#2448

Committed 17 Jan 2026 05:08AM UTC coverage: 96.375% (-0.2%) from 96.624%

Build # #2448

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push

Run Details

61 of 79 branches covered (77.22%)

452 of 469 relevant lines covered (96.38%)

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97.96

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

leizongmin / js-css-filter / #2448

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