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d4949327 NL |
1 | <?php\r |
2 | \r | |
3 | /**\r | |
4 | * Validates shorthand CSS property list-style.\r | |
5 | * @warning Does not support url tokens that have internal spaces.\r | |
6 | */\r | |
7 | class HTMLPurifier_AttrDef_CSS_ListStyle extends HTMLPurifier_AttrDef\r | |
8 | {\r | |
9 | \r | |
10 | /**\r | |
11 | * Local copy of validators.\r | |
12 | * @type HTMLPurifier_AttrDef[]\r | |
13 | * @note See HTMLPurifier_AttrDef_CSS_Font::$info for a similar impl.\r | |
14 | */\r | |
15 | protected $info;\r | |
16 | \r | |
17 | /**\r | |
18 | * @param HTMLPurifier_Config $config\r | |
19 | */\r | |
20 | public function __construct($config)\r | |
21 | {\r | |
22 | $def = $config->getCSSDefinition();\r | |
23 | $this->info['list-style-type'] = $def->info['list-style-type'];\r | |
24 | $this->info['list-style-position'] = $def->info['list-style-position'];\r | |
25 | $this->info['list-style-image'] = $def->info['list-style-image'];\r | |
26 | }\r | |
27 | \r | |
28 | /**\r | |
29 | * @param string $string\r | |
30 | * @param HTMLPurifier_Config $config\r | |
31 | * @param HTMLPurifier_Context $context\r | |
32 | * @return bool|string\r | |
33 | */\r | |
34 | public function validate($string, $config, $context)\r | |
35 | {\r | |
36 | // regular pre-processing\r | |
37 | $string = $this->parseCDATA($string);\r | |
38 | if ($string === '') {\r | |
39 | return false;\r | |
40 | }\r | |
41 | \r | |
42 | // assumes URI doesn't have spaces in it\r | |
43 | $bits = explode(' ', strtolower($string)); // bits to process\r | |
44 | \r | |
45 | $caught = array();\r | |
46 | $caught['type'] = false;\r | |
47 | $caught['position'] = false;\r | |
48 | $caught['image'] = false;\r | |
49 | \r | |
50 | $i = 0; // number of catches\r | |
51 | $none = false;\r | |
52 | \r | |
53 | foreach ($bits as $bit) {\r | |
54 | if ($i >= 3) {\r | |
55 | return;\r | |
56 | } // optimization bit\r | |
57 | if ($bit === '') {\r | |
58 | continue;\r | |
59 | }\r | |
60 | foreach ($caught as $key => $status) {\r | |
61 | if ($status !== false) {\r | |
62 | continue;\r | |
63 | }\r | |
64 | $r = $this->info['list-style-' . $key]->validate($bit, $config, $context);\r | |
65 | if ($r === false) {\r | |
66 | continue;\r | |
67 | }\r | |
68 | if ($r === 'none') {\r | |
69 | if ($none) {\r | |
70 | continue;\r | |
71 | } else {\r | |
72 | $none = true;\r | |
73 | }\r | |
74 | if ($key == 'image') {\r | |
75 | continue;\r | |
76 | }\r | |
77 | }\r | |
78 | $caught[$key] = $r;\r | |
79 | $i++;\r | |
80 | break;\r | |
81 | }\r | |
82 | }\r | |
83 | \r | |
84 | if (!$i) {\r | |
85 | return false;\r | |
86 | }\r | |
87 | \r | |
88 | $ret = array();\r | |
89 | \r | |
90 | // construct type\r | |
91 | if ($caught['type']) {\r | |
92 | $ret[] = $caught['type'];\r | |
93 | }\r | |
94 | \r | |
95 | // construct image\r | |
96 | if ($caught['image']) {\r | |
97 | $ret[] = $caught['image'];\r | |
98 | }\r | |
99 | \r | |
100 | // construct position\r | |
101 | if ($caught['position']) {\r | |
102 | $ret[] = $caught['position'];\r | |
103 | }\r | |
104 | \r | |
105 | if (empty($ret)) {\r | |
106 | return false;\r | |
107 | }\r | |
108 | return implode(' ', $ret);\r | |
109 | }\r | |
110 | }\r | |
111 | \r | |
112 | // vim: et sw=4 sts=4\r |