diff resources/render/jkl-parsexml.js @ 0:0b8d8ce99f46 default tip

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author Daiki KINJYO <e085722@ie.u-ryukyu.ac.jp>
date Mon, 14 Feb 2011 17:06:56 +0900
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/resources/render/jkl-parsexml.js	Mon Feb 14 17:06:56 2011 +0900
@@ -0,0 +1,676 @@
+// ================================================================
+//  jkl-parsexml.js ---- JavaScript Kantan Library for Parsing XML
+//  Copyright 2005-2007 Kawasaki Yusuke <u-suke@kawa.net>
+//  http://www.kawa.net/works/js/jkl/parsexml.html
+// ================================================================
+//  v0.01  2005/05/18  first release
+//  v0.02  2005/05/20  Opera 8.0beta may be abailable but somtimes crashed
+//  v0.03  2005/05/20  overrideMimeType( "text/xml" );
+//  v0.04  2005/05/21  class variables: REQUEST_TYPE, RESPONSE_TYPE
+//  v0.05  2005/05/22  use Msxml2.DOMDocument.5.0 for GET method on IE6
+//  v0.06  2005/05/22  CDATA_SECTION_NODE
+//  v0.07  2005/05/23  use Microsoft.XMLDOM for GET method on IE6
+//  v0.10  2005/10/11  new function: JKL.ParseXML.HTTP.responseText()
+//  v0.11  2005/10/13  new sub class: JKL.ParseXML.Text, JSON and DOM.
+//  v0.12  2005/10/14  new sub class: JKL.ParseXML.CSV and CSVmap.
+//  v0.13  2005/10/28  bug fixed: TEXT_NODE regexp for white spaces
+//  v0.14  2005/11/06  bug fixed: TEXT_NODE regexp at Safari
+//  v0.15  2005/11/08  bug fixed: JKL.ParseXML.CSV.async() method
+//  v0.16  2005/11/15  new sub class: LoadVars, and UTF-8 text on Safari
+//  v0.18  2005/11/16  improve: UTF-8 text file on Safari
+//  v0.19  2006/02/03  use XMLHTTPRequest instead of ActiveX on IE7,iCab
+//  v0.20  2006/03/22  (skipped)
+//  v0.21  2006/11/30  use ActiveX again on IE7
+//  v0.22  2007/01/04  JKL.ParseXML.JSON.parseResponse() updated
+// ================================================================
+
+if ( typeof(JKL) == 'undefined' ) JKL = function() {};
+
+// ================================================================
+//  class: JKL.ParseXML 
+
+JKL.ParseXML = function ( url, query, method ) {
+	// debug.print( "new JKL.ParseXML( '"+url+"', '"+query+"', '"+method+"' );" );
+	this.http = new JKL.ParseXML.HTTP( url, query, method, false );
+	return this;
+};
+
+// ================================================================
+//  class variables
+
+JKL.ParseXML.VERSION = "0.22";
+JKL.ParseXML.MIME_TYPE_XML  = "text/xml";
+JKL.ParseXML.MAP_NODETYPE = [
+"",
+	"ELEMENT_NODE",                 // 1
+	"ATTRIBUTE_NODE",               // 2
+	"TEXT_NODE",                    // 3
+	"CDATA_SECTION_NODE",           // 4
+	"ENTITY_REFERENCE_NODE",        // 5
+	"ENTITY_NODE",                  // 6
+	"PROCESSING_INSTRUCTION_NODE",  // 7
+	"COMMENT_NODE",                 // 8
+	"DOCUMENT_NODE",                // 9
+	"DOCUMENT_TYPE_NODE",           // 10
+	"DOCUMENT_FRAGMENT_NODE",       // 11
+	"NOTATION_NODE"                 // 12
+	];
+
+	// ================================================================
+	//  define callback function (ajax)
+
+	JKL.ParseXML.prototype.async = function ( func, args ) {
+		this.callback_func = func;      // callback function
+		this.callback_arg  = args;      // first argument
+	};
+
+JKL.ParseXML.prototype.onerror = function ( func, args ) {
+	this.onerror_func = func;       // callback function
+};
+
+// ================================================================
+//  method: parse()
+//  return: parsed object
+//  Download a file from remote server and parse it.
+
+JKL.ParseXML.prototype.parse = function () {
+	if ( ! this.http ) return;
+
+	// set onerror call back 
+	if ( this.onerror_func ) {
+		this.http.onerror( this.onerror_func );
+	}
+
+	if ( this.callback_func ) {                             // async mode
+		var copy = this;
+		var proc = function() {
+			if ( ! copy.http ) return;
+			var data = copy.parseResponse();
+			copy.callback_func( data, copy.callback_arg );  // call back
+		};
+		this.http.async( proc );
+	}
+
+	this.http.load();
+
+	if ( ! this.callback_func ) {                           // sync mode
+		var data = this.parseResponse();
+		return data;
+	}
+};
+
+// ================================================================
+//  every child/children into array
+JKL.ParseXML.prototype.setOutputArrayAll = function () {
+	this.setOutputArray( true );
+}
+//  a child into scalar, children into array
+JKL.ParseXML.prototype.setOutputArrayAuto = function () {
+	this.setOutputArray( null );
+}
+//  every child/children into scalar (first sibiling only)
+JKL.ParseXML.prototype.setOutputArrayNever = function () {
+	this.setOutputArray( false );
+}
+//  specified child/children into array, other child/children into scalar
+JKL.ParseXML.prototype.setOutputArrayElements = function ( list ) {
+	this.setOutputArray( list );
+}
+//  specify how to treate child/children into scalar/array
+JKL.ParseXML.prototype.setOutputArray = function ( mode ) {
+	if ( typeof(mode) == "string" ) {
+		mode = [ mode ];                // string into array
+	}
+	if ( mode && typeof(mode) == "object" ) {
+		if ( mode.length < 0 ) {
+			mode = false;               // false when array == [] 
+		} else {
+			var hash = {};
+			for( var i=0; i<mode.length; i++ ) {
+				hash[mode[i]] = true;
+			}
+			mode = hash;                // array into hashed array
+			if ( mode["*"] ) {
+				mode = true;            // true when includes "*"
+			}
+		} 
+	} 
+	this.usearray = mode;
+}
+
+// ================================================================
+//  method: parseResponse()
+
+JKL.ParseXML.prototype.parseResponse = function () {
+	var root = this.http.documentElement();
+	var data = this.parseDocument( root );
+	return data;
+}
+
+// ================================================================
+//  convert from DOM root node to JavaScript Object 
+//  method: parseElement( rootElement )
+
+JKL.ParseXML.prototype.parseDocument = function ( root ) {
+	// debug.print( "parseDocument: "+root );
+	if ( ! root ) return;
+
+	var ret = this.parseElement( root );            // parse root node
+	// debug.print( "parsed: "+ret );
+
+	if ( this.usearray == true ) {                  // always into array
+		ret = [ ret ];
+	} else if ( this.usearray == false ) {          // always into scalar
+		//
+	} else if ( this.usearray == null ) {           // automatic
+		//
+	} else if ( this.usearray[root.nodeName] ) {    // specified tag
+		ret = [ ret ];
+	}
+
+	var json = {};
+	json[root.nodeName] = ret;                      // root nodeName
+	return json;
+};
+
+// ================================================================
+//  convert from DOM Element to JavaScript Object 
+//  method: parseElement( element )
+
+JKL.ParseXML.prototype.parseElement = function ( elem ) {
+	// debug.print( "nodeType: "+JKL.ParseXML.MAP_NODETYPE[elem.nodeType]+" <"+elem.nodeName+">" );
+
+	//  COMMENT_NODE
+
+	if ( elem.nodeType == 7 ) {
+		return;
+	}
+
+	//  TEXT_NODE CDATA_SECTION_NODE
+
+	if ( elem.nodeType == 3 || elem.nodeType == 4 ) {
+		// var bool = elem.nodeValue.match( /[^\u0000-\u0020]/ );
+		var bool = elem.nodeValue.match( /[^\x00-\x20]/ ); // for Safari
+		if ( bool == null ) return;     // ignore white spaces
+		// debug.print( "TEXT_NODE: "+elem.nodeValue.length+ " "+bool );
+		return elem.nodeValue;
+	}
+
+	var retval;
+	var cnt = {};
+
+	//  parse attributes
+
+	if ( elem.attributes && elem.attributes.length ) {
+		retval = {};
+		for ( var i=0; i<elem.attributes.length; i++ ) {
+			var key = elem.attributes[i].nodeName;
+			if ( typeof(key) != "string" ) continue;
+			var val = elem.attributes[i].nodeValue;
+			if ( ! val ) continue;
+			if ( typeof(cnt[key]) == "undefined" ) cnt[key] = 0;
+			cnt[key] ++;
+			this.addNode( retval, key, cnt[key], val );
+		}
+	}
+
+	//  parse child nodes (recursive)
+
+	if ( elem.childNodes && elem.childNodes.length ) {
+		var textonly = true;
+		if ( retval ) textonly = false;        // some attributes exists
+		for ( var i=0; i<elem.childNodes.length && textonly; i++ ) {
+			var ntype = elem.childNodes[i].nodeType;
+			if ( ntype == 3 || ntype == 4 ) continue;
+			textonly = false;
+		}
+		if ( textonly ) {
+			if ( ! retval ) retval = "";
+			for ( var i=0; i<elem.childNodes.length; i++ ) {
+				retval += elem.childNodes[i].nodeValue;
+			}
+		} else {
+			if ( ! retval ) retval = {};
+			for ( var i=0; i<elem.childNodes.length; i++ ) {
+				var key = elem.childNodes[i].nodeName;
+				if ( typeof(key) != "string" ) continue;
+				var val = this.parseElement( elem.childNodes[i] );
+				if ( ! val ) continue;
+				if ( typeof(cnt[key]) == "undefined" ) cnt[key] = 0;
+				cnt[key] ++;
+				this.addNode( retval, key, cnt[key], val );
+			}
+		}
+	}
+	return retval;
+};
+
+// ================================================================
+//  method: addNode( hash, key, count, value )
+
+JKL.ParseXML.prototype.addNode = function ( hash, key, cnts, val ) {
+	if ( this.usearray == true ) {              // into array
+		if ( cnts == 1 ) hash[key] = [];
+		hash[key][hash[key].length] = val;      // push
+	} else if ( this.usearray == false ) {      // into scalar
+		if ( cnts == 1 ) hash[key] = val;       // only 1st sibling
+	} else if ( this.usearray == null ) {
+		if ( cnts == 1 ) {                      // 1st sibling
+			hash[key] = val;
+		} else if ( cnts == 2 ) {               // 2nd sibling
+			hash[key] = [ hash[key], val ];
+		} else {                                // 3rd sibling and more
+			hash[key][hash[key].length] = val;
+		}
+	} else if ( this.usearray[key] ) {
+		if ( cnts == 1 ) hash[key] = [];
+		hash[key][hash[key].length] = val;      // push
+	} else {
+		if ( cnts == 1 ) hash[key] = val;       // only 1st sibling
+	}
+};
+
+// ================================================================
+//  class: JKL.ParseXML.Text 
+
+JKL.ParseXML.Text = function ( url, query, method ) {
+	// debug.print( "new JKL.ParseXML.Text( '"+url+"', '"+query+"', '"+method+"' );" );
+	this.http = new JKL.ParseXML.HTTP( url, query, method, true );
+	return this;
+};
+
+JKL.ParseXML.Text.prototype.parse = JKL.ParseXML.prototype.parse;
+JKL.ParseXML.Text.prototype.async = JKL.ParseXML.prototype.async;
+JKL.ParseXML.Text.prototype.onerror = JKL.ParseXML.prototype.onerror;
+
+JKL.ParseXML.Text.prototype.parseResponse = function () {
+	var data = this.http.responseText();
+	return data;
+}
+
+// ================================================================
+//  class: JKL.ParseXML.JSON
+
+JKL.ParseXML.JSON = function ( url, query, method ) {
+	// debug.print( "new JKL.ParseXML.JSON( '"+url+"', '"+query+"', '"+method+"' );" );
+	this.http = new JKL.ParseXML.HTTP( url, query, method, true );
+	return this;
+};
+
+JKL.ParseXML.JSON.prototype.parse = JKL.ParseXML.prototype.parse;
+JKL.ParseXML.JSON.prototype.async = JKL.ParseXML.prototype.async;
+JKL.ParseXML.JSON.prototype.onerror = JKL.ParseXML.prototype.onerror;
+
+JKL.ParseXML.JSON.prototype.parseResponse = function () {
+	var text = this.http.responseText();
+	// http://www.antimon2.atnifty.com/2007/01/jklparsexmljson.html
+	if ( typeof(text) == 'undefined' ) return;
+	if ( ! text.length ) return;
+	var data = eval( "("+text+")" );
+	return data;
+}
+
+// ================================================================
+//  class: JKL.ParseXML.DOM
+
+JKL.ParseXML.DOM = function ( url, query, method ) {
+	// debug.print( "new JKL.ParseXML.DOM( '"+url+"', '"+query+"', '"+method+"' );" );
+	this.http = new JKL.ParseXML.HTTP( url, query, method, false );
+	return this;
+};
+
+JKL.ParseXML.DOM.prototype.parse = JKL.ParseXML.prototype.parse;
+JKL.ParseXML.DOM.prototype.async = JKL.ParseXML.prototype.async;
+JKL.ParseXML.DOM.prototype.onerror = JKL.ParseXML.prototype.onerror;
+
+JKL.ParseXML.DOM.prototype.parseResponse = function () {
+	var data = this.http.documentElement();
+	return data;
+}
+
+// ================================================================
+//  class: JKL.ParseXML.CSV
+
+JKL.ParseXML.CSV = function ( url, query, method ) {
+	// debug.print( "new JKL.ParseXML.CSV( '"+url+"', '"+query+"', '"+method+"' );" );
+	this.http = new JKL.ParseXML.HTTP( url, query, method, true );
+	return this;
+};
+
+JKL.ParseXML.CSV.prototype.parse = JKL.ParseXML.prototype.parse;
+JKL.ParseXML.CSV.prototype.async = JKL.ParseXML.prototype.async;
+JKL.ParseXML.CSV.prototype.onerror = JKL.ParseXML.prototype.onerror;
+
+JKL.ParseXML.CSV.prototype.parseResponse = function () {
+	var text = this.http.responseText();
+	var data = this.parseCSV( text );
+	return data;
+}
+
+JKL.ParseXML.CSV.prototype.parseCSV = function ( text ) {
+	text = text.replace( /\r\n?/g, "\n" );              // new line character
+	var pos = 0;
+	var len = text.length;
+	var table = [];
+	while( pos<len ) {
+		var line = [];
+		while( pos<len ) {
+			if ( text.charAt(pos) == '"' ) {            // "..." quoted column
+				var nextquote = text.indexOf( '"', pos+1 );
+				while ( nextquote<len && nextquote > -1 ) {
+					if ( text.charAt(nextquote+1) != '"' ) {
+						break;                          // end of column
+					}
+					nextquote = text.indexOf( '"', nextquote+2 );
+				}
+				if ( nextquote < 0 ) {
+					// unclosed quote
+				} else if ( text.charAt(nextquote+1) == "," ) { // end of column
+					var quoted = text.substr( pos+1, nextquote-pos-1 );
+					quoted = quoted.replace(/""/g,'"');
+					line[line.length] = quoted;
+					pos = nextquote+2;
+					continue;
+				} else if ( text.charAt(nextquote+1) == "\n" || // end of line
+						len==nextquote+1 ) {                // end of file
+					var quoted = text.substr( pos+1, nextquote-pos-1 );
+					quoted = quoted.replace(/""/g,'"');
+					line[line.length] = quoted;
+					pos = nextquote+2;
+					break;
+				} else {
+					// invalid column
+				}
+			}
+			var nextcomma = text.indexOf( ",", pos );
+			var nextnline = text.indexOf( "\n", pos );
+			if ( nextnline < 0 ) nextnline = len;
+			if ( nextcomma > -1 && nextcomma < nextnline ) {
+				line[line.length] = text.substr( pos, nextcomma-pos );
+				pos = nextcomma+1;
+			} else {                                    // end of line
+				line[line.length] = text.substr( pos, nextnline-pos );
+				pos = nextnline+1;
+				break;
+			}
+		}
+		if ( line.length >= 0 ) {
+			table[table.length] = line;                 // push line
+		}
+	}
+	if ( table.length < 0 ) return;                     // null data
+	return table;
+};
+
+// ================================================================
+//  class: JKL.ParseXML.CSVmap
+
+JKL.ParseXML.CSVmap = function ( url, query, method ) {
+	// debug.print( "new JKL.ParseXML.CSVmap( '"+url+"', '"+query+"', '"+method+"' );" );
+	this.http = new JKL.ParseXML.HTTP( url, query, method, true );
+	return this;
+};
+
+JKL.ParseXML.CSVmap.prototype.parse = JKL.ParseXML.prototype.parse;
+JKL.ParseXML.CSVmap.prototype.async = JKL.ParseXML.prototype.async;
+JKL.ParseXML.CSVmap.prototype.onerror = JKL.ParseXML.prototype.onerror;
+JKL.ParseXML.CSVmap.prototype.parseCSV = JKL.ParseXML.CSV.prototype.parseCSV;
+
+JKL.ParseXML.CSVmap.prototype.parseResponse = function () {
+	var text = this.http.responseText();
+	var source = this.parseCSV( text );
+	if ( ! source ) return;
+	if ( source.length < 0 ) return;
+
+	var title = source.shift();                 // first line as title
+	var data = [];
+	for( var i=0; i<source.length; i++ ) {
+		var hash = {};
+		for( var j=0; j<title.length && j<source[i].length; j++ ) {
+			hash[title[j]] = source[i][j];      // array to map
+		}
+		data[data.length] = hash;               // push line
+	}
+	return data;
+}
+
+// ================================================================
+//  class: JKL.ParseXML.LoadVars
+
+JKL.ParseXML.LoadVars = function ( url, query, method ) {
+	// debug.print( "new JKL.ParseXML.LoadVars( '"+url+"', '"+query+"', '"+method+"' );" );
+	this.http = new JKL.ParseXML.HTTP( url, query, method, true );
+	return this;
+};
+
+JKL.ParseXML.LoadVars.prototype.parse = JKL.ParseXML.prototype.parse;
+JKL.ParseXML.LoadVars.prototype.async = JKL.ParseXML.prototype.async;
+JKL.ParseXML.LoadVars.prototype.onerror = JKL.ParseXML.prototype.onerror;
+
+JKL.ParseXML.LoadVars.prototype.parseResponse = function () {
+	var text = this.http.responseText();
+	text = text.replace( /\r\n?/g, "\n" );              // new line character
+	var hash = {};
+	var list = text.split( "&" );
+	for( var i=0; i<list.length; i++ ) {
+		var eq = list[i].indexOf( "=" );
+		if ( eq > -1 ) {
+			var key = decodeURIComponent(list[i].substr(0,eq).replace("+","%20"));
+			var val = decodeURIComponent(list[i].substr(eq+1).replace("+","%20"));
+			hash[key] = val;
+		} else {
+			hash[list[i]] = "";
+		}
+	}
+	return hash;
+};
+
+// ================================================================
+//  class: JKL.ParseXML.HTTP
+//  constructer: new JKL.ParseXML.HTTP()
+
+JKL.ParseXML.HTTP = function( url, query, method, textmode ) {
+	// debug.print( "new JKL.ParseXML.HTTP( '"+url+"', '"+query+"', '"+method+"', '"+textmode+"' );" );
+	this.url = url;
+	if ( typeof(query) == "string" ) {
+		this.query = query;
+	} else {
+		this.query = "";
+	}
+	if ( method ) {
+		this.method = method;
+	} else if ( typeof(query) == "string" ) {
+		this.method = "POST";
+	} else {
+		this.method = "GET";
+	}
+	this.textmode = textmode ? true : false;
+	this.req = null;
+	this.xmldom_flag = false;
+	this.onerror_func  = null;
+	this.callback_func = null;
+	this.already_done = null;
+	return this;
+};
+
+// ================================================================
+//  class variables
+
+JKL.ParseXML.HTTP.REQUEST_TYPE  = "application/x-www-form-urlencoded";
+JKL.ParseXML.HTTP.ACTIVEX_XMLDOM  = "Microsoft.XMLDOM";  // Msxml2.DOMDocument.5.0
+JKL.ParseXML.HTTP.ACTIVEX_XMLHTTP = "Microsoft.XMLHTTP"; // Msxml2.XMLHTTP.3.0
+JKL.ParseXML.HTTP.EPOCH_TIMESTAMP = "Thu, 01 Jun 1970 00:00:00 GMT"
+
+// ================================================================
+
+JKL.ParseXML.HTTP.prototype.onerror = JKL.ParseXML.prototype.onerror;
+JKL.ParseXML.HTTP.prototype.async = function( func ) {
+	this.async_func = func;
+}
+
+// ================================================================
+//  [IE+IXMLDOMElement]
+//      XML     text/xml            OK
+//      XML     application/rdf+xml OK
+//      TEXT    text/plain          NG
+//      TEXT    others              NG
+//  [IE+IXMLHttpRequest]
+//      XML     text/xml            OK
+//      XML     application/rdf+xml NG
+//      TEXT    text/plain          OK
+//      TEXT    others              OK
+//  [Firefox+XMLHttpRequest]
+//      XML     text/xml            OK
+//      XML     application/rdf+xml OK (overrideMimeType)
+//      TEXT    text/plain          OK
+//      TEXT    others              OK (overrideMimeType)
+//  [Opera+XMLHttpRequest]
+//      XML     text/xml            OK
+//      XML     application/rdf+xml OK
+//      TEXT    text/plain          OK
+//      TEXT    others              OK
+// ================================================================
+
+JKL.ParseXML.HTTP.prototype.load = function() {
+	// create XMLHttpRequest object
+	if ( window.ActiveXObject ) {                           // IE5.5,6,7
+		var activex = JKL.ParseXML.HTTP.ACTIVEX_XMLHTTP;    // IXMLHttpRequest
+		if ( this.method == "GET" && ! this.textmode ) {
+			// use IXMLDOMElement to accept any mime types
+			// because overrideMimeType() is not available on IE6
+			activex = JKL.ParseXML.HTTP.ACTIVEX_XMLDOM;     // IXMLDOMElement
+		}
+		// debug.print( "new ActiveXObject( '"+activex+"' )" );
+		this.req = new ActiveXObject( activex );
+	} else if ( window.XMLHttpRequest ) {                   // Firefox, Opera, iCab
+		// debug.print( "new XMLHttpRequest()" );
+		this.req = new XMLHttpRequest();
+	}
+
+	// async mode when call back function is specified
+	var async_flag = this.async_func ? true : false;
+	// debug.print( "async: "+ async_flag );
+
+	// open for XMLHTTPRequest (not for IXMLDOMElement)
+	if ( typeof(this.req.send) != "undefined" ) {
+		// debug.print( "open( '"+this.method+"', '"+this.url+"', "+async_flag+" );" );
+		this.req.open( this.method, this.url, async_flag );
+	}
+
+	//  // If-Modified-Since: Thu, 01 Jun 1970 00:00:00 GMT
+	//  if ( typeof(this.req.setRequestHeader) != "undefined" ) {
+	//      // debug.print( "If-Modified-Since"+JKL.ParseXML.HTTP.EPOCH_TIMESTAMP );
+	//      this.req.setRequestHeader( "If-Modified-Since", JKL.ParseXML.HTTP.EPOCH_TIMESTAMP );
+	//  }
+
+	// Content-Type: application/x-www-form-urlencoded (request header)
+	// Some server does not accept without request content-type.
+	if ( typeof(this.req.setRequestHeader) != "undefined" ) {
+		// debug.print( "Content-Type: "+JKL.ParseXML.HTTP.REQUEST_TYPE+" (request)" );
+		this.req.setRequestHeader( "Content-Type", JKL.ParseXML.HTTP.REQUEST_TYPE );
+	}
+
+	// Content-Type: text/xml (response header)
+	// FireFox does not accept other mime types like application/rdf+xml etc.
+	if ( typeof(this.req.overrideMimeType) != "undefined" && ! this.textmode ) {
+		// debug.print( "Content-Type: "+JKL.ParseXML.MIME_TYPE_XML+" (response)" );
+		this.req.overrideMimeType( JKL.ParseXML.MIME_TYPE_XML );
+	}
+
+	// set call back handler when async mode
+	if ( async_flag ) {
+		var copy = this;
+		copy.already_done = false;                  // not parsed yet
+		var check_func = function () {
+			if ( copy.req.readyState != 4 ) return;
+			// debug.print( "readyState(async): "+copy.req.readyState );
+			var succeed = copy.checkResponse();
+			// debug.print( "checkResponse(async): "+succeed );
+			if ( ! succeed ) return;                // failed
+			if ( copy.already_done ) return;        // parse only once
+			copy.already_done = true;               // already parsed
+			copy.async_func();                      // call back async
+		};
+		this.req.onreadystatechange = check_func;
+		// for document.implementation.createDocument
+		// this.req.onload = check_func;
+	}
+
+	// send the request and query string
+	if ( typeof(this.req.send) != "undefined" ) {
+		// debug.print( "XMLHTTPRequest: send( '"+this.query+"' );" );
+		this.req.send( this.query );                        // XMLHTTPRequest
+	} else if ( typeof(this.req.load) != "undefined" ) {
+		// debug.print( "IXMLDOMElement: load( '"+this.url+"' );" );
+		this.req.async = async_flag;
+		this.req.load( this.url );                          // IXMLDOMElement
+	}
+
+	// just return when async mode
+	if ( async_flag ) return;
+
+	var succeed = this.checkResponse();
+	// debug.print( "checkResponse(sync): "+succeed );
+}
+
+// ================================================================
+//  method: checkResponse()
+
+JKL.ParseXML.HTTP.prototype.checkResponse = function() {
+	// parseError on IXMLDOMElement
+	if ( this.req.parseError && this.req.parseError.errorCode != 0 ) {
+		// debug.print( "parseError: "+this.req.parseError.reason );
+		if ( this.onerror_func ) this.onerror_func( this.req.parseError.reason );
+		return false;                       // failed
+	}
+
+	// HTTP response code
+	if ( this.req.status-0 > 0 &&
+			this.req.status != 200 &&          // OK
+			this.req.status != 206 &&          // Partial Content
+			this.req.status != 304 ) {         // Not Modified
+		// debug.print( "status: "+this.req.status );
+		if ( this.onerror_func ) this.onerror_func( this.req.status );
+		return false;                       // failed
+	}
+
+	return true;                            // succeed
+}
+
+// ================================================================
+//  method: documentElement()
+//  return: XML DOM in response body
+
+JKL.ParseXML.HTTP.prototype.documentElement = function() {
+	// debug.print( "documentElement: "+this.req );
+	if ( ! this.req ) return;
+	if ( this.req.responseXML ) {
+		return this.req.responseXML.documentElement;    // XMLHTTPRequest
+	} else {
+		return this.req.documentElement;                // IXMLDOMDocument
+	}
+}
+
+// ================================================================
+//  method: responseText()
+//  return: text string in response body
+
+JKL.ParseXML.HTTP.prototype.responseText = function() {
+	// debug.print( "responseText: "+this.req );
+	if ( ! this.req ) return;
+
+	//  Safari and Konqueror cannot understand the encoding of text files.
+	if ( navigator.appVersion.match( "KHTML" ) ) {
+		var esc = escape( this.req.responseText );
+		//        debug.print( "escape: "+esc );
+		if ( ! esc.match("%u") && esc.match("%") ) {
+			return decodeURIComponent(esc);
+		}
+	}
+
+	return this.req.responseText;
+}
+
+// ================================================================
+//  http://msdn.microsoft.com/library/en-us/xmlsdk/html/d051f7c5-e882-42e8-a5b6-d1ce67af275c.asp
+// ================================================================