/**
* Multibyte wrapper for strftime.
*
* Handles utf8_encoding the result of strftime when necessary.
*
* @param string $format Format string.
* @param int $date Timestamp to format.
* @return string formatted string with correct encoding.
*/
protected function _strftime($format, $date)
{
$format = strftime($format, $date);
$encoding = Configure::read('App.encoding');
if (!empty($encoding) && $encoding === 'UTF-8') {
if (function_exists('mb_check_encoding')) {
$valid = mb_check_encoding($format, $encoding);
} else {
$valid = !Multibyte::checkMultibyte($format);
}
if (!$valid) {
$format = utf8_encode($format);
}
}
return $format;
}
/**
* Prepare a string for mail transport, using the provided encoding
*
* @param string $string value to encode
* @param string $charset charset to use for encoding. defaults to UTF-8
* @param string $newline
* @return string
* @access public
* @static
* @TODO: add support for 'Q'('Quoted Printable') encoding
*/
function mimeEncode($string, $charset = null, $newline = "\r\n")
{
if (!Multibyte::checkMultibyte($string) && strlen($string) < 75) {
return $string;
}
if (empty($charset)) {
$charset = Configure::read('App.encoding');
}
$charset = strtoupper($charset);
$start = '=?' . $charset . '?B?';
$end = '?=';
$spacer = $end . $newline . ' ' . $start;
$length = 75 - strlen($start) - strlen($end);
$length = $length - $length % 4;
if ($charset == 'UTF-8') {
$parts = array();
$maxchars = floor($length * 3 / 4);
while (strlen($string) > $maxchars) {
$i = $maxchars;
$test = ord($string[$i]);
while ($test >= 128 && $test <= 191) {
$i--;
$test = ord($string[$i]);
}
$parts[] = base64_encode(substr($string, 0, $i));
$string = substr($string, $i);
}
$parts[] = base64_encode($string);
$string = implode($spacer, $parts);
} else {
$string = chunk_split(base64_encode($string), $length, $spacer);
$string = preg_replace('/' . preg_quote($spacer) . '$/', '', $string);
}
return $start . $string . $end;
}
