/**
* Returns encoded data based upon encoding passed to it
*
* @param $data The data to encode.
* @param $encoding The encoding type to use, 7bit, base64,
* or quoted-printable.
*/
private function getEncodedData($data, $encoding)
{
switch ($encoding) {
case '8bit':
case '7bit':
return $data;
break;
case 'quoted-printable':
return $this->quotedPrintableEncode($data);
break;
case 'base64':
return rtrim(chunk_explode(base64_encode($data), 76, MAIL_MIMEPART_CRLF));
break;
default:
return $data;
}
}
public function encode($input)
{
return rtrim(chunk_explode(base64_encode($input), 76, defined('MAIL_MIME_PART_CRLF') ? MAIL_MIME_PART_CRLF : "\r\n"));
}
/**
* Encode a header string to best (shortest) of Q, B, quoted or none.
* @access public
* @return string
*/
public function EncodeHeader($str, $position = 'text')
{
$x = 0;
switch (strtolower($position)) {
case 'phrase':
if (!preg_match('/[\\200-\\377]/', $str)) {
// Can't use addslashes as we don't know what value has magic_quotes_sybase
$encoded = addcslashes($str, ".. \\\"");
if ($str == $encoded && !preg_match('/[^A-Za-z0-9!#$%&\'*+\\/=?^_`{|}~ -]/', $str)) {
return $encoded;
} else {
return "\"{$encoded}\"";
}
}
$x = preg_match_all('/[^\\040\\041\\043-\\133\\135-\\176]/', $str, $matches);
break;
case 'comment':
$x = preg_match_all('/[()"]/', $str, $matches);
// Fall-through
// Fall-through
case 'text':
default:
$x += preg_match_all('/[\\000-\\010\\013\\014\\016-\\037\\177-\\377]/', $str, $matches);
break;
}
if ($x == 0) {
return $str;
}
$maxlen = 75 - 7 - strlen($this->CharSet);
// Try to select the encoding which should produce the shortest output
if (strlen($str) / 3 < $x) {
$encoding = 'B';
if (function_exists('mb_strlen') && $this->HasMultiBytes($str)) {
// Use a custom function which correctly encodes and wraps long
// multibyte strings without breaking lines within a character
$encoded = $this->Base64EncodeWrapMB($str);
} else {
$encoded = base64_encode($str);
$maxlen -= $maxlen % 4;
$encoded = trim(chunk_explode($encoded, $maxlen, "\n"));
}
} else {
$encoding = 'Q';
$encoded = $this->EncodeQ($str, $position);
$encoded = $this->WrapText($encoded, $maxlen, true);
$encoded = str_replace('=' . $this->LE, "\n", trim($encoded));
}
$encoded = preg_replace('/^(.*)$/m', " =?" . $this->CharSet . "?{$encoding}?\\1?=", $encoded);
$encoded = trim(str_replace("\n", $this->LE, $encoded));
return $encoded;
}