File size: 3,245 Bytes
e4f4821 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 |
<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Finder\Iterator;
/**
* MultiplePcreFilterIterator filters files using patterns (regexps, globs or strings).
*
* @author Fabien Potencier <fabien@symfony.com>
*
* @template-covariant TKey
* @template-covariant TValue
*
* @extends \FilterIterator<TKey, TValue>
*/
abstract class MultiplePcreFilterIterator extends \FilterIterator
{
protected $matchRegexps = [];
protected $noMatchRegexps = [];
/**
* @param \Iterator $iterator The Iterator to filter
* @param string[] $matchPatterns An array of patterns that need to match
* @param string[] $noMatchPatterns An array of patterns that need to not match
*/
public function __construct(\Iterator $iterator, array $matchPatterns, array $noMatchPatterns)
{
foreach ($matchPatterns as $pattern) {
$this->matchRegexps[] = $this->toRegex($pattern);
}
foreach ($noMatchPatterns as $pattern) {
$this->noMatchRegexps[] = $this->toRegex($pattern);
}
parent::__construct($iterator);
}
/**
* Checks whether the string is accepted by the regex filters.
*
* If there is no regexps defined in the class, this method will accept the string.
* Such case can be handled by child classes before calling the method if they want to
* apply a different behavior.
*
* @return bool
*/
protected function isAccepted(string $string)
{
// should at least not match one rule to exclude
foreach ($this->noMatchRegexps as $regex) {
if (preg_match($regex, $string)) {
return false;
}
}
// should at least match one rule
if ($this->matchRegexps) {
foreach ($this->matchRegexps as $regex) {
if (preg_match($regex, $string)) {
return true;
}
}
return false;
}
// If there is no match rules, the file is accepted
return true;
}
/**
* Checks whether the string is a regex.
*
* @return bool
*/
protected function isRegex(string $str)
{
$availableModifiers = 'imsxuADU';
if (\PHP_VERSION_ID >= 80200) {
$availableModifiers .= 'n';
}
if (preg_match('/^(.{3,}?)['.$availableModifiers.']*$/', $str, $m)) {
$start = substr($m[1], 0, 1);
$end = substr($m[1], -1);
if ($start === $end) {
return !preg_match('/[*?[:alnum:] \\\\]/', $start);
}
foreach ([['{', '}'], ['(', ')'], ['[', ']'], ['<', '>']] as $delimiters) {
if ($start === $delimiters[0] && $end === $delimiters[1]) {
return true;
}
}
}
return false;
}
/**
* Converts string into regexp.
*
* @return string
*/
abstract protected function toRegex(string $str);
}
|