_parse_propfind.php

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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 2004/01/05 12:33:22 hholzgra Exp $
//
 
class _parse_propfind 
{
        var $success = false;
 
        var $props = false;
 
        var $depth = 0;
 
        
        function _parse_propfind($path) 
        {
                // 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
                $f_in = fopen($path, "r");
                if (!$f_in) {
                        $this->success = false;
                        return;
                }
 
                // create XML parser
                $xml_parser = xml_parser_create_ns("UTF-8", " ");
 
                // set tag and data handlers
                xml_set_element_handler($xml_parser,
                                                                array(&$this, "_startElement"),
                                                                array(&$this, "_endElement"));
 
                // we want a case sensitive parser
                xml_parser_set_option($xml_parser, 
                                                          XML_OPTION_CASE_FOLDING, false);
 
 
                // parse input
                while($this->success && !feof($f_in)) {
                        $line = fgets($f_in);
                        if (is_string($line)) {
                                $had_input = true;
                                $this->success &= xml_parse($xml_parser, $line, false);
                        }
                } 
                
                // finish parsing
                if($had_input) {
                        $this->success &= xml_parse($xml_parser, "", true);
                }
 
                // free parser
                xml_parser_free($xml_parser);
                
                // close input stream
                fclose($f_in);
 
                // if no input was parsed it was a request
                if(!count($this->props)) $this->props = "all"; // default
        }
        
 
        function _startElement($parser, $name, $attrs) 
        {
                // name space handling
                if (strstr($name, " ")) {
                        list($ns, $tag) = explode(" ", $name);
                        if ($ns == "")
                                $this->success = false;
                } else {
                        $ns = "";
                        $tag = $name;
                }
 
                // special tags at level 1: <allprop> and <propname>
                if ($this->depth == 1) {
                        if ($tag == "allprop")
                                $this->props = "all";
 
                        if ($tag == "propname")
                                $this->props = "names";
                }
 
                // requested properties are found at level 2
                if ($this->depth == 2) {
                        $prop = array("name" => $tag);
                        if ($ns)
                                $prop["xmlns"] = $ns;
                        $this->props[] = $prop;
                }
 
                // increment depth count
                $this->depth++;
        }
        
 
        function _endElement($parser, $name) 
        {
                // here we only need to decrement the depth count
                $this->depth--;
        }
}
 
 
?>