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Add CSSLength support, and roll out to all applicable styles.

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git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@237 48356398-32a2-884e-a903-53898d9a118a
This commit is contained in:
Edward Z. Yang
2006-08-13 23:08:38 +00:00
parent ff7fdaca38
commit b5ff592157
8 changed files with 125 additions and 4 deletions
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40
library/HTMLPurifier/AttrDef/CSSLength.php Normal file
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@@ -0,0 +1,40 @@
<?php
require_once 'HTMLPurifier/AttrDef.php';
require_once 'HTMLPurifier/AttrDef/Number.php';
class HTMLPurifier_AttrDef_CSSLength extends HTMLPurifier_AttrDef
{
var $units = array('em' => true, 'ex' => true, 'px' => true, 'in' => true,
'cm' => true, 'mm' => true, 'pt' => true, 'pc' => true);
var $number_def;
function HTMLPurifier_AttrDef_CSSLength($non_negative = false) {
$this->number_def = new HTMLPurifier_AttrDef_Number($non_negative);
}
function validate($length, $config, &$context) {
$length = $this->parseCDATA($length);
if ($length === '') return false;
if ($length === '0') return '0';
$strlen = strlen($length);
if ($strlen === 1) return false; // impossible!
// we assume all units are two characters
$unit = substr($length, $strlen - 2);
$number = substr($length, 0, $strlen - 2);
if (!isset($this->units[$unit])) return false;
$number = $this->number_def->validate($number, $config, $context);
if ($number === false) return false;
return $number . $unit;
}
}
?>

7
library/HTMLPurifier/AttrDef/Number.php
View File

@@ -3,6 +3,12 @@
class HTMLPurifier_AttrDef_Number extends HTMLPurifier_AttrDef
{
var $non_negative = false;
function HTMLPurifier_AttrDef_Number($non_negative = false) {
$this->non_negative = $non_negative;
}
function validate($number, $config, &$context) {
$number = $this->parseCDATA($number);
@@ -12,6 +18,7 @@ class HTMLPurifier_AttrDef_Number extends HTMLPurifier_AttrDef
$sign = '';
switch ($number[0]) {
case '-':
if ($this->non_negative) return false;
$sign = '-';
case '+':
$number = substr($number, 1);