remove autoload section in composer.json

[github/wallabag/wallabag.git] / inc / 3rdparty / htmlpurifier / HTMLPurifier / AttrDef.php

<?php\r
\r
/**\r
 * Base class for all validating attribute definitions.\r
 *\r
 * This family of classes forms the core for not only HTML attribute validation,\r
 * but also any sort of string that needs to be validated or cleaned (which\r
 * means CSS properties and composite definitions are defined here too).\r
 * Besides defining (through code) what precisely makes the string valid,\r
 * subclasses are also responsible for cleaning the code if possible.\r
 */\r
\r
abstract class HTMLPurifier_AttrDef\r
{\r
\r
    /**\r
     * Tells us whether or not an HTML attribute is minimized.\r
     * Has no meaning in other contexts.\r
     * @type bool\r
     */\r
    public $minimized = false;\r
\r
    /**\r
     * Tells us whether or not an HTML attribute is required.\r
     * Has no meaning in other contexts\r
     * @type bool\r
     */\r
    public $required = false;\r
\r
    /**\r
     * Validates and cleans passed string according to a definition.\r
     *\r
     * @param string $string String to be validated and cleaned.\r
     * @param HTMLPurifier_Config $config Mandatory HTMLPurifier_Config object.\r
     * @param HTMLPurifier_Context $context Mandatory HTMLPurifier_Context object.\r
     */\r
    abstract public function validate($string, $config, $context);\r
\r
    /**\r
     * Convenience method that parses a string as if it were CDATA.\r
     *\r
     * This method process a string in the manner specified at\r
     * <http://www.w3.org/TR/html4/types.html#h-6.2> by removing\r
     * leading and trailing whitespace, ignoring line feeds, and replacing\r
     * carriage returns and tabs with spaces.  While most useful for HTML\r
     * attributes specified as CDATA, it can also be applied to most CSS\r
     * values.\r
     *\r
     * @note This method is not entirely standards compliant, as trim() removes\r
     *       more types of whitespace than specified in the spec. In practice,\r
     *       this is rarely a problem, as those extra characters usually have\r
     *       already been removed by HTMLPurifier_Encoder.\r
     *\r
     * @warning This processing is inconsistent with XML's whitespace handling\r
     *          as specified by section 3.3.3 and referenced XHTML 1.0 section\r
     *          4.7.  However, note that we are NOT necessarily\r
     *          parsing XML, thus, this behavior may still be correct. We\r
     *          assume that newlines have been normalized.\r
     */\r
    public function parseCDATA($string)\r
    {\r
        $string = trim($string);\r
        $string = str_replace(array("\n", "\t", "\r"), ' ', $string);\r
        return $string;\r
    }\r
\r
    /**\r
     * Factory method for creating this class from a string.\r
     * @param string $string String construction info\r
     * @return HTMLPurifier_AttrDef Created AttrDef object corresponding to $string\r
     */\r
    public function make($string)\r
    {\r
        // default implementation, return a flyweight of this object.\r
        // If $string has an effect on the returned object (i.e. you\r
        // need to overload this method), it is best\r
        // to clone or instantiate new copies. (Instantiation is safer.)\r
        return $this;\r
    }\r
\r
    /**\r
     * Removes spaces from rgb(0, 0, 0) so that shorthand CSS properties work\r
     * properly. THIS IS A HACK!\r
     * @param string $string a CSS colour definition\r
     * @return string\r
     */\r
    protected function mungeRgb($string)\r
    {\r
        return preg_replace('/rgb\((\d+)\s*,\s*(\d+)\s*,\s*(\d+)\)/', 'rgb(\1,\2,\3)', $string);\r
    }\r
\r
    /**\r
     * Parses a possibly escaped CSS string and returns the "pure"\r
     * version of it.\r
     */\r
    protected function expandCSSEscape($string)\r
    {\r
        // flexibly parse it\r
        $ret = '';\r
        for ($i = 0, $c = strlen($string); $i < $c; $i++) {\r
            if ($string[$i] === '\\') {\r
                $i++;\r
                if ($i >= $c) {\r
                    $ret .= '\\';\r
                    break;\r
                }\r
                if (ctype_xdigit($string[$i])) {\r
                    $code = $string[$i];\r
                    for ($a = 1, $i++; $i < $c && $a < 6; $i++, $a++) {\r
                        if (!ctype_xdigit($string[$i])) {\r
                            break;\r
                        }\r
                        $code .= $string[$i];\r
                    }\r
                    // We have to be extremely careful when adding\r
                    // new characters, to make sure we're not breaking\r
                    // the encoding.\r
                    $char = HTMLPurifier_Encoder::unichr(hexdec($code));\r
                    if (HTMLPurifier_Encoder::cleanUTF8($char) === '') {\r
                        continue;\r
                    }\r
                    $ret .= $char;\r
                    if ($i < $c && trim($string[$i]) !== '') {\r
                        $i--;\r
                    }\r
                    continue;\r
                }\r
                if ($string[$i] === "\n") {\r
                    continue;\r
                }\r
            }\r
            $ret .= $string[$i];\r
        }\r
        return $ret;\r
    }\r
}\r
\r
// vim: et sw=4 sts=4\r