| | |
| | | /** |
| | | * Catch an error and throw an exception. |
| | | * |
| | | * @param int Level of the error |
| | | * @param string Error message |
| | | * @param int $errno Level of the error |
| | | * @param string $errstr Error message |
| | | */ |
| | | public static function error_handler($errno, $errstr) |
| | | { |
| | |
| | | * Convert a string from one charset to another. |
| | | * Uses mbstring and iconv functions if possible |
| | | * |
| | | * @param string Input string |
| | | * @param string Suspected charset of the input string |
| | | * @param string Target charset to convert to; defaults to RCUBE_CHARSET |
| | | * @param string $str Input string |
| | | * @param string $from Suspected charset of the input string |
| | | * @param string $to Target charset to convert to; defaults to RCUBE_CHARSET |
| | | * |
| | | * @return string Converted string |
| | | */ |
| | | public static function convert($str, $from, $to = null) |
| | | { |
| | | static $iconv_options = null; |
| | | static $mbstring_list = null; |
| | | static $mbstring_sch = null; |
| | | static $iconv_options = null; |
| | | static $mbstring_list = null; |
| | | static $mbstring_sch = null; |
| | | |
| | | $to = empty($to) ? RCUBE_CHARSET : $to; |
| | | $to = empty($to) ? RCUBE_CHARSET : strtoupper($to); |
| | | $from = self::parse_charset($from); |
| | | |
| | | // It is a common case when UTF-16 charset is used with US-ASCII content (#1488654) |
| | |
| | | set_error_handler(array('rcube_charset', 'error_handler'), E_NOTICE); |
| | | try { |
| | | $out = iconv($from, $to . $iconv_options, $str); |
| | | } catch (ErrorException $e) { |
| | | } |
| | | catch (ErrorException $e) { |
| | | $out = false; |
| | | } |
| | | restore_error_handler(); |
| | |
| | | |
| | | // return if encoding found, string matches encoding and convert succeeded |
| | | if (in_array($mb_from, $mbstring_list) && in_array($mb_to, $mbstring_list)) { |
| | | if (mb_check_encoding($str, $mb_from)) { |
| | | // Do the same as //IGNORE with iconv |
| | | mb_substitute_character('none'); |
| | | $out = mb_convert_encoding($str, $mb_to, $mb_from); |
| | | mb_substitute_character($mbstring_sch); |
| | | // Do the same as //IGNORE with iconv |
| | | mb_substitute_character('none'); |
| | | |
| | | if ($out !== false) { |
| | | return $out; |
| | | } |
| | | // throw an exception if mbstring reports an illegal character in input |
| | | // using mb_check_encoding() is much slower |
| | | set_error_handler(array('rcube_charset', 'error_handler'), E_WARNING); |
| | | try { |
| | | $out = mb_convert_encoding($str, $mb_to, $mb_from); |
| | | } |
| | | catch (ErrorException $e) { |
| | | $out = false; |
| | | } |
| | | restore_error_handler(); |
| | | |
| | | mb_substitute_character($mbstring_sch); |
| | | |
| | | if ($out !== false) { |
| | | return $out; |
| | | } |
| | | } |
| | | } |