WebKitSite/blog/wp-includes/atomlib.php - WebKit - Git at Google

 <?php
 /**
  * Atom Syndication Format PHP Library
  *
  * @package AtomLib
  * @link http://code.google.com/p/phpatomlib/
  *
  * @author Elias Torres <elias@torrez.us>
  * @version 0.4
  * @since 2.3
  */

 /**
  * Structure that store common Atom Feed Properties
  *
  * @package AtomLib
  */
 class AtomFeed {
 	/**
 	 * Stores Links
 	 * @var array
 	 * @access public
 	 */
     var $links = array();
     /**
      * Stores Categories
      * @var array
      * @access public
      */
     var $categories = array();
 	/**
 	 * Stores Entries
 	 *
 	 * @var array
 	 * @access public
 	 */
     var $entries = array();
 }

 /**
  * Structure that store Atom Entry Properties
  *
  * @package AtomLib
  */
 class AtomEntry {
 	/**
 	 * Stores Links
 	 * @var array
 	 * @access public
 	 */
     var $links = array();
     /**
      * Stores Categories
      * @var array
 	 * @access public
      */
     var $categories = array();
 }

 /**
  * AtomLib Atom Parser API
  *
  * @package AtomLib
  */
 class AtomParser {

     var $NS = 'http://www.w3.org/2005/Atom';
     var $ATOM_CONTENT_ELEMENTS = array('content','summary','title','subtitle','rights');
     var $ATOM_SIMPLE_ELEMENTS = array('id','updated','published','draft');

     var $debug = false;

     var $depth = 0;
     var $indent = 2;
     var $in_content;
     var $ns_contexts = array();
     var $ns_decls = array();
     var $content_ns_decls = array();
     var $content_ns_contexts = array();
     var $is_xhtml = false;
     var $is_html = false;
     var $is_text = true;
     var $skipped_div = false;

     var $FILE = "php://input";

     var $feed;
     var $current;

     function AtomParser() {

         $this->feed = new AtomFeed();
         $this->current = null;
         $this->map_attrs_func = create_function('$k,$v', 'return "$k=\"$v\"";');
         $this->map_xmlns_func = create_function('$p,$n', '$xd = "xmlns"; if(strlen($n[0])>0) $xd .= ":{$n[0]}"; return "{$xd}=\"{$n[1]}\"";');
     }

     function _p($msg) {
         if($this->debug) {
             print str_repeat(" ", $this->depth * $this->indent) . $msg ."\n";
         }
     }

     function error_handler($log_level, $log_text, $error_file, $error_line) {
         $this->error = $log_text;
     }

     function parse() {

         set_error_handler(array(&$this, 'error_handler'));

         array_unshift($this->ns_contexts, array());

         $parser = xml_parser_create_ns();
         xml_set_object($parser, $this);
         xml_set_element_handler($parser, "start_element", "end_element");
         xml_parser_set_option($parser,XML_OPTION_CASE_FOLDING,0);
         xml_parser_set_option($parser,XML_OPTION_SKIP_WHITE,0);
         xml_set_character_data_handler($parser, "cdata");
         xml_set_default_handler($parser, "_default");
         xml_set_start_namespace_decl_handler($parser, "start_ns");
         xml_set_end_namespace_decl_handler($parser, "end_ns");

         $this->content = '';

         $ret = true;

         $fp = fopen($this->FILE, "r");
         while ($data = fread($fp, 4096)) {
             if($this->debug) $this->content .= $data;

             if(!xml_parse($parser, $data, feof($fp))) {
                 trigger_error(sprintf(__('XML error: %s at line %d')."\n",
                     xml_error_string(xml_get_error_code($xml_parser)),
                     xml_get_current_line_number($xml_parser)));
                 $ret = false;
                 break;
             }
         }
         fclose($fp);

         xml_parser_free($parser);

         restore_error_handler();

         return $ret;
     }

     function start_element($parser, $name, $attrs) {

         $tag = array_pop(split(":", $name));

         switch($name) {
             case $this->NS . ':feed':
                 $this->current = $this->feed;
                 break;
             case $this->NS . ':entry':
                 $this->current = new AtomEntry();
                 break;
         };

         $this->_p("start_element('$name')");
         #$this->_p(print_r($this->ns_contexts,true));
         #$this->_p('current(' . $this->current . ')');

         array_unshift($this->ns_contexts, $this->ns_decls);

         $this->depth++;

         if(!empty($this->in_content)) {

             $this->content_ns_decls = array();

             if($this->is_html || $this->is_text)
                 trigger_error("Invalid content in element found. Content must not be of type text or html if it contains markup.");

             $attrs_prefix = array();

             // resolve prefixes for attributes
             foreach($attrs as $key => $value) {
                 $with_prefix = $this->ns_to_prefix($key, true);
                 $attrs_prefix[$with_prefix[1]] = $this->xml_escape($value);
             }

             $attrs_str = join(' ', array_map($this->map_attrs_func, array_keys($attrs_prefix), array_values($attrs_prefix)));
             if(strlen($attrs_str) > 0) {
                 $attrs_str = " " . $attrs_str;
             }

             $with_prefix = $this->ns_to_prefix($name);

             if(!$this->is_declared_content_ns($with_prefix[0])) {
                 array_push($this->content_ns_decls, $with_prefix[0]);
             }

             $xmlns_str = '';
             if(count($this->content_ns_decls) > 0) {
                 array_unshift($this->content_ns_contexts, $this->content_ns_decls);
                 $xmlns_str .= join(' ', array_map($this->map_xmlns_func, array_keys($this->content_ns_contexts[0]), array_values($this->content_ns_contexts[0])));
                 if(strlen($xmlns_str) > 0) {
                     $xmlns_str = " " . $xmlns_str;
                 }
             }

             array_push($this->in_content, array($tag, $this->depth, "<". $with_prefix[1] ."{$xmlns_str}{$attrs_str}" . ">"));

         } else if(in_array($tag, $this->ATOM_CONTENT_ELEMENTS) || in_array($tag, $this->ATOM_SIMPLE_ELEMENTS)) {
             $this->in_content = array();
             $this->is_xhtml = $attrs['type'] == 'xhtml';
             $this->is_html = $attrs['type'] == 'html' || $attrs['type'] == 'text/html';
             $this->is_text = !in_array('type',array_keys($attrs)) || $attrs['type'] == 'text';
             $type = $this->is_xhtml ? 'XHTML' : ($this->is_html ? 'HTML' : ($this->is_text ? 'TEXT' : $attrs['type']));

             if(in_array('src',array_keys($attrs))) {
                 $this->current->$tag = $attrs;
             } else {
                 array_push($this->in_content, array($tag,$this->depth, $type));
             }
         } else if($tag == 'link') {
             array_push($this->current->links, $attrs);
         } else if($tag == 'category') {
             array_push($this->current->categories, $attrs);
         }

         $this->ns_decls = array();
     }

     function end_element($parser, $name) {

         $tag = array_pop(split(":", $name));

         $ccount = count($this->in_content);

         # if we are *in* content, then let's proceed to serialize it
         if(!empty($this->in_content)) {
             # if we are ending the original content element
             # then let's finalize the content
             if($this->in_content[0][0] == $tag &&
                 $this->in_content[0][1] == $this->depth) {
                 $origtype = $this->in_content[0][2];
                 array_shift($this->in_content);
                 $newcontent = array();
                 foreach($this->in_content as $c) {
                     if(count($c) == 3) {
                         array_push($newcontent, $c[2]);
                     } else {
                         if($this->is_xhtml || $this->is_text) {
                             array_push($newcontent, $this->xml_escape($c));
                         } else {
                             array_push($newcontent, $c);
                         }
                     }
                 }
                 if(in_array($tag, $this->ATOM_CONTENT_ELEMENTS)) {
                     $this->current->$tag = array($origtype, join('',$newcontent));
                 } else {
                     $this->current->$tag = join('',$newcontent);
                 }
                 $this->in_content = array();
             } else if($this->in_content[$ccount-1][0] == $tag &&
                 $this->in_content[$ccount-1][1] == $this->depth) {
                 $this->in_content[$ccount-1][2] = substr($this->in_content[$ccount-1][2],0,-1) . "/>";
             } else {
                 # else, just finalize the current element's content
                 $endtag = $this->ns_to_prefix($name);
                 array_push($this->in_content, array($tag, $this->depth, "</$endtag[1]>"));
             }
         }

         array_shift($this->ns_contexts);

         $this->depth--;

         if($name == ($this->NS . ':entry')) {
             array_push($this->feed->entries, $this->current);
             $this->current = null;
         }

         $this->_p("end_element('$name')");
     }

     function start_ns($parser, $prefix, $uri) {
         $this->_p("starting: " . $prefix . ":" . $uri);
         array_push($this->ns_decls, array($prefix,$uri));
     }

     function end_ns($parser, $prefix) {
         $this->_p("ending: #" . $prefix . "#");
     }

     function cdata($parser, $data) {
         $this->_p("data: #" . str_replace(array("\n"), array("\\n"), trim($data)) . "#");
         if(!empty($this->in_content)) {
             array_push($this->in_content, $data);
         }
     }

     function _default($parser, $data) {
         # when does this gets called?
     }


     function ns_to_prefix($qname, $attr=false) {
         # split 'http://www.w3.org/1999/xhtml:div' into ('http','//www.w3.org/1999/xhtml','div')
         $components = split(":", $qname);

         # grab the last one (e.g 'div')
         $name = array_pop($components);

         if(!empty($components)) {
             # re-join back the namespace component
             $ns = join(":",$components);
             foreach($this->ns_contexts as $context) {
                 foreach($context as $mapping) {
                     if($mapping[1] == $ns && strlen($mapping[0]) > 0) {
                         return array($mapping, "$mapping[0]:$name");
                     }
                 }
             }
         }

         if($attr) {
             return array(null, $name);
         } else {
             foreach($this->ns_contexts as $context) {
                 foreach($context as $mapping) {
                     if(strlen($mapping[0]) == 0) {
                         return array($mapping, $name);
                     }
                 }
             }
         }
     }

     function is_declared_content_ns($new_mapping) {
         foreach($this->content_ns_contexts as $context) {
             foreach($context as $mapping) {
                 if($new_mapping == $mapping) {
                     return true;
                 }
             }
         }
         return false;
     }

     function xml_escape($string)
     {
              return str_replace(array('&','"',"'",'<','>'),
                 array('&amp;','&quot;','&apos;','&lt;','&gt;'),
                 $string );
     }
 }

 ?>
	<?php
	/**
	* Atom Syndication Format PHP Library
	*
	* @package AtomLib
	* @link http://code.google.com/p/phpatomlib/
	*
	* @author Elias Torres <elias@torrez.us>
	* @version 0.4
	* @since 2.3
	*/

	/**
	* Structure that store common Atom Feed Properties
	*
	* @package AtomLib
	*/
	class AtomFeed {
	/**
	* Stores Links
	* @var array
	* @access public
	*/
	var $links = array();
	/**
	* Stores Categories
	* @var array
	* @access public
	*/
	var $categories = array();
	/**
	* Stores Entries
	*
	* @var array
	* @access public
	*/
	var $entries = array();
	}

	/**
	* Structure that store Atom Entry Properties
	*
	* @package AtomLib
	*/
	class AtomEntry {
	/**
	* Stores Links
	* @var array
	* @access public
	*/
	var $links = array();
	/**
	* Stores Categories
	* @var array
	* @access public
	*/
	var $categories = array();
	}

	/**
	* AtomLib Atom Parser API
	*
	* @package AtomLib
	*/
	class AtomParser {

	var $NS = 'http://www.w3.org/2005/Atom';
	var $ATOM_CONTENT_ELEMENTS = array('content','summary','title','subtitle','rights');
	var $ATOM_SIMPLE_ELEMENTS = array('id','updated','published','draft');

	var $debug = false;

	var $depth = 0;
	var $indent = 2;
	var $in_content;
	var $ns_contexts = array();
	var $ns_decls = array();
	var $content_ns_decls = array();
	var $content_ns_contexts = array();
	var $is_xhtml = false;
	var $is_html = false;
	var $is_text = true;
	var $skipped_div = false;

	var $FILE = "php://input";

	var $feed;
	var $current;

	function AtomParser() {

	$this->feed = new AtomFeed();
	$this->current = null;
	$this->map_attrs_func = create_function('$k,$v', 'return "$k=\"$v\"";');
	$this->map_xmlns_func = create_function('$p,$n', '$xd = "xmlns"; if(strlen($n[0])>0) $xd .= ":{$n[0]}"; return "{$xd}=\"{$n[1]}\"";');
	}

	function _p($msg) {
	if($this->debug) {
	print str_repeat(" ", $this->depth * $this->indent) . $msg ."\n";
	}
	}

	function error_handler($log_level, $log_text, $error_file, $error_line) {
	$this->error = $log_text;
	}

	function parse() {

	set_error_handler(array(&$this, 'error_handler'));

	array_unshift($this->ns_contexts, array());

	$parser = xml_parser_create_ns();
	xml_set_object($parser, $this);
	xml_set_element_handler($parser, "start_element", "end_element");
	xml_parser_set_option($parser,XML_OPTION_CASE_FOLDING,0);
	xml_parser_set_option($parser,XML_OPTION_SKIP_WHITE,0);
	xml_set_character_data_handler($parser, "cdata");
	xml_set_default_handler($parser, "_default");
	xml_set_start_namespace_decl_handler($parser, "start_ns");
	xml_set_end_namespace_decl_handler($parser, "end_ns");

	$this->content = '';

	$ret = true;

	$fp = fopen($this->FILE, "r");
	while ($data = fread($fp, 4096)) {
	if($this->debug) $this->content .= $data;

	if(!xml_parse($parser, $data, feof($fp))) {
	trigger_error(sprintf(__('XML error: %s at line %d')."\n",
	xml_error_string(xml_get_error_code($xml_parser)),
	xml_get_current_line_number($xml_parser)));
	$ret = false;
	break;
	}
	}
	fclose($fp);

	xml_parser_free($parser);

	restore_error_handler();

	return $ret;
	}

	function start_element($parser, $name, $attrs) {

	$tag = array_pop(split(":", $name));

	switch($name) {
	case $this->NS . ':feed':
	$this->current = $this->feed;
	break;
	case $this->NS . ':entry':
	$this->current = new AtomEntry();
	break;
	};

	$this->_p("start_element('$name')");
	#$this->_p(print_r($this->ns_contexts,true));
	#$this->_p('current(' . $this->current . ')');

	array_unshift($this->ns_contexts, $this->ns_decls);

	$this->depth++;

	if(!empty($this->in_content)) {

	$this->content_ns_decls = array();

	if($this->is_html \|\| $this->is_text)
	trigger_error("Invalid content in element found. Content must not be of type text or html if it contains markup.");

	$attrs_prefix = array();

	// resolve prefixes for attributes
	foreach($attrs as $key => $value) {
	$with_prefix = $this->ns_to_prefix($key, true);
	$attrs_prefix[$with_prefix[1]] = $this->xml_escape($value);
	}

	$attrs_str = join(' ', array_map($this->map_attrs_func, array_keys($attrs_prefix), array_values($attrs_prefix)));
	if(strlen($attrs_str) > 0) {
	$attrs_str = " " . $attrs_str;
	}

	$with_prefix = $this->ns_to_prefix($name);

	if(!$this->is_declared_content_ns($with_prefix[0])) {
	array_push($this->content_ns_decls, $with_prefix[0]);
	}

	$xmlns_str = '';
	if(count($this->content_ns_decls) > 0) {
	array_unshift($this->content_ns_contexts, $this->content_ns_decls);
	$xmlns_str .= join(' ', array_map($this->map_xmlns_func, array_keys($this->content_ns_contexts[0]), array_values($this->content_ns_contexts[0])));
	if(strlen($xmlns_str) > 0) {
	$xmlns_str = " " . $xmlns_str;
	}
	}

	array_push($this->in_content, array($tag, $this->depth, "<". $with_prefix[1] ."{$xmlns_str}{$attrs_str}" . ">"));

	} else if(in_array($tag, $this->ATOM_CONTENT_ELEMENTS) \|\| in_array($tag, $this->ATOM_SIMPLE_ELEMENTS)) {
	$this->in_content = array();
	$this->is_xhtml = $attrs['type'] == 'xhtml';
	$this->is_html = $attrs['type'] == 'html' \|\| $attrs['type'] == 'text/html';
	$this->is_text = !in_array('type',array_keys($attrs)) \|\| $attrs['type'] == 'text';
	$type = $this->is_xhtml ? 'XHTML' : ($this->is_html ? 'HTML' : ($this->is_text ? 'TEXT' : $attrs['type']));

	if(in_array('src',array_keys($attrs))) {
	$this->current->$tag = $attrs;
	} else {
	array_push($this->in_content, array($tag,$this->depth, $type));
	}
	} else if($tag == 'link') {
	array_push($this->current->links, $attrs);
	} else if($tag == 'category') {
	array_push($this->current->categories, $attrs);
	}

	$this->ns_decls = array();
	}

	function end_element($parser, $name) {

	$tag = array_pop(split(":", $name));

	$ccount = count($this->in_content);

	# if we are in content, then let's proceed to serialize it
	if(!empty($this->in_content)) {
	# if we are ending the original content element
	# then let's finalize the content
	if($this->in_content[0][0] == $tag &&
	$this->in_content[0][1] == $this->depth) {
	$origtype = $this->in_content[0][2];
	array_shift($this->in_content);
	$newcontent = array();
	foreach($this->in_content as $c) {
	if(count($c) == 3) {
	array_push($newcontent, $c[2]);
	} else {
	if($this->is_xhtml \|\| $this->is_text) {
	array_push($newcontent, $this->xml_escape($c));
	} else {
	array_push($newcontent, $c);
	}
	}
	}
	if(in_array($tag, $this->ATOM_CONTENT_ELEMENTS)) {
	$this->current->$tag = array($origtype, join('',$newcontent));
	} else {
	$this->current->$tag = join('',$newcontent);
	}
	$this->in_content = array();
	} else if($this->in_content[$ccount-1][0] == $tag &&
	$this->in_content[$ccount-1][1] == $this->depth) {
	$this->in_content[$ccount-1][2] = substr($this->in_content[$ccount-1][2],0,-1) . "/>";
	} else {
	# else, just finalize the current element's content
	$endtag = $this->ns_to_prefix($name);
	array_push($this->in_content, array($tag, $this->depth, "</$endtag[1]>"));
	}
	}

	array_shift($this->ns_contexts);

	$this->depth--;

	if($name == ($this->NS . ':entry')) {
	array_push($this->feed->entries, $this->current);
	$this->current = null;
	}

	$this->_p("end_element('$name')");
	}

	function start_ns($parser, $prefix, $uri) {
	$this->_p("starting: " . $prefix . ":" . $uri);
	array_push($this->ns_decls, array($prefix,$uri));
	}

	function end_ns($parser, $prefix) {
	$this->_p("ending: #" . $prefix . "#");
	}

	function cdata($parser, $data) {
	$this->_p("data: #" . str_replace(array("\n"), array("\\n"), trim($data)) . "#");
	if(!empty($this->in_content)) {
	array_push($this->in_content, $data);
	}
	}

	function _default($parser, $data) {
	# when does this gets called?
	}


	function ns_to_prefix($qname, $attr=false) {
	# split 'http://www.w3.org/1999/xhtml:div' into ('http','//www.w3.org/1999/xhtml','div')
	$components = split(":", $qname);

	# grab the last one (e.g 'div')
	$name = array_pop($components);

	if(!empty($components)) {
	# re-join back the namespace component
	$ns = join(":",$components);
	foreach($this->ns_contexts as $context) {
	foreach($context as $mapping) {
	if($mapping[1] == $ns && strlen($mapping[0]) > 0) {
	return array($mapping, "$mapping[0]:$name");
	}
	}
	}
	}

	if($attr) {
	return array(null, $name);
	} else {
	foreach($this->ns_contexts as $context) {
	foreach($context as $mapping) {
	if(strlen($mapping[0]) == 0) {
	return array($mapping, $name);
	}
	}
	}
	}
	}

	function is_declared_content_ns($new_mapping) {
	foreach($this->content_ns_contexts as $context) {
	foreach($context as $mapping) {
	if($new_mapping == $mapping) {
	return true;
	}
	}
	}
	return false;
	}

	function xml_escape($string)
	{
	return str_replace(array('&','"',"'",'<','>'),
	array('&','"',''','<','>'),
	$string );
	}
	}

	?>