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<?php
// +----------------------------------------------------------------------+
// | PHP Version 4 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997-2003 The PHP Group |
// +----------------------------------------------------------------------+
// | This source file is subject to version 2.02 of the PHP license, |
// | that is bundled with this package in the file LICENSE, and is |
// | available at through the world-wide-web at |
// | http://www.php.net/license/2_02.txt. |
// | If you did not receive a copy of the PHP license and are unable to |
// | obtain it through the world-wide-web, please send a note to |
// | license@php.net so we can mail you a copy immediately. |
// +----------------------------------------------------------------------+
// | Authors: Hartmut Holzgraefe <hholzgra@php.net> |
// | Christian Stocker <chregu@bitflux.ch> |
// +----------------------------------------------------------------------+
//
// $Id: _parse_propfind.php,v 1.2 2006/04/14 02:50:10 jablko Exp $
/**
* helper class for parsing PROPFIND request bodies
*
* @package HTTP_WebDAV_Server
* @author Hartmut Holzgraefe <hholzgra@php.net>
* @version 0.99.1dev
*/
class _parse_propfind
{
/**
* success state flag
*
* @var bool
* @access public
*/
var $success = false;
/**
* found properties are collected here
*
* @var array
* @access public
*/
var $props = false;
/**
* internal tag nesting depth counter
*
* @var int
* @access private
*/
var $depth = 0;
/**
* constructor
*
* @access public
*/
function _parse_propfind($input)
{
// success state flag
$this->success = true;
// property storage array
$this->props = array();
// internal tag depth counter
$this->depth = 0;
// remember if any input was parsed
$had_input = false;
// open input stream
$handle = fopen($input, 'r');
if (!$handle) {
$this->success = false;
return;
}
// create XML parser
$parser = xml_parser_create_ns('UTF-8', ' ');
// set tag and data handlers
xml_set_element_handler($parser, array(&$this, '_startElement'),
array(&$this, '_endElement'));
// we want a case sensitive parser
xml_parser_set_option($parser, XML_OPTION_CASE_FOLDING, false);
// parse input
while ($this->success && !feof($handle)) {
$line = fgets($handle);
if (is_string($line)) {
$had_input = true;
$this->success &= xml_parse($parser, $line, false);
}
}
// finish parsing
if ($had_input) {
$this->success &= xml_parse($parser, '', true);
}
// free parser
xml_parser_free($parser);
// close input stream
fclose($handle);
// if no input was parsed it was a request
if (empty($this->props)) {
$this->props = 'allprop';
}
}
/**
* start tag handler
*
* @access private
* @param resource parser
* @param string tag name
* @param array tag attributes
*/
function _startElement($parser, $name, $attrs)
{
// name space handling
if (strstr($name, ' ')) {
list ($ns, $name) = explode(' ', $name);
if (!$ns) {
$this->success = false;
}
}
// special tags at level 1: <allprop> and <propname>
if ($this->depth == 1) {
if ($name == 'allprop' || $name == 'propname') {
$this->props = $name;
}
}
// requested properties are found at level 2
if ($this->depth == 2) {
$prop = array('name' => $name);
if ($ns) {
$prop['ns'] = $ns;
}
$this->props[] = $prop;
}
// increment depth count
$this->depth++;
}
/**
* end tag handler
*
* @access private
* @param resource parser
* @param string tag name
*/
function _endElement($parser, $name)
{
// here we only need to decrement the depth count
$this->depth--;
}
}
?>
|
