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Decoders
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Editing: HeaderDecoder.php
<?php declare(strict_types=1); namespace Intervention\Gif\Decoders; use Intervention\Gif\Exceptions\DecoderException; use Intervention\Gif\Blocks\Header; class HeaderDecoder extends AbstractDecoder { /** * Decode current sourc * * @throws DecoderException * @return Header */ public function decode(): Header { $header = new Header(); $header->setVersion($this->decodeVersion()); return $header; } /** * Decode version string * * @throws DecoderException * @return string */ protected function decodeVersion(): string { $parsed = (bool) preg_match("/^GIF(?P<version>[0-9]{2}[a-z])$/", $this->getNextBytesOrFail(6), $matches); if ($parsed === false) { throw new DecoderException('Unable to parse file header.'); } return $matches['version']; } }
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