mirror of
https://github.com/ezyang/htmlpurifier.git
synced 2024-12-23 08:51:53 +00:00
45 lines
1.0 KiB
PHP
45 lines
1.0 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
class HTMLPurifier_AttrDef_Number extends HTMLPurifier_AttrDef
|
||
|
|
{
|
||
|
|
|
||
|
|
function validate($number, $config, &$context) {
|
||
|
|
|
||
|
|
$number = $this->parseCDATA($number);
|
||
|
|
|
||
|
|
if ($number === '') return false;
|
||
|
|
|
||
|
|
$sign = '';
|
||
|
|
switch ($number[0]) {
|
||
|
|
case '-':
|
||
|
|
$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;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
?>
|