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<?php |
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namespace WindPressDeps\Masterminds\HTML5\Parser; |
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|
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use WindPressDeps\Masterminds\HTML5\Entities; |
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/** |
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* Manage entity references. |
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* |
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* This is a simple resolver for HTML5 character reference entitites. See Entities for the list of supported entities. |
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*/ |
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class CharacterReference |
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{ |
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protected static $numeric_mask = array(0x0, 0x2ffff, 0, 0xffff); |
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/** |
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* Given a name (e.g. 'amp'), lookup the UTF-8 character ('&'). |
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* |
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* @param string $name The name to look up. |
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* |
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* @return string The character sequence. In UTF-8 this may be more than one byte. |
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*/ |
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public static function lookupName($name) |
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{ |
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// Do we really want to return NULL here? or FFFD |
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return isset(Entities::$byName[$name]) ? Entities::$byName[$name] : null; |
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} |
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/** |
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* Given a decimal number, return the UTF-8 character. |
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* |
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* @param $int |
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* |
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* @return false|string|string[]|null |
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*/ |
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public static function lookupDecimal($int) |
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{ |
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$entity = '&#' . $int . ';'; |
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// UNTESTED: This may fail on some planes. Couldn't find full documentation |
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// on the value of the mask array. |
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return \mb_decode_numericentity($entity, static::$numeric_mask, 'utf-8'); |
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} |
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/** |
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* Given a hexidecimal number, return the UTF-8 character. |
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* |
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* @param $hexdec |
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* |
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* @return false|string|string[]|null |
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*/ |
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public static function lookupHex($hexdec) |
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{ |
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return static::lookupDecimal(\hexdec($hexdec)); |
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} |
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} |
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