frontend/examking-app/plugins/uview-ui/components/u-parse/libs/MpHtmlParser.js

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/**
 * html 解析器
 * @tutorial https://github.com/jin-yufeng/Parser
 * @version 20201014
 * @author JinYufeng
 * @listens MIT
 */
const cfg = require('./config.js'),
	blankChar = cfg.blankChar,
	CssHandler = require('./CssHandler.js'),
	windowWidth = uni.getSystemInfoSync().windowWidth;
var emoji;

function MpHtmlParser(data, options = {}) {
	this.attrs = {};
	this.CssHandler = new CssHandler(options.tagStyle, windowWidth);
	this.data = data;
	this.domain = options.domain;
	this.DOM = [];
	this.i = this.start = this.audioNum = this.imgNum = this.videoNum = 0;
	options.prot = (this.domain || '').includes('://') ? this.domain.split('://')[0] : 'http';
	this.options = options;
	this.state = this.Text;
	this.STACK = [];
	// 工具函数
	this.bubble = () => {
		for (var i = this.STACK.length, item; item = this.STACK[--i];) {
			if (cfg.richOnlyTags[item.name]) return false;
			item.c = 1;
		}
		return true;
	}
	this.decode = (val, amp) => {
		var i = -1,
			j, en;
		while (1) {
			if ((i = val.indexOf('&', i + 1)) == -1) break;
			if ((j = val.indexOf(';', i + 2)) == -1) break;
			if (val[i + 1] == '#') {
				en = parseInt((val[i + 2] == 'x' ? '0' : '') + val.substring(i + 2, j));
				if (!isNaN(en)) val = val.substr(0, i) + String.fromCharCode(en) + val.substr(j + 1);
			} else {
				en = val.substring(i + 1, j);
				if (cfg.entities[en] || en == amp)
					val = val.substr(0, i) + (cfg.entities[en] || '&') + val.substr(j + 1);
			}
		}
		return val;
	}
	this.getUrl = url => {
		if (url[0] == '/') {
			if (url[1] == '/') url = this.options.prot + ':' + url;
			else if (this.domain) url = this.domain + url;
		} else if (this.domain && url.indexOf('data:') != 0 && !url.includes('://'))
			url = this.domain + '/' + url;
		return url;
	}
	this.isClose = () => this.data[this.i] == '>' || (this.data[this.i] == '/' && this.data[this.i + 1] == '>');
	this.section = () => this.data.substring(this.start, this.i);
	this.parent = () => this.STACK[this.STACK.length - 1];