crmeb_shop/template/uni-app/components/mp-html/parser.js

"use strict";

/**
 * @fileoverview html 解析器
 */
// 配置
var 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

	}
};
var windowWidth = uni.getSystemInfoSync().windowWidth;
var blankChar = makeMap(' ,\r,\n,\t,\f');
var 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) {
	var map = Object.create(null),
		list = str.split(',');

	for (var 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) {
	var i = str.indexOf('&');

	while (i != -1) {
		var j = str.indexOf(';', i + 3),
			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
 */


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 = [];
}
/**
 * @description 执行解析
 * @param {String} content 要解析的文本
 */


parser.prototype.parse = function(content) {
	// 插件处理
	for (var 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 (var i = this.stack.length; i--;) {
		var 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
 */


parser.prototype.hook = function(node) {
	for (var 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) {
	var domain = this.options.domain;

	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} 
 */


parser.prototype.parseStyle = function(node) {
	var attrs = node.attrs,
		list = (this.tagStyle[node.name] || '').split(';').concat((attrs.style || '').split(';')),
		styleObj = {},
		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 (var i = 0, len = list.length; i < len; i++) {
		var info = list[i].split(':');
		if (info.length < 2) continue;
		var key = info.shift().trim().toLowerCase(),
			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')) {
				var 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, function($) {
				return parseFloat($) * 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 = true; // 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-') {
		// 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
 */


parser.prototype.onAttrVal = function(val) {
	var 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
 */


parser.prototype.onOpenTag = function(selfClose) {
	// 拼装 node
	var node = Object.create(null);
	node.name = this.tagName;
	node.attrs = this.attrs;
	this.attrs = Object.create(null);
	var attrs = node.attrs,
		parent = this.stack[this.stack.length - 1],
		siblings = parent ? parent.children : this.nodes,
		close = this.xml ? selfClose : config.voidTags[node.name]; // 转换 embed 标签

	if (node.name == 'embed') {
		// #ifndef H5 || APP-PLUS
		var 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


		var 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 (var i = this.stack.length; i--;) {
						var item = this.stack[i];

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


						var 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 (var 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 (var _j = i + 1; _j < this.stack.length; _j++) {
								var _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();

					var _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
						var _i = _src.indexOf('://');

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

							var 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 (var 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
 */


parser.prototype.onCloseTag = function(name) {
	// 依次出栈到匹配为止
	name = this.xml ? name : name.toLowerCase();
	var 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') {
		var siblings = this.stack.length ? this.stack[this.stack.length - 1].children : this.nodes;
		siblings.push({
			name: name,
			attrs: {}
		});
	}
};
/**
 * @description 处理标签出栈
 * @private
 */


parser.prototype.popNode = function() {
	var node = this.stack.pop(),
		attrs = node.attrs,
		children = node.children,
		parent = this.stack[this.stack.length - 1],
		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 (var i = this.stack.length; i--;) {
			if (this.stack[i].pre) this.pre = true;
		}
	}

	var styleObj = {}; // 转换 svg

	if (node.name == 'svg') {
		// #ifndef APP-PLUS-NVUE
		var src = '',
			style = attrs.style;
		attrs.style = '';
		attrs.xmlns = 'http://www.w3.org/2000/svg';

		(function traversal(node) {
			src += '<' + node.name;

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

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

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

				for (var _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: 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) {
			var 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') {
		var 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 (var 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 (var _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) {
		var 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 (var _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
		var padding = parseFloat(attrs.cellpadding),
			spacing = parseFloat(attrs.cellspacing),
			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';

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

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

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

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

						var _style2 = td.attrs.style || '',
							start = _style2.indexOf('width') ? _style2.indexOf(';width') : 0; // 提取出 td 的宽度


						if (start != -1) {
							var 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 (var k = 1; k < td.attrs.rowspan; k++) {
								map[row + k + '.' + col] = 1;
							}
						}

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

				if (row == 1) {
					var temp = '';

					for (var _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 (var _i7 = 0; _i7 < nodes.length; _i7++) {
						var _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')) {
			var 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 (var _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 (var _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 (var _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 (var _i11 = children.length; _i11--;) {
			var _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

	var 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 (var key in styleObj) {
		if (styleObj[key]) {
			var 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%';
			} else // #endif
				attrs.style += val;
		}
	}

	attrs.style = attrs.style.substr(1) || void 0;
};
/**
 * @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
		var trim = '',
			flag;

		for (var 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;
	}

	var node = Object.create(null);
	node.type = 'text';
	node.text = decodeEntity(text);

	if (this.hook(node)) {
		var 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 (var 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) {
	var 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;
	}

	var 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));
		var 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


		var 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() {
	var 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));
		var needVal = c == '=',
			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() {
	var c = this.content[this.i],
		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() {
	var 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++;
};

module.exports = parser;