mirror of
https://github.com/renbaoshuo/S2OJ.git
synced 2024-11-23 14:58:41 +00:00
61 lines
1.9 KiB
PHP
61 lines
1.9 KiB
PHP
|
<?php
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Processes an entire attribute array for corrections needing multiple values.
|
||
|
|
*
|
||
|
|
* Occasionally, a certain attribute will need to be removed and popped onto
|
||
|
|
* another value. Instead of creating a complex return syntax for
|
||
|
|
* HTMLPurifier_AttrDef, we just pass the whole attribute array to a
|
||
|
|
* specialized object and have that do the special work. That is the
|
||
|
|
* family of HTMLPurifier_AttrTransform.
|
||
|
|
*
|
||
|
|
* An attribute transformation can be assigned to run before or after
|
||
|
|
* HTMLPurifier_AttrDef validation. See HTMLPurifier_HTMLDefinition for
|
||
|
|
* more details.
|
||
|
|
*/
|
||
|
|
|
||
|
|
abstract class HTMLPurifier_AttrTransform
|
||
|
|
{
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Abstract: makes changes to the attributes dependent on multiple values.
|
||
|
|
*
|
||
|
|
* @param array $attr Assoc array of attributes, usually from
|
||
|
|
* HTMLPurifier_Token_Tag::$attr
|
||
|
|
* @param HTMLPurifier_Config $config Mandatory HTMLPurifier_Config object.
|
||
|
|
* @param HTMLPurifier_Context $context Mandatory HTMLPurifier_Context object
|
||
|
|
* @return array Processed attribute array.
|
||
|
|
*/
|
||
|
|
abstract public function transform($attr, $config, $context);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Prepends CSS properties to the style attribute, creating the
|
||
|
|
* attribute if it doesn't exist.
|
||
|
|
* @param array &$attr Attribute array to process (passed by reference)
|
||
|
|
* @param string $css CSS to prepend
|
||
|
|
*/
|
||
|
|
public function prependCSS(&$attr, $css)
|
||
|
|
{
|
||
|
|
$attr['style'] = isset($attr['style']) ? $attr['style'] : '';
|
||
|
|
$attr['style'] = $css . $attr['style'];
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Retrieves and removes an attribute
|
||
|
|
* @param array &$attr Attribute array to process (passed by reference)
|
||
|
|
* @param mixed $key Key of attribute to confiscate
|
||
|
|
* @return mixed
|
||
|
|
*/
|
||
|
|
public function confiscateAttr(&$attr, $key)
|
||
|
|
{
|
||
|
|
if (!isset($attr[$key])) {
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
$value = $attr[$key];
|
||
|
|
unset($attr[$key]);
|
||
|
|
return $value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
// vim: et sw=4 sts=4
|