1: | <?php |
2: | |
3: | /** |
4: | * Generic pre-transform that converts an attribute with a fixed number of |
5: | * values (enumerated) to CSS. |
6: | */ |
7: | class HTMLPurifier_AttrTransform_EnumToCSS extends HTMLPurifier_AttrTransform |
8: | { |
9: | /** |
10: | * Name of attribute to transform from. |
11: | * @type string |
12: | */ |
13: | protected $attr; |
14: | |
15: | /** |
16: | * Lookup array of attribute values to CSS. |
17: | * @type array |
18: | */ |
19: | protected $enumToCSS = array(); |
20: | |
21: | /** |
22: | * Case sensitivity of the matching. |
23: | * @type bool |
24: | * @warning Currently can only be guaranteed to work with ASCII |
25: | * values. |
26: | */ |
27: | protected $caseSensitive = false; |
28: | |
29: | /** |
30: | * @param string $attr Attribute name to transform from |
31: | * @param array $enum_to_css Lookup array of attribute values to CSS |
32: | * @param bool $case_sensitive Case sensitivity indicator, default false |
33: | */ |
34: | public function __construct($attr, $enum_to_css, $case_sensitive = false) |
35: | { |
36: | $this->attr = $attr; |
37: | $this->enumToCSS = $enum_to_css; |
38: | $this->caseSensitive = (bool)$case_sensitive; |
39: | } |
40: | |
41: | /** |
42: | * @param array $attr |
43: | * @param HTMLPurifier_Config $config |
44: | * @param HTMLPurifier_Context $context |
45: | * @return array |
46: | */ |
47: | public function transform($attr, $config, $context) |
48: | { |
49: | if (!isset($attr[$this->attr])) { |
50: | return $attr; |
51: | } |
52: | |
53: | $value = trim($attr[$this->attr]); |
54: | unset($attr[$this->attr]); |
55: | |
56: | if (!$this->caseSensitive) { |
57: | $value = strtolower($value); |
58: | } |
59: | |
60: | if (!isset($this->enumToCSS[$value])) { |
61: | return $attr; |
62: | } |
63: | $this->prependCSS($attr, $this->enumToCSS[$value]); |
64: | return $attr; |
65: | } |
66: | } |
67: | |
68: | // vim: et sw=4 sts=4 |
69: |