--- /dev/null
+<?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;
+
+/**
+ * FilecontentFilterIterator filters files by their contents using patterns (regexps or strings).
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ * @author Włodzimierz Gajda <gajdaw@gajdaw.pl>
+ */
+class FilecontentFilterIterator extends MultiplePcreFilterIterator
+{
+ /**
+ * Filters the iterator values.
+ *
+ * @return bool true if the value should be kept, false otherwise
+ */
+ public function accept()
+ {
+ if (!$this->matchRegexps && !$this->noMatchRegexps) {
+ return true;
+ }
+
+ $fileinfo = $this->current();
+
+ if ($fileinfo->isDir() || !$fileinfo->isReadable()) {
+ return false;
+ }
+
+ $content = $fileinfo->getContents();
+ if (!$content) {
+ return false;
+ }
+
+ return $this->isAccepted($content);
+ }
+
+ /**
+ * Converts string to regexp if necessary.
+ *
+ * @param string $str Pattern: string or regexp
+ *
+ * @return string regexp corresponding to a given string or regexp
+ */
+ protected function toRegex($str)
+ {
+ return $this->isRegex($str) ? $str : '/'.preg_quote($str, '/').'/';
+ }
+}