yichael_intomovie/uni_modules/uview-plus/components/u-parse/parser-es-module.js

"use strict";

/**
 * @fileoverview html 解析器
 */
// 配置
const config = {
    // 信任的标签（保持标签名不变）
    trustTags: makeMap(
        "a,abbr,ad,audio,b,blockquote,br,code,col,colgroup,dd,del,dl,dt,div,em,fieldset,h1,h2,h3,h4,h5,h6,hr,i,img,ins,label,legend,li,ol,p,q,ruby,rt,source,span,strong,sub,sup,table,tbody,td,tfoot,th,thead,tr,title,ul,video"
    ),
    // 块级标签（转为 div，其他的非信任标签转为 span）
    blockTags: makeMap("address,article,aside,body,caption,center,cite,footer,header,html,nav,pre,section"),
    // 要移除的标签
    ignoreTags: makeMap(
        "area,base,canvas,embed,frame,head,iframe,input,link,map,meta,param,rp,script,source,style,textarea,title,track,wbr"
    ),
    // 自闭合的标签
    voidTags: makeMap(
        "area,base,br,col,circle,ellipse,embed,frame,hr,img,input,line,link,meta,param,path,polygon,rect,source,track,use,wbr"
    ),
    // html 实体
    entities: {
        lt: "<",
        gt: ">",
        quot: '"',
        apos: "'",
        ensp: "\u2002",
        emsp: "\u2003",
        nbsp: "\xA0",
        semi: ";",
        ndash: "–",
        mdash: "—",
        middot: "·",
        lsquo: "‘",
        rsquo: "’",
        ldquo: "“",
        rdquo: "”",
        bull: "•",
        hellip: "…",
    },
    // 默认的标签样式
    tagStyle: {
        // #ifndef APP-PLUS-NVUE
        address: "font-style:italic",
        big: "display:inline;font-size:1.2em",
        caption: "display:table-caption;text-align:center",
        center: "text-align:center",
        cite: "font-style:italic",
        dd: "margin-left:40px",
        mark: "background-color:yellow",
        pre: "font-family:monospace;white-space:pre",
        s: "text-decoration:line-through",
        small: "display:inline;font-size:0.8em",
        u: "text-decoration:underline", // #endif
    },
};
const { windowWidth } = uni.getSystemInfoSync();
const blankChar = makeMap(" ,\r,\n,\t,\f");
let idIndex = 0; // #ifdef H5 || APP-PLUS

config.ignoreTags.iframe = void 0;
config.trustTags.iframe = true;
config.ignoreTags.embed = void 0;
config.trustTags.embed = true; // #endif
// #ifdef APP-PLUS-NVUE

config.ignoreTags.source = void 0;
config.ignoreTags.style = void 0; // #endif

/**
 * @description 创建 map
 * @param {String} str 逗号分隔
 */

function makeMap(str) {
    const map = Object.create(null);
    const list = str.split(",");

    for (let i = list.length; i--;) {
        map[list[i]] = true;
    }

    return map;
}
/**
 * @description 解码 html 实体
 * @param {String} str 要解码的字符串
 * @param {Boolean} amp 要不要解码 &amp;
 * @returns {String} 解码后的字符串
 */

function decodeEntity(str, amp) {
    let i = str.indexOf("&");

    while (i != -1) {
        const j = str.indexOf(";", i + 3);
        let code = void 0;
        if (j == -1) break;

        if (str[i + 1] == "#") {
            // &#123; 形式的实体
            code = parseInt((str[i + 2] == "x" ? "0" : "") + str.substring(i + 2, j));
            if (!isNaN(code)) str = str.substr(0, i) + String.fromCharCode(code) + str.substr(j + 1);
        } else {
            // &nbsp; 形式的实体
            code = str.substring(i + 1, j);
            if (config.entities[code] || (code == "amp" && amp))
                str = str.substr(0, i) + (config.entities[code] || "&") + str.substr(j + 1);
        }

        i = str.indexOf("&", i + 1);
    }

    return str;
}
/**
 * @description html 解析器
 * @param {Object} vm 组件实例
 */

class parser {
    constructor(vm) {
        this.options = vm || {};
        this.tagStyle = Object.assign(config.tagStyle, this.options.tagStyle);
        this.imgList = vm.imgList || [];
        this.plugins = vm.plugins || [];
        this.attrs = Object.create(null);
        this.stack = [];
        this.nodes = [];
    }
    /**
     * @description 执行解析
     * @param {String} content 要解析的文本
     */
    parse(content) {
        // 插件处理
        for (let i = this.plugins.length; i--;) {
            if (this.plugins[i].onUpdate) content = this.plugins[i].onUpdate(content, config) || content;
        }

        new lexer(this).parse(content); // 出栈未闭合的标签

        while (this.stack.length) {
            this.popNode();
        }

        return this.nodes;
    }
    /**
     * @description 将标签暴露出来（不被 rich-text 包含）
     */
    expose() {
        // #ifndef APP-PLUS-NVUE
        for (let i = this.stack.length; i--;) {
            const item = this.stack[i];
            if (item.name == "a" || item.c) return;
            item.c = 1;
        } // #endif
    }

    /**
     * @description 处理插件
     * @param {Object} node 要处理的标签
     * @returns {Boolean} 是否要移除此标签
     */

    hook(node) {
        for (let i = this.plugins.length; i--;) {
            if (this.plugins[i].onParse && this.plugins[i].onParse(node, this) == false) return false;
        }

        return true;
    }
    /**
     * @description 将链接拼接上主域名
     * @param {String} url 需要拼接的链接
     * @returns {String} 拼接后的链接
     */

    getUrl(url) {
        const { domain } = this.options;

        if (url[0] == "/") {
            // // 开头的补充协议名
            if (url[1] == "/") url = `${domain ? domain.split("://")[0] : "http"}:${url}`; // 否则补充整个域名
            else if (domain) url = domain + url;
        } else if (domain && !url.includes("data:") && !url.includes("://")) url = `${domain}/${url}`;

        return url;
    }
    /**
     * @description 解析样式表
     * @param {Object} node 标签
     * @returns {Object}
     */

    parseStyle(node) {
        const { attrs } = node;
        const list = (this.tagStyle[node.name] || "").split(";").concat((attrs.style || "").split(";"));
        const styleObj = {};
        let tmp = "";

        if (attrs.id) {
            // 暴露锚点
            if (this.options.useAnchor) this.expose();
            else if (node.name != "img" && node.name != "a" && node.name != "video" && node.name != "audio")
                attrs.id = void 0;
        } // 转换 width 和 height 属性

        if (attrs.width) {
            styleObj.width = parseFloat(attrs.width) + (attrs.width.includes("%") ? "%" : "px");
            attrs.width = void 0;
        }

        if (attrs.height) {
            styleObj.height = parseFloat(attrs.height) + (attrs.height.includes("%") ? "%" : "px");
            attrs.height = void 0;
        }

        for (let i = 0, len = list.length; i < len; i++) {
            const info = list[i].split(":");
            if (info.length < 2) continue;
            const key = info.shift().trim().toLowerCase();
            let value = info.join(":").trim(); // 兼容性的 css 不压缩

            if ((value[0] == "-" && value.lastIndexOf("-") > 0) || value.includes("safe"))
                tmp += ";".concat(key, ":").concat(value); // 重复的样式进行覆盖
            else if (!styleObj[key] || value.includes("import") || !styleObj[key].includes("import")) {
                // 填充链接
                if (value.includes("url")) {
                    let j = value.indexOf("(") + 1;

                    if (j) {
                        while (value[j] == '"' || value[j] == "'" || blankChar[value[j]]) {
                            j++;
                        }

                        value = value.substr(0, j) + this.getUrl(value.substr(j));
                    }
                } // 转换 rpx（rich-text 内部不支持 rpx）
                else if (value.includes("rpx")) {
                    value = value.replace(/[0-9.]+\s*rpx/g, ($) => `${(parseFloat($) * windowWidth) / 750}px`);
                }

                styleObj[key] = value;
            }
        }

        node.attrs.style = tmp;
        return styleObj;
    }
    /**
   * @description 解析到标签名
   * @param {String} name 标签名
   * @private
   */
    onTagName(name) {
        this.tagName = this.xml ? name : name.toLowerCase();
        if (this.tagName == "svg") this.xml = true; // svg 标签内大小写敏感
    };
    /**
     * @description 解析到属性名
     * @param {String} name 属性名
     * @private
     */
    onAttrName(name) {
        name = this.xml ? name : name.toLowerCase();

        if (name.substr(0, 5) == "data-") {
            // data-src 自动转为 src
            if (name == "data-src" && !this.attrs.src)
                this.attrName = "src"; // a 和 img 标签保留 data- 的属性，可以在 imgtap 和 linktap 事件中使用
            else if (this.tagName == "img" || this.tagName == "a") this.attrName = name; // 剩余的移除以减小大小
            else this.attrName = void 0;
        } else {
            this.attrName = name;
            this.attrs[name] = "T"; // boolean 型属性缺省设置
        }
    };
    /**
     * @description 解析到属性值
     * @param {String} val 属性值
     * @private
     */
    onAttrVal(val) {
        const name = this.attrName || ""; // 部分属性进行实体解码

        if (name == "style" || name == "href") this.attrs[name] = decodeEntity(val, true); // 拼接主域名
        else if (name.includes("src")) this.attrs[name] = this.getUrl(decodeEntity(val, true));
        else if (name) this.attrs[name] = val;
    };
    
    /**
   * @description 解析到标签开始
   * @param {Boolean} selfClose 是否有自闭合标识 />
   * @private
   */
    onOpenTag(selfClose) {
        // 拼装 node
        const node = Object.create(null);
        node.name = this.tagName;
        node.attrs = this.attrs;
        this.attrs = Object.create(null);
        const { attrs } = node;
        const parent = this.stack[this.stack.length - 1];
        const siblings = parent ? parent.children : this.nodes;
        const close = this.xml ? selfClose : config.voidTags[node.name]; // 转换 embed 标签

        if (node.name == "embed") {
            // #ifndef H5 || APP-PLUS
            const src = attrs.src || ""; // 按照后缀名和 type 将 embed 转为 video 或 audio

            if (src.includes(".mp4") || src.includes(".3gp") || src.includes(".m3u8") || (attrs.type || "").includes("video"))
                node.name = "video";
            else if (
                src.includes(".mp3") ||
                src.includes(".wav") ||
                src.includes(".aac") ||
                src.includes(".m4a") ||
                (attrs.type || "").includes("audio")
            )
                node.name = "audio";
            if (attrs.autostart) attrs.autoplay = "T";
            attrs.controls = "T"; // #endif
            // #ifdef H5 || APP-PLUS

            this.expose(); // #endif
        } // #ifndef APP-PLUS-NVUE
        // 处理音视频

        if (node.name == "video" || node.name == "audio") {
            // 设置 id 以便获取 context
            if (node.name == "video" && !attrs.id) attrs.id = `v${idIndex++}`; // 没有设置 controls 也没有设置 autoplay 的自动设置 controls

            if (!attrs.controls && !attrs.autoplay) attrs.controls = "T"; // 用数组存储所有可用的 source

            node.src = [];

            if (attrs.src) {
                node.src.push(attrs.src);
                attrs.src = void 0;
            }

            this.expose();
        } // #endif
        // 处理自闭合标签

        if (close) {
            if (!this.hook(node) || config.ignoreTags[node.name]) {
                // 通过 base 标签设置主域名
                if (node.name == "base" && !this.options.domain) this.options.domain = attrs.href; // #ifndef APP-PLUS-NVUE
                // 设置 source 标签（仅父节点为 video 或 audio 时有效）
                else if (node.name == "source" && parent && (parent.name == "video" || parent.name == "audio") && attrs.src)
                    parent.src.push(attrs.src); // #endif

                return;
            } // 解析 style

            const styleObj = this.parseStyle(node); // 处理图片

            if (node.name == "img") {
                if (attrs.src) {
                    // 标记 webp
                    if (attrs.src.includes("webp")) node.webp = "T"; // data url 图片如果没有设置 original-src 默认为不可预览的小图片

                    if (attrs.src.includes("data:") && !attrs["original-src"]) attrs.ignore = "T";

                    if (!attrs.ignore || node.webp || attrs.src.includes("cloud://")) {
                        for (let i = this.stack.length; i--;) {
                            const item = this.stack[i];

                            if (item.name == "a") {
                                node.a = item.attrs;
                                break;
                            } // #ifndef H5 || APP-PLUS

                            const style = item.attrs.style || "";

                            if (
                                style.includes("flex:") &&
                                !style.includes("flex:0") &&
                                !style.includes("flex: 0") &&
                                (!styleObj.width || !styleObj.width.includes("%"))
                            ) {
                                styleObj.width = "100% !important";
                                styleObj.height = "";

                                for (let j = i + 1; j < this.stack.length; j++) {
                                    this.stack[j].attrs.style = (this.stack[j].attrs.style || "").replace("inline-", "");
                                }
                            } else if (style.includes("flex") && styleObj.width == "100%") {
                                for (let _j = i + 1; _j < this.stack.length; _j++) {
                                    const _style = this.stack[_j].attrs.style || "";

                                    if (!_style.includes(";width") && !_style.includes(" width") && _style.indexOf("width") != 0) {
                                        styleObj.width = "";
                                        break;
                                    }
                                }
                            } else if (style.includes("inline-block")) {
                                if (styleObj.width && styleObj.width[styleObj.width.length - 1] == "%") {
                                    item.attrs.style += `;max-width:${styleObj.width}`;
                                    styleObj.width = "";
                                } else item.attrs.style += ";max-width:100%";
                            } // #endif

                            item.c = 1;
                        }

                        attrs.i = this.imgList.length.toString();

                        let _src = attrs["original-src"] || attrs.src; // #ifndef H5 || MP-ALIPAY || APP-PLUS || MP-360

                        if (this.imgList.includes(_src)) {
                            // 如果有重复的链接则对域名进行随机大小写变换避免预览时错位
                            let _i = _src.indexOf("://");

                            if (_i != -1) {
                                _i += 3;

                                let newSrc = _src.substr(0, _i);

                                for (; _i < _src.length; _i++) {
                                    if (_src[_i] == "/") break;
                                    newSrc += Math.random() > 0.5 ? _src[_i].toUpperCase() : _src[_i];
                                }

                                newSrc += _src.substr(_i);
                                _src = newSrc;
                            }
                        } // #endif

                        this.imgList.push(_src); // #ifdef H5 || APP-PLUS

                        if (this.options.lazyLoad) {
                            attrs["data-src"] = attrs.src;
                            attrs.src = void 0;
                        } // #endif
                    }
                }

                if (styleObj.display == "inline") styleObj.display = ""; // #ifndef APP-PLUS-NVUE

                if (attrs.ignore) {
                    styleObj["max-width"] = styleObj["max-width"] || "100%";
                    attrs.style += ";-webkit-touch-callout:none";
                } // #endif
                // 设置的宽度超出屏幕，为避免变形，高度转为自动

                if (parseInt(styleObj.width) > windowWidth) styleObj.height = void 0; // 记录是否设置了宽高

                if (styleObj.width) {
                    if (styleObj.width.includes("auto")) styleObj.width = "";
                    else {
                        node.w = "T";
                        if (styleObj.height && !styleObj.height.includes("auto")) node.h = "T";
                    }
                }
            } else if (node.name == "svg") {
                siblings.push(node);
                this.stack.push(node);
                this.popNode();
                return;
            }

            for (const key in styleObj) {
                if (styleObj[key]) attrs.style += ";".concat(key, ":").concat(styleObj[key].replace(" !important", ""));
            }

            attrs.style = attrs.style.substr(1) || void 0;
        } else {
            if (node.name == "pre" || ((attrs.style || "").includes("white-space") && attrs.style.includes("pre")))
                this.pre = node.pre = true;
            node.children = [];
            this.stack.push(node);
        } // 加入节点树

        siblings.push(node);
    };
    /**
     * @description 解析到标签结束
     * @param {String} name 标签名
     * @private
     */

    onCloseTag(name) {
        // 依次出栈到匹配为止
        name = this.xml ? name : name.toLowerCase();
        let i;

        for (i = this.stack.length; i--;) {
            if (this.stack[i].name == name) break;
        }

        if (i != -1) {
            while (this.stack.length > i) {
                this.popNode();
            }
        } else if (name == "p" || name == "br") {
            const siblings = this.stack.length ? this.stack[this.stack.length - 1].children : this.nodes;
            siblings.push({
                name,
                attrs: {},
            });
        }
    };
    /**
     * @description 处理标签出栈
     * @private
     */

    popNode() {
        const node = this.stack.pop();
        let { attrs } = node;
        const { children } = node;
        const parent = this.stack[this.stack.length - 1];
        const siblings = parent ? parent.children : this.nodes;

        if (!this.hook(node) || config.ignoreTags[node.name]) {
            // 获取标题
            if (node.name == "title" && children.length && children[0].type == "text" && this.options.setTitle) {
                uni.setNavigationBarTitle({
                    title: children[0].text,
                });
            }
            siblings.pop();
            return;
        }

        if (node.pre) {
            // 是否合并空白符标识
            node.pre = this.pre = void 0;

            for (let i = this.stack.length; i--;) {
                if (this.stack[i].pre) this.pre = true;
            }
        }

        const styleObj = {}; // 转换 svg

        if (node.name == "svg") {
            // #ifndef APP-PLUS-NVUE
            let src = "";
            const { style } = attrs;
            attrs.style = "";
            attrs.xmlns = "http://www.w3.org/2000/svg";

            (function traversal(node) {
                src += `<${node.name}`;

                for (let item in node.attrs) {
                    const val = node.attrs[item];

                    if (val) {
                        if (item == "viewbox") item = "viewBox";
                        src += " ".concat(item, '="').concat(val, '"');
                    }
                }

                if (!node.children) src += "/>";
                else {
                    src += ">";

                    for (let _i2 = 0; _i2 < node.children.length; _i2++) {
                        traversal(node.children[_i2]);
                    }

                    src += `</${node.name}>`;
                }
            })(node);

            node.name = "img";
            node.attrs = {
                src: `data:image/svg+xml;utf8,${src.replace(/#/g, "%23")}`,
                style,
                ignore: "T",
            };
            node.children = void 0; // #endif

            this.xml = false;
            return;
        } // #ifndef APP-PLUS-NVUE
        // 转换 align 属性

        if (attrs.align) {
            if (node.name == "table") {
                if (attrs.align == "center") styleObj["margin-inline-start"] = styleObj["margin-inline-end"] = "auto";
                else styleObj.float = attrs.align;
            } else styleObj["text-align"] = attrs.align;

            attrs.align = void 0;
        } // 转换 font 标签的属性

        if (node.name == "font") {
            if (attrs.color) {
                styleObj.color = attrs.color;
                attrs.color = void 0;
            }

            if (attrs.face) {
                styleObj["font-family"] = attrs.face;
                attrs.face = void 0;
            }

            if (attrs.size) {
                let size = parseInt(attrs.size);

                if (!isNaN(size)) {
                    if (size < 1) size = 1;
                    else if (size > 7) size = 7;
                    styleObj["font-size"] = ["xx-small", "x-small", "small", "medium", "large", "x-large", "xx-large"][size - 1];
                }

                attrs.size = void 0;
            }
        } // #endif
        // 一些编辑器的自带 class

        if ((attrs.class || "").includes("align-center")) styleObj["text-align"] = "center";
        Object.assign(styleObj, this.parseStyle(node));

        if (parseInt(styleObj.width) > windowWidth) {
            styleObj["max-width"] = "100%";
            styleObj["box-sizing"] = "border-box";
        } // #ifndef APP-PLUS-NVUE

        if (config.blockTags[node.name]) node.name = "div"; // 未知标签转为 span，避免无法显示
        else if (!config.trustTags[node.name] && !this.xml) node.name = "span";
        if (node.name == 'a' || node.name == 'ad' // #ifdef H5 || APP-PLUS
  || node.name == 'iframe' // #endif
    ) this.expose() // #ifdef APP-PLUS
        else if (node.name == "video") {
            let str = '<video style="width:100%;height:100%"'; // 空白图占位

            if (!attrs.poster && !attrs.autoplay)
                attrs.poster = "data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'/>";

            for (const item in attrs) {
                if (attrs[item]) str += ` ${item}="${attrs[item]}"`;
            }

            if (this.options.pauseVideo)
                str += " onplay=\"for(var e=document.getElementsByTagName('video'),t=0;t<e.length;t++)e[t]!=this&&e[t].pause()\"";
            str += ">";

            for (let _i3 = 0; _i3 < node.src.length; _i3++) {
                str += `<source src="${node.src[_i3]}">`;
            }

            str += "</video>";
            node.html = str;
        } // #endif
        // 列表处理
        else if ((node.name == "ul" || node.name == "ol") && node.c) {
            const types = {
                a: "lower-alpha",
                A: "upper-alpha",
                i: "lower-roman",
                I: "upper-roman",
            };

            if (types[attrs.type]) {
                attrs.style += `;list-style-type:${types[attrs.type]}`;
                attrs.type = void 0;
            }

            for (let _i4 = children.length; _i4--;) {
                if (children[_i4].name == "li") children[_i4].c = 1;
            }
        } // 表格处理
        else if (node.name == "table") {
            // cellpadding、cellspacing、border 这几个常用表格属性需要通过转换实现
            let padding = parseFloat(attrs.cellpadding);
            let spacing = parseFloat(attrs.cellspacing);
            const border = parseFloat(attrs.border);

            if (node.c) {
                // padding 和 spacing 默认 2
                if (isNaN(padding)) padding = 2;
                if (isNaN(spacing)) spacing = 2;
            }

            if (border) attrs.style += `;border:${border}px solid gray`;

            if (node.flag && node.c) {
                // 有 colspan 或 rowspan 且含有链接的表格通过 grid 布局实现
                styleObj.display = "grid";

                if (spacing) {
                    styleObj["grid-gap"] = `${spacing}px`;
                    styleObj.padding = `${spacing}px`;
                } // 无间隔的情况下避免边框重叠
                else if (border) attrs.style += ";border-left:0;border-top:0";

                const width = [];
                // 表格的列宽
                const trList = [];
                // tr 列表
                const cells = [];
                // 保存新的单元格
                const map = {}; // 被合并单元格占用的格子

                (function traversal(nodes) {
                    for (let _i5 = 0; _i5 < nodes.length; _i5++) {
                        if (nodes[_i5].name == "tr") trList.push(nodes[_i5]);
                        else traversal(nodes[_i5].children || []);
                    }
                })(children);

                for (let row = 1; row <= trList.length; row++) {
                    let col = 1;

                    for (let j = 0; j < trList[row - 1].children.length; j++, col++) {
                        const td = trList[row - 1].children[j];

                        if (td.name == "td" || td.name == "th") {
                            // 这个格子被上面的单元格占用，则列号++
                            while (map[`${row}.${col}`]) {
                                col++;
                            }

                            let _style2 = td.attrs.style || "";
                            const start = _style2.indexOf("width") ? _style2.indexOf(";width") : 0; // 提取出 td 的宽度

                            if (start != -1) {
                                let end = _style2.indexOf(";", start + 6);

                                if (end == -1) end = _style2.length;
                                if (!td.attrs.colspan) width[col] = _style2.substring(start ? start + 7 : 6, end);
                                _style2 = _style2.substr(0, start) + _style2.substr(end);
                            }

                            _style2 +=
                                (border
                                    ? ";border:".concat(border, "px solid gray") + (spacing ? "" : ";border-right:0;border-bottom:0")
                                    : "") + (padding ? ";padding:".concat(padding, "px") : ""); // 处理列合并

                            if (td.attrs.colspan) {
                                _style2 += ";grid-column-start:"
                                    .concat(col, ";grid-column-end:")
                                    .concat(col + parseInt(td.attrs.colspan));
                                if (!td.attrs.rowspan) _style2 += ";grid-row-start:".concat(row, ";grid-row-end:").concat(row + 1);
                                col += parseInt(td.attrs.colspan) - 1;
                            } // 处理行合并

                            if (td.attrs.rowspan) {
                                _style2 += ";grid-row-start:".concat(row, ";grid-row-end:").concat(row + parseInt(td.attrs.rowspan));
                                if (!td.attrs.colspan) _style2 += ";grid-column-start:".concat(col, ";grid-column-end:").concat(col + 1); // 记录下方单元格被占用

                                for (let k = 1; k < td.attrs.rowspan; k++) {
                                    map[`${row + k}.${col}`] = 1;
                                }
                            }

                            if (_style2) td.attrs.style = _style2;
                            cells.push(td);
                        }
                    }

                    if (row == 1) {
                        let temp = "";

                        for (let _i6 = 1; _i6 < col; _i6++) {
                            temp += `${width[_i6] ? width[_i6] : "auto"} `;
                        }

                        styleObj["grid-template-columns"] = temp;
                    }
                }

                node.children = cells;
            } else {
                // 没有使用合并单元格的表格通过 table 布局实现
                if (node.c) styleObj.display = "table";
                if (!isNaN(spacing)) styleObj["border-spacing"] = `${spacing}px`;

                if (border || padding) {
                    // 遍历
                    (function traversal(nodes) {
                        for (let _i7 = 0; _i7 < nodes.length; _i7++) {
                            const _td = nodes[_i7];

                            if (_td.name == "th" || _td.name == "td") {
                                if (border) _td.attrs.style = "border:".concat(border, "px solid gray;").concat(_td.attrs.style || "");
                                if (padding) _td.attrs.style = "padding:".concat(padding, "px;").concat(_td.attrs.style || "");
                            } else if (_td.children) traversal(_td.children);
                        }
                    })(children);
                }
            } // 给表格添加一个单独的横向滚动层

            if (this.options.scrollTable && !(attrs.style || "").includes("inline")) {
                const table = { ...node };
                node.name = "div";
                node.attrs = {
                    style: "overflow:auto",
                };
                node.children = [table];
                attrs = table.attrs;
            }
        } else if ((node.name == "td" || node.name == "th") && (attrs.colspan || attrs.rowspan)) {
            for (let _i8 = this.stack.length; _i8--;) {
                if (this.stack[_i8].name == "table") {
                    this.stack[_i8].flag = 1; // 指示含有合并单元格

                    break;
                }
            }
        } // 转换 ruby
        else if (node.name == "ruby") {
            node.name = "span";

            for (let _i9 = 0; _i9 < children.length - 1; _i9++) {
                if (children[_i9].type == "text" && children[_i9 + 1].name == "rt") {
                    children[_i9] = {
                        name: "div",
                        attrs: {
                            style: "display:inline-block",
                        },
                        children: [
                            {
                                name: "div",
                                attrs: {
                                    style: "font-size:50%;text-align:start",
                                },
                                children: children[_i9 + 1].children,
                            },
                            children[_i9],
                        ],
                    };
                    children.splice(_i9 + 1, 1);
                }
            }
        } else if (node.c) {
            node.c = 2;

            for (let _i10 = node.children.length; _i10--;) {
                if (!node.children[_i10].c || node.children[_i10].name == "table") node.c = 1;
            }
        }
        if ((styleObj.display || "").includes("flex") && !node.c) {
            for (let _i11 = children.length; _i11--;) {
                const _item = children[_i11];

                if (_item.f) {
                    _item.attrs.style = (_item.attrs.style || "") + _item.f;
                    _item.f = void 0;
                }
            }
        } // flex 布局时部分样式需要提取到 rich-text 外层

        const flex = parent && (parent.attrs.style || '').includes('flex') // #ifdef MP-WEIXIN
        // 检查基础库版本 virtualHost 是否可用
        && !(node.c && wx.getNFCAdapter) // #endif
        // #ifndef MP-WEIXIN || MP-QQ || MP-BAIDU || MP-TOUTIAO
        && !node.c // #endif

        if (flex) node.f = ';max-width:100%' // #endif

        for (const key in styleObj) {
            if (styleObj[key]) {
                const val = ";".concat(key, ":").concat(styleObj[key].replace(" !important", "")); // #ifndef APP-PLUS-NVUE

                if (
                    flex &&
                    ((key.includes("flex") && key != "flex-direction") ||
                        key == "align-self" ||
                        styleObj[key][0] == "-" ||
                        (key == "width" && val.includes("%")))
                ) {
                    node.f += val;
                    if (key == "width") attrs.style += ";width:100%";
                } // #endif
                else {
                    attrs.style += val;
                }
            }
        }

        attrs.style = attrs.style.substr(1) || void 0;
    };
    /**
     * @description 解析到文本
     * @param {String} text 文本内容
     */

    onText(text) {
        if (!this.pre) {
            // 合并空白符
            let trim = "";
            let flag;

            for (let i = 0, len = text.length; i < len; i++) {
                if (!blankChar[text[i]]) trim += text[i];
                else {
                    if (trim[trim.length - 1] != " ") trim += " ";
                    if (text[i] == "\n" && !flag) flag = true;
                }
            } // 去除含有换行符的空串

            if (trim == " " && flag) return;
            text = trim;
        }

        const node = Object.create(null);
        node.type = "text";
        node.text = decodeEntity(text);

        if (this.hook(node)) {
            const siblings = this.stack.length ? this.stack[this.stack.length - 1].children : this.nodes;
            siblings.push(node);
        }
    };
}

/**
 * @description html 词法分析器
 * @param {Object} handler 高层处理器
 */

function lexer(handler) {
    this.handler = handler;
}
/**
 * @description 执行解析
 * @param {String} content 要解析的文本
 */

lexer.prototype.parse = function (content) {
    this.content = content || "";
    this.i = 0; // 标记解析位置

    this.start = 0; // 标记一个单词的开始位置

    this.state = this.text; // 当前状态

    for (let len = this.content.length; this.i != -1 && this.i < len;) {
        this.state();
    }
};
/**
 * @description 检查标签是否闭合
 * @param {String} method 如果闭合要进行的操作
 * @returns {Boolean} 是否闭合
 * @private
 */

lexer.prototype.checkClose = function (method) {
    const selfClose = this.content[this.i] == "/";

    if (this.content[this.i] == ">" || (selfClose && this.content[this.i + 1] == ">")) {
        if (method) this.handler[method](this.content.substring(this.start, this.i));
        this.i += selfClose ? 2 : 1;
        this.start = this.i;
        this.handler.onOpenTag(selfClose);

        if (this.handler.tagName == "script") {
            this.i = this.content.indexOf("</", this.i);

            if (this.i != -1) {
                this.i += 2;
                this.start = this.i;
            }

            this.state = this.endTag;
        } else this.state = this.text;

        return true;
    }

    return false;
};
/**
 * @description 文本状态
 * @private
 */

lexer.prototype.text = function () {
    this.i = this.content.indexOf("<", this.i); // 查找最近的标签

    if (this.i == -1) {
        // 没有标签了
        if (this.start < this.content.length) this.handler.onText(this.content.substring(this.start, this.content.length));
        return;
    }

    const c = this.content[this.i + 1];

    if ((c >= "a" && c <= "z") || (c >= "A" && c <= "Z")) {
        // 标签开头
        if (this.start != this.i) this.handler.onText(this.content.substring(this.start, this.i));
        this.start = ++this.i;
        this.state = this.tagName;
    } else if (c == "/" || c == "!" || c == "?") {
        if (this.start != this.i) this.handler.onText(this.content.substring(this.start, this.i));
        const next = this.content[this.i + 2];

        if (c == "/" && ((next >= "a" && next <= "z") || (next >= "A" && next <= "Z"))) {
            // 标签结尾
            this.i += 2;
            this.start = this.i;
            return (this.state = this.endTag);
        } // 处理注释

        let end = "-->";
        if (c != "!" || this.content[this.i + 2] != "-" || this.content[this.i + 3] != "-") end = ">";
        this.i = this.content.indexOf(end, this.i);

        if (this.i != -1) {
            this.i += end.length;
            this.start = this.i;
        }
    } else this.i++;
};
/**
 * @description 标签名状态
 * @private
 */

lexer.prototype.tagName = function () {
    if (blankChar[this.content[this.i]]) {
        // 解析到标签名
        this.handler.onTagName(this.content.substring(this.start, this.i));

        while (blankChar[this.content[++this.i]]) { }

        if (this.i < this.content.length && !this.checkClose()) {
            this.start = this.i;
            this.state = this.attrName;
        }
    } else if (!this.checkClose("onTagName")) this.i++;
};
/**
 * @description 属性名状态
 * @private
 */

lexer.prototype.attrName = function () {
    let c = this.content[this.i];

    if (blankChar[c] || c == "=") {
        // 解析到属性名
        this.handler.onAttrName(this.content.substring(this.start, this.i));
        let needVal = c == "=";
        const len = this.content.length;

        while (++this.i < len) {
            c = this.content[this.i];

            if (!blankChar[c]) {
                if (this.checkClose()) return;

                if (needVal) {
                    // 等号后遇到第一个非空字符
                    this.start = this.i;
                    return (this.state = this.attrVal);
                }

                if (this.content[this.i] == "=") needVal = true;
                else {
                    this.start = this.i;
                    return (this.state = this.attrName);
                }
            }
        }
    } else if (!this.checkClose("onAttrName")) this.i++;
};
/**
 * @description 属性值状态
 * @private
 */

lexer.prototype.attrVal = function () {
    const c = this.content[this.i];
    const len = this.content.length; // 有冒号的属性

    if (c == '"' || c == "'") {
        this.start = ++this.i;
        this.i = this.content.indexOf(c, this.i);
        if (this.i == -1) return;
        this.handler.onAttrVal(this.content.substring(this.start, this.i));
    } // 没有冒号的属性
    else {
        for (; this.i < len; this.i++) {
            if (blankChar[this.content[this.i]]) {
                this.handler.onAttrVal(this.content.substring(this.start, this.i));
                break;
            } else if (this.checkClose("onAttrVal")) return;
        }
    }

    while (blankChar[this.content[++this.i]]) { }

    if (this.i < len && !this.checkClose()) {
        this.start = this.i;
        this.state = this.attrName;
    }
};
/**
 * @description 结束标签状态
 * @returns {String} 结束的标签名
 * @private
 */

lexer.prototype.endTag = function () {
    const c = this.content[this.i];

    if (blankChar[c] || c == ">" || c == "/") {
        this.handler.onCloseTag(this.content.substring(this.start, this.i));

        if (c != ">") {
            this.i = this.content.indexOf(">", this.i);
            if (this.i == -1) return;
        }

        this.start = ++this.i;
        this.state = this.text;
    } else this.i++;
};

export default parser