diff --git a/htmlparser.js b/htmlparser.js index da92232..c6c6d23 100644 --- a/htmlparser.js +++ b/htmlparser.js @@ -1,316 +1,368 @@ -/* - * 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 - * - * // 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 +/* + * 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("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("a,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"); - + 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; + 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 + chars = true; + + // Make sure we're not in a script or style element + if (!stack.last() || !special[stack.last()]) { + + // Comment if (html.indexOf(""); - + index = html.indexOf("-->"); + if (index >= 0) { - if (handler.comment) - handler.comment(html.substring(4, index)); - html = html.substring(index + 3); + if (handler.comment) + handler.comment(html.substring(4, index)); + html = html.substring(index + 3); chars = false; - } - - // end tag + } + + // end tag } else if (html.indexOf("]*>"), function (all, text) { - text = text.replace(/|/g, "$1$2"); - if (handler.chars) - handler.chars(text); - + html = html.replace(new RegExp("([\\s\\S]*?)<\/" + stack.last() + "[^>]*>"), function (all, text) { + text = text.replace(/|/g, "$1$2"); + if (handler.chars) + handler.chars(text); + return ""; - }); - + }); + parseEndTag("", stack.last()); - } - - if (html == last) - throw "Parse Error: " + html; + } + + if (html == last) + throw "Parse Error: " + html; last = html; - } - - // Clean up any remaining tags - parseEndTag(); - + } + + // Clean up any remaining tags + parseEndTag(); + function parseStartTag(tag, tagName, rest, unary) { - tagName = tagName.toLowerCase(); - + 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); - + } + + unary = empty[tagName] || !!unary; + + if (!unary) + stack.push(tagName); + if (handler.start) { - var attrs = []; - + 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 : ""; - + 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\\\"') //" + name: name, + value: value, + escaped: value.replace(/(^|[^\\])"/g, '$1\\\"') //" }); - }); - - if (handler.start) + }); + + 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 + } + + function parseEndTag(tag, tagName) { + if(tagName!== undefined) tagName = tagName.toLowerCase(); + // 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 = ""; - + 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 += "<" + tag; + + for (var i = 0; i < attrs.length; i++) + results += " " + attrs[i].name + '="' + attrs[i].escaped + '"'; results += ">"; - }, + }, end: function (tag) { results += ""; - }, + }, chars: function (text) { results += text; - }, + }, comment: function (text) { results += ""; } - }); - + }); + 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 + }; + + 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", + 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") + 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 + + } 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")); + 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; - + })(); + + // 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 + start: function (tagName, attrs, unary) { + // If it's a pre-built element, then we can ignore + // its construction if (one[tagName]) { - curParentNode = 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); - + } + + 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); + elems.push(elem); curParentNode = elem; } - }, + }, end: function (tag) { - elems.length -= 1; - - // Init the new parentNode + 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 + }, + 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; + var obj = {}, items = str.split(","); + for (var i = 0; i < items.length; i++) + obj[items[i]] = true; return obj; } -})(); +})();