#2176

Committed 23 Dec 2025 08:42PM UTC coverage: 96.129% (-0.2%) from 96.368%

Build # #2176

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push

Run Details

60 of 80 branches covered (75.0%)

447 of 465 relevant lines covered (96.13%)

9.53 hits per line

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95.92

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

leizongmin / js-css-filter / #2176

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