112 lines
3.4 KiB
JavaScript
112 lines
3.4 KiB
JavaScript
// +----------------------------------------------------------------------
|
||
// | CRMEB [ CRMEB赋能开发者，助力企业发展 ]
|
||
// +----------------------------------------------------------------------
|
||
// | Copyright (c) 2016~2021 https://www.crmeb.com All rights reserved.
|
||
// +----------------------------------------------------------------------
|
||
// | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权
|
||
// +----------------------------------------------------------------------
|
||
// | Author: CRMEB Team <admin@crmeb.com>
|
||
// +----------------------------------------------------------------------
|
||
/*
|
||
解析和匹配 Css 的选择器
|
||
github：https://github.com/jin-yufeng/Parser
|
||
docs：https://jin-yufeng.github.io/Parser
|
||
author：JinYufeng
|
||
update：2020/03/15
|
||
*/
|
||
var cfg = require('./config.js');
|
||
class CssHandler {
|
||
constructor(tagStyle) {
|
||
var styles = Object.assign({}, cfg.userAgentStyles);
|
||
for (var item in tagStyle)
|
||
styles[item] = (styles[item] ? styles[item] + ';' : '') + tagStyle[item];
|
||
this.styles = styles;
|
||
}
|
||
getStyle = data => this.styles = new CssParser(data, this.styles).parse();
|
||
match(name, attrs) {
|
||
var tmp, matched = (tmp = this.styles[name]) ? tmp + ';' : '';
|
||
if (attrs.class) {
|
||
var items = attrs.class.split(' ');
|
||
for (var i = 0, item; item = items[i]; i++)
|
||
if (tmp = this.styles['.' + item])
|
||
matched += tmp + ';';
|
||
}
|
||
if (tmp = this.styles['#' + attrs.id])
|
||
matched += tmp + ';';
|
||
return matched;
|
||
}
|
||
}
|
||
module.exports = CssHandler;
|
||
class CssParser {
|
||
constructor(data, init) {
|
||
this.data = data;
|
||
this.floor = 0;
|
||
this.i = 0;
|
||
this.list = [];
|
||
this.res = init;
|
||
this.state = this.Space;
|
||
}
|
||
parse() {
|
||
for (var c; c = this.data[this.i]; this.i++)
|
||
this.state(c);
|
||
return this.res;
|
||
}
|
||
section = () => this.data.substring(this.start, this.i);
|
||
isLetter = c => (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
|
||
// 状态机
|
||
Space(c) {
|
||
if (c == '.' || c == '#' || this.isLetter(c)) {
|
||
this.start = this.i;
|
||
this.state = this.Name;
|
||
} else if (c == '/' && this.data[this.i + 1] == '*')
|
||
this.Comment();
|
||
else if (!cfg.blankChar[c] && c != ';')
|
||
this.state = this.Ignore;
|
||
}
|
||
Comment() {
|
||
this.i = this.data.indexOf('*/', this.i) + 1;
|
||
if (!this.i) this.i = this.data.length;
|
||
this.state = this.Space;
|
||
}
|
||
Ignore(c) {
|
||
if (c == '{') this.floor++;
|
||
else if (c == '}' && !--this.floor) this.state = this.Space;
|
||
}
|
||
Name(c) {
|
||
if (cfg.blankChar[c]) {
|
||
this.list.push(this.section());
|
||
this.state = this.NameSpace;
|
||
} else if (c == '{') {
|
||
this.list.push(this.section());
|
||
this.Content();
|
||
} else if (c == ',') {
|
||
this.list.push(this.section());
|
||
this.Comma();
|
||
} else if (!this.isLetter(c) && (c < '0' || c > '9') && c != '-' && c != '_')
|
||
this.state = this.Ignore;
|
||
}
|
||
NameSpace(c) {
|
||
if (c == '{') this.Content();
|
||
else if (c == ',') this.Comma();
|
||
else if (!cfg.blankChar[c]) this.state = this.Ignore;
|
||
}
|
||
Comma() {
|
||
while (cfg.blankChar[this.data[++this.i]]);
|
||
if (this.data[this.i] == '{') this.Content();
|
||
else {
|
||
this.start = this.i--;
|
||
this.state = this.Name;
|
||
}
|
||
}
|
||
Content() {
|
||
this.start = ++this.i;
|
||
if ((this.i = this.data.indexOf('}', this.i)) == -1) this.i = this.data.length;
|
||
var content = this.section();
|
||
for (var i = 0, item; item = this.list[i++];)
|
||
if (this.res[item]) this.res[item] += ';' + content;
|
||
else this.res[item] = content;
|
||
this.list = [];
|
||
this.state = this.Space;
|
||
}
|
||
}
|