Viewing file:  PcreException.php (1.48 KB) -rw-r--r--
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<?php
/*
* This file is part of composer/pcre.
*
* (c) Composer <https://github.com/composer>
*
* For the full copyright and license information, please view
* the LICENSE file that was distributed with this source code.
*/
namespace Composer\Pcre;
class PcreException extends \RuntimeException
{
/**
* @param string $function
* @param string|string[] $pattern
* @return self
*/
public static function fromFunction($function, $pattern)
{
$code = preg_last_error();
if (is_array($pattern)) {
$pattern = implode(', ', $pattern);
}
return new PcreException($function.'(): failed executing "'.$pattern.'": '.self::pcreLastErrorMessage($code), $code);
}
/**
* @param int $code
* @return string
*/
private static function pcreLastErrorMessage($code)
{
if (function_exists('preg_last_error_msg')) {
return preg_last_error_msg();
}
// older php versions did not set the code properly in all cases
if (PHP_VERSION_ID < 70201 && $code === 0) {
return 'UNDEFINED_ERROR';
}
$constants = get_defined_constants(true);
if (!isset($constants['pcre'])) {
return 'UNDEFINED_ERROR';
}
foreach ($constants['pcre'] as $const => $val) {
if ($val === $code && substr($const, -6) === '_ERROR') {
return $const;
}
}
return 'UNDEFINED_ERROR';
}
}
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