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+<?php
+
+namespace OldSabre\DAV;
+
+/**
+ * URL utility class
+ *
+ * This class provides methods to deal with encoding and decoding url (percent encoded) strings.
+ *
+ * It was not possible to use PHP's built-in methods for this, because some clients don't like
+ * encoding of certain characters.
+ *
+ * Specifically, it was found that GVFS (gnome's webdav client) does not like encoding of ( and
+ * ). Since these are reserved, but don't have a reserved meaning in url, these characters are
+ * kept as-is.
+ *
+ * It was also discovered that versions of the SOGO connector for thunderbird
+ * has issues with urlencoded colons.
+ *
+ * @copyright Copyright (C) 2007-2015 fruux GmbH (https://fruux.com/).
+ * @author Evert Pot (http://evertpot.com/)
+ * @license http://sabre.io/license/ Modified BSD License
+ */
+class URLUtil {
+
+ /**
+ * Encodes the path of a url.
+ *
+ * slashes (/) are treated as path-separators.
+ *
+ * @param string $path
+ * @return string
+ */
+ static function encodePath($path) {
+
+ return preg_replace_callback('/([^A-Za-z0-9_\-\.~\(\)\/:])/',function($match) {
+
+ return '%'.sprintf('%02x',ord($match[0]));
+
+ }, $path);
+
+ }
+
+ /**
+ * Encodes a 1 segment of a path
+ *
+ * Slashes are considered part of the name, and are encoded as %2f
+ *
+ * @param string $pathSegment
+ * @return string
+ */
+ static function encodePathSegment($pathSegment) {
+
+ return preg_replace_callback('/([^A-Za-z0-9_\-\.~\(\):])/',function($match) {
+
+ return '%'.sprintf('%02x',ord($match[0]));
+
+ }, $pathSegment);
+ }
+
+ /**
+ * Decodes a url-encoded path
+ *
+ * @param string $path
+ * @return string
+ */
+ static function decodePath($path) {
+
+ return self::decodePathSegment($path);
+
+ }
+
+ /**
+ * Decodes a url-encoded path segment
+ *
+ * @param string $path
+ * @return string
+ */
+ static function decodePathSegment($path) {
+
+ $path = rawurldecode($path);
+ $encoding = mb_detect_encoding($path, array('UTF-8','ISO-8859-1'));
+
+ switch($encoding) {
+
+ case 'ISO-8859-1' :
+ $path = utf8_encode($path);
+
+ }
+
+ return $path;
+
+ }
+
+ /**
+ * Returns the 'dirname' and 'basename' for a path.
+ *
+ * The reason there is a custom function for this purpose, is because
+ * basename() is locale aware (behaviour changes if C locale or a UTF-8 locale is used)
+ * and we need a method that just operates on UTF-8 characters.
+ *
+ * In addition basename and dirname are platform aware, and will treat backslash (\) as a
+ * directory separator on windows.
+ *
+ * This method returns the 2 components as an array.
+ *
+ * If there is no dirname, it will return an empty string. Any / appearing at the end of the
+ * string is stripped off.
+ *
+ * @param string $path
+ * @return array
+ */
+ static function splitPath($path) {
+
+ $matches = array();
+ if(preg_match('/^(?:(?:(.*)(?:\/+))?([^\/]+))(?:\/?)$/u',$path,$matches)) {
+ return array($matches[1],$matches[2]);
+ } else {
+ return array(null,null);
+ }
+
+ }
+
+}

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