diff options
Diffstat (limited to 'lib/htmlpurifier/library/HTMLPurifier/PercentEncoder.php')
-rw-r--r-- | lib/htmlpurifier/library/HTMLPurifier/PercentEncoder.php | 98 |
1 files changed, 0 insertions, 98 deletions
diff --git a/lib/htmlpurifier/library/HTMLPurifier/PercentEncoder.php b/lib/htmlpurifier/library/HTMLPurifier/PercentEncoder.php deleted file mode 100644 index a43c44f4c..000000000 --- a/lib/htmlpurifier/library/HTMLPurifier/PercentEncoder.php +++ /dev/null @@ -1,98 +0,0 @@ -<?php - -/** - * Class that handles operations involving percent-encoding in URIs. - * - * @warning - * Be careful when reusing instances of PercentEncoder. The object - * you use for normalize() SHOULD NOT be used for encode(), or - * vice-versa. - */ -class HTMLPurifier_PercentEncoder -{ - - /** - * Reserved characters to preserve when using encode(). - */ - protected $preserve = array(); - - /** - * String of characters that should be preserved while using encode(). - */ - public function __construct($preserve = false) { - // unreserved letters, ought to const-ify - for ($i = 48; $i <= 57; $i++) $this->preserve[$i] = true; // digits - for ($i = 65; $i <= 90; $i++) $this->preserve[$i] = true; // upper-case - for ($i = 97; $i <= 122; $i++) $this->preserve[$i] = true; // lower-case - $this->preserve[45] = true; // Dash - - $this->preserve[46] = true; // Period . - $this->preserve[95] = true; // Underscore _ - $this->preserve[126]= true; // Tilde ~ - - // extra letters not to escape - if ($preserve !== false) { - for ($i = 0, $c = strlen($preserve); $i < $c; $i++) { - $this->preserve[ord($preserve[$i])] = true; - } - } - } - - /** - * Our replacement for urlencode, it encodes all non-reserved characters, - * as well as any extra characters that were instructed to be preserved. - * @note - * Assumes that the string has already been normalized, making any - * and all percent escape sequences valid. Percents will not be - * re-escaped, regardless of their status in $preserve - * @param $string String to be encoded - * @return Encoded string. - */ - public function encode($string) { - $ret = ''; - for ($i = 0, $c = strlen($string); $i < $c; $i++) { - if ($string[$i] !== '%' && !isset($this->preserve[$int = ord($string[$i])]) ) { - $ret .= '%' . sprintf('%02X', $int); - } else { - $ret .= $string[$i]; - } - } - return $ret; - } - - /** - * Fix up percent-encoding by decoding unreserved characters and normalizing. - * @warning This function is affected by $preserve, even though the - * usual desired behavior is for this not to preserve those - * characters. Be careful when reusing instances of PercentEncoder! - * @param $string String to normalize - */ - public function normalize($string) { - if ($string == '') return ''; - $parts = explode('%', $string); - $ret = array_shift($parts); - foreach ($parts as $part) { - $length = strlen($part); - if ($length < 2) { - $ret .= '%25' . $part; - continue; - } - $encoding = substr($part, 0, 2); - $text = substr($part, 2); - if (!ctype_xdigit($encoding)) { - $ret .= '%25' . $part; - continue; - } - $int = hexdec($encoding); - if (isset($this->preserve[$int])) { - $ret .= chr($int) . $text; - continue; - } - $encoding = strtoupper($encoding); - $ret .= '%' . $encoding . $text; - } - return $ret; - } - -} - -// vim: et sw=4 sts=4 |