feat: 替换了markdown 的组件

uni_modules/zero-markdown-view/components/mp-html/highlight/config.js

@@ -0,0 +1,6 @@
+export default {
+  // copyByLongPress: false, // 是否需要长按代码块时显示复制代码内容菜单
+  copyByClickCode: true, // 点击代码块复制
+  showLanguageName: true, // 是否在代码块右上角显示语言的名称
+  // showLineNumber: false // 是否显示行号,需要重新打包mp-html
+}

uni_modules/zero-markdown-view/components/mp-html/highlight/index.js

@@ -0,0 +1,119 @@
+/**
+ * @fileoverview highlight 插件
+ * Include prismjs (https://prismjs.com)
+ */
+import prism from "./prism.min";
+import config from "./config";
+import Parser from "../parser";
+
+function Highlight(vm) {
+  this.vm = vm;
+}
+
+Highlight.prototype.onParse = function (node, vm) {
+  if (node.name === "pre") {
+    if (vm.options.editable) {
+      node.attrs.class = (node.attrs.class || "") + " hl-pre";
+      return;
+    }
+    let i;
+    for (i = node.children.length; i--; ) {
+      if (node.children[i].name === "code") break;
+    }
+    if (i === -1) return;
+    const code = node.children[i];
+    let className = code.attrs.class + " " + node.attrs.class;
+    i = className.indexOf("language-");
+    if (i === -1) {
+      i = className.indexOf("lang-");
+      if (i === -1) {
+        className = "language-text";
+        i = 9;
+      } else {
+        i += 5;
+      }
+    } else {
+      i += 9;
+    }
+    let j;
+    for (j = i; j < className.length; j++) {
+      if (className[j] === " ") break;
+    }
+    const lang = className.substring(i, j);
+    if (code.children.length) {
+      const text = this.vm.getText(code.children).replace(/&amp;/g, "&");
+      if (!text) return;
+      if (node.c) {
+        node.c = undefined;
+      }
+      if (prism.languages[lang]) {
+        code.children = new Parser(this.vm).parse(
+          // 加一层 pre 保留空白符
+          "<pre>" +
+            prism
+              .highlight(text, prism.languages[lang], lang)
+              .replace(/token /g, "hl-") +
+            "</pre>"
+        )[0].children;
+      }
+      node.attrs.class = "hl-pre";
+      code.attrs.class = "hl-code";
+      code.attrs.style = "display:block;overflow: auto;";
+
+      if (config.showLanguageName) {
+        node.children.push({
+          name: "div",
+          attrs: {
+            class: "hl-language",
+            style:
+              "user-select:none;position:absolute;top:0;right:2px;font-size:10px;",
+          },
+          children: [
+            {
+              type: "text",
+              text: lang,
+            },
+          ],
+        });
+      }
+      if (config.copyByClickCode) {
+        node.attrs.style += (node.attrs.style || "") + ";user-select:none";
+        node.attrs["data-content"] = text;
+        node.children.push({
+          name: "div",
+          attrs: {
+            class: "hl-copy",
+            style:
+              "user-select:none;position:absolute;top:0;right:3px;font-size:10px;",
+          },
+          // children: [{
+          //   type: 'text',
+          //   text: '复制'
+          // }]
+        });
+        vm.expose();
+      }
+      if (config.showLineNumber) {
+        const line = text.split("\n").length;
+        const children = [];
+        for (let k = line; k--; ) {
+          children.push({
+            name: "span",
+            attrs: {
+              class: "span",
+            },
+          });
+        }
+        node.children.push({
+          name: "span",
+          attrs: {
+            class: "line-numbers-rows",
+          },
+          children,
+        });
+      }
+    }
+  }
+};
+
+export default Highlight;

uni_modules/zero-markdown-view/components/mp-html/latex/index.js

@@ -0,0 +1,80 @@
+/**
+ * @fileoverview latex 插件
+ * katex.min.js来源 https://github.com/rojer95/katex-mini
+ */
+import parse from './katex.min'
+
+function Latex () {
+
+}
+
+Latex.prototype.onParse = function (node, vm) {
+  // $...$包裹的内容为latex公式
+  if (!vm.options.editable && node.type === 'text' && node.text.includes('$')) {
+    const part = node.text.split(/(\${1,2})/)
+    const children = []
+    let status = 0
+    for (let i = 0; i < part.length; i++) {
+      if (i % 2 === 0) {
+        // 文本内容
+        if (part[i]) {
+          if (status === 0) {
+            children.push({
+              type: 'text',
+              text: part[i]
+            })
+          } else {
+            if (status === 1) {
+              // 行内公式
+              const nodes = parse.default(part[i])
+              children.push({
+                name: 'span',
+                attrs: {},
+                l: 'T',
+                f: 'display:inline-block',
+                children: nodes
+              })
+            } else {
+              // 块公式
+              const nodes = parse.default(part[i], {
+                displayMode: true
+              })
+              children.push({
+                name: 'div',
+                attrs: {
+                  style: 'text-align:center'
+                },
+                children: nodes
+              })
+            }
+          }
+        }
+      } else {
+        // 分隔符
+        if (part[i] === '$' && part[i + 2] === '$') {
+          // 行内公式
+          status = 1
+          part[i + 2] = ''
+        } else if (part[i] === '$$' && part[i + 2] === '$$') {
+          // 块公式
+          status = 2
+          part[i + 2] = ''
+        } else {
+          if (part[i] && part[i] !== '$$') {
+            // 普通$符号
+            part[i + 1] = part[i] + part[i + 1]
+          }
+          // 重置状态
+          status = 0
+        }
+      }
+    }
+    delete node.type
+    delete node.text
+    node.name = 'span'
+    node.attrs = {}
+    node.children = children
+  }
+}
+
+export default Latex

uni_modules/zero-markdown-view/components/mp-html/markdown/index.js

@@ -0,0 +1,34 @@
+/**
+ * @fileoverview markdown 插件
+ * Include marked (https://github.com/markedjs/marked)
+ * Include github-markdown-css (https://github.com/sindresorhus/github-markdown-css)
+ */
+import marked from './marked.min'
+let index = 0
+
+function Markdown (vm) {
+  this.vm = vm
+  vm._ids = {}
+}
+
+Markdown.prototype.onUpdate = function (content) {
+  if (this.vm.markdown) {
+    return marked(content)
+  }
+}
+
+Markdown.prototype.onParse = function (node, vm) {
+  if (vm.options.markdown) {
+    // 中文 id 需要转换，否则无法跳转
+    if (vm.options.useAnchor && node.attrs && /[\u4e00-\u9fa5]/.test(node.attrs.id)) {
+      const id = 't' + index++
+      this.vm._ids[node.attrs.id] = id
+      node.attrs.id = id
+    }
+    if (node.name === 'p' || node.name === 'table' || node.name === 'tr' || node.name === 'th' || node.name === 'td' || node.name === 'blockquote' || node.name === 'pre' || node.name === 'code') {
+      node.attrs.class = `md-${node.name} ${node.attrs.class || ''}`
+    }
+  }
+}
+
+export default Markdown

uni_modules/zero-markdown-view/components/mp-html/mp-html.vue

@@ -0,0 +1,504 @@
+<template>
+  <view id="_root" :class="(selectable?'_select ':'')+'_root'" :style="containerStyle">
+    <slot v-if="!nodes[0]" />
+    <!-- #ifndef APP-PLUS-NVUE -->
+    <node v-else :childs="nodes" :opts="[lazyLoad,loadingImg,errorImg,showImgMenu,selectable]" name="span" />
+    <!-- #endif -->
+    <!-- #ifdef APP-PLUS-NVUE -->
+    <web-view ref="web" src="/static/app-plus/mp-html/local.html" :style="'margin-top:-2px;height:' + height + 'px'" @onPostMessage="_onMessage" />
+    <!-- #endif -->
+  </view>
+</template>
+
+<script>
+/**
+ * mp-html v2.5.1
+ * @description 富文本组件
+ * @tutorial https://github.com/jin-yufeng/mp-html
+ * @property {String} container-style 容器的样式
+ * @property {String} content 用于渲染的 html 字符串
+ * @property {Boolean} copy-link 是否允许外部链接被点击时自动复制
+ * @property {String} domain 主域名，用于拼接链接
+ * @property {String} error-img 图片出错时的占位图链接
+ * @property {Boolean} lazy-load 是否开启图片懒加载
+ * @property {string} loading-img 图片加载过程中的占位图链接
+ * @property {Boolean} pause-video 是否在播放一个视频时自动暂停其他视频
+ * @property {Boolean} preview-img 是否允许图片被点击时自动预览
+ * @property {Boolean} scroll-table 是否给每个表格添加一个滚动层使其能单独横向滚动
+ * @property {Boolean | String} selectable 是否开启长按复制
+ * @property {Boolean} set-title 是否将 title 标签的内容设置到页面标题
+ * @property {Boolean} show-img-menu 是否允许图片被长按时显示菜单
+ * @property {Object} tag-style 标签的默认样式
+ * @property {Boolean | Number} use-anchor 是否使用锚点链接
+ * @event {Function} load dom 结构加载完毕时触发
+ * @event {Function} ready 所有图片加载完毕时触发
+ * @event {Function} imgtap 图片被点击时触发
+ * @event {Function} linktap 链接被点击时触发
+ * @event {Function} play 音视频播放时触发
+ * @event {Function} error 媒体加载出错时触发
+ */
+// #ifndef APP-PLUS-NVUE
+import node from './node/node'
+// #endif
+import Parser from './parser'
+import markdown from './markdown/index.js'
+import highlight from './highlight/index.js'
+import latex from './latex/index.js'
+import style from './style/index.js'
+const plugins=[markdown,highlight,latex,style,]
+// #ifdef APP-PLUS-NVUE
+const dom = weex.requireModule('dom')
+// #endif
+export default {
+  name: 'mp-html',
+  data () {
+    return {
+      nodes: [],
+      // #ifdef APP-PLUS-NVUE
+      height: 3
+      // #endif
+    }
+  },
+  props: {
+    markdown: Boolean,
+    containerStyle: {
+      type: String,
+      default: ''
+    },
+    content: {
+      type: String,
+      default: ''
+    },
+    copyLink: {
+      type: [Boolean, String],
+      default: true
+    },
+    domain: String,
+    errorImg: {
+      type: String,
+      default: ''
+    },
+    lazyLoad: {
+      type: [Boolean, String],
+      default: false
+    },
+    loadingImg: {
+      type: String,
+      default: ''
+    },
+    pauseVideo: {
+      type: [Boolean, String],
+      default: true
+    },
+    previewImg: {
+      type: [Boolean, String],
+      default: true
+    },
+    scrollTable: [Boolean, String],
+    selectable: [Boolean, String],
+    setTitle: {
+      type: [Boolean, String],
+      default: true
+    },
+    showImgMenu: {
+      type: [Boolean, String],
+      default: true
+    },
+    tagStyle: Object,
+    useAnchor: [Boolean, Number]
+  },
+  // #ifdef VUE3
+  emits: ['load', 'ready', 'imgtap', 'linktap', 'play', 'error'],
+  // #endif
+  // #ifndef APP-PLUS-NVUE
+  components: {
+    node
+  },
+  // #endif
+  watch: {
+    content (content) {
+      this.setContent(content)
+    }
+  },
+  created () {
+    this.plugins = []
+    for (let i = plugins.length; i--;) {
+      this.plugins.push(new plugins[i](this))
+    }
+  },
+  mounted () {
+    if (this.content && !this.nodes.length) {
+      this.setContent(this.content)
+    }
+  },
+  beforeDestroy () {
+    this._hook('onDetached')
+  },
+  methods: {
+    /**
+     * @description 将锚点跳转的范围限定在一个 scroll-view 内
+     * @param {Object} page scroll-view 所在页面的示例
+     * @param {String} selector scroll-view 的选择器
+     * @param {String} scrollTop scroll-view scroll-top 属性绑定的变量名
+     */
+    in (page, selector, scrollTop) {
+      // #ifndef APP-PLUS-NVUE
+      if (page && selector && scrollTop) {
+        this._in = {
+          page,
+          selector,
+          scrollTop
+        }
+      }
+      // #endif
+    },
+
+    /**
+     * @description 锚点跳转
+     * @param {String} id 要跳转的锚点 id
+     * @param {Number} offset 跳转位置的偏移量
+     * @returns {Promise}
+     */
+    navigateTo (id, offset) {
+      id = this._ids[decodeURI(id)] || id
+      return new Promise((resolve, reject) => {
+        if (!this.useAnchor) {
+          reject(Error('Anchor is disabled'))
+          return
+        }
+        offset = offset || parseInt(this.useAnchor) || 0
+        // #ifdef APP-PLUS-NVUE
+        if (!id) {
+          dom.scrollToElement(this.$refs.web, {
+            offset
+          })
+          resolve()
+        } else {
+          this._navigateTo = {
+            resolve,
+            reject,
+            offset
+          }
+          this.$refs.web.evalJs('uni.postMessage({data:{action:"getOffset",offset:(document.getElementById(' + id + ')||{}).offsetTop}})')
+        }
+        // #endif
+        // #ifndef APP-PLUS-NVUE
+        let deep = ' '
+        // #ifdef MP-WEIXIN || MP-QQ || MP-TOUTIAO
+        deep = '>>>'
+        // #endif
+        const selector = uni.createSelectorQuery()
+          // #ifndef MP-ALIPAY
+          .in(this._in ? this._in.page : this)
+          // #endif
+          .select((this._in ? this._in.selector : '._root') + (id ? `${deep}#${id}` : '')).boundingClientRect()
+        if (this._in) {
+          selector.select(this._in.selector).scrollOffset()
+            .select(this._in.selector).boundingClientRect()
+        } else {
+          // 获取 scroll-view 的位置和滚动距离
+          selector.selectViewport().scrollOffset() // 获取窗口的滚动距离
+        }
+        selector.exec(res => {
+          if (!res[0]) {
+            reject(Error('Label not found'))
+            return
+          }
+          const scrollTop = res[1].scrollTop + res[0].top - (res[2] ? res[2].top : 0) + offset
+          if (this._in) {
+            // scroll-view 跳转
+            this._in.page[this._in.scrollTop] = scrollTop
+          } else {
+            // 页面跳转
+            uni.pageScrollTo({
+              scrollTop,
+              duration: 300
+            })
+          }
+          resolve()
+        })
+        // #endif
+      })
+    },
+
+    /**
+     * @description 获取文本内容
+     * @return {String}
+     */
+    getText (nodes) {
+      let text = '';
+      (function traversal (nodes) {
+        for (let i = 0; i < nodes.length; i++) {
+          const node = nodes[i]
+          if (node.type === 'text') {
+            text += node.text.replace(/&amp;/g, '&')
+          } else if (node.name === 'br') {
+            text += '\n'
+          } else {
+            // 块级标签前后加换行
+            const isBlock = node.name === 'p' || node.name === 'div' || node.name === 'tr' || node.name === 'li' || (node.name[0] === 'h' && node.name[1] > '0' && node.name[1] < '7')
+            if (isBlock && text && text[text.length - 1] !== '\n') {
+              text += '\n'
+            }
+            // 递归获取子节点的文本
+            if (node.children) {
+              traversal(node.children)
+            }
+            if (isBlock && text[text.length - 1] !== '\n') {
+              text += '\n'
+            } else if (node.name === 'td' || node.name === 'th') {
+              text += '\t'
+            }
+          }
+        }
+      })(nodes || this.nodes)
+      return text
+    },
+
+    /**
+     * @description 获取内容大小和位置
+     * @return {Promise}
+     */
+    getRect () {
+      return new Promise((resolve, reject) => {
+        uni.createSelectorQuery()
+          // #ifndef MP-ALIPAY
+          .in(this)
+          // #endif
+          .select('#_root').boundingClientRect().exec(res => res[0] ? resolve(res[0]) : reject(Error('Root label not found')))
+      })
+    },
+
+    /**
+     * @description 暂停播放媒体
+     */
+    pauseMedia () {
+      for (let i = (this._videos || []).length; i--;) {
+        this._videos[i].pause()
+      }
+      // #ifdef APP-PLUS
+      const command = 'for(var e=document.getElementsByTagName("video"),i=e.length;i--;)e[i].pause()'
+      // #ifndef APP-PLUS-NVUE
+      let page = this.$parent
+      while (!page.$scope) page = page.$parent
+      page.$scope.$getAppWebview().evalJS(command)
+      // #endif
+      // #ifdef APP-PLUS-NVUE
+      this.$refs.web.evalJs(command)
+      // #endif
+      // #endif
+    },
+
+    /**
+     * @description 设置媒体播放速率
+     * @param {Number} rate 播放速率
+     */
+    setPlaybackRate (rate) {
+      this.playbackRate = rate
+      for (let i = (this._videos || []).length; i--;) {
+        this._videos[i].playbackRate(rate)
+      }
+      // #ifdef APP-PLUS
+      const command = 'for(var e=document.getElementsByTagName("video"),i=e.length;i--;)e[i].playbackRate=' + rate
+      // #ifndef APP-PLUS-NVUE
+      let page = this.$parent
+      while (!page.$scope) page = page.$parent
+      page.$scope.$getAppWebview().evalJS(command)
+      // #endif
+      // #ifdef APP-PLUS-NVUE
+      this.$refs.web.evalJs(command)
+      // #endif
+      // #endif
+    },
+
+    /**
+     * @description 设置内容
+     * @param {String} content html 内容
+     * @param {Boolean} append 是否在尾部追加
+     */
+    setContent (content, append) {
+      if (!append || !this.imgList) {
+        this.imgList = []
+      }
+      const nodes = new Parser(this).parse(content)
+      // #ifdef APP-PLUS-NVUE
+      if (this._ready) {
+        this._set(nodes, append)
+      }
+      // #endif
+      this.$set(this, 'nodes', append ? (this.nodes || []).concat(nodes) : nodes)
+
+      // #ifndef APP-PLUS-NVUE
+      this._videos = []
+      this.$nextTick(() => {
+        this._hook('onLoad')
+        this.$emit('load')
+      })
+
+      if (this.lazyLoad || this.imgList._unloadimgs < this.imgList.length / 2) {
+        // 设置懒加载，每 350ms 获取高度，不变则认为加载完毕
+        let height = 0
+        const callback = rect => {
+          if (!rect || !rect.height) rect = {}
+          // 350ms 总高度无变化就触发 ready 事件
+          if (rect.height === height) {
+            this.$emit('ready', rect)
+          } else {
+            height = rect.height
+            setTimeout(() => {
+              this.getRect().then(callback).catch(callback)
+            }, 350)
+          }
+        }
+        this.getRect().then(callback).catch(callback)
+      } else {
+        // 未设置懒加载，等待所有图片加载完毕
+        if (!this.imgList._unloadimgs) {
+          this.getRect().then(rect => {
+            this.$emit('ready', rect)
+          }).catch(() => {
+            this.$emit('ready', {})
+          })
+        }
+      }
+      // #endif
+    },
+
+    /**
+     * @description 调用插件钩子函数
+     */
+    _hook (name) {
+      for (let i = plugins.length; i--;) {
+        if (this.plugins[i][name]) {
+          this.plugins[i][name]()
+        }
+      }
+    },
+
+    // #ifdef APP-PLUS-NVUE
+    /**
+     * @description 设置内容
+     */
+    _set (nodes, append) {
+      this.$refs.web.evalJs('setContent(' + JSON.stringify(nodes).replace(/%22/g, '') + ',' + JSON.stringify([this.containerStyle.replace(/(?:margin|padding)[^;]+/g, ''), this.errorImg, this.loadingImg, this.pauseVideo, this.scrollTable, this.selectable]) + ',' + append + ')')
+    },
+
+    /**
+     * @description 接收到 web-view 消息
+     */
+    _onMessage (e) {
+      const message = e.detail.data[0]
+      switch (message.action) {
+        // web-view 初始化完毕
+        case 'onJSBridgeReady':
+          this._ready = true
+          if (this.nodes) {
+            this._set(this.nodes)
+          }
+          break
+        // 内容 dom 加载完毕
+        case 'onLoad':
+          this.height = message.height
+          this._hook('onLoad')
+          this.$emit('load')
+          break
+        // 所有图片加载完毕
+        case 'onReady':
+          this.getRect().then(res => {
+            this.$emit('ready', res)
+          }).catch(() => {
+            this.$emit('ready', {})
+          })
+          break
+        // 总高度发生变化
+        case 'onHeightChange':
+          this.height = message.height
+          break
+        // 图片点击
+        case 'onImgTap':
+          this.$emit('imgtap', message.attrs)
+          if (this.previewImg) {
+            uni.previewImage({
+              current: parseInt(message.attrs.i),
+              urls: this.imgList
+            })
+          }
+          break
+        // 链接点击
+        case 'onLinkTap': {
+          const href = message.attrs.href
+          this.$emit('linktap', message.attrs)
+          if (href) {
+            // 锚点跳转
+            if (href[0] === '#') {
+              if (this.useAnchor) {
+                dom.scrollToElement(this.$refs.web, {
+                  offset: message.offset
+                })
+              }
+            } else if (href.includes('://')) {
+              // 打开外链
+              if (this.copyLink) {
+                plus.runtime.openWeb(href)
+              }
+            } else {
+              uni.navigateTo({
+                url: href,
+                fail () {
+                  uni.switchTab({
+                    url: href
+                  })
+                }
+              })
+            }
+          }
+          break
+        }
+        case 'onPlay':
+          this.$emit('play')
+          break
+        // 获取到锚点的偏移量
+        case 'getOffset':
+          if (typeof message.offset === 'number') {
+            dom.scrollToElement(this.$refs.web, {
+              offset: message.offset + this._navigateTo.offset
+            })
+            this._navigateTo.resolve()
+          } else {
+            this._navigateTo.reject(Error('Label not found'))
+          }
+          break
+        // 点击
+        case 'onClick':
+          this.$emit('tap')
+          this.$emit('click')
+          break
+        // 出错
+        case 'onError':
+          this.$emit('error', {
+            source: message.source,
+            attrs: message.attrs
+          })
+      }
+    }
+    // #endif
+  }
+}
+</script>
+
+<style>
+/* #ifndef APP-PLUS-NVUE */
+/* 根节点样式 */
+._root {
+  padding: 1px 0;
+  overflow-x: auto;
+  overflow-y: hidden;
+  -webkit-overflow-scrolling: touch;
+}
+
+/* 长按复制 */
+._select {
+  user-select: text;
+}
+/* #endif */
+</style>

uni_modules/zero-markdown-view/components/mp-html/style/index.js

@@ -0,0 +1,129 @@
+/**
+ * @fileoverview style 插件
+ */
+// #ifndef APP-PLUS-NVUE
+import Parser from './parser'
+// #endif
+
+function Style () {
+  this.styles = []
+}
+
+// #ifndef APP-PLUS-NVUE
+Style.prototype.onParse = function (node, vm) {
+  // 获取样式
+  if (node.name === 'style' && node.children.length && node.children[0].type === 'text') {
+    this.styles = this.styles.concat(new Parser().parse(node.children[0].text))
+  } else if (node.name) {
+    // 匹配样式（对非文本标签）
+    // 存储不同优先级的样式 name < class < id < 后代
+    let matched = ['', '', '', '']
+    for (let i = 0, len = this.styles.length; i < len; i++) {
+      const item = this.styles[i]
+      let res = match(node, item.key || item.list[item.list.length - 1])
+      let j
+      if (res) {
+        // 后代选择器
+        if (!item.key) {
+          j = item.list.length - 2
+          for (let k = vm.stack.length; j >= 0 && k--;) {
+            // 子选择器
+            if (item.list[j] === '>') {
+              // 错误情况
+              if (j < 1 || j > item.list.length - 2) break
+              if (match(vm.stack[k], item.list[j - 1])) {
+                j -= 2
+              } else {
+                j++
+              }
+            } else if (match(vm.stack[k], item.list[j])) {
+              j--
+            }
+          }
+          res = 4
+        }
+        if (item.key || j < 0) {
+          // 添加伪类
+          if (item.pseudo && node.children) {
+            let text
+            item.style = item.style.replace(/content:([^;]+)/, (_, $1) => {
+              text = $1.replace(/['"]/g, '')
+                // 处理 attr 函数
+                .replace(/attr\((.+?)\)/, (_, $1) => node.attrs[$1.trim()] || '')
+                // 编码 \xxx
+                .replace(/\\(\w{4})/, (_, $1) => String.fromCharCode(parseInt($1, 16)))
+              return ''
+            })
+            const pseudo = {
+              name: 'span',
+              attrs: {
+                style: item.style
+              },
+              children: [{
+                type: 'text',
+                text
+              }]
+            }
+            if (item.pseudo === 'before') {
+              node.children.unshift(pseudo)
+            } else {
+              node.children.push(pseudo)
+            }
+          } else {
+            matched[res - 1] += item.style + (item.style[item.style.length - 1] === ';' ? '' : ';')
+          }
+        }
+      }
+    }
+    matched = matched.join('')
+    if (matched.length > 2) {
+      node.attrs.style = matched + (node.attrs.style || '')
+    }
+  }
+}
+
+/**
+ * @description 匹配样式
+ * @param {object} node 要匹配的标签
+ * @param {string|string[]} keys 选择器
+ * @returns {number} 0：不匹配；1：name 匹配；2：class 匹配；3：id 匹配
+ */
+function match (node, keys) {
+  function matchItem (key) {
+    if (key[0] === '#') {
+      // 匹配 id
+      if (node.attrs.id && node.attrs.id.trim() === key.substr(1)) return 3
+    } else if (key[0] === '.') {
+      // 匹配 class
+      key = key.substr(1)
+      const selectors = (node.attrs.class || '').split(' ')
+      for (let i = 0; i < selectors.length; i++) {
+        if (selectors[i].trim() === key) return 2
+      }
+    } else if (node.name === key) {
+      // 匹配 name
+      return 1
+    }
+    return 0
+  }
+
+  // 多选择器交集
+  if (keys instanceof Array) {
+    let res = 0
+    for (let j = 0; j < keys.length; j++) {
+      const tmp = matchItem(keys[j])
+      // 任意一个不匹配就失败
+      if (!tmp) return 0
+      // 优先级最大的一个作为最终优先级
+      if (tmp > res) {
+        res = tmp
+      }
+    }
+    return res
+  }
+
+  return matchItem(keys)
+}
+// #endif
+
+export default Style

uni_modules/zero-markdown-view/components/mp-html/style/parser.js

@@ -0,0 +1,175 @@
+const blank = {
+  ' ': true,
+  '\n': true,
+  '\t': true,
+  '\r': true,
+  '\f': true
+}
+
+function Parser () {
+  this.styles = []
+  this.selectors = []
+}
+
+/**
+ * @description 解析 css 字符串
+ * @param {string} content css 内容
+ */
+Parser.prototype.parse = function (content) {
+  new Lexer(this).parse(content)
+  return this.styles
+}
+
+/**
+ * @description 解析到一个选择器
+ * @param {string} name 名称
+ */
+Parser.prototype.onSelector = function (name) {
+  // 不支持的选择器
+  if (name.includes('[') || name.includes('*') || name.includes('@')) return
+  const selector = {}
+  // 伪类
+  if (name.includes(':')) {
+    const info = name.split(':')
+    const pseudo = info.pop()
+    if (pseudo === 'before' || pseudo === 'after') {
+      selector.pseudo = pseudo
+      name = info[0]
+    } else return
+  }
+
+  // 分割交集选择器
+  function splitItem (str) {
+    const arr = []
+    let i, start
+    for (i = 1, start = 0; i < str.length; i++) {
+      if (str[i] === '.' || str[i] === '#') {
+        arr.push(str.substring(start, i))
+        start = i
+      }
+    }
+    if (!arr.length) {
+      return str
+    } else {
+      arr.push(str.substring(start, i))
+      return arr
+    }
+  }
+
+  // 后代选择器
+  if (name.includes(' ')) {
+    selector.list = []
+    const list = name.split(' ')
+    for (let i = 0; i < list.length; i++) {
+      if (list[i].length) {
+        // 拆分子选择器
+        const arr = list[i].split('>')
+        for (let j = 0; j < arr.length; j++) {
+          selector.list.push(splitItem(arr[j]))
+          if (j < arr.length - 1) {
+            selector.list.push('>')
+          }
+        }
+      }
+    }
+  } else {
+    selector.key = splitItem(name)
+  }
+
+  this.selectors.push(selector)
+}
+
+/**
+ * @description 解析到选择器内容
+ * @param {string} content 内容
+ */
+Parser.prototype.onContent = function (content) {
+  // 并集选择器
+  for (let i = 0; i < this.selectors.length; i++) {
+    this.selectors[i].style = content
+  }
+  this.styles = this.styles.concat(this.selectors)
+  this.selectors = []
+}
+
+/**
+ * @description css 词法分析器
+ * @param {object} handler 高层处理器
+ */
+function Lexer (handler) {
+  this.selector = ''
+  this.style = ''
+  this.handler = handler
+}
+
+Lexer.prototype.parse = function (content) {
+  this.i = 0
+  this.content = content
+  this.state = this.blank
+  for (let len = content.length; this.i < len; this.i++) {
+    this.state(content[this.i])
+  }
+}
+
+Lexer.prototype.comment = function () {
+  this.i = this.content.indexOf('*/', this.i) + 1
+  if (!this.i) {
+    this.i = this.content.length
+  }
+}
+
+Lexer.prototype.blank = function (c) {
+  if (!blank[c]) {
+    if (c === '/' && this.content[this.i + 1] === '*') {
+      this.comment()
+      return
+    }
+    this.selector += c
+    this.state = this.name
+  }
+}
+
+Lexer.prototype.name = function (c) {
+  if (c === '/' && this.content[this.i + 1] === '*') {
+    this.comment()
+    return
+  }
+  if (c === '{' || c === ',' || c === ';') {
+    this.handler.onSelector(this.selector.trimEnd())
+    this.selector = ''
+    if (c !== '{') {
+      while (blank[this.content[++this.i]]);
+    }
+    if (this.content[this.i] === '{') {
+      this.floor = 1
+      this.state = this.val
+    } else {
+      this.selector += this.content[this.i]
+    }
+  } else if (blank[c]) {
+    this.selector += ' '
+  } else {
+    this.selector += c
+  }
+}
+
+Lexer.prototype.val = function (c) {
+  if (c === '/' && this.content[this.i + 1] === '*') {
+    this.comment()
+    return
+  }
+  if (c === '{') {
+    this.floor++
+  } else if (c === '}') {
+    this.floor--
+    if (!this.floor) {
+      this.handler.onContent(this.style)
+      this.style = ''
+      this.state = this.blank
+      return
+    }
+  }
+  this.style += c
+}
+
+export default Parser