forked from leftypol/leftypol
41 lines
1.2 KiB
PHP
41 lines
1.2 KiB
PHP
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<?php
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namespace Vichan\Service\Media;
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use Mimey\MimeTypes;
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use Vichan\Data\ImageMetadataResult;
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class MagickImageMetadataReader implements ImageMetadataReader {
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private string $prefix;
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private MimeTypes $mime_types;
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public static function createImageMagickReader(MimeTypes $mime_types): MagickImageMetadataReader {
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return new self('', $mime_types);
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}
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public static function createGraphicsMagickReader(MimeTypes $mime_types): MagickImageMetadataReader {
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return new self('gm ', $mime_types);
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}
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private function __construct(string $prefix, MimeTypes $mime_types) {
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$this->prefix = $prefix;
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$this->mime_types = $mime_types;
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}
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public function getMetadata(string $file_path): ImageMetadataResult {
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$arg = escapeshellarg("$file_path[0]");
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$ret_exec = shell_exec_error("{$this->prefix}identify -format \"%w %h %m\" $arg");
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if (!\is_string($ret_exec)) {
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throw new \RuntimeException("Error while executing identify");
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}
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$ret_match = \preg_match('/^(\d+) (\d+) ([\w\d]+)$/', $ret_exec, $m);
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if (!$ret_match) {
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throw new \RuntimeException("Could not parse identify output");
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}
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$mime = $this->mime_types->getMimeType($m[3]) ?? 'application/octet-stream';
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return new ImageMetadataResult($m[1], $m[2], $mime);
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}
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}
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