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htmlpurifier/library/HTMLPurifier/AttrDef/Integer.php
2006-08-20 21:47:15 +00:00

47 lines
1.3 KiB
PHP

<?php
require_once 'HTMLPurifier/AttrDef.php';
/**
* Validates an integer.
* @note While this class was modeled off the CSS definition, no currently
* allowed CSS uses this type. The properties that do are: widows,
* orphans, z-index, counter-increment, counter-reset. Some of the
* HTML attributes, however, find use for a non-negative version of this.
*/
class HTMLPurifier_AttrDef_Integer extends HTMLPurifier_AttrDef
{
/**
* Bool indicating whether or not integers can only be positive.
*/
var $non_negative = false;
/**
* @param $non_negative bool indicating whether or not only positive
*/
function HTMLPurifier_AttrDef_Integer($non_negative = false) {
$this->non_negative = $non_negative;
}
function validate($integer, $config, &$context) {
$integer = $this->parseCDATA($integer);
if ($integer === '') return false;
if ( !$this->non_negative && $integer[0] === '-' ) {
$digits = substr($integer, 1);
} elseif( $integer[0] === '+' ) {
$digits = $integer = substr($integer, 1);
} else {
$digits = $integer;
}
if (!ctype_digit($digits)) return false;
return $integer;
}
}
?>