sulibao-mini/components/agent-ui/markdownPreview/towxml/parse/index.js

const parse2 = require('./parse2/index');
const // parse5 = require('./parse5/index').parse,
    config = require('../config');
const // html与wxml转换关系
    correspondTag = (() => {
        let result = {
            a: 'navigator',
            todogroup: 'checkbox-group',
            audio: 'audio-player'
        };

        // 该系列的标签都转换为text
        // ['span','b','strong','i','em','code','sub','sup','g-emoji','mark','ins','u'].forEach(item => {
        //     result[item] = 'text';
        // });

        // 该系列小程序原生tag，不需转换
        [...config.wxml, ...config.components].forEach((item) => {
            result[item] = item;
        });
        return result;
    })();
const // 元素与html对应的wxml标签名
    getWxmlTag = (tagStr) => (!tagStr ? undefined : correspondTag[tagStr] || 'view');
const // 依赖父级的元素
    relyList = ['li'];
const // 精简数据，并初始化相关事件等
    initObj = (obj, option) => {
        const result = {
            theme: option.theme || 'light',
            _e: {}
        };
        const events = (global._events = {});
        const base = option.base; // 主题保存到全局
        global._theme = result.theme;

        // 事件添加到全局中，各个组件在触发事件时会从全局调用
        if (option.events) {
            for (let key in option.events) {
                events[key] = option.events[key];
            }
        }
        // 遍历原始数据，处理成能解析的数据
        let eachFn;
        (eachFn = (arr, obj, _e, isRichTextContent) => {
            obj.children = obj.children || [];
            _e.child = _e.child || [];
            let child = obj.children;
            let child_e = _e.child;
            arr.forEach((item) => {
                if (item.type === 'comment') {
                    return;
                }
                let o = {
                    type: item.type === 'text' ? 'text' : isRichTextContent ? 'node' : item.type
                };
                let e = {};
                let attrs = (o.attrs = item.attribs || {});
                if (item.type === 'text') {
                    o.text = e.text = item.data;
                } else {
                    if (isRichTextContent) {
                        o.name = item.name;
                    } else {
                        o.tag = getWxmlTag(item.name); // 转换之后的标签
                        // o.tag = o.tag === 'text' ? 'view' : o.tag;
                        e.tag = item.name; // 原始
                        o.attrs = item.attribs;
                        e.attrs = JSON.parse(JSON.stringify(attrs));
                    }
                    attrs.class = attrs.class ? `h2w__${item.name} ${attrs.class}` : `h2w__${item.name}`;

                    // 处理资源相对路径
                    if (base && attrs.src) {
                        let src = attrs.src;
                        switch (src.indexOf('//')) {
                            case 0:
                                attrs.src = `https:${src}`;
                                break;
                            case -1:
                                attrs.src = `${base}${src}`;
                                break;
                        }
                    }
                }
                o.rely = relyList.indexOf(e.tag) > -1; // 判断是否不能嵌套其它标签

                if (item.children) {
                    eachFn(item.children, o, e, isRichTextContent || item.name === 'rich-text');
                }
                child.push(o);
                child_e.push(e);
            });
        })(obj, result, result._e, false);
        return result;
    };
module.exports = (str, option) => {
    str = (() => {
        let re = /<body[^>]*>([\s\S]*)<\/body>/i;
        if (re.test(str)) {
            let result = re.exec(str);
            return result[1] || str;
        } else {
            return str;
        }
    })();
    return initObj(
        parse2(str, {
            decodeEntities: true
        }),
        option
    );
};