const CFStringEncoding *
CFStringGetListOfAvailableEncodings (void)
{
if (_kCFStringEncodingList == NULL)
{
GSMutexLock (&_kCFStringEncodingLock);
if (_kCFStringEncodingList == NULL)
{
int32_t count;
int32_t idx;
const char *name;
UErrorCode err = U_ZERO_ERROR;
count = ucnv_countAvailable ();
_kCFStringEncodingList = CFAllocatorAllocate (NULL,
sizeof(CFStringEncoding) * (count + 1), 0);
idx = 0;
while (idx < count)
{
name = ucnv_getStandardName(ucnv_getAvailableName (idx),
"MIME", &err);
if (U_SUCCESS(err))
_kCFStringEncodingList[idx] =
CFStringConvertStandardNameToEncoding (name, -1);
++idx;
}
_kCFStringEncodingList[idx] = kCFStringEncodingInvalidId;
}
GSMutexUnlock (&_kCFStringEncodingLock);
}
return _kCFStringEncodingList;
}
CFStringEncoding
CFStringGetSystemEncoding (void)
{
#if defined(_WIN32)
return kCFStringEncodingASCII;
#else
if (_kCFStringSystemEncoding == kCFStringEncodingInvalidId)
{
GSMutexLock (&_kCFStringEncodingLock);
if (_kCFStringSystemEncoding == kCFStringEncodingInvalidId)
{
const char *name;
const char *defaultName;
UErrorCode err = U_ZERO_ERROR;
defaultName = ucnv_getDefaultName ();
name = ucnv_getStandardName (defaultName, "MIME", &err);
if (name != NULL)
{
_kCFStringSystemEncoding =
CFStringConvertStandardNameToEncoding (name, -1);
}
else
{
name = ucnv_getStandardName (defaultName, "IANA", &err);
if (name != NULL)
_kCFStringSystemEncoding =
CFStringConvertStandardNameToEncoding (name, -1);
else
_kCFStringSystemEncoding = kCFStringEncodingInvalidId;
}
}
GSMutexUnlock (&_kCFStringEncodingLock);
}
return _kCFStringSystemEncoding;
#endif
}
CFStringEncoding
CFStringConvertIANACharSetNameToEncoding (CFStringRef str)
{
/* We'll start out by checking if it's one of the UTF identifiers, than ISO,
Windows codepages, DOS codepages and EUC. Will use strncasecmp because
the compare here is not case sensitive. */
char buffer[32];
CFIndex length;
if (!CFStringGetCString (str, buffer, 32, kCFStringEncodingASCII))
return kCFStringEncodingInvalidId;
length = CFStringGetLength (str);
return CFStringConvertStandardNameToEncoding (buffer, length);
}
