|
|
@@ -0,0 +1,1260 @@
|
|
|
+/**
|
|
|
+ * @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'),
|
|
|
+
|
|
|
+ // #ifdef (MP-WEIXIN || MP-QQ || APP-PLUS || MP-360) && VUE3
|
|
|
+ // 行内标签
|
|
|
+ inlineTags: makeMap('abbr,b,big,code,del,em,i,ins,label,q,small,span,strong,sub,sup'),
|
|
|
+ // #endif
|
|
|
+
|
|
|
+ // 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',
|
|
|
+ strike: 'text-decoration:line-through',
|
|
|
+ u: 'text-decoration:underline'
|
|
|
+ // #endif
|
|
|
+ },
|
|
|
+
|
|
|
+ // svg 大小写对照表
|
|
|
+ svgDict: {
|
|
|
+ animatetransform: 'animateTransform',
|
|
|
+ lineargradient: 'linearGradient',
|
|
|
+ viewbox: 'viewBox',
|
|
|
+ attributename: 'attributeName',
|
|
|
+ repeatcount: 'repeatCount',
|
|
|
+ repeatdur: 'repeatDur'
|
|
|
+ }
|
|
|
+}
|
|
|
+const tagSelector={}
|
|
|
+const {
|
|
|
+ windowWidth,
|
|
|
+ // #ifdef MP-WEIXIN
|
|
|
+ system
|
|
|
+ // #endif
|
|
|
+} = uni.getSystemInfoSync()
|
|
|
+const blankChar = makeMap(' ,\r,\n,\t,\f')
|
|
|
+let idIndex = 0
|
|
|
+
|
|
|
+// #ifdef H5 || APP-PLUS
|
|
|
+config.ignoreTags.iframe = undefined
|
|
|
+config.trustTags.iframe = true
|
|
|
+config.ignoreTags.embed = undefined
|
|
|
+config.trustTags.embed = true
|
|
|
+// #endif
|
|
|
+// #ifdef APP-PLUS-NVUE
|
|
|
+config.ignoreTags.source = undefined
|
|
|
+config.ignoreTags.style = undefined
|
|
|
+// #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 &
|
|
|
+ * @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
|
|
|
+ if (j === -1) break
|
|
|
+ if (str[i + 1] === '#') {
|
|
|
+ // { 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 {
|
|
|
+ // 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
|
|
|
+ */
|
|
|
+function Parser (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 = []
|
|
|
+ this.pre = (this.options.containerStyle || '').includes('white-space') && this.options.containerStyle.includes('pre') ? 2 : 0
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * @description 执行解析
|
|
|
+ * @param {String} content 要解析的文本
|
|
|
+ */
|
|
|
+Parser.prototype.parse = function (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）
|
|
|
+ */
|
|
|
+Parser.prototype.expose = function () {
|
|
|
+ // #ifndef APP-PLUS-NVUE
|
|
|
+ for (let i = this.stack.length; i--;) {
|
|
|
+ const item = this.stack[i]
|
|
|
+ if (item.c || item.name === 'a' || item.name === 'video' || item.name === 'audio') 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
|
|
|
+ */
|
|
|
+Parser.prototype.hook = function (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
|
|
|
+ */
|
|
|
+Parser.prototype.getUrl = function (url) {
|
|
|
+ const domain = this.options.domain
|
|
|
+ if (url[0] === '/') {
|
|
|
+ if (url[1] === '/') {
|
|
|
+ // // 开头的补充协议名
|
|
|
+ url = (domain ? domain.split('://')[0] : 'http') + ':' + url
|
|
|
+ } else if (domain) {
|
|
|
+ // 否则补充整个域名
|
|
|
+ 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}
|
|
|
+ */
|
|
|
+Parser.prototype.parseStyle = function (node) {
|
|
|
+ const attrs = node.attrs
|
|
|
+ const list = (this.tagStyle[node.name] || '').split(';').concat((attrs.style || '').split(';'))
|
|
|
+ const styleObj = {}
|
|
|
+ let tmp = ''
|
|
|
+
|
|
|
+ if (attrs.id && !this.xml) {
|
|
|
+ // 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 = undefined
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ // 转换 width 和 height 属性
|
|
|
+ if (attrs.width) {
|
|
|
+ styleObj.width = parseFloat(attrs.width) + (attrs.width.includes('%') ? '%' : 'px')
|
|
|
+ attrs.width = undefined
|
|
|
+ }
|
|
|
+ if (attrs.height) {
|
|
|
+ styleObj.height = parseFloat(attrs.height) + (attrs.height.includes('%') ? '%' : 'px')
|
|
|
+ attrs.height = undefined
|
|
|
+ }
|
|
|
+
|
|
|
+ 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()
|
|
|
+ if ((value[0] === '-' && value.lastIndexOf('-') > 0) || value.includes('safe')) {
|
|
|
+ // 兼容性的 css 不压缩
|
|
|
+ tmp += `;${key}:${value}`
|
|
|
+ } else if (!styleObj[key] || value.includes('import') || !styleObj[key].includes('import')) {
|
|
|
+ // 重复的样式进行覆盖
|
|
|
+ if (value.includes('url')) {
|
|
|
+ // 填充链接
|
|
|
+ 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))
|
|
|
+ }
|
|
|
+ } else if (value.includes('rpx')) {
|
|
|
+ // 转换 rpx（rich-text 内部不支持 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
|
|
|
+ */
|
|
|
+Parser.prototype.onTagName = function (name) {
|
|
|
+ this.tagName = this.xml ? name : name.toLowerCase()
|
|
|
+ if (this.tagName === 'svg') {
|
|
|
+ this.xml = (this.xml || 0) + 1 // svg 标签内大小写敏感
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * @description 解析到属性名
|
|
|
+ * @param {String} name 属性名
|
|
|
+ * @private
|
|
|
+ */
|
|
|
+Parser.prototype.onAttrName = function (name) {
|
|
|
+ name = this.xml ? name : name.toLowerCase()
|
|
|
+ if (name.substr(0, 5) === 'data-') {
|
|
|
+ if (name === 'data-src' && !this.attrs.src) {
|
|
|
+ // data-src 自动转为 src
|
|
|
+ this.attrName = 'src'
|
|
|
+ } else if (this.tagName === 'img' || this.tagName === 'a') {
|
|
|
+ // a 和 img 标签保留 data- 的属性，可以在 imgtap 和 linktap 事件中使用
|
|
|
+ this.attrName = name
|
|
|
+ } else {
|
|
|
+ // 剩余的移除以减小大小
|
|
|
+ this.attrName = undefined
|
|
|
+ }
|
|
|
+ } 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
|
|
|
+ */
|
|
|
+Parser.prototype.onAttrVal = function (val) {
|
|
|
+ const name = this.attrName || ''
|
|
|
+ if (name === 'style' || name === 'href') {
|
|
|
+ // 部分属性进行实体解码
|
|
|
+ this.attrs[name] = decodeEntity(val, true)
|
|
|
+ } else if (name.includes('src')) {
|
|
|
+ // 拼接主域名
|
|
|
+ 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
|
|
|
+ */
|
|
|
+Parser.prototype.onOpenTag = function (selfClose) {
|
|
|
+ // 拼装 node
|
|
|
+ const node = Object.create(null)
|
|
|
+ node.name = this.tagName
|
|
|
+ node.attrs = this.attrs
|
|
|
+ // 避免因为自动 diff 使得 type 被设置为 null 导致部分内容不显示
|
|
|
+ if (this.options.nodes.length) {
|
|
|
+ node.type = 'node'
|
|
|
+ }
|
|
|
+ this.attrs = Object.create(null)
|
|
|
+
|
|
|
+ const attrs = node.attrs
|
|
|
+ const parent = this.stack[this.stack.length - 1]
|
|
|
+ const siblings = parent ? parent.children : this.nodes
|
|
|
+ const close = this.xml ? selfClose : config.voidTags[node.name]
|
|
|
+
|
|
|
+ // 替换标签名选择器
|
|
|
+ if (tagSelector[node.name]) {
|
|
|
+ attrs.class = tagSelector[node.name] + (attrs.class ? ' ' + attrs.class : '')
|
|
|
+ }
|
|
|
+
|
|
|
+ // 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 = undefined
|
|
|
+ }
|
|
|
+ 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 */ else if (node.name === 'source' && parent && (parent.name === 'video' || parent.name === 'audio') && attrs.src) {
|
|
|
+ // 设置 source 标签（仅父节点为 video 或 audio 时有效）
|
|
|
+ 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 = undefined
|
|
|
+ }
|
|
|
+ // #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 = undefined
|
|
|
+ }
|
|
|
+ // 记录是否设置了宽高
|
|
|
+ if (styleObj.width) {
|
|
|
+ if (styleObj.width.includes('auto')) {
|
|
|
+ styleObj.width = ''
|
|
|
+ } else {
|
|
|
+ node.w = 'T'
|
|
|
+ if (!isNaN(parseInt(styleObj.height)) && (!styleObj.height.includes('%') || (parent && (parent.attrs.style || '').includes('height')))) {
|
|
|
+ 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 += `;${key}:${styleObj[key].replace(' !important', '')}`
|
|
|
+ }
|
|
|
+ }
|
|
|
+ attrs.style = attrs.style.substr(1) || undefined
|
|
|
+ } else {
|
|
|
+ if ((node.name === 'pre' || ((attrs.style || '').includes('white-space') && attrs.style.includes('pre'))) && this.pre !== 2) {
|
|
|
+ this.pre = node.pre = 1
|
|
|
+ }
|
|
|
+ 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
|
|
|
+ */
|
|
|
+Parser.prototype.onCloseTag = function (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: {
|
|
|
+ class: tagSelector[name],
|
|
|
+ style: this.tagStyle[name]
|
|
|
+ }
|
|
|
+ })
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * @description 处理标签出栈
|
|
|
+ * @private
|
|
|
+ */
|
|
|
+Parser.prototype.popNode = function () {
|
|
|
+ const node = this.stack.pop()
|
|
|
+ let attrs = node.attrs
|
|
|
+ const children = node.children
|
|
|
+ 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 && this.pre !== 2) {
|
|
|
+ // 是否合并空白符标识
|
|
|
+ this.pre = node.pre = undefined
|
|
|
+ for (let i = this.stack.length; i--;) {
|
|
|
+ if (this.stack[i].pre) {
|
|
|
+ this.pre = 1
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ const styleObj = {}
|
|
|
+
|
|
|
+ // 转换 svg
|
|
|
+ if (node.name === 'svg') {
|
|
|
+ if (this.xml > 1) {
|
|
|
+ // 多层 svg 嵌套
|
|
|
+ this.xml--
|
|
|
+ return
|
|
|
+ }
|
|
|
+ // #ifdef APP-PLUS-NVUE
|
|
|
+ (function traversal (node) {
|
|
|
+ if (node.name) {
|
|
|
+ // 调整 svg 的大小写
|
|
|
+ node.name = config.svgDict[node.name] || node.name
|
|
|
+ for (const item in node.attrs) {
|
|
|
+ if (config.svgDict[item]) {
|
|
|
+ node.attrs[config.svgDict[item]] = node.attrs[item]
|
|
|
+ node.attrs[item] = undefined
|
|
|
+ }
|
|
|
+ }
|
|
|
+ for (let i = 0; i < (node.children || []).length; i++) {
|
|
|
+ traversal(node.children[i])
|
|
|
+ }
|
|
|
+ }
|
|
|
+ })(node)
|
|
|
+ // #endif
|
|
|
+ // #ifndef APP-PLUS-NVUE
|
|
|
+ let src = ''
|
|
|
+ const style = attrs.style
|
|
|
+ attrs.style = ''
|
|
|
+ attrs.xmlns = 'http://www.w3.org/2000/svg';
|
|
|
+ (function traversal (node) {
|
|
|
+ if (node.type === 'text') {
|
|
|
+ src += node.text
|
|
|
+ return
|
|
|
+ }
|
|
|
+ const name = config.svgDict[node.name] || node.name
|
|
|
+ src += '<' + name
|
|
|
+ for (const item in node.attrs) {
|
|
|
+ const val = node.attrs[item]
|
|
|
+ if (val) {
|
|
|
+ src += ` ${config.svgDict[item] || item}="${val}"`
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (!node.children) {
|
|
|
+ src += '/>'
|
|
|
+ } else {
|
|
|
+ src += '>'
|
|
|
+ for (let i = 0; i < node.children.length; i++) {
|
|
|
+ traversal(node.children[i])
|
|
|
+ }
|
|
|
+ src += '</' + name + '>'
|
|
|
+ }
|
|
|
+ })(node)
|
|
|
+ node.name = 'img'
|
|
|
+ node.attrs = {
|
|
|
+ src: 'data:image/svg+xml;utf8,' + src.replace(/#/g, '%23'),
|
|
|
+ style,
|
|
|
+ ignore: 'T'
|
|
|
+ }
|
|
|
+ node.children = undefined
|
|
|
+ // #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 = undefined
|
|
|
+ }
|
|
|
+
|
|
|
+ // 转换 dir 属性
|
|
|
+ if (attrs.dir) {
|
|
|
+ styleObj.direction = attrs.dir
|
|
|
+ attrs.dir = undefined
|
|
|
+ }
|
|
|
+
|
|
|
+ // 转换 font 标签的属性
|
|
|
+ if (node.name === 'font') {
|
|
|
+ if (attrs.color) {
|
|
|
+ styleObj.color = attrs.color
|
|
|
+ attrs.color = undefined
|
|
|
+ }
|
|
|
+ if (attrs.face) {
|
|
|
+ styleObj['font-family'] = attrs.face
|
|
|
+ attrs.face = undefined
|
|
|
+ }
|
|
|
+ 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'] = ['x-small', 'small', 'medium', 'large', 'x-large', 'xx-large', 'xxx-large'][size - 1]
|
|
|
+ }
|
|
|
+ attrs.size = undefined
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // #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 (node.name !== 'table' && 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'
|
|
|
+ } else if (!config.trustTags[node.name] && !this.xml) {
|
|
|
+ // 未知标签转为 span，避免无法显示
|
|
|
+ node.name = 'span'
|
|
|
+ }
|
|
|
+
|
|
|
+ if (node.name === 'a' || node.name === 'ad'
|
|
|
+ // #ifdef H5 || APP-PLUS
|
|
|
+ || node.name === 'iframe' // eslint-disable-line
|
|
|
+ // #endif
|
|
|
+ ) {
|
|
|
+ this.expose()
|
|
|
+ } /* #ifdef APP-PLUS */ else if (node.name === 'video') {
|
|
|
+ let str = '<video style="width:100%;height:100%"'
|
|
|
+ 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 i = 0; i < node.src.length; i++) {
|
|
|
+ str += '<source src="' + node.src[i] + '">'
|
|
|
+ }
|
|
|
+ str += '</video>'
|
|
|
+ node.html = str
|
|
|
+ } /* #endif */ else if ((node.name === 'ul' || node.name === 'ol') && node.c) {
|
|
|
+ // 列表处理
|
|
|
+ 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 = undefined
|
|
|
+ }
|
|
|
+ for (let i = children.length; i--;) {
|
|
|
+ if (children[i].name === 'li') {
|
|
|
+ children[i].c = 1
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else if (node.name === 'table') {
|
|
|
+ // 表格处理
|
|
|
+ // 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'
|
|
|
+ } else if (border) {
|
|
|
+ // 无间隔的情况下避免边框重叠
|
|
|
+ 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 i = 0; i < nodes.length; i++) {
|
|
|
+ if (nodes[i].name === 'tr') {
|
|
|
+ trList.push(nodes[i])
|
|
|
+ } else {
|
|
|
+ traversal(nodes[i].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 style = td.attrs.style || ''
|
|
|
+ const start = style.indexOf('width') ? style.indexOf(';width') : 0
|
|
|
+ // 提取出 td 的宽度
|
|
|
+ if (start !== -1) {
|
|
|
+ let end = style.indexOf(';', start + 6)
|
|
|
+ if (end === -1) {
|
|
|
+ end = style.length
|
|
|
+ }
|
|
|
+ if (!td.attrs.colspan) {
|
|
|
+ width[col] = style.substring(start ? start + 7 : 6, end)
|
|
|
+ }
|
|
|
+ style = style.substr(0, start) + style.substr(end)
|
|
|
+ }
|
|
|
+ style += (border ? `;border:${border}px solid gray` + (spacing ? '' : ';border-right:0;border-bottom:0') : '') + (padding ? `;padding:${padding}px` : '')
|
|
|
+ // 处理列合并
|
|
|
+ if (td.attrs.colspan) {
|
|
|
+ style += `;grid-column-start:${col};grid-column-end:${col + parseInt(td.attrs.colspan)}`
|
|
|
+ if (!td.attrs.rowspan) {
|
|
|
+ style += `;grid-row-start:${row};grid-row-end:${row + 1}`
|
|
|
+ }
|
|
|
+ col += parseInt(td.attrs.colspan) - 1
|
|
|
+ }
|
|
|
+ // 处理行合并
|
|
|
+ if (td.attrs.rowspan) {
|
|
|
+ style += `;grid-row-start:${row};grid-row-end:${row + parseInt(td.attrs.rowspan)}`
|
|
|
+ if (!td.attrs.colspan) {
|
|
|
+ style += `;grid-column-start:${col};grid-column-end:${col + 1}`
|
|
|
+ }
|
|
|
+ // 记录下方单元格被占用
|
|
|
+ for (let rowspan = 1; rowspan < td.attrs.rowspan; rowspan++) {
|
|
|
+ for (let colspan = 0; colspan < (td.attrs.colspan || 1); colspan++) {
|
|
|
+ map[(row + rowspan) + '.' + (col - colspan)] = 1
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (style) {
|
|
|
+ td.attrs.style = style
|
|
|
+ }
|
|
|
+ cells.push(td)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ if (row === 1) {
|
|
|
+ let temp = ''
|
|
|
+ for (let i = 1; i < col; i++) {
|
|
|
+ temp += (width[i] ? width[i] : '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 i = 0; i < nodes.length; i++) {
|
|
|
+ const td = nodes[i]
|
|
|
+ if (td.name === 'th' || td.name === 'td') {
|
|
|
+ if (border) {
|
|
|
+ td.attrs.style = `border:${border}px solid gray;${td.attrs.style || ''}`
|
|
|
+ }
|
|
|
+ if (padding) {
|
|
|
+ td.attrs.style = `padding:${padding}px;${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 = Object.assign({}, 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 i = this.stack.length; i--;) {
|
|
|
+ if (this.stack[i].name === 'table') {
|
|
|
+ this.stack[i].flag = 1 // 指示含有合并单元格
|
|
|
+ break
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else if (node.name === 'ruby') {
|
|
|
+ // 转换 ruby
|
|
|
+ node.name = 'span'
|
|
|
+ for (let i = 0; i < children.length - 1; i++) {
|
|
|
+ if (children[i].type === 'text' && children[i + 1].name === 'rt') {
|
|
|
+ children[i] = {
|
|
|
+ name: 'div',
|
|
|
+ attrs: {
|
|
|
+ style: 'display:inline-block;text-align:center'
|
|
|
+ },
|
|
|
+ children: [{
|
|
|
+ name: 'div',
|
|
|
+ attrs: {
|
|
|
+ style: 'font-size:50%;' + (children[i + 1].attrs.style || '')
|
|
|
+ },
|
|
|
+ children: children[i + 1].children
|
|
|
+ }, children[i]]
|
|
|
+ }
|
|
|
+ children.splice(i + 1, 1)
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } else if (node.c) {
|
|
|
+ node.c = 2
|
|
|
+ for (let i = node.children.length; i--;) {
|
|
|
+ const child = node.children[i]
|
|
|
+ // #ifdef (MP-WEIXIN || MP-QQ || APP-PLUS || MP-360) && VUE3
|
|
|
+ if (child.name && (config.inlineTags[child.name] || (child.attrs.style || '').includes('inline'))) {
|
|
|
+ child.c = 1
|
|
|
+ }
|
|
|
+ // #endif
|
|
|
+ if (!child.c || child.name === 'table') {
|
|
|
+ node.c = 1
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+
|
|
|
+ if ((styleObj.display || '').includes('flex') && !node.c) {
|
|
|
+ for (let i = children.length; i--;) {
|
|
|
+ const item = children[i]
|
|
|
+ if (item.f) {
|
|
|
+ item.attrs.style = (item.attrs.style || '') + item.f
|
|
|
+ item.f = undefined
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // 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) // eslint-disable-line
|
|
|
+ // #endif
|
|
|
+ // #ifndef MP-WEIXIN || MP-QQ || MP-BAIDU || MP-TOUTIAO
|
|
|
+ && !node.c // eslint-disable-line
|
|
|
+ // #endif
|
|
|
+ if (flex) {
|
|
|
+ node.f = ';max-width:100%'
|
|
|
+ }
|
|
|
+
|
|
|
+ // 优化长内容加载速度
|
|
|
+ if (children.length >= 50 && node.c && !(styleObj.display || '').includes('flex')) {
|
|
|
+ let i = children.length - 1
|
|
|
+ for (let j = i; j >= -1; j--) {
|
|
|
+ // 合并多个块级标签
|
|
|
+ if (j === -1 || children[j].c || !children[j].name || (children[j].name !== 'div' && children[j].name !== 'p' && children[j].name[0] !== 'h') || (children[j].attrs.style || '').includes('inline')) {
|
|
|
+ if (i - j >= 5) {
|
|
|
+ children.splice(j + 1, i - j, {
|
|
|
+ name: 'div',
|
|
|
+ attrs: {},
|
|
|
+ children: node.children.slice(j + 1, i + 1)
|
|
|
+ })
|
|
|
+ }
|
|
|
+ i = j - 1
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ // #endif
|
|
|
+
|
|
|
+ for (const key in styleObj) {
|
|
|
+ if (styleObj[key]) {
|
|
|
+ const val = `;${key}:${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%'
|
|
|
+ }
|
|
|
+ } else /* #endif */ {
|
|
|
+ attrs.style += val
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ attrs.style = attrs.style.substr(1) || undefined
|
|
|
+ // #ifdef (MP-WEIXIN || MP-QQ) && VUE3
|
|
|
+ if (!attrs.style) {
|
|
|
+ delete attrs.style
|
|
|
+ }
|
|
|
+ // #endif
|
|
|
+}
|
|
|
+
|
|
|
+/**
|
|
|
+ * @description 解析到文本
|
|
|
+ * @param {String} text 文本内容
|
|
|
+ */
|
|
|
+Parser.prototype.onText = function (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'
|
|
|
+ // #ifdef (MP-BAIDU || MP-ALIPAY || MP-TOUTIAO) && VUE3
|
|
|
+ node.attrs = {}
|
|
|
+ // #endif
|
|
|
+ node.text = decodeEntity(text)
|
|
|
+ if (this.hook(node)) {
|
|
|
+ // #ifdef MP-WEIXIN
|
|
|
+ if (this.options.selectable === 'force' && system.includes('iOS')) {
|
|
|
+ this.expose()
|
|
|
+ node.us = 'T'
|
|
|
+ }
|
|
|
+ // #endif
|
|
|
+ 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
|
|
|
+ this.state = this.endTag
|
|
|
+ return
|
|
|
+ }
|
|
|
+ // 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
|
|
|
+ this.state = this.attrVal
|
|
|
+ return
|
|
|
+ }
|
|
|
+ if (this.content[this.i] === '=') {
|
|
|
+ needVal = true
|
|
|
+ } else {
|
|
|
+ this.start = this.i
|
|
|
+ this.state = this.attrName
|
|
|
+ return
|
|
|
+ }
|
|
|
+ }
|
|
|
+ }
|
|
|
+ } 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
|
|
|
+ if (c === '"' || c === "'") {
|
|
|
+ // 有冒号的属性
|
|
|
+ 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))
|
|
|
+ } else {
|
|
|
+ // 没有冒号的属性
|
|
|
+ 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
|
