基于uni-app的Vue古典音乐小程序设计源码

/** * @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: '…', larr: '←', uarr: '↑', rarr: '→', darr: '↓' }, // 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 &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 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 合并多个块级标签，加快长内容渲染 * @param {Array} nodes 要合并的标签数组 */ function mergeNodes (nodes) { let i = nodes.length - 1 for (let j = i; j >= -1; j--) { if (j === -1 || nodes[j].c || !nodes[j].name || (nodes[j].name !== 'div' && nodes[j].name !== 'p' && nodes[j].name[0] !== 'h') || (nodes[j].attrs.style || '').includes('inline')) { if (i - j >= 5) { nodes.splice(j + 1, i - j, { name: 'div', attrs: {}, children: nodes.slice(j + 1, i + 1) }) } i = j - 1 } } } /** * @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.imgList._unloadimgs = 0 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() } if (this.nodes.length > 50) { mergeNodes(this.nodes) } 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 } /* #ifdef APP-PLUS */ else { url = plus.io.convertLocalFileSystemURL(url) } /* #endif */ } else if (!url.includes('data:') && !url.includes('://')) { if (domain) { url = domain + '/' + url } /* #ifdef APP-PLUS */ else { url = plus.io.convertLocalFileSystemURL(url) } /* #endif */ } 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.joi