CharacterReference.php
1 year ago
DOMTreeBuilder.php
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EventHandler.php
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FileInputStream.php
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InputStream.php
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ParseError.php
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README.md
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StringInputStream.php
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UTF8Utils.php
1 year ago
CharacterReference.php
62 lines
| 1 | <?php |
| 2 | |
| 3 | namespace Masterminds\HTML5\Parser; |
| 4 | |
| 5 | use Masterminds\HTML5\Entities; |
| 6 | |
| 7 | /** |
| 8 | * Manage entity references. |
| 9 | * |
| 10 | * This is a simple resolver for HTML5 character reference entitites. See Entities for the list of supported entities. |
| 11 | */ |
| 12 | class CharacterReference |
| 13 | { |
| 14 | protected static $numeric_mask = array( |
| 15 | 0x0, |
| 16 | 0x2FFFF, |
| 17 | 0, |
| 18 | 0xFFFF, |
| 19 | ); |
| 20 | |
| 21 | /** |
| 22 | * Given a name (e.g. 'amp'), lookup the UTF-8 character ('&'). |
| 23 | * |
| 24 | * @param string $name The name to look up. |
| 25 | * |
| 26 | * @return string The character sequence. In UTF-8 this may be more than one byte. |
| 27 | */ |
| 28 | public static function lookupName($name) |
| 29 | { |
| 30 | // Do we really want to return NULL here? or FFFD |
| 31 | return isset(Entities::$byName[$name]) ? Entities::$byName[$name] : null; |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * Given a decimal number, return the UTF-8 character. |
| 36 | * |
| 37 | * @param $int |
| 38 | * |
| 39 | * @return false|string|string[]|null |
| 40 | */ |
| 41 | public static function lookupDecimal($int) |
| 42 | { |
| 43 | $entity = '&#' . $int . ';'; |
| 44 | |
| 45 | // UNTESTED: This may fail on some planes. Couldn't find full documentation |
| 46 | // on the value of the mask array. |
| 47 | return mb_decode_numericentity($entity, static::$numeric_mask, 'utf-8'); |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * Given a hexidecimal number, return the UTF-8 character. |
| 52 | * |
| 53 | * @param $hexdec |
| 54 | * |
| 55 | * @return false|string|string[]|null |
| 56 | */ |
| 57 | public static function lookupHex($hexdec) |
| 58 | { |
| 59 | return static::lookupDecimal(hexdec($hexdec)); |
| 60 | } |
| 61 | } |
| 62 |