130 lines
4.8 KiB
JavaScript
130 lines
4.8 KiB
JavaScript
"use strict";
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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;
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var codeTag = /^<code.*?>([\s\S]*?)<\/code>/;
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var empty = makeMap("area,base,basefont,br,col,frame,hr,img,input,link,meta,param,embed,command,keygen,source,track,wbr");
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var block = makeMap("a,address,code,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");
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var inline = makeMap("abbr,acronym,applet,b,basefont,bdo,big,br,button,cite,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");
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var closeSelf = makeMap("colgroup,dd,dt,li,options,p,td,tfoot,th,thead,tr");
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var fillAttrs = makeMap("checked,compact,declare,defer,disabled,ismap,multiple,nohref,noresize,noshade,nowrap,readonly,selected");
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var special = makeMap("wxxxcode-style,script,style,view,scroll-view,block");
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var codeContent = "";
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function HTMLParser(html, handler) {
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var index, chars, match, stack = [], last = html;
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stack.last = function() {
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return this[this.length - 1];
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};
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while (html) {
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chars = true;
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if (!stack.last() || !special[stack.last()]) {
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if (html.indexOf("<!--") == 0) {
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index = html.indexOf("-->");
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if (index >= 0) {
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if (handler.comment)
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handler.comment(html.substring(4, index));
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html = html.substring(index + 3);
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chars = false;
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}
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} else if (html.indexOf("</") == 0) {
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match = html.match(endTag);
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if (match) {
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html = html.substring(match[0].length);
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match[0].replace(endTag, parseEndTag);
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chars = false;
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}
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} else if (html.indexOf("<") == 0) {
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match = html.match(startTag);
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if (match) {
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var tagName = match[1];
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if (tagName === "code") {
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var codeTagMatch = html.match(codeTag);
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codeContent = codeTagMatch[1] || "";
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}
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html = html.substring(match[0].length);
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match[0].replace(startTag, parseStartTag);
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chars = false;
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}
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}
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if (chars) {
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index = html.indexOf("<");
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var text = "";
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while (index === 0) {
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text += "<";
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html = html.substring(1);
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index = html.indexOf("<");
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}
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text += index < 0 ? html : html.substring(0, index);
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html = index < 0 ? "" : html.substring(index);
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if (handler.chars && text.trim() !== "") {
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handler.chars(text);
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}
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}
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} else {
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html = html.replace(new RegExp("([\\s\\S]*?)</" + stack.last() + "[^>]*>"), function(all, text2) {
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text2 = text2.replace(/<!--([\s\S]*?)-->|<!\[CDATA\[([\s\S]*?)]]>/g, "$1$2");
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if (handler.chars && text2.trim() !== "")
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handler.chars(text2);
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return "";
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});
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parseEndTag("", stack.last());
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}
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if (html == last)
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throw "Parse Error: " + html;
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last = html;
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}
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parseEndTag();
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function parseStartTag(tag, tagName2, rest, unary) {
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tagName2 = tagName2.toLowerCase();
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if (block[tagName2]) {
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while (stack.last() && inline[stack.last()]) {
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parseEndTag("", stack.last());
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}
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}
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if (closeSelf[tagName2] && stack.last() == tagName2) {
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parseEndTag("", tagName2);
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}
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unary = empty[tagName2] || !!unary;
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if (!unary)
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stack.push(tagName2);
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if (handler.start) {
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var attrs = [];
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rest.replace(attr, function(match2, name) {
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var value = arguments[2] ? arguments[2] : arguments[3] ? arguments[3] : arguments[4] ? arguments[4] : fillAttrs[name] ? name : "";
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attrs.push({
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name,
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value,
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escaped: value.replace(/(^|[^\\])"/g, '$1\\"')
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//"
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});
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});
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if (handler.start) {
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var tagContent = codeContent || "";
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handler.start(tagName2, attrs, unary, tagContent);
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codeContent = "";
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}
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}
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}
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function parseEndTag(tag, tagName2) {
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if (!tagName2)
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var pos = 0;
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else {
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tagName2 = tagName2.toLowerCase();
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for (var pos = stack.length - 1; pos >= 0; pos--)
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if (stack[pos] == tagName2)
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break;
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}
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if (pos >= 0) {
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for (var i = stack.length - 1; i >= pos; i--)
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if (handler.end)
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handler.end(stack[i]);
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stack.length = pos;
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}
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}
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}
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function makeMap(str) {
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var obj = {}, items = str.split(",");
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for (var i = 0; i < items.length; i++)
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obj[items[i]] = true;
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return obj;
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}
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exports.HTMLParser = HTMLParser;
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