You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 

303 lines
9.9 KiB

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