HTMLPurifier_HTMLModule_Tidy Class Reference

Abstract class for a set of proprietary modules that clean up (tidy) poorly written HTML. More...

Inheritance diagram for HTMLPurifier_HTMLModule_Tidy:

Collaboration diagram for HTMLPurifier_HTMLModule_Tidy:

Public Member Functions
	setup ($config)
	Lazy load constructs the module by determining the necessary fixes to create and then delegating to the populate() function.
	getFixesForLevel ($level)
	Retrieves all fixes per a level, returning fixes for that specific level as well as all levels below it.
	makeFixesForLevel ($fixes)
	Dynamically populates the $fixesForLevel member variable using the fixes array.
	populate ($fixes)
	Populates the module with transforms and other special-case code based on a list of fixes passed to it.
	getFixType ($name)
	Parses a fix name and determines what kind of fix it is, as well as other information defined by the fix.
	makeFixes ()
	Defines all fixes the module will perform in a compact associative array of fix name to fix implementation.
Public Member Functions inherited from HTMLPurifier_HTMLModule
	getChildDef ($def)
	Retrieves a proper HTMLPurifier_ChildDef subclass based on content_model and content_model_type member variables of the HTMLPurifier_ElementDef class.
	addElement ($element, $type, $contents, $attr_includes=array(), $attr=array())
	Convenience function that sets up a new element.
	addBlankElement ($element)
	Convenience function that creates a totally blank, non-standalone element.
	addElementToContentSet ($element, $type)
	Convenience function that registers an element to a content set.
	parseContents ($contents)
	Convenience function that transforms single-string contents into separate content model and content model type.
	mergeInAttrIncludes (&$attr, $attr_includes)
	Convenience function that merges a list of attribute includes into an attribute array.
	makeLookup ($list)
	Convenience function that generates a lookup table with boolean true as value.

Data Fields
	$levels = array(0 => 'none', 'light', 'medium', 'heavy')
	List of supported levels.
	$defaultLevel = null
	Default level to place all fixes in.
	$fixesForLevel
	Lists of fixes used by getFixesForLevel().
Data Fields inherited from HTMLPurifier_HTMLModule
	$name
	Short unique string identifier of the module.
	$elements = array()
	Informally, a list of elements this module changes.
	$info = array()
	Associative array of element names to element definitions.
	$content_sets = array()
	Associative array of content set names to content set additions.
	$attr_collections = array()
	Associative array of attribute collection names to attribute collection additions.
	$info_tag_transform = array()
	Associative array of deprecated tag name to HTMLPurifier_TagTransform.
	$info_attr_transform_pre = array()
	List of HTMLPurifier_AttrTransform to be performed before validation.
	$info_attr_transform_post = array()
	List of HTMLPurifier_AttrTransform to be performed after validation.
	$info_injector = array()
	List of HTMLPurifier_Injector to be performed during well-formedness fixing.
	$defines_child_def = false
	Boolean flag that indicates whether or not getChildDef is implemented.
	$safe = true
	Boolean flag whether or not this module is safe.

Detailed Description

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

Definition at line 8 of file Tidy.php.

Member Function Documentation

HTMLPurifier_HTMLModule_Tidy::getFixesForLevel

(

$level

)

Retrieves all fixes per a level, returning fixes for that specific level as well as all levels below it.

Parameters

$level

String level identifier, see $levels for valid values

Returns

Lookup up table of fixes

Definition at line 73 of file Tidy.php.

References $ret.

Referenced by setup().

                                             {
        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;
    }

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HTMLPurifier_HTMLModule_Tidy::getFixType

(

$name

)

Parses a fix name and determines what kind of fix it is, as well as other information defined by the fix.

Parameters

$name

String name of fix

Returns

array(string $fix_type, array $fix_parameters)

Note

$fix_parameters is type dependant, see populate() for usage of these parameters

Definition at line 172 of file Tidy.php.

References HTMLPurifier_HTMLModule\$name.

Referenced by populate().

                                      {
        // 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);

    }

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HTMLPurifier_HTMLModule_Tidy::makeFixes

(

)

Defines all fixes the module will perform in a compact associative array of fix name to fix implementation.

Reimplemented in HTMLPurifier_HTMLModule_Tidy_Name, HTMLPurifier_HTMLModule_Tidy_Proprietary, HTMLPurifier_HTMLModule_Tidy_XHTML, HTMLPurifier_HTMLModule_Tidy_Strict, and HTMLPurifier_HTMLModule_Tidy_XHTMLAndHTML4.

Definition at line 203 of file Tidy.php.

Referenced by setup().

{}

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HTMLPurifier_HTMLModule_Tidy::makeFixesForLevel

(

$fixes

)

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.

Definition at line 103 of file Tidy.php.

References $defaultLevel.

Referenced by setup().

                                              {
        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);
    }

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HTMLPurifier_HTMLModule_Tidy::populate

(

$fixes

)

Populates the module with transforms and other special-case code based on a list of fixes passed to it.

Parameters

$lookup

Lookup table of fixes to activate

Definition at line 120 of file Tidy.php.

References HTMLPurifier_HTMLModule\$name, HTMLPurifier_HTMLModule\addBlankElement(), and getFixType().

Referenced by setup().

                                     {
        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;
            }
        }
    }

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HTMLPurifier_HTMLModule_Tidy::setup

(

$config

)

Lazy load constructs the module by determining the necessary fixes to create and then delegating to the populate() function.

Todo:

Wildcard matching and error reporting when an added or subtracted fix has no effect.

Reimplemented from HTMLPurifier_HTMLModule.

Definition at line 38 of file Tidy.php.

References HTMLPurifier_HTMLModule\$name, getFixesForLevel(), makeFixes(), makeFixesForLevel(), and populate().

                                   {

        // 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);

    }

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Field Documentation

HTMLPurifier_HTMLModule_Tidy::$defaultLevel = null

Default level to place all fixes in.

Disabled by default

Definition at line 20 of file Tidy.php.

Referenced by makeFixesForLevel().

HTMLPurifier_HTMLModule_Tidy::$fixesForLevel

Initial value:

 array(
        'light'  => array(),
        'medium' => array(),
        'heavy'  => array()
    )

Lists of fixes used by getFixesForLevel().

Format is: HTMLModule_Tidy->fixesForLevel[$level] = array('fix-1', 'fix-2');

Definition at line 26 of file Tidy.php.

HTMLPurifier_HTMLModule_Tidy::$levels = array(0 => 'none', 'light', 'medium', 'heavy')

List of supported levels.

Index zero is a special case "no fixes" level.

Definition at line 15 of file Tidy.php.

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The documentation for this class was generated from the following file:

• Services/Html/HtmlPurifier/library/HTMLPurifier/HTMLModule/Tidy.php