diff options
Diffstat (limited to 'inc/3rdparty/htmlpurifier/HTMLPurifier/AttrCollections.php')
| -rw-r--r-- | inc/3rdparty/htmlpurifier/HTMLPurifier/AttrCollections.php | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrCollections.php b/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrCollections.php new file mode 100644 index 00000000..2d2c7d28 --- /dev/null +++ b/inc/3rdparty/htmlpurifier/HTMLPurifier/AttrCollections.php | |||
| @@ -0,0 +1,143 @@ | |||
| 1 | <?php | ||
| 2 | |||
| 3 | /** | ||
| 4 | * Defines common attribute collections that modules reference | ||
| 5 | */ | ||
| 6 | |||
| 7 | class HTMLPurifier_AttrCollections | ||
| 8 | { | ||
| 9 | |||
| 10 | /** | ||
| 11 | * Associative array of attribute collections, indexed by name. | ||
| 12 | * @type array | ||
| 13 | */ | ||
| 14 | public $info = array(); | ||
| 15 | |||
| 16 | /** | ||
| 17 | * Performs all expansions on internal data for use by other inclusions | ||
| 18 | * It also collects all attribute collection extensions from | ||
| 19 | * modules | ||
| 20 | * @param HTMLPurifier_AttrTypes $attr_types HTMLPurifier_AttrTypes instance | ||
| 21 | * @param HTMLPurifier_HTMLModule[] $modules Hash array of HTMLPurifier_HTMLModule members | ||
| 22 | */ | ||
| 23 | public function __construct($attr_types, $modules) | ||
| 24 | { | ||
| 25 | // load extensions from the modules | ||
| 26 | foreach ($modules as $module) { | ||
| 27 | foreach ($module->attr_collections as $coll_i => $coll) { | ||
| 28 | if (!isset($this->info[$coll_i])) { | ||
| 29 | $this->info[$coll_i] = array(); | ||
| 30 | } | ||
| 31 | foreach ($coll as $attr_i => $attr) { | ||
| 32 | if ($attr_i === 0 && isset($this->info[$coll_i][$attr_i])) { | ||
| 33 | // merge in includes | ||
| 34 | $this->info[$coll_i][$attr_i] = array_merge( | ||
| 35 | $this->info[$coll_i][$attr_i], | ||
| 36 | $attr | ||
| 37 | ); | ||
| 38 | continue; | ||
| 39 | } | ||
| 40 | $this->info[$coll_i][$attr_i] = $attr; | ||
| 41 | } | ||
| 42 | } | ||
| 43 | } | ||
| 44 | // perform internal expansions and inclusions | ||
| 45 | foreach ($this->info as $name => $attr) { | ||
| 46 | // merge attribute collections that include others | ||
| 47 | $this->performInclusions($this->info[$name]); | ||
| 48 | // replace string identifiers with actual attribute objects | ||
| 49 | $this->expandIdentifiers($this->info[$name], $attr_types); | ||
| 50 | } | ||
| 51 | } | ||
| 52 | |||
| 53 | /** | ||
| 54 | * Takes a reference to an attribute associative array and performs | ||
| 55 | * all inclusions specified by the zero index. | ||
| 56 | * @param array &$attr Reference to attribute array | ||
| 57 | */ | ||
| 58 | public function performInclusions(&$attr) | ||
| 59 | { | ||
| 60 | if (!isset($attr[0])) { | ||
| 61 | return; | ||
| 62 | } | ||
| 63 | $merge = $attr[0]; | ||
| 64 | $seen = array(); // recursion guard | ||
| 65 | // loop through all the inclusions | ||
| 66 | for ($i = 0; isset($merge[$i]); $i++) { | ||
| 67 | if (isset($seen[$merge[$i]])) { | ||
| 68 | continue; | ||
| 69 | } | ||
| 70 | $seen[$merge[$i]] = true; | ||
| 71 | // foreach attribute of the inclusion, copy it over | ||
| 72 | if (!isset($this->info[$merge[$i]])) { | ||
| 73 | continue; | ||
| 74 | } | ||
| 75 | foreach ($this->info[$merge[$i]] as $key => $value) { | ||
| 76 | if (isset($attr[$key])) { | ||
| 77 | continue; | ||
| 78 | } // also catches more inclusions | ||
| 79 | $attr[$key] = $value; | ||
| 80 | } | ||
| 81 | if (isset($this->info[$merge[$i]][0])) { | ||
| 82 | // recursion | ||
| 83 | $merge = array_merge($merge, $this->info[$merge[$i]][0]); | ||
| 84 | } | ||
| 85 | } | ||
| 86 | unset($attr[0]); | ||
| 87 | } | ||
| 88 | |||
| 89 | /** | ||
| 90 | * Expands all string identifiers in an attribute array by replacing | ||
| 91 | * them with the appropriate values inside HTMLPurifier_AttrTypes | ||
| 92 | * @param array &$attr Reference to attribute array | ||
| 93 | * @param HTMLPurifier_AttrTypes $attr_types HTMLPurifier_AttrTypes instance | ||
| 94 | */ | ||
| 95 | public function expandIdentifiers(&$attr, $attr_types) | ||
| 96 | { | ||
| 97 | // because foreach will process new elements we add, make sure we | ||
| 98 | // skip duplicates | ||
| 99 | $processed = array(); | ||
| 100 | |||
| 101 | foreach ($attr as $def_i => $def) { | ||
| 102 | // skip inclusions | ||
| 103 | if ($def_i === 0) { | ||
| 104 | continue; | ||
| 105 | } | ||
| 106 | |||
| 107 | if (isset($processed[$def_i])) { | ||
| 108 | continue; | ||
| 109 | } | ||
| 110 | |||
| 111 | // determine whether or not attribute is required | ||
| 112 | if ($required = (strpos($def_i, '*') !== false)) { | ||
| 113 | // rename the definition | ||
| 114 | unset($attr[$def_i]); | ||
| 115 | $def_i = trim($def_i, '*'); | ||
| 116 | $attr[$def_i] = $def; | ||
| 117 | } | ||
| 118 | |||
| 119 | $processed[$def_i] = true; | ||
| 120 | |||
| 121 | // if we've already got a literal object, move on | ||
| 122 | if (is_object($def)) { | ||
| 123 | // preserve previous required | ||
| 124 | $attr[$def_i]->required = ($required || $attr[$def_i]->required); | ||
| 125 | continue; | ||
| 126 | } | ||
| 127 | |||
| 128 | if ($def === false) { | ||
| 129 | unset($attr[$def_i]); | ||
| 130 | continue; | ||
| 131 | } | ||
| 132 | |||
| 133 | if ($t = $attr_types->get($def)) { | ||
| 134 | $attr[$def_i] = $t; | ||
| 135 | $attr[$def_i]->required = $required; | ||
| 136 | } else { | ||
| 137 | unset($attr[$def_i]); | ||
| 138 | } | ||
| 139 | } | ||
| 140 | } | ||
| 141 | } | ||
| 142 | |||
| 143 | // vim: et sw=4 sts=4 | ||