3 * Original code by Erik John Resig (ejohn.org)
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4 * http://ejohn.org/blog/pure-javascript-html-parser/
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9 alphabets : 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz',
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10 whiteSpace : '\t\r\n\f\b ',
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12 // Empty Elements - HTML 4.01
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13 empty : X.Dom.DTD.EMPTY,
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15 // Block Elements - HTML 4.01
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16 block : {address:1,applet:1,blockquote:1,button:1,center:1,dd:1,del:1,dir:1,div:1,dl:1,dt:1,fieldset:1,form:1,frameset:1,hr:1,iframe:1,ins:1,isindex:1,li:1,map:1,menu:1,noframes:1,noscript:1,object:1,ol:1,p:1,pre:1,script:1,table:1,tbody:1,td:1,tfoot:1,th:1,thead:1,tr:1,ul:1},
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18 // Inline Elements - HTML 4.01
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19 inline : {a:1,abbr:1,acronym:1,applet:1,b:1,basefont:1,bdo:1,big:1,br:1,button:1,cite:1,code:1,del:1,dfn:1,em:1,font:1,i:1,iframe:1,img:1,input:1,ins:1,kbd:1,label:1,map:1,object:1,q:1,s:1,samp:1,script:1,select:1,small:1,span:1,strike:1,strong:1,sub:1,sup:1,textarea:1,tt:1,u:1,'var':1},
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21 // Elements that you can, intentionally, leave open
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22 // (and which close themselves)
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23 closeSelf : {colgroup:1,dd:1,dt:1,li:1,options:1,p:1,tbody:1,td:1,tfoot:1,th:1,thead:1,tr:1}, // add tbody
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26 plainText : { plaintext : 1, xmp : 1 },
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33 colgroup : { caption : 1 },
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34 thead : { caption : 1, colgroup : 1 },
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35 tfoot : { caption : 1, colgroup : 1, thead : 1, tbody : 1 },
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36 tbody : { caption : 1, colgroup : 1, thead : 1, tfoot : 1 }
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39 * http://www.tohoho-web.com/html/tbody.htm
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40 * HTML4.01では、ヘッダとフッタを先読みして表示するために、<tbody> よりも <tfoot> の方を先に記述しなくてはならないと定義されています。
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41 * IE5.0 などでは HEAD → BODY → FOOT の順に表示するのですが、
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42 * <tfoot> に未対応の古いブラウザでは、HEAD → FOOT → BODY の順に表示されてしまいます。
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43 * また、HTML5 では、<tfoot> と <tbody> の順番はどちらでもよいことになりました。
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46 // Attributes that have their values filled in disabled="disabled"
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47 fillAttrs : X.Dom.Attr.noValue, //{checked:1,compact:1,declare:1,defer:1,disabled:1,ismap:1,multiple:1,nohref:1,noresize:1,noshade:1,nowrap:1,readonly:1,selected:1};
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49 // Special Elements (can contain anything)
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50 special : {script:1,style:1},
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52 start : function( html, handler, async ){
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53 var special = X.Dom.Parser.special,
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54 startTime = async && X.getTime(),
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55 _parseStartTag = X.Dom.Parser._parseStartTag,
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56 _parseEndTag = X.Dom.Parser._parseEndTag,
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57 stack = async ? async[ 1 ] : [],
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59 chars, last, text, index;
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63 last = stack[ stack.length - 1 ];
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65 // Make sure we're not in a script or style element
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66 if ( last && special[ last.toLowerCase() ] === 1 ) {
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67 if( 0 <= ( index = _parseEndTag( stack, handler, html ) ) ){
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68 //handler.chars( html.substring( 0, index ) );
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69 html = html.substring( index );
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73 if ( html.indexOf("<!--") === 0 ) {
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74 if ( 0 < ( index = html.indexOf("-->") ) ) {
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75 handler.comment( html.substring( 4, index ) );
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76 html = html.substring( index + 3 );
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81 } else if ( html.indexOf("</") === 0 ) {
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82 if ( 2 < ( index = _parseEndTag( stack, handler, html ) ) ) {
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83 html = html.substring( index );
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88 } else if ( html.indexOf("<") === 0 ) {
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89 if( index = _parseStartTag( stack, last, handler, html ) ){
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90 html = html.substring( index );
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93 if( index === false ){
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99 index = html.indexOf("<");
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101 text = index < 0 ? html : html.substring( 0, index );
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102 html = index < 0 ? '' : html.substring( index );
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104 handler.chars( text );
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109 if( html === lastHtml ){
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110 handler.err( html );
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114 if( async && startTime + 15 <= X.getTime() && html ){
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115 handler.progress( 1 - html.length / async[ 0 ] );
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116 X.Timer.once( 0, X.Dom.Parser.start, [ html, handler, async ] );
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123 // Clean up any remaining tags
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124 X.Dom.Parser.parseEndTag( stack, handler );
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126 async && handler.complete();
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129 _parseStartTag : function( stack, last, handler, html ){
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130 var alphabets = X.Dom.Parser.alphabets,
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131 whiteSpace = X.Dom.Parser.whiteSpace,
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132 saveAttr = X.Dom.Parser.saveAttr,
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133 uri = X.Dom.DTD.ATTR_VAL_IS_URI,
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139 chr, start, attrName, quot, escape;
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141 while( i < l && phase < 9 ){
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142 chr = html.charAt( i );
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145 chr === '<' && ( ++phase );
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147 case 1 : // タグ名の開始を待つ
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148 alphabets.indexOf( chr ) !== -1 && ( ++phase && ( start = i ) );
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150 case 2 : // タグ名の終わりの空白文字を待つ
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151 whiteSpace.indexOf( chr ) !== -1 ?
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152 ( ++phase && ( tagName = html.substring( start, i ) ) ) :
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153 ( chr === '>' || ( empty = html.substr( i, 2 ) === '/>' ) ) &&
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154 ( ( tagName = html.substring( start, i ) ) && ( phase = 9 ) );
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156 case 3 : // 属性名の開始を待つ
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157 alphabets.indexOf( chr ) !== -1 ?
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158 ( ++phase && ( start = i ) ) :
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159 ( chr === '>' || ( empty = html.substr( i, 2 ) === '/>' ) ) &&
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162 case 4 : // 属性名の終わりを待つ
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164 ( ( phase = 6 ) && ( attrName = html.substring( start, i ) ) ) :
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165 whiteSpace.indexOf( chr ) !== -1 &&
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166 ( ( phase = 5 ) && ( attrName = html.substring( start, i ) ) );
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168 case 5 : // 属性の = または次の属性または htmlタグの閉じ
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169 whiteSpace.indexOf( chr ) !== -1 ?// ie4 未対応の属性には cite = http:// となる
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171 alphabets.indexOf( chr ) !== -1 ?
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172 ( ( phase = 4 ) && ( attrs[ attrs.length ] = attrName ) && ( start = i ) ) :
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175 ( chr === '>' || ( empty = html.substr( i, 2 ) === '/>' ) ) &&
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176 ( ( phase = 9 ) && ( attrs[ attrs.length ] = attrName ) );
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178 case 6 : // 属性値の開始 quot を待つ
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179 ( chr === '"' || chr === "'" ) ?
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180 ( ( phase = 7 ) && ( quot = chr ) && ( start = i + 1 ) ):
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181 whiteSpace.indexOf( chr ) === -1 &&
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182 ( ( phase = 8 ) && ( start = i ) ); // no quot
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184 case 7 : //属性値の閉じ quot を待つ
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185 !escape && ( chr === quot ) && ( phase = 3 ) && saveAttr( attrs, attrName, html.substring( start, i ) );
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187 case 8 : //閉じ quot のない属性の値
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188 whiteSpace.indexOf( chr ) !== -1 ?
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189 ( ( phase = 3 ) && saveAttr( attrs, attrName, html.substring( start, i ) ) ) :
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191 ( ( phase = 9 ) && saveAttr( attrs, attrName, html.substring( start, i ) ) ) :
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192 ( !escape && uri.indexOf( attrName ) === -1 && html.substr( i, 2 ) === '\/>' ) && // attr の val が uri で / で終わりかつ、未対応属性の場合
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196 escape = chr === '\\' && !escape; // \\\\ is not escape for "
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200 if( X.Dom.Parser.parseStartTag( stack, last, handler, tagName, attrs, empty, i ) === false ) return false;
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206 _parseEndTag : function( stack, handler, html ){
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207 var alphabets = X.Dom.Parser.alphabets,
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208 whiteSpace = X.Dom.Parser.whiteSpace,
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215 while( i < l && phase < 9 ){
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216 chr = html.charAt( i );
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219 html.substr( i, 2 ) === '</' && ( ++phase && ++i );
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221 case 1 : // タグ名の開始を待つ
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222 alphabets.indexOf( chr ) !== -1 && ( ++phase && ( start = i ) );
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224 case 2 : // タグ名の終わりの空白文字を待つ
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225 whiteSpace.indexOf( chr ) !== -1 && ( ++phase );
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226 ( chr === '>' ) && ( phase = 9 );
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227 ( phase !== 2 ) && ( tagName = html.substring( start, i ) );
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229 case 3 : // 属性名の開始を待つ
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230 chr === '>' && ( phase = 9 );
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236 X.Dom.Parser.parseEndTag( stack, handler, tagName );
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242 saveAttr : function( attrs, name, value ){
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243 name = name.toLowerCase();
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244 value = X.Dom.Parser.fillAttrs[ name ] === 1 ? name : value;
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245 attrs[ attrs.length ] = {
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249 value.indexOf( '"' ) !== -1 ?
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250 value.split( '"' ).join( '\\"' ).split( '\\\\"' ).join( '\\"' ) :
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255 parseStartTag : function( stack, last, handler, tagName, attrs, unary, index ) {
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256 var tagLower = tagName.toLowerCase(),
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257 inline = X.Dom.Parser.inline,
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258 parseEndTag = X.Dom.Parser.parseEndTag,
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259 sisters = X.Dom.Parser.sisters;
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260 if ( X.Dom.Parser.block[ tagLower ] === 1 ) {
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261 while ( last && inline[ last.toLowerCase() ] === 1 ) {
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262 parseEndTag( stack, handler, last );
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263 last = stack[ stack.length - 1 ];
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266 X.Dom.Parser.closeSelf[ tagLower ] === 1 && ( last === tagName || ( sisters[ tagLower ] && sisters[ tagLower ][ last.toLowerCase() ] === 1 ) ) && parseEndTag( stack, handler, last );
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267 unary = X.Dom.Parser.empty[ tagLower ] === 1 || !!unary;
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268 !unary && ( stack[ stack.length ] = tagName );
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270 return handler.start( tagName, attrs, unary, index );
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273 parseEndTag : function( stack, handler, tagName ) {
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274 var pos = 0, i = stack.length;
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275 // If no tag name is provided, clean shop
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277 // Find the closest opened tag of the same type
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279 for ( pos = i; 0 <= pos; )
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280 if ( stack[ --pos ] === tagName )
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284 // Close all the open elements, up the stack
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286 handler.end( stack[ --i ] );
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288 // Remove the open elements from the stack
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289 stack.length = pos;
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295 X.Dom._htmlStringToXNode = {
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298 err : function( html ){
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299 X.Dom._htmlStringToXNode.flat.length = 0;
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300 X.Dom._htmlStringToXNode.ignoreError !== true && X.Notification.warn( 'X.Dom.Parser() error ' + html );
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302 start : function( tagName, attrs, noChild, length ){
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304 nest = X.Dom._htmlStringToXNode.nest,
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305 flat = X.Dom._htmlStringToXNode.flat,
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307 attr, name, i, _attrs; //, toIndex;
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309 xnode = nest[ l - 1 ].create( tagName );
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311 xnode = flat[ flat.length ] = X.Dom.Node.create( tagName );
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313 if( !noChild ) nest[ l ] = xnode;
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314 if( i = attrs.length ){
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317 if( attr = attrs[ --i ] ){
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318 if( typeof attr === 'string' ){
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320 _attrs[ name ] = true;
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323 _attrs[ name ] = attr.escaped;
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327 xnode.attr( _attrs );
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331 0 < X.Dom._htmlStringToXNode.nest.length && ( --X.Dom._htmlStringToXNode.nest.length );
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333 chars : function( text ){
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334 if( X.Dom._htmlStringToXNode.nest.length ){
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335 X.Dom._htmlStringToXNode.nest[ X.Dom._htmlStringToXNode.nest.length - 1 ].createText( text );
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337 X.Dom._htmlStringToXNode.flat[ X.Dom._htmlStringToXNode.flat.length ] = X.Dom.Node.createText( text );
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340 comment : X.emptyFunction
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343 X.Dom.parse = function( html, ignoreError ){
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344 var worker = X.Dom._htmlStringToXNode, ret;
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346 worker.nest.length = 0;
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347 worker.ignoreError = ignoreError;
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348 X.Dom.Parser.start( html, worker );
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350 delete worker.flat;
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354 X.Dom._asyncHtmlStringToXNode = {
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355 err : function( html ){
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356 X.Dom._htmlStringToXNode.err( html );
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357 this.asyncDispatch( 0, { type : X.Event.ERROR } );
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359 start : function( tagName, attrs, noChild, length ){
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360 X.Dom._htmlStringToXNode.start( tagName, attrs, noChild, length );
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363 X.Dom._htmlStringToXNode.end();
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365 chars : function( text ){
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366 X.Dom._htmlStringToXNode.chars( text );
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368 comment : X.emptyFunction,
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370 progress : function( pct ){
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371 this.asyncDispatch( 0, { type : X.Event.PROGRESS, progress : pct } );
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373 complete : function(){
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374 var ret = X.Dom._htmlStringToXNode.flat;
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375 delete X.Dom._htmlStringToXNode.flat;
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376 this.asyncDispatch( 0, { type : X.Event.SUCCESS, xnodes : ret } );
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380 X.Dom.asyncParse = function( html, ignoreError ){
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381 var dispatcher = X.Class._override( new X.EventDispatcher(), X.Dom._asyncHtmlStringToXNode ),
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382 worker = X.Dom._htmlStringToXNode;
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383 dispatcher.listenOnce( X.Event.SUCCESS, dispatcher, dispatcher.kill );
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385 worker.nest.length = 0;
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386 worker.ignoreError = ignoreError;
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387 X.Dom.Parser.start( html, dispatcher, [ html.length, [] ] );
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