jquery.htmlClean.min.js

(function($){$.fn.htmlClean=function(options){return this.each(function(){if(this.value){this.value=$.htmlClean(this.value,options)}else{this.innerHTML=$.htmlClean(this.innerHTML,options)}})};$.htmlClean=function(html,options){options=$.extend({},$.htmlClean.defaults,options);options.allowEmpty=tagAllowEmpty.concat(options.allowEmpty);var tagsRE=/(<(\/)?(\w+:)?([\w]+)([^>]*)>)|<!--(.*?--)>/gi;var attrsRE=/([\w\-]+)\s*=\s*(".*?"|'.*?'|[^\s>\/]*)/gi;var tagMatch;var root=new Element();var stack=[root];var container=root;if(options.bodyOnly){if(tagMatch=/<body[^>]*>((\n|.)*)<\/body>/i.exec(html)){html=tagMatch[1]}}html=html.concat("<xxx>");var lastIndex;while(tagMatch=tagsRE.exec(html)){var tag=tagMatch[6]?new Tag("--",null,tagMatch[6],options):new Tag(tagMatch[4],tagMatch[2],tagMatch[5],options);var text=html.substring(lastIndex,tagMatch.index);if(text.length>0){var child=container.children[container.children.length-1];if(container.children.length>0&&isText(child=container.children[container.children.length-1])){container.children[container.children.length-1]=child.concat(text)}else{container.children.push(text)}}lastIndex=tagsRE.lastIndex;if(tag.isClosing){if(popToTagName(stack,[tag.name])){stack.pop();container=stack[stack.length-1]}}else{var element=new Element(tag);var attrMatch;while(attrMatch=attrsRE.exec(tag.rawAttributes)){if(attrMatch[1].toLowerCase()=="style"&&options.replaceStyles){var renderParent=!tag.isInline;for(var i=0;i<options.replaceStyles.length;i++){if(options.replaceStyles[i][0].test(attrMatch[2])){if(!renderParent){tag.render=false;renderParent=true}container.children.push(element);stack.push(element);container=element;tag=new Tag(options.replaceStyles[i][1],"","",options);element=new Element(tag)}}}if(tag.allowedAttributes!=null&&(tag.allowedAttributes.length==0||$.inArray(attrMatch[1],tag.allowedAttributes)>-1)){element.attributes.push(new Attribute(attrMatch[1],attrMatch[2]))}}$.each(tag.requiredAttributes,function(){var name=this.toString();if(!element.hasAttribute(name)){element.attributes.push(new Attribute(name,""))}});for(var repIndex=0;repIndex<options.replace.length;repIndex++){for(var tagIndex=0;tagIndex<options.replace[repIndex][0].length;tagIndex++){var byName=typeof(options.replace[repIndex][0][tagIndex])=="string";if((byName&&options.replace[repIndex][0][tagIndex]==tag.name)||(!byName&&options.replace[repIndex][0][tagIndex].test(tagMatch))){tag.rename(options.replace[repIndex][1]);repIndex=options.replace.length;break}}}var add=true;if(!container.isRoot){if(container.tag.isInline&&!tag.isInline){if(add=popToContainer(stack)){container=stack[stack.length-1]}}else{if(container.tag.disallowNest&&tag.disallowNest&&!tag.requiredParent){add=false}else{if(tag.requiredParent){if(add=popToTagName(stack,tag.requiredParent)){container=stack[stack.length-1]}}}}}if(add){container.children.push(element);if(tag.toProtect){var tagMatch2;while(tagMatch2=tagsRE.exec(html)){var tag2=new Tag(tagMatch2[4],tagMatch2[1],tagMatch2[5],options);if(tag2.isClosing&&tag2.name==tag.name){element.children.push(RegExp.leftContext.substring(lastIndex));lastIndex=tagsRE.lastIndex;break}}}else{if(!tag.isSelfClosing&&!tag.isNonClosing){stack.push(element);container=element}}}}}return $.htmlClean.trim(render(root,options).join(""))};$.htmlClean.defaults={bodyOnly:true,allowedTags:[],removeTags:["basefont","center","dir","font","frame","frameset","iframe","isindex","menu","noframes","s","strike","u"],allowedAttributes:[],removeAttrs:[],allowedClasses:[],format:false,formatIndent:0,replace:[[["b","big"],"strong"],[["i"],"em"]],replaceStyles:[[/font-weight:\s*bold/i,"strong"],[/font-style:\s*italic/i,"em"],[/vertical-align:\s*super/i,"sup"],[/vertical-align:\s*sub/i,"sub"]],allowComments:false,allowEmpty:[]};function applyFormat(element,options,output,indent){if(element.tag.format&&output.length>0){output.push("\n");for(var i=0;i<indent;i++){output.push("\t")}}}function render(element,options){var output=[],empty=element.attributes.length==0,indent=0;if(element.tag.isComment){if(options.allowComments){output.push("<!--");output.push(element.tag.rawAttributes);output.push(">");if(options.format){applyFormat(element,options,output,indent-1)}}}else{var renderTag=element.tag.render&&(options.allowedTags.length==0||$.inArray(element.tag.name,options.allowedTags)>-1)&&(options.removeTags.length==0||$.inArray(element.tag.name,options.removeTags)==-1);if(!element.isRoot&&renderTag){output.push("<");output.push(element.tag.name);$.each(element.attributes,function(){if($.inArray(this.name,options.removeAttrs)==-1){var m=RegExp(/^(['"]?)(.*?)['"]?$/).exec(this.value);var value=m[2];var valueQuote=m[1]||"'";if(this.name=="class"&&options.allowedClasses.length>0){value=$.grep(value.split(" "),function(c){return $.grep(options.allowedClasses,function(a){return a==c||(a[0]==c&&(a.length==1||$.inArray(element.tag.name,a[1])>-1))}).length>0}).join(" ")}if(value!=null&&(value.length>0||$.inArray(this.name,element.tag.requiredAttributes)>-1)){output.push(" ");output.push(this.name);output.push("=");output.push(valueQuote);output.push(value);output.push(valueQuote)}}})}if(element.tag.isSelfClosing){if(renderTag){output.push(" />")}empty=false}else{if(element.tag.isNonClosing){empty=false}else{if(!element.isRoot&&renderTag){output.push(">")}indent=options.formatIndent++;if(element.tag.toProtect){outputChildren=$.htmlClean.trim(element.children.join("")).replace(/<br>/ig,"\n");output.push(outputChildren);empty=outputChildren.length==0}else{var outputChildren=[];for(var i=0;i<element.children.length;i++){var child=element.children[i];var text=$.htmlClean.trim(textClean(isText(child)?child:child.childrenToString()));if(isInline(child)){if(i>0&&text.length>0&&(startsWithWhitespace(child)||endsWithWhitespace(element.children[i-1]))){outputChildren.push(" ")}}if(isText(child)){if(text.length>0){outputChildren.push(text)}}else{if(i!=element.children.length-1||child.tag.name!="br"){if(options.format){applyFormat(child,options,outputChildren,indent)}outputChildren=outputChildren.concat(render(child,options))}}}options.formatIndent--;if(outputChildren.length>0){if(options.format&&outputChildren[0]!="\n"){applyFormat(element,options,output,indent)}output=output.concat(outputChildren);empty=false}}if(!element.isRoot&&renderTag){if(options.format){applyFormat(element,options,output,indent-1)}output.push("</");output.push(element.tag.name);output.push(">")}}}if(!element.tag.allowEmpty&&empty){return[]}}return output}function popToTagName(stack,tagNameArray){return pop(stack,function(element){return $.inArray(element.tag.nameOriginal,tagNameArray)>-1})}function popToContainer(stack){return pop(stack,function(element){return element.isRoot||!element.tag.isInline})}function pop(stack,test,index){index=index||1;var element=stack[stack.length-index];if(test(element)){return true}else{if(stack.length-index>0&&pop(stack,test,index+1)){stack.pop();return true}}return false}function Element(tag){if(tag){this.tag=tag;this.isRoot=false}else{this.tag=new Tag("root");this.isRoot=true}this.attributes=[];this.children=[];this.hasAttribute=function(name){for(var i=0;i<this.attributes.length;i++){if(this.attributes[i].name==name){return true}}return false};this.childrenToString=function(){return this.children.join("")};return this}function Attribute(name,value){this.name=name;this.value=value;return this}function Tag(name,close,rawAttributes,options){this.name=name.toLowerCase();this.nameOriginal=this.name;this.render=true;this.init=function(){if(this.name=="--"){this.isComment=true;this.isSelfClosing=true;this.format=true}else{this.isComment=false;this.isSelfClosing=$.inArray(this.name,tagSelfClosing)>-1;this.isNonClosing=$.inArray(this.name,tagNonClosing)>-1;this.isClosing=(close!=undefined&&close.length>0);this.isInline=$.inArray(this.name,tagInline)>-1;this.disallowNest=$.inArray(this.name,tagDisallowNest)>-1;this.requiredParent=tagRequiredParent[$.inArray(this.name,tagRequiredParent)+1];this.allowEmpty=options&&$.inArray(this.name,options.allowEmpty)>-1;this.toProtect=$.inArray(this.name,tagProtect)>-1;this.format=$.inArray(this.name,tagFormat)>-1||!this.isInline}this.rawAttributes=rawAttributes;this.requiredAttributes=tagAttributesRequired[$.inArray(this.name,tagAttributesRequired)+1];if(options){if(!options.tagAttributesCache){options.tagAttributesCache=[]}if($.inArray(this.name,options.tagAttributesCache)==-1){var cacheItem=tagAttributes[$.inArray(this.name,tagAttributes)+1].slice(0);for(var i=0;i<options.allowedAttributes.length;i++){var attrName=options.allowedAttributes[i][0];if((options.allowedAttributes[i].length==1||$.inArray(this.name,options.allowedAttributes[i][1])>-1)&&$.inArray(attrName,cacheItem)==-1){cacheItem.push(attrName)}}options.tagAttributesCache.push(this.name);options.tagAttributesCache.push(cacheItem)}this.allowedAttributes=options.tagAttributesCache[$.inArray(this.name,options.tagAttributesCache)+1]}};this.init();this.rename=function(newName){this.name=newName;this.init()};return this}function startsWithWhitespace(item){while(isElement(item)&&item.children.length>0){item=item.children[0]}if(!isText(item)){return false}var text=textClean(item);return text.length>0&&$.htmlClean.isWhitespace(text.charAt(0))}function endsWithWhitespace(item){while(isElement(item)&&item.children.length>0){item=item.children[item.children.length-1]}if(!isText(item)){return false}var text=textClean(item);return text.length>0&&$.htmlClean.isWhitespace(text.charAt(text.length-1))}function isText(item){return item.constructor==String}function isInline(item){return isText(item)||item.tag.isInline}function isElement(item){return item.constructor==Element}function textClean(text){return text.replace(/&nbsp;|\n/g," ").replace(/\s\s+/g," ")}$.htmlClean.trim=function(text){return $.htmlClean.trimStart($.htmlClean.trimEnd(text))};$.htmlClean.trimStart=function(text){return text.substring($.htmlClean.trimStartIndex(text))};$.htmlClean.trimStartIndex=function(text){for(var start=0;start<text.length-1&&$.htmlClean.isWhitespace(text.charAt(start));start++){}return start};$.htmlClean.trimEnd=function(text){return text.substring(0,$.htmlClean.trimEndIndex(text))};$.htmlClean.trimEndIndex=function(text){for(var end=text.length-1;end>=0&&$.htmlClean.isWhitespace(text.charAt(end));end--){}return end+1};$.htmlClean.isWhitespace=function(c){return $.inArray(c,whitespace)!=-1};var tagInline=["a","abbr","acronym","address","b","big","br","button","caption","cite","code","del","em","font","hr","i","input","img","ins","label","legend","map","q","s","samp","select","option","param","small","span","strike","strong","sub","sup","tt","u","var"];var tagFormat=["address","button","caption","code","input","label","legend","select","option","param"];var tagDisallowNest=["h1","h2","h3","h4","h5","h6","p","th","td","object"];var tagAllowEmpty=["th","td"];var tagRequiredParent=[null,"li",["ul","ol"],"dt",["dl"],"dd",["dl"],"td",["tr"],"th",["tr"],"tr",["table","thead","tbody","tfoot"],"thead",["table"],"tbody",["table"],"tfoot",["table"],"param",["object"]];var tagProtect=["script","style","pre","code"];var tagSelfClosing=["area","base","br","col","command","embed","hr","img","input","keygen","link","meta","param","source","track","wbr"];var tagNonClosing=["!doctype","?xml"];var tagAttributes=[["class"],"?xml",[],"!doctype",[],"a",["accesskey","class","href","name","title","rel","rev","type","tabindex"],"abbr",["class","title"],"acronym",["class","title"],"blockquote",["cite","class"],"button",["class","disabled","name","type","value"],"del",["cite","class","datetime"],"form",["accept","action","class","enctype","method","name"],"iframe",["class","height","name","sandbox","seamless","src","srcdoc","width"],"input",["accept","accesskey","alt","checked","class","disabled","ismap","maxlength","name","size","readonly","src","tabindex","type","usemap","value"],"img",["alt","class","height","src","width"],"ins",["cite","class","datetime"],"label",["accesskey","class","for"],"legend",["accesskey","class"],"link",["href","rel","type"],"meta",["content","http-equiv","name","scheme","charset"],"map",["name"],"optgroup",["class","disabled","label"],"option",["class","disabled","label","selected","value"],"q",["class","cite"],"script",["src","type"],"select",["class","disabled","multiple","name","size","tabindex"],"style",["type"],"table",["class","summary"],"th",["class","colspan","rowspan"],"td",["class","colspan","rowspan"],"textarea",["accesskey","class","cols","disabled","name","readonly","rows","tabindex"],"param",["name","value"],"embed",["height","src","type","width"]];var tagAttributesRequired=[[],"img",["alt"]];var whitespace=[" "," ","\t","\n","\r","\f"]})(jQuery);