mirror of
https://github.com/renbaoshuo/S2OJ.git
synced 2024-11-30 12:26:20 +00:00
72 lines
2.0 KiB
PHP
72 lines
2.0 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Framework class for strings that involve multiple values.
|
||
|
|
*
|
||
|
|
* Certain CSS properties such as border-width and margin allow multiple
|
||
|
|
* lengths to be specified. This class can take a vanilla border-width
|
||
|
|
* definition and multiply it, usually into a max of four.
|
||
|
|
*
|
||
|
|
* @note Even though the CSS specification isn't clear about it, inherit
|
||
|
|
* can only be used alone: it will never manifest as part of a multi
|
||
|
|
* shorthand declaration. Thus, this class does not allow inherit.
|
||
|
|
*/
|
||
|
|
class HTMLPurifier_AttrDef_CSS_Multiple extends HTMLPurifier_AttrDef
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* Instance of component definition to defer validation to.
|
||
|
|
* @type HTMLPurifier_AttrDef
|
||
|
|
* @todo Make protected
|
||
|
|
*/
|
||
|
|
public $single;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Max number of values allowed.
|
||
|
|
* @todo Make protected
|
||
|
|
*/
|
||
|
|
public $max;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param HTMLPurifier_AttrDef $single HTMLPurifier_AttrDef to multiply
|
||
|
|
* @param int $max Max number of values allowed (usually four)
|
||
|
|
*/
|
||
|
|
public function __construct($single, $max = 4)
|
||
|
|
{
|
||
|
|
$this->single = $single;
|
||
|
|
$this->max = $max;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @param string $string
|
||
|
|
* @param HTMLPurifier_Config $config
|
||
|
|
* @param HTMLPurifier_Context $context
|
||
|
|
* @return bool|string
|
||
|
|
*/
|
||
|
|
public function validate($string, $config, $context)
|
||
|
|
{
|
||
|
|
$string = $this->parseCDATA($string);
|
||
|
|
if ($string === '') {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
$parts = explode(' ', $string); // parseCDATA replaced \r, \t and \n
|
||
|
|
$length = count($parts);
|
||
|
|
$final = '';
|
||
|
|
for ($i = 0, $num = 0; $i < $length && $num < $this->max; $i++) {
|
||
|
|
if (ctype_space($parts[$i])) {
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
$result = $this->single->validate($parts[$i], $config, $context);
|
||
|
|
if ($result !== false) {
|
||
|
|
$final .= $result . ' ';
|
||
|
|
$num++;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($final === '') {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return rtrim($final);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// vim: et sw=4 sts=4
|