+            for ($j = $i; $j > 0; $j--) {
+                if ($this->generatorPoly[$j] !== 0) {
+                    $this->generatorPoly[$j] = $this->generatorPoly[$j - 1] ^ $this->alphaTo[
+                        $this->modNn($this->indexOf[$this->generatorPoly[$j]] + $root)
+                    ];
+                } else {
+                    $this->generatorPoly[$j] = $this->generatorPoly[$j - 1];
+                }
+            }
+
+            $this->generatorPoly[$j] = $this->alphaTo[$this->modNn($this->indexOf[$this->generatorPoly[0]] + $root)];
+        }
+
+        // Convert generator poly to index form for quicker encoding
+        for ($i = 0; $i <= $numRoots; ++$i) {
+            $this->generatorPoly[$i] = $this->indexOf[$this->generatorPoly[$i]];
+        }
+    }
+
+    /**
+     * Encodes data and writes result back into parity array.
+     */
+    public function encode(SplFixedArray $data, SplFixedArray $parity) : void
+    {
+        for ($i = 0; $i < $this->numRoots; ++$i) {
+            $parity[$i] = 0;
+        }
+
+        $iterations = $this->blockSize - $this->numRoots - $this->padding;
+
+        for ($i = 0; $i < $iterations; ++$i) {
+            $feedback = $this->indexOf[$data[$i] ^ $parity[0]];
+
+            if ($feedback !== $this->blockSize) {
+                // Feedback term is non-zero
+                $feedback = $this->modNn($this->blockSize - $this->generatorPoly[$this->numRoots] + $feedback);
+
+                for ($j = 1; $j < $this->numRoots; ++$j) {
+                    $parity[$j] = $parity[$j] ^ $this->alphaTo[
+                        $this->modNn($feedback + $this->generatorPoly[$this->numRoots - $j])
+                    ];
+                }
+            }
+
+            for ($j = 0; $j < $this->numRoots - 1; ++$j) {
+                $parity[$j] = $parity[$j + 1];
+            }
+
+            if ($feedback !== $this->blockSize) {
+                $parity[$this->numRoots - 1] = $this->alphaTo[$this->modNn($feedback + $this->generatorPoly[0])];
+            } else {
+                $parity[$this->numRoots - 1] = 0;
+            }
+        }
+    }
+
+    /**
+     * Decodes received data.
+     */
+    public function decode(SplFixedArray $data, SplFixedArray $erasures = null) : ?int
+    {
+        // This speeds up the initialization a bit.
+        $numRootsPlusOne = SplFixedArray::fromArray(array_fill(0, $this->numRoots + 1, 0), false);
+        $numRoots = SplFixedArray::fromArray(array_fill(0, $this->numRoots, 0), false);
+
+        $lambda = clone $numRootsPlusOne;
+        $b = clone $numRootsPlusOne;
+        $t = clone $numRootsPlusOne;
+        $omega = clone $numRootsPlusOne;
+        $root = clone $numRoots;
+        $loc = clone $numRoots;
+
+        $numErasures = (null !== $erasures ? count($erasures) : 0);
+
+        // Form the Syndromes; i.e., evaluate data(x) at roots of g(x)
+        $syndromes = SplFixedArray::fromArray(array_fill(0, $this->numRoots, $data[0]), false);
+
+        for ($i = 1; $i < $this->blockSize - $this->padding; ++$i) {
+            for ($j = 0; $j < $this->numRoots; ++$j) {
+                if ($syndromes[$j] === 0) {
+                    $syndromes[$j] = $data[$i];
+                } else {
+                    $syndromes[$j] = $data[$i] ^ $this->alphaTo[
+                        $this->modNn($this->indexOf[$syndromes[$j]] + ($this->firstRoot + $j) * $this->primitive)
+                    ];
+                }
+            }
+        }
+
+        // Convert syndromes to index form, checking for nonzero conditions
+        $syndromeError = 0;
+
+        for ($i = 0; $i < $this->numRoots; ++$i) {
+            $syndromeError |= $syndromes[$i];
+            $syndromes[$i] = $this->indexOf[$syndromes[$i]];
+        }
+
+        if (! $syndromeError) {
+            // If syndrome is zero, data[] is a codeword and there are no errors to correct, so return data[]
+            // unmodified.
+            return 0;
+        }
+
+        $lambda[0] = 1;
+
+        if ($numErasures > 0) {
+            // Init lambda to be the erasure locator polynomial
+            $lambda[1] = $this->alphaTo[$this->modNn($this->primitive * ($this->blockSize - 1 - $erasures[0]))];
+
+            for ($i = 1; $i < $numErasures; ++$i) {
+                $u = $this->modNn($this->primitive * ($this->blockSize - 1 - $erasures[$i]));
+
+                for ($j = $i + 1; $j > 0; --$j) {
+                    $tmp = $this->indexOf[$lambda[$j - 1]];
+
+                    if ($tmp !== $this->blockSize) {
+                        $lambda[$j] = $lambda[$j] ^ $this->alphaTo[$this->modNn($u + $tmp)];
+                    }
+                }
+            }
+        }
+
+        for ($i = 0; $i <= $this->numRoots; ++$i) {
+            $b[$i] = $this->indexOf[$lambda[$i]];
+        }
+
+        // Begin Berlekamp-Massey algorithm to determine error+erasure locator polynomial
+        $r  = $numErasures;
+        $el = $numErasures;
+
+        while (++$r <= $this->numRoots) {
+            // Compute discrepancy at the r-th step in poly form
+            $discrepancyR = 0;
+
+            for ($i = 0; $i < $r; ++$i) {
+                if ($lambda[$i] !== 0 && $syndromes[$r - $i - 1] !== $this->blockSize) {
+                    $discrepancyR ^= $this->alphaTo[
+                        $this->modNn($this->indexOf[$lambda[$i]] + $syndromes[$r - $i - 1])
+                    ];
+                }
+            }
+
+            $discrepancyR = $this->indexOf[$discrepancyR];
+
+            if ($discrepancyR === $this->blockSize) {
+                $tmp = $b->toArray();
+                array_unshift($tmp, $this->blockSize);
+                array_pop($tmp);
+                $b = SplFixedArray::fromArray($tmp, false);
+                continue;
+            }
+
+            $t[0] = $lambda[0];
+
+            for ($i = 0; $i < $this->numRoots; ++$i) {
+                if ($b[$i] !== $this->blockSize) {
+                    $t[$i + 1] = $lambda[$i + 1] ^ $this->alphaTo[$this->modNn($discrepancyR + $b[$i])];
+                } else {
+                    $t[$i + 1] = $lambda[$i + 1];
+                }
+            }
+
+            if (2 * $el <= $r + $numErasures - 1) {
+                $el = $r + $numErasures - $el;
+
+                for ($i = 0; $i <= $this->numRoots; ++$i) {
+                    $b[$i] = (
+                        $lambda[$i] === 0
+                        ? $this->blockSize
+                        : $this->modNn($this->indexOf[$lambda[$i]] - $discrepancyR + $this->blockSize)
+                    );
+                }
+            } else {
+                $tmp = $b->toArray();
+                array_unshift($tmp, $this->blockSize);
+                array_pop($tmp);
+                $b = SplFixedArray::fromArray($tmp, false);
+            }
+
+            $lambda = clone $t;
+        }
+
+        // Convert lambda to index form and compute deg(lambda(x))
+        $degLambda = 0;
+
+        for ($i = 0; $i <= $this->numRoots; ++$i) {
+            $lambda[$i] = $this->indexOf[$lambda[$i]];
+
+            if ($lambda[$i] !== $this->blockSize) {
+                $degLambda = $i;
+            }
+        }
+
+        // Find roots of the error+erasure locator polynomial by Chien search.
+        $reg = clone $lambda;
+        $reg[0] = 0;
+        $count = 0;
+        $i = 1;
+
+        for ($k = $this->iPrimitive - 1; $i <= $this->blockSize; ++$i, $k = $this->modNn($k + $this->iPrimitive)) {
+            $q = 1;
+
+            for ($j = $degLambda; $j > 0; $j--) {
+                if ($reg[$j] !== $this->blockSize) {
+                    $reg[$j] = $this->modNn($reg[$j] + $j);
+                    $q ^= $this->alphaTo[$reg[$j]];
+                }
+            }
+
+            if ($q !== 0) {
+                // Not a root
+                continue;
+            }
+
+            // Store root (index-form) and error location number
+            $root[$count] = $i;
+            $loc[$count] = $k;
+
+            if (++$count === $degLambda) {
+                break;
+            }
+        }
+
+        if ($degLambda !== $count) {
+            // deg(lambda) unequal to number of roots: uncorrectable error detected
+            return null;
+        }
+
+        // Compute err+eras evaluate poly omega(x) = s(x)*lambda(x) (modulo x**numRoots). In index form. Also find
+        // deg(omega).
+        $degOmega = $degLambda - 1;
+
+        for ($i = 0; $i <= $degOmega; ++$i) {
+            $tmp = 0;
+
+            for ($j = $i; $j >= 0; --$j) {
+                if ($syndromes[$i - $j] !== $this->blockSize && $lambda[$j] !== $this->blockSize) {
+                    $tmp ^= $this->alphaTo[$this->modNn($syndromes[$i - $j] + $lambda[$j])];
+                }
+            }
+
+            $omega[$i] = $this->indexOf[$tmp];
+        }
+
+        // Compute error values in poly-form. num1 = omega(inv(X(l))), num2 = inv(X(l))**(firstRoot-1) and
+        // den = lambda_pr(inv(X(l))) all in poly form.
+        for ($j = $count - 1; $j >= 0; --$j) {
+            $num1 = 0;
+
+            for ($i = $degOmega; $i >= 0; $i--) {
+                if ($omega[$i] !== $this->blockSize) {
+                    $num1 ^= $this->alphaTo[$this->modNn($omega[$i] + $i * $root[$j])];
+                }
+            }
+
+            $num2 = $this->alphaTo[$this->modNn($root[$j] * ($this->firstRoot - 1) + $this->blockSize)];
+            $den  = 0;
+
+            // lambda[i+1] for i even is the formal derivativelambda_pr of lambda[i]
+            for ($i = min($degLambda, $this->numRoots - 1) & ~1; $i >= 0; $i -= 2) {
+                if ($lambda[$i + 1] !== $this->blockSize) {
+                    $den ^= $this->alphaTo[$this->modNn($lambda[$i + 1] + $i * $root[$j])];
+                }
+            }
+
+            // Apply error to data
+            if ($num1 !== 0 && $loc[$j] >= $this->padding) {
+                $data[$loc[$j] - $this->padding] = $data[$loc[$j] - $this->padding] ^ (
+                    $this->alphaTo[
+                        $this->modNn(
+                            $this->indexOf[$num1] + $this->indexOf[$num2] + $this->blockSize - $this->indexOf[$den]
+                        )
+                    ]
+                );
+            }
+        }
+
+        if (null !== $erasures) {
+            if (count($erasures) < $count) {
+                $erasures->setSize($count);
+            }
+
+            for ($i = 0; $i < $count; $i++) {
+                $erasures[$i] = $loc[$i];
+            }
+        }
+
+        return $count;
+    }
+
+    /**
+     * Computes $x % GF_SIZE, where GF_SIZE is 2**GF_BITS - 1, without a slow divide.
+     */
+    private function modNn(int $x) : int
+    {
+        while ($x >= $this->blockSize) {
+            $x -= $this->blockSize;
+            $x = ($x >> $this->symbolSize) + ($x & $this->blockSize);
+        }
+
+        return $x;
+    }
+}

vendor/bacon/bacon-qr-code/src/Common/Version.php

@@ -0,0 +1,596 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Common;
+
+use BaconQrCode\Exception\InvalidArgumentException;
+use SplFixedArray;
+
+/**
+ * Version representation.
+ */
+final class Version
+{
+    private const VERSION_DECODE_INFO = [
+        0x07c94,
+        0x085bc,
+        0x09a99,
+        0x0a4d3,
+        0x0bbf6,
+        0x0c762,
+        0x0d847,
+        0x0e60d,
+        0x0f928,
+        0x10b78,
+        0x1145d,
+        0x12a17,
+        0x13532,
+        0x149a6,
+        0x15683,
+        0x168c9,
+        0x177ec,
+        0x18ec4,
+        0x191e1,
+        0x1afab,
+        0x1b08e,
+        0x1cc1a,
+        0x1d33f,
+        0x1ed75,
+        0x1f250,
+        0x209d5,
+        0x216f0,
+        0x228ba,
+        0x2379f,
+        0x24b0b,
+        0x2542e,
+        0x26a64,
+        0x27541,
+        0x28c69,
+    ];
+
+    /**
+     * Version number of this version.
+     *
+     * @var int
+     */
+    private $versionNumber;
+
+    /**
+     * Alignment pattern centers.
+     *
+     * @var SplFixedArray
+     */
+    private $alignmentPatternCenters;
+
+    /**
+     * Error correction blocks.
+     *
+     * @var EcBlocks[]
+     */
+    private $ecBlocks;
+
+    /**
+     * Total number of codewords.
+     *
+     * @var int
+     */
+    private $totalCodewords;
+
+    /**
+     * Cached version instances.
+     *
+     * @var array<int, self>|null
+     */
+    private static $versions;
+
+    /**
+     * @param int[] $alignmentPatternCenters
+     */
+    private function __construct(
+        int $versionNumber,
+        array $alignmentPatternCenters,
+        EcBlocks ...$ecBlocks
+    ) {
+        $this->versionNumber = $versionNumber;
+        $this->alignmentPatternCenters = $alignmentPatternCenters;
+        $this->ecBlocks = $ecBlocks;
+
+        $totalCodewords = 0;
+        $ecCodewords = $ecBlocks[0]->getEcCodewordsPerBlock();
+
+        foreach ($ecBlocks[0]->getEcBlocks() as $ecBlock) {
+            $totalCodewords += $ecBlock->getCount() * ($ecBlock->getDataCodewords() + $ecCodewords);
+        }
+
+        $this->totalCodewords = $totalCodewords;
+    }
+
+    /**
+     * Returns the version number.
+     */
+    public function getVersionNumber() : int
+    {
+        return $this->versionNumber;
+    }
+
+    /**
+     * Returns the alignment pattern centers.
+     *
+     * @return int[]
+     */
+    public function getAlignmentPatternCenters() : array
+    {
+        return $this->alignmentPatternCenters;
+    }
+
+    /**
+     * Returns the total number of codewords.
+     */
+    public function getTotalCodewords() : int
+    {
+        return $this->totalCodewords;
+    }
+
+    /**
+     * Calculates the dimension for the current version.
+     */
+    public function getDimensionForVersion() : int
+    {
+        return 17 + 4 * $this->versionNumber;
+    }
+
+    /**
+     * Returns the number of EC blocks for a specific EC level.
+     */
+    public function getEcBlocksForLevel(ErrorCorrectionLevel $ecLevel) : EcBlocks
+    {
+        return $this->ecBlocks[$ecLevel->ordinal()];
+    }
+
+    /**
+     * Gets a provisional version number for a specific dimension.
+     *
+     * @throws InvalidArgumentException if dimension is not 1 mod 4
+     */
+    public static function getProvisionalVersionForDimension(int $dimension) : self
+    {
+        if (1 !== $dimension % 4) {
+            throw new InvalidArgumentException('Dimension is not 1 mod 4');
+        }
+
+        return self::getVersionForNumber(intdiv($dimension - 17, 4));
+    }
+
+    /**
+     * Gets a version instance for a specific version number.
+     *
+     * @throws InvalidArgumentException if version number is out of range
+     */
+    public static function getVersionForNumber(int $versionNumber) : self
+    {
+        if ($versionNumber < 1 || $versionNumber > 40) {
+            throw new InvalidArgumentException('Version number must be between 1 and 40');
+        }
+
+        return self::versions()[$versionNumber - 1];
+    }
+
+    /**
+     * Decodes version information from an integer and returns the version.
+     */
+    public static function decodeVersionInformation(int $versionBits) : ?self
+    {
+        $bestDifference = PHP_INT_MAX;
+        $bestVersion = 0;
+
+        foreach (self::VERSION_DECODE_INFO as $i => $targetVersion) {
+            if ($targetVersion === $versionBits) {
+                return self::getVersionForNumber($i + 7);
+            }
+
+            $bitsDifference = FormatInformation::numBitsDiffering($versionBits, $targetVersion);
+
+            if ($bitsDifference < $bestDifference) {
+                $bestVersion = $i + 7;
+                $bestDifference = $bitsDifference;
+            }
+        }
+
+        if ($bestDifference <= 3) {
+            return self::getVersionForNumber($bestVersion);
+        }
+
+        return null;
+    }
+
+    /**
+     * Builds the function pattern for the current version.
+     */
+    public function buildFunctionPattern() : BitMatrix
+    {
+        $dimension = $this->getDimensionForVersion();
+        $bitMatrix = new BitMatrix($dimension);
+
+        // Top left finder pattern + separator + format
+        $bitMatrix->setRegion(0, 0, 9, 9);
+        // Top right finder pattern + separator + format
+        $bitMatrix->setRegion($dimension - 8, 0, 8, 9);
+        // Bottom left finder pattern + separator + format
+        $bitMatrix->setRegion(0, $dimension - 8, 9, 8);
+
+        // Alignment patterns
+        $max = count($this->alignmentPatternCenters);
+
+        for ($x = 0; $x < $max; ++$x) {
+            $i = $this->alignmentPatternCenters[$x] - 2;
+
+            for ($y = 0; $y < $max; ++$y) {
+                if (($x === 0 && ($y === 0 || $y === $max - 1)) || ($x === $max - 1 && $y === 0)) {
+                    // No alignment patterns near the three finder paterns
+                    continue;
+                }
+
+                $bitMatrix->setRegion($this->alignmentPatternCenters[$y] - 2, $i, 5, 5);
+            }
+        }
+
+        // Vertical timing pattern
+        $bitMatrix->setRegion(6, 9, 1, $dimension - 17);
+        // Horizontal timing pattern
+        $bitMatrix->setRegion(9, 6, $dimension - 17, 1);
+
+        if ($this->versionNumber > 6) {
+            // Version info, top right
+            $bitMatrix->setRegion($dimension - 11, 0, 3, 6);
+            // Version info, bottom left
+            $bitMatrix->setRegion(0, $dimension - 11, 6, 3);
+        }
+
+        return $bitMatrix;
+    }
+
+    /**
+     * Returns a string representation for the version.
+     */
+    public function __toString() : string
+    {
+        return (string) $this->versionNumber;
+    }
+
+    /**
+     * Build and cache a specific version.
+     *
+     * See ISO 18004:2006 6.5.1 Table 9.
+     *
+     * @return array<int, self>
+     */
+    private static function versions() : array
+    {
+        if (null !== self::$versions) {
+            return self::$versions;
+        }
+
+        return self::$versions = [
+            new self(
+                1,
+                [],
+                new EcBlocks(7, new EcBlock(1, 19)),
+                new EcBlocks(10, new EcBlock(1, 16)),
+                new EcBlocks(13, new EcBlock(1, 13)),
+                new EcBlocks(17, new EcBlock(1, 9))
+            ),
+            new self(
+                2,
+                [6, 18],
+                new EcBlocks(10, new EcBlock(1, 34)),
+                new EcBlocks(16, new EcBlock(1, 28)),
+                new EcBlocks(22, new EcBlock(1, 22)),
+                new EcBlocks(28, new EcBlock(1, 16))
+            ),
+            new self(
+                3,
+                [6, 22],
+                new EcBlocks(15, new EcBlock(1, 55)),
+                new EcBlocks(26, new EcBlock(1, 44)),
+                new EcBlocks(18, new EcBlock(2, 17)),
+                new EcBlocks(22, new EcBlock(2, 13))
+            ),
+            new self(
+                4,
+                [6, 26],
+                new EcBlocks(20, new EcBlock(1, 80)),
+                new EcBlocks(18, new EcBlock(2, 32)),
+                new EcBlocks(26, new EcBlock(3, 24)),
+                new EcBlocks(16, new EcBlock(4, 9))
+            ),
+            new self(
+                5,
+                [6, 30],
+                new EcBlocks(26, new EcBlock(1, 108)),
+                new EcBlocks(24, new EcBlock(2, 43)),
+                new EcBlocks(18, new EcBlock(2, 15), new EcBlock(2, 16)),
+                new EcBlocks(22, new EcBlock(2, 11), new EcBlock(2, 12))
+            ),
+            new self(
+                6,
+                [6, 34],
+                new EcBlocks(18, new EcBlock(2, 68)),
+                new EcBlocks(16, new EcBlock(4, 27)),
+                new EcBlocks(24, new EcBlock(4, 19)),
+                new EcBlocks(28, new EcBlock(4, 15))
+            ),
+            new self(
+                7,
+                [6, 22, 38],
+                new EcBlocks(20, new EcBlock(2, 78)),
+                new EcBlocks(18, new EcBlock(4, 31)),
+                new EcBlocks(18, new EcBlock(2, 14), new EcBlock(4, 15)),
+                new EcBlocks(26, new EcBlock(4, 13), new EcBlock(1, 14))
+            ),
+            new self(
+                8,
+                [6, 24, 42],
+                new EcBlocks(24, new EcBlock(2, 97)),
+                new EcBlocks(22, new EcBlock(2, 38), new EcBlock(2, 39)),
+                new EcBlocks(22, new EcBlock(4, 18), new EcBlock(2, 19)),
+                new EcBlocks(26, new EcBlock(4, 14), new EcBlock(2, 15))
+            ),
+            new self(
+                9,
+                [6, 26, 46],
+                new EcBlocks(30, new EcBlock(2, 116)),
+                new EcBlocks(22, new EcBlock(3, 36), new EcBlock(2, 37)),
+                new EcBlocks(20, new EcBlock(4, 16), new EcBlock(4, 17)),
+                new EcBlocks(24, new EcBlock(4, 12), new EcBlock(4, 13))
+            ),
+            new self(
+                10,
+                [6, 28, 50],
+                new EcBlocks(18, new EcBlock(2, 68), new EcBlock(2, 69)),
+                new EcBlocks(26, new EcBlock(4, 43), new EcBlock(1, 44)),
+                new EcBlocks(24, new EcBlock(6, 19), new EcBlock(2, 20)),
+                new EcBlocks(28, new EcBlock(6, 15), new EcBlock(2, 16))
+            ),
+            new self(
+                11,
+                [6, 30, 54],
+                new EcBlocks(20, new EcBlock(4, 81)),
+                new EcBlocks(30, new EcBlock(1, 50), new EcBlock(4, 51)),
+                new EcBlocks(28, new EcBlock(4, 22), new EcBlock(4, 23)),
+                new EcBlocks(24, new EcBlock(3, 12), new EcBlock(8, 13))
+            ),
+            new self(
+                12,
+                [6, 32, 58],
+                new EcBlocks(24, new EcBlock(2, 92), new EcBlock(2, 93)),
+                new EcBlocks(22, new EcBlock(6, 36), new EcBlock(2, 37)),
+                new EcBlocks(26, new EcBlock(4, 20), new EcBlock(6, 21)),
+                new EcBlocks(28, new EcBlock(7, 14), new EcBlock(4, 15))
+            ),
+            new self(
+                13,
+                [6, 34, 62],
+                new EcBlocks(26, new EcBlock(4, 107)),
+                new EcBlocks(22, new EcBlock(8, 37), new EcBlock(1, 38)),
+                new EcBlocks(24, new EcBlock(8, 20), new EcBlock(4, 21)),
+                new EcBlocks(22, new EcBlock(12, 11), new EcBlock(4, 12))
+            ),
+            new self(
+                14,
+                [6, 26, 46, 66],
+                new EcBlocks(30, new EcBlock(3, 115), new EcBlock(1, 116)),
+                new EcBlocks(24, new EcBlock(4, 40), new EcBlock(5, 41)),
+                new EcBlocks(20, new EcBlock(11, 16), new EcBlock(5, 17)),
+                new EcBlocks(24, new EcBlock(11, 12), new EcBlock(5, 13))
+            ),
+            new self(
+                15,
+                [6, 26, 48, 70],
+                new EcBlocks(22, new EcBlock(5, 87), new EcBlock(1, 88)),
+                new EcBlocks(24, new EcBlock(5, 41), new EcBlock(5, 42)),
+                new EcBlocks(30, new EcBlock(5, 24), new EcBlock(7, 25)),
+                new EcBlocks(24, new EcBlock(11, 12), new EcBlock(7, 13))
+            ),
+            new self(
+                16,
+                [6, 26, 50, 74],
+                new EcBlocks(24, new EcBlock(5, 98), new EcBlock(1, 99)),
+                new EcBlocks(28, new EcBlock(7, 45), new EcBlock(3, 46)),
+                new EcBlocks(24, new EcBlock(15, 19), new EcBlock(2, 20)),
+                new EcBlocks(30, new EcBlock(3, 15), new EcBlock(13, 16))
+            ),
+            new self(
+                17,
+                [6, 30, 54, 78],
+                new EcBlocks(28, new EcBlock(1, 107), new EcBlock(5, 108)),
+                new EcBlocks(28, new EcBlock(10, 46), new EcBlock(1, 47)),
+                new EcBlocks(28, new EcBlock(1, 22), new EcBlock(15, 23)),
+                new EcBlocks(28, new EcBlock(2, 14), new EcBlock(17, 15))
+            ),
+            new self(
+                18,
+                [6, 30, 56, 82],
+                new EcBlocks(30, new EcBlock(5, 120), new EcBlock(1, 121)),
+                new EcBlocks(26, new EcBlock(9, 43), new EcBlock(4, 44)),
+                new EcBlocks(28, new EcBlock(17, 22), new EcBlock(1, 23)),
+                new EcBlocks(28, new EcBlock(2, 14), new EcBlock(19, 15))
+            ),
+            new self(
+                19,
+                [6, 30, 58, 86],
+                new EcBlocks(28, new EcBlock(3, 113), new EcBlock(4, 114)),
+                new EcBlocks(26, new EcBlock(3, 44), new EcBlock(11, 45)),
+                new EcBlocks(26, new EcBlock(17, 21), new EcBlock(4, 22)),
+                new EcBlocks(26, new EcBlock(9, 13), new EcBlock(16, 14))
+            ),
+            new self(
+                20,
+                [6, 34, 62, 90],
+                new EcBlocks(28, new EcBlock(3, 107), new EcBlock(5, 108)),
+                new EcBlocks(26, new EcBlock(3, 41), new EcBlock(13, 42)),
+                new EcBlocks(30, new EcBlock(15, 24), new EcBlock(5, 25)),
+                new EcBlocks(28, new EcBlock(15, 15), new EcBlock(10, 16))
+            ),
+            new self(
+                21,
+                [6, 28, 50, 72, 94],
+                new EcBlocks(28, new EcBlock(4, 116), new EcBlock(4, 117)),
+                new EcBlocks(26, new EcBlock(17, 42)),
+                new EcBlocks(28, new EcBlock(17, 22), new EcBlock(6, 23)),
+                new EcBlocks(30, new EcBlock(19, 16), new EcBlock(6, 17))
+            ),
+            new self(
+                22,
+                [6, 26, 50, 74, 98],
+                new EcBlocks(28, new EcBlock(2, 111), new EcBlock(7, 112)),
+                new EcBlocks(28, new EcBlock(17, 46)),
+                new EcBlocks(30, new EcBlock(7, 24), new EcBlock(16, 25)),
+                new EcBlocks(24, new EcBlock(34, 13))
+            ),
+            new self(
+                23,
+                [6, 30, 54, 78, 102],
+                new EcBlocks(30, new EcBlock(4, 121), new EcBlock(5, 122)),
+                new EcBlocks(28, new EcBlock(4, 47), new EcBlock(14, 48)),
+                new EcBlocks(30, new EcBlock(11, 24), new EcBlock(14, 25)),
+                new EcBlocks(30, new EcBlock(16, 15), new EcBlock(14, 16))
+            ),
+            new self(
+                24,
+                [6, 28, 54, 80, 106],
+                new EcBlocks(30, new EcBlock(6, 117), new EcBlock(4, 118)),
+                new EcBlocks(28, new EcBlock(6, 45), new EcBlock(14, 46)),
+                new EcBlocks(30, new EcBlock(11, 24), new EcBlock(16, 25)),
+                new EcBlocks(30, new EcBlock(30, 16), new EcBlock(2, 17))
+            ),
+            new self(
+                25,
+                [6, 32, 58, 84, 110],
+                new EcBlocks(26, new EcBlock(8, 106), new EcBlock(4, 107)),
+                new EcBlocks(28, new EcBlock(8, 47), new EcBlock(13, 48)),
+                new EcBlocks(30, new EcBlock(7, 24), new EcBlock(22, 25)),
+                new EcBlocks(30, new EcBlock(22, 15), new EcBlock(13, 16))
+            ),
+            new self(
+                26,
+                [6, 30, 58, 86, 114],
+                new EcBlocks(28, new EcBlock(10, 114), new EcBlock(2, 115)),
+                new EcBlocks(28, new EcBlock(19, 46), new EcBlock(4, 47)),
+                new EcBlocks(28, new EcBlock(28, 22), new EcBlock(6, 23)),
+                new EcBlocks(30, new EcBlock(33, 16), new EcBlock(4, 17))
+            ),
+            new self(
+                27,
+                [6, 34, 62, 90, 118],
+                new EcBlocks(30, new EcBlock(8, 122), new EcBlock(4, 123)),
+                new EcBlocks(28, new EcBlock(22, 45), new EcBlock(3, 46)),
+                new EcBlocks(30, new EcBlock(8, 23), new EcBlock(26, 24)),
+                new EcBlocks(30, new EcBlock(12, 15), new EcBlock(28, 16))
+            ),
+            new self(
+                28,
+                [6, 26, 50, 74, 98, 122],
+                new EcBlocks(30, new EcBlock(3, 117), new EcBlock(10, 118)),
+                new EcBlocks(28, new EcBlock(3, 45), new EcBlock(23, 46)),
+                new EcBlocks(30, new EcBlock(4, 24), new EcBlock(31, 25)),
+                new EcBlocks(30, new EcBlock(11, 15), new EcBlock(31, 16))
+            ),
+            new self(
+                29,
+                [6, 30, 54, 78, 102, 126],
+                new EcBlocks(30, new EcBlock(7, 116), new EcBlock(7, 117)),
+                new EcBlocks(28, new EcBlock(21, 45), new EcBlock(7, 46)),
+                new EcBlocks(30, new EcBlock(1, 23), new EcBlock(37, 24)),
+                new EcBlocks(30, new EcBlock(19, 15), new EcBlock(26, 16))
+            ),
+            new self(
+                30,
+                [6, 26, 52, 78, 104, 130],
+                new EcBlocks(30, new EcBlock(5, 115), new EcBlock(10, 116)),
+                new EcBlocks(28, new EcBlock(19, 47), new EcBlock(10, 48)),
+                new EcBlocks(30, new EcBlock(15, 24), new EcBlock(25, 25)),
+                new EcBlocks(30, new EcBlock(23, 15), new EcBlock(25, 16))
+            ),
+            new self(
+                31,
+                [6, 30, 56, 82, 108, 134],
+                new EcBlocks(30, new EcBlock(13, 115), new EcBlock(3, 116)),
+                new EcBlocks(28, new EcBlock(2, 46), new EcBlock(29, 47)),
+                new EcBlocks(30, new EcBlock(42, 24), new EcBlock(1, 25)),
+                new EcBlocks(30, new EcBlock(23, 15), new EcBlock(28, 16))
+            ),
+            new self(
+                32,
+                [6, 34, 60, 86, 112, 138],
+                new EcBlocks(30, new EcBlock(17, 115)),
+                new EcBlocks(28, new EcBlock(10, 46), new EcBlock(23, 47)),
+                new EcBlocks(30, new EcBlock(10, 24), new EcBlock(35, 25)),
+                new EcBlocks(30, new EcBlock(19, 15), new EcBlock(35, 16))
+            ),
+            new self(
+                33,
+                [6, 30, 58, 86, 114, 142],
+                new EcBlocks(30, new EcBlock(17, 115), new EcBlock(1, 116)),
+                new EcBlocks(28, new EcBlock(14, 46), new EcBlock(21, 47)),
+                new EcBlocks(30, new EcBlock(29, 24), new EcBlock(19, 25)),
+                new EcBlocks(30, new EcBlock(11, 15), new EcBlock(46, 16))
+            ),
+            new self(
+                34,
+                [6, 34, 62, 90, 118, 146],
+                new EcBlocks(30, new EcBlock(13, 115), new EcBlock(6, 116)),
+                new EcBlocks(28, new EcBlock(14, 46), new EcBlock(23, 47)),
+                new EcBlocks(30, new EcBlock(44, 24), new EcBlock(7, 25)),
+                new EcBlocks(30, new EcBlock(59, 16), new EcBlock(1, 17))
+            ),
+            new self(
+                35,
+                [6, 30, 54, 78, 102, 126, 150],
+                new EcBlocks(30, new EcBlock(12, 121), new EcBlock(7, 122)),
+                new EcBlocks(28, new EcBlock(12, 47), new EcBlock(26, 48)),
+                new EcBlocks(30, new EcBlock(39, 24), new EcBlock(14, 25)),
+                new EcBlocks(30, new EcBlock(22, 15), new EcBlock(41, 16))
+            ),
+            new self(
+                36,
+                [6, 24, 50, 76, 102, 128, 154],
+                new EcBlocks(30, new EcBlock(6, 121), new EcBlock(14, 122)),
+                new EcBlocks(28, new EcBlock(6, 47), new EcBlock(34, 48)),
+                new EcBlocks(30, new EcBlock(46, 24), new EcBlock(10, 25)),
+                new EcBlocks(30, new EcBlock(2, 15), new EcBlock(64, 16))
+            ),
+            new self(
+                37,
+                [6, 28, 54, 80, 106, 132, 158],
+                new EcBlocks(30, new EcBlock(17, 122), new EcBlock(4, 123)),
+                new EcBlocks(28, new EcBlock(29, 46), new EcBlock(14, 47)),
+                new EcBlocks(30, new EcBlock(49, 24), new EcBlock(10, 25)),
+                new EcBlocks(30, new EcBlock(24, 15), new EcBlock(46, 16))
+            ),
+            new self(
+                38,
+                [6, 32, 58, 84, 110, 136, 162],
+                new EcBlocks(30, new EcBlock(4, 122), new EcBlock(18, 123)),
+                new EcBlocks(28, new EcBlock(13, 46), new EcBlock(32, 47)),
+                new EcBlocks(30, new EcBlock(48, 24), new EcBlock(14, 25)),
+                new EcBlocks(30, new EcBlock(42, 15), new EcBlock(32, 16))
+            ),
+            new self(
+                39,
+                [6, 26, 54, 82, 110, 138, 166],
+                new EcBlocks(30, new EcBlock(20, 117), new EcBlock(4, 118)),
+                new EcBlocks(28, new EcBlock(40, 47), new EcBlock(7, 48)),
+                new EcBlocks(30, new EcBlock(43, 24), new EcBlock(22, 25)),
+                new EcBlocks(30, new EcBlock(10, 15), new EcBlock(67, 16))
+            ),
+            new self(
+                40,
+                [6, 30, 58, 86, 114, 142, 170],
+                new EcBlocks(30, new EcBlock(19, 118), new EcBlock(6, 119)),
+                new EcBlocks(28, new EcBlock(18, 47), new EcBlock(31, 48)),
+                new EcBlocks(30, new EcBlock(34, 24), new EcBlock(34, 25)),
+                new EcBlocks(30, new EcBlock(20, 15), new EcBlock(61, 16))
+            ),
+        ];
+    }
+}

vendor/bacon/bacon-qr-code/src/Encoder/BlockPair.php

@@ -0,0 +1,58 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Encoder;
+
+use SplFixedArray;
+
+/**
+ * Block pair.
+ */
+final class BlockPair
+{
+    /**
+     * Data bytes in the block.
+     *
+     * @var SplFixedArray<int>
+     */
+    private $dataBytes;
+
+    /**
+     * Error correction bytes in the block.
+     *
+     * @var SplFixedArray<int>
+     */
+    private $errorCorrectionBytes;
+
+    /**
+     * Creates a new block pair.
+     *
+     * @param SplFixedArray<int> $data
+     * @param SplFixedArray<int> $errorCorrection
+     */
+    public function __construct(SplFixedArray $data, SplFixedArray $errorCorrection)
+    {
+        $this->dataBytes = $data;
+        $this->errorCorrectionBytes = $errorCorrection;
+    }
+
+    /**
+     * Gets the data bytes.
+     *
+     * @return SplFixedArray<int>
+     */
+    public function getDataBytes() : SplFixedArray
+    {
+        return $this->dataBytes;
+    }
+
+    /**
+     * Gets the error correction bytes.
+     *
+     * @return SplFixedArray<int>
+     */
+    public function getErrorCorrectionBytes() : SplFixedArray
+    {
+        return $this->errorCorrectionBytes;
+    }
+}

vendor/bacon/bacon-qr-code/src/Encoder/ByteMatrix.php

@@ -0,0 +1,150 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Encoder;
+
+use SplFixedArray;
+use Traversable;
+
+/**
+ * Byte matrix.
+ */
+final class ByteMatrix
+{
+    /**
+     * Bytes in the matrix, represented as array.
+     *
+     * @var SplFixedArray<SplFixedArray<int>>
+     */
+    private $bytes;
+
+    /**
+     * Width of the matrix.
+     *
+     * @var int
+     */
+    private $width;
+
+    /**
+     * Height of the matrix.
+     *
+     * @var int
+     */
+    private $height;
+
+    public function __construct(int $width, int $height)
+    {
+        $this->height = $height;
+        $this->width = $width;
+        $this->bytes = new SplFixedArray($height);
+
+        for ($y = 0; $y < $height; ++$y) {
+            $this->bytes[$y] = SplFixedArray::fromArray(array_fill(0, $width, 0));
+        }
+    }
+
+    /**
+     * Gets the width of the matrix.
+     */
+    public function getWidth() : int
+    {
+        return $this->width;
+    }
+
+    /**
+     * Gets the height of the matrix.
+     */
+    public function getHeight() : int
+    {
+        return $this->height;
+    }
+
+    /**
+     * Gets the internal representation of the matrix.
+     *
+     * @return SplFixedArray<SplFixedArray<int>>
+     */
+    public function getArray() : SplFixedArray
+    {
+        return $this->bytes;
+    }
+
+    /**
+     * @return Traversable<int>
+     */
+    public function getBytes() : Traversable
+    {
+        foreach ($this->bytes as $row) {
+            foreach ($row as $byte) {
+                yield $byte;
+            }
+        }
+    }
+
+    /**
+     * Gets the byte for a specific position.
+     */
+    public function get(int $x, int $y) : int
+    {
+        return $this->bytes[$y][$x];
+    }
+
+    /**
+     * Sets the byte for a specific position.
+     */
+    public function set(int $x, int $y, int $value) : void
+    {
+        $this->bytes[$y][$x] = $value;
+    }
+
+    /**
+     * Clears the matrix with a specific value.
+     */
+    public function clear(int $value) : void
+    {
+        for ($y = 0; $y < $this->height; ++$y) {
+            for ($x = 0; $x < $this->width; ++$x) {
+                $this->bytes[$y][$x] = $value;
+            }
+        }
+    }
+
+    public function __clone()
+    {
+        $this->bytes = clone $this->bytes;
+
+        foreach ($this->bytes as $index => $row) {
+            $this->bytes[$index] = clone $row;
+        }
+    }
+
+    /**
+     * Returns a string representation of the matrix.
+     */
+    public function __toString() : string
+    {
+        $result = '';
+
+        for ($y = 0; $y < $this->height; $y++) {
+            for ($x = 0; $x < $this->width; $x++) {
+                switch ($this->bytes[$y][$x]) {
+                    case 0:
+                        $result .= ' 0';
+                        break;
+
+                    case 1:
+                        $result .= ' 1';
+                        break;
+
+                    default:
+                        $result .= '  ';
+                        break;
+                }
+            }
+
+            $result .= "\n";
+        }
+
+        return $result;
+    }
+}

vendor/bacon/bacon-qr-code/src/Encoder/Encoder.php

@@ -0,0 +1,652 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Encoder;
+
+use BaconQrCode\Common\BitArray;
+use BaconQrCode\Common\CharacterSetEci;
+use BaconQrCode\Common\ErrorCorrectionLevel;
+use BaconQrCode\Common\Mode;
+use BaconQrCode\Common\ReedSolomonCodec;
+use BaconQrCode\Common\Version;
+use BaconQrCode\Exception\WriterException;
+use SplFixedArray;
+
+/**
+ * Encoder.
+ */
+final class Encoder
+{
+    /**
+     * Default byte encoding.
+     */
+    public const DEFAULT_BYTE_MODE_ECODING = 'ISO-8859-1';
+
+    /**
+     * The original table is defined in the table 5 of JISX0510:2004 (p.19).
+     */
+    private const ALPHANUMERIC_TABLE = [
+        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  // 0x00-0x0f
+        -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,  // 0x10-0x1f
+        36, -1, -1, -1, 37, 38, -1, -1, -1, -1, 39, 40, -1, 41, 42, 43,  // 0x20-0x2f
+        0,   1,  2,  3,  4,  5,  6,  7,  8,  9, 44, -1, -1, -1, -1, -1,  // 0x30-0x3f
+        -1, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24,  // 0x40-0x4f
+        25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, -1, -1, -1, -1, -1,  // 0x50-0x5f
+    ];
+
+    /**
+     * Codec cache.
+     *
+     * @var array
+     */
+    private static $codecs = [];
+
+    /**
+     * Encodes "content" with the error correction level "ecLevel".
+     */
+    public static function encode(
+        string $content,
+        ErrorCorrectionLevel $ecLevel,
+        string $encoding = self::DEFAULT_BYTE_MODE_ECODING
+    ) : QrCode {
+        // Pick an encoding mode appropriate for the content. Note that this
+        // will not attempt to use multiple modes / segments even if that were
+        // more efficient. Would be nice.
+        $mode = self::chooseMode($content, $encoding);
+
+        // This will store the header information, like mode and length, as well
+        // as "header" segments like an ECI segment.
+        $headerBits = new BitArray();
+
+        // Append ECI segment if applicable
+        if (Mode::BYTE() === $mode && self::DEFAULT_BYTE_MODE_ECODING !== $encoding) {
+            $eci = CharacterSetEci::getCharacterSetEciByName($encoding);
+
+            if (null !== $eci) {
+                self::appendEci($eci, $headerBits);
+            }
+        }
+
+        // (With ECI in place,) Write the mode marker
+        self::appendModeInfo($mode, $headerBits);
+
+        // Collect data within the main segment, separately, to count its size
+        // if needed. Don't add it to main payload yet.
+        $dataBits = new BitArray();
+        self::appendBytes($content, $mode, $dataBits, $encoding);
+
+        // Hard part: need to know version to know how many bits length takes.
+        // But need to know how many bits it takes to know version. First we
+        // take a guess at version by assuming version will be the minimum, 1:
+        $provisionalBitsNeeded = $headerBits->getSize()
+            + $mode->getCharacterCountBits(Version::getVersionForNumber(1))
+            + $dataBits->getSize();
+        $provisionalVersion = self::chooseVersion($provisionalBitsNeeded, $ecLevel);
+
+        // Use that guess to calculate the right version. I am still not sure
+        // this works in 100% of cases.
+        $bitsNeeded = $headerBits->getSize()
+            + $mode->getCharacterCountBits($provisionalVersion)
+            + $dataBits->getSize();
+        $version = self::chooseVersion($bitsNeeded, $ecLevel);
+
+        $headerAndDataBits = new BitArray();
+        $headerAndDataBits->appendBitArray($headerBits);
+
+        // Find "length" of main segment and write it.
+        $numLetters = (Mode::BYTE() === $mode ? $dataBits->getSizeInBytes() : strlen($content));
+        self::appendLengthInfo($numLetters, $version, $mode, $headerAndDataBits);
+
+        // Put data together into the overall payload.
+        $headerAndDataBits->appendBitArray($dataBits);
+        $ecBlocks = $version->getEcBlocksForLevel($ecLevel);
+        $numDataBytes = $version->getTotalCodewords() - $ecBlocks->getTotalEcCodewords();
+
+        // Terminate the bits properly.
+        self::terminateBits($numDataBytes, $headerAndDataBits);
+
+        // Interleave data bits with error correction code.
+        $finalBits = self::interleaveWithEcBytes(
+            $headerAndDataBits,
+            $version->getTotalCodewords(),
+            $numDataBytes,
+            $ecBlocks->getNumBlocks()
+        );
+
+        // Choose the mask pattern.
+        $dimension = $version->getDimensionForVersion();
+        $matrix = new ByteMatrix($dimension, $dimension);
+        $maskPattern = self::chooseMaskPattern($finalBits, $ecLevel, $version, $matrix);
+
+        // Build the matrix.
+        MatrixUtil::buildMatrix($finalBits, $ecLevel, $version, $maskPattern, $matrix);
+
+        return new QrCode($mode, $ecLevel, $version, $maskPattern, $matrix);
+    }
+
+    /**
+     * Gets the alphanumeric code for a byte.
+     */
+    private static function getAlphanumericCode(int $code) : int
+    {
+        if (isset(self::ALPHANUMERIC_TABLE[$code])) {
+            return self::ALPHANUMERIC_TABLE[$code];
+        }
+
+        return -1;
+    }
+
+    /**
+     * Chooses the best mode for a given content.
+     */
+    private static function chooseMode(string $content, string $encoding = null) : Mode
+    {
+        if (null !== $encoding && 0 === strcasecmp($encoding, 'SHIFT-JIS')) {
+            return self::isOnlyDoubleByteKanji($content) ? Mode::KANJI() : Mode::BYTE();
+        }
+
+        $hasNumeric = false;
+        $hasAlphanumeric = false;
+        $contentLength = strlen($content);
+
+        for ($i = 0; $i < $contentLength; ++$i) {
+            $char = $content[$i];
+
+            if (ctype_digit($char)) {
+                $hasNumeric = true;
+            } elseif (-1 !== self::getAlphanumericCode(ord($char))) {
+                $hasAlphanumeric = true;
+            } else {
+                return Mode::BYTE();
+            }
+        }
+
+        if ($hasAlphanumeric) {
+            return Mode::ALPHANUMERIC();
+        } elseif ($hasNumeric) {
+            return Mode::NUMERIC();
+        }
+
+        return Mode::BYTE();
+    }
+
+    /**
+     * Calculates the mask penalty for a matrix.
+     */
+    private static function calculateMaskPenalty(ByteMatrix $matrix) : int
+    {
+        return (
+            MaskUtil::applyMaskPenaltyRule1($matrix)
+            + MaskUtil::applyMaskPenaltyRule2($matrix)
+            + MaskUtil::applyMaskPenaltyRule3($matrix)
+            + MaskUtil::applyMaskPenaltyRule4($matrix)
+        );
+    }
+
+    /**
+     * Checks if content only consists of double-byte kanji characters.
+     */
+    private static function isOnlyDoubleByteKanji(string $content) : bool
+    {
+        $bytes = @iconv('utf-8', 'SHIFT-JIS', $content);
+
+        if (false === $bytes) {
+            return false;
+        }
+
+        $length = strlen($bytes);
+
+        if (0 !== $length % 2) {
+            return false;
+        }
+
+        for ($i = 0; $i < $length; $i += 2) {
+            $byte = $bytes[$i] & 0xff;
+
+            if (($byte < 0x81 || $byte > 0x9f) && $byte < 0xe0 || $byte > 0xeb) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Chooses the best mask pattern for a matrix.
+     */
+    private static function chooseMaskPattern(
+        BitArray $bits,
+        ErrorCorrectionLevel $ecLevel,
+        Version $version,
+        ByteMatrix $matrix
+    ) : int {
+        $minPenalty = PHP_INT_MAX;
+        $bestMaskPattern = -1;
+
+        for ($maskPattern = 0; $maskPattern < QrCode::NUM_MASK_PATTERNS; ++$maskPattern) {
+            MatrixUtil::buildMatrix($bits, $ecLevel, $version, $maskPattern, $matrix);
+            $penalty = self::calculateMaskPenalty($matrix);
+
+            if ($penalty < $minPenalty) {
+                $minPenalty = $penalty;
+                $bestMaskPattern = $maskPattern;
+            }
+        }
+
+        return $bestMaskPattern;
+    }
+
+    /**
+     * Chooses the best version for the input.
+     *
+     * @throws WriterException if data is too big
+     */
+    private static function chooseVersion(int $numInputBits, ErrorCorrectionLevel $ecLevel) : Version
+    {
+        for ($versionNum = 1; $versionNum <= 40; ++$versionNum) {
+            $version = Version::getVersionForNumber($versionNum);
+            $numBytes = $version->getTotalCodewords();
+
+            $ecBlocks = $version->getEcBlocksForLevel($ecLevel);
+            $numEcBytes = $ecBlocks->getTotalEcCodewords();
+
+            $numDataBytes = $numBytes - $numEcBytes;
+            $totalInputBytes = intdiv($numInputBits + 8, 8);
+
+            if ($numDataBytes >= $totalInputBytes) {
+                return $version;
+            }
+        }
+
+        throw new WriterException('Data too big');
+    }
+
+    /**
+     * Terminates the bits in a bit array.
+     *
+     * @throws WriterException if data bits cannot fit in the QR code
+     * @throws WriterException if bits size does not equal the capacity
+     */
+    private static function terminateBits(int $numDataBytes, BitArray $bits) : void
+    {
+        $capacity = $numDataBytes << 3;
+
+        if ($bits->getSize() > $capacity) {
+            throw new WriterException('Data bits cannot fit in the QR code');
+        }
+
+        for ($i = 0; $i < 4 && $bits->getSize() < $capacity; ++$i) {
+            $bits->appendBit(false);
+        }
+
+        $numBitsInLastByte = $bits->getSize() & 0x7;
+
+        if ($numBitsInLastByte > 0) {
+            for ($i = $numBitsInLastByte; $i < 8; ++$i) {
+                $bits->appendBit(false);
+            }
+        }
+
+        $numPaddingBytes = $numDataBytes - $bits->getSizeInBytes();
+
+        for ($i = 0; $i < $numPaddingBytes; ++$i) {
+            $bits->appendBits(0 === ($i & 0x1) ? 0xec : 0x11, 8);
+        }
+
+        if ($bits->getSize() !== $capacity) {
+            throw new WriterException('Bits size does not equal capacity');
+        }
+    }
+
+    /**
+     * Gets number of data- and EC bytes for a block ID.
+     *
+     * @return int[]
+     * @throws WriterException if block ID is too large
+     * @throws WriterException if EC bytes mismatch
+     * @throws WriterException if RS blocks mismatch
+     * @throws WriterException if total bytes mismatch
+     */
+    private static function getNumDataBytesAndNumEcBytesForBlockId(
+        int $numTotalBytes,
+        int $numDataBytes,
+        int $numRsBlocks,
+        int $blockId
+    ) : array {
+        if ($blockId >= $numRsBlocks) {
+            throw new WriterException('Block ID too large');
+        }
+
+        $numRsBlocksInGroup2 = $numTotalBytes % $numRsBlocks;
+        $numRsBlocksInGroup1 = $numRsBlocks - $numRsBlocksInGroup2;
+        $numTotalBytesInGroup1 = intdiv($numTotalBytes, $numRsBlocks);
+        $numTotalBytesInGroup2 = $numTotalBytesInGroup1 + 1;
+        $numDataBytesInGroup1 = intdiv($numDataBytes, $numRsBlocks);
+        $numDataBytesInGroup2 = $numDataBytesInGroup1 + 1;
+        $numEcBytesInGroup1 = $numTotalBytesInGroup1 - $numDataBytesInGroup1;
+        $numEcBytesInGroup2 = $numTotalBytesInGroup2 - $numDataBytesInGroup2;
+
+        if ($numEcBytesInGroup1 !== $numEcBytesInGroup2) {
+            throw new WriterException('EC bytes mismatch');
+        }
+
+        if ($numRsBlocks !== $numRsBlocksInGroup1 + $numRsBlocksInGroup2) {
+            throw new WriterException('RS blocks mismatch');
+        }
+
+        if ($numTotalBytes !==
+            (($numDataBytesInGroup1 + $numEcBytesInGroup1) * $numRsBlocksInGroup1)
+            + (($numDataBytesInGroup2 + $numEcBytesInGroup2) * $numRsBlocksInGroup2)
+        ) {
+            throw new WriterException('Total bytes mismatch');
+        }
+
+        if ($blockId < $numRsBlocksInGroup1) {
+            return [$numDataBytesInGroup1, $numEcBytesInGroup1];
+        } else {
+            return [$numDataBytesInGroup2, $numEcBytesInGroup2];
+        }
+    }
+
+    /**
+     * Interleaves data with EC bytes.
+     *
+     * @throws WriterException if number of bits and data bytes does not match
+     * @throws WriterException if data bytes does not match offset
+     * @throws WriterException if an interleaving error occurs
+     */
+    private static function interleaveWithEcBytes(
+        BitArray $bits,
+        int $numTotalBytes,
+        int $numDataBytes,
+        int $numRsBlocks
+    ) : BitArray {
+        if ($bits->getSizeInBytes() !== $numDataBytes) {
+            throw new WriterException('Number of bits and data bytes does not match');
+        }
+
+        $dataBytesOffset = 0;
+        $maxNumDataBytes = 0;
+        $maxNumEcBytes   = 0;
+
+        $blocks = new SplFixedArray($numRsBlocks);
+
+        for ($i = 0; $i < $numRsBlocks; ++$i) {
+            list($numDataBytesInBlock, $numEcBytesInBlock) = self::getNumDataBytesAndNumEcBytesForBlockId(
+                $numTotalBytes,
+                $numDataBytes,
+                $numRsBlocks,
+                $i
+            );
+
+            $size = $numDataBytesInBlock;
+            $dataBytes = $bits->toBytes(8 * $dataBytesOffset, $size);
+            $ecBytes = self::generateEcBytes($dataBytes, $numEcBytesInBlock);
+            $blocks[$i] = new BlockPair($dataBytes, $ecBytes);
+
+            $maxNumDataBytes = max($maxNumDataBytes, $size);
+            $maxNumEcBytes = max($maxNumEcBytes, count($ecBytes));
+            $dataBytesOffset += $numDataBytesInBlock;
+        }
+
+        if ($numDataBytes !== $dataBytesOffset) {
+            throw new WriterException('Data bytes does not match offset');
+        }
+
+        $result = new BitArray();
+
+        for ($i = 0; $i < $maxNumDataBytes; ++$i) {
+            foreach ($blocks as $block) {
+                $dataBytes = $block->getDataBytes();
+
+                if ($i < count($dataBytes)) {
+                    $result->appendBits($dataBytes[$i], 8);
+                }
+            }
+        }
+
+        for ($i = 0; $i < $maxNumEcBytes; ++$i) {
+            foreach ($blocks as $block) {
+                $ecBytes = $block->getErrorCorrectionBytes();
+
+                if ($i < count($ecBytes)) {
+                    $result->appendBits($ecBytes[$i], 8);
+                }
+            }
+        }
+
+        if ($numTotalBytes !== $result->getSizeInBytes()) {
+            throw new WriterException(
+                'Interleaving error: ' . $numTotalBytes . ' and ' . $result->getSizeInBytes() . ' differ'
+            );
+        }
+
+        return $result;
+    }
+
+    /**
+     * Generates EC bytes for given data.
+     *
+     * @param  SplFixedArray<int> $dataBytes
+     * @return SplFixedArray<int>
+     */
+    private static function generateEcBytes(SplFixedArray $dataBytes, int $numEcBytesInBlock) : SplFixedArray
+    {
+        $numDataBytes = count($dataBytes);
+        $toEncode = new SplFixedArray($numDataBytes + $numEcBytesInBlock);
+
+        for ($i = 0; $i < $numDataBytes; $i++) {
+            $toEncode[$i] = $dataBytes[$i] & 0xff;
+        }
+
+        $ecBytes = new SplFixedArray($numEcBytesInBlock);
+        $codec = self::getCodec($numDataBytes, $numEcBytesInBlock);
+        $codec->encode($toEncode, $ecBytes);
+
+        return $ecBytes;
+    }
+
+    /**
+     * Gets an RS codec and caches it.
+     */
+    private static function getCodec(int $numDataBytes, int $numEcBytesInBlock) : ReedSolomonCodec
+    {
+        $cacheId = $numDataBytes . '-' . $numEcBytesInBlock;
+
+        if (isset(self::$codecs[$cacheId])) {
+            return self::$codecs[$cacheId];
+        }
+
+        return self::$codecs[$cacheId] = new ReedSolomonCodec(
+            8,
+            0x11d,
+            0,
+            1,
+            $numEcBytesInBlock,
+            255 - $numDataBytes - $numEcBytesInBlock
+        );
+    }
+
+    /**
+     * Appends mode information to a bit array.
+     */
+    private static function appendModeInfo(Mode $mode, BitArray $bits) : void
+    {
+        $bits->appendBits($mode->getBits(), 4);
+    }
+
+    /**
+     * Appends length information to a bit array.
+     *
+     * @throws WriterException if num letters is bigger than expected
+     */
+    private static function appendLengthInfo(int $numLetters, Version $version, Mode $mode, BitArray $bits) : void
+    {
+        $numBits = $mode->getCharacterCountBits($version);
+
+        if ($numLetters >= (1 << $numBits)) {
+            throw new WriterException($numLetters . ' is bigger than ' . ((1 << $numBits) - 1));
+        }
+
+        $bits->appendBits($numLetters, $numBits);
+    }
+
+    /**
+     * Appends bytes to a bit array in a specific mode.
+     *
+     * @throws WriterException if an invalid mode was supplied
+     */
+    private static function appendBytes(string $content, Mode $mode, BitArray $bits, string $encoding) : void
+    {
+        switch ($mode) {
+            case Mode::NUMERIC():
+                self::appendNumericBytes($content, $bits);
+                break;
+
+            case Mode::ALPHANUMERIC():
+                self::appendAlphanumericBytes($content, $bits);
+                break;
+
+            case Mode::BYTE():
+                self::append8BitBytes($content, $bits, $encoding);
+                break;
+
+            case Mode::KANJI():
+                self::appendKanjiBytes($content, $bits);
+                break;
+
+            default:
+                throw new WriterException('Invalid mode: ' . $mode);
+        }
+    }
+
+    /**
+     * Appends numeric bytes to a bit array.
+     */
+    private static function appendNumericBytes(string $content, BitArray $bits) : void
+    {
+        $length = strlen($content);
+        $i = 0;
+
+        while ($i < $length) {
+            $num1 = (int) $content[$i];
+
+            if ($i + 2 < $length) {
+                // Encode three numeric letters in ten bits.
+                $num2 = (int) $content[$i + 1];
+                $num3 = (int) $content[$i + 2];
+                $bits->appendBits($num1 * 100 + $num2 * 10 + $num3, 10);
+                $i += 3;
+            } elseif ($i + 1 < $length) {
+                // Encode two numeric letters in seven bits.
+                $num2 = (int) $content[$i + 1];
+                $bits->appendBits($num1 * 10 + $num2, 7);
+                $i += 2;
+            } else {
+                // Encode one numeric letter in four bits.
+                $bits->appendBits($num1, 4);
+                ++$i;
+            }
+        }
+    }
+
+    /**
+     * Appends alpha-numeric bytes to a bit array.
+     *
+     * @throws WriterException if an invalid alphanumeric code was found
+     */
+    private static function appendAlphanumericBytes(string $content, BitArray $bits) : void
+    {
+        $length = strlen($content);
+        $i = 0;
+
+        while ($i < $length) {
+            $code1 = self::getAlphanumericCode(ord($content[$i]));
+
+            if (-1 === $code1) {
+                throw new WriterException('Invalid alphanumeric code');
+            }
+
+            if ($i + 1 < $length) {
+                $code2 = self::getAlphanumericCode(ord($content[$i + 1]));
+
+                if (-1 === $code2) {
+                    throw new WriterException('Invalid alphanumeric code');
+                }
+
+                // Encode two alphanumeric letters in 11 bits.
+                $bits->appendBits($code1 * 45 + $code2, 11);
+                $i += 2;
+            } else {
+                // Encode one alphanumeric letter in six bits.
+                $bits->appendBits($code1, 6);
+                ++$i;
+            }
+        }
+    }
+
+    /**
+     * Appends regular 8-bit bytes to a bit array.
+     *
+     * @throws WriterException if content cannot be encoded to target encoding
+     */
+    private static function append8BitBytes(string $content, BitArray $bits, string $encoding) : void
+    {
+        $bytes = @iconv('utf-8', $encoding, $content);
+
+        if (false === $bytes) {
+            throw new WriterException('Could not encode content to ' . $encoding);
+        }
+
+        $length = strlen($bytes);
+
+        for ($i = 0; $i < $length; $i++) {
+            $bits->appendBits(ord($bytes[$i]), 8);
+        }
+    }
+
+    /**
+     * Appends KANJI bytes to a bit array.
+     *
+     * @throws WriterException if content does not seem to be encoded in SHIFT-JIS
+     * @throws WriterException if an invalid byte sequence occurs
+     */
+    private static function appendKanjiBytes(string $content, BitArray $bits) : void
+    {
+        if (strlen($content) % 2 > 0) {
+            // We just do a simple length check here. The for loop will check
+            // individual characters.
+            throw new WriterException('Content does not seem to be encoded in SHIFT-JIS');
+        }
+
+        $length = strlen($content);
+
+        for ($i = 0; $i < $length; $i += 2) {
+            $byte1 = ord($content[$i]) & 0xff;
+            $byte2 = ord($content[$i + 1]) & 0xff;
+            $code = ($byte1 << 8) | $byte2;
+
+            if ($code >= 0x8140 && $code <= 0x9ffc) {
+                $subtracted = $code - 0x8140;
+            } elseif ($code >= 0xe040 && $code <= 0xebbf) {
+                $subtracted = $code - 0xc140;
+            } else {
+                throw new WriterException('Invalid byte sequence');
+            }
+
+            $encoded = (($subtracted >> 8) * 0xc0) + ($subtracted & 0xff);
+
+            $bits->appendBits($encoded, 13);
+        }
+    }
+
+    /**
+     * Appends ECI information to a bit array.
+     */
+    private static function appendEci(CharacterSetEci $eci, BitArray $bits) : void
+    {
+        $mode = Mode::ECI();
+        $bits->appendBits($mode->getBits(), 4);
+        $bits->appendBits($eci->getValue(), 8);
+    }
+}

vendor/bacon/bacon-qr-code/src/Encoder/MaskUtil.php

@@ -0,0 +1,271 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Encoder;
+
+use BaconQrCode\Common\BitUtils;
+use BaconQrCode\Exception\InvalidArgumentException;
+
+/**
+ * Mask utility.
+ */
+final class MaskUtil
+{
+    /**#@+
+     * Penalty weights from section 6.8.2.1
+     */
+    const N1 = 3;
+    const N2 = 3;
+    const N3 = 40;
+    const N4 = 10;
+    /**#@-*/
+
+    private function __construct()
+    {
+    }
+
+    /**
+     * Applies mask penalty rule 1 and returns the penalty.
+     *
+     * Finds repetitive cells with the same color and gives penalty to them.
+     * Example: 00000 or 11111.
+     */
+    public static function applyMaskPenaltyRule1(ByteMatrix $matrix) : int
+    {
+        return (
+            self::applyMaskPenaltyRule1Internal($matrix, true)
+            + self::applyMaskPenaltyRule1Internal($matrix, false)
+        );
+    }
+
+    /**
+     * Applies mask penalty rule 2 and returns the penalty.
+     *
+     * Finds 2x2 blocks with the same color and gives penalty to them. This is
+     * actually equivalent to the spec's rule, which is to find MxN blocks and
+     * give a penalty proportional to (M-1)x(N-1), because this is the number of
+     * 2x2 blocks inside such a block.
+     */
+    public static function applyMaskPenaltyRule2(ByteMatrix $matrix) : int
+    {
+        $penalty = 0;
+        $array = $matrix->getArray();
+        $width = $matrix->getWidth();
+        $height = $matrix->getHeight();
+
+        for ($y = 0; $y < $height - 1; ++$y) {
+            for ($x = 0; $x < $width - 1; ++$x) {
+                $value = $array[$y][$x];
+
+                if ($value === $array[$y][$x + 1]
+                    && $value === $array[$y + 1][$x]
+                    && $value === $array[$y + 1][$x + 1]
+                ) {
+                    ++$penalty;
+                }
+            }
+        }
+
+        return self::N2 * $penalty;
+    }
+
+    /**
+     * Applies mask penalty rule 3 and returns the penalty.
+     *
+     * Finds consecutive cells of 00001011101 or 10111010000, and gives penalty
+     * to them. If we find patterns like 000010111010000, we give penalties
+     * twice (i.e. 40 * 2).
+     */
+    public static function applyMaskPenaltyRule3(ByteMatrix $matrix) : int
+    {
+        $penalty = 0;
+        $array = $matrix->getArray();
+        $width = $matrix->getWidth();
+        $height = $matrix->getHeight();
+
+        for ($y = 0; $y < $height; ++$y) {
+            for ($x = 0; $x < $width; ++$x) {
+                if ($x + 6 < $width
+                    && 1 === $array[$y][$x]
+                    && 0 === $array[$y][$x + 1]
+                    && 1 === $array[$y][$x + 2]
+                    && 1 === $array[$y][$x + 3]
+                    && 1 === $array[$y][$x + 4]
+                    && 0 === $array[$y][$x + 5]
+                    && 1 === $array[$y][$x + 6]
+                    && (
+                        (
+                            $x + 10 < $width
+                            && 0 === $array[$y][$x + 7]
+                            && 0 === $array[$y][$x + 8]
+                            && 0 === $array[$y][$x + 9]
+                            && 0 === $array[$y][$x + 10]
+                        )
+                        || (
+                            $x - 4 >= 0
+                            && 0 === $array[$y][$x - 1]
+                            && 0 === $array[$y][$x - 2]
+                            && 0 === $array[$y][$x - 3]
+                            && 0 === $array[$y][$x - 4]
+                        )
+                    )
+                ) {
+                    $penalty += self::N3;
+                }
+
+                if ($y + 6 < $height
+                    && 1 === $array[$y][$x]
+                    && 0 === $array[$y + 1][$x]
+                    && 1 === $array[$y + 2][$x]
+                    && 1 === $array[$y + 3][$x]
+                    && 1 === $array[$y + 4][$x]
+                    && 0 === $array[$y + 5][$x]
+                    && 1 === $array[$y + 6][$x]
+                    && (
+                        (
+                            $y + 10 < $height
+                            && 0 === $array[$y + 7][$x]
+                            && 0 === $array[$y + 8][$x]
+                            && 0 === $array[$y + 9][$x]
+                            && 0 === $array[$y + 10][$x]
+                        )
+                        || (
+                            $y - 4 >= 0
+                            && 0 === $array[$y - 1][$x]
+                            && 0 === $array[$y - 2][$x]
+                            && 0 === $array[$y - 3][$x]
+                            && 0 === $array[$y - 4][$x]
+                        )
+                    )
+                ) {
+                    $penalty += self::N3;
+                }
+            }
+        }
+
+        return $penalty;
+    }
+
+    /**
+     * Applies mask penalty rule 4 and returns the penalty.
+     *
+     * Calculates the ratio of dark cells and gives penalty if the ratio is far
+     * from 50%. It gives 10 penalty for 5% distance.
+     */
+    public static function applyMaskPenaltyRule4(ByteMatrix $matrix) : int
+    {
+        $numDarkCells = 0;
+
+        $array = $matrix->getArray();
+        $width = $matrix->getWidth();
+        $height = $matrix->getHeight();
+
+        for ($y = 0; $y < $height; ++$y) {
+            $arrayY = $array[$y];
+
+            for ($x = 0; $x < $width; ++$x) {
+                if (1 === $arrayY[$x]) {
+                    ++$numDarkCells;
+                }
+            }
+        }
+
+        $numTotalCells = $height * $width;
+        $darkRatio = $numDarkCells / $numTotalCells;
+        $fixedPercentVariances = (int) (abs($darkRatio - 0.5) * 20);
+
+        return $fixedPercentVariances * self::N4;
+    }
+
+    /**
+     * Returns the mask bit for "getMaskPattern" at "x" and "y".
+     *
+     * See 8.8 of JISX0510:2004 for mask pattern conditions.
+     *
+     * @throws InvalidArgumentException if an invalid mask pattern was supplied
+     */
+    public static function getDataMaskBit(int $maskPattern, int $x, int $y) : bool
+    {
+        switch ($maskPattern) {
+            case 0:
+                $intermediate = ($y + $x) & 0x1;
+                break;
+
+            case 1:
+                $intermediate = $y & 0x1;
+                break;
+
+            case 2:
+                $intermediate = $x % 3;
+                break;
+
+            case 3:
+                $intermediate = ($y + $x) % 3;
+                break;
+
+            case 4:
+                $intermediate = (BitUtils::unsignedRightShift($y, 1) + (int) ($x / 3)) & 0x1;
+                break;
+
+            case 5:
+                $temp = $y * $x;
+                $intermediate = ($temp & 0x1) + ($temp % 3);
+                break;
+
+            case 6:
+                $temp = $y * $x;
+                $intermediate = (($temp & 0x1) + ($temp % 3)) & 0x1;
+                break;
+
+            case 7:
+                $temp = $y * $x;
+                $intermediate = (($temp % 3) + (($y + $x) & 0x1)) & 0x1;
+                break;
+
+            default:
+                throw new InvalidArgumentException('Invalid mask pattern: ' . $maskPattern);
+        }
+
+        return 0 == $intermediate;
+    }
+
+    /**
+     * Helper function for applyMaskPenaltyRule1.
+     *
+     * We need this for doing this calculation in both vertical and horizontal
+     * orders respectively.
+     */
+    private static function applyMaskPenaltyRule1Internal(ByteMatrix $matrix, bool $isHorizontal) : int
+    {
+        $penalty = 0;
+        $iLimit = $isHorizontal ? $matrix->getHeight() : $matrix->getWidth();
+        $jLimit = $isHorizontal ? $matrix->getWidth() : $matrix->getHeight();
+        $array = $matrix->getArray();
+
+        for ($i = 0; $i < $iLimit; ++$i) {
+            $numSameBitCells = 0;
+            $prevBit = -1;
+
+            for ($j = 0; $j < $jLimit; $j++) {
+                $bit = $isHorizontal ? $array[$i][$j] : $array[$j][$i];
+
+                if ($bit === $prevBit) {
+                    ++$numSameBitCells;
+                } else {
+                    if ($numSameBitCells >= 5) {
+                        $penalty += self::N1 + ($numSameBitCells - 5);
+                    }
+
+                    $numSameBitCells = 1;
+                    $prevBit = $bit;
+                }
+            }
+
+            if ($numSameBitCells >= 5) {
+                $penalty += self::N1 + ($numSameBitCells - 5);
+            }
+        }
+
+        return $penalty;
+    }
+}

vendor/bacon/bacon-qr-code/src/Encoder/MatrixUtil.php

@@ -0,0 +1,513 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Encoder;
+
+use BaconQrCode\Common\BitArray;
+use BaconQrCode\Common\ErrorCorrectionLevel;
+use BaconQrCode\Common\Version;
+use BaconQrCode\Exception\RuntimeException;
+use BaconQrCode\Exception\WriterException;
+
+/**
+ * Matrix utility.
+ */
+final class MatrixUtil
+{
+    /**
+     * Position detection pattern.
+     */
+    private const POSITION_DETECTION_PATTERN = [
+        [1, 1, 1, 1, 1, 1, 1],
+        [1, 0, 0, 0, 0, 0, 1],
+        [1, 0, 1, 1, 1, 0, 1],
+        [1, 0, 1, 1, 1, 0, 1],
+        [1, 0, 1, 1, 1, 0, 1],
+        [1, 0, 0, 0, 0, 0, 1],
+        [1, 1, 1, 1, 1, 1, 1],
+    ];
+
+    /**
+     * Position adjustment pattern.
+     */
+    private const POSITION_ADJUSTMENT_PATTERN = [
+        [1, 1, 1, 1, 1],
+        [1, 0, 0, 0, 1],
+        [1, 0, 1, 0, 1],
+        [1, 0, 0, 0, 1],
+        [1, 1, 1, 1, 1],
+    ];
+
+    /**
+     * Coordinates for position adjustment patterns for each version.
+     */
+    private const POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE = [
+        [null, null, null, null, null, null, null], // Version 1
+        [   6,   18, null, null, null, null, null], // Version 2
+        [   6,   22, null, null, null, null, null], // Version 3
+        [   6,   26, null, null, null, null, null], // Version 4
+        [   6,   30, null, null, null, null, null], // Version 5
+        [   6,   34, null, null, null, null, null], // Version 6
+        [   6,   22,   38, null, null, null, null], // Version 7
+        [   6,   24,   42, null, null, null, null], // Version 8
+        [   6,   26,   46, null, null, null, null], // Version 9
+        [   6,   28,   50, null, null, null, null], // Version 10
+        [   6,   30,   54, null, null, null, null], // Version 11
+        [   6,   32,   58, null, null, null, null], // Version 12
+        [   6,   34,   62, null, null, null, null], // Version 13
+        [   6,   26,   46,   66, null, null, null], // Version 14
+        [   6,   26,   48,   70, null, null, null], // Version 15
+        [   6,   26,   50,   74, null, null, null], // Version 16
+        [   6,   30,   54,   78, null, null, null], // Version 17
+        [   6,   30,   56,   82, null, null, null], // Version 18
+        [   6,   30,   58,   86, null, null, null], // Version 19
+        [   6,   34,   62,   90, null, null, null], // Version 20
+        [   6,   28,   50,   72,   94, null, null], // Version 21
+        [   6,   26,   50,   74,   98, null, null], // Version 22
+        [   6,   30,   54,   78,  102, null, null], // Version 23
+        [   6,   28,   54,   80,  106, null, null], // Version 24
+        [   6,   32,   58,   84,  110, null, null], // Version 25
+        [   6,   30,   58,   86,  114, null, null], // Version 26
+        [   6,   34,   62,   90,  118, null, null], // Version 27
+        [   6,   26,   50,   74,   98,  122, null], // Version 28
+        [   6,   30,   54,   78,  102,  126, null], // Version 29
+        [   6,   26,   52,   78,  104,  130, null], // Version 30
+        [   6,   30,   56,   82,  108,  134, null], // Version 31
+        [   6,   34,   60,   86,  112,  138, null], // Version 32
+        [   6,   30,   58,   86,  114,  142, null], // Version 33
+        [   6,   34,   62,   90,  118,  146, null], // Version 34
+        [   6,   30,   54,   78,  102,  126,  150], // Version 35
+        [   6,   24,   50,   76,  102,  128,  154], // Version 36
+        [   6,   28,   54,   80,  106,  132,  158], // Version 37
+        [   6,   32,   58,   84,  110,  136,  162], // Version 38
+        [   6,   26,   54,   82,  110,  138,  166], // Version 39
+        [   6,   30,   58,   86,  114,  142,  170], // Version 40
+    ];
+
+    /**
+     * Type information coordinates.
+     */
+    private const TYPE_INFO_COORDINATES = [
+        [8, 0],
+        [8, 1],
+        [8, 2],
+        [8, 3],
+        [8, 4],
+        [8, 5],
+        [8, 7],
+        [8, 8],
+        [7, 8],
+        [5, 8],
+        [4, 8],
+        [3, 8],
+        [2, 8],
+        [1, 8],
+        [0, 8],
+    ];
+
+    /**
+     * Version information polynomial.
+     */
+    private const VERSION_INFO_POLY = 0x1f25;
+
+    /**
+     * Type information polynomial.
+     */
+    private const TYPE_INFO_POLY = 0x537;
+
+    /**
+     * Type information mask pattern.
+     */
+    private const TYPE_INFO_MASK_PATTERN = 0x5412;
+
+    /**
+     * Clears a given matrix.
+     */
+    public static function clearMatrix(ByteMatrix $matrix) : void
+    {
+        $matrix->clear(-1);
+    }
+
+    /**
+     * Builds a complete matrix.
+     */
+    public static function buildMatrix(
+        BitArray $dataBits,
+        ErrorCorrectionLevel $level,
+        Version $version,
+        int $maskPattern,
+        ByteMatrix $matrix
+    ) : void {
+        self::clearMatrix($matrix);
+        self::embedBasicPatterns($version, $matrix);
+        self::embedTypeInfo($level, $maskPattern, $matrix);
+        self::maybeEmbedVersionInfo($version, $matrix);
+        self::embedDataBits($dataBits, $maskPattern, $matrix);
+    }
+
+    /**
+     * Removes the position detection patterns from a matrix.
+     *
+     * This can be useful if you need to render those patterns separately.
+     */
+    public static function removePositionDetectionPatterns(ByteMatrix $matrix) : void
+    {
+        $pdpWidth = count(self::POSITION_DETECTION_PATTERN[0]);
+
+        self::removePositionDetectionPattern(0, 0, $matrix);
+        self::removePositionDetectionPattern($matrix->getWidth() - $pdpWidth, 0, $matrix);
+        self::removePositionDetectionPattern(0, $matrix->getWidth() - $pdpWidth, $matrix);
+    }
+
+    /**
+     * Embeds type information into a matrix.
+     */
+    private static function embedTypeInfo(ErrorCorrectionLevel $level, int $maskPattern, ByteMatrix $matrix) : void
+    {
+        $typeInfoBits = new BitArray();
+        self::makeTypeInfoBits($level, $maskPattern, $typeInfoBits);
+
+        $typeInfoBitsSize = $typeInfoBits->getSize();
+
+        for ($i = 0; $i < $typeInfoBitsSize; ++$i) {
+            $bit = $typeInfoBits->get($typeInfoBitsSize - 1 - $i);
+
+            $x1 = self::TYPE_INFO_COORDINATES[$i][0];
+            $y1 = self::TYPE_INFO_COORDINATES[$i][1];
+
+            $matrix->set($x1, $y1, (int) $bit);
+
+            if ($i < 8) {
+                $x2 = $matrix->getWidth() - $i - 1;
+                $y2 = 8;
+            } else {
+                $x2 = 8;
+                $y2 = $matrix->getHeight() - 7 + ($i - 8);
+            }
+
+            $matrix->set($x2, $y2, (int) $bit);
+        }
+    }
+
+    /**
+     * Generates type information bits and appends them to a bit array.
+     *
+     * @throws RuntimeException if bit array resulted in invalid size
+     */
+    private static function makeTypeInfoBits(ErrorCorrectionLevel $level, int $maskPattern, BitArray $bits) : void
+    {
+        $typeInfo = ($level->getBits() << 3) | $maskPattern;
+        $bits->appendBits($typeInfo, 5);
+
+        $bchCode = self::calculateBchCode($typeInfo, self::TYPE_INFO_POLY);
+        $bits->appendBits($bchCode, 10);
+
+        $maskBits = new BitArray();
+        $maskBits->appendBits(self::TYPE_INFO_MASK_PATTERN, 15);
+        $bits->xorBits($maskBits);
+
+        if (15 !== $bits->getSize()) {
+            throw new RuntimeException('Bit array resulted in invalid size: ' . $bits->getSize());
+        }
+    }
+
+    /**
+     * Embeds version information if required.
+     */
+    private static function maybeEmbedVersionInfo(Version $version, ByteMatrix $matrix) : void
+    {
+        if ($version->getVersionNumber() < 7) {
+            return;
+        }
+
+        $versionInfoBits = new BitArray();
+        self::makeVersionInfoBits($version, $versionInfoBits);
+
+        $bitIndex = 6 * 3 - 1;
+
+        for ($i = 0; $i < 6; ++$i) {
+            for ($j = 0; $j < 3; ++$j) {
+                $bit = $versionInfoBits->get($bitIndex);
+                --$bitIndex;
+
+                $matrix->set($i, $matrix->getHeight() - 11 + $j, (int) $bit);
+                $matrix->set($matrix->getHeight() - 11 + $j, $i, (int) $bit);
+            }
+        }
+    }
+
+    /**
+     * Generates version information bits and appends them to a bit array.
+     *
+     * @throws RuntimeException if bit array resulted in invalid size
+     */
+    private static function makeVersionInfoBits(Version $version, BitArray $bits) : void
+    {
+        $bits->appendBits($version->getVersionNumber(), 6);
+
+        $bchCode = self::calculateBchCode($version->getVersionNumber(), self::VERSION_INFO_POLY);
+        $bits->appendBits($bchCode, 12);
+
+        if (18 !== $bits->getSize()) {
+            throw new RuntimeException('Bit array resulted in invalid size: ' . $bits->getSize());
+        }
+    }
+
+    /**
+     * Calculates the BCH code for a value and a polynomial.
+     */
+    private static function calculateBchCode(int $value, int $poly) : int
+    {
+        $msbSetInPoly = self::findMsbSet($poly);
+        $value <<= $msbSetInPoly - 1;
+
+        while (self::findMsbSet($value) >= $msbSetInPoly) {
+            $value ^= $poly << (self::findMsbSet($value) - $msbSetInPoly);
+        }
+
+        return $value;
+    }
+
+    /**
+     * Finds and MSB set.
+     */
+    private static function findMsbSet(int $value) : int
+    {
+        $numDigits = 0;
+
+        while (0 !== $value) {
+            $value >>= 1;
+            ++$numDigits;
+        }
+
+        return $numDigits;
+    }
+
+    /**
+     * Embeds basic patterns into a matrix.
+     */
+    private static function embedBasicPatterns(Version $version, ByteMatrix $matrix) : void
+    {
+        self::embedPositionDetectionPatternsAndSeparators($matrix);
+        self::embedDarkDotAtLeftBottomCorner($matrix);
+        self::maybeEmbedPositionAdjustmentPatterns($version, $matrix);
+        self::embedTimingPatterns($matrix);
+    }
+
+    /**
+     * Embeds position detection patterns and separators into a byte matrix.
+     */
+    private static function embedPositionDetectionPatternsAndSeparators(ByteMatrix $matrix) : void
+    {
+        $pdpWidth = count(self::POSITION_DETECTION_PATTERN[0]);
+
+        self::embedPositionDetectionPattern(0, 0, $matrix);
+        self::embedPositionDetectionPattern($matrix->getWidth() - $pdpWidth, 0, $matrix);
+        self::embedPositionDetectionPattern(0, $matrix->getWidth() - $pdpWidth, $matrix);
+
+        $hspWidth = 8;
+
+        self::embedHorizontalSeparationPattern(0, $hspWidth - 1, $matrix);
+        self::embedHorizontalSeparationPattern($matrix->getWidth() - $hspWidth, $hspWidth - 1, $matrix);
+        self::embedHorizontalSeparationPattern(0, $matrix->getWidth() - $hspWidth, $matrix);
+
+        $vspSize = 7;
+
+        self::embedVerticalSeparationPattern($vspSize, 0, $matrix);
+        self::embedVerticalSeparationPattern($matrix->getHeight() - $vspSize - 1, 0, $matrix);
+        self::embedVerticalSeparationPattern($vspSize, $matrix->getHeight() - $vspSize, $matrix);
+    }
+
+    /**
+     * Embeds a single position detection pattern into a byte matrix.
+     */
+    private static function embedPositionDetectionPattern(int $xStart, int $yStart, ByteMatrix $matrix) : void
+    {
+        for ($y = 0; $y < 7; ++$y) {
+            for ($x = 0; $x < 7; ++$x) {
+                $matrix->set($xStart + $x, $yStart + $y, self::POSITION_DETECTION_PATTERN[$y][$x]);
+            }
+        }
+    }
+
+    private static function removePositionDetectionPattern(int $xStart, int $yStart, ByteMatrix $matrix) : void
+    {
+        for ($y = 0; $y < 7; ++$y) {
+            for ($x = 0; $x < 7; ++$x) {
+                $matrix->set($xStart + $x, $yStart + $y, 0);
+            }
+        }
+    }
+
+    /**
+     * Embeds a single horizontal separation pattern.
+     *
+     * @throws RuntimeException if a byte was already set
+     */
+    private static function embedHorizontalSeparationPattern(int $xStart, int $yStart, ByteMatrix $matrix) : void
+    {
+        for ($x = 0; $x < 8; $x++) {
+            if (-1 !== $matrix->get($xStart + $x, $yStart)) {
+                throw new RuntimeException('Byte already set');
+            }
+
+            $matrix->set($xStart + $x, $yStart, 0);
+        }
+    }
+
+    /**
+     * Embeds a single vertical separation pattern.
+     *
+     * @throws RuntimeException if a byte was already set
+     */
+    private static function embedVerticalSeparationPattern(int $xStart, int $yStart, ByteMatrix $matrix) : void
+    {
+        for ($y = 0; $y < 7; $y++) {
+            if (-1 !== $matrix->get($xStart, $yStart + $y)) {
+                throw new RuntimeException('Byte already set');
+            }
+
+            $matrix->set($xStart, $yStart + $y, 0);
+        }
+    }
+
+    /**
+     * Embeds a dot at the left bottom corner.
+     *
+     * @throws RuntimeException if a byte was already set to 0
+     */
+    private static function embedDarkDotAtLeftBottomCorner(ByteMatrix $matrix) : void
+    {
+        if (0 === $matrix->get(8, $matrix->getHeight() - 8)) {
+            throw new RuntimeException('Byte already set to 0');
+        }
+
+        $matrix->set(8, $matrix->getHeight() - 8, 1);
+    }
+
+    /**
+     * Embeds position adjustment patterns if required.
+     */
+    private static function maybeEmbedPositionAdjustmentPatterns(Version $version, ByteMatrix $matrix) : void
+    {
+        if ($version->getVersionNumber() < 2) {
+            return;
+        }
+
+        $index = $version->getVersionNumber() - 1;
+
+        $coordinates = self::POSITION_ADJUSTMENT_PATTERN_COORDINATE_TABLE[$index];
+        $numCoordinates = count($coordinates);
+
+        for ($i = 0; $i < $numCoordinates; ++$i) {
+            for ($j = 0; $j < $numCoordinates; ++$j) {
+                $y = $coordinates[$i];
+                $x = $coordinates[$j];
+
+                if (null === $x || null === $y) {
+                    continue;
+                }
+
+                if (-1 === $matrix->get($x, $y)) {
+                    self::embedPositionAdjustmentPattern($x - 2, $y - 2, $matrix);
+                }
+            }
+        }
+    }
+
+    /**
+     * Embeds a single position adjustment pattern.
+     */
+    private static function embedPositionAdjustmentPattern(int $xStart, int $yStart, ByteMatrix $matrix) : void
+    {
+        for ($y = 0; $y < 5; $y++) {
+            for ($x = 0; $x < 5; $x++) {
+                $matrix->set($xStart + $x, $yStart + $y, self::POSITION_ADJUSTMENT_PATTERN[$y][$x]);
+            }
+        }
+    }
+
+    /**
+     * Embeds timing patterns into a matrix.
+     */
+    private static function embedTimingPatterns(ByteMatrix $matrix) : void
+    {
+        $matrixWidth = $matrix->getWidth();
+
+        for ($i = 8; $i < $matrixWidth - 8; ++$i) {
+            $bit = ($i + 1) % 2;
+
+            if (-1 === $matrix->get($i, 6)) {
+                $matrix->set($i, 6, $bit);
+            }
+
+            if (-1 === $matrix->get(6, $i)) {
+                $matrix->set(6, $i, $bit);
+            }
+        }
+    }
+
+    /**
+     * Embeds "dataBits" using "getMaskPattern".
+     *
+     * For debugging purposes, it skips masking process if "getMaskPattern" is -1. See 8.7 of JISX0510:2004 (p.38) for
+     * how to embed data bits.
+     *
+     * @throws WriterException if not all bits could be consumed
+     */
+    private static function embedDataBits(BitArray $dataBits, int $maskPattern, ByteMatrix $matrix) : void
+    {
+        $bitIndex = 0;
+        $direction = -1;
+
+        // Start from the right bottom cell.
+        $x = $matrix->getWidth() - 1;
+        $y = $matrix->getHeight() - 1;
+
+        while ($x > 0) {
+            // Skip vertical timing pattern.
+            if (6 === $x) {
+                --$x;
+            }
+
+            while ($y >= 0 && $y < $matrix->getHeight()) {
+                for ($i = 0; $i < 2; $i++) {
+                    $xx = $x - $i;
+
+                    // Skip the cell if it's not empty.
+                    if (-1 !== $matrix->get($xx, $y)) {
+                        continue;
+                    }
+
+                    if ($bitIndex < $dataBits->getSize()) {
+                        $bit = $dataBits->get($bitIndex);
+                        ++$bitIndex;
+                    } else {
+                        // Padding bit. If there is no bit left, we'll fill the
+                        // left cells with 0, as described in 8.4.9 of
+                        // JISX0510:2004 (p. 24).
+                        $bit = false;
+                    }
+
+                    // Skip masking if maskPattern is -1.
+                    if (-1 !== $maskPattern && MaskUtil::getDataMaskBit($maskPattern, $xx, $y)) {
+                        $bit = ! $bit;
+                    }
+
+                    $matrix->set($xx, $y, (int) $bit);
+                }
+
+                $y += $direction;
+            }
+
+            $direction  = -$direction;
+            $y += $direction;
+            $x -= 2;
+        }
+
+        // All bits should be consumed
+        if ($dataBits->getSize() !== $bitIndex) {
+            throw new WriterException('Not all bits consumed (' . $bitIndex . ' out of ' . $dataBits->getSize() .')');
+        }
+    }
+}

vendor/bacon/bacon-qr-code/src/Encoder/QrCode.php

@@ -0,0 +1,141 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Encoder;
+
+use BaconQrCode\Common\ErrorCorrectionLevel;
+use BaconQrCode\Common\Mode;
+use BaconQrCode\Common\Version;
+
+/**
+ * QR code.
+ */
+final class QrCode
+{
+    /**
+     * Number of possible mask patterns.
+     */
+    public const NUM_MASK_PATTERNS = 8;
+
+    /**
+     * Mode of the QR code.
+     *
+     * @var Mode
+     */
+    private $mode;
+
+    /**
+     * EC level of the QR code.
+     *
+     * @var ErrorCorrectionLevel
+     */
+    private $errorCorrectionLevel;
+
+    /**
+     * Version of the QR code.
+     *
+     * @var Version
+     */
+    private $version;
+
+    /**
+     * Mask pattern of the QR code.
+     *
+     * @var int
+     */
+    private $maskPattern = -1;
+
+    /**
+     * Matrix of the QR code.
+     *
+     * @var ByteMatrix
+     */
+    private $matrix;
+
+    public function __construct(
+        Mode $mode,
+        ErrorCorrectionLevel $errorCorrectionLevel,
+        Version $version,
+        int $maskPattern,
+        ByteMatrix $matrix
+    ) {
+        $this->mode = $mode;
+        $this->errorCorrectionLevel = $errorCorrectionLevel;
+        $this->version = $version;
+        $this->maskPattern = $maskPattern;
+        $this->matrix = $matrix;
+    }
+
+    /**
+     * Gets the mode.
+     */
+    public function getMode() : Mode
+    {
+        return $this->mode;
+    }
+
+    /**
+     * Gets the EC level.
+     */
+    public function getErrorCorrectionLevel() : ErrorCorrectionLevel
+    {
+        return $this->errorCorrectionLevel;
+    }
+
+    /**
+     * Gets the version.
+     */
+    public function getVersion() : Version
+    {
+        return $this->version;
+    }
+
+    /**
+     * Gets the mask pattern.
+     */
+    public function getMaskPattern() : int
+    {
+        return $this->maskPattern;
+    }
+
+    /**
+     * Gets the matrix.
+     *
+     * @return ByteMatrix
+     */
+    public function getMatrix()
+    {
+        return $this->matrix;
+    }
+
+    /**
+     * Validates whether a mask pattern is valid.
+     */
+    public static function isValidMaskPattern(int $maskPattern) : bool
+    {
+        return $maskPattern > 0 && $maskPattern < self::NUM_MASK_PATTERNS;
+    }
+
+    /**
+     * Returns a string representation of the QR code.
+     */
+    public function __toString() : string
+    {
+        $result = "<<\n"
+                . ' mode: ' . $this->mode . "\n"
+                . ' ecLevel: ' . $this->errorCorrectionLevel . "\n"
+                . ' version: ' . $this->version . "\n"
+                . ' maskPattern: ' . $this->maskPattern . "\n";
+
+        if ($this->matrix === null) {
+            $result .= " matrix: null\n";
+        } else {
+            $result .= " matrix:\n";
+            $result .= $this->matrix;
+        }
+
+        $result .= ">>\n";
+
+        return $result;
+    }
+}

vendor/bacon/bacon-qr-code/src/Exception/ExceptionInterface.php

@@ -0,0 +1,10 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Exception;
+
+use Throwable;
+
+interface ExceptionInterface extends Throwable
+{
+}

vendor/bacon/bacon-qr-code/src/Exception/InvalidArgumentException.php

@@ -0,0 +1,8 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Exception;
+
+final class InvalidArgumentException extends \InvalidArgumentException implements ExceptionInterface
+{
+}

vendor/bacon/bacon-qr-code/src/Exception/OutOfBoundsException.php

@@ -0,0 +1,8 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Exception;
+
+final class OutOfBoundsException extends \OutOfBoundsException implements ExceptionInterface
+{
+}

vendor/bacon/bacon-qr-code/src/Exception/RuntimeException.php

@@ -0,0 +1,8 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Exception;
+
+final class RuntimeException extends \RuntimeException implements ExceptionInterface
+{
+}

vendor/bacon/bacon-qr-code/src/Exception/UnexpectedValueException.php

@@ -0,0 +1,8 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Exception;
+
+final class UnexpectedValueException extends \UnexpectedValueException implements ExceptionInterface
+{
+}

vendor/bacon/bacon-qr-code/src/Exception/WriterException.php

@@ -0,0 +1,8 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Exception;
+
+final class WriterException extends \RuntimeException implements ExceptionInterface
+{
+}

vendor/bacon/bacon-qr-code/src/Renderer/Color/Alpha.php

@@ -0,0 +1,57 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Color;
+
+use BaconQrCode\Exception;
+
+final class Alpha implements ColorInterface
+{
+    /**
+     * @var int
+     */
+    private $alpha;
+
+    /**
+     * @var ColorInterface
+     */
+    private $baseColor;
+
+    /**
+     * @param int $alpha the alpha value, 0 to 100
+     */
+    public function __construct(int $alpha, ColorInterface $baseColor)
+    {
+        if ($alpha < 0 || $alpha > 100) {
+            throw new Exception\InvalidArgumentException('Alpha must be between 0 and 100');
+        }
+
+        $this->alpha = $alpha;
+        $this->baseColor = $baseColor;
+    }
+
+    public function getAlpha() : int
+    {
+        return $this->alpha;
+    }
+
+    public function getBaseColor() : ColorInterface
+    {
+        return $this->baseColor;
+    }
+
+    public function toRgb() : Rgb
+    {
+        return $this->baseColor->toRgb();
+    }
+
+    public function toCmyk() : Cmyk
+    {
+        return $this->baseColor->toCmyk();
+    }
+
+    public function toGray() : Gray
+    {
+        return $this->baseColor->toGray();
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Color/Cmyk.php

@@ -0,0 +1,103 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Color;
+
+use BaconQrCode\Exception;
+
+final class Cmyk implements ColorInterface
+{
+    /**
+     * @var int
+     */
+    private $cyan;
+
+    /**
+     * @var int
+     */
+    private $magenta;
+
+    /**
+     * @var int
+     */
+    private $yellow;
+
+    /**
+     * @var int
+     */
+    private $black;
+
+    /**
+     * @param int $cyan the cyan amount, 0 to 100
+     * @param int $magenta the magenta amount, 0 to 100
+     * @param int $yellow the yellow amount, 0 to 100
+     * @param int $black the black amount, 0 to 100
+     */
+    public function __construct(int $cyan, int $magenta, int $yellow, int $black)
+    {
+        if ($cyan < 0 || $cyan > 100) {
+            throw new Exception\InvalidArgumentException('Cyan must be between 0 and 100');
+        }
+
+        if ($magenta < 0 || $magenta > 100) {
+            throw new Exception\InvalidArgumentException('Magenta must be between 0 and 100');
+        }
+
+        if ($yellow < 0 || $yellow > 100) {
+            throw new Exception\InvalidArgumentException('Yellow must be between 0 and 100');
+        }
+
+        if ($black < 0 || $black > 100) {
+            throw new Exception\InvalidArgumentException('Black must be between 0 and 100');
+        }
+
+        $this->cyan = $cyan;
+        $this->magenta = $magenta;
+        $this->yellow = $yellow;
+        $this->black = $black;
+    }
+
+    public function getCyan() : int
+    {
+        return $this->cyan;
+    }
+
+    public function getMagenta() : int
+    {
+        return $this->magenta;
+    }
+
+    public function getYellow() : int
+    {
+        return $this->yellow;
+    }
+
+    public function getBlack() : int
+    {
+        return $this->black;
+    }
+
+    public function toRgb() : Rgb
+    {
+        $k = $this->black / 100;
+        $c = (-$k * $this->cyan + $k * 100 + $this->cyan) / 100;
+        $m = (-$k * $this->magenta + $k * 100 + $this->magenta) / 100;
+        $y = (-$k * $this->yellow + $k * 100 + $this->yellow) / 100;
+
+        return new Rgb(
+            (int) (-$c * 255 + 255),
+            (int) (-$m * 255 + 255),
+            (int) (-$y * 255 + 255)
+        );
+    }
+
+    public function toCmyk() : Cmyk
+    {
+        return $this;
+    }
+
+    public function toGray() : Gray
+    {
+        return $this->toRgb()->toGray();
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Color/ColorInterface.php

@@ -0,0 +1,22 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Color;
+
+interface ColorInterface
+{
+    /**
+     * Converts the color to RGB.
+     */
+    public function toRgb() : Rgb;
+
+    /**
+     * Converts the color to CMYK.
+     */
+    public function toCmyk() : Cmyk;
+
+    /**
+     * Converts the color to gray.
+     */
+    public function toGray() : Gray;
+}

vendor/bacon/bacon-qr-code/src/Renderer/Color/Gray.php

@@ -0,0 +1,46 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Color;
+
+use BaconQrCode\Exception;
+
+final class Gray implements ColorInterface
+{
+    /**
+     * @var int
+     */
+    private $gray;
+
+    /**
+     * @param int $gray the gray value between 0 (black) and 100 (white)
+     */
+    public function __construct(int $gray)
+    {
+        if ($gray < 0 || $gray > 100) {
+            throw new Exception\InvalidArgumentException('Gray must be between 0 and 100');
+        }
+
+        $this->gray = (int) $gray;
+    }
+
+    public function getGray() : int
+    {
+        return $this->gray;
+    }
+
+    public function toRgb() : Rgb
+    {
+        return new Rgb((int) ($this->gray * 2.55), (int) ($this->gray * 2.55), (int) ($this->gray * 2.55));
+    }
+
+    public function toCmyk() : Cmyk
+    {
+        return new Cmyk(0, 0, 0, 100 - $this->gray);
+    }
+
+    public function toGray() : Gray
+    {
+        return $this;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Color/Rgb.php

@@ -0,0 +1,88 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Color;
+
+use BaconQrCode\Exception;
+
+final class Rgb implements ColorInterface
+{
+    /**
+     * @var int
+     */
+    private $red;
+
+    /**
+     * @var int
+     */
+    private $green;
+
+    /**
+     * @var int
+     */
+    private $blue;
+
+    /**
+     * @param int $red the red amount of the color, 0 to 255
+     * @param int $green the green amount of the color, 0 to 255
+     * @param int $blue the blue amount of the color, 0 to 255
+     */
+    public function __construct(int $red, int $green, int $blue)
+    {
+        if ($red < 0 || $red > 255) {
+            throw new Exception\InvalidArgumentException('Red must be between 0 and 255');
+        }
+
+        if ($green < 0 || $green > 255) {
+            throw new Exception\InvalidArgumentException('Green must be between 0 and 255');
+        }
+
+        if ($blue < 0 || $blue > 255) {
+            throw new Exception\InvalidArgumentException('Blue must be between 0 and 255');
+        }
+
+        $this->red = $red;
+        $this->green = $green;
+        $this->blue = $blue;
+    }
+
+    public function getRed() : int
+    {
+        return $this->red;
+    }
+
+    public function getGreen() : int
+    {
+        return $this->green;
+    }
+
+    public function getBlue() : int
+    {
+        return $this->blue;
+    }
+
+    public function toRgb() : Rgb
+    {
+        return $this;
+    }
+
+    public function toCmyk() : Cmyk
+    {
+        $c = 1 - ($this->red / 255);
+        $m = 1 - ($this->green / 255);
+        $y = 1 - ($this->blue / 255);
+        $k = min($c, $m, $y);
+
+        return new Cmyk(
+            (int) (100 * ($c - $k) / (1 - $k)),
+            (int) (100 * ($m - $k) / (1 - $k)),
+            (int) (100 * ($y - $k) / (1 - $k)),
+            (int) (100 * $k)
+        );
+    }
+
+    public function toGray() : Gray
+    {
+        return new Gray((int) (($this->red * 0.21 + $this->green * 0.71 + $this->blue * 0.07) / 2.55));
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Eye/CompositeEye.php

@@ -0,0 +1,38 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Eye;
+
+use BaconQrCode\Renderer\Path\Path;
+
+/**
+ * Combines the style of two different eyes.
+ */
+final class CompositeEye implements EyeInterface
+{
+    /**
+     * @var EyeInterface
+     */
+    private $externalEye;
+
+    /**
+     * @var EyeInterface
+     */
+    private $internalEye;
+
+    public function __construct(EyeInterface $externalEye, EyeInterface $internalEye)
+    {
+        $this->externalEye = $externalEye;
+        $this->internalEye = $internalEye;
+    }
+
+    public function getExternalPath() : Path
+    {
+        return $this->externalEye->getExternalPath();
+    }
+
+    public function getInternalPath() : Path
+    {
+        return $this->externalEye->getInternalPath();
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Eye/EyeInterface.php

@@ -0,0 +1,26 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Eye;
+
+use BaconQrCode\Renderer\Path\Path;
+
+/**
+ * Interface for describing the look of an eye.
+ */
+interface EyeInterface
+{
+    /**
+     * Returns the path of the external eye element.
+     *
+     * The path origin point (0, 0) must be anchored at the middle of the path.
+     */
+    public function getExternalPath() : Path;
+
+    /**
+     * Returns the path of the internal eye element.
+     *
+     * The path origin point (0, 0) must be anchored at the middle of the path.
+     */
+    public function getInternalPath() : Path;
+}

vendor/bacon/bacon-qr-code/src/Renderer/Eye/ModuleEye.php

@@ -0,0 +1,54 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Eye;
+
+use BaconQrCode\Encoder\ByteMatrix;
+use BaconQrCode\Renderer\Module\ModuleInterface;
+use BaconQrCode\Renderer\Path\Path;
+
+/**
+ * Renders an eye based on a module renderer.
+ */
+final class ModuleEye implements EyeInterface
+{
+    /**
+     * @var ModuleInterface
+     */
+    private $module;
+
+    public function __construct(ModuleInterface $module)
+    {
+        $this->module = $module;
+    }
+
+    public function getExternalPath() : Path
+    {
+        $matrix = new ByteMatrix(7, 7);
+
+        for ($x = 0; $x < 7; ++$x) {
+            $matrix->set($x, 0, 1);
+            $matrix->set($x, 6, 1);
+        }
+
+        for ($y = 1; $y < 6; ++$y) {
+            $matrix->set(0, $y, 1);
+            $matrix->set(6, $y, 1);
+        }
+
+        return $this->module->createPath($matrix)->translate(-3.5, -3.5);
+    }
+
+    public function getInternalPath() : Path
+    {
+        $matrix = new ByteMatrix(3, 3);
+
+        for ($x = 0; $x < 3; ++$x) {
+            for ($y = 0; $y < 3; ++$y) {
+                $matrix->set($x, $y, 1);
+            }
+        }
+
+        return $this->module->createPath($matrix)->translate(-1.5, -1.5);
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Eye/SimpleCircleEye.php

@@ -0,0 +1,54 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Eye;
+
+use BaconQrCode\Renderer\Path\Path;
+
+/**
+ * Renders the inner eye as a circle.
+ */
+final class SimpleCircleEye implements EyeInterface
+{
+    /**
+     * @var self|null
+     */
+    private static $instance;
+
+    private function __construct()
+    {
+    }
+
+    public static function instance() : self
+    {
+        return self::$instance ?: self::$instance = new self();
+    }
+
+    public function getExternalPath() : Path
+    {
+        return (new Path())
+            ->move(-3.5, -3.5)
+            ->line(3.5, -3.5)
+            ->line(3.5, 3.5)
+            ->line(-3.5, 3.5)
+            ->close()
+            ->move(-2.5, -2.5)
+            ->line(-2.5, 2.5)
+            ->line(2.5, 2.5)
+            ->line(2.5, -2.5)
+            ->close()
+        ;
+    }
+
+    public function getInternalPath() : Path
+    {
+        return (new Path())
+            ->move(1.5, 0)
+            ->ellipticArc(1.5, 1.5, 0., false, true, 0., 1.5)
+            ->ellipticArc(1.5, 1.5, 0., false, true, -1.5, 0.)
+            ->ellipticArc(1.5, 1.5, 0., false, true, 0., -1.5)
+            ->ellipticArc(1.5, 1.5, 0., false, true, 1.5, 0.)
+            ->close()
+        ;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Eye/SquareEye.php

@@ -0,0 +1,53 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Eye;
+
+use BaconQrCode\Renderer\Path\Path;
+
+/**
+ * Renders the eyes in their default square shape.
+ */
+final class SquareEye implements EyeInterface
+{
+    /**
+     * @var self|null
+     */
+    private static $instance;
+
+    private function __construct()
+    {
+    }
+
+    public static function instance() : self
+    {
+        return self::$instance ?: self::$instance = new self();
+    }
+
+    public function getExternalPath() : Path
+    {
+        return (new Path())
+            ->move(-3.5, -3.5)
+            ->line(3.5, -3.5)
+            ->line(3.5, 3.5)
+            ->line(-3.5, 3.5)
+            ->close()
+            ->move(-2.5, -2.5)
+            ->line(-2.5, 2.5)
+            ->line(2.5, 2.5)
+            ->line(2.5, -2.5)
+            ->close()
+        ;
+    }
+
+    public function getInternalPath() : Path
+    {
+        return (new Path())
+            ->move(-1.5, -1.5)
+            ->line(1.5, -1.5)
+            ->line(1.5, 1.5)
+            ->line(-1.5, 1.5)
+            ->close()
+        ;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Image/EpsImageBackEnd.php

@@ -0,0 +1,376 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Image;
+
+use BaconQrCode\Exception\RuntimeException;
+use BaconQrCode\Renderer\Color\Alpha;
+use BaconQrCode\Renderer\Color\Cmyk;
+use BaconQrCode\Renderer\Color\ColorInterface;
+use BaconQrCode\Renderer\Color\Gray;
+use BaconQrCode\Renderer\Color\Rgb;
+use BaconQrCode\Renderer\Path\Close;
+use BaconQrCode\Renderer\Path\Curve;
+use BaconQrCode\Renderer\Path\EllipticArc;
+use BaconQrCode\Renderer\Path\Line;
+use BaconQrCode\Renderer\Path\Move;
+use BaconQrCode\Renderer\Path\Path;
+use BaconQrCode\Renderer\RendererStyle\Gradient;
+use BaconQrCode\Renderer\RendererStyle\GradientType;
+
+final class EpsImageBackEnd implements ImageBackEndInterface
+{
+    private const PRECISION = 3;
+
+    /**
+     * @var string|null
+     */
+    private $eps;
+
+    public function new(int $size, ColorInterface $backgroundColor) : void
+    {
+        $this->eps = "%!PS-Adobe-3.0 EPSF-3.0\n"
+            . "%%Creator: BaconQrCode\n"
+            . sprintf("%%%%BoundingBox: 0 0 %d %d \n", $size, $size)
+            . "%%BeginProlog\n"
+            . "save\n"
+            . "50 dict begin\n"
+            . "/q { gsave } bind def\n"
+            . "/Q { grestore } bind def\n"
+            . "/s { scale } bind def\n"
+            . "/t { translate } bind def\n"
+            . "/r { rotate } bind def\n"
+            . "/n { newpath } bind def\n"
+            . "/m { moveto } bind def\n"
+            . "/l { lineto } bind def\n"
+            . "/c { curveto } bind def\n"
+            . "/z { closepath } bind def\n"
+            . "/f { eofill } bind def\n"
+            . "/rgb { setrgbcolor } bind def\n"
+            . "/cmyk { setcmykcolor } bind def\n"
+            . "/gray { setgray } bind def\n"
+            . "%%EndProlog\n"
+            . "1 -1 s\n"
+            . sprintf("0 -%d t\n", $size);
+
+        if ($backgroundColor instanceof Alpha && 0 === $backgroundColor->getAlpha()) {
+            return;
+        }
+
+        $this->eps .= wordwrap(
+            '0 0 m'
+            . sprintf(' %s 0 l', (string) $size)
+            . sprintf(' %s %s l', (string) $size, (string) $size)
+            . sprintf(' 0 %s l', (string) $size)
+            . ' z'
+            . ' ' .$this->getColorSetString($backgroundColor) . " f\n",
+            75,
+            "\n "
+        );
+    }
+
+    public function scale(float $size) : void
+    {
+        if (null === $this->eps) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->eps .= sprintf("%1\$s %1\$s s\n", round($size, self::PRECISION));
+    }
+
+    public function translate(float $x, float $y) : void
+    {
+        if (null === $this->eps) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->eps .= sprintf("%s %s t\n", round($x, self::PRECISION), round($y, self::PRECISION));
+    }
+
+    public function rotate(int $degrees) : void
+    {
+        if (null === $this->eps) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->eps .= sprintf("%d r\n", $degrees);
+    }
+
+    public function push() : void
+    {
+        if (null === $this->eps) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->eps .= "q\n";
+    }
+
+    public function pop() : void
+    {
+        if (null === $this->eps) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->eps .= "Q\n";
+    }
+
+    public function drawPathWithColor(Path $path, ColorInterface $color) : void
+    {
+        if (null === $this->eps) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $fromX = 0;
+        $fromY = 0;
+        $this->eps .= wordwrap(
+            'n '
+            . $this->drawPathOperations($path, $fromX, $fromY)
+            . ' ' . $this->getColorSetString($color) . " f\n",
+            75,
+            "\n "
+        );
+    }
+
+    public function drawPathWithGradient(
+        Path $path,
+        Gradient $gradient,
+        float $x,
+        float $y,
+        float $width,
+        float $height
+    ) : void {
+        if (null === $this->eps) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $fromX = 0;
+        $fromY = 0;
+        $this->eps .= wordwrap(
+            'q n ' . $this->drawPathOperations($path, $fromX, $fromY) . "\n",
+            75,
+            "\n "
+        );
+
+        $this->createGradientFill($gradient, $x, $y, $width, $height);
+    }
+
+    public function done() : string
+    {
+        if (null === $this->eps) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->eps .= "%%TRAILER\nend restore\n%%EOF";
+        $blob = $this->eps;
+        $this->eps = null;
+
+        return $blob;
+    }
+
+    private function drawPathOperations(Iterable $ops, &$fromX, &$fromY) : string
+    {
+        $pathData = [];
+
+        foreach ($ops as $op) {
+            switch (true) {
+                case $op instanceof Move:
+                    $fromX = $toX = round($op->getX(), self::PRECISION);
+                    $fromY = $toY = round($op->getY(), self::PRECISION);
+                    $pathData[] = sprintf('%s %s m', $toX, $toY);
+                    break;
+
+                case $op instanceof Line:
+                    $fromX = $toX = round($op->getX(), self::PRECISION);
+                    $fromY = $toY = round($op->getY(), self::PRECISION);
+                    $pathData[] = sprintf('%s %s l', $toX, $toY);
+                    break;
+
+                case $op instanceof EllipticArc:
+                    $pathData[] = $this->drawPathOperations($op->toCurves($fromX, $fromY), $fromX, $fromY);
+                    break;
+
+                case $op instanceof Curve:
+                    $x1 = round($op->getX1(), self::PRECISION);
+                    $y1 = round($op->getY1(), self::PRECISION);
+                    $x2 = round($op->getX2(), self::PRECISION);
+                    $y2 = round($op->getY2(), self::PRECISION);
+                    $fromX = $x3 = round($op->getX3(), self::PRECISION);
+                    $fromY = $y3 = round($op->getY3(), self::PRECISION);
+                    $pathData[] = sprintf('%s %s %s %s %s %s c', $x1, $y1, $x2, $y2, $x3, $y3);
+                    break;
+
+                case $op instanceof Close:
+                    $pathData[] = 'z';
+                    break;
+
+                default:
+                    throw new RuntimeException('Unexpected draw operation: ' . get_class($op));
+            }
+        }
+
+        return implode(' ', $pathData);
+    }
+
+    private function createGradientFill(Gradient $gradient, float $x, float $y, float $width, float $height) : void
+    {
+        $startColor = $gradient->getStartColor();
+        $endColor = $gradient->getEndColor();
+
+        if ($startColor instanceof Alpha) {
+            $startColor = $startColor->getBaseColor();
+        }
+
+        $startColorType = get_class($startColor);
+
+        if (! in_array($startColorType, [Rgb::class, Cmyk::class, Gray::class])) {
+            $startColorType = Cmyk::class;
+            $startColor = $startColor->toCmyk();
+        }
+
+        if (get_class($endColor) !== $startColorType) {
+            switch ($startColorType) {
+                case Cmyk::class:
+                    $endColor = $endColor->toCmyk();
+                    break;
+
+                case Rgb::class:
+                    $endColor = $endColor->toRgb();
+                    break;
+
+                case Gray::class:
+                    $endColor = $endColor->toGray();
+                    break;
+            }
+        }
+
+        $this->eps .= "eoclip\n<<\n";
+
+        if ($gradient->getType() === GradientType::RADIAL()) {
+            $this->eps .= " /ShadingType 3\n";
+        } else {
+            $this->eps .= " /ShadingType 2\n";
+        }
+
+        $this->eps .= " /Extend [ true true ]\n"
+            . " /AntiAlias true\n";
+
+        switch ($startColorType) {
+            case Cmyk::class:
+                $this->eps .= " /ColorSpace /DeviceCMYK\n";
+                break;
+
+            case Rgb::class:
+                $this->eps .= " /ColorSpace /DeviceRGB\n";
+                break;
+
+            case Gray::class:
+                $this->eps .= " /ColorSpace /DeviceGray\n";
+                break;
+        }
+
+        switch ($gradient->getType()) {
+            case GradientType::HORIZONTAL():
+                $this->eps .= sprintf(
+                    " /Coords [ %s %s %s %s ]\n",
+                    round($x, self::PRECISION),
+                    round($y, self::PRECISION),
+                    round($x + $width, self::PRECISION),
+                    round($y, self::PRECISION)
+                );
+                break;
+
+            case GradientType::VERTICAL():
+                $this->eps .= sprintf(
+                    " /Coords [ %s %s %s %s ]\n",
+                    round($x, self::PRECISION),
+                    round($y, self::PRECISION),
+                    round($x, self::PRECISION),
+                    round($y + $height, self::PRECISION)
+                );
+                break;
+
+            case GradientType::DIAGONAL():
+                $this->eps .= sprintf(
+                    " /Coords [ %s %s %s %s ]\n",
+                    round($x, self::PRECISION),
+                    round($y, self::PRECISION),
+                    round($x + $width, self::PRECISION),
+                    round($y + $height, self::PRECISION)
+                );
+                break;
+
+            case GradientType::INVERSE_DIAGONAL():
+                $this->eps .= sprintf(
+                    " /Coords [ %s %s %s %s ]\n",
+                    round($x, self::PRECISION),
+                    round($y + $height, self::PRECISION),
+                    round($x + $width, self::PRECISION),
+                    round($y, self::PRECISION)
+                );
+                break;
+
+            case GradientType::RADIAL():
+                $centerX = ($x + $width) / 2;
+                $centerY = ($y + $height) / 2;
+
+                $this->eps .= sprintf(
+                    " /Coords [ %s %s 0 %s %s %s ]\n",
+                    round($centerX, self::PRECISION),
+                    round($centerY, self::PRECISION),
+                    round($centerX, self::PRECISION),
+                    round($centerY, self::PRECISION),
+                    round(max($width, $height) / 2, self::PRECISION)
+                );
+                break;
+        }
+
+        $this->eps .= " /Function\n"
+            . " <<\n"
+            . "  /FunctionType 2\n"
+            . "  /Domain [ 0 1 ]\n"
+            . sprintf("  /C0 [ %s ]\n", $this->getColorString($startColor))
+            . sprintf("  /C1 [ %s ]\n", $this->getColorString($endColor))
+            . "  /N 1\n"
+            . " >>\n>>\nshfill\nQ\n";
+    }
+
+    private function getColorSetString(ColorInterface $color) : string
+    {
+        if ($color instanceof Rgb) {
+            return $this->getColorString($color) . ' rgb';
+        }
+
+        if ($color instanceof Cmyk) {
+            return $this->getColorString($color) . ' cmyk';
+        }
+
+        if ($color instanceof Gray) {
+            return $this->getColorString($color) . ' gray';
+        }
+
+        return $this->getColorSetString($color->toCmyk());
+    }
+
+    private function getColorString(ColorInterface $color) : string
+    {
+        if ($color instanceof Rgb) {
+            return sprintf('%s %s %s', $color->getRed() / 255, $color->getGreen() / 255, $color->getBlue() / 255);
+        }
+
+        if ($color instanceof Cmyk) {
+            return sprintf(
+                '%s %s %s %s',
+                $color->getCyan() / 100,
+                $color->getMagenta() / 100,
+                $color->getYellow() / 100,
+                $color->getBlack() / 100
+            );
+        }
+
+        if ($color instanceof Gray) {
+            return sprintf('%s', $color->getGray() / 100);
+        }
+
+        return $this->getColorString($color->toCmyk());
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Image/ImageBackEndInterface.php

@@ -0,0 +1,87 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Image;
+
+use BaconQrCode\Exception\RuntimeException;
+use BaconQrCode\Renderer\Color\ColorInterface;
+use BaconQrCode\Renderer\Path\Path;
+use BaconQrCode\Renderer\RendererStyle\Gradient;
+
+/**
+ * Interface for back ends able to to produce path based images.
+ */
+interface ImageBackEndInterface
+{
+    /**
+     * Starts a new image.
+     *
+     * If a previous image was already started, previous data get erased.
+     */
+    public function new(int $size, ColorInterface $backgroundColor) : void;
+
+    /**
+     * Transforms all following drawing operation coordinates by scaling them by a given factor.
+     *
+     * @throws RuntimeException if no image was started yet.
+     */
+    public function scale(float $size) : void;
+
+    /**
+     * Transforms all following drawing operation coordinates by translating them by a given amount.
+     *
+     * @throws RuntimeException if no image was started yet.
+     */
+    public function translate(float $x, float $y) : void;
+
+    /**
+     * Transforms all following drawing operation coordinates by rotating them by a given amount.
+     *
+     * @throws RuntimeException if no image was started yet.
+     */
+    public function rotate(int $degrees) : void;
+
+    /**
+     * Pushes the current coordinate transformation onto a stack.
+     *
+     * @throws RuntimeException if no image was started yet.
+     */
+    public function push() : void;
+
+    /**
+     * Pops the last coordinate transformation from a stack.
+     *
+     * @throws RuntimeException if no image was started yet.
+     */
+    public function pop() : void;
+
+    /**
+     * Draws a path with a given color.
+     *
+     * @throws RuntimeException if no image was started yet.
+     */
+    public function drawPathWithColor(Path $path, ColorInterface $color) : void;
+
+    /**
+     * Draws a path with a given gradient which spans the box described by the position and size.
+     *
+     * @throws RuntimeException if no image was started yet.
+     */
+    public function drawPathWithGradient(
+        Path $path,
+        Gradient $gradient,
+        float $x,
+        float $y,
+        float $width,
+        float $height
+    ) : void;
+
+    /**
+     * Ends the image drawing operation and returns the resulting blob.
+     *
+     * This should reset the state of the back end and thus this method should only be callable once per image.
+     *
+     * @throws RuntimeException if no image was started yet.
+     */
+    public function done() : string;
+}

vendor/bacon/bacon-qr-code/src/Renderer/Image/ImagickImageBackEnd.php

@@ -0,0 +1,339 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Image;
+
+use BaconQrCode\Exception\RuntimeException;
+use BaconQrCode\Renderer\Color\Alpha;
+use BaconQrCode\Renderer\Color\Cmyk;
+use BaconQrCode\Renderer\Color\ColorInterface;
+use BaconQrCode\Renderer\Color\Gray;
+use BaconQrCode\Renderer\Color\Rgb;
+use BaconQrCode\Renderer\Path\Close;
+use BaconQrCode\Renderer\Path\Curve;
+use BaconQrCode\Renderer\Path\EllipticArc;
+use BaconQrCode\Renderer\Path\Line;
+use BaconQrCode\Renderer\Path\Move;
+use BaconQrCode\Renderer\Path\Path;
+use BaconQrCode\Renderer\RendererStyle\Gradient;
+use BaconQrCode\Renderer\RendererStyle\GradientType;
+use Imagick;
+use ImagickDraw;
+use ImagickPixel;
+
+final class ImagickImageBackEnd implements ImageBackEndInterface
+{
+    /**
+     * @var string
+     */
+    private $imageFormat;
+
+    /**
+     * @var int
+     */
+    private $compressionQuality;
+
+    /**
+     * @var Imagick|null
+     */
+    private $image;
+
+    /**
+     * @var ImagickDraw|null
+     */
+    private $draw;
+
+    /**
+     * @var int|null
+     */
+    private $gradientCount;
+
+    /**
+     * @var TransformationMatrix[]|null
+     */
+    private $matrices;
+
+    /**
+     * @var int|null
+     */
+    private $matrixIndex;
+
+    public function __construct(string $imageFormat = 'png', int $compressionQuality = 100)
+    {
+        if (! class_exists(Imagick::class)) {
+            throw new RuntimeException('You need to install the imagick extension to use this back end');
+        }
+
+        $this->imageFormat = $imageFormat;
+        $this->compressionQuality = $compressionQuality;
+    }
+
+    public function new(int $size, ColorInterface $backgroundColor) : void
+    {
+        $this->image = new Imagick();
+        $this->image->newImage($size, $size, $this->getColorPixel($backgroundColor));
+        $this->image->setImageFormat($this->imageFormat);
+        $this->image->setCompressionQuality($this->compressionQuality);
+        $this->draw = new ImagickDraw();
+        $this->gradientCount = 0;
+        $this->matrices = [new TransformationMatrix()];
+        $this->matrixIndex = 0;
+    }
+
+    public function scale(float $size) : void
+    {
+        if (null === $this->draw) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->draw->scale($size, $size);
+        $this->matrices[$this->matrixIndex] = $this->matrices[$this->matrixIndex]
+            ->multiply(TransformationMatrix::scale($size));
+    }
+
+    public function translate(float $x, float $y) : void
+    {
+        if (null === $this->draw) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->draw->translate($x, $y);
+        $this->matrices[$this->matrixIndex] = $this->matrices[$this->matrixIndex]
+            ->multiply(TransformationMatrix::translate($x, $y));
+    }
+
+    public function rotate(int $degrees) : void
+    {
+        if (null === $this->draw) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->draw->rotate($degrees);
+        $this->matrices[$this->matrixIndex] = $this->matrices[$this->matrixIndex]
+            ->multiply(TransformationMatrix::rotate($degrees));
+    }
+
+    public function push() : void
+    {
+        if (null === $this->draw) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->draw->push();
+        $this->matrices[++$this->matrixIndex] = $this->matrices[$this->matrixIndex - 1];
+    }
+
+    public function pop() : void
+    {
+        if (null === $this->draw) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->draw->pop();
+        unset($this->matrices[$this->matrixIndex--]);
+    }
+
+    public function drawPathWithColor(Path $path, ColorInterface $color) : void
+    {
+        if (null === $this->draw) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->draw->setFillColor($this->getColorPixel($color));
+        $this->drawPath($path);
+    }
+
+    public function drawPathWithGradient(
+        Path $path,
+        Gradient $gradient,
+        float $x,
+        float $y,
+        float $width,
+        float $height
+    ) : void {
+        if (null === $this->draw) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->draw->setFillPatternURL('#' . $this->createGradientFill($gradient, $x, $y, $width, $height));
+        $this->drawPath($path);
+    }
+
+    public function done() : string
+    {
+        if (null === $this->draw) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->image->drawImage($this->draw);
+        $blob = $this->image->getImageBlob();
+        $this->draw->clear();
+        $this->image->clear();
+        $this->draw = null;
+        $this->image = null;
+        $this->gradientCount = null;
+
+        return $blob;
+    }
+
+    private function drawPath(Path $path) : void
+    {
+        $this->draw->pathStart();
+
+        foreach ($path as $op) {
+            switch (true) {
+                case $op instanceof Move:
+                    $this->draw->pathMoveToAbsolute($op->getX(), $op->getY());
+                    break;
+
+                case $op instanceof Line:
+                    $this->draw->pathLineToAbsolute($op->getX(), $op->getY());
+                    break;
+
+                case $op instanceof EllipticArc:
+                    $this->draw->pathEllipticArcAbsolute(
+                        $op->getXRadius(),
+                        $op->getYRadius(),
+                        $op->getXAxisAngle(),
+                        $op->isLargeArc(),
+                        $op->isSweep(),
+                        $op->getX(),
+                        $op->getY()
+                    );
+                    break;
+
+                case $op instanceof Curve:
+                    $this->draw->pathCurveToAbsolute(
+                        $op->getX1(),
+                        $op->getY1(),
+                        $op->getX2(),
+                        $op->getY2(),
+                        $op->getX3(),
+                        $op->getY3()
+                    );
+                    break;
+
+                case $op instanceof Close:
+                    $this->draw->pathClose();
+                    break;
+
+                default:
+                    throw new RuntimeException('Unexpected draw operation: ' . get_class($op));
+            }
+        }
+
+        $this->draw->pathFinish();
+    }
+
+    private function createGradientFill(Gradient $gradient, float $x, float $y, float $width, float $height) : string
+    {
+        list($width, $height) = $this->matrices[$this->matrixIndex]->apply($x + $width, $y + $height);
+        list($x, $y) = $this->matrices[$this->matrixIndex]->apply($x, $y);
+        $width -= $x;
+        $height -= $y;
+
+        $startColor = $this->getColorPixel($gradient->getStartColor())->getColorAsString();
+        $endColor = $this->getColorPixel($gradient->getEndColor())->getColorAsString();
+        $gradientImage = new Imagick();
+
+        switch ($gradient->getType()) {
+            case GradientType::HORIZONTAL():
+                $gradientImage->newPseudoImage((int) $height, (int) $width, sprintf(
+                    'gradient:%s-%s',
+                    $startColor,
+                    $endColor
+                ));
+                $gradientImage->rotateImage('transparent', -90);
+                break;
+
+            case GradientType::VERTICAL():
+                $gradientImage->newPseudoImage((int) $width, (int) $height, sprintf(
+                    'gradient:%s-%s',
+                    $startColor,
+                    $endColor
+                ));
+                break;
+
+            case GradientType::DIAGONAL():
+            case GradientType::INVERSE_DIAGONAL():
+                $gradientImage->newPseudoImage((int) ($width * sqrt(2)), (int) ($height * sqrt(2)), sprintf(
+                    'gradient:%s-%s',
+                    $startColor,
+                    $endColor
+                ));
+
+                if (GradientType::DIAGONAL() === $gradient->getType()) {
+                    $gradientImage->rotateImage('transparent', -45);
+                } else {
+                    $gradientImage->rotateImage('transparent', -135);
+                }
+
+                $rotatedWidth = $gradientImage->getImageWidth();
+                $rotatedHeight = $gradientImage->getImageHeight();
+
+                $gradientImage->setImagePage($rotatedWidth, $rotatedHeight, 0, 0);
+                $gradientImage->cropImage(
+                    intdiv($rotatedWidth, 2) - 2,
+                    intdiv($rotatedHeight, 2) - 2,
+                    intdiv($rotatedWidth, 4) + 1,
+                    intdiv($rotatedWidth, 4) + 1
+                );
+                break;
+
+            case GradientType::RADIAL():
+                $gradientImage->newPseudoImage((int) $width, (int) $height, sprintf(
+                    'radial-gradient:%s-%s',
+                    $startColor,
+                    $endColor
+                ));
+                break;
+        }
+
+        $id = sprintf('g%d', ++$this->gradientCount);
+        $this->draw->pushPattern($id, 0, 0, $x + $width, $y + $height);
+        $this->draw->composite(Imagick::COMPOSITE_COPY, $x, $y, $width, $height, $gradientImage);
+        $this->draw->popPattern();
+        return $id;
+    }
+
+    private function getColorPixel(ColorInterface $color) : ImagickPixel
+    {
+        $alpha = 100;
+
+        if ($color instanceof Alpha) {
+            $alpha = $color->getAlpha();
+            $color = $color->getBaseColor();
+        }
+
+        if ($color instanceof Rgb) {
+            return new ImagickPixel(sprintf(
+                'rgba(%d, %d, %d, %F)',
+                $color->getRed(),
+                $color->getGreen(),
+                $color->getBlue(),
+                $alpha / 100
+            ));
+        }
+
+        if ($color instanceof Cmyk) {
+            return new ImagickPixel(sprintf(
+                'cmyka(%d, %d, %d, %d, %F)',
+                $color->getCyan(),
+                $color->getMagenta(),
+                $color->getYellow(),
+                $color->getBlack(),
+                $alpha / 100
+            ));
+        }
+
+        if ($color instanceof Gray) {
+            return new ImagickPixel(sprintf(
+                'graya(%d%%, %F)',
+                $color->getGray(),
+                $alpha / 100
+            ));
+        }
+
+        return $this->getColorPixel(new Alpha($alpha, $color->toRgb()));
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Image/SvgImageBackEnd.php

@@ -0,0 +1,369 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Image;
+
+use BaconQrCode\Exception\RuntimeException;
+use BaconQrCode\Renderer\Color\Alpha;
+use BaconQrCode\Renderer\Color\ColorInterface;
+use BaconQrCode\Renderer\Path\Close;
+use BaconQrCode\Renderer\Path\Curve;
+use BaconQrCode\Renderer\Path\EllipticArc;
+use BaconQrCode\Renderer\Path\Line;
+use BaconQrCode\Renderer\Path\Move;
+use BaconQrCode\Renderer\Path\Path;
+use BaconQrCode\Renderer\RendererStyle\Gradient;
+use BaconQrCode\Renderer\RendererStyle\GradientType;
+use XMLWriter;
+
+final class SvgImageBackEnd implements ImageBackEndInterface
+{
+    private const PRECISION = 3;
+
+    /**
+     * @var XMLWriter|null
+     */
+    private $xmlWriter;
+
+    /**
+     * @var int[]|null
+     */
+    private $stack;
+
+    /**
+     * @var int|null
+     */
+    private $currentStack;
+
+    /**
+     * @var int|null
+     */
+    private $gradientCount;
+
+    public function __construct()
+    {
+        if (! class_exists(XMLWriter::class)) {
+            throw new RuntimeException('You need to install the libxml extension to use this back end');
+        }
+    }
+
+    public function new(int $size, ColorInterface $backgroundColor) : void
+    {
+        $this->xmlWriter = new XMLWriter();
+        $this->xmlWriter->openMemory();
+
+        $this->xmlWriter->startDocument('1.0', 'UTF-8');
+        $this->xmlWriter->startElement('svg');
+        $this->xmlWriter->writeAttribute('xmlns', 'http://www.w3.org/2000/svg');
+        $this->xmlWriter->writeAttribute('version', '1.1');
+        $this->xmlWriter->writeAttribute('width', (string) $size);
+        $this->xmlWriter->writeAttribute('height', (string) $size);
+        $this->xmlWriter->writeAttribute('viewBox', '0 0 '. $size . ' ' . $size);
+
+        $this->gradientCount = 0;
+        $this->currentStack = 0;
+        $this->stack[0] = 0;
+
+        $alpha = 1;
+
+        if ($backgroundColor instanceof Alpha) {
+            $alpha = $backgroundColor->getAlpha() / 100;
+        }
+
+        if (0 === $alpha) {
+            return;
+        }
+
+        $this->xmlWriter->startElement('rect');
+        $this->xmlWriter->writeAttribute('x', '0');
+        $this->xmlWriter->writeAttribute('y', '0');
+        $this->xmlWriter->writeAttribute('width', (string) $size);
+        $this->xmlWriter->writeAttribute('height', (string) $size);
+        $this->xmlWriter->writeAttribute('fill', $this->getColorString($backgroundColor));
+
+        if ($alpha < 1) {
+            $this->xmlWriter->writeAttribute('fill-opacity', (string) $alpha);
+        }
+
+        $this->xmlWriter->endElement();
+    }
+
+    public function scale(float $size) : void
+    {
+        if (null === $this->xmlWriter) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->xmlWriter->startElement('g');
+        $this->xmlWriter->writeAttribute(
+            'transform',
+            sprintf('scale(%s)', round($size, self::PRECISION))
+        );
+        ++$this->stack[$this->currentStack];
+    }
+
+    public function translate(float $x, float $y) : void
+    {
+        if (null === $this->xmlWriter) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->xmlWriter->startElement('g');
+        $this->xmlWriter->writeAttribute(
+            'transform',
+            sprintf('translate(%s,%s)', round($x, self::PRECISION), round($y, self::PRECISION))
+        );
+        ++$this->stack[$this->currentStack];
+    }
+
+    public function rotate(int $degrees) : void
+    {
+        if (null === $this->xmlWriter) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->xmlWriter->startElement('g');
+        $this->xmlWriter->writeAttribute('transform', sprintf('rotate(%d)', $degrees));
+        ++$this->stack[$this->currentStack];
+    }
+
+    public function push() : void
+    {
+        if (null === $this->xmlWriter) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $this->xmlWriter->startElement('g');
+        $this->stack[] = 1;
+        ++$this->currentStack;
+    }
+
+    public function pop() : void
+    {
+        if (null === $this->xmlWriter) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        for ($i = 0; $i < $this->stack[$this->currentStack]; ++$i) {
+            $this->xmlWriter->endElement();
+        }
+
+        array_pop($this->stack);
+        --$this->currentStack;
+    }
+
+    public function drawPathWithColor(Path $path, ColorInterface $color) : void
+    {
+        if (null === $this->xmlWriter) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $alpha = 1;
+
+        if ($color instanceof Alpha) {
+            $alpha = $color->getAlpha() / 100;
+        }
+
+        $this->startPathElement($path);
+        $this->xmlWriter->writeAttribute('fill', $this->getColorString($color));
+
+        if ($alpha < 1) {
+            $this->xmlWriter->writeAttribute('fill-opacity', (string) $alpha);
+        }
+
+        $this->xmlWriter->endElement();
+    }
+
+    public function drawPathWithGradient(
+        Path $path,
+        Gradient $gradient,
+        float $x,
+        float $y,
+        float $width,
+        float $height
+    ) : void {
+        if (null === $this->xmlWriter) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        $gradientId = $this->createGradientFill($gradient, $x, $y, $width, $height);
+        $this->startPathElement($path);
+        $this->xmlWriter->writeAttribute('fill', 'url(#' . $gradientId . ')');
+        $this->xmlWriter->endElement();
+    }
+
+    public function done() : string
+    {
+        if (null === $this->xmlWriter) {
+            throw new RuntimeException('No image has been started');
+        }
+
+        foreach ($this->stack as $openElements) {
+            for ($i = $openElements; $i > 0; --$i) {
+                $this->xmlWriter->endElement();
+            }
+        }
+
+        $this->xmlWriter->endDocument();
+        $blob = $this->xmlWriter->outputMemory(true);
+        $this->xmlWriter = null;
+        $this->stack = null;
+        $this->currentStack = null;
+        $this->gradientCount = null;
+
+        return $blob;
+    }
+
+    private function startPathElement(Path $path) : void
+    {
+        $pathData = [];
+
+        foreach ($path as $op) {
+            switch (true) {
+                case $op instanceof Move:
+                    $pathData[] = sprintf(
+                        'M%s %s',
+                        round($op->getX(), self::PRECISION),
+                        round($op->getY(), self::PRECISION)
+                    );
+                    break;
+
+                case $op instanceof Line:
+                    $pathData[] = sprintf(
+                        'L%s %s',
+                        round($op->getX(), self::PRECISION),
+                        round($op->getY(), self::PRECISION)
+                    );
+                    break;
+
+                case $op instanceof EllipticArc:
+                    $pathData[] = sprintf(
+                        'A%s %s %s %u %u %s %s',
+                        round($op->getXRadius(), self::PRECISION),
+                        round($op->getYRadius(), self::PRECISION),
+                        round($op->getXAxisAngle(), self::PRECISION),
+                        $op->isLargeArc(),
+                        $op->isSweep(),
+                        round($op->getX(), self::PRECISION),
+                        round($op->getY(), self::PRECISION)
+                    );
+                    break;
+
+                case $op instanceof Curve:
+                    $pathData[] = sprintf(
+                        'C%s %s %s %s %s %s',
+                        round($op->getX1(), self::PRECISION),
+                        round($op->getY1(), self::PRECISION),
+                        round($op->getX2(), self::PRECISION),
+                        round($op->getY2(), self::PRECISION),
+                        round($op->getX3(), self::PRECISION),
+                        round($op->getY3(), self::PRECISION)
+                    );
+                    break;
+
+                case $op instanceof Close:
+                    $pathData[] = 'Z';
+                    break;
+
+                default:
+                    throw new RuntimeException('Unexpected draw operation: ' . get_class($op));
+            }
+        }
+
+        $this->xmlWriter->startElement('path');
+        $this->xmlWriter->writeAttribute('fill-rule', 'evenodd');
+        $this->xmlWriter->writeAttribute('d', implode('', $pathData));
+    }
+
+    private function createGradientFill(Gradient $gradient, float $x, float $y, float $width, float $height) : string
+    {
+        $this->xmlWriter->startElement('defs');
+
+        $startColor = $gradient->getStartColor();
+        $endColor = $gradient->getEndColor();
+
+        if ($gradient->getType() === GradientType::RADIAL()) {
+            $this->xmlWriter->startElement('radialGradient');
+        } else {
+            $this->xmlWriter->startElement('linearGradient');
+        }
+
+        $this->xmlWriter->writeAttribute('gradientUnits', 'userSpaceOnUse');
+
+        switch ($gradient->getType()) {
+            case GradientType::HORIZONTAL():
+                $this->xmlWriter->writeAttribute('x1', (string) round($x, self::PRECISION));
+                $this->xmlWriter->writeAttribute('y1', (string) round($y, self::PRECISION));
+                $this->xmlWriter->writeAttribute('x2', (string) round($x + $width, self::PRECISION));
+                $this->xmlWriter->writeAttribute('y2', (string) round($y, self::PRECISION));
+                break;
+
+            case GradientType::VERTICAL():
+                $this->xmlWriter->writeAttribute('x1', (string) round($x, self::PRECISION));
+                $this->xmlWriter->writeAttribute('y1', (string) round($y, self::PRECISION));
+                $this->xmlWriter->writeAttribute('x2', (string) round($x, self::PRECISION));
+                $this->xmlWriter->writeAttribute('y2', (string) round($y + $height, self::PRECISION));
+                break;
+
+            case GradientType::DIAGONAL():
+                $this->xmlWriter->writeAttribute('x1', (string) round($x, self::PRECISION));
+                $this->xmlWriter->writeAttribute('y1', (string) round($y, self::PRECISION));
+                $this->xmlWriter->writeAttribute('x2', (string) round($x + $width, self::PRECISION));
+                $this->xmlWriter->writeAttribute('y2', (string) round($y + $height, self::PRECISION));
+                break;
+
+            case GradientType::INVERSE_DIAGONAL():
+                $this->xmlWriter->writeAttribute('x1', (string) round($x, self::PRECISION));
+                $this->xmlWriter->writeAttribute('y1', (string) round($y + $height, self::PRECISION));
+                $this->xmlWriter->writeAttribute('x2', (string) round($x + $width, self::PRECISION));
+                $this->xmlWriter->writeAttribute('y2', (string) round($y, self::PRECISION));
+                break;
+
+            case GradientType::RADIAL():
+                $this->xmlWriter->writeAttribute('cx', (string) round(($x + $width) / 2, self::PRECISION));
+                $this->xmlWriter->writeAttribute('cy', (string) round(($y + $height) / 2, self::PRECISION));
+                $this->xmlWriter->writeAttribute('r', (string) round(max($width, $height) / 2, self::PRECISION));
+                break;
+        }
+
+        $id = sprintf('g%d', ++$this->gradientCount);
+        $this->xmlWriter->writeAttribute('id', $id);
+
+        $this->xmlWriter->startElement('stop');
+        $this->xmlWriter->writeAttribute('offset', '0%');
+        $this->xmlWriter->writeAttribute('stop-color', $this->getColorString($startColor));
+
+        if ($startColor instanceof Alpha) {
+            $this->xmlWriter->writeAttribute('stop-opacity', $startColor->getAlpha());
+        }
+
+        $this->xmlWriter->endElement();
+
+        $this->xmlWriter->startElement('stop');
+        $this->xmlWriter->writeAttribute('offset', '100%');
+        $this->xmlWriter->writeAttribute('stop-color', $this->getColorString($endColor));
+
+        if ($endColor instanceof Alpha) {
+            $this->xmlWriter->writeAttribute('stop-opacity', $endColor->getAlpha());
+        }
+
+        $this->xmlWriter->endElement();
+
+        $this->xmlWriter->endElement();
+        $this->xmlWriter->endElement();
+
+        return $id;
+    }
+
+    private function getColorString(ColorInterface $color) : string
+    {
+        $color = $color->toRgb();
+
+        return sprintf(
+            '#%02x%02x%02x',
+            $color->getRed(),
+            $color->getGreen(),
+            $color->getBlue()
+        );
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Image/TransformationMatrix.php

@@ -0,0 +1,68 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Image;
+
+final class TransformationMatrix
+{
+    /**
+     * @var float[]
+     */
+    private $values;
+
+    public function __construct()
+    {
+        $this->values = [1, 0, 0, 1, 0, 0];
+    }
+
+    public function multiply(self $other) : self
+    {
+        $matrix = new self();
+        $matrix->values[0] = $this->values[0] * $other->values[0] + $this->values[2] * $other->values[1];
+        $matrix->values[1] = $this->values[1] * $other->values[0] + $this->values[3] * $other->values[1];
+        $matrix->values[2] = $this->values[0] * $other->values[2] + $this->values[2] * $other->values[3];
+        $matrix->values[3] = $this->values[1] * $other->values[2] + $this->values[3] * $other->values[3];
+        $matrix->values[4] = $this->values[0] * $other->values[4] + $this->values[2] * $other->values[5]
+            + $this->values[4];
+        $matrix->values[5] = $this->values[1] * $other->values[4] + $this->values[3] * $other->values[5]
+            + $this->values[5];
+
+        return $matrix;
+    }
+
+    public static function scale(float $size) : self
+    {
+        $matrix = new self();
+        $matrix->values = [$size, 0, 0, $size, 0, 0];
+        return $matrix;
+    }
+
+    public static function translate(float $x, float $y) : self
+    {
+        $matrix = new self();
+        $matrix->values = [1, 0, 0, 1, $x, $y];
+        return $matrix;
+    }
+
+    public static function rotate(int $degrees) : self
+    {
+        $matrix = new self();
+        $rad = deg2rad($degrees);
+        $matrix->values = [cos($rad), sin($rad), -sin($rad), cos($rad), 0, 0];
+        return $matrix;
+    }
+
+
+    /**
+     * Applies this matrix onto a point and returns the resulting viewport point.
+     *
+     * @return float[]
+     */
+    public function apply(float $x, float $y) : array
+    {
+        return [
+            $x * $this->values[0] + $y * $this->values[2] + $this->values[4],
+            $x * $this->values[1] + $y * $this->values[3] + $this->values[5],
+        ];
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/ImageRenderer.php

@@ -0,0 +1,152 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer;
+
+use BaconQrCode\Encoder\MatrixUtil;
+use BaconQrCode\Encoder\QrCode;
+use BaconQrCode\Exception\InvalidArgumentException;
+use BaconQrCode\Renderer\Image\ImageBackEndInterface;
+use BaconQrCode\Renderer\Path\Path;
+use BaconQrCode\Renderer\RendererStyle\EyeFill;
+use BaconQrCode\Renderer\RendererStyle\RendererStyle;
+
+final class ImageRenderer implements RendererInterface
+{
+    /**
+     * @var RendererStyle
+     */
+    private $rendererStyle;
+
+    /**
+     * @var ImageBackEndInterface
+     */
+    private $imageBackEnd;
+
+    public function __construct(RendererStyle $rendererStyle, ImageBackEndInterface $imageBackEnd)
+    {
+        $this->rendererStyle = $rendererStyle;
+        $this->imageBackEnd = $imageBackEnd;
+    }
+
+    /**
+     * @throws InvalidArgumentException if matrix width doesn't match height
+     */
+    public function render(QrCode $qrCode) : string
+    {
+        $size = $this->rendererStyle->getSize();
+        $margin = $this->rendererStyle->getMargin();
+        $matrix = $qrCode->getMatrix();
+        $matrixSize = $matrix->getWidth();
+
+        if ($matrixSize !== $matrix->getHeight()) {
+            throw new InvalidArgumentException('Matrix must have the same width and height');
+        }
+
+        $totalSize = $matrixSize + ($margin * 2);
+        $moduleSize = $size / $totalSize;
+        $fill = $this->rendererStyle->getFill();
+
+        $this->imageBackEnd->new($size, $fill->getBackgroundColor());
+        $this->imageBackEnd->scale((float) $moduleSize);
+        $this->imageBackEnd->translate((float) $margin, (float) $margin);
+
+        $module = $this->rendererStyle->getModule();
+        $moduleMatrix = clone $matrix;
+        MatrixUtil::removePositionDetectionPatterns($moduleMatrix);
+        $modulePath = $this->drawEyes($matrixSize, $module->createPath($moduleMatrix));
+
+        if ($fill->hasGradientFill()) {
+            $this->imageBackEnd->drawPathWithGradient(
+                $modulePath,
+                $fill->getForegroundGradient(),
+                0,
+                0,
+                $matrixSize,
+                $matrixSize
+            );
+        } else {
+            $this->imageBackEnd->drawPathWithColor($modulePath, $fill->getForegroundColor());
+        }
+
+        return $this->imageBackEnd->done();
+    }
+
+    private function drawEyes(int $matrixSize, Path $modulePath) : Path
+    {
+        $fill = $this->rendererStyle->getFill();
+
+        $eye = $this->rendererStyle->getEye();
+        $externalPath = $eye->getExternalPath();
+        $internalPath = $eye->getInternalPath();
+
+        $modulePath = $this->drawEye(
+            $externalPath,
+            $internalPath,
+            $fill->getTopLeftEyeFill(),
+            3.5,
+            3.5,
+            0,
+            $modulePath
+        );
+        $modulePath = $this->drawEye(
+            $externalPath,
+            $internalPath,
+            $fill->getTopRightEyeFill(),
+            $matrixSize - 3.5,
+            3.5,
+            90,
+            $modulePath
+        );
+        $modulePath = $this->drawEye(
+            $externalPath,
+            $internalPath,
+            $fill->getBottomLeftEyeFill(),
+            3.5,
+            $matrixSize - 3.5,
+            -90,
+            $modulePath
+        );
+
+        return $modulePath;
+    }
+
+    private function drawEye(
+        Path $externalPath,
+        Path $internalPath,
+        EyeFill $fill,
+        float $xTranslation,
+        float $yTranslation,
+        int $rotation,
+        Path $modulePath
+    ) : Path {
+        if ($fill->inheritsBothColors()) {
+            return $modulePath
+                ->append($externalPath->translate($xTranslation, $yTranslation))
+                ->append($internalPath->translate($xTranslation, $yTranslation));
+        }
+
+        $this->imageBackEnd->push();
+        $this->imageBackEnd->translate($xTranslation, $yTranslation);
+
+        if (0 !== $rotation) {
+            $this->imageBackEnd->rotate($rotation);
+        }
+
+        if ($fill->inheritsExternalColor()) {
+            $modulePath = $modulePath->append($externalPath->translate($xTranslation, $yTranslation));
+        } else {
+            $this->imageBackEnd->drawPathWithColor($externalPath, $fill->getExternalColor());
+        }
+
+        if ($fill->inheritsInternalColor()) {
+            $modulePath = $modulePath->append($internalPath->translate($xTranslation, $yTranslation));
+        } else {
+            $this->imageBackEnd->drawPathWithColor($internalPath, $fill->getInternalColor());
+        }
+
+        $this->imageBackEnd->pop();
+
+        return $modulePath;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Module/DotsModule.php

@@ -0,0 +1,63 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Module;
+
+use BaconQrCode\Encoder\ByteMatrix;
+use BaconQrCode\Exception\InvalidArgumentException;
+use BaconQrCode\Renderer\Path\Path;
+
+/**
+ * Renders individual modules as dots.
+ */
+final class DotsModule implements ModuleInterface
+{
+    public const LARGE = 1;
+    public const MEDIUM = .8;
+    public const SMALL = .6;
+
+    /**
+     * @var float
+     */
+    private $size;
+
+    public function __construct(float $size)
+    {
+        if ($size <= 0 || $size > 1) {
+            throw new InvalidArgumentException('Size must between 0 (exclusive) and 1 (inclusive)');
+        }
+
+        $this->size = $size;
+    }
+
+    public function createPath(ByteMatrix $matrix) : Path
+    {
+        $width = $matrix->getWidth();
+        $height = $matrix->getHeight();
+        $path = new Path();
+        $halfSize = $this->size / 2;
+        $margin = (1 - $this->size) / 2;
+
+        for ($y = 0; $y < $height; ++$y) {
+            for ($x = 0; $x < $width; ++$x) {
+                if (! $matrix->get($x, $y)) {
+                    continue;
+                }
+
+                $pathX = $x + $margin;
+                $pathY = $y + $margin;
+
+                $path = $path
+                    ->move($pathX + $this->size, $pathY + $halfSize)
+                    ->ellipticArc($halfSize, $halfSize, 0, false, true, $pathX + $halfSize, $pathY + $this->size)
+                    ->ellipticArc($halfSize, $halfSize, 0, false, true, $pathX, $pathY + $halfSize)
+                    ->ellipticArc($halfSize, $halfSize, 0, false, true, $pathX + $halfSize, $pathY)
+                    ->ellipticArc($halfSize, $halfSize, 0, false, true, $pathX + $this->size, $pathY + $halfSize)
+                    ->close()
+                ;
+            }
+        }
+
+        return $path;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Module/EdgeIterator/Edge.php

@@ -0,0 +1,100 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Module\EdgeIterator;
+
+final class Edge
+{
+    /**
+     * @var bool
+     */
+    private $positive;
+
+    /**
+     * @var array<int[]>
+     */
+    private $points = [];
+
+    /**
+     * @var array<int[]>|null
+     */
+    private $simplifiedPoints;
+
+    /**
+     * @var int
+     */
+    private $minX = PHP_INT_MAX;
+
+    /**
+     * @var int
+     */
+    private $minY = PHP_INT_MAX;
+
+    /**
+     * @var int
+     */
+    private $maxX = -1;
+
+    /**
+     * @var int
+     */
+    private $maxY = -1;
+
+    public function __construct(bool $positive)
+    {
+        $this->positive = $positive;
+    }
+
+    public function addPoint(int $x, int $y) : void
+    {
+        $this->points[] = [$x, $y];
+        $this->minX = min($this->minX, $x);
+        $this->minY = min($this->minY, $y);
+        $this->maxX = max($this->maxX, $x);
+        $this->maxY = max($this->maxY, $y);
+    }
+
+    public function isPositive() : bool
+    {
+        return $this->positive;
+    }
+
+    /**
+     * @return array<int[]>
+     */
+    public function getPoints() : array
+    {
+        return $this->points;
+    }
+
+    public function getMaxX() : int
+    {
+        return $this->maxX;
+    }
+
+    public function getSimplifiedPoints() : array
+    {
+        if (null !== $this->simplifiedPoints) {
+            return $this->simplifiedPoints;
+        }
+
+        $points = [];
+        $length = count($this->points);
+
+        for ($i = 0; $i < $length; ++$i) {
+            $previousPoint = $this->points[(0 === $i ? $length : $i) - 1];
+            $nextPoint = $this->points[($length - 1 === $i ? -1 : $i) + 1];
+            $currentPoint = $this->points[$i];
+
+            if (($previousPoint[0] === $currentPoint[0] && $currentPoint[0] === $nextPoint[0])
+                || ($previousPoint[1] === $currentPoint[1] && $currentPoint[1] === $nextPoint[1])
+            ) {
+                continue;
+            }
+
+            $points[] = $currentPoint;
+        }
+
+        return $this->simplifiedPoints = $points;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Module/EdgeIterator/EdgeIterator.php

@@ -0,0 +1,169 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Module\EdgeIterator;
+
+use BaconQrCode\Encoder\ByteMatrix;
+use IteratorAggregate;
+use Traversable;
+
+/**
+ * Edge iterator based on potrace.
+ */
+final class EdgeIterator implements IteratorAggregate
+{
+    /**
+     * @var int[]
+     */
+    private $bytes = [];
+
+    /**
+     * @var int
+     */
+    private $size;
+
+    /**
+     * @var int
+     */
+    private $width;
+
+    /**
+     * @var int
+     */
+    private $height;
+
+    public function __construct(ByteMatrix $matrix)
+    {
+        $this->bytes = iterator_to_array($matrix->getBytes());
+        $this->size = count($this->bytes);
+        $this->width = $matrix->getWidth();
+        $this->height = $matrix->getHeight();
+    }
+
+    /**
+     * @return Edge[]
+     */
+    public function getIterator() : Traversable
+    {
+        $originalBytes = $this->bytes;
+        $point = $this->findNext(0, 0);
+
+        while (null !== $point) {
+            $edge = $this->findEdge($point[0], $point[1]);
+            $this->xorEdge($edge);
+
+            yield $edge;
+
+            $point = $this->findNext($point[0], $point[1]);
+        }
+
+        $this->bytes = $originalBytes;
+    }
+
+    /**
+     * @return int[]|null
+     */
+    private function findNext(int $x, int $y) : ?array
+    {
+        $i = $this->width * $y + $x;
+
+        while ($i < $this->size && 1 !== $this->bytes[$i]) {
+            ++$i;
+        }
+
+        if ($i < $this->size) {
+            return $this->pointOf($i);
+        }
+
+        return null;
+    }
+
+    private function findEdge(int $x, int $y) : Edge
+    {
+        $edge = new Edge($this->isSet($x, $y));
+        $startX = $x;
+        $startY = $y;
+        $dirX = 0;
+        $dirY = 1;
+
+        while (true) {
+            $edge->addPoint($x, $y);
+            $x += $dirX;
+            $y += $dirY;
+
+            if ($x === $startX && $y === $startY) {
+                break;
+            }
+
+            $left = $this->isSet($x + ($dirX + $dirY - 1 ) / 2, $y + ($dirY - $dirX - 1) / 2);
+            $right = $this->isSet($x + ($dirX - $dirY - 1) / 2, $y + ($dirY + $dirX - 1) / 2);
+
+            if ($right && ! $left) {
+                $tmp = $dirX;
+                $dirX = -$dirY;
+                $dirY = $tmp;
+            } elseif ($right) {
+                $tmp = $dirX;
+                $dirX = -$dirY;
+                $dirY = $tmp;
+            } elseif (! $left) {
+                $tmp = $dirX;
+                $dirX = $dirY;
+                $dirY = -$tmp;
+            }
+        }
+
+        return $edge;
+    }
+
+    private function xorEdge(Edge $path) : void
+    {
+        $points = $path->getPoints();
+        $y1 = $points[0][1];
+        $length = count($points);
+        $maxX = $path->getMaxX();
+
+        for ($i = 1; $i < $length; ++$i) {
+            $y = $points[$i][1];
+
+            if ($y === $y1) {
+                continue;
+            }
+
+            $x = $points[$i][0];
+            $minY = min($y1, $y);
+
+            for ($j = $x; $j < $maxX; ++$j) {
+                $this->flip($j, $minY);
+            }
+
+            $y1 = $y;
+        }
+    }
+
+    private function isSet(int $x, int $y) : bool
+    {
+        return (
+            $x >= 0
+            && $x < $this->width
+            && $y >= 0
+            && $y < $this->height
+        ) && 1 === $this->bytes[$this->width * $y + $x];
+    }
+
+    /**
+     * @return int[]
+     */
+    private function pointOf(int $i) : array
+    {
+        $y = intdiv($i, $this->width);
+        return [$i - $y * $this->width, $y];
+    }
+
+    private function flip(int $x, int $y) : void
+    {
+        $this->bytes[$this->width * $y + $x] = (
+            $this->isSet($x, $y) ? 0 : 1
+        );
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Module/ModuleInterface.php

@@ -0,0 +1,18 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Module;
+
+use BaconQrCode\Encoder\ByteMatrix;
+use BaconQrCode\Renderer\Path\Path;
+
+/**
+ * Interface describing how modules should be rendered.
+ *
+ * A module always receives a byte matrix (with values either being 1 or 0). It returns a path, where the origin
+ * coordinate (0, 0) equals the top left corner of the first matrix value.
+ */
+interface ModuleInterface
+{
+    public function createPath(ByteMatrix $matrix) : Path;
+}

vendor/bacon/bacon-qr-code/src/Renderer/Module/RoundnessModule.php

@@ -0,0 +1,129 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Module;
+
+use BaconQrCode\Encoder\ByteMatrix;
+use BaconQrCode\Exception\InvalidArgumentException;
+use BaconQrCode\Renderer\Module\EdgeIterator\EdgeIterator;
+use BaconQrCode\Renderer\Path\Path;
+
+/**
+ * Rounds the corners of module groups.
+ */
+final class RoundnessModule implements ModuleInterface
+{
+    public const STRONG = 1;
+    public const MEDIUM = .5;
+    public const SOFT = .25;
+
+    /**
+     * @var float
+     */
+    private $intensity;
+
+    public function __construct(float $intensity)
+    {
+        if ($intensity <= 0 || $intensity > 1) {
+            throw new InvalidArgumentException('Intensity must between 0 (exclusive) and 1 (inclusive)');
+        }
+
+        $this->intensity = $intensity / 2;
+    }
+
+    public function createPath(ByteMatrix $matrix) : Path
+    {
+        $path = new Path();
+
+        foreach (new EdgeIterator($matrix) as $edge) {
+            $points = $edge->getSimplifiedPoints();
+            $length = count($points);
+
+            $currentPoint = $points[0];
+            $nextPoint = $points[1];
+            $horizontal = ($currentPoint[1] === $nextPoint[1]);
+
+            if ($horizontal) {
+                $right = $nextPoint[0] > $currentPoint[0];
+                $path = $path->move(
+                    $currentPoint[0] + ($right ? $this->intensity : -$this->intensity),
+                    $currentPoint[1]
+                );
+            } else {
+                $up = $nextPoint[0] < $currentPoint[0];
+                $path = $path->move(
+                    $currentPoint[0],
+                    $currentPoint[1] + ($up ? -$this->intensity : $this->intensity)
+                );
+            }
+
+            for ($i = 1; $i <= $length; ++$i) {
+                if ($i === $length) {
+                    $previousPoint = $points[$length - 1];
+                    $currentPoint = $points[0];
+                    $nextPoint = $points[1];
+                } else {
+                    $previousPoint = $points[(0 === $i ? $length : $i) - 1];
+                    $currentPoint = $points[$i];
+                    $nextPoint = $points[($length - 1 === $i ? -1 : $i) + 1];
+                }
+
+                $horizontal = ($previousPoint[1] === $currentPoint[1]);
+
+                if ($horizontal) {
+                    $right = $previousPoint[0] < $currentPoint[0];
+                    $up = $nextPoint[1] < $currentPoint[1];
+                    $sweep = ($up xor $right);
+
+                    if ($this->intensity < 0.5
+                        || ($right && $previousPoint[0] !== $currentPoint[0] - 1)
+                        || (! $right && $previousPoint[0] - 1 !== $currentPoint[0])
+                    ) {
+                        $path = $path->line(
+                            $currentPoint[0] + ($right ? -$this->intensity : $this->intensity),
+                            $currentPoint[1]
+                        );
+                    }
+
+                    $path = $path->ellipticArc(
+                        $this->intensity,
+                        $this->intensity,
+                        0,
+                        false,
+                        $sweep,
+                        $currentPoint[0],
+                        $currentPoint[1] + ($up ? -$this->intensity : $this->intensity)
+                    );
+                } else {
+                    $up = $previousPoint[1] > $currentPoint[1];
+                    $right = $nextPoint[0] > $currentPoint[0];
+                    $sweep = ! ($up xor $right);
+
+                    if ($this->intensity < 0.5
+                        || ($up && $previousPoint[1] !== $currentPoint[1] + 1)
+                        || (! $up && $previousPoint[0] + 1 !== $currentPoint[0])
+                    ) {
+                        $path = $path->line(
+                            $currentPoint[0],
+                            $currentPoint[1] + ($up ? $this->intensity : -$this->intensity)
+                        );
+                    }
+
+                    $path = $path->ellipticArc(
+                        $this->intensity,
+                        $this->intensity,
+                        0,
+                        false,
+                        $sweep,
+                        $currentPoint[0] + ($right ? $this->intensity : -$this->intensity),
+                        $currentPoint[1]
+                    );
+                }
+            }
+
+            $path = $path->close();
+        }
+
+        return $path;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Module/SquareModule.php

@@ -0,0 +1,47 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Module;
+
+use BaconQrCode\Encoder\ByteMatrix;
+use BaconQrCode\Renderer\Module\EdgeIterator\EdgeIterator;
+use BaconQrCode\Renderer\Path\Path;
+
+/**
+ * Groups modules together to a single path.
+ */
+final class SquareModule implements ModuleInterface
+{
+    /**
+     * @var self|null
+     */
+    private static $instance;
+
+    private function __construct()
+    {
+    }
+
+    public static function instance() : self
+    {
+        return self::$instance ?: self::$instance = new self();
+    }
+
+    public function createPath(ByteMatrix $matrix) : Path
+    {
+        $path = new Path();
+
+        foreach (new EdgeIterator($matrix) as $edge) {
+            $points = $edge->getSimplifiedPoints();
+            $length = count($points);
+            $path = $path->move($points[0][0], $points[0][1]);
+
+            for ($i = 1; $i < $length; ++$i) {
+                $path = $path->line($points[$i][0], $points[$i][1]);
+            }
+
+            $path = $path->close();
+        }
+
+        return $path;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Path/Close.php

@@ -0,0 +1,29 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Path;
+
+final class Close implements OperationInterface
+{
+    /**
+     * @var self|null
+     */
+    private static $instance;
+
+    private function __construct()
+    {
+    }
+
+    public static function instance() : self
+    {
+        return self::$instance ?: self::$instance = new self();
+    }
+
+    /**
+     * @return self
+     */
+    public function translate(float $x, float $y) : OperationInterface
+    {
+        return $this;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Path/Curve.php

@@ -0,0 +1,92 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Path;
+
+final class Curve implements OperationInterface
+{
+    /**
+     * @var float
+     */
+    private $x1;
+
+    /**
+     * @var float
+     */
+    private $y1;
+
+    /**
+     * @var float
+     */
+    private $x2;
+
+    /**
+     * @var float
+     */
+    private $y2;
+
+    /**
+     * @var float
+     */
+    private $x3;
+
+    /**
+     * @var float
+     */
+    private $y3;
+
+    public function __construct(float $x1, float $y1, float $x2, float $y2, float $x3, float $y3)
+    {
+        $this->x1 = $x1;
+        $this->y1 = $y1;
+        $this->x2 = $x2;
+        $this->y2 = $y2;
+        $this->x3 = $x3;
+        $this->y3 = $y3;
+    }
+
+    public function getX1() : float
+    {
+        return $this->x1;
+    }
+
+    public function getY1() : float
+    {
+        return $this->y1;
+    }
+
+    public function getX2() : float
+    {
+        return $this->x2;
+    }
+
+    public function getY2() : float
+    {
+        return $this->y2;
+    }
+
+    public function getX3() : float
+    {
+        return $this->x3;
+    }
+
+    public function getY3() : float
+    {
+        return $this->y3;
+    }
+
+    /**
+     * @return self
+     */
+    public function translate(float $x, float $y) : OperationInterface
+    {
+        return new self(
+            $this->x1 + $x,
+            $this->y1 + $y,
+            $this->x2 + $x,
+            $this->y2 + $y,
+            $this->x3 + $x,
+            $this->y3 + $y
+        );
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Path/EllipticArc.php

@@ -0,0 +1,278 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Path;
+
+final class EllipticArc implements OperationInterface
+{
+    private const ZERO_TOLERANCE = 1e-05;
+
+    /**
+     * @var float
+     */
+    private $xRadius;
+
+    /**
+     * @var float
+     */
+    private $yRadius;
+
+    /**
+     * @var float
+     */
+    private $xAxisAngle;
+
+    /**
+     * @var bool
+     */
+    private $largeArc;
+
+    /**
+     * @var bool
+     */
+    private $sweep;
+
+    /**
+     * @var float
+     */
+    private $x;
+
+    /**
+     * @var float
+     */
+    private $y;
+
+    public function __construct(
+        float $xRadius,
+        float $yRadius,
+        float $xAxisAngle,
+        bool $largeArc,
+        bool $sweep,
+        float $x,
+        float $y
+    ) {
+        $this->xRadius = abs($xRadius);
+        $this->yRadius = abs($yRadius);
+        $this->xAxisAngle = $xAxisAngle % 360;
+        $this->largeArc = $largeArc;
+        $this->sweep = $sweep;
+        $this->x = $x;
+        $this->y = $y;
+    }
+
+    public function getXRadius() : float
+    {
+        return $this->xRadius;
+    }
+
+    public function getYRadius() : float
+    {
+        return $this->yRadius;
+    }
+
+    public function getXAxisAngle() : float
+    {
+        return $this->xAxisAngle;
+    }
+
+    public function isLargeArc() : bool
+    {
+        return $this->largeArc;
+    }
+
+    public function isSweep() : bool
+    {
+        return $this->sweep;
+    }
+
+    public function getX() : float
+    {
+        return $this->x;
+    }
+
+    public function getY() : float
+    {
+        return $this->y;
+    }
+
+    /**
+     * @return self
+     */
+    public function translate(float $x, float $y) : OperationInterface
+    {
+        return new self(
+            $this->xRadius,
+            $this->yRadius,
+            $this->xAxisAngle,
+            $this->largeArc,
+            $this->sweep,
+            $this->x + $x,
+            $this->y + $y
+        );
+    }
+
+    /**
+     * Converts the elliptic arc to multiple curves.
+     *
+     * Since not all image back ends support elliptic arcs, this method allows to convert the arc into multiple curves
+     * resembling the same result.
+     *
+     * @see https://mortoray.com/2017/02/16/rendering-an-svg-elliptical-arc-as-bezier-curves/
+     * @return array<Curve|Line>
+     */
+    public function toCurves(float $fromX, float $fromY) : array
+    {
+        if (sqrt(($fromX - $this->x) ** 2 + ($fromY - $this->y) ** 2) < self::ZERO_TOLERANCE) {
+            return [];
+        }
+
+        if ($this->xRadius < self::ZERO_TOLERANCE || $this->yRadius < self::ZERO_TOLERANCE) {
+            return [new Line($this->x, $this->y)];
+        }
+
+        return $this->createCurves($fromX, $fromY);
+    }
+
+    /**
+     * @return Curve[]
+     */
+    private function createCurves(float $fromX, $fromY) : array
+    {
+        $xAngle = deg2rad($this->xAxisAngle);
+        list($centerX, $centerY, $radiusX, $radiusY, $startAngle, $deltaAngle) =
+            $this->calculateCenterPointParameters($fromX, $fromY, $xAngle);
+
+        $s = $startAngle;
+        $e = $s + $deltaAngle;
+        $sign = ($e < $s) ? -1 : 1;
+        $remain = abs($e - $s);
+        $p1 = self::point($centerX, $centerY, $radiusX, $radiusY, $xAngle, $s);
+        $curves = [];
+
+        while ($remain > self::ZERO_TOLERANCE) {
+            $step = min($remain, pi() / 2);
+            $signStep = $step * $sign;
+            $p2 = self::point($centerX, $centerY, $radiusX, $radiusY, $xAngle, $s + $signStep);
+
+            $alphaT = tan($signStep / 2);
+            $alpha = sin($signStep) * (sqrt(4 + 3 * $alphaT ** 2) - 1) / 3;
+            $d1 = self::derivative($radiusX, $radiusY, $xAngle, $s);
+            $d2 = self::derivative($radiusX, $radiusY, $xAngle, $s + $signStep);
+
+            $curves[] = new Curve(
+                $p1[0] + $alpha * $d1[0],
+                $p1[1] + $alpha * $d1[1],
+                $p2[0] - $alpha * $d2[0],
+                $p2[1] - $alpha * $d2[1],
+                $p2[0],
+                $p2[1]
+            );
+
+            $s += $signStep;
+            $remain -= $step;
+            $p1 = $p2;
+        }
+
+        return $curves;
+    }
+
+    /**
+     * @return float[]
+     */
+    private function calculateCenterPointParameters(float $fromX, float $fromY, float $xAngle)
+    {
+        $rX = $this->xRadius;
+        $rY = $this->yRadius;
+
+        // F.6.5.1
+        $dx2 = ($fromX - $this->x) / 2;
+        $dy2 = ($fromY - $this->y) / 2;
+        $x1p = cos($xAngle) * $dx2 + sin($xAngle) * $dy2;
+        $y1p = -sin($xAngle) * $dx2 + cos($xAngle) * $dy2;
+
+        // F.6.5.2
+        $rxs = $rX ** 2;
+        $rys = $rY ** 2;
+        $x1ps = $x1p ** 2;
+        $y1ps = $y1p ** 2;
+        $cr = $x1ps / $rxs + $y1ps / $rys;
+
+        if ($cr > 1) {
+            $s = sqrt($cr);
+            $rX *= $s;
+            $rY *= $s;
+            $rxs = $rX ** 2;
+            $rys = $rY ** 2;
+        }
+
+        $dq = ($rxs * $y1ps + $rys * $x1ps);
+        $pq = ($rxs * $rys - $dq) / $dq;
+        $q = sqrt(max(0, $pq));
+
+        if ($this->largeArc === $this->sweep) {
+            $q = -$q;
+        }
+
+        $cxp = $q * $rX * $y1p / $rY;
+        $cyp = -$q * $rY * $x1p / $rX;
+
+        // F.6.5.3
+        $cx = cos($xAngle) * $cxp - sin($xAngle) * $cyp + ($fromX + $this->x) / 2;
+        $cy = sin($xAngle) * $cxp + cos($xAngle) * $cyp + ($fromY + $this->y) / 2;
+
+        // F.6.5.5
+        $theta = self::angle(1, 0, ($x1p - $cxp) / $rX, ($y1p - $cyp) / $rY);
+
+        // F.6.5.6
+        $delta = self::angle(($x1p - $cxp) / $rX, ($y1p - $cyp) / $rY, (-$x1p - $cxp) / $rX, (-$y1p - $cyp) / $rY);
+        $delta = fmod($delta, pi() * 2);
+
+        if (! $this->sweep) {
+            $delta -= 2 * pi();
+        }
+
+        return [$cx, $cy, $rX, $rY, $theta, $delta];
+    }
+
+    private static function angle(float $ux, float $uy, float $vx, float $vy) : float
+    {
+        // F.6.5.4
+        $dot = $ux * $vx + $uy * $vy;
+        $length = sqrt($ux ** 2 + $uy ** 2) * sqrt($vx ** 2 + $vy ** 2);
+        $angle = acos(min(1, max(-1, $dot / $length)));
+
+        if (($ux * $vy - $uy * $vx) < 0) {
+            return -$angle;
+        }
+
+        return $angle;
+    }
+
+    /**
+     * @return float[]
+     */
+    private static function point(
+        float $centerX,
+        float $centerY,
+        float $radiusX,
+        float $radiusY,
+        float $xAngle,
+        float $angle
+    ) : array {
+        return [
+            $centerX + $radiusX * cos($xAngle) * cos($angle) - $radiusY * sin($xAngle) * sin($angle),
+            $centerY + $radiusX * sin($xAngle) * cos($angle) + $radiusY * cos($xAngle) * sin($angle),
+        ];
+    }
+
+    /**
+     * @return float[]
+     */
+    private static function derivative(float $radiusX, float $radiusY, float $xAngle, float $angle) : array
+    {
+        return [
+            -$radiusX * cos($xAngle) * sin($angle) - $radiusY * sin($xAngle) * cos($angle),
+            -$radiusX * sin($xAngle) * sin($angle) + $radiusY * cos($xAngle) * cos($angle),
+        ];
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Path/Line.php

@@ -0,0 +1,41 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Path;
+
+final class Line implements OperationInterface
+{
+    /**
+     * @var float
+     */
+    private $x;
+
+    /**
+     * @var float
+     */
+    private $y;
+
+    public function __construct(float $x, float $y)
+    {
+        $this->x = $x;
+        $this->y = $y;
+    }
+
+    public function getX() : float
+    {
+        return $this->x;
+    }
+
+    public function getY() : float
+    {
+        return $this->y;
+    }
+
+    /**
+     * @return self
+     */
+    public function translate(float $x, float $y) : OperationInterface
+    {
+        return new self($this->x + $x, $this->y + $y);
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Path/Move.php

@@ -0,0 +1,41 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Path;
+
+final class Move implements OperationInterface
+{
+    /**
+     * @var float
+     */
+    private $x;
+
+    /**
+     * @var float
+     */
+    private $y;
+
+    public function __construct(float $x, float $y)
+    {
+        $this->x = $x;
+        $this->y = $y;
+    }
+
+    public function getX() : float
+    {
+        return $this->x;
+    }
+
+    public function getY() : float
+    {
+        return $this->y;
+    }
+
+    /**
+     * @return self
+     */
+    public function translate(float $x, float $y) : OperationInterface
+    {
+        return new self($this->x + $x, $this->y + $y);
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/Path/OperationInterface.php

@@ -0,0 +1,12 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Path;
+
+interface OperationInterface
+{
+    /**
+     * Translates the operation's coordinates.
+     */
+    public function translate(float $x, float $y) : self;
+}

vendor/bacon/bacon-qr-code/src/Renderer/Path/Path.php

@@ -0,0 +1,106 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\Path;
+
+use IteratorAggregate;
+use Traversable;
+
+/**
+ * Internal Representation of a vector path.
+ */
+final class Path implements IteratorAggregate
+{
+    /**
+     * @var OperationInterface[]
+     */
+    private $operations = [];
+
+    /**
+     * Moves the drawing operation to a certain position.
+     */
+    public function move(float $x, float $y) : self
+    {
+        $path = clone $this;
+        $path->operations[] = new Move($x, $y);
+        return $path;
+    }
+
+    /**
+     * Draws a line from the current position to another position.
+     */
+    public function line(float $x, float $y) : self
+    {
+        $path = clone $this;
+        $path->operations[] = new Line($x, $y);
+        return $path;
+    }
+
+    /**
+     * Draws an elliptic arc from the current position to another position.
+     */
+    public function ellipticArc(
+        float $xRadius,
+        float $yRadius,
+        float $xAxisRotation,
+        bool $largeArc,
+        bool $sweep,
+        float $x,
+        float $y
+    ) : self {
+        $path = clone $this;
+        $path->operations[] = new EllipticArc($xRadius, $yRadius, $xAxisRotation, $largeArc, $sweep, $x, $y);
+        return $path;
+    }
+
+    /**
+     * Draws a curve from the current position to another position.
+     */
+    public function curve(float $x1, float $y1, float $x2, float $y2, float $x3, float $y3) : self
+    {
+        $path = clone $this;
+        $path->operations[] = new Curve($x1, $y1, $x2, $y2, $x3, $y3);
+        return $path;
+    }
+
+    /**
+     * Closes a sub-path.
+     */
+    public function close() : self
+    {
+        $path = clone $this;
+        $path->operations[] = Close::instance();
+        return $path;
+    }
+
+    /**
+     * Appends another path to this one.
+     */
+    public function append(self $other) : self
+    {
+        $path = clone $this;
+        $path->operations = array_merge($this->operations, $other->operations);
+        return $path;
+    }
+
+    public function translate(float $x, float $y) : self
+    {
+        $path = new self();
+
+        foreach ($this->operations as $operation) {
+            $path->operations[] = $operation->translate($x, $y);
+        }
+
+        return $path;
+    }
+
+    /**
+     * @return OperationInterface[]|Traversable
+     */
+    public function getIterator() : Traversable
+    {
+        foreach ($this->operations as $operation) {
+            yield $operation;
+        }
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/PlainTextRenderer.php

@@ -0,0 +1,86 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer;
+
+use BaconQrCode\Encoder\QrCode;
+use BaconQrCode\Exception\InvalidArgumentException;
+
+final class PlainTextRenderer implements RendererInterface
+{
+    /**
+     * UTF-8 full block (U+2588)
+     */
+    private const FULL_BLOCK = "\xe2\x96\x88";
+
+    /**
+     * UTF-8 upper half block (U+2580)
+     */
+    private const UPPER_HALF_BLOCK = "\xe2\x96\x80";
+
+    /**
+     * UTF-8 lower half block (U+2584)
+     */
+    private const LOWER_HALF_BLOCK = "\xe2\x96\x84";
+
+    /**
+     * UTF-8 no-break space (U+00A0)
+     */
+    private const EMPTY_BLOCK = "\xc2\xa0";
+
+    /**
+     * @var int
+     */
+    private $margin;
+
+    public function __construct(int $margin = 2)
+    {
+        $this->margin = $margin;
+    }
+
+    /**
+     * @throws InvalidArgumentException if matrix width doesn't match height
+     */
+    public function render(QrCode $qrCode) : string
+    {
+        $matrix = $qrCode->getMatrix();
+        $matrixSize = $matrix->getWidth();
+
+        if ($matrixSize !== $matrix->getHeight()) {
+            throw new InvalidArgumentException('Matrix must have the same width and height');
+        }
+
+        $rows = $matrix->getArray()->toArray();
+
+        if (0 !== $matrixSize % 2) {
+            $rows[] = array_fill(0, $matrixSize, 0);
+        }
+
+        $horizontalMargin = str_repeat(self::EMPTY_BLOCK, $this->margin);
+        $result = str_repeat("\n", (int) ceil($this->margin / 2));
+
+        for ($i = 0; $i < $matrixSize; $i += 2) {
+            $result .= $horizontalMargin;
+
+            $upperRow = $rows[$i];
+            $lowerRow = $rows[$i + 1];
+
+            for ($j = 0; $j < $matrixSize; ++$j) {
+                $upperBit = $upperRow[$j];
+                $lowerBit = $lowerRow[$j];
+
+                if ($upperBit) {
+                    $result .= $lowerBit ? self::FULL_BLOCK : self::UPPER_HALF_BLOCK;
+                } else {
+                    $result .= $lowerBit ? self::LOWER_HALF_BLOCK : self::EMPTY_BLOCK;
+                }
+            }
+
+            $result .= $horizontalMargin . "\n";
+        }
+
+        $result .= str_repeat("\n", (int) ceil($this->margin / 2));
+
+        return $result;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/RendererInterface.php

@@ -0,0 +1,11 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer;
+
+use BaconQrCode\Encoder\QrCode;
+
+interface RendererInterface
+{
+    public function render(QrCode $qrCode) : string;
+}

vendor/bacon/bacon-qr-code/src/Renderer/RendererStyle/EyeFill.php

@@ -0,0 +1,74 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\RendererStyle;
+
+use BaconQrCode\Exception\RuntimeException;
+use BaconQrCode\Renderer\Color\ColorInterface;
+
+final class EyeFill
+{
+    /**
+     * @var ColorInterface|null
+     */
+    private $externalColor;
+
+    /**
+     * @var ColorInterface|null
+     */
+    private $internalColor;
+
+    /**
+     * @var self|null
+     */
+    private static $inherit;
+
+    public function __construct(?ColorInterface $externalColor, ?ColorInterface $internalColor)
+    {
+        $this->externalColor = $externalColor;
+        $this->internalColor = $internalColor;
+    }
+
+    public static function uniform(ColorInterface $color) : self
+    {
+        return new self($color, $color);
+    }
+
+    public static function inherit() : self
+    {
+        return self::$inherit ?: self::$inherit = new self(null, null);
+    }
+
+    public function inheritsBothColors() : bool
+    {
+        return null === $this->externalColor && null === $this->internalColor;
+    }
+
+    public function inheritsExternalColor() : bool
+    {
+        return null === $this->externalColor;
+    }
+
+    public function inheritsInternalColor() : bool
+    {
+        return null === $this->internalColor;
+    }
+
+    public function getExternalColor() : ColorInterface
+    {
+        if (null === $this->externalColor) {
+            throw new RuntimeException('External eye color inherits foreground color');
+        }
+
+        return $this->externalColor;
+    }
+
+    public function getInternalColor() : ColorInterface
+    {
+        if (null === $this->internalColor) {
+            throw new RuntimeException('Internal eye color inherits foreground color');
+        }
+
+        return $this->internalColor;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/RendererStyle/Fill.php

@@ -0,0 +1,168 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\RendererStyle;
+
+use BaconQrCode\Exception\RuntimeException;
+use BaconQrCode\Renderer\Color\ColorInterface;
+use BaconQrCode\Renderer\Color\Gray;
+
+final class Fill
+{
+    /**
+     * @var ColorInterface
+     */
+    private $backgroundColor;
+
+    /**
+     * @var ColorInterface|null
+     */
+    private $foregroundColor;
+
+    /**
+     * @var Gradient|null
+     */
+    private $foregroundGradient;
+
+    /**
+     * @var EyeFill
+     */
+    private $topLeftEyeFill;
+
+    /**
+     * @var EyeFill
+     */
+    private $topRightEyeFill;
+
+    /**
+     * @var EyeFill
+     */
+    private $bottomLeftEyeFill;
+
+    /**
+     * @var self|null
+     */
+    private static $default;
+
+    private function __construct(
+        ColorInterface $backgroundColor,
+        ?ColorInterface $foregroundColor,
+        ?Gradient $foregroundGradient,
+        EyeFill $topLeftEyeFill,
+        EyeFill $topRightEyeFill,
+        EyeFill $bottomLeftEyeFill
+    ) {
+        $this->backgroundColor = $backgroundColor;
+        $this->foregroundColor = $foregroundColor;
+        $this->foregroundGradient = $foregroundGradient;
+        $this->topLeftEyeFill = $topLeftEyeFill;
+        $this->topRightEyeFill = $topRightEyeFill;
+        $this->bottomLeftEyeFill = $bottomLeftEyeFill;
+    }
+
+    public static function default() : self
+    {
+        return self::$default ?: self::$default = self::uniformColor(new Gray(100), new Gray(0));
+    }
+
+    public static function withForegroundColor(
+        ColorInterface $backgroundColor,
+        ColorInterface $foregroundColor,
+        EyeFill $topLeftEyeFill,
+        EyeFill $topRightEyeFill,
+        EyeFill $bottomLeftEyeFill
+    ) : self {
+        return new self(
+            $backgroundColor,
+            $foregroundColor,
+            null,
+            $topLeftEyeFill,
+            $topRightEyeFill,
+            $bottomLeftEyeFill
+        );
+    }
+
+    public static function withForegroundGradient(
+        ColorInterface $backgroundColor,
+        Gradient $foregroundGradient,
+        EyeFill $topLeftEyeFill,
+        EyeFill $topRightEyeFill,
+        EyeFill $bottomLeftEyeFill
+    ) : self {
+        return new self(
+            $backgroundColor,
+            null,
+            $foregroundGradient,
+            $topLeftEyeFill,
+            $topRightEyeFill,
+            $bottomLeftEyeFill
+        );
+    }
+
+    public static function uniformColor(ColorInterface $backgroundColor, ColorInterface $foregroundColor) : self
+    {
+        return new self(
+            $backgroundColor,
+            $foregroundColor,
+            null,
+            EyeFill::inherit(),
+            EyeFill::inherit(),
+            EyeFill::inherit()
+        );
+    }
+
+    public static function uniformGradient(ColorInterface $backgroundColor, Gradient $foregroundGradient) : self
+    {
+        return new self(
+            $backgroundColor,
+            null,
+            $foregroundGradient,
+            EyeFill::inherit(),
+            EyeFill::inherit(),
+            EyeFill::inherit()
+        );
+    }
+
+    public function hasGradientFill() : bool
+    {
+        return null !== $this->foregroundGradient;
+    }
+
+    public function getBackgroundColor() : ColorInterface
+    {
+        return $this->backgroundColor;
+    }
+
+    public function getForegroundColor() : ColorInterface
+    {
+        if (null === $this->foregroundColor) {
+            throw new RuntimeException('Fill uses a gradient, thus no foreground color is available');
+        }
+
+        return $this->foregroundColor;
+    }
+
+    public function getForegroundGradient() : Gradient
+    {
+        if (null === $this->foregroundGradient) {
+            throw new RuntimeException('Fill uses a single color, thus no foreground gradient is available');
+        }
+
+        return $this->foregroundGradient;
+    }
+
+    public function getTopLeftEyeFill() : EyeFill
+    {
+        return $this->topLeftEyeFill;
+    }
+
+    public function getTopRightEyeFill() : EyeFill
+    {
+        return $this->topRightEyeFill;
+    }
+
+    public function getBottomLeftEyeFill() : EyeFill
+    {
+        return $this->bottomLeftEyeFill;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/RendererStyle/Gradient.php

@@ -0,0 +1,46 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\RendererStyle;
+
+use BaconQrCode\Renderer\Color\ColorInterface;
+
+final class Gradient
+{
+    /**
+     * @var ColorInterface
+     */
+    private $startColor;
+
+    /**
+     * @var ColorInterface
+     */
+    private $endColor;
+
+    /**
+     * @var GradientType
+     */
+    private $type;
+
+    public function __construct(ColorInterface $startColor, ColorInterface $endColor, GradientType $type)
+    {
+        $this->startColor = $startColor;
+        $this->endColor = $endColor;
+        $this->type = $type;
+    }
+
+    public function getStartColor() : ColorInterface
+    {
+        return $this->startColor;
+    }
+
+    public function getEndColor() : ColorInterface
+    {
+        return $this->endColor;
+    }
+
+    public function getType() : GradientType
+    {
+        return $this->type;
+    }
+}

vendor/bacon/bacon-qr-code/src/Renderer/RendererStyle/GradientType.php

@@ -0,0 +1,22 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\RendererStyle;
+
+use DASPRiD\Enum\AbstractEnum;
+
+/**
+ * @method static self VERTICAL()
+ * @method static self HORIZONTAL()
+ * @method static self DIAGONAL()
+ * @method static self INVERSE_DIAGONAL()
+ * @method static self RADIAL()
+ */
+final class GradientType extends AbstractEnum
+{
+    protected const VERTICAL = null;
+    protected const HORIZONTAL = null;
+    protected const DIAGONAL = null;
+    protected const INVERSE_DIAGONAL = null;
+    protected const RADIAL = null;
+}

vendor/bacon/bacon-qr-code/src/Renderer/RendererStyle/RendererStyle.php

@@ -0,0 +1,90 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode\Renderer\RendererStyle;
+
+use BaconQrCode\Renderer\Eye\EyeInterface;
+use BaconQrCode\Renderer\Eye\ModuleEye;
+use BaconQrCode\Renderer\Module\ModuleInterface;
+use BaconQrCode\Renderer\Module\SquareModule;
+
+final class RendererStyle
+{
+    /**
+     * @var int
+     */
+    private $size;
+
+    /**
+     * @var int
+     */
+    private $margin;
+
+    /**
+     * @var ModuleInterface
+     */
+    private $module;
+
+    /**
+     * @var EyeInterface|null
+     */
+    private $eye;
+
+    /**
+     * @var Fill
+     */
+    private $fill;
+
+    public function __construct(
+        int $size,
+        int $margin = 4,
+        ?ModuleInterface $module = null,
+        ?EyeInterface $eye = null,
+        ?Fill $fill = null
+    ) {
+        $this->margin = $margin;
+        $this->size = $size;
+        $this->module = $module ?: SquareModule::instance();
+        $this->eye = $eye ?: new ModuleEye($this->module);
+        $this->fill = $fill ?: Fill::default();
+    }
+
+    public function withSize(int $size) : self
+    {
+        $style = clone $this;
+        $style->size = $size;
+        return $style;
+    }
+
+    public function withMargin(int $margin) : self
+    {
+        $style = clone $this;
+        $style->margin = $margin;
+        return $style;
+    }
+
+    public function getSize() : int
+    {
+        return $this->size;
+    }
+
+    public function getMargin() : int
+    {
+        return $this->margin;
+    }
+
+    public function getModule() : ModuleInterface
+    {
+        return $this->module;
+    }
+
+    public function getEye() : EyeInterface
+    {
+        return $this->eye;
+    }
+
+    public function getFill() : Fill
+    {
+        return $this->fill;
+    }
+}

vendor/bacon/bacon-qr-code/src/Writer.php

@@ -0,0 +1,68 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCode;
+
+use BaconQrCode\Common\ErrorCorrectionLevel;
+use BaconQrCode\Encoder\Encoder;
+use BaconQrCode\Exception\InvalidArgumentException;
+use BaconQrCode\Renderer\RendererInterface;
+
+/**
+ * QR code writer.
+ */
+final class Writer
+{
+    /**
+     * Renderer instance.
+     *
+     * @var RendererInterface
+     */
+    private $renderer;
+
+    /**
+     * Creates a new writer with a specific renderer.
+     */
+    public function __construct(RendererInterface $renderer)
+    {
+        $this->renderer = $renderer;
+    }
+
+    /**
+     * Writes QR code and returns it as string.
+     *
+     * Content is a string which *should* be encoded in UTF-8, in case there are
+     * non ASCII-characters present.
+     *
+     * @throws InvalidArgumentException if the content is empty
+     */
+    public function writeString(
+        string $content,
+        string $encoding = Encoder::DEFAULT_BYTE_MODE_ECODING,
+        ?ErrorCorrectionLevel $ecLevel = null
+    ) : string {
+        if (strlen($content) === 0) {
+            throw new InvalidArgumentException('Found empty contents');
+        }
+
+        if (null === $ecLevel) {
+            $ecLevel = ErrorCorrectionLevel::L();
+        }
+
+        return $this->renderer->render(Encoder::encode($content, $ecLevel, $encoding));
+    }
+
+    /**
+     * Writes QR code to a file.
+     *
+     * @see Writer::writeString()
+     */
+    public function writeFile(
+        string $content,
+        string $filename,
+        string $encoding = Encoder::DEFAULT_BYTE_MODE_ECODING,
+        ?ErrorCorrectionLevel $ecLevel = null
+    ) : void {
+        file_put_contents($filename, $this->writeString($content, $encoding, $ecLevel));
+    }
+}

vendor/bacon/bacon-qr-code/test/Common/BitArrayTest.php

@@ -0,0 +1,222 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCodeTest\Common;
+
+use BaconQrCode\Common\BitArray;
+use PHPUnit\Framework\TestCase;
+use PHPUnit\Runner\Version as PHPUnitVersion;
+
+final class BitArrayTest extends TestCase
+{
+    private function getPhpUnitMajorVersion(): int
+    {
+        return (int) explode('.', PHPUnitVersion::id())[0];
+    }
+
+    public function testGetSet() : void
+    {
+        $array = new BitArray(33);
+
+        for ($i = 0; $i < 33; ++$i) {
+            $this->assertFalse($array->get($i));
+            $array->set($i);
+            $this->assertTrue($array->get($i));
+        }
+    }
+
+    public function testGetNextSet1() : void
+    {
+        $array = new BitArray(32);
+
+        for ($i = 0; $i < $array->getSize(); ++$i) {
+            if ($this->getPhpUnitMajorVersion() === 7) {
+                $this->assertEquals($i, 32, '', $array->getNextSet($i));
+            } else {
+                $this->assertEqualsWithDelta($i, 32, $array->getNextSet($i));
+            }
+        }
+
+        $array = new BitArray(33);
+
+        for ($i = 0; $i < $array->getSize(); ++$i) {
+            if ($this->getPhpUnitMajorVersion() === 7) {
+                $this->assertEquals($i, 33, '', $array->getNextSet($i));
+            } else {
+                $this->assertEqualsWithDelta($i, 33, $array->getNextSet($i));
+            }
+        }
+    }
+
+    public function testGetNextSet2() : void
+    {
+        $array = new BitArray(33);
+
+        for ($i = 0; $i < $array->getSize(); ++$i) {
+            if ($this->getPhpUnitMajorVersion() === 7) {
+                $this->assertEquals($i, $i <= 31 ? 31 : 33, '', $array->getNextSet($i));
+            } else {
+                $this->assertEqualsWithDelta($i, $i <= 31 ? 31 : 33, $array->getNextSet($i));
+            }
+        }
+
+        $array = new BitArray(33);
+
+        for ($i = 0; $i < $array->getSize(); ++$i) {
+            if ($this->getPhpUnitMajorVersion() === 7) {
+                $this->assertEquals($i, 32, '', $array->getNextSet($i));
+            } else {
+                $this->assertEqualsWithDelta($i, 32, $array->getNextSet($i));
+            }
+        }
+    }
+
+    public function testGetNextSet3() : void
+    {
+        $array = new BitArray(63);
+        $array->set(31);
+        $array->set(32);
+
+        for ($i = 0; $i < $array->getSize(); ++$i) {
+            if ($i <= 31) {
+                $expected = 31;
+            } elseif ($i <= 32) {
+                $expected = 32;
+            } else {
+                $expected = 63;
+            }
+
+            if ($this->getPhpUnitMajorVersion() === 7) {
+                $this->assertEquals($i, $expected, '', $array->getNextSet($i));
+            } else {
+                $this->assertEqualsWithDelta($i, $expected, $array->getNextSet($i));
+            }
+        }
+    }
+
+    public function testGetNextSet4() : void
+    {
+        $array = new BitArray(63);
+        $array->set(33);
+        $array->set(40);
+
+        for ($i = 0; $i < $array->getSize(); ++$i) {
+            if ($i <= 33) {
+                $expected = 33;
+            } elseif ($i <= 40) {
+                $expected = 40;
+            } else {
+                $expected = 63;
+            }
+
+            if ($this->getPhpUnitMajorVersion() === 7) {
+                $this->assertEquals($i, $expected, '', $array->getNextSet($i));
+            } else {
+                $this->assertEqualsWithDelta($i, $expected, $array->getNextSet($i));
+            }
+        }
+    }
+
+    public function testGetNextSet5() : void
+    {
+        mt_srand(0xdeadbeef, MT_RAND_PHP);
+
+        for ($i = 0; $i < 10; ++$i) {
+            $array = new BitArray(mt_rand(1, 100));
+            $numSet = mt_rand(0, 19);
+
+            for ($j = 0; $j < $numSet; ++$j) {
+                $array->set(mt_rand(0, $array->getSize() - 1));
+            }
+
+            $numQueries = mt_rand(0, 19);
+
+            for ($j = 0; $j < $numQueries; ++$j) {
+                $query = mt_rand(0, $array->getSize() - 1);
+                $expected = $query;
+
+                while ($expected < $array->getSize() && ! $array->get($expected)) {
+                    ++$expected;
+                }
+
+                $actual = $array->getNextSet($query);
+
+                if ($actual !== $expected) {
+                    $array->getNextSet($query);
+                }
+
+                $this->assertEquals($expected, $actual);
+            }
+        }
+    }
+
+    public function testSetBulk() : void
+    {
+        $array = new BitArray(64);
+        $array->setBulk(32, 0xFFFF0000);
+
+        for ($i = 0; $i < 48; ++$i) {
+            $this->assertFalse($array->get($i));
+        }
+
+        for ($i = 48; $i < 64; ++$i) {
+            $this->assertTrue($array->get($i));
+        }
+    }
+
+    public function testClear() : void
+    {
+        $array = new BitArray(32);
+
+        for ($i = 0; $i < 32; ++$i) {
+            $array->set($i);
+        }
+
+        $array->clear();
+
+        for ($i = 0; $i < 32; ++$i) {
+            $this->assertFalse($array->get($i));
+        }
+    }
+
+    public function testGetArray() : void
+    {
+        $array = new BitArray(64);
+        $array->set(0);
+        $array->set(63);
+
+        $ints = $array->getBitArray();
+
+        $this->assertSame(1, $ints[0]);
+        $this->assertSame(0x80000000, $ints[1]);
+    }
+
+    public function testIsRange() : void
+    {
+        $array = new BitArray(64);
+        $this->assertTrue($array->isRange(0, 64, false));
+        $this->assertFalse($array->isRange(0, 64, true));
+
+        $array->set(32);
+        $this->assertTrue($array->isRange(32, 33, true));
+
+        $array->set(31);
+        $this->assertTrue($array->isRange(31, 33, true));
+
+        $array->set(34);
+        $this->assertFalse($array->isRange(31, 35, true));
+
+        for ($i = 0; $i < 31; ++$i) {
+            $array->set($i);
+        }
+
+        $this->assertTrue($array->isRange(0, 33, true));
+
+        for ($i = 33; $i < 64; ++$i) {
+            $array->set($i);
+        }
+
+        $this->assertTrue($array->isRange(0, 64, true));
+        $this->assertFalse($array->isRange(0, 64, false));
+    }
+}

vendor/bacon/bacon-qr-code/test/Common/BitMatrixTest.php

@@ -0,0 +1,115 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCodeTest\Common;
+
+use BaconQrCode\Common\BitArray;
+use BaconQrCode\Common\BitMatrix;
+use PHPUnit\Framework\TestCase;
+
+class BitMatrixTest extends TestCase
+{
+    public function testGetSet() : void
+    {
+        $matrix = new BitMatrix(33);
+        $this->assertEquals(33, $matrix->getHeight());
+
+        for ($y = 0; $y < 33; ++$y) {
+            for ($x = 0; $x < 33; ++$x) {
+                if ($y * $x % 3 === 0) {
+                    $matrix->set($x, $y);
+                }
+            }
+        }
+
+        for ($y = 0; $y < 33; $y++) {
+            for ($x = 0; $x < 33; ++$x) {
+                $this->assertSame(0 === $x * $y % 3, $matrix->get($x, $y));
+            }
+        }
+    }
+
+    public function testSetRegion() : void
+    {
+        $matrix = new BitMatrix(5);
+        $matrix->setRegion(1, 1, 3, 3);
+
+        for ($y = 0; $y < 5; ++$y) {
+            for ($x = 0; $x < 5; ++$x) {
+                $this->assertSame($y >= 1 && $y <= 3 && $x >= 1 && $x <= 3, $matrix->get($x, $y));
+            }
+        }
+    }
+
+    public function testRectangularMatrix() : void
+    {
+        $matrix = new BitMatrix(75, 20);
+        $this->assertSame(75, $matrix->getWidth());
+        $this->assertSame(20, $matrix->getHeight());
+
+        $matrix->set(10, 0);
+        $matrix->set(11, 1);
+        $matrix->set(50, 2);
+        $matrix->set(51, 3);
+        $matrix->flip(74, 4);
+        $matrix->flip(0, 5);
+
+        $this->assertTrue($matrix->get(10, 0));
+        $this->assertTrue($matrix->get(11, 1));
+        $this->assertTrue($matrix->get(50, 2));
+        $this->assertTrue($matrix->get(51, 3));
+        $this->assertTrue($matrix->get(74, 4));
+        $this->assertTrue($matrix->get(0, 5));
+
+        $matrix->flip(50, 2);
+        $matrix->flip(51, 3);
+
+        $this->assertFalse($matrix->get(50, 2));
+        $this->assertFalse($matrix->get(51, 3));
+    }
+
+    public function testRectangularSetRegion() : void
+    {
+        $matrix = new BitMatrix(320, 240);
+        $this->assertSame(320, $matrix->getWidth());
+        $this->assertSame(240, $matrix->getHeight());
+
+        $matrix->setRegion(105, 22, 80, 12);
+
+        for ($y = 0; $y < 240; ++$y) {
+            for ($x = 0; $x < 320; ++$x) {
+                $this->assertEquals($y >= 22 && $y < 34 && $x >= 105 && $x < 185, $matrix->get($x, $y));
+            }
+        }
+    }
+
+    public function testGetRow() : void
+    {
+        $matrix = new BitMatrix(102, 5);
+
+        for ($x = 0; $x < 102; ++$x) {
+            if (0 === ($x & 3)) {
+                $matrix->set($x, 2);
+            }
+        }
+
+        $array1 = $matrix->getRow(2, null);
+        $this->assertSame(102, $array1->getSize());
+
+        $array2 = new BitArray(60);
+        $array2 = $matrix->getRow(2, $array2);
+        $this->assertSame(102, $array2->getSize());
+
+        $array3 = new BitArray(200);
+        $array3 = $matrix->getRow(2, $array3);
+        $this->assertSame(200, $array3->getSize());
+
+        for ($x = 0; $x < 102; ++$x) {
+            $on = (0 === ($x & 3));
+
+            $this->assertSame($on, $array1->get($x));
+            $this->assertSame($on, $array2->get($x));
+            $this->assertSame($on, $array3->get($x));
+        }
+    }
+}

vendor/bacon/bacon-qr-code/test/Common/BitUtilsTest.php

@@ -0,0 +1,25 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCodeTest\Common;
+
+use BaconQrCode\Common\BitUtils;
+use PHPUnit\Framework\TestCase;
+
+class BitUtilsTest extends TestCase
+{
+    public function testUnsignedRightShift() : void
+    {
+        $this->assertSame(1, BitUtils::unsignedRightShift(1, 0));
+        $this->assertSame(1, BitUtils::unsignedRightShift(10, 3));
+        $this->assertSame(536870910, BitUtils::unsignedRightShift(-10, 3));
+    }
+
+    public function testNumberOfTrailingZeros() : void
+    {
+        $this->assertSame(32, BitUtils::numberOfTrailingZeros(0));
+        $this->assertSame(1, BitUtils::numberOfTrailingZeros(10));
+        $this->assertSame(0, BitUtils::numberOfTrailingZeros(15));
+        $this->assertSame(2, BitUtils::numberOfTrailingZeros(20));
+    }
+}

vendor/bacon/bacon-qr-code/test/Common/ErrorCorrectionLevelTest.php

@@ -0,0 +1,25 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCodeTest\Common;
+
+use BaconQrCode\Common\ErrorCorrectionLevel;
+use BaconQrCode\Exception\OutOfBoundsException;
+use PHPUnit\Framework\TestCase;
+
+class ErrorCorrectionLevelTest extends TestCase
+{
+    public function testBitsMatchConstants() : void
+    {
+        $this->assertSame(0x0, ErrorCorrectionLevel::M()->getBits());
+        $this->assertSame(0x1, ErrorCorrectionLevel::L()->getBits());
+        $this->assertSame(0x2, ErrorCorrectionLevel::H()->getBits());
+        $this->assertSame(0x3, ErrorCorrectionLevel::Q()->getBits());
+    }
+
+    public function testInvalidErrorCorrectionLevelThrowsException() : void
+    {
+        $this->expectException(OutOfBoundsException::class);
+        ErrorCorrectionLevel::forBits(4);
+    }
+}

vendor/bacon/bacon-qr-code/test/Common/FormatInformationTest.php

@@ -0,0 +1,94 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCodeTest\Common;
+
+use BaconQrCode\Common\ErrorCorrectionLevel;
+use BaconQrCode\Common\FormatInformation;
+use PHPUnit\Framework\TestCase;
+
+class FormatInformationTest extends TestCase
+{
+    private const MASKED_TEST_FORMAT_INFO = 0x2bed;
+    private const UNMAKSED_TEST_FORMAT_INFO = self::MASKED_TEST_FORMAT_INFO ^ 0x5412;
+
+    public function testBitsDiffering() : void
+    {
+        $this->assertSame(0, FormatInformation::numBitsDiffering(1, 1));
+        $this->assertSame(1, FormatInformation::numBitsDiffering(0, 2));
+        $this->assertSame(2, FormatInformation::numBitsDiffering(1, 2));
+        $this->assertEquals(32, FormatInformation::numBitsDiffering(-1, 0));
+    }
+
+    public function testDecode() : void
+    {
+        $expected = FormatInformation::decodeFormatInformation(
+            self::MASKED_TEST_FORMAT_INFO,
+            self::MASKED_TEST_FORMAT_INFO
+        );
+
+        $this->assertNotNull($expected);
+        $this->assertSame(7, $expected->getDataMask());
+        $this->assertSame(ErrorCorrectionLevel::Q(), $expected->getErrorCorrectionLevel());
+
+        $this->assertEquals(
+            $expected,
+            FormatInformation::decodeFormatInformation(
+                self::UNMAKSED_TEST_FORMAT_INFO,
+                self::MASKED_TEST_FORMAT_INFO
+            )
+        );
+    }
+
+    public function testDecodeWithBitDifference() : void
+    {
+        $expected = FormatInformation::decodeFormatInformation(
+            self::MASKED_TEST_FORMAT_INFO,
+            self::MASKED_TEST_FORMAT_INFO
+        );
+
+        $this->assertEquals(
+            $expected,
+            FormatInformation::decodeFormatInformation(
+                self::MASKED_TEST_FORMAT_INFO ^ 0x1,
+                self::MASKED_TEST_FORMAT_INFO ^ 0x1
+            )
+        );
+        $this->assertEquals(
+            $expected,
+            FormatInformation::decodeFormatInformation(
+                self::MASKED_TEST_FORMAT_INFO ^ 0x3,
+                self::MASKED_TEST_FORMAT_INFO ^ 0x3
+            )
+        );
+        $this->assertEquals(
+            $expected,
+            FormatInformation::decodeFormatInformation(
+                self::MASKED_TEST_FORMAT_INFO ^ 0x7,
+                self::MASKED_TEST_FORMAT_INFO ^ 0x7
+            )
+        );
+        $this->assertNull(
+            FormatInformation::decodeFormatInformation(
+                self::MASKED_TEST_FORMAT_INFO ^ 0xf,
+                self::MASKED_TEST_FORMAT_INFO ^ 0xf
+            )
+        );
+    }
+
+    public function testDecodeWithMisRead() : void
+    {
+        $expected = FormatInformation::decodeFormatInformation(
+            self::MASKED_TEST_FORMAT_INFO,
+            self::MASKED_TEST_FORMAT_INFO
+        );
+
+        $this->assertEquals(
+            $expected,
+            FormatInformation::decodeFormatInformation(
+                self::MASKED_TEST_FORMAT_INFO ^ 0x3,
+                self::MASKED_TEST_FORMAT_INFO ^ 0xf
+            )
+        );
+    }
+}

vendor/bacon/bacon-qr-code/test/Common/ModeTest.php

@@ -0,0 +1,19 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCodeTest\Common;
+
+use BaconQrCode\Common\Mode;
+use PHPUnit\Framework\TestCase;
+
+class ModeTest extends TestCase
+{
+    public function testBitsMatchConstants() : void
+    {
+        $this->assertSame(0x0, Mode::TERMINATOR()->getBits());
+        $this->assertSame(0x1, Mode::NUMERIC()->getBits());
+        $this->assertSame(0x2, Mode::ALPHANUMERIC()->getBits());
+        $this->assertSame(0x4, Mode::BYTE()->getBits());
+        $this->assertSame(0x8, Mode::KANJI()->getBits());
+    }
+}

vendor/bacon/bacon-qr-code/test/Common/ReedSolomonCodecTest.php

@@ -0,0 +1,96 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCodeTest\Common;
+
+use BaconQrCode\Common\ReedSolomonCodec;
+use PHPUnit\Framework\TestCase;
+use SplFixedArray;
+
+class ReedSolomonTest extends TestCase
+{
+    public function tabs() : array
+    {
+        return [
+            [2, 0x7, 1, 1, 1],
+            [3, 0xb, 1, 1, 2],
+            [4, 0x13, 1, 1, 4],
+            [5, 0x25, 1, 1, 6],
+            [6, 0x43, 1, 1, 8],
+            [7, 0x89, 1, 1, 10],
+            [8, 0x11d, 1, 1, 32],
+        ];
+    }
+
+    /**
+     * @dataProvider tabs
+     */
+    public function testCodec(int $symbolSize, int $generatorPoly, int $firstRoot, int $primitive, int $numRoots) : void
+    {
+        mt_srand(0xdeadbeef, MT_RAND_PHP);
+
+        $blockSize = (1 << $symbolSize) - 1;
+        $dataSize  = $blockSize - $numRoots;
+        $codec     = new ReedSolomonCodec($symbolSize, $generatorPoly, $firstRoot, $primitive, $numRoots, 0);
+
+        for ($errors = 0; $errors <= $numRoots / 2; ++$errors) {
+            // Load block with random data and encode
+            $block = SplFixedArray::fromArray(array_fill(0, $blockSize, 0), false);
+
+            for ($i = 0; $i < $dataSize; ++$i) {
+                $block[$i] = mt_rand(0, $blockSize);
+            }
+
+            // Make temporary copy
+            $tBlock = clone $block;
+            $parity = SplFixedArray::fromArray(array_fill(0, $numRoots, 0), false);
+            $errorLocations = SplFixedArray::fromArray(array_fill(0, $blockSize, 0), false);
+            $erasures = [];
+
+            // Create parity
+            $codec->encode($block, $parity);
+
+            // Copy parity into test blocks
+            for ($i = 0; $i < $numRoots; ++$i) {
+                $block[$i + $dataSize] = $parity[$i];
+                $tBlock[$i + $dataSize] = $parity[$i];
+            }
+
+            // Seed with errors
+            for ($i = 0; $i < $errors; ++$i) {
+                $errorValue = mt_rand(1, $blockSize);
+
+                do {
+                    $errorLocation = mt_rand(0, $blockSize);
+                } while (0 !== $errorLocations[$errorLocation]);
+
+                $errorLocations[$errorLocation] = 1;
+
+                if (mt_rand(0, 1)) {
+                    $erasures[] = $errorLocation;
+                }
+
+                $tBlock[$errorLocation] ^= $errorValue;
+            }
+
+            $erasures = SplFixedArray::fromArray($erasures, false);
+
+            // Decode the errored block
+            $foundErrors = $codec->decode($tBlock, $erasures);
+
+            if ($errors > 0 && null === $foundErrors) {
+                $this->assertSame($block, $tBlock, 'Decoder failed to correct errors');
+            }
+
+            $this->assertSame($errors, $foundErrors, 'Found errors do not equal expected errors');
+
+            for ($i = 0; $i < $foundErrors; ++$i) {
+                if (0 === $errorLocations[$erasures[$i]]) {
+                    $this->fail(sprintf('Decoder indicates error in location %d without error', $erasures[$i]));
+                }
+            }
+
+            $this->assertEquals($block, $tBlock, 'Decoder did not correct errors');
+        }
+    }
+}

vendor/bacon/bacon-qr-code/test/Common/VersionTest.php

@@ -0,0 +1,78 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCodeTest\Common;
+
+use BaconQrCode\Common\ErrorCorrectionLevel;
+use BaconQrCode\Common\Version;
+use PHPUnit\Framework\TestCase;
+
+class VersionTest extends TestCase
+{
+    public function versions() : array
+    {
+        $array = [];
+
+        for ($i = 1; $i <= 40; ++$i) {
+            $array[] = [$i, 4 * $i + 17];
+        }
+
+        return $array;
+    }
+
+    public function decodeInformation() : array
+    {
+        return [
+            [7, 0x07c94],
+            [12, 0x0c762],
+            [17, 0x1145d],
+            [22, 0x168c9],
+            [27, 0x1b08e],
+            [32, 0x209d5],
+        ];
+    }
+
+    /**
+     * @dataProvider versions
+     */
+    public function testVersionForNumber(int $versionNumber, int $dimension) : void
+    {
+        $version = Version::getVersionForNumber($versionNumber);
+
+        $this->assertNotNull($version);
+        $this->assertEquals($versionNumber, $version->getVersionNumber());
+        $this->assertNotNull($version->getAlignmentPatternCenters());
+
+        if ($versionNumber > 1) {
+            $this->assertTrue(count($version->getAlignmentPatternCenters()) > 0);
+        }
+
+        $this->assertEquals($dimension, $version->getDimensionForVersion());
+        $this->assertNotNull($version->getEcBlocksForLevel(ErrorCorrectionLevel::H()));
+        $this->assertNotNull($version->getEcBlocksForLevel(ErrorCorrectionLevel::L()));
+        $this->assertNotNull($version->getEcBlocksForLevel(ErrorCorrectionLevel::M()));
+        $this->assertNotNull($version->getEcBlocksForLevel(ErrorCorrectionLevel::Q()));
+        $this->assertNotNull($version->buildFunctionPattern());
+    }
+
+    /**
+     * @dataProvider versions
+     */
+    public function testGetProvisionalVersionForDimension(int $versionNumber, int $dimension) : void
+    {
+        $this->assertSame(
+            $versionNumber,
+            Version::getProvisionalVersionForDimension($dimension)->getVersionNumber()
+        );
+    }
+
+    /**
+     * @dataProvider decodeInformation
+     */
+    public function testDecodeVersionInformation(int $expectedVersion, int $mask) : void
+    {
+        $version = Version::decodeVersionInformation($mask);
+        $this->assertNotNull($version);
+        $this->assertSame($expectedVersion, $version->getVersionNumber());
+    }
+}

vendor/bacon/bacon-qr-code/test/Encoder/EncoderTest.php

@@ -0,0 +1,487 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCodeTest\Encoder;
+
+use BaconQrCode\Common\BitArray;
+use BaconQrCode\Common\ErrorCorrectionLevel;
+use BaconQrCode\Common\Mode;
+use BaconQrCode\Common\Version;
+use BaconQrCode\Encoder\Encoder;
+use BaconQrCode\Exception\WriterException;
+use PHPUnit\Framework\TestCase;
+use ReflectionClass;
+use ReflectionMethod;
+use SplFixedArray;
+
+final class EncoderTest extends TestCase
+{
+    /**
+     * @var ReflectionMethod[]
+     */
+    protected $methods = [];
+
+    public function setUp() : void
+    {
+        // Hack to be able to test protected methods
+        $reflection = new ReflectionClass(Encoder::class);
+
+        foreach ($reflection->getMethods(ReflectionMethod::IS_STATIC) as $method) {
+            $method->setAccessible(true);
+            $this->methods[$method->getName()] = $method;
+        }
+    }
+
+    public function testGetAlphanumericCode() : void
+    {
+        // The first ten code points are numbers.
+        for ($i = 0; $i < 10; ++$i) {
+            $this->assertSame($i, $this->methods['getAlphanumericCode']->invoke(null, ord('0') + $i));
+        }
+
+        // The next 26 code points are capital alphabet letters.
+        for ($i = 10; $i < 36; ++$i) {
+            // The first ten code points are numbers
+            $this->assertSame($i, $this->methods['getAlphanumericCode']->invoke(null, ord('A') + $i - 10));
+        }
+
+        // Others are symbol letters.
+        $this->assertSame(36, $this->methods['getAlphanumericCode']->invoke(null, ord(' ')));
+        $this->assertSame(37, $this->methods['getAlphanumericCode']->invoke(null, ord('$')));
+        $this->assertSame(38, $this->methods['getAlphanumericCode']->invoke(null, ord('%')));
+        $this->assertSame(39, $this->methods['getAlphanumericCode']->invoke(null, ord('*')));
+        $this->assertSame(40, $this->methods['getAlphanumericCode']->invoke(null, ord('+')));
+        $this->assertSame(41, $this->methods['getAlphanumericCode']->invoke(null, ord('-')));
+        $this->assertSame(42, $this->methods['getAlphanumericCode']->invoke(null, ord('.')));
+        $this->assertSame(43, $this->methods['getAlphanumericCode']->invoke(null, ord('/')));
+        $this->assertSame(44, $this->methods['getAlphanumericCode']->invoke(null, ord(':')));
+
+        // Should return -1 for other letters.
+        $this->assertSame(-1, $this->methods['getAlphanumericCode']->invoke(null, ord('a')));
+        $this->assertSame(-1, $this->methods['getAlphanumericCode']->invoke(null, ord('#')));
+        $this->assertSame(-1, $this->methods['getAlphanumericCode']->invoke(null, ord("\0")));
+    }
+
+    public function testChooseMode() : void
+    {
+        // Numeric mode
+        $this->assertSame(Mode::NUMERIC(), $this->methods['chooseMode']->invoke(null, '0'));
+        $this->assertSame(Mode::NUMERIC(), $this->methods['chooseMode']->invoke(null, '0123456789'));
+
+        // Alphanumeric mode
+        $this->assertSame(Mode::ALPHANUMERIC(), $this->methods['chooseMode']->invoke(null, 'A'));
+        $this->assertSame(
+            Mode::ALPHANUMERIC(),
+            $this->methods['chooseMode']->invoke(null, '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:')
+        );
+
+        // 8-bit byte mode
+        $this->assertSame(Mode::BYTE(), $this->methods['chooseMode']->invoke(null, 'a'));
+        $this->assertSame(Mode::BYTE(), $this->methods['chooseMode']->invoke(null, '#'));
+        $this->assertSame(Mode::BYTE(), $this->methods['chooseMode']->invoke(null, ''));
+
+        // AIUE in Hiragana in SHIFT-JIS
+        $this->assertSame(Mode::BYTE(), $this->methods['chooseMode']->invoke(null, "\x8\xa\x8\xa\x8\xa\x8\xa6"));
+
+        // Nihon in Kanji in SHIFT-JIS
+        $this->assertSame(Mode::BYTE(), $this->methods['chooseMode']->invoke(null, "\x9\xf\x9\x7b"));
+
+        // Sou-Utso-Byou in Kanji in SHIFT-JIS
+        $this->assertSame(Mode::BYTE(), $this->methods['chooseMode']->invoke(null, "\xe\x4\x9\x5\x9\x61"));
+    }
+
+    public function testEncode() : void
+    {
+        $qrCode = Encoder::encode('ABCDEF', ErrorCorrectionLevel::H());
+        $expected = "<<\n"
+            . " mode: ALPHANUMERIC\n"
+            . " ecLevel: H\n"
+            . " version: 1\n"
+            . " maskPattern: 0\n"
+            . " matrix:\n"
+            . " 1 1 1 1 1 1 1 0 1 1 1 1 0 0 1 1 1 1 1 1 1\n"
+            . " 1 0 0 0 0 0 1 0 0 1 1 1 0 0 1 0 0 0 0 0 1\n"
+            . " 1 0 1 1 1 0 1 0 0 1 0 1 1 0 1 0 1 1 1 0 1\n"
+            . " 1 0 1 1 1 0 1 0 1 1 1 0 1 0 1 0 1 1 1 0 1\n"
+            . " 1 0 1 1 1 0 1 0 0 1 1 1 0 0 1 0 1 1 1 0 1\n"
+            . " 1 0 0 0 0 0 1 0 0 1 0 0 0 0 1 0 0 0 0 0 1\n"
+            . " 1 1 1 1 1 1 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1\n"
+            . " 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0\n"
+            . " 0 0 1 0 1 1 1 0 1 1 0 0 1 1 0 0 0 1 0 0 1\n"
+            . " 1 0 1 1 1 0 0 1 0 0 0 1 0 1 0 0 0 0 0 0 0\n"
+            . " 0 0 1 1 0 0 1 0 1 0 0 0 1 0 1 0 1 0 1 1 0\n"
+            . " 1 1 0 1 0 1 0 1 1 1 0 1 0 1 0 0 0 0 0 1 0\n"
+            . " 0 0 1 1 0 1 1 1 1 0 0 0 1 0 1 0 1 1 1 1 0\n"
+            . " 0 0 0 0 0 0 0 0 1 0 0 1 1 1 0 1 0 1 0 0 0\n"
+            . " 1 1 1 1 1 1 1 0 0 0 1 0 1 0 1 1 0 0 0 0 1\n"
+            . " 1 0 0 0 0 0 1 0 1 1 1 1 0 1 0 1 1 1 1 0 1\n"
+            . " 1 0 1 1 1 0 1 0 1 0 1 1 0 1 0 1 0 0 0 0 1\n"
+            . " 1 0 1 1 1 0 1 0 0 1 1 0 1 1 1 1 0 1 0 1 0\n"
+            . " 1 0 1 1 1 0 1 0 1 0 0 0 1 0 1 0 1 1 1 0 1\n"
+            . " 1 0 0 0 0 0 1 0 0 1 1 0 1 1 0 1 0 0 0 1 1\n"
+            . " 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 1 0 1 0 1\n"
+            . ">>\n";
+
+        $this->assertSame($expected, (string) $qrCode);
+    }
+
+    public function testSimpleUtf8Eci() : void
+    {
+        $qrCode = Encoder::encode('hello', ErrorCorrectionLevel::H(), 'utf-8');
+        $expected = "<<\n"
+            . " mode: BYTE\n"
+            . " ecLevel: H\n"
+            . " version: 1\n"
+            . " maskPattern: 3\n"
+            . " matrix:\n"
+            . " 1 1 1 1 1 1 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1\n"
+            . " 1 0 0 0 0 0 1 0 0 0 1 0 1 0 1 0 0 0 0 0 1\n"
+            . " 1 0 1 1 1 0 1 0 0 1 0 1 0 0 1 0 1 1 1 0 1\n"
+            . " 1 0 1 1 1 0 1 0 0 1 1 0 1 0 1 0 1 1 1 0 1\n"
+            . " 1 0 1 1 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1 0 1\n"
+            . " 1 0 0 0 0 0 1 0 0 0 0 0 1 0 1 0 0 0 0 0 1\n"
+            . " 1 1 1 1 1 1 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1\n"
+            . " 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0\n"
+            . " 0 0 1 1 0 0 1 1 1 1 0 0 0 1 1 0 1 0 0 0 0\n"
+            . " 0 0 1 1 1 0 0 0 0 0 1 1 0 0 0 1 0 1 1 1 0\n"
+            . " 0 1 0 1 0 1 1 1 0 1 0 1 0 0 0 0 0 1 1 1 1\n"
+            . " 1 1 0 0 1 0 0 1 1 0 0 1 1 1 1 0 1 0 1 1 0\n"
+            . " 0 0 0 0 1 0 1 1 1 1 0 0 0 0 0 1 0 0 1 0 0\n"
+            . " 0 0 0 0 0 0 0 0 1 1 1 1 0 0 1 1 1 0 0 0 1\n"
+            . " 1 1 1 1 1 1 1 0 1 1 1 0 1 0 1 1 0 0 1 0 0\n"
+            . " 1 0 0 0 0 0 1 0 0 0 1 0 0 1 1 1 1 1 1 0 1\n"
+            . " 1 0 1 1 1 0 1 0 0 1 0 0 0 0 1 1 0 0 0 0 0\n"
+            . " 1 0 1 1 1 0 1 0 1 1 1 0 1 0 0 0 1 1 0 0 0\n"
+            . " 1 0 1 1 1 0 1 0 1 1 0 0 0 1 0 0 1 0 0 0 0\n"
+            . " 1 0 0 0 0 0 1 0 0 0 0 1 1 0 1 0 1 0 1 1 0\n"
+            . " 1 1 1 1 1 1 1 0 0 1 0 1 1 1 0 1 1 0 0 0 0\n"
+            . ">>\n";
+
+        $this->assertSame($expected, (string) $qrCode);
+    }
+
+    public function testAppendModeInfo() : void
+    {
+        $bits = new BitArray();
+        $this->methods['appendModeInfo']->invoke(null, Mode::NUMERIC(), $bits);
+        $this->assertSame(' ...X', (string) $bits);
+    }
+
+    public function testAppendLengthInfo() : void
+    {
+        // 1 letter (1/1), 10 bits.
+        $bits = new BitArray();
+        $this->methods['appendLengthInfo']->invoke(
+            null,
+            1,
+            Version::getVersionForNumber(1),
+            Mode::NUMERIC(),
+            $bits
+        );
+        $this->assertSame(' ........ .X', (string) $bits);
+
+        // 2 letters (2/1), 11 bits.
+        $bits = new BitArray();
+        $this->methods['appendLengthInfo']->invoke(
+            null,
+            2,
+            Version::getVersionForNumber(10),
+            Mode::ALPHANUMERIC(),
+            $bits
+        );
+        $this->assertSame(' ........ .X.', (string) $bits);
+
+        // 255 letters (255/1), 16 bits.
+        $bits = new BitArray();
+        $this->methods['appendLengthInfo']->invoke(
+            null,
+            255,
+            Version::getVersionForNumber(27),
+            Mode::BYTE(),
+            $bits
+        );
+        $this->assertSame(' ........ XXXXXXXX', (string) $bits);
+
+        // 512 letters (1024/2), 12 bits.
+        $bits = new BitArray();
+        $this->methods['appendLengthInfo']->invoke(
+            null,
+            512,
+            Version::getVersionForNumber(40),
+            Mode::KANJI(),
+            $bits
+        );
+        $this->assertSame(' ..X..... ....', (string) $bits);
+    }
+
+    public function testAppendBytes() : void
+    {
+        // Should use appendNumericBytes.
+        // 1 = 01 = 0001 in 4 bits.
+        $bits = new BitArray();
+        $this->methods['appendBytes']->invoke(
+            null,
+            '1',
+            Mode::NUMERIC(),
+            $bits,
+            Encoder::DEFAULT_BYTE_MODE_ECODING
+        );
+        $this->assertSame(' ...X', (string) $bits);
+
+        // Should use appendAlphaNumericBytes.
+        // A = 10 = 0xa = 001010 in 6 bits.
+        $bits = new BitArray();
+        $this->methods['appendBytes']->invoke(
+            null,
+            'A',
+            Mode::ALPHANUMERIC(),
+            $bits,
+            Encoder::DEFAULT_BYTE_MODE_ECODING
+        );
+        $this->assertSame(' ..X.X.', (string) $bits);
+
+        // Should use append8BitBytes.
+        // 0x61, 0x62, 0x63
+        $bits = new BitArray();
+        $this->methods['appendBytes']->invoke(
+            null,
+            'abc',
+            Mode::BYTE(),
+            $bits,
+            Encoder::DEFAULT_BYTE_MODE_ECODING
+        );
+        $this->assertSame(' .XX....X .XX...X. .XX...XX', (string) $bits);
+
+        // Should use appendKanjiBytes.
+        // 0x93, 0x5f
+        $bits = new BitArray();
+        $this->methods['appendBytes']->invoke(
+            null,
+            "\x93\x5f",
+            Mode::KANJI(),
+            $bits,
+            Encoder::DEFAULT_BYTE_MODE_ECODING
+        );
+        $this->assertSame(' .XX.XX.. XXXXX', (string) $bits);
+
+        // Lower letters such as 'a' cannot be encoded in alphanumeric mode.
+        $this->expectException(WriterException::class);
+        $this->methods['appendBytes']->invoke(
+            null,
+            'a',
+            Mode::ALPHANUMERIC(),
+            $bits,
+            Encoder::DEFAULT_BYTE_MODE_ECODING
+        );
+    }
+
+    public function testTerminateBits() : void
+    {
+        $bits = new BitArray();
+        $this->methods['terminateBits']->invoke(null, 0, $bits);
+        $this->assertSame('', (string) $bits);
+
+        $bits = new BitArray();
+        $this->methods['terminateBits']->invoke(null, 1, $bits);
+        $this->assertSame(' ........', (string) $bits);
+
+        $bits = new BitArray();
+        $bits->appendBits(0, 3);
+        $this->methods['terminateBits']->invoke(null, 1, $bits);
+        $this->assertSame(' ........', (string) $bits);
+
+        $bits = new BitArray();
+        $bits->appendBits(0, 5);
+        $this->methods['terminateBits']->invoke(null, 1, $bits);
+        $this->assertSame(' ........', (string) $bits);
+
+        $bits = new BitArray();
+        $bits->appendBits(0, 8);
+        $this->methods['terminateBits']->invoke(null, 1, $bits);
+        $this->assertSame(' ........', (string) $bits);
+
+        $bits = new BitArray();
+        $this->methods['terminateBits']->invoke(null, 2, $bits);
+        $this->assertSame(' ........ XXX.XX..', (string) $bits);
+
+        $bits = new BitArray();
+        $bits->appendBits(0, 1);
+        $this->methods['terminateBits']->invoke(null, 3, $bits);
+        $this->assertSame(' ........ XXX.XX.. ...X...X', (string) $bits);
+    }
+
+    public function testGetNumDataBytesAndNumEcBytesForBlockId() : void
+    {
+        // Version 1-H.
+        list($numDataBytes, $numEcBytes) = $this->methods['getNumDataBytesAndNumEcBytesForBlockId']
+            ->invoke(null, 26, 9, 1, 0);
+        $this->assertSame(9, $numDataBytes);
+        $this->assertSame(17, $numEcBytes);
+
+        // Version 3-H.  2 blocks.
+        list($numDataBytes, $numEcBytes) = $this->methods['getNumDataBytesAndNumEcBytesForBlockId']
+            ->invoke(null, 70, 26, 2, 0);
+        $this->assertSame(13, $numDataBytes);
+        $this->assertSame(22, $numEcBytes);
+        list($numDataBytes, $numEcBytes) = $this->methods['getNumDataBytesAndNumEcBytesForBlockId']
+            ->invoke(null, 70, 26, 2, 1);
+        $this->assertSame(13, $numDataBytes);
+        $this->assertSame(22, $numEcBytes);
+
+        // Version 7-H. (4 + 1) blocks.
+        list($numDataBytes, $numEcBytes) = $this->methods['getNumDataBytesAndNumEcBytesForBlockId']
+            ->invoke(null, 196, 66, 5, 0);
+        $this->assertSame(13, $numDataBytes);
+        $this->assertSame(26, $numEcBytes);
+        list($numDataBytes, $numEcBytes) = $this->methods['getNumDataBytesAndNumEcBytesForBlockId']
+            ->invoke(null, 196, 66, 5, 4);
+        $this->assertSame(14, $numDataBytes);
+        $this->assertSame(26, $numEcBytes);
+
+        // Version 40-H. (20 + 61) blocks.
+        list($numDataBytes, $numEcBytes) = $this->methods['getNumDataBytesAndNumEcBytesForBlockId']
+            ->invoke(null, 3706, 1276, 81, 0);
+        $this->assertSame(15, $numDataBytes);
+        $this->assertSame(30, $numEcBytes);
+        list($numDataBytes, $numEcBytes) = $this->methods['getNumDataBytesAndNumEcBytesForBlockId']
+            ->invoke(null, 3706, 1276, 81, 20);
+        $this->assertSame(16, $numDataBytes);
+        $this->assertSame(30, $numEcBytes);
+        list($numDataBytes, $numEcBytes) = $this->methods['getNumDataBytesAndNumEcBytesForBlockId']
+            ->invoke(null, 3706, 1276, 81, 80);
+        $this->assertSame(16, $numDataBytes);
+        $this->assertSame(30, $numEcBytes);
+    }
+
+    public function testInterleaveWithEcBytes() : void
+    {
+        $dataBytes = SplFixedArray::fromArray([32, 65, 205, 69, 41, 220, 46, 128, 236], false);
+        $in        = new BitArray();
+
+        foreach ($dataBytes as $dataByte) {
+            $in->appendBits($dataByte, 8);
+        }
+
+        $outBits  = $this->methods['interleaveWithEcBytes']->invoke(null, $in, 26, 9, 1);
+        $expected = SplFixedArray::fromArray([
+            // Data bytes.
+            32, 65, 205, 69, 41, 220, 46, 128, 236,
+            // Error correction bytes.
+            42, 159, 74, 221, 244, 169, 239, 150, 138, 70, 237, 85, 224, 96, 74, 219, 61,
+        ], false);
+
+        $out = $outBits->toBytes(0, count($expected));
+
+        $this->assertEquals($expected, $out);
+    }
+
+    public function testAppendNumericBytes() : void
+    {
+        // 1 = 01 = 0001 in 4 bits.
+        $bits = new BitArray();
+        $this->methods['appendNumericBytes']->invoke(null, '1', $bits);
+        $this->assertSame(' ...X', (string) $bits);
+
+        // 12 = 0xc = 0001100 in 7 bits.
+        $bits = new BitArray();
+        $this->methods['appendNumericBytes']->invoke(null, '12', $bits);
+        $this->assertSame(' ...XX..', (string) $bits);
+
+        // 123 = 0x7b = 0001111011 in 10 bits.
+        $bits = new BitArray();
+        $this->methods['appendNumericBytes']->invoke(null, '123', $bits);
+        $this->assertSame(' ...XXXX. XX', (string) $bits);
+
+        // 1234 = "123" + "4" = 0001111011 + 0100 in 14 bits.
+        $bits = new BitArray();
+        $this->methods['appendNumericBytes']->invoke(null, '1234', $bits);
+        $this->assertSame(' ...XXXX. XX.X..', (string) $bits);
+
+        // Empty
+        $bits = new BitArray();
+        $this->methods['appendNumericBytes']->invoke(null, '', $bits);
+        $this->assertSame('', (string) $bits);
+    }
+
+    public function testAppendAlphanumericBytes() : void
+    {
+        $bits = new BitArray();
+        $this->methods['appendAlphanumericBytes']->invoke(null, 'A', $bits);
+        $this->assertSame(' ..X.X.', (string) $bits);
+
+        $bits = new BitArray();
+        $this->methods['appendAlphanumericBytes']->invoke(null, 'AB', $bits);
+        $this->assertSame(' ..XXX..X X.X', (string) $bits);
+
+        $bits = new BitArray();
+        $this->methods['appendAlphanumericBytes']->invoke(null, 'ABC', $bits);
+        $this->assertSame(' ..XXX..X X.X..XX. .', (string) $bits);
+
+        // Empty
+        $bits = new BitArray();
+        $this->methods['appendAlphanumericBytes']->invoke(null, '', $bits);
+        $this->assertSame('', (string) $bits);
+
+        // Invalid data
+        $this->expectException(WriterException::class);
+        $bits = new BitArray();
+        $this->methods['appendAlphanumericBytes']->invoke(null, 'abc', $bits);
+    }
+
+    public function testAppend8BitBytes() : void
+    {
+        // 0x61, 0x62, 0x63
+        $bits = new BitArray();
+        $this->methods['append8BitBytes']->invoke(null, 'abc', $bits, Encoder::DEFAULT_BYTE_MODE_ECODING);
+        $this->assertSame(' .XX....X .XX...X. .XX...XX', (string) $bits);
+
+        // Empty
+        $bits = new BitArray();
+        $this->methods['append8BitBytes']->invoke(null, '', $bits, Encoder::DEFAULT_BYTE_MODE_ECODING);
+        $this->assertSame('', (string) $bits);
+    }
+
+    public function testAppendKanjiBytes() : void
+    {
+        // Numbers are from page 21 of JISX0510:2004
+        $bits = new BitArray();
+        $this->methods['appendKanjiBytes']->invoke(null, "\x93\x5f", $bits);
+        $this->assertSame(' .XX.XX.. XXXXX', (string) $bits);
+
+        $this->methods['appendKanjiBytes']->invoke(null, "\xe4\xaa", $bits);
+        $this->assertSame(' .XX.XX.. XXXXXXX. X.X.X.X. X.', (string) $bits);
+    }
+
+    public function testGenerateEcBytes() : void
+    {
+        // Numbers are from http://www.swetake.com/qr/qr3.html and
+        // http://www.swetake.com/qr/qr9.html
+        $dataBytes = SplFixedArray::fromArray([32, 65, 205, 69, 41, 220, 46, 128, 236], false);
+        $ecBytes   = $this->methods['generateEcBytes']->invoke(null, $dataBytes, 17);
+        $expected  = SplFixedArray::fromArray(
+            [42, 159, 74, 221, 244, 169, 239, 150, 138, 70, 237, 85, 224, 96, 74, 219, 61],
+            false
+        );
+        $this->assertEquals($expected, $ecBytes);
+
+        $dataBytes = SplFixedArray::fromArray(
+            [67, 70, 22, 38, 54, 70, 86, 102, 118, 134, 150, 166, 182, 198, 214],
+            false
+        );
+        $ecBytes   = $this->methods['generateEcBytes']->invoke(null, $dataBytes, 18);
+        $expected  = SplFixedArray::fromArray(
+            [175, 80, 155, 64, 178, 45, 214, 233, 65, 209, 12, 155, 117, 31, 140, 214, 27, 187],
+            false
+        );
+        $this->assertEquals($expected, $ecBytes);
+
+        // High-order zero coefficient case.
+        $dataBytes = SplFixedArray::fromArray([32, 49, 205, 69, 42, 20, 0, 236, 17], false);
+        $ecBytes   = $this->methods['generateEcBytes']->invoke(null, $dataBytes, 17);
+        $expected  = SplFixedArray::fromArray(
+            [0, 3, 130, 179, 194, 0, 55, 211, 110, 79, 98, 72, 170, 96, 211, 137, 213],
+            false
+        );
+        $this->assertEquals($expected, $ecBytes);
+    }
+}

vendor/bacon/bacon-qr-code/test/Encoder/MaskUtilTest.php

@@ -0,0 +1,251 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCodeTest\Encoder;
+
+use BaconQrCode\Encoder\ByteMatrix;
+use BaconQrCode\Encoder\MaskUtil;
+use PHPUnit\Framework\TestCase;
+
+class MaskUtilTest extends TestCase
+{
+    public function dataMaskBits() : array
+    {
+        return [
+            [0, [
+                [1, 0, 1, 0, 1, 0],
+                [0, 1, 0, 1, 0, 1],
+                [1, 0, 1, 0, 1, 0],
+                [0, 1, 0, 1, 0, 1],
+                [1, 0, 1, 0, 1, 0],
+                [0, 1, 0, 1, 0, 1],
+            ]],
+            [1, [
+                [1, 1, 1, 1, 1, 1],
+                [0, 0, 0, 0, 0, 0],
+                [1, 1, 1, 1, 1, 1],
+                [0, 0, 0, 0, 0, 0],
+                [1, 1, 1, 1, 1, 1],
+                [0, 0, 0, 0, 0, 0],
+            ]],
+            [2, [
+                [1, 0, 0, 1, 0, 0],
+                [1, 0, 0, 1, 0, 0],
+                [1, 0, 0, 1, 0, 0],
+                [1, 0, 0, 1, 0, 0],
+                [1, 0, 0, 1, 0, 0],
+                [1, 0, 0, 1, 0, 0],
+            ]],
+            [3, [
+                [1, 0, 0, 1, 0, 0],
+                [0, 0, 1, 0, 0, 1],
+                [0, 1, 0, 0, 1, 0],
+                [1, 0, 0, 1, 0, 0],
+                [0, 0, 1, 0, 0, 1],
+                [0, 1, 0, 0, 1, 0],
+            ]],
+            [4, [
+                [1, 1, 1, 0, 0, 0],
+                [1, 1, 1, 0, 0, 0],
+                [0, 0, 0, 1, 1, 1],
+                [0, 0, 0, 1, 1, 1],
+                [1, 1, 1, 0, 0, 0],
+                [1, 1, 1, 0, 0, 0],
+            ]],
+            [5, [
+                [1, 1, 1, 1, 1, 1],
+                [1, 0, 0, 0, 0, 0],
+                [1, 0, 0, 1, 0, 0],
+                [1, 0, 1, 0, 1, 0],
+                [1, 0, 0, 1, 0, 0],
+                [1, 0, 0, 0, 0, 0],
+            ]],
+            [6, [
+                [1, 1, 1, 1, 1, 1],
+                [1, 1, 1, 0, 0, 0],
+                [1, 1, 0, 1, 1, 0],
+                [1, 0, 1, 0, 1, 0],
+                [1, 0, 1, 1, 0, 1],
+                [1, 0, 0, 0, 1, 1],
+            ]],
+            [7, [
+                [1, 0, 1, 0, 1, 0],
+                [0, 0, 0, 1, 1, 1],
+                [1, 0, 0, 0, 1, 1],
+                [0, 1, 0, 1, 0, 1],
+                [1, 1, 1, 0, 0, 0],
+                [0, 1, 1, 1, 0, 0],
+            ]],
+        ];
+    }
+
+    /**
+     * @dataProvider dataMaskBits
+     */
+    public function testGetDatMaskBit(int $maskPattern, array $expected) : void
+    {
+        for ($x = 0; $x < 6; ++$x) {
+            for ($y = 0; $y < 6; ++$y) {
+                $this->assertSame(
+                    1 === $expected[$y][$x],
+                    MaskUtil::getDataMaskBit($maskPattern, $x, $y)
+                );
+            }
+        }
+    }
+
+    public function testApplyMaskPenaltyRule1() : void
+    {
+        $matrix = new ByteMatrix(4, 1);
+        $matrix->set(0, 0, 0);
+        $matrix->set(1, 0, 0);
+        $matrix->set(2, 0, 0);
+        $matrix->set(3, 0, 0);
+
+        $this->assertSame(0, MaskUtil::applyMaskPenaltyRule1($matrix));
+
+        // Horizontal
+        $matrix = new ByteMatrix(6, 1);
+        $matrix->set(0, 0, 0);
+        $matrix->set(1, 0, 0);
+        $matrix->set(2, 0, 0);
+        $matrix->set(3, 0, 0);
+        $matrix->set(4, 0, 0);
+        $matrix->set(5, 0, 1);
+        $this->assertSame(3, MaskUtil::applyMaskPenaltyRule1($matrix));
+        $matrix->set(5, 0, 0);
+        $this->assertSame(4, MaskUtil::applyMaskPenaltyRule1($matrix));
+
+        // Vertical
+        $matrix = new ByteMatrix(1, 6);
+        $matrix->set(0, 0, 0);
+        $matrix->set(0, 1, 0);
+        $matrix->set(0, 2, 0);
+        $matrix->set(0, 3, 0);
+        $matrix->set(0, 4, 0);
+        $matrix->set(0, 5, 1);
+        $this->assertSame(3, MaskUtil::applyMaskPenaltyRule1($matrix));
+        $matrix->set(0, 5, 0);
+        $this->assertSame(4, MaskUtil::applyMaskPenaltyRule1($matrix));
+    }
+
+    public function testApplyMaskPenaltyRule2() : void
+    {
+        $matrix = new ByteMatrix(1, 1);
+        $matrix->set(0, 0, 0);
+        $this->assertSame(0, MaskUtil::applyMaskPenaltyRule2($matrix));
+
+        $matrix = new ByteMatrix(2, 2);
+        $matrix->set(0, 0, 0);
+        $matrix->set(1, 0, 0);
+        $matrix->set(0, 1, 0);
+        $matrix->set(1, 1, 1);
+        $this->assertSame(0, MaskUtil::applyMaskPenaltyRule2($matrix));
+
+        $matrix = new ByteMatrix(2, 2);
+        $matrix->set(0, 0, 0);
+        $matrix->set(1, 0, 0);
+        $matrix->set(0, 1, 0);
+        $matrix->set(1, 1, 0);
+        $this->assertSame(3, MaskUtil::applyMaskPenaltyRule2($matrix));
+
+        $matrix = new ByteMatrix(3, 3);
+        $matrix->set(0, 0, 0);
+        $matrix->set(1, 0, 0);
+        $matrix->set(2, 0, 0);
+        $matrix->set(0, 1, 0);
+        $matrix->set(1, 1, 0);
+        $matrix->set(2, 1, 0);
+        $matrix->set(0, 2, 0);
+        $matrix->set(1, 2, 0);
+        $matrix->set(2, 2, 0);
+        $this->assertSame(3 * 4, MaskUtil::applyMaskPenaltyRule2($matrix));
+    }
+
+    public function testApplyMaskPenalty3() : void
+    {
+        // Horizontal 00001011101
+        $matrix = new ByteMatrix(11, 1);
+        $matrix->set(0, 0, 0);
+        $matrix->set(1, 0, 0);
+        $matrix->set(2, 0, 0);
+        $matrix->set(3, 0, 0);
+        $matrix->set(4, 0, 1);
+        $matrix->set(5, 0, 0);
+        $matrix->set(6, 0, 1);
+        $matrix->set(7, 0, 1);
+        $matrix->set(8, 0, 1);
+        $matrix->set(9, 0, 0);
+        $matrix->set(10, 0, 1);
+        $this->assertSame(40, MaskUtil::applyMaskPenaltyRule3($matrix));
+
+        // Horizontal 10111010000
+        $matrix = new ByteMatrix(11, 1);
+        $matrix->set(0, 0, 1);
+        $matrix->set(1, 0, 0);
+        $matrix->set(2, 0, 1);
+        $matrix->set(3, 0, 1);
+        $matrix->set(4, 0, 1);
+        $matrix->set(5, 0, 0);
+        $matrix->set(6, 0, 1);
+        $matrix->set(7, 0, 0);
+        $matrix->set(8, 0, 0);
+        $matrix->set(9, 0, 0);
+        $matrix->set(10, 0, 0);
+        $this->assertSame(40, MaskUtil::applyMaskPenaltyRule3($matrix));
+
+        // Vertical 00001011101
+        $matrix = new ByteMatrix(1, 11);
+        $matrix->set(0, 0, 0);
+        $matrix->set(0, 1, 0);
+        $matrix->set(0, 2, 0);
+        $matrix->set(0, 3, 0);
+        $matrix->set(0, 4, 1);
+        $matrix->set(0, 5, 0);
+        $matrix->set(0, 6, 1);
+        $matrix->set(0, 7, 1);
+        $matrix->set(0, 8, 1);
+        $matrix->set(0, 9, 0);
+        $matrix->set(0, 10, 1);
+        $this->assertSame(40, MaskUtil::applyMaskPenaltyRule3($matrix));
+
+        // Vertical 10111010000
+        $matrix = new ByteMatrix(1, 11);
+        $matrix->set(0, 0, 1);
+        $matrix->set(0, 1, 0);
+        $matrix->set(0, 2, 1);
+        $matrix->set(0, 3, 1);
+        $matrix->set(0, 4, 1);
+        $matrix->set(0, 5, 0);
+        $matrix->set(0, 6, 1);
+        $matrix->set(0, 7, 0);
+        $matrix->set(0, 8, 0);
+        $matrix->set(0, 9, 0);
+        $matrix->set(0, 10, 0);
+        $this->assertSame(40, MaskUtil::applyMaskPenaltyRule3($matrix));
+    }
+
+    public function testApplyMaskPenaltyRule4() : void
+    {
+        // Dark cell ratio = 0%
+        $matrix = new ByteMatrix(1, 1);
+        $matrix->set(0, 0, 0);
+        $this->assertSame(100, MaskUtil::applyMaskPenaltyRule4($matrix));
+
+        // Dark cell ratio = 5%
+        $matrix = new ByteMatrix(2, 1);
+        $matrix->set(0, 0, 0);
+        $matrix->set(0, 0, 1);
+        $this->assertSame(0, MaskUtil::applyMaskPenaltyRule4($matrix));
+
+        // Dark cell ratio = 66.67%
+        $matrix = new ByteMatrix(6, 1);
+        $matrix->set(0, 0, 0);
+        $matrix->set(1, 0, 1);
+        $matrix->set(2, 0, 1);
+        $matrix->set(3, 0, 1);
+        $matrix->set(4, 0, 1);
+        $matrix->set(5, 0, 0);
+        $this->assertSame(30, MaskUtil::applyMaskPenaltyRule4($matrix));
+    }
+}

vendor/bacon/bacon-qr-code/test/Encoder/MatrixUtilTest.php

@@ -0,0 +1,335 @@
+<?php
+declare(strict_types = 1);
+
+namespace BaconQrCodeTest\Encoder;
+
+use BaconQrCode\Common\BitArray;
+use BaconQrCode\Common\ErrorCorrectionLevel;
+use BaconQrCode\Common\Version;
+use BaconQrCode\Encoder\ByteMatrix;
+use BaconQrCode\Encoder\MatrixUtil;
+use PHPUnit\Framework\TestCase;
+use ReflectionClass;
+use ReflectionMethod;
+
+class MatrixUtilTest extends TestCase
+{
+    /**
+     * @var ReflectionMethod[]
+     */
+    protected $methods = [];
+
+    public function setUp() : void
+    {
+        // Hack to be able to test protected methods
+        $reflection = new ReflectionClass(MatrixUtil::class);
+
+        foreach ($reflection->getMethods(ReflectionMethod::IS_STATIC) as $method) {
+            $method->setAccessible(true);
+            $this->methods[$method->getName()] = $method;
+        }
+    }
+
+    public function testToString() : void
+    {
+        $matrix = new ByteMatrix(3, 3);
+        $matrix->set(0, 0, 0);
+        $matrix->set(1, 0, 1);
+        $matrix->set(2, 0, 0);
+        $matrix->set(0, 1, 1);
+        $matrix->set(1, 1, 0);
+        $matrix->set(2, 1, 1);
+        $matrix->set(0, 2, -1);
+        $matrix->set(1, 2, -1);
+        $matrix->set(2, 2, -1);
+
+        $expected = " 0 1 0\n 1 0 1\n      \n";
+        $this->assertSame($expected, (string) $matrix);
+    }
+
+    public function testClearMatrix() : void
+    {
+        $matrix = new ByteMatrix(2, 2);
+        MatrixUtil::clearMatrix($matrix);
+
+        $this->assertSame(-1, $matrix->get(0, 0));
+        $this->assertSame(-1, $matrix->get(1, 0));
+        $this->assertSame(-1, $matrix->get(0, 1));
+        $this->assertSame(-1, $matrix->get(1, 1));
+    }
+
+    public function testEmbedBasicPatterns1() : void
+    {
+        $matrix = new ByteMatrix(21, 21);
+        MatrixUtil::clearMatrix($matrix);
+        $this->methods['embedBasicPatterns']->invoke(
+            null,
+            Version::getVersionForNumber(1),
+            $matrix
+        );
+        $expected = " 1 1 1 1 1 1 1 0           0 1 1 1 1 1 1 1\n"
+                  . " 1 0 0 0 0 0 1 0           0 1 0 0 0 0 0 1\n"
+                  . " 1 0 1 1 1 0 1 0           0 1 0 1 1 1 0 1\n"
+                  . " 1 0 1 1 1 0 1 0           0 1 0 1 1 1 0 1\n"
+                  . " 1 0 1 1 1 0 1 0           0 1 0 1 1 1 0 1\n"
+                  . " 1 0 0 0 0 0 1 0           0 1 0 0 0 0 0 1\n"
+                  . " 1 1 1 1 1 1 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1\n"
+                  . " 0 0 0 0 0 0 0 0           0 0 0 0 0 0 0 0\n"
+                  . "             1                            \n"
+                  . "             0                            \n"
+                  . "             1                            \n"
+                  . "             0                            \n"
+                  . "             1                            \n"
+                  . " 0 0 0 0 0 0 0 0 1                        \n"
+                  . " 1 1 1 1 1 1 1 0                          \n"
+                  . " 1 0 0 0 0 0 1 0                          \n"
+                  . " 1 0 1 1 1 0 1 0                          \n"
+                  . " 1 0 1 1 1 0 1 0                          \n"
+                  . " 1 0 1 1 1 0 1 0                          \n"
+                  . " 1 0 0 0 0 0 1 0                          \n"
+                  . " 1 1 1 1 1 1 1 0                          \n";
+
+        $this->assertSame($expected, (string) $matrix);
+    }
+
+    public function testEmbedBasicPatterns2() : void
+    {
+        $matrix = new ByteMatrix(25, 25);
+        MatrixUtil::clearMatrix($matrix);
+        $this->methods['embedBasicPatterns']->invoke(
+            null,
+            Version::getVersionForNumber(2),
+            $matrix
+        );
+        $expected = " 1 1 1 1 1 1 1 0                   0 1 1 1 1 1 1 1\n"
+                  . " 1 0 0 0 0 0 1 0                   0 1 0 0 0 0 0 1\n"
+                  . " 1 0 1 1 1 0 1 0                   0 1 0 1 1 1 0 1\n"
+                  . " 1 0 1 1 1 0 1 0                   0 1 0 1 1 1 0 1\n"
+                  . " 1 0 1 1 1 0 1 0                   0 1 0 1 1 1 0 1\n"
+                  . " 1 0 0 0 0 0 1 0                   0 1 0 0 0 0 0 1\n"
+                  . " 1 1 1 1 1 1 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1\n"
+                  . " 0 0 0 0 0 0 0 0                   0 0 0 0 0 0 0 0\n"
+                  . "             1                                    \n"
+                  . "             0                                    \n"
+                  . "             1                                    \n"
+                  . "             0                                    \n"
+                  . "             1                                    \n"
+                  . "             0                                    \n"
+                  . "             1                                    \n"
+                  . "             0                                    \n"
+                  . "             1                   1 1 1 1 1        \n"
+                  . " 0 0 0 0 0 0 0 0 1               1 0 0 0 1        \n"
+                  . " 1 1 1 1 1 1 1 0                 1 0 1 0 1        \n"
+                  . " 1 0 0 0 0 0 1 0                 1 0 0 0 1        \n"
+                  . " 1 0 1 1 1 0 1 0                 1 1 1 1 1        \n"
+                  . " 1 0 1 1 1 0 1 0                                  \n"
+                  . " 1 0 1 1 1 0 1 0                                  \n"
+                  . " 1 0 0 0 0 0 1 0                                  \n"
+                  . " 1 1 1 1 1 1 1 0                                  \n";
+
+        $this->assertSame($expected, (string) $matrix);
+    }
+
+    public function testEmbedTypeInfo() : void
+    {
+        $matrix = new ByteMatrix(21, 21);
+        MatrixUtil::clearMatrix($matrix);
+        $this->methods['embedTypeInfo']->invoke(
+            null,
+            ErrorCorrectionLevel::M(),
+            5,
+            $matrix
+        );
+        $expected = "                 0                        \n"
+                  . "                 1                        \n"
+                  . "                 1                        \n"
+                  . "                 1                        \n"
+                  . "                 0                        \n"
+                  . "                 0                        \n"
+                  . "                                          \n"
+                  . "                 1                        \n"
+                  . " 1 0 0 0 0 0   0 1         1 1 0 0 1 1 1 0\n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . "                 0                        \n"
+                  . "                 0                        \n"
+                  . "                 0                        \n"
+                  . "                 0                        \n"
+                  . "                 0                        \n"
+                  . "                 0                        \n"
+                  . "                 1                        \n";
+
+        $this->assertSame($expected, (string) $matrix);
+    }
+
+    public function testEmbedVersionInfo() : void
+    {
+        $matrix = new ByteMatrix(21, 21);
+        MatrixUtil::clearMatrix($matrix);
+        $this->methods['maybeEmbedVersionInfo']->invoke(
+            null,
+            Version::getVersionForNumber(7),
+            $matrix
+        );
+        $expected = "                     0 0 1                \n"
+                  . "                     0 1 0                \n"
+                  . "                     0 1 0                \n"
+                  . "                     0 1 1                \n"
+                  . "                     1 1 1                \n"
+                  . "                     0 0 0                \n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . " 0 0 0 0 1 0                              \n"
+                  . " 0 1 1 1 1 0                              \n"
+                  . " 1 0 0 1 1 0                              \n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . "                                          \n"
+                  . "                                          \n";
+
+        $this->assertSame($expected, (string) $matrix);
+    }
+
+    public function testEmbedDataBits() : void
+    {
+        $matrix = new ByteMatrix(21, 21);
+        MatrixUtil::clearMatrix($matrix);
+        $this->methods['embedBasicPatterns']->invoke(
+            null,
+            Version::getVersionForNumber(1),
+            $matrix
+        );
+
+        $bits = new BitArray();
+        $this->methods['embedDataBits']->invoke(
+            null,
+            $bits,
+            -1,
+            $matrix
+        );
+
+        $expected = " 1 1 1 1 1 1 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1\n"
+                  . " 1 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 1\n"
+                  . " 1 0 1 1 1 0 1 0 0 0 0 0 0 0 1 0 1 1 1 0 1\n"
+                  . " 1 0 1 1 1 0 1 0 0 0 0 0 0 0 1 0 1 1 1 0 1\n"
+                  . " 1 0 1 1 1 0 1 0 0 0 0 0 0 0 1 0 1 1 1 0 1\n"
+                  . " 1 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 1\n"
+                  . " 1 1 1 1 1 1 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1\n"
+                  . " 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 1 0 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 1 0 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 1 0 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n"
+                  . " 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0\n";
+
+        $this->assertSame($expected, (string) $matrix);
+    }
+
+    public function testBuildMatrix() : void
+    {
+        $bytes = [
+            32, 65, 205, 69, 41, 220, 46, 128, 236, 42, 159, 74, 221, 244, 169,
+            239, 150, 138, 70, 237, 85, 224, 96, 74, 219 , 61
+        ];
+        $bits = new BitArray();
+
+        foreach ($bytes as $byte) {
+            $bits->appendBits($byte, 8);
+        }
+
+        $matrix = new ByteMatrix(21, 21);
+        MatrixUtil::buildMatrix(
+            $bits,
+            ErrorCorrectionLevel::H(),
+            Version::getVersionForNumber(1),
+            3,
+            $matrix
+        );
+
+        $expected = " 1 1 1 1 1 1 1 0 0 1 1 0 0 0 1 1 1 1 1 1 1\n"
+                  . " 1 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 1\n"
+                  . " 1 0 1 1 1 0 1 0 0 0 0 1 0 0 1 0 1 1 1 0 1\n"
+                  . " 1 0 1 1 1 0 1 0 0 1 1 0 0 0 1 0 1 1 1 0 1\n"
+                  . " 1 0 1 1 1 0 1 0 1 1 0 0 1 0 1 0 1 1 1 0 1\n"
+                  . " 1 0 0 0 0 0 1 0 0 0 1 1 1 0 1 0 0 0 0 0 1\n"
+                  . " 1 1 1 1 1 1 1 0 1 0 1 0 1 0 1 1 1 1 1 1 1\n"
+                  . " 0 0 0 0 0 0 0 0 1 1 0 1 1 0 0 0 0 0 0 0 0\n"
+                  . " 0 0 1 1 0 0 1 1 1 0 0 1 1 1 1 0 1 0 0 0 0\n"
+                  . " 1 0 1 0 1 0 0 0 0 0 1 1 1 0 0 1 0 1 1 1 0\n"
+                  . " 1 1 1 1 0 1 1 0 1 0 1 1 1 0 0 1 1 1 0 1 0\n"
+                  . " 1 0 1 0 1 1 0 1 1 1 0 0 1 1 1 0 0 1 0 1 0\n"
+                  . " 0 0 1 0 0 1 1 1 0 0 0 0 0 0 1 0 1 1 1 1 1\n"
+                  . " 0 0 0 0 0 0 0 0 1 1 0 1 0 0 0 0 0 1 0 1 1\n"
+                  . " 1 1 1 1 1 1 1 0 1 1 1 1 0 0 0 0 1 0 1 1 0\n"
+                  . " 1 0 0 0 0 0 1 0 0 0 0 1 0 1 1 1 0 0 0 0 0\n"
+                  . " 1 0 1 1 1 0 1 0 0 1 0 0 1 1 0 0 1 0 0 1 1\n"
+                  . " 1 0 1 1 1 0 1 0 1 1 0 1 0 0 0 0 0 1 1 1 0\n"
+                  . " 1 0 1 1 1 0 1 0 1 1 1 1 0 0 0 0 1 1 1 0 0\n"
+                  . " 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 0 1 0 0\n"
+                  . " 1 1 1 1 1 1 1 0 0 0 1 1 1 1 1 0 1 0 0 1 0\n";
+
+        $this->assertSame($expected, (string) $matrix);
+    }
+
+    public function testFindMsbSet() : void
+    {
+        $this->assertSame(0, $this->methods['findMsbSet']->invoke(null, 0));
+        $this->assertSame(1, $this->methods['findMsbSet']->invoke(null, 1));
+        $this->assertSame(8, $this->methods['findMsbSet']->invoke(null, 0x80));
+        $this->assertSame(32, $this->methods['findMsbSet']->invoke(null, 0x80000000));
+    }
+
+    public function testCalculateBchCode() : void
+    {
+        // Encoding of type information.
+        // From Appendix C in JISX0510:2004 (p 65)
+        $this->assertSame(0xdc, $this->methods['calculateBchCode']->invoke(null, 5, 0x537));
+        // From http://www.swetake.com/qr/qr6.html
+        $this->assertSame(0x1c2, $this->methods['calculateBchCode']->invoke(null, 0x13, 0x537));
+        // From http://www.swetake.com/qr/qr11.html
+        $this->assertSame(0x214, $this->methods['calculateBchCode']->invoke(null, 0x1b, 0x537));
+
+        // Encoding of version information.
+        // From Appendix D in JISX0510:2004 (p 68)
+        $this->assertSame(0xc94, $this->methods['calculateBchCode']->invoke(null, 7, 0x1f25));
+        $this->assertSame(0x5bc, $this->methods['calculateBchCode']->invoke(null, 8, 0x1f25));
+        $this->assertSame(0xa99, $this->methods['calculateBchCode']->invoke(null, 9, 0x1f25));
+        $this->assertSame(0x4d3, $this->methods['calculateBchCode']->invoke(null, 10, 0x1f25));
+        $this->assertSame(0x9a6, $this->methods['calculateBchCode']->invoke(null, 20, 0x1f25));
+        $this->assertSame(0xd75, $this->methods['calculateBchCode']->invoke(null, 30, 0x1f25));
+        $this->assertSame(0xc69, $this->methods['calculateBchCode']->invoke(null, 40, 0x1f25));
+    }
+
+    public function testMakeVersionInfoBits() : void
+    {
+        // From Appendix D in JISX0510:2004 (p 68)
+        $bits = new BitArray();
+        $this->methods['makeVersionInfoBits']->invoke(null, Version::getVersionForNumber(7), $bits);
+        $this->assertSame(' ...XXXXX ..X..X.X ..', (string) $bits);
+    }
+
+    public function testMakeTypeInfoBits() : void
+    {
+        // From Appendix D in JISX0510:2004 (p 68)
+        $bits = new BitArray();
+        $this->methods['makeTypeInfoBits']->invoke(null, ErrorCorrectionLevel::M(), 5, $bits);
+        $this->assertSame(' X......X X..XXX.', (string) $bits);
+    }
+}

vendor/composer/autoload_classmap.php

@@ -8,6 +8,7 @@ $baseDir = dirname($vendorDir);
 return array(
     'Attribute' => $vendorDir . '/symfony/polyfill-php80/Resources/stubs/Attribute.php',
     'Ip2Region' => $vendorDir . '/zoujingli/ip2region/Ip2Region.php',
+    'Normalizer' => $vendorDir . '/symfony/polyfill-intl-normalizer/Resources/stubs/Normalizer.php',
     'Stringable' => $vendorDir . '/symfony/polyfill-php80/Resources/stubs/Stringable.php',
     'UnhandledMatchError' => $vendorDir . '/symfony/polyfill-php80/Resources/stubs/UnhandledMatchError.php',
     'ValueError' => $vendorDir . '/symfony/polyfill-php80/Resources/stubs/ValueError.php',

vendor/composer/autoload_files.php

@@ -9,13 +9,17 @@ return array(
     'a4a119a56e50fbb293281d9a48007e0e' => $vendorDir . '/symfony/polyfill-php80/bootstrap.php',
     '0e6d7bf4a5811bfa5cf40c5ccd6fae6a' => $vendorDir . '/symfony/polyfill-mbstring/bootstrap.php',
     '6e3fae29631ef280660b3cdad06f25a8' => $vendorDir . '/symfony/deprecation-contracts/function.php',
+    '320cde22f66dd4f5d3fd621d3e88b98f' => $vendorDir . '/symfony/polyfill-ctype/bootstrap.php',
     '7b11c4dc42b3b3023073cb14e519683c' => $vendorDir . '/ralouphie/getallheaders/src/getallheaders.php',
     'c964ee0ededf28c96ebd9db5099ef910' => $vendorDir . '/guzzlehttp/promises/src/functions_include.php',
     'a0edc8309cc5e1d60e3047b5df6b7052' => $vendorDir . '/guzzlehttp/psr7/src/functions_include.php',
     '37a3dc5111fe8f707ab4c132ef1dbc62' => $vendorDir . '/guzzlehttp/guzzle/src/functions_include.php',
-    '320cde22f66dd4f5d3fd621d3e88b98f' => $vendorDir . '/symfony/polyfill-ctype/bootstrap.php',
+    '8825ede83f2f289127722d4e842cf7e8' => $vendorDir . '/symfony/polyfill-intl-grapheme/bootstrap.php',
+    'e69f7f6ee287b969198c3c9d6777bd38' => $vendorDir . '/symfony/polyfill-intl-normalizer/bootstrap.php',
+    'b6b991a57620e2fb6b2f66f03fe9ddc2' => $vendorDir . '/symfony/string/Resources/functions.php',
     'd767e4fc2dc52fe66584ab8c6684783e' => $vendorDir . '/adbario/php-dot-notation/src/helpers.php',
     '65fec9ebcfbb3cbb4fd0d519687aea01' => $vendorDir . '/danielstjules/stringy/src/Create.php',
+    'a9ed0d27b5a698798a89181429f162c5' => $vendorDir . '/khanamiryan/qrcode-detector-decoder/lib/Common/customFunctions.php',
     'b067bc7112e384b61c701452d53a14a8' => $vendorDir . '/mtdowling/jmespath.php/src/JmesPath.php',
     '841780ea2e1d6545ea3a253239d59c05' => $vendorDir . '/qiniu/php-sdk/src/Qiniu/functions.php',
     '66453932bc1be9fb2f910a27947d11b6' => $vendorDir . '/alibabacloud/client/src/Functions.php',

vendor/composer/autoload_psr4.php

@@ -10,18 +10,24 @@ return array(
     'library\\' => array($vendorDir . '/zoujingli/think-library/src'),
     'hg\\apidoc\\' => array($vendorDir . '/hg/apidoc/src'),
     'clagiordano\\weblibs\\configmanager\\' => array($vendorDir . '/clagiordano/weblibs-configmanager/src'),
+    'Zxing\\' => array($vendorDir . '/khanamiryan/qrcode-detector-decoder/lib'),
     'WePay\\' => array($vendorDir . '/zoujingli/wechat-developer/WePay'),
     'WeOpen\\' => array($vendorDir . '/zoujingli/weopen-developer/WeOpen'),
     'WeMini\\' => array($vendorDir . '/zoujingli/wechat-developer/WeMini', $vendorDir . '/zoujingli/weopen-developer/WeMini'),
     'WeChat\\' => array($vendorDir . '/zoujingli/wechat-developer/WeChat', $vendorDir . '/zoujingli/weopen-developer/WeChat'),
     'Symfony\\Polyfill\\Php80\\' => array($vendorDir . '/symfony/polyfill-php80'),
     'Symfony\\Polyfill\\Mbstring\\' => array($vendorDir . '/symfony/polyfill-mbstring'),
+    'Symfony\\Polyfill\\Intl\\Normalizer\\' => array($vendorDir . '/symfony/polyfill-intl-normalizer'),
+    'Symfony\\Polyfill\\Intl\\Grapheme\\' => array($vendorDir . '/symfony/polyfill-intl-grapheme'),
     'Symfony\\Polyfill\\Ctype\\' => array($vendorDir . '/symfony/polyfill-ctype'),
     'Symfony\\Contracts\\Service\\' => array($vendorDir . '/symfony/service-contracts'),
     'Symfony\\Contracts\\EventDispatcher\\' => array($vendorDir . '/symfony/event-dispatcher-contracts'),
     'Symfony\\Contracts\\Cache\\' => array($vendorDir . '/symfony/cache-contracts'),
     'Symfony\\Component\\Yaml\\' => array($vendorDir . '/symfony/yaml'),
     'Symfony\\Component\\VarExporter\\' => array($vendorDir . '/symfony/var-exporter'),
+    'Symfony\\Component\\String\\' => array($vendorDir . '/symfony/string'),
+    'Symfony\\Component\\PropertyInfo\\' => array($vendorDir . '/symfony/property-info'),
+    'Symfony\\Component\\PropertyAccess\\' => array($vendorDir . '/symfony/property-access'),
     'Symfony\\Component\\OptionsResolver\\' => array($vendorDir . '/symfony/options-resolver'),
     'Symfony\\Component\\HttpFoundation\\' => array($vendorDir . '/symfony/http-foundation'),
     'Symfony\\Component\\EventDispatcher\\' => array($vendorDir . '/symfony/event-dispatcher'),
@@ -39,6 +45,7 @@ return array(
     'Psr\\Cache\\' => array($vendorDir . '/psr/cache/src'),
     'Overtrue\\Socialite\\' => array($vendorDir . '/overtrue/socialite/src'),
     'OSS\\' => array($vendorDir . '/aliyuncs/oss-sdk-php/src/OSS'),
+    'MyCLabs\\Enum\\' => array($vendorDir . '/myclabs/php-enum/src'),
     'Monolog\\' => array($vendorDir . '/monolog/monolog/src/Monolog'),
     'JmesPath\\' => array($vendorDir . '/mtdowling/jmespath.php/src'),
     'GuzzleHttp\\Psr7\\' => array($vendorDir . '/guzzlehttp/psr7/src'),
@@ -50,6 +57,8 @@ return array(
     'EasyWeChatComposer\\' => array($vendorDir . '/easywechat-composer/easywechat-composer/src'),
     'Doctrine\\Common\\Lexer\\' => array($vendorDir . '/doctrine/lexer/lib/Doctrine/Common/Lexer'),
     'Doctrine\\Common\\Annotations\\' => array($vendorDir . '/doctrine/annotations/lib/Doctrine/Common/Annotations'),
+    'DASPRiD\\Enum\\' => array($vendorDir . '/dasprid/enum/src'),
+    'BaconQrCode\\' => array($vendorDir . '/bacon/bacon-qr-code/src'),
     'AlibabaCloud\\Client\\' => array($vendorDir . '/alibabacloud/client/src'),
     'AliPay\\' => array($vendorDir . '/zoujingli/wechat-developer/AliPay'),
     'Adbar\\' => array($vendorDir . '/adbario/php-dot-notation/src'),

vendor/composer/autoload_static.php

@@ -10,13 +10,17 @@ class ComposerStaticInit4d241e9f8bb10d006cd7432f945fdb5b
         'a4a119a56e50fbb293281d9a48007e0e' => __DIR__ . '/..' . '/symfony/polyfill-php80/bootstrap.php',
         '0e6d7bf4a5811bfa5cf40c5ccd6fae6a' => __DIR__ . '/..' . '/symfony/polyfill-mbstring/bootstrap.php',
         '6e3fae29631ef280660b3cdad06f25a8' => __DIR__ . '/..' . '/symfony/deprecation-contracts/function.php',
+        '320cde22f66dd4f5d3fd621d3e88b98f' => __DIR__ . '/..' . '/symfony/polyfill-ctype/bootstrap.php',
         '7b11c4dc42b3b3023073cb14e519683c' => __DIR__ . '/..' . '/ralouphie/getallheaders/src/getallheaders.php',
         'c964ee0ededf28c96ebd9db5099ef910' => __DIR__ . '/..' . '/guzzlehttp/promises/src/functions_include.php',
         'a0edc8309cc5e1d60e3047b5df6b7052' => __DIR__ . '/..' . '/guzzlehttp/psr7/src/functions_include.php',
         '37a3dc5111fe8f707ab4c132ef1dbc62' => __DIR__ . '/..' . '/guzzlehttp/guzzle/src/functions_include.php',
-        '320cde22f66dd4f5d3fd621d3e88b98f' => __DIR__ . '/..' . '/symfony/polyfill-ctype/bootstrap.php',
+        '8825ede83f2f289127722d4e842cf7e8' => __DIR__ . '/..' . '/symfony/polyfill-intl-grapheme/bootstrap.php',
+        'e69f7f6ee287b969198c3c9d6777bd38' => __DIR__ . '/..' . '/symfony/polyfill-intl-normalizer/bootstrap.php',
+        'b6b991a57620e2fb6b2f66f03fe9ddc2' => __DIR__ . '/..' . '/symfony/string/Resources/functions.php',
         'd767e4fc2dc52fe66584ab8c6684783e' => __DIR__ . '/..' . '/adbario/php-dot-notation/src/helpers.php',
         '65fec9ebcfbb3cbb4fd0d519687aea01' => __DIR__ . '/..' . '/danielstjules/stringy/src/Create.php',
+        'a9ed0d27b5a698798a89181429f162c5' => __DIR__ . '/..' . '/khanamiryan/qrcode-detector-decoder/lib/Common/customFunctions.php',
         'b067bc7112e384b61c701452d53a14a8' => __DIR__ . '/..' . '/mtdowling/jmespath.php/src/JmesPath.php',
         '841780ea2e1d6545ea3a253239d59c05' => __DIR__ . '/..' . '/qiniu/php-sdk/src/Qiniu/functions.php',
         '66453932bc1be9fb2f910a27947d11b6' => __DIR__ . '/..' . '/alibabacloud/client/src/Functions.php',
@@ -42,6 +46,10 @@ class ComposerStaticInit4d241e9f8bb10d006cd7432f945fdb5b
         array (
             'clagiordano\\weblibs\\configmanager\\' => 34,
         ),
+        'Z' => 
+        array (
+            'Zxing\\' => 6,
+        ),
         'W' => 
         array (
             'WePay\\' => 6,
@@ -53,12 +61,17 @@ class ComposerStaticInit4d241e9f8bb10d006cd7432f945fdb5b
         array (
             'Symfony\\Polyfill\\Php80\\' => 23,
             'Symfony\\Polyfill\\Mbstring\\' => 26,
+            'Symfony\\Polyfill\\Intl\\Normalizer\\' => 33,
+            'Symfony\\Polyfill\\Intl\\Grapheme\\' => 31,
             'Symfony\\Polyfill\\Ctype\\' => 23,
             'Symfony\\Contracts\\Service\\' => 26,
             'Symfony\\Contracts\\EventDispatcher\\' => 34,
             'Symfony\\Contracts\\Cache\\' => 24,
             'Symfony\\Component\\Yaml\\' => 23,
             'Symfony\\Component\\VarExporter\\' => 30,
+            'Symfony\\Component\\String\\' => 25,
+            'Symfony\\Component\\PropertyInfo\\' => 31,
+            'Symfony\\Component\\PropertyAccess\\' => 33,
             'Symfony\\Component\\OptionsResolver\\' => 34,
             'Symfony\\Component\\HttpFoundation\\' => 33,
             'Symfony\\Component\\EventDispatcher\\' => 34,
@@ -88,6 +101,7 @@ class ComposerStaticInit4d241e9f8bb10d006cd7432f945fdb5b
         ),
         'M' => 
         array (
+            'MyCLabs\\Enum\\' => 13,
             'Monolog\\' => 8,
         ),
         'J' => 
@@ -114,6 +128,11 @@ class ComposerStaticInit4d241e9f8bb10d006cd7432f945fdb5b
         array (
             'Doctrine\\Common\\Lexer\\' => 22,
             'Doctrine\\Common\\Annotations\\' => 28,
+            'DASPRiD\\Enum\\' => 13,
+        ),
+        'B' => 
+        array (
+            'BaconQrCode\\' => 12,
         ),
         'A' => 
         array (
@@ -140,6 +159,10 @@ class ComposerStaticInit4d241e9f8bb10d006cd7432f945fdb5b
         array (
             0 => __DIR__ . '/..' . '/clagiordano/weblibs-configmanager/src',
         ),
+        'Zxing\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/khanamiryan/qrcode-detector-decoder/lib',
+        ),
         'WePay\\' => 
         array (
             0 => __DIR__ . '/..' . '/zoujingli/wechat-developer/WePay',
@@ -166,6 +189,14 @@ class ComposerStaticInit4d241e9f8bb10d006cd7432f945fdb5b
         array (
             0 => __DIR__ . '/..' . '/symfony/polyfill-mbstring',
         ),
+        'Symfony\\Polyfill\\Intl\\Normalizer\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/symfony/polyfill-intl-normalizer',
+        ),
+        'Symfony\\Polyfill\\Intl\\Grapheme\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/symfony/polyfill-intl-grapheme',
+        ),
         'Symfony\\Polyfill\\Ctype\\' => 
         array (
             0 => __DIR__ . '/..' . '/symfony/polyfill-ctype',
@@ -190,6 +221,18 @@ class ComposerStaticInit4d241e9f8bb10d006cd7432f945fdb5b
         array (
             0 => __DIR__ . '/..' . '/symfony/var-exporter',
         ),
+        'Symfony\\Component\\String\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/symfony/string',
+        ),
+        'Symfony\\Component\\PropertyInfo\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/symfony/property-info',
+        ),
+        'Symfony\\Component\\PropertyAccess\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/symfony/property-access',
+        ),
         'Symfony\\Component\\OptionsResolver\\' => 
         array (
             0 => __DIR__ . '/..' . '/symfony/options-resolver',
@@ -258,6 +301,10 @@ class ComposerStaticInit4d241e9f8bb10d006cd7432f945fdb5b
         array (
             0 => __DIR__ . '/..' . '/aliyuncs/oss-sdk-php/src/OSS',
         ),
+        'MyCLabs\\Enum\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/myclabs/php-enum/src',
+        ),
         'Monolog\\' => 
         array (
             0 => __DIR__ . '/..' . '/monolog/monolog/src/Monolog',
@@ -302,6 +349,14 @@ class ComposerStaticInit4d241e9f8bb10d006cd7432f945fdb5b
         array (
             0 => __DIR__ . '/..' . '/doctrine/annotations/lib/Doctrine/Common/Annotations',
         ),
+        'DASPRiD\\Enum\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/dasprid/enum/src',
+        ),
+        'BaconQrCode\\' => 
+        array (
+            0 => __DIR__ . '/..' . '/bacon/bacon-qr-code/src',
+        ),
         'AlibabaCloud\\Client\\' => 
         array (
             0 => __DIR__ . '/..' . '/alibabacloud/client/src',
@@ -333,6 +388,7 @@ class ComposerStaticInit4d241e9f8bb10d006cd7432f945fdb5b
     public static $classMap = array (
         'Attribute' => __DIR__ . '/..' . '/symfony/polyfill-php80/Resources/stubs/Attribute.php',
         'Ip2Region' => __DIR__ . '/..' . '/zoujingli/ip2region/Ip2Region.php',
+        'Normalizer' => __DIR__ . '/..' . '/symfony/polyfill-intl-normalizer/Resources/stubs/Normalizer.php',
         'Stringable' => __DIR__ . '/..' . '/symfony/polyfill-php80/Resources/stubs/Stringable.php',
         'UnhandledMatchError' => __DIR__ . '/..' . '/symfony/polyfill-php80/Resources/stubs/UnhandledMatchError.php',
         'ValueError' => __DIR__ . '/..' . '/symfony/polyfill-php80/Resources/stubs/ValueError.php',

vendor/composer/installed.json

@@ -195,6 +195,63 @@
         "homepage": "http://www.aliyun.com/product/oss/"
     },
     {
+        "name": "bacon/bacon-qr-code",
+        "version": "2.0.4",
+        "version_normalized": "2.0.4.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/Bacon/BaconQrCode.git",
+            "reference": "f73543ac4e1def05f1a70bcd1525c8a157a1ad09"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/Bacon/BaconQrCode/zipball/f73543ac4e1def05f1a70bcd1525c8a157a1ad09",
+            "reference": "f73543ac4e1def05f1a70bcd1525c8a157a1ad09",
+            "shasum": "",
+            "mirrors": [
+                {
+                    "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                    "preferred": true
+                }
+            ]
+        },
+        "require": {
+            "dasprid/enum": "^1.0.3",
+            "ext-iconv": "*",
+            "php": "^7.1 || ^8.0"
+        },
+        "require-dev": {
+            "phly/keep-a-changelog": "^1.4",
+            "phpunit/phpunit": "^7 | ^8 | ^9",
+            "squizlabs/php_codesniffer": "^3.4"
+        },
+        "suggest": {
+            "ext-imagick": "to generate QR code images"
+        },
+        "time": "2021-06-18T13:26:35+00:00",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "BaconQrCode\\": "src/"
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "BSD-2-Clause"
+        ],
+        "authors": [
+            {
+                "name": "Ben Scholzen 'DASPRiD'",
+                "email": "mail@dasprids.de",
+                "homepage": "https://dasprids.de/",
+                "role": "Developer"
+            }
+        ],
+        "description": "BaconQrCode is a QR code generator for PHP.",
+        "homepage": "https://github.com/Bacon/BaconQrCode"
+    },
+    {
         "name": "clagiordano/weblibs-configmanager",
         "version": "v1.5.0",
         "version_normalized": "1.5.0.0",
@@ -318,6 +375,57 @@
         ]
     },
     {
+        "name": "dasprid/enum",
+        "version": "1.0.3",
+        "version_normalized": "1.0.3.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/DASPRiD/Enum.git",
+            "reference": "5abf82f213618696dda8e3bf6f64dd042d8542b2"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/DASPRiD/Enum/zipball/5abf82f213618696dda8e3bf6f64dd042d8542b2",
+            "reference": "5abf82f213618696dda8e3bf6f64dd042d8542b2",
+            "shasum": "",
+            "mirrors": [
+                {
+                    "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                    "preferred": true
+                }
+            ]
+        },
+        "require-dev": {
+            "phpunit/phpunit": "^7 | ^8 | ^9",
+            "squizlabs/php_codesniffer": "^3.4"
+        },
+        "time": "2020-10-02T16:03:48+00:00",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "DASPRiD\\Enum\\": "src/"
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "BSD-2-Clause"
+        ],
+        "authors": [
+            {
+                "name": "Ben Scholzen 'DASPRiD'",
+                "email": "mail@dasprids.de",
+                "homepage": "https://dasprids.de/",
+                "role": "Developer"
+            }
+        ],
+        "description": "PHP 7.1 enum implementation",
+        "keywords": [
+            "enum",
+            "map"
+        ]
+    },
+    {
         "name": "doctrine/annotations",
         "version": "1.12.1",
         "version_normalized": "1.12.1.0",
@@ -515,17 +623,17 @@
     },
     {
         "name": "endroid/qr-code",
-        "version": "1.9.3",
-        "version_normalized": "1.9.3.0",
+        "version": "3.9.6",
+        "version_normalized": "3.9.6.0",
         "source": {
             "type": "git",
             "url": "https://github.com/endroid/qr-code.git",
-            "reference": "c9644bec2a9cc9318e98d1437de3c628dcd1ef93"
+            "reference": "9cdd4f5d609bfc8811ca4a62b4d23eb16976242f"
         },
         "dist": {
             "type": "zip",
-            "url": "https://api.github.com/repos/endroid/qr-code/zipball/c9644bec2a9cc9318e98d1437de3c628dcd1ef93",
-            "reference": "c9644bec2a9cc9318e98d1437de3c628dcd1ef93",
+            "url": "https://api.github.com/repos/endroid/qr-code/zipball/9cdd4f5d609bfc8811ca4a62b4d23eb16976242f",
+            "reference": "9cdd4f5d609bfc8811ca4a62b4d23eb16976242f",
             "shasum": "",
             "mirrors": [
                 {
@@ -535,22 +643,28 @@
             ]
         },
         "require": {
-            "ext-gd": "*",
-            "php": ">=5.4",
-            "symfony/options-resolver": "^2.3|^3.0"
+            "bacon/bacon-qr-code": "^2.0",
+            "khanamiryan/qrcode-detector-decoder": "^1.0.2",
+            "myclabs/php-enum": "^1.5",
+            "php": ">=7.2",
+            "symfony/options-resolver": "^3.4||^4.4||^5.0",
+            "symfony/property-access": "^3.4||^4.4||^5.0"
         },
         "require-dev": {
-            "phpunit/phpunit": "^4.0|^5.0",
-            "sensio/framework-extra-bundle": "^3.0",
-            "symfony/browser-kit": "^2.3|^3.0",
-            "symfony/framework-bundle": "^2.3|^3.0",
-            "symfony/http-kernel": "^2.3|^3.0"
+            "endroid/quality": "^1.3.7",
+            "setasign/fpdf": "^1.8"
+        },
+        "suggest": {
+            "ext-gd": "Required for generating PNG images",
+            "roave/security-advisories": "Avoids installation of package versions with vulnerabilities",
+            "setasign/fpdf": "Required to use the FPDF writer.",
+            "symfony/security-checker": "Checks your composer.lock for vulnerabilities"
         },
-        "time": "2017-04-08T09:13:59+00:00",
+        "time": "2020-11-27T14:30:38+00:00",
         "type": "library",
         "extra": {
             "branch-alias": {
-                "dev-master": "1.x-dev"
+                "dev-master": "3.x-dev"
             }
         },
         "installation-source": "dist",
@@ -566,19 +680,18 @@
         "authors": [
             {
                 "name": "Jeroen van den Enden",
-                "email": "info@endroid.nl",
-                "homepage": "http://endroid.nl/"
+                "email": "info@endroid.nl"
             }
         ],
         "description": "Endroid QR Code",
-        "homepage": "https://github.com/endroid/QrCode",
+        "homepage": "https://github.com/endroid/qr-code",
         "keywords": [
             "bundle",
             "code",
             "endroid",
+            "php",
             "qr",
-            "qrcode",
-            "symfony"
+            "qrcode"
         ]
     },
     {
@@ -930,6 +1043,65 @@
         ]
     },
     {
+        "name": "khanamiryan/qrcode-detector-decoder",
+        "version": "1.0.5.2",
+        "version_normalized": "1.0.5.2",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/khanamiryan/php-qrcode-detector-decoder.git",
+            "reference": "04fdd58d86a387065f707dc6d3cc304c719910c1"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/khanamiryan/php-qrcode-detector-decoder/zipball/04fdd58d86a387065f707dc6d3cc304c719910c1",
+            "reference": "04fdd58d86a387065f707dc6d3cc304c719910c1",
+            "shasum": "",
+            "mirrors": [
+                {
+                    "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                    "preferred": true
+                }
+            ]
+        },
+        "require": {
+            "php": ">=5.6"
+        },
+        "require-dev": {
+            "phpunit/phpunit": "^5.7 | ^7.5 | ^8.0 | ^9.0"
+        },
+        "time": "2021-07-13T18:46:38+00:00",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "Zxing\\": "lib/"
+            },
+            "files": [
+                "lib/Common/customFunctions.php"
+            ]
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT",
+            "Apache-2.0"
+        ],
+        "authors": [
+            {
+                "name": "Ashot Khanamiryan",
+                "email": "a.khanamiryan@gmail.com",
+                "homepage": "https://github.com/khanamiryan",
+                "role": "Developer"
+            }
+        ],
+        "description": "QR code decoder / reader",
+        "homepage": "https://github.com/khanamiryan/php-qrcode-detector-decoder/",
+        "keywords": [
+            "barcode",
+            "qr",
+            "zxing"
+        ]
+    },
+    {
         "name": "monolog/monolog",
         "version": "2.2.0",
         "version_normalized": "2.2.0.0",
@@ -1085,6 +1257,60 @@
         ]
     },
     {
+        "name": "myclabs/php-enum",
+        "version": "1.7.7",
+        "version_normalized": "1.7.7.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/myclabs/php-enum.git",
+            "reference": "d178027d1e679832db9f38248fcc7200647dc2b7"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/myclabs/php-enum/zipball/d178027d1e679832db9f38248fcc7200647dc2b7",
+            "reference": "d178027d1e679832db9f38248fcc7200647dc2b7",
+            "shasum": "",
+            "mirrors": [
+                {
+                    "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                    "preferred": true
+                }
+            ]
+        },
+        "require": {
+            "ext-json": "*",
+            "php": ">=7.1"
+        },
+        "require-dev": {
+            "phpunit/phpunit": "^7",
+            "squizlabs/php_codesniffer": "1.*",
+            "vimeo/psalm": "^3.8"
+        },
+        "time": "2020-11-14T18:14:52+00:00",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "MyCLabs\\Enum\\": "src/"
+            }
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "PHP Enum contributors",
+                "homepage": "https://github.com/myclabs/php-enum/graphs/contributors"
+            }
+        ],
+        "description": "PHP Enum implementation",
+        "homepage": "http://github.com/myclabs/php-enum",
+        "keywords": [
+            "enum"
+        ]
+    },
+    {
         "name": "overtrue/socialite",
         "version": "2.0.23",
         "version_normalized": "2.0.23.0",
@@ -2466,6 +2692,153 @@
         ]
     },
     {
+        "name": "symfony/polyfill-intl-grapheme",
+        "version": "v1.23.1",
+        "version_normalized": "1.23.1.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/symfony/polyfill-intl-grapheme.git",
+            "reference": "16880ba9c5ebe3642d1995ab866db29270b36535"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/symfony/polyfill-intl-grapheme/zipball/16880ba9c5ebe3642d1995ab866db29270b36535",
+            "reference": "16880ba9c5ebe3642d1995ab866db29270b36535",
+            "shasum": "",
+            "mirrors": [
+                {
+                    "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                    "preferred": true
+                }
+            ]
+        },
+        "require": {
+            "php": ">=7.1"
+        },
+        "suggest": {
+            "ext-intl": "For best performance"
+        },
+        "time": "2021-05-27T12:26:48+00:00",
+        "type": "library",
+        "extra": {
+            "branch-alias": {
+                "dev-main": "1.23-dev"
+            },
+            "thanks": {
+                "name": "symfony/polyfill",
+                "url": "https://github.com/symfony/polyfill"
+            }
+        },
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "Symfony\\Polyfill\\Intl\\Grapheme\\": ""
+            },
+            "files": [
+                "bootstrap.php"
+            ]
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Nicolas Grekas",
+                "email": "p@tchwork.com"
+            },
+            {
+                "name": "Symfony Community",
+                "homepage": "https://symfony.com/contributors"
+            }
+        ],
+        "description": "Symfony polyfill for intl's grapheme_* functions",
+        "homepage": "https://symfony.com",
+        "keywords": [
+            "compatibility",
+            "grapheme",
+            "intl",
+            "polyfill",
+            "portable",
+            "shim"
+        ]
+    },
+    {
+        "name": "symfony/polyfill-intl-normalizer",
+        "version": "v1.23.0",
+        "version_normalized": "1.23.0.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/symfony/polyfill-intl-normalizer.git",
+            "reference": "8590a5f561694770bdcd3f9b5c69dde6945028e8"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/symfony/polyfill-intl-normalizer/zipball/8590a5f561694770bdcd3f9b5c69dde6945028e8",
+            "reference": "8590a5f561694770bdcd3f9b5c69dde6945028e8",
+            "shasum": "",
+            "mirrors": [
+                {
+                    "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                    "preferred": true
+                }
+            ]
+        },
+        "require": {
+            "php": ">=7.1"
+        },
+        "suggest": {
+            "ext-intl": "For best performance"
+        },
+        "time": "2021-02-19T12:13:01+00:00",
+        "type": "library",
+        "extra": {
+            "branch-alias": {
+                "dev-main": "1.23-dev"
+            },
+            "thanks": {
+                "name": "symfony/polyfill",
+                "url": "https://github.com/symfony/polyfill"
+            }
+        },
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "Symfony\\Polyfill\\Intl\\Normalizer\\": ""
+            },
+            "files": [
+                "bootstrap.php"
+            ],
+            "classmap": [
+                "Resources/stubs"
+            ]
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Nicolas Grekas",
+                "email": "p@tchwork.com"
+            },
+            {
+                "name": "Symfony Community",
+                "homepage": "https://symfony.com/contributors"
+            }
+        ],
+        "description": "Symfony polyfill for intl's Normalizer class and related functions",
+        "homepage": "https://symfony.com",
+        "keywords": [
+            "compatibility",
+            "intl",
+            "normalizer",
+            "polyfill",
+            "portable",
+            "shim"
+        ]
+    },
+    {
         "name": "symfony/polyfill-mbstring",
         "version": "v1.22.0",
         "version_normalized": "1.22.0.0",
@@ -2611,6 +2984,159 @@
         ]
     },
     {
+        "name": "symfony/property-access",
+        "version": "v5.3.4",
+        "version_normalized": "5.3.4.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/symfony/property-access.git",
+            "reference": "098681253076af7070df7d9debe5f75733eea189"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/symfony/property-access/zipball/098681253076af7070df7d9debe5f75733eea189",
+            "reference": "098681253076af7070df7d9debe5f75733eea189",
+            "shasum": "",
+            "mirrors": [
+                {
+                    "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                    "preferred": true
+                }
+            ]
+        },
+        "require": {
+            "php": ">=7.2.5",
+            "symfony/deprecation-contracts": "^2.1",
+            "symfony/polyfill-php80": "^1.16",
+            "symfony/property-info": "^5.2"
+        },
+        "require-dev": {
+            "symfony/cache": "^4.4|^5.0"
+        },
+        "suggest": {
+            "psr/cache-implementation": "To cache access methods."
+        },
+        "time": "2021-07-21T12:40:44+00:00",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "Symfony\\Component\\PropertyAccess\\": ""
+            },
+            "exclude-from-classmap": [
+                "/Tests/"
+            ]
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Fabien Potencier",
+                "email": "fabien@symfony.com"
+            },
+            {
+                "name": "Symfony Community",
+                "homepage": "https://symfony.com/contributors"
+            }
+        ],
+        "description": "Provides functions to read and write from/to an object or array using a simple string notation",
+        "homepage": "https://symfony.com",
+        "keywords": [
+            "access",
+            "array",
+            "extraction",
+            "index",
+            "injection",
+            "object",
+            "property",
+            "property path",
+            "reflection"
+        ]
+    },
+    {
+        "name": "symfony/property-info",
+        "version": "v5.3.4",
+        "version_normalized": "5.3.4.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/symfony/property-info.git",
+            "reference": "0f42009150679a7a256eb6ee106401af5d974ed2"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/symfony/property-info/zipball/0f42009150679a7a256eb6ee106401af5d974ed2",
+            "reference": "0f42009150679a7a256eb6ee106401af5d974ed2",
+            "shasum": "",
+            "mirrors": [
+                {
+                    "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                    "preferred": true
+                }
+            ]
+        },
+        "require": {
+            "php": ">=7.2.5",
+            "symfony/deprecation-contracts": "^2.1",
+            "symfony/polyfill-php80": "^1.16",
+            "symfony/string": "^5.1"
+        },
+        "conflict": {
+            "phpdocumentor/reflection-docblock": "<3.2.2",
+            "phpdocumentor/type-resolver": "<1.4.0",
+            "symfony/dependency-injection": "<4.4"
+        },
+        "require-dev": {
+            "doctrine/annotations": "^1.10.4",
+            "phpdocumentor/reflection-docblock": "^3.0|^4.0|^5.0",
+            "symfony/cache": "^4.4|^5.0",
+            "symfony/dependency-injection": "^4.4|^5.0",
+            "symfony/serializer": "^4.4|^5.0"
+        },
+        "suggest": {
+            "phpdocumentor/reflection-docblock": "To use the PHPDoc",
+            "psr/cache-implementation": "To cache results",
+            "symfony/doctrine-bridge": "To use Doctrine metadata",
+            "symfony/serializer": "To use Serializer metadata"
+        },
+        "time": "2021-07-21T12:40:44+00:00",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "Symfony\\Component\\PropertyInfo\\": ""
+            },
+            "exclude-from-classmap": [
+                "/Tests/"
+            ]
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Kévin Dunglas",
+                "email": "dunglas@gmail.com"
+            },
+            {
+                "name": "Symfony Community",
+                "homepage": "https://symfony.com/contributors"
+            }
+        ],
+        "description": "Extracts information about PHP class' properties using metadata of popular sources",
+        "homepage": "https://symfony.com",
+        "keywords": [
+            "doctrine",
+            "phpdoc",
+            "property",
+            "symfony",
+            "type",
+            "validator"
+        ]
+    },
+    {
         "name": "symfony/psr-http-message-bridge",
         "version": "v2.0.2",
         "version_normalized": "2.0.2.0",
@@ -2753,6 +3279,80 @@
         ]
     },
     {
+        "name": "symfony/string",
+        "version": "v5.3.3",
+        "version_normalized": "5.3.3.0",
+        "source": {
+            "type": "git",
+            "url": "https://github.com/symfony/string.git",
+            "reference": "bd53358e3eccec6a670b5f33ab680d8dbe1d4ae1"
+        },
+        "dist": {
+            "type": "zip",
+            "url": "https://api.github.com/repos/symfony/string/zipball/bd53358e3eccec6a670b5f33ab680d8dbe1d4ae1",
+            "reference": "bd53358e3eccec6a670b5f33ab680d8dbe1d4ae1",
+            "shasum": "",
+            "mirrors": [
+                {
+                    "url": "https://mirrors.aliyun.com/composer/dists/%package%/%reference%.%type%",
+                    "preferred": true
+                }
+            ]
+        },
+        "require": {
+            "php": ">=7.2.5",
+            "symfony/polyfill-ctype": "~1.8",
+            "symfony/polyfill-intl-grapheme": "~1.0",
+            "symfony/polyfill-intl-normalizer": "~1.0",
+            "symfony/polyfill-mbstring": "~1.0",
+            "symfony/polyfill-php80": "~1.15"
+        },
+        "require-dev": {
+            "symfony/error-handler": "^4.4|^5.0",
+            "symfony/http-client": "^4.4|^5.0",
+            "symfony/translation-contracts": "^1.1|^2",
+            "symfony/var-exporter": "^4.4|^5.0"
+        },
+        "time": "2021-06-27T11:44:38+00:00",
+        "type": "library",
+        "installation-source": "dist",
+        "autoload": {
+            "psr-4": {
+                "Symfony\\Component\\String\\": ""
+            },
+            "files": [
+                "Resources/functions.php"
+            ],
+            "exclude-from-classmap": [
+                "/Tests/"
+            ]
+        },
+        "notification-url": "https://packagist.org/downloads/",
+        "license": [
+            "MIT"
+        ],
+        "authors": [
+            {
+                "name": "Nicolas Grekas",
+                "email": "p@tchwork.com"
+            },
+            {
+                "name": "Symfony Community",
+                "homepage": "https://symfony.com/contributors"
+            }
+        ],
+        "description": "Provides an object-oriented API to strings and deals with bytes, UTF-8 code points and grapheme clusters in a unified way",
+        "homepage": "https://symfony.com",
+        "keywords": [
+            "grapheme",
+            "i18n",
+            "string",
+            "unicode",
+            "utf-8",
+            "utf8"
+        ]
+    },
+    {
         "name": "symfony/var-exporter",
         "version": "v5.2.1",
         "version_normalized": "5.2.1.0",

vendor/dasprid/enum/LICENSE

@@ -0,0 +1,22 @@
+Copyright (c) 2017, Ben Scholzen 'DASPRiD'
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+   list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+   this list of conditions and the following disclaimer in the documentation
+   and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/dasprid/enum/README.md

@@ -0,0 +1,164 @@
+# PHP 7.1 enums
+
+[![Build Status](https://travis-ci.org/DASPRiD/Enum.svg?branch=master)](https://travis-ci.org/DASPRiD/Enum)
+[![Coverage Status](https://coveralls.io/repos/github/DASPRiD/Enum/badge.svg?branch=master)](https://coveralls.io/github/DASPRiD/Enum?branch=master)
+[![Latest Stable Version](https://poser.pugx.org/dasprid/enum/v/stable)](https://packagist.org/packages/dasprid/enum)
+[![Total Downloads](https://poser.pugx.org/dasprid/enum/downloads)](https://packagist.org/packages/dasprid/enum)
+[![License](https://poser.pugx.org/dasprid/enum/license)](https://packagist.org/packages/dasprid/enum)
+
+It is a well known fact that PHP is missing a basic enum type, ignoring the rather incomplete `SplEnum` implementation
+which is only available as a PECL extension. There are also quite a few other userland enum implementations around,
+but all of them have one or another compromise. This library tries to close that gap as far as PHP allows it to.
+
+## Usage
+
+### Basics
+
+At its core, there is the `DASPRiD\Enum\AbstractEnum` class, which by default will work with constants like any other
+enum implementation you might know. The first clear difference is that you should define all the constants as protected
+(so nobody outside your class can read them but the `AbstractEnum` can still do so). The other even mightier difference
+is that, for simple enums, the value of the constant doesn't matter at all. Let's have a look at a simple example:
+
+```php
+use DASPRiD\Enum\AbstractEnum;
+
+/**
+ * @method static self MONDAY()
+ * @method static self TUESDAY()
+ * @method static self WEDNESDAY()
+ * @method static self THURSDAY()
+ * @method static self FRIDAY()
+ * @method static self SATURDAY()
+ * @method static self SUNDAY()
+ */
+final class WeekDay extends AbstractEnum
+{
+    protected const MONDAY = null;
+    protected const TUESDAY = null;
+    protected const WEDNESDAY = null;
+    protected const THURSDAY = null;
+    protected const FRIDAY = null;
+    protected const SATURDAY = null;
+    protected const SUNDAY = null;
+}
+``` 
+
+If you need to provide constants for either internal use or public use, you can mark them as either private or public,
+in which case they will be ignored by the enum, which only considers protected constants as valid values. As you can
+see, we specifically defined the generated magic methods in a class level doc block, so anyone using this class will
+automatically have proper auto-completion in their IDE. Now since you have defined the enum, you can simply use it like
+that:
+
+```php
+function tellItLikeItIs(WeekDay $weekDay)
+{
+    switch ($weekDay) {
+        case WeekDay::MONDAY():
+            echo 'Mondays are bad.';
+            break;
+            
+        case WeekDay::FRIDAY():
+            echo 'Fridays are better.';
+            break;
+            
+        case WeekDay::SATURDAY():
+        case WeekDay::SUNDAY():
+            echo 'Weekends are best.';
+            break;
+            
+        default:
+            echo 'Midweek days are so-so.';
+    }
+}
+
+tellItLikeItIs(WeekDay::MONDAY());
+tellItLikeItIs(WeekDay::WEDNESDAY());
+tellItLikeItIs(WeekDay::FRIDAY());
+tellItLikeItIs(WeekDay::SATURDAY());
+tellItLikeItIs(WeekDay::SUNDAY());
+```
+
+### More complex example
+
+Of course, all enums are singletons, which are not cloneable or serializable. Thus you can be sure that there is always
+just one instance of the same type. Of course, the values of constants are not completely useless, let's have a look at
+a more complex example:
+
+```php
+use DASPRiD\Enum\AbstractEnum;
+
+/**
+ * @method static self MERCURY()
+ * @method static self VENUS()
+ * @method static self EARTH()
+ * @method static self MARS()
+ * @method static self JUPITER()
+ * @method static self SATURN()
+ * @method static self URANUS()
+ * @method static self NEPTUNE()
+ */
+final class Planet extends AbstractEnum
+{
+    protected const MERCURY = [3.303e+23, 2.4397e6];
+    protected const VENUS = [4.869e+24, 6.0518e6];
+    protected const EARTH = [5.976e+24, 6.37814e6];
+    protected const MARS = [6.421e+23, 3.3972e6];
+    protected const JUPITER = [1.9e+27, 7.1492e7];
+    protected const SATURN = [5.688e+26, 6.0268e7];
+    protected const URANUS = [8.686e+25, 2.5559e7];
+    protected const NEPTUNE = [1.024e+26, 2.4746e7];
+    
+    /**
+     * Universal gravitational constant.
+     *
+     * @var float
+     */
+    private const G = 6.67300E-11;
+    
+    /**
+     * Mass in kilograms.
+     *
+     * @var float
+     */
+    private $mass;
+
+    /**
+     * Radius in meters.
+     *    
+     * @var float
+     */    
+    private $radius;
+    
+    protected function __construct(float $mass, float $radius)
+    {
+        $this->mass = $mass;
+        $this->radius = $radius;
+    }
+    
+    public function mass() : float
+    {
+        return $this->mass;
+    }
+    
+    public function radius() : float
+    {
+        return $this->radius; 
+    }
+    
+    public function surfaceGravity() : float
+    {
+        return self::G * $this->mass / ($this->radius * $this->radius);
+    }
+    
+    public function surfaceWeight(float $otherMass) : float
+    {
+        return $otherMass * $this->surfaceGravity();
+    }
+}
+
+$myMass = 80;
+
+foreach (Planet::values() as $planet) {
+    printf("Your weight on %s is %f\n", $planet, $planet->surfaceWeight($myMass));
+}
+```

vendor/dasprid/enum/composer.json

@@ -0,0 +1,31 @@
+{
+    "name": "dasprid/enum",
+    "description": "PHP 7.1 enum implementation",
+    "license": "BSD-2-Clause",
+    "authors": [
+        {
+            "name": "Ben Scholzen 'DASPRiD'",
+            "email": "mail@dasprids.de",
+            "homepage": "https://dasprids.de/",
+            "role": "Developer"
+        }
+    ],
+    "keywords": [
+        "enum",
+        "map"
+    ],
+    "require-dev": {
+        "phpunit/phpunit": "^7 | ^8 | ^9",
+        "squizlabs/php_codesniffer": "^3.4"
+    },
+    "autoload": {
+        "psr-4": {
+            "DASPRiD\\Enum\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "DASPRiD\\EnumTest\\": "test/"
+        }
+    }
+}

vendor/dasprid/enum/phpunit.xml.dist

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
+         bootstrap="vendor/autoload.php"
+         colors="true">
+    <testsuites>
+        <testsuite name="DASPRiD\\Enum Tests">
+            <directory>./test</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist processUncoveredFilesFromWhitelist="true">
+            <directory suffix=".php">src</directory>
+        </whitelist>
+    </filter>
+</phpunit>

vendor/dasprid/enum/src/AbstractEnum.php

@@ -0,0 +1,241 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\Enum;
+
+use DASPRiD\Enum\Exception\CloneNotSupportedException;
+use DASPRiD\Enum\Exception\IllegalArgumentException;
+use DASPRiD\Enum\Exception\MismatchException;
+use DASPRiD\Enum\Exception\SerializeNotSupportedException;
+use DASPRiD\Enum\Exception\UnserializeNotSupportedException;
+use ReflectionClass;
+
+abstract class AbstractEnum
+{
+    /**
+     * @var string
+     */
+    private $name;
+
+    /**
+     * @var int
+     */
+    private $ordinal;
+
+    /**
+     * @var array<string, array<string, static>>
+     */
+    private static $values = [];
+
+    /**
+     * @var array<string, bool>
+     */
+    private static $allValuesLoaded = [];
+
+    /**
+     * @var array<string, array>
+     */
+    private static $constants = [];
+
+    /**
+     * The constructor is private by default to avoid arbitrary enum creation.
+     *
+     * When creating your own constructor for a parameterized enum, make sure to declare it as protected, so that
+     * the static methods are able to construct it. Avoid making it public, as that would allow creation of
+     * non-singleton enum instances.
+     */
+    private function __construct()
+    {
+    }
+
+    /**
+     * Magic getter which forwards all calls to {@see self::valueOf()}.
+     *
+     * @return static
+     */
+    final public static function __callStatic(string $name, array $arguments) : self
+    {
+        return static::valueOf($name);
+    }
+
+    /**
+     * Returns an enum with the specified name.
+     *
+     * The name must match exactly an identifier used to declare an enum in this type (extraneous whitespace characters
+     * are not permitted).
+     *
+     * @return static
+     * @throws IllegalArgumentException if the enum has no constant with the specified name
+     */
+    final public static function valueOf(string $name) : self
+    {
+        if (isset(self::$values[static::class][$name])) {
+            return self::$values[static::class][$name];
+        }
+
+        $constants = self::constants();
+
+        if (array_key_exists($name, $constants)) {
+            return self::createValue($name, $constants[$name][0], $constants[$name][1]);
+        }
+
+        throw new IllegalArgumentException(sprintf('No enum constant %s::%s', static::class, $name));
+    }
+
+    /**
+     * @return static
+     */
+    private static function createValue(string $name, int $ordinal, array $arguments) : self
+    {
+        $instance = new static(...$arguments);
+        $instance->name = $name;
+        $instance->ordinal = $ordinal;
+        self::$values[static::class][$name] = $instance;
+        return $instance;
+    }
+
+    /**
+     * Obtains all possible types defined by this enum.
+     *
+     * @return static[]
+     */
+    final public static function values() : array
+    {
+        if (isset(self::$allValuesLoaded[static::class])) {
+            return self::$values[static::class];
+        }
+
+        if (! isset(self::$values[static::class])) {
+            self::$values[static::class] = [];
+        }
+
+        foreach (self::constants() as $name => $constant) {
+            if (array_key_exists($name, self::$values[static::class])) {
+                continue;
+            }
+
+            static::createValue($name, $constant[0], $constant[1]);
+        }
+
+        uasort(self::$values[static::class], function (self $a, self $b) {
+            return $a->ordinal() <=> $b->ordinal();
+        });
+
+        self::$allValuesLoaded[static::class] = true;
+        return self::$values[static::class];
+    }
+
+    private static function constants() : array
+    {
+        if (isset(self::$constants[static::class])) {
+            return self::$constants[static::class];
+        }
+
+        self::$constants[static::class] = [];
+        $reflectionClass = new ReflectionClass(static::class);
+        $ordinal = -1;
+
+        foreach ($reflectionClass->getReflectionConstants() as $reflectionConstant) {
+            if (! $reflectionConstant->isProtected()) {
+                continue;
+            }
+
+            $value = $reflectionConstant->getValue();
+
+            self::$constants[static::class][$reflectionConstant->name] = [
+                ++$ordinal,
+                is_array($value) ? $value : []
+            ];
+        }
+
+        return self::$constants[static::class];
+    }
+
+    /**
+     * Returns the name of this enum constant, exactly as declared in its enum declaration.
+     *
+     * Most programmers should use the {@see self::__toString()} method in preference to this one, as the toString
+     * method may return a more user-friendly name. This method is designed primarily for use in specialized situations
+     * where correctness depends on getting the exact name, which will not vary from release to release.
+     */
+    final public function name() : string
+    {
+        return $this->name;
+    }
+
+    /**
+     * Returns the ordinal of this enumeration constant (its position in its enum declaration, where the initial
+     * constant is assigned an ordinal of zero).
+     *
+     * Most programmers will have no use for this method. It is designed for use by sophisticated enum-based data
+     * structures.
+     */
+    final public function ordinal() : int
+    {
+        return $this->ordinal;
+    }
+
+    /**
+     * Compares this enum with the specified object for order.
+     *
+     * Returns negative integer, zero or positive integer as this object is less than, equal to or greater than the
+     * specified object.
+     *
+     * Enums are only comparable to other enums of the same type. The natural order implemented by this method is the
+     * order in which the constants are declared.
+     *
+     * @throws MismatchException if the passed enum is not of the same type
+     */
+    final public function compareTo(self $other) : int
+    {
+        if (! $other instanceof static) {
+            throw new MismatchException(sprintf(
+                'The passed enum %s is not of the same type as %s',
+                get_class($other),
+                static::class
+            ));
+        }
+
+        return $this->ordinal - $other->ordinal;
+    }
+
+    /**
+     * Forbid cloning enums.
+     *
+     * @throws CloneNotSupportedException
+     */
+    final public function __clone()
+    {
+        throw new CloneNotSupportedException();
+    }
+
+    /**
+     * Forbid serializing enums.
+     *
+     * @throws SerializeNotSupportedException
+     */
+    final public function __sleep() : array
+    {
+        throw new SerializeNotSupportedException();
+    }
+
+    /**
+     * Forbid unserializing enums.
+     *
+     * @throws UnserializeNotSupportedException
+     */
+    final public function __wakeup() : void
+    {
+        throw new UnserializeNotSupportedException();
+    }
+
+    /**
+     * Turns the enum into a string representation.
+     *
+     * You may override this method to give a more user-friendly version.
+     */
+    public function __toString() : string
+    {
+        return $this->name;
+    }
+}

vendor/dasprid/enum/src/EnumMap.php

@@ -0,0 +1,375 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\Enum;
+
+use DASPRiD\Enum\Exception\ExpectationException;
+use DASPRiD\Enum\Exception\IllegalArgumentException;
+use IteratorAggregate;
+use Serializable;
+use Traversable;
+
+/**
+ * A specialized map implementation for use with enum type keys.
+ *
+ * All of the keys in an enum map must come from a single enum type that is specified, when the map is created. Enum
+ * maps are represented internally as arrays. This representation is extremely compact and efficient.
+ *
+ * Enum maps are maintained in the natural order of their keys (the order in which the enum constants are declared).
+ * This is reflected in the iterators returned by the collection views {@see self::getIterator()} and
+ * {@see self::values()}.
+ *
+ * Iterators returned by the collection views are not consistent: They may or may not show the effects of modifications
+ * to the map that occur while the iteration is in progress.
+ */
+final class EnumMap implements Serializable, IteratorAggregate
+{
+    /**
+     * The class name of the key.
+     *
+     * @var string
+     */
+    private $keyType;
+
+    /**
+     * The type of the value.
+     *
+     * @var string
+     */
+    private $valueType;
+
+    /**
+     * @var bool
+     */
+    private $allowNullValues;
+
+    /**
+     * All of the constants comprising the enum, cached for performance.
+     *
+     * @var array<int, AbstractEnum>
+     */
+    private $keyUniverse;
+
+    /**
+     * Array representation of this map. The ith element is the value to which universe[i] is currently mapped, or null
+     * if it isn't mapped to anything, or NullValue if it's mapped to null.
+     *
+     * @var array<int, mixed>
+     */
+    private $values;
+
+    /**
+     * @var int
+     */
+    private $size = 0;
+
+    /**
+     * Creates a new enum map.
+     *
+     * @param string $keyType the type of the keys, must extend AbstractEnum
+     * @param string $valueType the type of the values
+     * @param bool $allowNullValues whether to allow null values
+     * @throws IllegalArgumentException when key type does not extend AbstractEnum
+     */
+    public function __construct(string $keyType, string $valueType, bool $allowNullValues)
+    {
+        if (! is_subclass_of($keyType, AbstractEnum::class)) {
+            throw new IllegalArgumentException(sprintf(
+                'Class %s does not extend %s',
+                $keyType,
+                AbstractEnum::class
+            ));
+        }
+
+        $this->keyType = $keyType;
+        $this->valueType = $valueType;
+        $this->allowNullValues = $allowNullValues;
+        $this->keyUniverse = $keyType::values();
+        $this->values = array_fill(0, count($this->keyUniverse), null);
+    }
+
+    /**
+     * Checks whether the map types match the supplied ones.
+     *
+     * You should call this method when an EnumMap is passed to you and you want to ensure that it's made up of the
+     * correct types.
+     *
+     * @throws ExpectationException when supplied key type mismatches local key type
+     * @throws ExpectationException when supplied value type mismatches local value type
+     * @throws ExpectationException when the supplied map allows null values, abut should not
+     */
+    public function expect(string $keyType, string $valueType, bool $allowNullValues) : void
+    {
+        if ($keyType !== $this->keyType) {
+            throw new ExpectationException(sprintf(
+                'Callee expected an EnumMap with key type %s, but got %s',
+                $keyType,
+                $this->keyType
+            ));
+        }
+
+        if ($valueType !== $this->valueType) {
+            throw new ExpectationException(sprintf(
+                'Callee expected an EnumMap with value type %s, but got %s',
+                $keyType,
+                $this->keyType
+            ));
+        }
+
+        if ($allowNullValues !== $this->allowNullValues) {
+            throw new ExpectationException(sprintf(
+                'Callee expected an EnumMap with nullable flag %s, but got %s',
+                ($allowNullValues ? 'true' : 'false'),
+                ($this->allowNullValues ? 'true' : 'false')
+            ));
+        }
+    }
+
+    /**
+     * Returns the number of key-value mappings in this map.
+     */
+    public function size() : int
+    {
+        return $this->size;
+    }
+
+    /**
+     * Returns true if this map maps one or more keys to the specified value.
+     */
+    public function containsValue($value) : bool
+    {
+        return in_array($this->maskNull($value), $this->values, true);
+    }
+
+    /**
+     * Returns true if this map contains a mapping for the specified key.
+     */
+    public function containsKey(AbstractEnum $key) : bool
+    {
+        $this->checkKeyType($key);
+        return null !== $this->values[$key->ordinal()];
+    }
+
+    /**
+     * Returns the value to which the specified key is mapped, or null if this map contains no mapping for the key.
+     *
+     * More formally, if this map contains a mapping from a key to a value, then this method returns the value;
+     * otherwise it returns null (there can be at most one such mapping).
+     *
+     * A return value of null does not necessarily indicate that the map contains no mapping for the key; it's also
+     * possible that hte map explicitly maps the key to null. The {@see self::containsKey()} operation may be used to
+     * distinguish these two cases.
+     *
+     * @return mixed
+     */
+    public function get(AbstractEnum $key)
+    {
+        $this->checkKeyType($key);
+        return $this->unmaskNull($this->values[$key->ordinal()]);
+    }
+
+    /**
+     * Associates the specified value with the specified key in this map.
+     *
+     * If the map previously contained a mapping for this key, the old value is replaced.
+     *
+     * @return mixed the previous value associated with the specified key, or null if there was no mapping for the key.
+     *               (a null return can also indicate that the map previously associated null with the specified key.)
+     * @throws IllegalArgumentException when the passed values does not match the internal value type
+     */
+    public function put(AbstractEnum $key, $value)
+    {
+        $this->checkKeyType($key);
+
+        if (! $this->isValidValue($value)) {
+            throw new IllegalArgumentException(sprintf('Value is not of type %s', $this->valueType));
+        }
+
+        $index = $key->ordinal();
+        $oldValue = $this->values[$index];
+        $this->values[$index] = $this->maskNull($value);
+
+        if (null === $oldValue) {
+            ++$this->size;
+        }
+
+        return $this->unmaskNull($oldValue);
+    }
+
+    /**
+     * Removes the mapping for this key frm this map if present.
+     *
+     * @return mixed the previous value associated with the specified key, or null if there was no mapping for the key.
+     *               (a null return can also indicate that the map previously associated null with the specified key.)
+     */
+    public function remove(AbstractEnum $key)
+    {
+        $this->checkKeyType($key);
+
+        $index = $key->ordinal();
+        $oldValue = $this->values[$index];
+        $this->values[$index] = null;
+
+        if (null !== $oldValue) {
+            --$this->size;
+        }
+
+        return $this->unmaskNull($oldValue);
+    }
+
+    /**
+     * Removes all mappings from this map.
+     */
+    public function clear() : void
+    {
+        $this->values = array_fill(0, count($this->keyUniverse), null);
+        $this->size = 0;
+    }
+
+    /**
+     * Compares the specified map with this map for quality.
+     *
+     * Returns true if the two maps represent the same mappings.
+     */
+    public function equals(self $other) : bool
+    {
+        if ($this === $other) {
+            return true;
+        }
+
+        if ($this->size !== $other->size) {
+            return false;
+        }
+
+        return $this->values === $other->values;
+    }
+
+    /**
+     * Returns the values contained in this map.
+     *
+     * The array will contain the values in the order their corresponding keys appear in the map, which is their natural
+     * order (the order in which the num constants are declared).
+     */
+    public function values() : array
+    {
+        return array_values(array_map(function ($value) {
+            return $this->unmaskNull($value);
+        }, array_filter($this->values, function ($value) : bool {
+            return null !== $value;
+        })));
+    }
+
+    public function serialize() : string
+    {
+        $values = [];
+
+        foreach ($this->values as $ordinal => $value) {
+            if (null === $value) {
+                continue;
+            }
+
+            $values[$ordinal] = $this->unmaskNull($value);
+        }
+
+        return serialize([
+            'keyType' => $this->keyType,
+            'valueType' => $this->valueType,
+            'allowNullValues' => $this->allowNullValues,
+            'values' => $values,
+        ]);
+    }
+
+    public function unserialize($serialized) : void
+    {
+        $data = unserialize($serialized);
+        $this->__construct($data['keyType'], $data['valueType'], $data['allowNullValues']);
+
+        foreach ($this->keyUniverse as $key) {
+            if (array_key_exists($key->ordinal(), $data['values'])) {
+                $this->put($key, $data['values'][$key->ordinal()]);
+            }
+        }
+    }
+
+    public function getIterator() : Traversable
+    {
+        foreach ($this->keyUniverse as $key) {
+            if (null === $this->values[$key->ordinal()]) {
+                continue;
+            }
+
+            yield $key => $this->unmaskNull($this->values[$key->ordinal()]);
+        }
+    }
+
+    private function maskNull($value)
+    {
+        if (null === $value) {
+            return NullValue::instance();
+        }
+
+        return $value;
+    }
+
+    private function unmaskNull($value)
+    {
+        if ($value instanceof NullValue) {
+            return null;
+        }
+
+        return $value;
+    }
+
+    /**
+     * @throws IllegalArgumentException when the passed key does not match the internal key type
+     */
+    private function checkKeyType(AbstractEnum $key) : void
+    {
+        if (get_class($key) !== $this->keyType) {
+            throw new IllegalArgumentException(sprintf(
+                'Object of type %s is not the same type as %s',
+                get_class($key),
+                $this->keyType
+            ));
+        }
+    }
+
+    private function isValidValue($value) : bool
+    {
+        if (null === $value) {
+            if ($this->allowNullValues) {
+                return true;
+            }
+
+            return false;
+        }
+
+        switch ($this->valueType) {
+            case 'mixed':
+                return true;
+
+            case 'bool':
+            case 'boolean':
+                return is_bool($value);
+
+            case 'int':
+            case 'integer':
+                return is_int($value);
+
+            case 'float':
+            case 'double':
+                return is_float($value);
+
+            case 'string':
+                return is_string($value);
+
+            case 'object':
+                return is_object($value);
+
+            case 'array':
+                return is_array($value);
+        }
+
+        return $value instanceof $this->valueType;
+    }
+}

vendor/dasprid/enum/src/Exception/CloneNotSupportedException.php

@@ -0,0 +1,10 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\Enum\Exception;
+
+use Exception;
+
+final class CloneNotSupportedException extends Exception implements ExceptionInterface
+{
+}

vendor/dasprid/enum/src/Exception/ExceptionInterface.php

@@ -0,0 +1,10 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\Enum\Exception;
+
+use Throwable;
+
+interface ExceptionInterface extends Throwable
+{
+}

vendor/dasprid/enum/src/Exception/ExpectationException.php

@@ -0,0 +1,10 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\Enum\Exception;
+
+use Exception;
+
+final class ExpectationException extends Exception implements ExceptionInterface
+{
+}

vendor/dasprid/enum/src/Exception/IllegalArgumentException.php

@@ -0,0 +1,10 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\Enum\Exception;
+
+use Exception;
+
+final class IllegalArgumentException extends Exception implements ExceptionInterface
+{
+}

vendor/dasprid/enum/src/Exception/MismatchException.php

@@ -0,0 +1,10 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\Enum\Exception;
+
+use Exception;
+
+final class MismatchException extends Exception implements ExceptionInterface
+{
+}

vendor/dasprid/enum/src/Exception/SerializeNotSupportedException.php

@@ -0,0 +1,10 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\Enum\Exception;
+
+use Exception;
+
+final class SerializeNotSupportedException extends Exception implements ExceptionInterface
+{
+}

vendor/dasprid/enum/src/Exception/UnserializeNotSupportedException.php

@@ -0,0 +1,10 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\Enum\Exception;
+
+use Exception;
+
+final class UnserializeNotSupportedException extends Exception implements ExceptionInterface
+{
+}

vendor/dasprid/enum/src/NullValue.php

@@ -0,0 +1,55 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\Enum;
+
+use DASPRiD\Enum\Exception\CloneNotSupportedException;
+use DASPRiD\Enum\Exception\SerializeNotSupportedException;
+use DASPRiD\Enum\Exception\UnserializeNotSupportedException;
+
+final class NullValue
+{
+    /**
+     * @var self
+     */
+    private static $instance;
+
+    private function __construct()
+    {
+    }
+
+    public static function instance() : self
+    {
+        return self::$instance ?: self::$instance = new self();
+    }
+
+    /**
+     * Forbid cloning enums.
+     *
+     * @throws CloneNotSupportedException
+     */
+    final public function __clone()
+    {
+        throw new CloneNotSupportedException();
+    }
+
+    /**
+     * Forbid serializing enums.
+     *
+     * @throws SerializeNotSupportedException
+     */
+    final public function __sleep() : array
+    {
+        throw new SerializeNotSupportedException();
+    }
+
+    /**
+     * Forbid unserializing enums.
+     *
+     * @throws UnserializeNotSupportedException
+     */
+    final public function __wakeup() : void
+    {
+        throw new UnserializeNotSupportedException();
+    }
+}

vendor/dasprid/enum/test/AbstractEnumTest.php

@@ -0,0 +1,121 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\EnumTest;
+
+use DASPRiD\Enum\AbstractEnum;
+use DASPRiD\Enum\Exception\CloneNotSupportedException;
+use DASPRiD\Enum\Exception\IllegalArgumentException;
+use DASPRiD\Enum\Exception\MismatchException;
+use DASPRiD\Enum\Exception\SerializeNotSupportedException;
+use DASPRiD\Enum\Exception\UnserializeNotSupportedException;
+use PHPUnit\Framework\TestCase;
+use ReflectionClass;
+
+final class AbstractEnumTest extends TestCase
+{
+    public function setUp(): void
+    {
+        $reflectionClass = new ReflectionClass(AbstractEnum::class);
+
+        $constantsProperty = $reflectionClass->getProperty('constants');
+        $constantsProperty->setAccessible(true);
+        $constantsProperty->setValue([]);
+
+        $valuesProperty = $reflectionClass->getProperty('values');
+        $valuesProperty->setAccessible(true);
+        $valuesProperty->setValue([]);
+
+        $allValuesLoadedProperty = $reflectionClass->getProperty('allValuesLoaded');
+        $allValuesLoadedProperty->setAccessible(true);
+        $allValuesLoadedProperty->setValue([]);
+    }
+
+    public function testToString() : void
+    {
+        $weekday = WeekDay::FRIDAY();
+        self::assertSame('FRIDAY', (string) $weekday);
+    }
+
+    public function testName() : void
+    {
+        $this->assertSame('WEDNESDAY', WeekDay::WEDNESDAY()->name());
+    }
+
+    public function testOrdinal() : void
+    {
+        $this->assertSame(2, WeekDay::WEDNESDAY()->ordinal());
+    }
+
+    public function testSameInstanceIsReturned() : void
+    {
+        self::assertSame(WeekDay::FRIDAY(), WeekDay::FRIDAY());
+    }
+
+    public static function testValueOf() : void
+    {
+        self::assertSame(WeekDay::FRIDAY(), WeekDay::valueOf('FRIDAY'));
+    }
+
+    public function testValueOfInvalidConstant() : void
+    {
+        $this->expectException(IllegalArgumentException::class);
+        WeekDay::valueOf('CATURDAY');
+    }
+
+    public function testExceptionOnCloneAttempt() : void
+    {
+        $this->expectException(CloneNotSupportedException::class);
+        clone WeekDay::FRIDAY();
+    }
+
+    public function testExceptionOnSerializeAttempt() : void
+    {
+        $this->expectException(SerializeNotSupportedException::class);
+        serialize(WeekDay::FRIDAY());
+    }
+
+    public function testExceptionOnUnserializeAttempt() : void
+    {
+        $this->expectException(UnserializeNotSupportedException::class);
+        unserialize('O:24:"DASPRiD\\EnumTest\\WeekDay":0:{}');
+    }
+
+    public function testReturnValueOfValuesIsSortedByOrdinal() : void
+    {
+        // Initialize some week days out of order
+        WeekDay::SATURDAY();
+        WeekDay::TUESDAY();
+
+        $ordinals = array_values(array_map(function (WeekDay $weekDay) : int {
+            return $weekDay->ordinal();
+        }, WeekDay::values()));
+
+        self::assertSame([0, 1, 2, 3, 4, 5, 6], $ordinals);
+
+        $cachedOrdinals = array_values(array_map(function (WeekDay $weekDay) : int {
+            return $weekDay->ordinal();
+        }, WeekDay::values()));
+        $this->assertSame($ordinals, $cachedOrdinals);
+    }
+
+    public function testCompareTo() : void
+    {
+        $this->assertSame(-4, WeekDay::WEDNESDAY()->compareTo(WeekDay::SUNDAY()));
+        $this->assertSame(4, WeekDay::SUNDAY()->compareTo(WeekDay::WEDNESDAY()));
+        $this->assertSame(0, WeekDay::WEDNESDAY()->compareTo(WeekDay::WEDNESDAY()));
+    }
+
+    public function testCompareToWrongEnum() : void
+    {
+        $this->expectException(MismatchException::class);
+        WeekDay::MONDAY()->compareTo(Planet::EARTH());
+    }
+
+    public function testParameterizedEnum() : void
+    {
+        $planet = Planet::EARTH();
+        $this->assertSame(5.976e+24, $planet->mass());
+        $this->assertSame(6.37814e6, $planet->radius());
+    }
+}

vendor/dasprid/enum/test/EnumMapTest.php

@@ -0,0 +1,243 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\EnumTest;
+
+use DASPRiD\Enum\EnumMap;
+use DASPRiD\Enum\Exception\ExpectationException;
+use DASPRiD\Enum\Exception\IllegalArgumentException;
+use PHPUnit\Framework\TestCase;
+use stdClass;
+
+final class EnumMapTest extends TestCase
+{
+    public function testConstructionWithInvalidEnumType() : void
+    {
+        $this->expectException(IllegalArgumentException::class);
+        new EnumMap(stdClass::class, 'string', false);
+    }
+
+    public function testUnexpectedKeyType() : void
+    {
+        $this->expectException(ExpectationException::class);
+        $map = new EnumMap(WeekDay::class, 'string', false);
+        $map->expect(Planet::class, 'string', false);
+    }
+
+    public function testUnexpectedValueType() : void
+    {
+        $this->expectException(ExpectationException::class);
+        $map = new EnumMap(WeekDay::class, 'string', false);
+        $map->expect(WeekDay::class, 'int', false);
+    }
+
+    public function testUnexpectedNullableValueType() : void
+    {
+        $this->expectException(ExpectationException::class);
+        $map = new EnumMap(WeekDay::class, 'string', true);
+        $map->expect(WeekDay::class, 'string', false);
+    }
+
+    public function testExpectedTypes() : void
+    {
+        $map = new EnumMap(WeekDay::class, 'string', true);
+        $map->expect(WeekDay::class, 'string', true);
+        $this->addToAssertionCount(1);
+    }
+
+    public function testSize() : void
+    {
+        $map = new EnumMap(WeekDay::class, 'string', true);
+        $this->assertSame(0, $map->size());
+        $map->put(WeekDay::MONDAY(), 'foo');
+        $this->assertSame(1, $map->size());
+    }
+
+    public function testContainsValue() : void
+    {
+        $map = new EnumMap(WeekDay::class, 'string', true);
+        $this->assertFalse($map->containsValue('foo'));
+        $map->put(WeekDay::TUESDAY(), 'foo');
+        $this->assertTrue($map->containsValue('foo'));
+        $this->assertFalse($map->containsValue(null));
+        $map->put(WeekDay::WEDNESDAY(), null);
+        $this->assertTrue($map->containsValue(null));
+    }
+
+    public function testContainsKey() : void
+    {
+        $map = new EnumMap(WeekDay::class, 'string', true);
+        $this->assertFalse($map->containsKey(WeekDay::TUESDAY()));
+        $map->put(WeekDay::TUESDAY(), 'foo');
+        $this->assertTrue($map->containsKey(WeekDay::TUESDAY()));
+        $map->put(WeekDay::WEDNESDAY(), null);
+        $this->assertTrue($map->containsKey(WeekDay::WEDNESDAY()));
+    }
+
+    public function testPutAndGet() : void
+    {
+        $map = new EnumMap(WeekDay::class, 'string', true);
+        $map->put(WeekDay::TUESDAY(), 'foo');
+        $map->put(WeekDay::FRIDAY(), null);
+        $this->assertSame('foo', $map->get(WeekDay::TUESDAY()));
+        $this->assertSame(null, $map->get(WeekDay::WEDNESDAY()));
+        $this->assertSame(null, $map->get(WeekDay::FRIDAY()));
+    }
+
+    public function testPutInvalidKey() : void
+    {
+        $this->expectException(IllegalArgumentException::class);
+        $map = new EnumMap(WeekDay::class, 'string', true);
+        $map->put(Planet::MARS(), 'foo');
+    }
+
+    public function invalidValues() : array
+    {
+        return [
+            ['bool', null, false],
+            ['bool', 0],
+            ['boolean', 0],
+            ['int', 2.4],
+            ['integer', 5.3],
+            ['float', 3],
+            ['double', 7],
+            ['string', 1],
+            ['object', 1],
+            ['array', 1],
+            [stdClass::class, 1],
+        ];
+    }
+
+    /**
+     * @dataProvider invalidValues
+     * @param mixed $value
+     */
+    public function testPutInvalidValue(string $valueType, $value, bool $allowNull = true) : void
+    {
+        $this->expectException(IllegalArgumentException::class);
+        $map = new EnumMap(WeekDay::class, $valueType, $allowNull);
+        $map->put(WeekDay::TUESDAY(), $value);
+    }
+
+    public function validValues() : array
+    {
+        return [
+            ['bool', null],
+            ['mixed', 'foo'],
+            ['mixed', 1],
+            ['mixed', new stdClass()],
+            ['bool', true],
+            ['boolean', false],
+            ['int', 1],
+            ['integer', 4],
+            ['float', 2.5],
+            ['double', 6.4],
+            ['string', 'foo'],
+            ['object', new stdClass()],
+            ['array', ['foo']],
+            [stdClass::class, new stdClass()],
+        ];
+    }
+
+    /**
+     * @dataProvider validValues
+     * @param mixed $value
+     */
+    public function testPutValidValue(string $valueType, $value, bool $allowNull = true) : void
+    {
+        $map = new EnumMap(WeekDay::class, $valueType, $allowNull);
+        $map->put(WeekDay::TUESDAY(), $value);
+        $this->addToAssertionCount(1);
+    }
+
+    public function testRemove() : void
+    {
+        $map = new EnumMap(WeekDay::class, 'string', true);
+        $map->put(WeekDay::TUESDAY(), 'foo');
+        $map->remove(WeekDay::TUESDAY());
+        $map->remove(WeekDay::WEDNESDAY());
+        $this->assertSame(null, $map->get(WeekDay::TUESDAY()));
+        $this->assertSame(0, $map->size());
+    }
+
+    public function testClear() : void
+    {
+        $map = new EnumMap(WeekDay::class, 'string', true);
+        $map->put(WeekDay::TUESDAY(), 'foo');
+        $map->clear();
+        $this->assertSame(null, $map->get(WeekDay::TUESDAY()));
+        $this->assertSame(0, $map->size());
+    }
+
+    public function testEqualsWithSameInstance() : void
+    {
+        $map = new EnumMap(WeekDay::class, 'string', true);
+        $this->assertTrue($map->equals($map));
+    }
+
+    public function testEqualsWithDifferentSize() : void
+    {
+        $mapA = new EnumMap(WeekDay::class, 'string', true);
+        $mapB = new EnumMap(WeekDay::class, 'string', true);
+        $mapB->put(WeekDay::MONDAY(), 'foo');
+
+        $this->assertFalse($mapA->equals($mapB));
+    }
+
+    public function testEqualsWithDifferentValues() : void
+    {
+        $mapA = new EnumMap(WeekDay::class, 'string', true);
+        $mapA->put(WeekDay::MONDAY(), 'foo');
+        $mapB = new EnumMap(WeekDay::class, 'string', true);
+        $mapB->put(WeekDay::MONDAY(), 'bar');
+
+        $this->assertFalse($mapA->equals($mapB));
+    }
+
+    public function testEqualsWithDifferentConstants() : void
+    {
+        $mapA = new EnumMap(WeekDay::class, 'string', true);
+        $mapA->put(WeekDay::MONDAY(), 'foo');
+        $mapB = new EnumMap(WeekDay::class, 'string', true);
+        $mapB->put(WeekDay::TUESDAY(), 'foo');
+
+        $this->assertFalse($mapA->equals($mapB));
+    }
+
+    public function testValues() : void
+    {
+        $map = new EnumMap(WeekDay::class, 'string', true);
+        $this->assertSame([], $map->values());
+
+        $map->put(WeekDay::FRIDAY(), 'foo');
+        $map->put(WeekDay::TUESDAY(), 'bar');
+        $map->put(WeekDay::SUNDAY(), null);
+
+        $this->assertSame(['bar', 'foo', null], $map->values());
+    }
+
+    public function testSerializeAndUnserialize() : void
+    {
+        $mapA = new EnumMap(WeekDay::class, 'string', true);
+        $mapA->put(WeekDay::MONDAY(), 'foo');
+        $mapB = unserialize(serialize($mapA));
+
+        $this->assertTrue($mapA->equals($mapB));
+    }
+
+    public function testIterator() : void
+    {
+        $map = new EnumMap(WeekDay::class, 'string', true);
+        $map->put(WeekDay::FRIDAY(), 'foo');
+        $map->put(WeekDay::TUESDAY(), 'bar');
+        $map->put(WeekDay::SUNDAY(), null);
+
+        $result = [];
+
+        foreach ($map as $key => $value) {
+            $result[$key->ordinal()] = $value;
+        }
+
+        $this->assertSame([1 => 'bar', 4 => 'foo', 6 => null], $result);
+    }
+}

vendor/dasprid/enum/test/NullValueTest.php

@@ -0,0 +1,31 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\EnumTest;
+
+use DASPRiD\Enum\Exception\CloneNotSupportedException;
+use DASPRiD\Enum\Exception\SerializeNotSupportedException;
+use DASPRiD\Enum\Exception\UnserializeNotSupportedException;
+use DASPRiD\Enum\NullValue;
+use PHPUnit\Framework\TestCase;
+
+final class NullValueTest extends TestCase
+{
+    public function testExceptionOnCloneAttempt() : void
+    {
+        $this->expectException(CloneNotSupportedException::class);
+        clone NullValue::instance();
+    }
+
+    public function testExceptionOnSerializeAttempt() : void
+    {
+        $this->expectException(SerializeNotSupportedException::class);
+        serialize(NullValue::instance());
+    }
+
+    public function testExceptionOnUnserializeAttempt() : void
+    {
+        $this->expectException(UnserializeNotSupportedException::class);
+        unserialize('O:22:"DASPRiD\\Enum\\NullValue":0:{}');
+    }
+}

vendor/dasprid/enum/test/Planet.php

@@ -0,0 +1,73 @@
+<?php
+declare(strict_types = 1);
+
+namespace DASPRiD\EnumTest;
+
+use DASPRiD\Enum\AbstractEnum;
+
+/**
+ * @method static self MERCURY()
+ * @method static self VENUS()
+ * @method static self EARTH()
+ * @method static self MARS()
+ * @method static self JUPITER()
+ * @method static self SATURN()
+ * @method static self URANUS()
+ * @method static self NEPTUNE()
+ */
+final class Planet extends AbstractEnum
+{
+    protected const MERCURY = [3.303e+23, 2.4397e6];
+    protected const VENUS = [4.869e+24, 6.0518e6];
+    protected const EARTH = [5.976e+24, 6.37814e6];
+    protected const MARS = [6.421e+23, 3.3972e6];
+    protected const JUPITER = [1.9e+27, 7.1492e7];
+    protected const SATURN = [5.688e+26, 6.0268e7];
+    protected const URANUS = [8.686e+25, 2.5559e7];
+    protected const NEPTUNE = [1.024e+26, 2.4746e7];
+
+    /**
+     * Universal gravitational constant.
+     */
+    private const G = 6.67300E-11;
+
+    /**
+     * Mass in kilograms.
+     *
+     * @var float
+     */
+    private $mass;
+
+    /**
+     * Radius in meters.
+     *
+     * @var float
+     */
+    private $radius;
+
+    protected function __construct(float $mass, float $radius)
+    {
+        $this->mass = $mass;
+        $this->radius = $radius;
+    }
+
+    public function mass() : float
+    {
+        return $this->mass;
+    }
+
+    public function radius() : float
+    {
+        return $this->radius;
+    }
+
+    public function surfaceGravity() : float
+    {
+        return self::G * $this->mass / ($this->radius * $this->radius);
+    }
+
+    public function surfaceWeight(float $otherMass) : float
+    {
+        return $otherMass * $this->surfaceGravity();
+    }
+}