]>
Commit | Line | Data |
---|---|---|
d4949327 NL |
1 | <?php\r |
2 | \r | |
3 | /**\r | |
4 | * Definition that allows a set of elements, but disallows empty children.\r | |
5 | */\r | |
6 | class HTMLPurifier_ChildDef_Required extends HTMLPurifier_ChildDef\r | |
7 | {\r | |
8 | /**\r | |
9 | * Lookup table of allowed elements.\r | |
10 | * @type array\r | |
11 | */\r | |
12 | public $elements = array();\r | |
13 | \r | |
14 | /**\r | |
15 | * Whether or not the last passed node was all whitespace.\r | |
16 | * @type bool\r | |
17 | */\r | |
18 | protected $whitespace = false;\r | |
19 | \r | |
20 | /**\r | |
21 | * @param array|string $elements List of allowed element names (lowercase).\r | |
22 | */\r | |
23 | public function __construct($elements)\r | |
24 | {\r | |
25 | if (is_string($elements)) {\r | |
26 | $elements = str_replace(' ', '', $elements);\r | |
27 | $elements = explode('|', $elements);\r | |
28 | }\r | |
29 | $keys = array_keys($elements);\r | |
30 | if ($keys == array_keys($keys)) {\r | |
31 | $elements = array_flip($elements);\r | |
32 | foreach ($elements as $i => $x) {\r | |
33 | $elements[$i] = true;\r | |
34 | if (empty($i)) {\r | |
35 | unset($elements[$i]);\r | |
36 | } // remove blank\r | |
37 | }\r | |
38 | }\r | |
39 | $this->elements = $elements;\r | |
40 | }\r | |
41 | \r | |
42 | /**\r | |
43 | * @type bool\r | |
44 | */\r | |
45 | public $allow_empty = false;\r | |
46 | \r | |
47 | /**\r | |
48 | * @type string\r | |
49 | */\r | |
50 | public $type = 'required';\r | |
51 | \r | |
52 | /**\r | |
53 | * @param array $children\r | |
54 | * @param HTMLPurifier_Config $config\r | |
55 | * @param HTMLPurifier_Context $context\r | |
56 | * @return array\r | |
57 | */\r | |
58 | public function validateChildren($children, $config, $context)\r | |
59 | {\r | |
60 | // Flag for subclasses\r | |
61 | $this->whitespace = false;\r | |
62 | \r | |
63 | // if there are no tokens, delete parent node\r | |
64 | if (empty($children)) {\r | |
65 | return false;\r | |
66 | }\r | |
67 | \r | |
68 | // the new set of children\r | |
69 | $result = array();\r | |
70 | \r | |
71 | // whether or not parsed character data is allowed\r | |
72 | // this controls whether or not we silently drop a tag\r | |
73 | // or generate escaped HTML from it\r | |
74 | $pcdata_allowed = isset($this->elements['#PCDATA']);\r | |
75 | \r | |
76 | // a little sanity check to make sure it's not ALL whitespace\r | |
77 | $all_whitespace = true;\r | |
78 | \r | |
79 | $stack = array_reverse($children);\r | |
80 | while (!empty($stack)) {\r | |
81 | $node = array_pop($stack);\r | |
82 | if (!empty($node->is_whitespace)) {\r | |
83 | $result[] = $node;\r | |
84 | continue;\r | |
85 | }\r | |
86 | $all_whitespace = false; // phew, we're not talking about whitespace\r | |
87 | \r | |
88 | if (!isset($this->elements[$node->name])) {\r | |
89 | // special case text\r | |
90 | // XXX One of these ought to be redundant or something\r | |
91 | if ($pcdata_allowed && $node instanceof HTMLPurifier_Node_Text) {\r | |
92 | $result[] = $node;\r | |
93 | continue;\r | |
94 | }\r | |
95 | // spill the child contents in\r | |
96 | // ToDo: Make configurable\r | |
97 | if ($node instanceof HTMLPurifier_Node_Element) {\r | |
98 | for ($i = count($node->children) - 1; $i >= 0; $i--) {\r | |
99 | $stack[] = $node->children[$i];\r | |
100 | }\r | |
101 | continue;\r | |
102 | }\r | |
103 | continue;\r | |
104 | }\r | |
105 | $result[] = $node;\r | |
106 | }\r | |
107 | if (empty($result)) {\r | |
108 | return false;\r | |
109 | }\r | |
110 | if ($all_whitespace) {\r | |
111 | $this->whitespace = true;\r | |
112 | return false;\r | |
113 | }\r | |
114 | return $result;\r | |
115 | }\r | |
116 | }\r | |
117 | \r | |
118 | // vim: et sw=4 sts=4\r |