mirror of
https://github.com/ezyang/htmlpurifier.git
synced 2024-11-08 23:08:42 +00:00
314a48373c
git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@308 48356398-32a2-884e-a903-53898d9a118a
61 lines
1.5 KiB
PHP
61 lines
1.5 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Validates a number as defined by the CSS spec.
|
|
*/
|
|
class HTMLPurifier_AttrDef_Number extends HTMLPurifier_AttrDef
|
|
{
|
|
|
|
/**
|
|
* Bool indicating whether or not only positive values allowed.
|
|
*/
|
|
var $non_negative = false;
|
|
|
|
/**
|
|
* @param $non_negative Bool indicating whether negatives are forbidden
|
|
*/
|
|
function HTMLPurifier_AttrDef_Number($non_negative = false) {
|
|
$this->non_negative = $non_negative;
|
|
}
|
|
|
|
function validate($number, $config, &$context) {
|
|
|
|
$number = $this->parseCDATA($number);
|
|
|
|
if ($number === '') return false;
|
|
|
|
$sign = '';
|
|
switch ($number[0]) {
|
|
case '-':
|
|
if ($this->non_negative) return false;
|
|
$sign = '-';
|
|
case '+':
|
|
$number = substr($number, 1);
|
|
}
|
|
|
|
if (ctype_digit($number)) {
|
|
$number = ltrim($number, '0');
|
|
return $number ? $sign . $number : '0';
|
|
}
|
|
if (!strpos($number, '.')) return false;
|
|
|
|
list($left, $right) = explode('.', $number, 2);
|
|
|
|
if (!ctype_digit($left)) return false;
|
|
$left = ltrim($left, '0');
|
|
|
|
$right = rtrim($right, '0');
|
|
|
|
if ($right === '') {
|
|
return $left ? $sign . $left : '0';
|
|
} elseif (!ctype_digit($right)) {
|
|
return false;
|
|
}
|
|
|
|
return $sign . $left . '.' . $right;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
?>
|