init

include/HTTP_WebDAV_Server/Tools/_parse_propfind.php

@@ -0,0 +1,178 @@
+<?php
+//
+// +----------------------------------------------------------------------+
+// | PHP Version 4                                                        |
+// +----------------------------------------------------------------------+
+// | Copyright (c) 1997-2003 The PHP Group                                |
+// +----------------------------------------------------------------------+
+// | This source file is subject to version 3.0 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/3_0.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>                       |
+// +----------------------------------------------------------------------+
+//
+
+//
+
+/**
+ * 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 $depth = 0;
+
+	
+	/**
+	 * constructor
+	 *
+	 * @access public
+	 */
+	function _parse_propfind($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)) $this->props = "all"; // default
+	}
+	
+
+	/**
+	 * start tag handler
+	 * 
+	 * @access private
+	 * @param  resource  parser
+	 * @param  string    tag name
+	 * @param  array     tag attributes
+	 */
+	function _startElement($parser, $name, $attrs) 
+	{
+		// name space handling
+		if (strstr($name, " ")) {
+			list($ns, $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
+		$this->depth++;
+	}
+	
+
+	/**
+	 * end tag handler
+	 * 
+	 * @access private
+	 * @param  resource  parser
+	 * @param  string    tag name
+	 */
+	function _endElement($parser, $name) 
+	{
+		// here we only need to decrement the depth count
+		$this->depth--;
+	}
+}
+
+
+?>