projects / github / wallabag / wallabag.git / blame
| 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 |