$name
$name
Short unique string identifier of the module.
Abstract class for a set of proprietary modules that clean up (tidy) poorly written HTML.
$attr_collections
Associative array of attribute collection names to attribute collection additions. More rarely used for adding attributes to the global collections. Example is the StyleAttribute module adding the style attribute to the Core. Corresponds to HTMLDefinition's attr_collections->info, since the object's data is only info, with extra behavior associated with it.
$safe
Boolean flag whether or not this module is safe. If it is not safe, all of its members are unsafe. Modules are safe by default (this might be slightly dangerous, but it doesn't make much sense to force HTML Purifier, which is based off of safe HTML, to explicitly say, "This is safe," even though there are modules which are "unsafe")
getChildDef(\HTMLPurifier_ElementDef $def) : \HTMLPurifier_ChildDef
Retrieves a proper HTMLPurifier_ChildDef subclass based on content_model and content_model_type member variables of the HTMLPurifier_ElementDef class. There is a similar function in HTMLPurifier_HTMLDefinition.
| \HTMLPurifier_ElementDef | $def |
subclass
addElement(string $element, string|bool $type, string|\HTMLPurifier_ChildDef $contents, array|string $attr_includes = array(), array $attr = array()) : \HTMLPurifier_ElementDef
Convenience function that sets up a new element
| string | $element | Name of element to add |
| string|bool | $type | What content set should element be registered to? Set as false to skip this step. |
| string|\HTMLPurifier_ChildDef | $contents | Allowed children in form of: "$content_model_type: $content_model" |
| array|string | $attr_includes | What attribute collections to register to element? |
| array | $attr | What unique attributes does the element define? |
Created element definition object, so you can set advanced parameters
addElementToContentSet(string $element, string $type) : mixed
Convenience function that registers an element to a content set
| string | $element | Element to register |
| string | $type | Name content set (warning: case sensitive, usually upper-case first letter) |
mergeInAttrIncludes(array $attr, array $attr_includes) : mixed
Convenience function that merges a list of attribute includes into an attribute array.
| array | $attr | Reference to attr array to modify |
| array | $attr_includes | Array of includes / string include to merge in |
<?php
/**
* Abstract class for a set of proprietary modules that clean up (tidy)
* poorly written HTML.
* @todo Figure out how to protect some of these methods/properties
*/
class HTMLPurifier_HTMLModule_Tidy extends HTMLPurifier_HTMLModule
{
/**
* List of supported levels.
* Index zero is a special case "no fixes" level.
* @type array
*/
public $levels = array(0 => 'none', 'light', 'medium', 'heavy');
/**
* Default level to place all fixes in.
* Disabled by default.
* @type string
*/
public $defaultLevel = null;
/**
* Lists of fixes used by getFixesForLevel().
* Format is:
* HTMLModule_Tidy->fixesForLevel[$level] = array('fix-1', 'fix-2');
* @type array
*/
public $fixesForLevel = array(
'light' => array(),
'medium' => array(),
'heavy' => array()
);
/**
* Lazy load constructs the module by determining the necessary
* fixes to create and then delegating to the populate() function.
* @param HTMLPurifier_Config $config
* @todo Wildcard matching and error reporting when an added or
* subtracted fix has no effect.
*/
public function setup($config)
{
// create fixes, initialize fixesForLevel
$fixes = $this->makeFixes();
$this->makeFixesForLevel($fixes);
// figure out which fixes to use
$level = $config->get('HTML.TidyLevel');
$fixes_lookup = $this->getFixesForLevel($level);
// get custom fix declarations: these need namespace processing
$add_fixes = $config->get('HTML.TidyAdd');
$remove_fixes = $config->get('HTML.TidyRemove');
foreach ($fixes as $name => $fix) {
// needs to be refactored a little to implement globbing
if (isset($remove_fixes[$name]) ||
(!isset($add_fixes[$name]) && !isset($fixes_lookup[$name]))) {
unset($fixes[$name]);
}
}
// populate this module with necessary fixes
$this->populate($fixes);
}
/**
* Retrieves all fixes per a level, returning fixes for that specific
* level as well as all levels below it.
* @param string $level level identifier, see $levels for valid values
* @return array Lookup up table of fixes
*/
public function getFixesForLevel($level)
{
if ($level == $this->levels[0]) {
return array();
}
$activated_levels = array();
for ($i = 1, $c = count($this->levels); $i < $c; $i++) {
$activated_levels[] = $this->levels[$i];
if ($this->levels[$i] == $level) {
break;
}
}
if ($i == $c) {
trigger_error(
'Tidy level ' . htmlspecialchars($level) . ' not recognized',
E_USER_WARNING
);
return array();
}
$ret = array();
foreach ($activated_levels as $level) {
foreach ($this->fixesForLevel[$level] as $fix) {
$ret[$fix] = true;
}
}
return $ret;
}
/**
* Dynamically populates the $fixesForLevel member variable using
* the fixes array. It may be custom overloaded, used in conjunction
* with $defaultLevel, or not used at all.
* @param array $fixes
*/
public function makeFixesForLevel($fixes)
{
if (!isset($this->defaultLevel)) {
return;
}
if (!isset($this->fixesForLevel[$this->defaultLevel])) {
trigger_error(
'Default level ' . $this->defaultLevel . ' does not exist',
E_USER_ERROR
);
return;
}
$this->fixesForLevel[$this->defaultLevel] = array_keys($fixes);
}
/**
* Populates the module with transforms and other special-case code
* based on a list of fixes passed to it
* @param array $fixes Lookup table of fixes to activate
*/
public function populate($fixes)
{
foreach ($fixes as $name => $fix) {
// determine what the fix is for
list($type, $params) = $this->getFixType($name);
switch ($type) {
case 'attr_transform_pre':
case 'attr_transform_post':
$attr = $params['attr'];
if (isset($params['element'])) {
$element = $params['element'];
if (empty($this->info[$element])) {
$e = $this->addBlankElement($element);
} else {
$e = $this->info[$element];
}
} else {
$type = "info_$type";
$e = $this;
}
// PHP does some weird parsing when I do
// $e->$type[$attr], so I have to assign a ref.
$f =& $e->$type;
$f[$attr] = $fix;
break;
case 'tag_transform':
$this->info_tag_transform[$params['element']] = $fix;
break;
case 'child':
case 'content_model_type':
$element = $params['element'];
if (empty($this->info[$element])) {
$e = $this->addBlankElement($element);
} else {
$e = $this->info[$element];
}
$e->$type = $fix;
break;
default:
trigger_error("Fix type $type not supported", E_USER_ERROR);
break;
}
}
}
/**
* Parses a fix name and determines what kind of fix it is, as well
* as other information defined by the fix
* @param $name String name of fix
* @return array(string $fix_type, array $fix_parameters)
* @note $fix_parameters is type dependant, see populate() for usage
* of these parameters
*/
public function getFixType($name)
{
// parse it
$property = $attr = null;
if (strpos($name, '#') !== false) {
list($name, $property) = explode('#', $name);
}
if (strpos($name, '@') !== false) {
list($name, $attr) = explode('@', $name);
}
// figure out the parameters
$params = array();
if ($name !== '') {
$params['element'] = $name;
}
if (!is_null($attr)) {
$params['attr'] = $attr;
}
// special case: attribute transform
if (!is_null($attr)) {
if (is_null($property)) {
$property = 'pre';
}
$type = 'attr_transform_' . $property;
return array($type, $params);
}
// special case: tag transform
if (is_null($property)) {
return array('tag_transform', $params);
}
return array($property, $params);
}
/**
* Defines all fixes the module will perform in a compact
* associative array of fix name to fix implementation.
* @return array
*/
public function makeFixes()
{
}
}
// vim: et sw=4 sts=4