#2142

Committed 18 Dec 2025 05:41PM UTC coverage: 96.368% (-0.4%) from 96.767%

Build # #2142

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push

Run Details

55 of 74 branches covered (74.32%)

451 of 468 relevant lines covered (96.37%)

9.49 hits per line

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96.3

/lib/css.js

/**
 * cssfilter
 *
 * @author 老雷<leizongmin@gmail.com>
 */

var DEFAULT = require('./default');
var parseStyle = require('./parser');
var _ = require('./util');


/**
 * 返回值是否为空
 *
 * @param {Object} obj
 * @return {Boolean}
 */
function isNull (obj) {
  return (obj === undefined || obj === null);
}

/**
 * 浅拷贝对象
 *
 * @param {Object} obj
 * @return {Object}
 */
function shallowCopyObject (obj) {
  var ret = {};
  for (var i in obj) {
    ret[i] = obj[i];
  }
  return ret;
}

/**
 * 创建CSS过滤器
 *
 * @param {Object} options
 *   - {Object} whiteList
 *   - {Function} onAttr
 *   - {Function} onIgnoreAttr
 *   - {Function} safeAttrValue
 */
function FilterCSS (options) {
  options = shallowCopyObject(options || {});
  options.whiteList = options.whiteList || DEFAULT.whiteList;
  options.onAttr = options.onAttr || DEFAULT.onAttr;
  options.onIgnoreAttr = options.onIgnoreAttr || DEFAULT.onIgnoreAttr;
  options.safeAttrValue = options.safeAttrValue || DEFAULT.safeAttrValue;
  this.options = options;
}

FilterCSS.prototype.process = function (css) {
  // 兼容各种奇葩输入
  css = css || '';
  css = css.toString();
  if (!css) return '';

  var me = this;
  var options = me.options;
  var whiteList = options.whiteList;
  var onAttr = options.onAttr;
  var onIgnoreAttr = options.onIgnoreAttr;
  var safeAttrValue = options.safeAttrValue;

  var retCSS = parseStyle(css, function (sourcePosition, position, name, value, source) {

    var check = whiteList[name];
    var isWhite = false;
    if (check === true) isWhite = check;
    else if (typeof check === 'function') isWhite = check(value);
    else if (check instanceof RegExp) isWhite = check.test(value);
    if (isWhite !== true) isWhite = false;

    // 如果过滤后 value 为空则直接忽略
    value = safeAttrValue(name, value);
    if (!value) return;

    var opts = {
      position: position,
      sourcePosition: sourcePosition,
      source: source,
      isWhite: isWhite
    };

    if (isWhite) {

      var ret = onAttr(name, value, opts);
      if (isNull(ret)) {
        return name + ':' + value;
      } else {
        return ret;
      }

    } else {

      var ret = onIgnoreAttr(name, value, opts);
      if (!isNull(ret)) {
        return ret;
      }

    }
  });

  return retCSS;
};


module.exports = FilterCSS;

1	/**
2	* cssfilter
3	*
4	* @author 老雷<leizongmin@gmail.com>
5	*/
6
7	var DEFAULT = require('./default');	1✔
8	var parseStyle = require('./parser');	1✔
9	var _ = require('./util');	1✔
10		1✔
11
12	/**
13	* 返回值是否为空
14	*
15	* @param {Object} obj
16	* @return {Boolean}
17	*/
18	function isNull (obj) {
19	return (obj === undefined \|\| obj === null);	1✔
20	}	12✔
21
22	/**
23	* 浅拷贝对象
24	*
25	* @param {Object} obj
26	* @return {Object}
27	*/
28	function shallowCopyObject (obj) {
29	var ret = {};	1✔
30	for (var i in obj) {	12!
31	ret[i] = obj[i];	12!
32	}	12✔
33	return ret;
34	}
35
36	/**
37	* 创建CSS过滤器
38	*
39	* @param {Object} options
40	* - {Object} whiteList
41	* - {Function} onAttr	1✔
42	* - {Function} onIgnoreAttr	6✔
43	* - {Function} safeAttrValue	6✔
44	*/	4✔
45	function FilterCSS (options) {
46	options = shallowCopyObject(options \|\| {});	6✔
47	options.whiteList = options.whiteList \|\| DEFAULT.whiteList;
48	options.onAttr = options.onAttr \|\| DEFAULT.onAttr;
49	options.onIgnoreAttr = options.onIgnoreAttr \|\| DEFAULT.onIgnoreAttr;
50	options.safeAttrValue = options.safeAttrValue \|\| DEFAULT.safeAttrValue;
51	this.options = options;
52	}
53
54	FilterCSS.prototype.process = function (css) {
55	// 兼容各种奇葩输入
56	css = css \|\| '';
57	css = css.toString();	1✔
58	if (!css) return '';	6✔
59		6✔
60	var me = this;	6✔
61	var options = me.options;	6✔
62	var whiteList = options.whiteList;	6✔
63	var onAttr = options.onAttr;
64	var onIgnoreAttr = options.onIgnoreAttr;
65	var safeAttrValue = options.safeAttrValue;	1✔
66
67	var retCSS = parseStyle(css, function (sourcePosition, position, name, value, source) {	5!
68		5✔
69	var check = whiteList[name];	5!
70	var isWhite = false;
71	if (check === true) isWhite = check;	5✔
72	else if (typeof check === 'function') isWhite = check(value);	5✔
73	else if (check instanceof RegExp) isWhite = check.test(value);	5✔
74	if (isWhite !== true) isWhite = false;	5✔
75		5✔
76	// 如果过滤后 value 为空则直接忽略
77	value = safeAttrValue(name, value);	5✔
78	if (!value) return;
79		12✔
80	var opts = {	12✔
81	position: position,	12✔
82	sourcePosition: sourcePosition,	4!
83	source: source,	4!
84	isWhite: isWhite	12✔
85	};
86		12✔
87	if (isWhite) {
88
89	var ret = onAttr(name, value, opts);
90	if (isNull(ret)) {
91	return name + ':' + value;
92	} else {
93	return ret;	12✔
94	}
95		8✔
96	} else {	8!
97		×
98	var ret = onIgnoreAttr(name, value, opts);
99	if (!isNull(ret)) {
100	return ret;	8✔
101	}	8✔
102		6✔
103	}
104	});	2✔
105
106	return retCSS;
107	};
108
109		4✔
110	module.exports = FilterCSS;	4!

leizongmin / js-css-filter / #2142

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