mirror of https://github.com/vdm-io/tcpdf.git
108 lines
2.8 KiB
PHP
108 lines
2.8 KiB
PHP
<?php
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/**
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* Helper class to execute magick via shell
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*
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* @author Philippe Jausions
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* @license http://www.gnu.org/copyleft/lesser.html GNU-LGPL v3 (see LICENSE.TXT)
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*/
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namespace Tecnickcom\TCPDF\Tests;
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use LogicException;
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use RuntimeException;
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class ImageMagick
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{
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/**
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* @var string|null Path to magick as shell argument
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*/
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private $magick = null;
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/**
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* @var bool
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*/
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private $verbose;
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/**
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* @var string
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*/
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private $magickVersionInfo;
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/**
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* @param string $magick Path to ImageMagick `magick` executable
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* @param bool $verbose
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*/
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public function __construct(
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$magick,
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$verbose = false
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) {
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$this->magick = escapeshellarg($magick);
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$this->verbose = $verbose;
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}
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/**
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* @return string pdfinfo version information (multiline information)
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* @throws LogicException
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* @throws RuntimeException
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*/
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public function getMagickVersionInfo()
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{
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if (null === $this->magick) {
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throw new LogicException('No path to magick. Provide it to ImageMagick PHP class constructor.');
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}
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if (null === $this->magickVersionInfo) {
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$exec = sprintf('%s -version 2>&1', $this->magick);
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if ($this->verbose) {
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echo $exec . PHP_EOL;
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}
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exec($exec, $output, $resultCode);
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if (0 !== $resultCode && 99 !== $resultCode) {
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throw new RuntimeException('Execution failed: ' . $exec);
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}
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$this->magickVersionInfo = implode(PHP_EOL, $output);
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}
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return $this->magickVersionInfo;
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}
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/**
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* @param string $file1 Path to image to compare
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* @param string $file2 Path to image to compare
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* @return bool
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* @throws LogicException
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*/
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public function areSimilar($file1, $file2)
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{
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if (null === $this->magick) {
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throw new LogicException('No path to magick. Provide it to ' . __CLASS__ . ' PHP class constructor.');
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}
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$exec = implode(' ', array(
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$this->magick,
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'compare',
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'-metric MAE',
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escapeshellarg($file1),
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escapeshellarg($file2),
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'null:',
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' 2>&1',
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));
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if ($this->verbose) {
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echo $exec . PHP_EOL;
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}
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exec($exec, $output, $resultCode);
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$result = implode(PHP_EOL, $output);
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if ($this->verbose) {
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echo $result . PHP_EOL;
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}
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if (0 !== $resultCode) {
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if (!preg_match('/^[-0-9.e]+\s+\([-0-9.e]+\)$/', $result)) {
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throw new RuntimeException(
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'An error occurred with magick compare command' . PHP_EOL
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. $result,
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$resultCode
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);
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}
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}
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return '0 (0)' === $result;
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}
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}
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