142 lines
3.7 KiB
PHP
142 lines
3.7 KiB
PHP
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<?php
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/**
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* URL utility class
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*
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* This class provides methods to deal with encoding and decoding url (percent encoded) strings.
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*
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* It was not possible to use PHP's built-in methods for this, because some clients don't like
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* encoding of certain characters.
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*
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* Specifically, it was found that GVFS (gnome's webdav client) does not like encoding of ( and
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* ). Since these are reserved, but don't have a reserved meaning in url, these characters are
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* kept as-is.
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*
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* @package Sabre
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* @subpackage DAV
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* @copyright Copyright (C) 2007-2011 Rooftop Solutions. All rights reserved.
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* @author Evert Pot (http://www.rooftopsolutions.nl/)
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* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
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*/
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class Sabre_DAV_URLUtil {
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/**
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* Encodes the path of a url.
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*
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* slashes (/) are treated as path-separators.
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*
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* @param string $path
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* @return string
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*/
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static function encodePath($path) {
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$path = explode('/',$path);
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return implode('/',array_map(array('Sabre_DAV_URLUtil','encodePathSegment'), $path));
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}
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/**
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* Encodes a 1 segment of a path
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*
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* Slashes are considered part of the name, and are encoded as %2f
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*
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* @param string $pathSegment
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* @return string
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*/
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static function encodePathSegment($pathSegment) {
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$newStr = '';
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for($i=0;$i<strlen($pathSegment);$i++) {
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$c = ord($pathSegment[$i]);
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if(
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/* Unreserved chacaters */
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($c>=0x41 /* A */ && $c<=0x5a /* Z */) ||
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($c>=0x61 /* a */ && $c<=0x7a /* z */) ||
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($c>=0x30 /* 0 */ && $c<=0x39 /* 9 */) ||
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$c===0x5f /* _ */ ||
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$c===0x2d /* - */ ||
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$c===0x2e /* . */ ||
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$c===0x7E /* ~ */ ||
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/* Reserved, but no reserved purpose */
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$c===0x28 /* ( */ ||
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$c===0x29 /* ) */
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) {
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$newStr.=$pathSegment[$i];
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} else {
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$newStr.='%' . str_pad(dechex($c), 2, '0', STR_PAD_LEFT);
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}
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}
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return $newStr;
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}
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/**
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* Decodes a url-encoded path
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*
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* @param string $path
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* @return string
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*/
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static function decodePath($path) {
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return self::decodePathSegment($path);
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}
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/**
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* Decodes a url-encoded path segment
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*
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* @param string $path
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* @return string
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*/
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static function decodePathSegment($path) {
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$path = urldecode($path);
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$encoding = mb_detect_encoding($path, array('UTF-8','ISO-8859-1'));
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switch($encoding) {
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case 'ISO-8859-1' :
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$path = utf8_encode($path);
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}
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return $path;
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}
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/**
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* Returns the 'dirname' and 'basename' for a path.
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*
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* The reason there is a custom function for this purpose, is because
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* basename() is locale aware (behaviour changes if C locale or a UTF-8 locale is used)
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* and we need a method that just operates on UTF-8 characters.
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*
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* In addition basename and dirname are platform aware, and will treat backslash (\) as a
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* directory separator on windows.
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*
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* This method returns the 2 components as an array.
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*
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* If there is no dirname, it will return an empty string. Any / appearing at the end of the
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* string is stripped off.
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*
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* @param string $path
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* @return array
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*/
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static function splitPath($path) {
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$matches = array();
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if(preg_match('/^(?:(?:(.*)(?:\/+))?([^\/]+))(?:\/?)$/u',$path,$matches)) {
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return array($matches[1],$matches[2]);
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} else {
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return array(null,null);
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}
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}
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}
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