projects / github / wallabag / wallabag.git / blame
| Commit | Line | Data |
|---|---|---|
| d4949327 NL |
1 | <?php\r |
| 2 | \r | |
| 3 | /**\r | |
| 4 | * Validates an integer.\r | |
| 5 | * @note While this class was modeled off the CSS definition, no currently\r | |
| 6 | * allowed CSS uses this type. The properties that do are: widows,\r | |
| 7 | * orphans, z-index, counter-increment, counter-reset. Some of the\r | |
| 8 | * HTML attributes, however, find use for a non-negative version of this.\r | |
| 9 | */\r | |
| 10 | class HTMLPurifier_AttrDef_Integer extends HTMLPurifier_AttrDef\r | |
| 11 | {\r | |
| 12 | \r | |
| 13 | /**\r | |
| 14 | * Whether or not negative values are allowed.\r | |
| 15 | * @type bool\r | |
| 16 | */\r | |
| 17 | protected $negative = true;\r | |
| 18 | \r | |
| 19 | /**\r | |
| 20 | * Whether or not zero is allowed.\r | |
| 21 | * @type bool\r | |
| 22 | */\r | |
| 23 | protected $zero = true;\r | |
| 24 | \r | |
| 25 | /**\r | |
| 26 | * Whether or not positive values are allowed.\r | |
| 27 | * @type bool\r | |
| 28 | */\r | |
| 29 | protected $positive = true;\r | |
| 30 | \r | |
| 31 | /**\r | |
| 32 | * @param $negative Bool indicating whether or not negative values are allowed\r | |
| 33 | * @param $zero Bool indicating whether or not zero is allowed\r | |
| 34 | * @param $positive Bool indicating whether or not positive values are allowed\r | |
| 35 | */\r | |
| 36 | public function __construct($negative = true, $zero = true, $positive = true)\r | |
| 37 | {\r | |
| 38 | $this->negative = $negative;\r | |
| 39 | $this->zero = $zero;\r | |
| 40 | $this->positive = $positive;\r | |
| 41 | }\r | |
| 42 | \r | |
| 43 | /**\r | |
| 44 | * @param string $integer\r | |
| 45 | * @param HTMLPurifier_Config $config\r | |
| 46 | * @param HTMLPurifier_Context $context\r | |
| 47 | * @return bool|string\r | |
| 48 | */\r | |
| 49 | public function validate($integer, $config, $context)\r | |
| 50 | {\r | |
| 51 | $integer = $this->parseCDATA($integer);\r | |
| 52 | if ($integer === '') {\r | |
| 53 | return false;\r | |
| 54 | }\r | |
| 55 | \r | |
| 56 | // we could possibly simply typecast it to integer, but there are\r | |
| 57 | // certain fringe cases that must not return an integer.\r | |
| 58 | \r | |
| 59 | // clip leading sign\r | |
| 60 | if ($this->negative && $integer[0] === '-') {\r | |
| 61 | $digits = substr($integer, 1);\r | |
| 62 | if ($digits === '0') {\r | |
| 63 | $integer = '0';\r | |
| 64 | } // rm minus sign for zero\r | |
| 65 | } elseif ($this->positive && $integer[0] === '+') {\r | |
| 66 | $digits = $integer = substr($integer, 1); // rm unnecessary plus\r | |
| 67 | } else {\r | |
| 68 | $digits = $integer;\r | |
| 69 | }\r | |
| 70 | \r | |
| 71 | // test if it's numeric\r | |
| 72 | if (!ctype_digit($digits)) {\r | |
| 73 | return false;\r | |
| 74 | }\r | |
| 75 | \r | |
| 76 | // perform scope tests\r | |
| 77 | if (!$this->zero && $integer == 0) {\r | |
| 78 | return false;\r | |
| 79 | }\r | |
| 80 | if (!$this->positive && $integer > 0) {\r | |
| 81 | return false;\r | |
| 82 | }\r | |
| 83 | if (!$this->negative && $integer < 0) {\r | |
| 84 | return false;\r | |
| 85 | }\r | |
| 86 | \r | |
| 87 | return $integer;\r | |
| 88 | }\r | |
| 89 | }\r | |
| 90 | \r | |
| 91 | // vim: et sw=4 sts=4\r |