Version 1

[yaffs-website] / vendor / symfony / finder / Iterator / MultiplePcreFilterIterator.php

diff --git a/vendor/symfony/finder/Iterator/MultiplePcreFilterIterator.php b/vendor/symfony/finder/Iterator/MultiplePcreFilterIterator.php
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+++ b/vendor/symfony/finder/Iterator/MultiplePcreFilterIterator.php
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+<?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>
+ */
+abstract class MultiplePcreFilterIterator extends FilterIterator
+{
+    protected $matchRegexps = array();
+    protected $noMatchRegexps = array();
+
+    /**
+     * Constructor.
+     *
+     * @param \Iterator $iterator        The Iterator to filter
+     * @param array     $matchPatterns   An array of patterns that need to match
+     * @param array     $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.
+     *
+     * @param string $string The string to be matched against filters
+     *
+     * @return bool
+     */
+    protected function isAccepted($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.
+     *
+     * @param string $str
+     *
+     * @return bool Whether the given string is a regex
+     */
+    protected function isRegex($str)
+    {
+        if (preg_match('/^(.{3,}?)[imsxuADU]*$/', $str, $m)) {
+            $start = substr($m[1], 0, 1);
+            $end = substr($m[1], -1);
+
+            if ($start === $end) {
+                return !preg_match('/[*?[:alnum:] \\\\]/', $start);
+            }
+
+            foreach (array(array('{', '}'), array('(', ')'), array('[', ']'), array('<', '>')) as $delimiters) {
+                if ($start === $delimiters[0] && $end === $delimiters[1]) {
+                    return true;
+                }
+            }
+        }
+
+        return false;
+    }
+
+    /**
+     * Converts string into regexp.
+     *
+     * @param string $str Pattern
+     *
+     * @return string regexp corresponding to a given string
+     */
+    abstract protected function toRegex($str);
+}