4
* Validates a number as defined by the CSS spec.
6
class HTMLPurifier_AttrDef_CSS_Number extends HTMLPurifier_AttrDef
10
* Bool indicating whether or not only positive values allowed.
12
protected $non_negative = false;
15
* @param $non_negative Bool indicating whether negatives are forbidden
17
public function __construct($non_negative = false) {
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$this->non_negative = $non_negative;
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* @warning Some contexts do not pass $config, $context. These
23
* variables should not be used without checking HTMLPurifier_Length
25
public function validate($number, $config, $context) {
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$number = $this->parseCDATA($number);
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if ($number === '') return false;
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if ($number === '0') return '0';
35
if ($this->non_negative) return false;
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$number = substr($number, 1);
41
if (ctype_digit($number)) {
42
$number = ltrim($number, '0');
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return $number ? $sign . $number : '0';
46
// Period is the only non-numeric character allowed
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if (strpos($number, '.') === false) return false;
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list($left, $right) = explode('.', $number, 2);
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if ($left === '' && $right === '') return false;
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if ($left !== '' && !ctype_digit($left)) return false;
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$left = ltrim($left, '0');
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$right = rtrim($right, '0');
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return $left ? $sign . $left : '0';
59
} elseif (!ctype_digit($right)) {
63
return $sign . $left . '.' . $right;
4
* Validates a number as defined by the CSS spec.
6
class HTMLPurifier_AttrDef_CSS_Number extends HTMLPurifier_AttrDef
10
* Indicates whether or not only positive values are allowed.
13
protected $non_negative = false;
16
* @param bool $non_negative indicates whether negatives are forbidden
18
public function __construct($non_negative = false)
20
$this->non_negative = $non_negative;
24
* @param string $number
25
* @param HTMLPurifier_Config $config
26
* @param HTMLPurifier_Context $context
28
* @warning Some contexts do not pass $config, $context. These
29
* variables should not be used without checking HTMLPurifier_Length
31
public function validate($number, $config, $context)
33
$number = $this->parseCDATA($number);
38
if ($number === '0') {
45
if ($this->non_negative) {
50
$number = substr($number, 1);
53
if (ctype_digit($number)) {
54
$number = ltrim($number, '0');
55
return $number ? $sign . $number : '0';
58
// Period is the only non-numeric character allowed
59
if (strpos($number, '.') === false) {
63
list($left, $right) = explode('.', $number, 2);
65
if ($left === '' && $right === '') {
68
if ($left !== '' && !ctype_digit($left)) {
72
$left = ltrim($left, '0');
73
$right = rtrim($right, '0');
76
return $left ? $sign . $left : '0';
77
} elseif (!ctype_digit($right)) {
80
return $sign . $left . '.' . $right;