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<?php
/**
* 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.
*
* @package Sabre
* @subpackage DAV
* @copyright Copyright (C) 2007-2012 Rooftop Solutions. All rights reserved.
* @author Evert Pot (http://www.rooftopsolutions.nl/)
* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
*/
class Sabre_DAV_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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