HTMLPurifier_AttrDef_HTML_Nmtokens Class Reference

Validates contents based on NMTOKENS attribute type. More...

Inheritance diagram for HTMLPurifier_AttrDef_HTML_Nmtokens:

Collaboration diagram for HTMLPurifier_AttrDef_HTML_Nmtokens:

Public Member Functions
	validate ($string, $config, $context)
	Validates and cleans passed string according to a definition.
Public Member Functions inherited from HTMLPurifier_AttrDef
	parseCDATA ($string)
	Convenience method that parses a string as if it were CDATA.
	make ($string)
	Factory method for creating this class from a string.

Protected Member Functions
	split ($string, $config, $context)
	Splits a space separated list of tokens into its constituent parts.
	filter ($tokens, $config, $context)
	Template method for removing certain tokens based on arbitrary criteria.
Protected Member Functions inherited from HTMLPurifier_AttrDef
	mungeRgb ($string)
	Removes spaces from rgb(0, 0, 0) so that shorthand CSS properties work properly.
	expandCSSEscape ($string)
	Parses a possibly escaped CSS string and returns the "pure" version of it.

Additional Inherited Members
Data Fields inherited from HTMLPurifier_AttrDef
	$minimized = false
	Tells us whether or not an HTML attribute is minimized.
	$required = false
	Tells us whether or not an HTML attribute is required.

Detailed Description

Validates contents based on NMTOKENS attribute type.

Definition at line 6 of file Nmtokens.php.

Member Function Documentation

HTMLPurifier_AttrDef_HTML_Nmtokens::filter (   $tokens,   $config,   $context  )

protected

Template method for removing certain tokens based on arbitrary criteria.

Note

If we wanted to be really functional, we'd do an array_filter with a callback. But... we're not.

Reimplemented in HTMLPurifier_AttrDef_HTML_Class.

Definition at line 46 of file Nmtokens.php.

Referenced by validate().

                                                          {
        return $tokens;
    }

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HTMLPurifier_AttrDef_HTML_Nmtokens::split (   $string,   $config,   $context  )

protected

Splits a space separated list of tokens into its constituent parts.

Reimplemented in HTMLPurifier_AttrDef_HTML_Class.

Definition at line 26 of file Nmtokens.php.

Referenced by validate().

                                                         {
        // OPTIMIZABLE!
        // do the preg_match, capture all subpatterns for reformulation

        // we don't support U+00A1 and up codepoints or
        // escaping because I don't know how to do that with regexps
        // and plus it would complicate optimization efforts (you never
        // see that anyway).
        $pattern = '/(?:(?<=\s)|\A)'. // look behind for space or string start
                   '((?:--|-?[A-Za-z_])[A-Za-z_\-0-9]*)'.
                   '(?:(?=\s)|\z)/'; // look ahead for space or string end
        preg_match_all($pattern, $string, $matches);
        return $matches[1];
    }

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HTMLPurifier_AttrDef_HTML_Nmtokens::validate	(		$string,
			$config,
			$context
	)

Validates and cleans passed string according to a definition.

Parameters

$string	String to be validated and cleaned.
$config	Mandatory HTMLPurifier_Config object.
$context	Mandatory HTMLPurifier_AttrContext object.

Reimplemented from HTMLPurifier_AttrDef.

Definition at line 9 of file Nmtokens.php.

References filter(), and split().

                                                         {

        $string = trim($string);

        // early abort: '' and '0' (strings that convert to false) are invalid
        if (!$string) return false;

        $tokens = $this->split($string, $config, $context);
        $tokens = $this->filter($tokens, $config, $context);
        if (empty($tokens)) return false;
        return implode(' ', $tokens);

    }

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

• Services/Html/HtmlPurifier/library/HTMLPurifier/AttrDef/HTML/Nmtokens.php