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<?php
class HTMLPurifier_DoctypeRegistry
{
/**
* Hash of doctype names to doctype objects
*/
protected $doctypes;
/**
* Lookup table of aliases to real doctype names
*/
protected $aliases;
/**
* Registers a doctype to the registry
* @note Accepts a fully-formed doctype object, or the
* parameters for constructing a doctype object
* @param $doctype Name of doctype or literal doctype object
* @param $modules Modules doctype will load
* @param $modules_for_modes Modules doctype will load for certain modes
* @param $aliases Alias names for doctype
* @return Editable registered doctype
*/
public function register($doctype, $xml = true, $modules = array(),
$tidy_modules = array(), $aliases = array(), $dtd_public = null, $dtd_system = null
) {
if (!is_array($modules)) $modules = array($modules);
if (!is_array($tidy_modules)) $tidy_modules = array($tidy_modules);
if (!is_array($aliases)) $aliases = array($aliases);
if (!is_object($doctype)) {
$doctype = new HTMLPurifier_Doctype(
$doctype, $xml, $modules, $tidy_modules, $aliases, $dtd_public, $dtd_system
);
}
$this->doctypes[$doctype->name] = $doctype;
$name = $doctype->name;
// hookup aliases
foreach ($doctype->aliases as $alias) {
if (isset($this->doctypes[$alias])) continue;
$this->aliases[$alias] = $name;
}
// remove old aliases
if (isset($this->aliases[$name])) unset($this->aliases[$name]);
return $doctype;
}
/**
* Retrieves reference to a doctype of a certain name
* @note This function resolves aliases
* @note When possible, use the more fully-featured make()
* @param $doctype Name of doctype
* @return Editable doctype object
*/
public function get($doctype) {
if (isset($this->aliases[$doctype])) $doctype = $this->aliases[$doctype];
if (!isset($this->doctypes[$doctype])) {
trigger_error('Doctype ' . htmlspecialchars($doctype) . ' does not exist', E_USER_ERROR);
$anon = new HTMLPurifier_Doctype($doctype);
return $anon;
}
return $this->doctypes[$doctype];
}
/**
* Creates a doctype based on a configuration object,
* will perform initialization on the doctype
* @note Use this function to get a copy of doctype that config
* can hold on to (this is necessary in order to tell
* Generator whether or not the current document is XML
* based or not).
*/
public function make($config) {
return clone $this->get($this->getDoctypeFromConfig($config));
}
/**
* Retrieves the doctype from the configuration object
*/
public function getDoctypeFromConfig($config) {
// recommended test
$doctype = $config->get('HTML.Doctype');
if (!empty($doctype)) return $doctype;
$doctype = $config->get('HTML.CustomDoctype');
if (!empty($doctype)) return $doctype;
// backwards-compatibility
if ($config->get('HTML.XHTML')) {
$doctype = 'XHTML 1.0';
} else {
$doctype = 'HTML 4.01';
}
if ($config->get('HTML.Strict')) {
$doctype .= ' Strict';
} else {
$doctype .= ' Transitional';
}
return $doctype;
}
}
// vim: et sw=4 sts=4