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304 lines
9.9 KiB
304 lines
9.9 KiB
3 years ago
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/**
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* html2Json 改造来自: https://github.com/Jxck/html2json
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*
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*
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* author: Di (微信小程序开发工程师)
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* organization: WeAppDev(微信小程序开发论坛)(http://weappdev.com)
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* 垂直微信小程序开发交流社区
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*
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* github地址: https://github.com/icindy/wxParse
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*
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* for: 微信小程序富文本解析
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* detail : http://weappdev.com/t/wxparse-alpha0-1-html-markdown/184
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*/
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var __placeImgeUrlHttps = "https";
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var __emojisReg = '';
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var __emojisBaseSrc = '';
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var __emojis = {};
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var wxDiscode = require('./wxDiscode.js');
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var HTMLParser = require('./htmlparser.js');
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// Empty Elements - HTML 5
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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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// Block Elements - HTML 5
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var block = makeMap("br,a,code,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");
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// Inline Elements - HTML 5
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var inline = makeMap("abbr,acronym,applet,b,basefont,bdo,big,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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// 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,options,p,td,tfoot,th,thead,tr");
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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("wxxxcode-style,script,style,view,scroll-view,block");
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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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function q(v) {
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return '"' + v + '"';
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}
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function removeDOCTYPE(html) {
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return html
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.replace(/<\?xml.*\?>\n/, '')
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.replace(/<.*!doctype.*\>\n/, '')
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.replace(/<.*!DOCTYPE.*\>\n/, '');
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}
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function trimHtml(html) {
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return html
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.replace(/\r?\n+/g, '')
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.replace(/<!--.*?-->/ig, '')
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.replace(/\/\*.*?\*\//ig, '')
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.replace(/[ ]+</ig, '<')
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}
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function html2json(html, bindName) {
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//处理字符串
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html = removeDOCTYPE(html);
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html = trimHtml(html);
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html = wxDiscode.strDiscode(html);
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//生成node节点
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var bufArray = [];
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var results = {
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node: bindName,
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nodes: [],
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images:[],
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imageUrls:[]
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};
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var index = 0;
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HTMLParser(html, {
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start: function (tag, attrs, unary) {
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//debug(tag, attrs, unary);
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// node for this element
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var node = {
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node: 'element',
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tag: tag,
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};
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if (bufArray.length === 0) {
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node.index = index.toString()
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index += 1
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} else {
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var parent = bufArray[0];
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if (parent.nodes === undefined) {
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parent.nodes = [];
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}
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node.index = parent.index + '.' + parent.nodes.length
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}
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if (block[tag]) {
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node.tagType = "block";
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} else if (inline[tag]) {
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node.tagType = "inline";
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} else if (closeSelf[tag]) {
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node.tagType = "closeSelf";
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}
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if (attrs.length !== 0) {
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node.attr = attrs.reduce(function (pre, attr) {
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var name = attr.name;
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var value = attr.value;
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if (name == 'class') {
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console.dir(value);
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// value = value.join("")
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node.classStr = value;
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}
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// has multi attibutes
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// make it array of attribute
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if (name == 'style') {
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console.dir(value);
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// value = value.join("")
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node.styleStr = value;
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}
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if (value.match(/ /)) {
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value = value.split(' ');
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}
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// if attr already exists
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// merge it
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if (pre[name]) {
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if (Array.isArray(pre[name])) {
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// already array, push to last
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pre[name].push(value);
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} else {
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// single value, make it array
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pre[name] = [pre[name], value];
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}
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} else {
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// not exist, put it
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pre[name] = value;
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}
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return pre;
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}, {});
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}
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//对img添加额外数据
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if (node.tag === 'img') {
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node.imgIndex = results.images.length;
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var imgUrl = node.attr.src;
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if (imgUrl[0] == '') {
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imgUrl.splice(0, 1);
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}
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imgUrl = wxDiscode.urlToHttpUrl(imgUrl, __placeImgeUrlHttps);
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node.attr.src = imgUrl;
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node.from = bindName;
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results.images.push(node);
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results.imageUrls.push(imgUrl);
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}
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// 处理font标签样式属性
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if (node.tag === 'font') {
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var fontSize = ['x-small', 'small', 'medium', 'large', 'x-large', 'xx-large', '-webkit-xxx-large'];
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var styleAttrs = {
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'color': 'color',
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'face': 'font-family',
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'size': 'font-size'
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};
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if (!node.attr.style) node.attr.style = [];
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if (!node.styleStr) node.styleStr = '';
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for (var key in styleAttrs) {
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if (node.attr[key]) {
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var value = key === 'size' ? fontSize[node.attr[key]-1] : node.attr[key];
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node.attr.style.push(styleAttrs[key]);
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node.attr.style.push(value);
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node.styleStr += styleAttrs[key] + ': ' + value + ';';
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}
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}
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}
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//临时记录source资源
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if(node.tag === 'source'){
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results.source = node.attr.src;
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}
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if (unary) {
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// if this tag doesn't have end tag
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// like <img src="hoge.png"/>
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// add to parents
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var parent = bufArray[0] || results;
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if (parent.nodes === undefined) {
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parent.nodes = [];
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}
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parent.nodes.push(node);
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} else {
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bufArray.unshift(node);
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}
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},
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end: function (tag) {
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//debug(tag);
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// merge into parent tag
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var node = bufArray.shift();
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if (node.tag !== tag) console.error('invalid state: mismatch end tag');
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//当有缓存source资源时于于video补上src资源
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if(node.tag === 'video' && results.source){
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node.attr.src = results.source;
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delete results.source;
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}
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if (bufArray.length === 0) {
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results.nodes.push(node);
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} else {
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var parent = bufArray[0];
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if (parent.nodes === undefined) {
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parent.nodes = [];
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}
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parent.nodes.push(node);
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}
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},
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chars: function (text) {
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//debug(text);
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var node = {
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node: 'text',
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text: text,
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textArray:transEmojiStr(text)
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};
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if (bufArray.length === 0) {
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node.index = index.toString()
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index += 1
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results.nodes.push(node);
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} else {
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var parent = bufArray[0];
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if (parent.nodes === undefined) {
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parent.nodes = [];
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}
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node.index = parent.index + '.' + parent.nodes.length
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parent.nodes.push(node);
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}
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},
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comment: function (text) {
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//debug(text);
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// var node = {
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// node: 'comment',
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// text: text,
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// };
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// var parent = bufArray[0];
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// if (parent.nodes === undefined) {
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// parent.nodes = [];
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// }
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// parent.nodes.push(node);
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},
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});
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return results;
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};
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function transEmojiStr(str){
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// var eReg = new RegExp("["+__reg+' '+"]");
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// str = str.replace(/\[([^\[\]]+)\]/g,':$1:')
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var emojiObjs = [];
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//如果正则表达式为空
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if(__emojisReg.length == 0 || !__emojis){
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var emojiObj = {}
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emojiObj.node = "text";
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emojiObj.text = str;
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array = [emojiObj];
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return array;
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}
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//这个地方需要调整
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str = str.replace(/\[([^\[\]]+)\]/g,':$1:')
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var eReg = new RegExp("[:]");
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var array = str.split(eReg);
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for(var i = 0; i < array.length; i++){
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var ele = array[i];
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var emojiObj = {};
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if(__emojis[ele]){
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emojiObj.node = "element";
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emojiObj.tag = "emoji";
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emojiObj.text = __emojis[ele];
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emojiObj.baseSrc= __emojisBaseSrc;
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}else{
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emojiObj.node = "text";
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emojiObj.text = ele;
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}
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emojiObjs.push(emojiObj);
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}
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return emojiObjs;
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}
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function emojisInit(reg='',baseSrc="/wxParse/emojis/",emojis){
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__emojisReg = reg;
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__emojisBaseSrc=baseSrc;
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__emojis=emojis;
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}
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module.exports = {
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html2json: html2json,
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emojisInit:emojisInit
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};
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