/**
* @param string $sInputString
* @param string $sInputFromEncoding
* @param string $sInputToEncoding
*
* @return string
*/
public static function ConvertEncoding($sInputString, $sInputFromEncoding, $sInputToEncoding)
{
$sResult = $sInputString;
$sFromEncoding = \MailSo\Base\Utils::NormalizeCharset($sInputFromEncoding);
$sToEncoding = \MailSo\Base\Utils::NormalizeCharset($sInputToEncoding);
if ('' === \trim($sResult) || $sFromEncoding === $sToEncoding && \MailSo\Base\Enumerations\Charset::UTF_8 !== $sFromEncoding) {
return $sResult;
}
$bUnknown = false;
switch (true) {
default:
$bUnknown = true;
break;
case $sFromEncoding === \MailSo\Base\Enumerations\Charset::ISO_8859_1 && $sToEncoding === \MailSo\Base\Enumerations\Charset::UTF_8 && \function_exists('utf8_encode'):
$sResult = \utf8_encode($sResult);
break;
case $sFromEncoding === \MailSo\Base\Enumerations\Charset::UTF_8 && $sToEncoding === \MailSo\Base\Enumerations\Charset::ISO_8859_1 && \function_exists('utf8_decode'):
$sResult = \utf8_decode($sResult);
break;
case $sFromEncoding === \MailSo\Base\Enumerations\Charset::UTF_7_IMAP && $sToEncoding === \MailSo\Base\Enumerations\Charset::UTF_8:
$sResult = \MailSo\Base\Utils::Utf7ModifiedToUtf8($sResult);
if (false === $sResult) {
$sResult = $sInputString;
}
break;
case $sFromEncoding === \MailSo\Base\Enumerations\Charset::UTF_8 && $sToEncoding === \MailSo\Base\Enumerations\Charset::UTF_7_IMAP:
$sResult = \MailSo\Base\Utils::Utf8ToUtf7Modified($sResult);
if (false === $sResult) {
$sResult = $sInputString;
}
break;
case $sFromEncoding === \MailSo\Base\Enumerations\Charset::UTF_7_IMAP:
$sResult = \MailSo\Base\Utils::ConvertEncoding(\MailSo\Base\Utils::ModifiedToPlainUtf7($sResult), \MailSo\Base\Enumerations\Charset::UTF_7, $sToEncoding);
break;
case \in_array(\strtolower($sFromEncoding), \MailSo\Base\Utils::$SuppostedCharsets):
if (\MailSo\Base\Utils::IsIconvSupported()) {
$sResult = \MailSo\Base\Utils::IconvConvertEncoding($sResult, $sFromEncoding, $sToEncoding);
} else {
if (\MailSo\Base\Utils::IsMbStringSupported()) {
$sResult = \MailSo\Base\Utils::MbConvertEncoding($sResult, $sFromEncoding, $sToEncoding);
}
}
$sResult = false !== $sResult ? $sResult : $sInputString;
break;
}
if ($bUnknown && \MailSo\Base\Utils::IsMbStringSupported()) {
$sResult = @\mb_convert_encoding($sResult, $sToEncoding);
}
return $sResult;
}