PHP Classes
elePHPant
Icontem

File: tests/runnable/HTMLPurifier/HTMLPurifier/AttrDef.php

Recommend this page to a friend!
Stumble It! Stumble It! Bookmark in del.icio.us Bookmark in del.icio.us
  Classes of jstar88  >  OPBE  >  tests/runnable/HTMLPurifier/HTMLPurifier/AttrDef.php  >  Download  
File: tests/runnable/HTMLPurifier/HTMLPurifier/AttrDef.php
Role: Auxiliary script
Content type: text/plain
Description: Auxiliary script
Class: OPBE
Ogame probabilistic battle engine
Author: By
Last change:
Date: 1 year ago
Size: 4,592 bytes
 

Contents

Class file image Download
<?php

/**
 * Base class for all validating attribute definitions.
 *
 * This family of classes forms the core for not only HTML attribute validation,
 * but also any sort of string that needs to be validated or cleaned (which
 * means CSS properties and composite definitions are defined here too).
 * Besides defining (through code) what precisely makes the string valid,
 * subclasses are also responsible for cleaning the code if possible.
 */

abstract class HTMLPurifier_AttrDef
{

   
/**
     * Tells us whether or not an HTML attribute is minimized. Has no
     * meaning in other contexts.
     */
   
public $minimized = false;

   
/**
     * Tells us whether or not an HTML attribute is required. Has no
     * meaning in other contexts
     */
   
public $required = false;

   
/**
     * Validates and cleans passed string according to a definition.
     *
     * @param $string String to be validated and cleaned.
     * @param $config Mandatory HTMLPurifier_Config object.
     * @param $context Mandatory HTMLPurifier_AttrContext object.
     */
   
abstract public function validate($string, $config, $context);

   
/**
     * Convenience method that parses a string as if it were CDATA.
     *
     * This method process a string in the manner specified at
     * <http://www.w3.org/TR/html4/types.html#h-6.2> by removing
     * leading and trailing whitespace, ignoring line feeds, and replacing
     * carriage returns and tabs with spaces. While most useful for HTML
     * attributes specified as CDATA, it can also be applied to most CSS
     * values.
     *
     * @note This method is not entirely standards compliant, as trim() removes
     * more types of whitespace than specified in the spec. In practice,
     * this is rarely a problem, as those extra characters usually have
     * already been removed by HTMLPurifier_Encoder.
     *
     * @warning This processing is inconsistent with XML's whitespace handling
     * as specified by section 3.3.3 and referenced XHTML 1.0 section
     * 4.7. However, note that we are NOT necessarily
     * parsing XML, thus, this behavior may still be correct. We
     * assume that newlines have been normalized.
     */
   
public function parseCDATA($string) {
       
$string = trim($string);
       
$string = str_replace(array("\n", "\t", "\r"), ' ', $string);
        return
$string;
    }

   
/**
     * Factory method for creating this class from a string.
     * @param $string String construction info
     * @return Created AttrDef object corresponding to $string
     */
   
public function make($string) {
       
// default implementation, return a flyweight of this object.
        // If $string has an effect on the returned object (i.e. you
        // need to overload this method), it is best
        // to clone or instantiate new copies. (Instantiation is safer.)
       
return $this;
    }

   
/**
     * Removes spaces from rgb(0, 0, 0) so that shorthand CSS properties work
     * properly. THIS IS A HACK!
     */
   
protected function mungeRgb($string) {
        return
preg_replace('/rgb\((\d+)\s*,\s*(\d+)\s*,\s*(\d+)\)/', 'rgb(\1,\2,\3)', $string);
    }

   
/**
     * Parses a possibly escaped CSS string and returns the "pure"
     * version of it.
     */
   
protected function expandCSSEscape($string) {
       
// flexibly parse it
       
$ret = '';
        for (
$i = 0, $c = strlen($string); $i < $c; $i++) {
            if (
$string[$i] === '\\') {
               
$i++;
                if (
$i >= $c) {
                   
$ret .= '\\';
                    break;
                }
                if (
ctype_xdigit($string[$i])) {
                   
$code = $string[$i];
                    for (
$a = 1, $i++; $i < $c && $a < 6; $i++, $a++) {
                        if (!
ctype_xdigit($string[$i])) break;
                       
$code .= $string[$i];
                    }
                   
// We have to be extremely careful when adding
                    // new characters, to make sure we're not breaking
                    // the encoding.
                   
$char = HTMLPurifier_Encoder::unichr(hexdec($code));
                    if (
HTMLPurifier_Encoder::cleanUTF8($char) === '') continue;
                   
$ret .= $char;
                    if (
$i < $c && trim($string[$i]) !== '') $i--;
                    continue;
                }
                if (
$string[$i] === "\n") continue;
            }
           
$ret .= $string[$i];
        }
        return
$ret;
    }

}

// vim: et sw=4 sts=4