/*!
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* HTML Parser By John Resig (ejohn.org)
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* Modified by Juriy "kangax" Zaytsev
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* Original code by Erik Arvidsson, Mozilla Public License
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* http://erik.eae.net/simplehtmlparser/simplehtmlparser.js
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*/
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/*
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* // Use like so:
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* HTMLParser(htmlString, {
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* start: function(tag, attrs, unary) {},
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* end: function(tag) {},
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* chars: function(text) {},
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* comment: function(text) {}
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* });
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*
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* // or to get an XML string:
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* HTMLtoXML(htmlString);
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*
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* // or to get an XML DOM Document
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* HTMLtoDOM(htmlString);
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*
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* // or to inject into an existing document/DOM node
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* HTMLtoDOM(htmlString, document);
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* HTMLtoDOM(htmlString, document.body);
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*
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*/
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/* global ActiveXObject, DOMDocument */
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'use strict';
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var createMapFromString = require('./utils').createMapFromString;
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function makeMap(values) {
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return createMapFromString(values, true);
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}
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// Regular Expressions for parsing tags and attributes
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var singleAttrIdentifier = /([^\s"'<>/=]+)/,
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singleAttrAssigns = [/=/],
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singleAttrValues = [
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// attr value double quotes
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/"([^"]*)"+/.source,
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// attr value, single quotes
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/'([^']*)'+/.source,
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// attr value, no quotes
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/([^ \t\n\f\r"'`=<>]+)/.source
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],
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// https://www.w3.org/TR/1999/REC-xml-names-19990114/#NT-QName
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qnameCapture = (function() {
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// based on https://www.npmjs.com/package/ncname
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var combiningChar = '\\u0300-\\u0345\\u0360\\u0361\\u0483-\\u0486\\u0591-\\u05A1\\u05A3-\\u05B9\\u05BB-\\u05BD\\u05BF\\u05C1\\u05C2\\u05C4\\u064B-\\u0652\\u0670\\u06D6-\\u06E4\\u06E7\\u06E8\\u06EA-\\u06ED\\u0901-\\u0903\\u093C\\u093E-\\u094D\\u0951-\\u0954\\u0962\\u0963\\u0981-\\u0983\\u09BC\\u09BE-\\u09C4\\u09C7\\u09C8\\u09CB-\\u09CD\\u09D7\\u09E2\\u09E3\\u0A02\\u0A3C\\u0A3E-\\u0A42\\u0A47\\u0A48\\u0A4B-\\u0A4D\\u0A70\\u0A71\\u0A81-\\u0A83\\u0ABC\\u0ABE-\\u0AC5\\u0AC7-\\u0AC9\\u0ACB-\\u0ACD\\u0B01-\\u0B03\\u0B3C\\u0B3E-\\u0B43\\u0B47\\u0B48\\u0B4B-\\u0B4D\\u0B56\\u0B57\\u0B82\\u0B83\\u0BBE-\\u0BC2\\u0BC6-\\u0BC8\\u0BCA-\\u0BCD\\u0BD7\\u0C01-\\u0C03\\u0C3E-\\u0C44\\u0C46-\\u0C48\\u0C4A-\\u0C4D\\u0C55\\u0C56\\u0C82\\u0C83\\u0CBE-\\u0CC4\\u0CC6-\\u0CC8\\u0CCA-\\u0CCD\\u0CD5\\u0CD6\\u0D02\\u0D03\\u0D3E-\\u0D43\\u0D46-\\u0D48\\u0D4A-\\u0D4D\\u0D57\\u0E31\\u0E34-\\u0E3A\\u0E47-\\u0E4E\\u0EB1\\u0EB4-\\u0EB9\\u0EBB\\u0EBC\\u0EC8-\\u0ECD\\u0F18\\u0F19\\u0F35\\u0F37\\u0F39\\u0F3E\\u0F3F\\u0F71-\\u0F84\\u0F86-\\u0F8B\\u0F90-\\u0F95\\u0F97\\u0F99-\\u0FAD\\u0FB1-\\u0FB7\\u0FB9\\u20D0-\\u20DC\\u20E1\\u302A-\\u302F\\u3099\\u309A';
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var digit = '0-9\\u0660-\\u0669\\u06F0-\\u06F9\\u0966-\\u096F\\u09E6-\\u09EF\\u0A66-\\u0A6F\\u0AE6-\\u0AEF\\u0B66-\\u0B6F\\u0BE7-\\u0BEF\\u0C66-\\u0C6F\\u0CE6-\\u0CEF\\u0D66-\\u0D6F\\u0E50-\\u0E59\\u0ED0-\\u0ED9\\u0F20-\\u0F29';
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var extender = '\\xB7\\u02D0\\u02D1\\u0387\\u0640\\u0E46\\u0EC6\\u3005\\u3031-\\u3035\\u309D\\u309E\\u30FC-\\u30FE';
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var letter = 'A-Za-z\\xC0-\\xD6\\xD8-\\xF6\\xF8-\\u0131\\u0134-\\u013E\\u0141-\\u0148\\u014A-\\u017E\\u0180-\\u01C3\\u01CD-\\u01F0\\u01F4\\u01F5\\u01FA-\\u0217\\u0250-\\u02A8\\u02BB-\\u02C1\\u0386\\u0388-\\u038A\\u038C\\u038E-\\u03A1\\u03A3-\\u03CE\\u03D0-\\u03D6\\u03DA\\u03DC\\u03DE\\u03E0\\u03E2-\\u03F3\\u0401-\\u040C\\u040E-\\u044F\\u0451-\\u045C\\u045E-\\u0481\\u0490-\\u04C4\\u04C7\\u04C8\\u04CB\\u04CC\\u04D0-\\u04EB\\u04EE-\\u04F5\\u04F8\\u04F9\\u0531-\\u0556\\u0559\\u0561-\\u0586\\u05D0-\\u05EA\\u05F0-\\u05F2\\u0621-\\u063A\\u0641-\\u064A\\u0671-\\u06B7\\u06BA-\\u06BE\\u06C0-\\u06CE\\u06D0-\\u06D3\\u06D5\\u06E5\\u06E6\\u0905-\\u0939\\u093D\\u0958-\\u0961\\u0985-\\u098C\\u098F\\u0990\\u0993-\\u09A8\\u09AA-\\u09B0\\u09B2\\u09B6-\\u09B9\\u09DC\\u09DD\\u09DF-\\u09E1\\u09F0\\u09F1\\u0A05-\\u0A0A\\u0A0F\\u0A10\\u0A13-\\u0A28\\u0A2A-\\u0A30\\u0A32\\u0A33\\u0A35\\u0A36\\u0A38\\u0A39\\u0A59-\\u0A5C\\u0A5E\\u0A72-\\u0A74\\u0A85-\\u0A8B\\u0A8D\\u0A8F-\\u0A91\\u0A93-\\u0AA8\\u0AAA-\\u0AB0\\u0AB2\\u0AB3\\u0AB5-\\u0AB9\\u0ABD\\u0AE0\\u0B05-\\u0B0C\\u0B0F\\u0B10\\u0B13-\\u0B28\\u0B2A-\\u0B30\\u0B32\\u0B33\\u0B36-\\u0B39\\u0B3D\\u0B5C\\u0B5D\\u0B5F-\\u0B61\\u0B85-\\u0B8A\\u0B8E-\\u0B90\\u0B92-\\u0B95\\u0B99\\u0B9A\\u0B9C\\u0B9E\\u0B9F\\u0BA3\\u0BA4\\u0BA8-\\u0BAA\\u0BAE-\\u0BB5\\u0BB7-\\u0BB9\\u0C05-\\u0C0C\\u0C0E-\\u0C10\\u0C12-\\u0C28\\u0C2A-\\u0C33\\u0C35-\\u0C39\\u0C60\\u0C61\\u0C85-\\u0C8C\\u0C8E-\\u0C90\\u0C92-\\u0CA8\\u0CAA-\\u0CB3\\u0CB5-\\u0CB9\\u0CDE\\u0CE0\\u0CE1\\u0D05-\\u0D0C\\u0D0E-\\u0D10\\u0D12-\\u0D28\\u0D2A-\\u0D39\\u0D60\\u0D61\\u0E01-\\u0E2E\\u0E30\\u0E32\\u0E33\\u0E40-\\u0E45\\u0E81\\u0E82\\u0E84\\u0E87\\u0E88\\u0E8A\\u0E8D\\u0E94-\\u0E97\\u0E99-\\u0E9F\\u0EA1-\\u0EA3\\u0EA5\\u0EA7\\u0EAA\\u0EAB\\u0EAD\\u0EAE\\u0EB0\\u0EB2\\u0EB3\\u0EBD\\u0EC0-\\u0EC4\\u0F40-\\u0F47\\u0F49-\\u0F69\\u10A0-\\u10C5\\u10D0-\\u10F6\\u1100\\u1102\\u1103\\u1105-\\u1107\\u1109\\u110B\\u110C\\u110E-\\u1112\\u113C\\u113E\\u1140\\u114C\\u114E\\u1150\\u1154\\u1155\\u1159\\u115F-\\u1161\\u1163\\u1165\\u1167\\u1169\\u116D\\u116E\\u1172\\u1173\\u1175\\u119E\\u11A8\\u11AB\\u11AE\\u11AF\\u11B7\\u11B8\\u11BA\\u11BC-\\u11C2\\u11EB\\u11F0\\u11F9\\u1E00-\\u1E9B\\u1EA0-\\u1EF9\\u1F00-\\u1F15\\u1F18-\\u1F1D\\u1F20-\\u1F45\\u1F48-\\u1F4D\\u1F50-\\u1F57\\u1F59\\u1F5B\\u1F5D\\u1F5F-\\u1F7D\\u1F80-\\u1FB4\\u1FB6-\\u1FBC\\u1FBE\\u1FC2-\\u1FC4\\u1FC6-\\u1FCC\\u1FD0-\\u1FD3\\u1FD6-\\u1FDB\\u1FE0-\\u1FEC\\u1FF2-\\u1FF4\\u1FF6-\\u1FFC\\u2126\\u212A\\u212B\\u212E\\u2180-\\u2182\\u3007\\u3021-\\u3029\\u3041-\\u3094\\u30A1-\\u30FA\\u3105-\\u312C\\u4E00-\\u9FA5\\uAC00-\\uD7A3';
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var ncname = '[' + letter + '_][' + letter + digit + '\\.\\-_' + combiningChar + extender + ']*';
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return '((?:' + ncname + '\\:)?' + ncname + ')';
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})(),
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startTagOpen = new RegExp('^<' + qnameCapture),
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startTagClose = /^\s*(\/?)>/,
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endTag = new RegExp('^<\\/' + qnameCapture + '[^>]*>'),
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doctype = /^<!DOCTYPE\s?[^>]+>/i;
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var IS_REGEX_CAPTURING_BROKEN = false;
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'x'.replace(/x(.)?/g, function(m, g) {
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IS_REGEX_CAPTURING_BROKEN = g === '';
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});
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// Empty Elements
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var empty = makeMap('area,base,basefont,br,col,embed,frame,hr,img,input,isindex,keygen,link,meta,param,source,track,wbr');
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// Inline Elements
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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,noscript,object,q,s,samp,script,select,small,span,strike,strong,sub,sup,svg,textarea,tt,u,var');
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// Elements that you can, intentionally, leave open
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// (and which close themselves)
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var closeSelf = makeMap('colgroup,dd,dt,li,option,p,td,tfoot,th,thead,tr,source');
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// Attributes that have their values filled in disabled='disabled'
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var fillAttrs = makeMap('checked,compact,declare,defer,disabled,ismap,multiple,nohref,noresize,noshade,nowrap,readonly,selected');
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// Special Elements (can contain anything)
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var special = makeMap('script,style');
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// HTML5 tags https://html.spec.whatwg.org/multipage/indices.html#elements-3
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// Phrasing Content https://html.spec.whatwg.org/multipage/dom.html#phrasing-content
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var nonPhrasing = makeMap('address,article,aside,base,blockquote,body,caption,col,colgroup,dd,details,dialog,div,dl,dt,fieldset,figcaption,figure,footer,form,h1,h2,h3,h4,h5,h6,head,header,hgroup,hr,html,legend,li,menuitem,meta,ol,optgroup,option,param,rp,rt,source,style,summary,tbody,td,tfoot,th,thead,title,tr,track,ul');
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var reCache = {};
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function attrForHandler(handler) {
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var pattern = singleAttrIdentifier.source +
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'(?:\\s*(' + joinSingleAttrAssigns(handler) + ')' +
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'[ \\t\\n\\f\\r]*(?:' + singleAttrValues.join('|') + '))?';
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if (handler.customAttrSurround) {
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var attrClauses = [];
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for (var i = handler.customAttrSurround.length - 1; i >= 0; i--) {
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attrClauses[i] = '(?:' +
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'(' + handler.customAttrSurround[i][0].source + ')\\s*' +
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pattern +
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'\\s*(' + handler.customAttrSurround[i][1].source + ')' +
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')';
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}
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attrClauses.push('(?:' + pattern + ')');
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pattern = '(?:' + attrClauses.join('|') + ')';
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}
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return new RegExp('^\\s*' + pattern);
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}
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function joinSingleAttrAssigns(handler) {
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return singleAttrAssigns.concat(
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handler.customAttrAssign || []
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).map(function(assign) {
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return '(?:' + assign.source + ')';
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}).join('|');
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}
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function HTMLParser(html, handler) {
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var stack = [], lastTag;
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var attribute = attrForHandler(handler);
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var last, prevTag, nextTag;
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while (html) {
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last = html;
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// Make sure we're not in a script or style element
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if (!lastTag || !special(lastTag)) {
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var textEnd = html.indexOf('<');
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if (textEnd === 0) {
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// Comment:
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if (/^<!--/.test(html)) {
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var commentEnd = html.indexOf('-->');
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if (commentEnd >= 0) {
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if (handler.comment) {
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handler.comment(html.substring(4, commentEnd));
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}
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html = html.substring(commentEnd + 3);
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prevTag = '';
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continue;
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}
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}
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// https://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
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if (/^<!\[/.test(html)) {
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var conditionalEnd = html.indexOf(']>');
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if (conditionalEnd >= 0) {
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if (handler.comment) {
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handler.comment(html.substring(2, conditionalEnd + 1), true /* non-standard */);
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}
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html = html.substring(conditionalEnd + 2);
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prevTag = '';
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continue;
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}
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}
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// Doctype:
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var doctypeMatch = html.match(doctype);
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if (doctypeMatch) {
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if (handler.doctype) {
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handler.doctype(doctypeMatch[0]);
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}
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html = html.substring(doctypeMatch[0].length);
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prevTag = '';
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continue;
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}
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// End tag:
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var endTagMatch = html.match(endTag);
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if (endTagMatch) {
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html = html.substring(endTagMatch[0].length);
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endTagMatch[0].replace(endTag, parseEndTag);
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prevTag = '/' + endTagMatch[1].toLowerCase();
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continue;
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}
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// Start tag:
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var startTagMatch = parseStartTag(html);
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if (startTagMatch) {
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html = startTagMatch.rest;
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handleStartTag(startTagMatch);
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prevTag = startTagMatch.tagName.toLowerCase();
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continue;
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}
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// Treat `<` as text
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if (handler.continueOnParseError) {
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textEnd = html.indexOf('<', 1);
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}
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}
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var text;
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if (textEnd >= 0) {
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text = html.substring(0, textEnd);
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html = html.substring(textEnd);
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}
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else {
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text = html;
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html = '';
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}
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// next tag
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var nextTagMatch = parseStartTag(html);
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if (nextTagMatch) {
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nextTag = nextTagMatch.tagName;
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}
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else {
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nextTagMatch = html.match(endTag);
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if (nextTagMatch) {
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nextTag = '/' + nextTagMatch[1];
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}
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else {
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nextTag = '';
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}
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}
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if (handler.chars) {
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handler.chars(text, prevTag, nextTag);
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}
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prevTag = '';
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}
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else {
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var stackedTag = lastTag.toLowerCase();
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var reStackedTag = reCache[stackedTag] || (reCache[stackedTag] = new RegExp('([\\s\\S]*?)</' + stackedTag + '[^>]*>', 'i'));
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html = html.replace(reStackedTag, function(all, text) {
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if (stackedTag !== 'script' && stackedTag !== 'style' && stackedTag !== 'noscript') {
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text = text
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.replace(/<!--([\s\S]*?)-->/g, '$1')
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.replace(/<!\[CDATA\[([\s\S]*?)]]>/g, '$1');
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}
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if (handler.chars) {
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handler.chars(text);
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}
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return '';
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});
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parseEndTag('</' + stackedTag + '>', stackedTag);
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}
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if (html === last) {
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throw new Error('Parse Error: ' + html);
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}
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}
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if (!handler.partialMarkup) {
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// Clean up any remaining tags
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parseEndTag();
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}
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function parseStartTag(input) {
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var start = input.match(startTagOpen);
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if (start) {
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var match = {
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tagName: start[1],
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attrs: []
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};
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input = input.slice(start[0].length);
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var end, attr;
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while (!(end = input.match(startTagClose)) && (attr = input.match(attribute))) {
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input = input.slice(attr[0].length);
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match.attrs.push(attr);
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}
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if (end) {
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match.unarySlash = end[1];
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match.rest = input.slice(end[0].length);
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return match;
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}
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}
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}
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function closeIfFound(tagName) {
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if (findTag(tagName) >= 0) {
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parseEndTag('', tagName);
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return true;
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}
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}
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function handleStartTag(match) {
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var tagName = match.tagName;
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var unarySlash = match.unarySlash;
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if (handler.html5) {
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if (lastTag === 'p' && nonPhrasing(tagName)) {
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parseEndTag('', lastTag);
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}
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else if (tagName === 'tbody') {
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closeIfFound('thead');
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}
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else if (tagName === 'tfoot') {
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if (!closeIfFound('tbody')) {
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closeIfFound('thead');
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}
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}
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if (tagName === 'col' && findTag('colgroup') < 0) {
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lastTag = 'colgroup';
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stack.push({ tag: lastTag, attrs: [] });
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if (handler.start) {
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handler.start(lastTag, [], false, '');
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}
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}
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}
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if (!handler.html5 && !inline(tagName)) {
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while (lastTag && inline(lastTag)) {
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parseEndTag('', lastTag);
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}
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}
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if (closeSelf(tagName) && lastTag === tagName) {
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parseEndTag('', tagName);
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}
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var unary = empty(tagName) || tagName === 'html' && lastTag === 'head' || !!unarySlash;
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var attrs = match.attrs.map(function(args) {
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var name, value, customOpen, customClose, customAssign, quote;
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var ncp = 7; // number of captured parts, scalar
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// hackish work around FF bug https://bugzilla.mozilla.org/show_bug.cgi?id=369778
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if (IS_REGEX_CAPTURING_BROKEN && args[0].indexOf('""') === -1) {
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if (args[3] === '') { delete args[3]; }
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if (args[4] === '') { delete args[4]; }
|
if (args[5] === '') { delete args[5]; }
|
}
|
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function populate(index) {
|
customAssign = args[index];
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value = args[index + 1];
|
if (typeof value !== 'undefined') {
|
return '"';
|
}
|
value = args[index + 2];
|
if (typeof value !== 'undefined') {
|
return '\'';
|
}
|
value = args[index + 3];
|
if (typeof value === 'undefined' && fillAttrs(name)) {
|
value = name;
|
}
|
return '';
|
}
|
|
var j = 1;
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if (handler.customAttrSurround) {
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for (var i = 0, l = handler.customAttrSurround.length; i < l; i++, j += ncp) {
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name = args[j + 1];
|
if (name) {
|
quote = populate(j + 2);
|
customOpen = args[j];
|
customClose = args[j + 6];
|
break;
|
}
|
}
|
}
|
|
if (!name && (name = args[j])) {
|
quote = populate(j + 1);
|
}
|
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return {
|
name: name,
|
value: value,
|
customAssign: customAssign || '=',
|
customOpen: customOpen || '',
|
customClose: customClose || '',
|
quote: quote || ''
|
};
|
});
|
|
if (!unary) {
|
stack.push({ tag: tagName, attrs: attrs });
|
lastTag = tagName;
|
unarySlash = '';
|
}
|
|
if (handler.start) {
|
handler.start(tagName, attrs, unary, unarySlash);
|
}
|
}
|
|
function findTag(tagName) {
|
var pos;
|
var needle = tagName.toLowerCase();
|
for (pos = stack.length - 1; pos >= 0; pos--) {
|
if (stack[pos].tag.toLowerCase() === needle) {
|
break;
|
}
|
}
|
return pos;
|
}
|
|
function parseEndTag(tag, tagName) {
|
var pos;
|
|
// Find the closest opened tag of the same type
|
if (tagName) {
|
pos = findTag(tagName);
|
}
|
// If no tag name is provided, clean shop
|
else {
|
pos = 0;
|
}
|
|
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].tag, stack[i].attrs, i > pos || !tag);
|
}
|
}
|
|
// Remove the open elements from the stack
|
stack.length = pos;
|
lastTag = pos && stack[pos - 1].tag;
|
}
|
else if (tagName.toLowerCase() === 'br') {
|
if (handler.start) {
|
handler.start(tagName, [], true, '');
|
}
|
}
|
else if (tagName.toLowerCase() === 'p') {
|
if (handler.start) {
|
handler.start(tagName, [], false, '', true);
|
}
|
if (handler.end) {
|
handler.end(tagName, []);
|
}
|
}
|
}
|
}
|
|
exports.HTMLParser = HTMLParser;
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exports.HTMLtoXML = function(html) {
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var results = '';
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new HTMLParser(html, {
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start: function(tag, attrs, unary) {
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results += '<' + tag;
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for (var i = 0, len = attrs.length; i < len; i++) {
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results += ' ' + attrs[i].name + '="' + (attrs[i].value || '').replace(/"/g, '"') + '"';
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}
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results += (unary ? '/' : '') + '>';
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},
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end: function(tag) {
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results += '</' + tag + '>';
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},
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chars: function(text) {
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results += text;
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},
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comment: function(text) {
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results += '<!--' + text + '-->';
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},
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ignore: function(text) {
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results += text;
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}
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});
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return results;
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};
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exports.HTMLtoDOM = function(html, doc) {
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// There can be only one of these elements
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var one = {
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html: true,
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head: true,
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body: true,
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title: true
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};
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// Enforce a structure for the document
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var structure = {
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link: 'head',
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base: 'head'
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};
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if (doc) {
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doc = doc.ownerDocument || doc.getOwnerDocument && doc.getOwnerDocument() || doc;
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}
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else if (typeof DOMDocument !== 'undefined') {
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doc = new DOMDocument();
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}
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else if (typeof document !== 'undefined' && document.implementation && document.implementation.createDocument) {
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doc = document.implementation.createDocument('', '', null);
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}
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else if (typeof ActiveX !== 'undefined') {
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doc = new ActiveXObject('Msxml.DOMDocument');
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}
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var elems = [],
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documentElement = doc.documentElement ||
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doc.getDocumentElement && doc.getDocumentElement();
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// If we're dealing with an empty document then we
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// need to pre-populate it with the HTML document structure
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if (!documentElement && doc.createElement) {
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(function() {
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var html = doc.createElement('html');
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var head = doc.createElement('head');
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head.appendChild(doc.createElement('title'));
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html.appendChild(head);
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html.appendChild(doc.createElement('body'));
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doc.appendChild(html);
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})();
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}
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// Find all the unique elements
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if (doc.getElementsByTagName) {
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for (var i in one) {
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one[i] = doc.getElementsByTagName(i)[0];
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}
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}
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// If we're working with a document, inject contents into
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// the body element
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var curParentNode = one.body;
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new HTMLParser(html, {
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start: function(tagName, attrs, unary) {
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// If it's a pre-built element, then we can ignore
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// its construction
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if (one[tagName]) {
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curParentNode = one[tagName];
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return;
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}
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var elem = doc.createElement(tagName);
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for (var attr in attrs) {
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elem.setAttribute(attrs[attr].name, attrs[attr].value);
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}
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if (structure[tagName] && typeof one[structure[tagName]] !== 'boolean') {
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one[structure[tagName]].appendChild(elem);
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}
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else if (curParentNode && curParentNode.appendChild) {
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curParentNode.appendChild(elem);
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}
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if (!unary) {
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elems.push(elem);
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curParentNode = elem;
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}
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},
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end: function(/* tag */) {
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elems.length -= 1;
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// Init the new parentNode
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curParentNode = elems[elems.length - 1];
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},
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chars: function(text) {
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curParentNode.appendChild(doc.createTextNode(text));
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},
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comment: function(/* text */) {
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// create comment node
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},
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ignore: function(/* text */) {
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// What to do here?
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}
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});
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return doc;
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};
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