/*
* HTML5 Parser By Sam Blowes
*
* Designed for HTML5 documents
*
* Original code by John Resig (ejohn.org)
* http://ejohn.org/blog/pure-javascript-html-parser/
* Original code by Erik Arvidsson, Mozilla Public License
* http://erik.eae.net/simplehtmlparser/simplehtmlparser.js
*
* ----------------------------------------------------------------------------
* License
* ----------------------------------------------------------------------------
*
* This code is triple licensed using Apache Software License 2.0,
* Mozilla Public License or GNU Public License
*
* ////////////////////////////////////////////////////////////////////////////
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy
* of the License at http://www.apache.org/licenses/LICENSE-2.0
*
* ////////////////////////////////////////////////////////////////////////////
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Simple HTML Parser.
*
* The Initial Developer of the Original Code is Erik Arvidsson.
* Portions created by Erik Arvidssson are Copyright (C) 2004. All Rights
* Reserved.
*
* ////////////////////////////////////////////////////////////////////////////
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* ----------------------------------------------------------------------------
* Usage
* ----------------------------------------------------------------------------
*
* // Use like so:
* HTMLParser(htmlString, {
* start: function(tag, attrs, unary) {},
* end: function(tag) {},
* chars: function(text) {},
* comment: function(text) {}
* });
*
* // or to get an XML string:
* HTMLtoXML(htmlString);
*
* // or to get an XML DOM Document
* HTMLtoDOM(htmlString);
*
* // or to inject into an existing document/DOM node
* HTMLtoDOM(htmlString, document);
* HTMLtoDOM(htmlString, document.body);
*
*/
(function () {
// Regular Expressions for parsing tags and attributes
var startTag = /^<([-A-Za-z0-9_]+)((?:\s+[a-zA-Z_:][-a-zA-Z0-9_:.]*(?:\s*=\s*(?:(?:"[^"]*")|(?:'[^']*')|[^>\s]+))?)*)\s*(\/?)>/,
endTag = /^<\/([-A-Za-z0-9_]+)[^>]*>/,
attr = /([a-zA-Z_:][-a-zA-Z0-9_:.]*)(?:\s*=\s*(?:(?:"((?:\\.|[^"])*)")|(?:'((?:\\.|[^'])*)')|([^>\s]+)))?/g;
// Empty Elements - HTML 5
var empty = makeMap("area,base,basefont,br,col,frame,hr,img,input,link,meta,param,embed,command,keygen,source,track,wbr");
// Block Elements - HTML 5
var block = makeMap("a,address,article,applet,aside,audio,blockquote,button,canvas,center,dd,del,dir,div,dl,dt,fieldset,figcaption,figure,footer,form,frameset,h1,h2,h3,h4,h5,h6,header,hgroup,hr,iframe,ins,isindex,li,map,menu,noframes,noscript,object,ol,output,p,pre,section,script,table,tbody,td,tfoot,th,thead,tr,ul,video");
// Inline Elements - HTML 5
var inline = makeMap("abbr,acronym,applet,b,basefont,bdo,big,br,button,cite,code,del,dfn,em,font,i,iframe,img,input,ins,kbd,label,map,object,q,s,samp,script,select,small,span,strike,strong,sub,sup,textarea,tt,u,var");
// Elements that you can, intentionally, leave open
// (and which close themselves)
var closeSelf = makeMap("colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr");
// Attributes that have their values filled in disabled="disabled"
var fillAttrs = makeMap("checked,compact,declare,defer,disabled,ismap,multiple,nohref,noresize,noshade,nowrap,readonly,selected");
// Special Elements (can contain anything)
var special = makeMap("script,style");
var HTMLParser = this.HTMLParser = function (html, handler) {
var index, chars, match, stack = [], last = html;
stack.last = function () {
return this[this.length - 1];
};
while (html) {
chars = true;
// Make sure we're not in a script or style element
if (!stack.last() || !special[stack.last()]) {
// Comment
if (html.indexOf("<!--") == 0) {
index = html.indexOf("-->");
if (index >= 0) {
if (handler.comment)
handler.comment(html.substring(4, index));
html = html.substring(index + 3);
chars = false;
}
// end tag
} else if (html.indexOf("</") == 0) {
match = html.match(endTag);
if (match) {
html = html.substring(match[0].length);
match[0].replace(endTag, parseEndTag);
chars = false;
}
// start tag
} else if (html.indexOf("<") == 0) {
match = html.match(startTag);
if (match) {
html = html.substring(match[0].length);
match[0].replace(startTag, parseStartTag);
chars = false;
}
}
if (chars) {
index = html.indexOf("<");
var text = index < 0 ? html : html.substring(0, index);
html = index < 0 ? "" : html.substring(index);
if (handler.chars)
handler.chars(text);
}
} else {
html = html.replace(new RegExp("([\\s\\S]*?)<\/" + stack.last() + "[^>]*>"), function (all, text) {
text = text.replace(/<!--([\s\S]*?)-->|<!\[CDATA\[([\s\S]*?)]]>/g, "$1$2");
if (handler.chars)
handler.chars(text);
return "";
});
parseEndTag("", stack.last());
}
if (html == last)
throw "Parse Error: " + html;
last = html;
}
// Clean up any remaining tags
parseEndTag();
function parseStartTag(tag, tagName, rest, unary) {
tagName = tagName.toLowerCase();
if (block[tagName]) {
while (stack.last() && inline[stack.last()]) {
parseEndTag("", stack.last());
}
}
if (closeSelf[tagName] && stack.last() == tagName) {
parseEndTag("", tagName);
}
unary = empty[tagName] || !!unary;
if (!unary)
stack.push(tagName);
if (handler.start) {
var attrs = [];
rest.replace(attr, function (match, name) {
var value = arguments[2] ? arguments[2] :
arguments[3] ? arguments[3] :
arguments[4] ? arguments[4] :
fillAttrs[name] ? name : "";
attrs.push({
name: name,
value: value,
escaped: value.replace(/(^|[^\\])"/g, '$1\\\"') //"
});
});
if (handler.start)
handler.start(tagName, attrs, unary);
}
}
function parseEndTag(tag, tagName) {
// If no tag name is provided, clean shop
if (!tagName)
var pos = 0;
// Find the closest opened tag of the same type
else
for (var pos = stack.length - 1; pos >= 0; pos--)
if (stack[pos] == tagName)
break;
if (pos >= 0) {
// Close all the open elements, up the stack
for (var i = stack.length - 1; i >= pos; i--)
if (handler.end)
handler.end(stack[i]);
// Remove the open elements from the stack
stack.length = pos;
}
}
};
this.HTMLtoXML = function (html) {
var results = "";
HTMLParser(html, {
start: function (tag, attrs, unary) {
results += "<" + tag;
for (var i = 0; i < attrs.length; i++)
results += " " + attrs[i].name + '="' + attrs[i].escaped + '"';
results += ">";
},
end: function (tag) {
results += "</" + tag + ">";
},
chars: function (text) {
results += text;
},
comment: function (text) {
results += "<!--" + text + "-->";
}
});
return results;
};
this.HTMLtoDOM = function (html, doc) {
// There can be only one of these elements
var one = makeMap("html,head,body,title");
// Enforce a structure for the document
var structure = {
link: "head",
base: "head"
};
if (!doc) {
if (typeof DOMDocument != "undefined")
doc = new DOMDocument();
else if (typeof document != "undefined" && document.implementation && document.implementation.createDocument)
doc = document.implementation.createDocument("", "", null);
else if (typeof ActiveX != "undefined")
doc = new ActiveXObject("Msxml.DOMDocument");
} else
doc = doc.ownerDocument ||
doc.getOwnerDocument && doc.getOwnerDocument() ||
doc;
var elems = [],
documentElement = doc.documentElement ||
doc.getDocumentElement && doc.getDocumentElement();
// If we're dealing with an empty document then we
// need to pre-populate it with the HTML document structure
if (!documentElement && doc.createElement) (function () {
var html = doc.createElement("html");
var head = doc.createElement("head");
head.appendChild(doc.createElement("title"));
html.appendChild(head);
html.appendChild(doc.createElement("body"));
doc.appendChild(html);
})();
// Find all the unique elements
if (doc.getElementsByTagName)
for (var i in one)
one[i] = doc.getElementsByTagName(i)[0];
// If we're working with a document, inject contents into
// the body element
var curParentNode = one.body;
HTMLParser(html, {
start: function (tagName, attrs, unary) {
// If it's a pre-built element, then we can ignore
// its construction
if (one[tagName]) {
curParentNode = one[tagName];
if (!unary) {
elems.push(curParentNode);
}
return;
}
var elem = doc.createElement(tagName);
for (var attr in attrs)
elem.setAttribute(attrs[attr].name, attrs[attr].value);
if (structure[tagName] && typeof one[structure[tagName]] != "boolean")
one[structure[tagName]].appendChild(elem);
else if (curParentNode && curParentNode.appendChild)
curParentNode.appendChild(elem);
if (!unary) {
elems.push(elem);
curParentNode = elem;
}
},
end: function (tag) {
elems.length -= 1;
// Init the new parentNode
curParentNode = elems[elems.length - 1];
},
chars: function (text) {
curParentNode.appendChild(doc.createTextNode(text));
},
comment: function (text) {
// create comment node
}
});
return doc;
};
function makeMap(str) {
var obj = {}, items = str.split(",");
for (var i = 0; i < items.length; i++)
obj[items[i]] = true;
return obj;
}
})();