mirror of
https://github.com/renbaoshuo/S2OJ.git
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96d4a3ecf7
Due to historical reasons, the code is in subfolder "1". With SVN removal, we place the code back and remove the annoying "1" folder.
61 lines
1.9 KiB
PHP
61 lines
1.9 KiB
PHP
<?php
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/**
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* Processes an entire attribute array for corrections needing multiple values.
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*
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* Occasionally, a certain attribute will need to be removed and popped onto
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* another value. Instead of creating a complex return syntax for
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* HTMLPurifier_AttrDef, we just pass the whole attribute array to a
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* specialized object and have that do the special work. That is the
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* family of HTMLPurifier_AttrTransform.
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*
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* An attribute transformation can be assigned to run before or after
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* HTMLPurifier_AttrDef validation. See HTMLPurifier_HTMLDefinition for
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* more details.
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*/
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abstract class HTMLPurifier_AttrTransform
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{
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/**
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* Abstract: makes changes to the attributes dependent on multiple values.
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*
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* @param array $attr Assoc array of attributes, usually from
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* HTMLPurifier_Token_Tag::$attr
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* @param HTMLPurifier_Config $config Mandatory HTMLPurifier_Config object.
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* @param HTMLPurifier_Context $context Mandatory HTMLPurifier_Context object
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* @return array Processed attribute array.
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*/
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abstract public function transform($attr, $config, $context);
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/**
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* Prepends CSS properties to the style attribute, creating the
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* attribute if it doesn't exist.
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* @param array &$attr Attribute array to process (passed by reference)
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* @param string $css CSS to prepend
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*/
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public function prependCSS(&$attr, $css)
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{
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$attr['style'] = isset($attr['style']) ? $attr['style'] : '';
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$attr['style'] = $css . $attr['style'];
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}
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/**
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* Retrieves and removes an attribute
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* @param array &$attr Attribute array to process (passed by reference)
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* @param mixed $key Key of attribute to confiscate
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* @return mixed
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*/
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public function confiscateAttr(&$attr, $key)
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{
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if (!isset($attr[$key])) {
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return null;
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}
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$value = $attr[$key];
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unset($attr[$key]);
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return $value;
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}
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}
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// vim: et sw=4 sts=4
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