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61 lines
1.5 KiB
61 lines
1.5 KiB
1 year ago
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<?php
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/*
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* This file is part of composer/pcre.
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*
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* (c) Composer <https://github.com/composer>
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*
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* For the full copyright and license information, please view
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* the LICENSE file that was distributed with this source code.
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*/
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namespace Composer\Pcre;
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class PcreException extends \RuntimeException
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{
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/**
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* @param string $function
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* @param string|string[] $pattern
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* @return self
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*/
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public static function fromFunction($function, $pattern)
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{
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$code = preg_last_error();
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if (is_array($pattern)) {
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$pattern = implode(', ', $pattern);
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}
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return new PcreException($function.'(): failed executing "'.$pattern.'": '.self::pcreLastErrorMessage($code), $code);
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}
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/**
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* @param int $code
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* @return string
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*/
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private static function pcreLastErrorMessage($code)
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{
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if (function_exists('preg_last_error_msg')) {
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return preg_last_error_msg();
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}
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// older php versions did not set the code properly in all cases
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if (PHP_VERSION_ID < 70201 && $code === 0) {
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return 'UNDEFINED_ERROR';
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}
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$constants = get_defined_constants(true);
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if (!isset($constants['pcre'])) {
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return 'UNDEFINED_ERROR';
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}
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foreach ($constants['pcre'] as $const => $val) {
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if ($val === $code && substr($const, -6) === '_ERROR') {
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return $const;
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}
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}
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return 'UNDEFINED_ERROR';
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}
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}
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