73 lines
1.7 KiB
PHP
73 lines
1.7 KiB
PHP
<?php
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namespace Kirby\Sane;
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use Kirby\Exception\InvalidArgumentException;
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/**
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* Sane handler for gzip-compressed SVGZ files
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* @since 3.5.4
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*
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* @package Kirby Sane
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* @author Lukas Bestle <lukas@getkirby.com>
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* @link https://getkirby.com
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* @copyright Bastian Allgeier
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* @license https://opensource.org/licenses/MIT
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*/
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class Svgz extends Svg
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{
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/**
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* Sanitizes the given string
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*
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* @param string $string
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* @return string
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*
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* @throws \Kirby\Exception\InvalidArgumentException If the file couldn't be parsed or recompressed
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*/
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public static function sanitize(string $string): string
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{
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$string = static::uncompress($string);
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$string = parent::sanitize($string);
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$string = @gzencode($string);
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if (is_string($string) !== true) {
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throw new InvalidArgumentException('Could not recompress gzip data'); // @codeCoverageIgnore
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}
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return $string;
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}
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/**
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* Validates file contents
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*
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* @param string $string
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* @return void
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*
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* @throws \Kirby\Exception\InvalidArgumentException If the file couldn't be parsed
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* @throws \Kirby\Exception\InvalidArgumentException If the file didn't pass validation
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*/
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public static function validate(string $string): void
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{
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parent::validate(static::uncompress($string));
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}
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/**
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* Uncompresses the SVGZ data
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*
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* @param string $string
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* @return string
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*/
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protected static function uncompress(string $string): string
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{
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// only support uncompressed files up to 10 MB to
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// prevent gzip bombs from crashing the process
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$string = @gzdecode($string, 10000000);
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if (is_string($string) !== true) {
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throw new InvalidArgumentException('Could not uncompress gzip data');
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}
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return $string;
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}
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}
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