Set and get kIsStationary bit using NSURL - objective-c

Question

I'm porting some old FSRef code to use NSURL, NSFileManager and friends. Everything works except setting and getting the Finder kIsStationery bit on the file.
Is there a way to do this without falling back on deprecated FSRef methods?

Answer 1

So after a bit of research here is the answer for setting and getting the stationery bit:
struct FileInfoBuf
{
u_int32_t info_length;
union
{
u_int32_t padding[8];
struct
{
u_int32_t type;
u_int32_t creator;
u_int16_t fdFlags;
u_int16_t location;
u_int32_t padding[4];
}
info;
}
data;
};
bool IsStationeryPad(const std::string& path)
{
attrlist attrList;
FileInfoBuf fileInfo;
attrList.bitmapcount = ATTR_BIT_MAP_COUNT;
attrList.reserved = 0;
attrList.commonattr = ATTR_CMN_FNDRINFO;
attrList.volattr = 0;
attrList.dirattr = 0;
attrList.fileattr = 0;
attrList.forkattr = 0;
if (getattrlist(path.c_str(), &attrList, &fileInfo, sizeof(fileInfo), FSOPT_NOFOLLOW) == noErr)
{
return (CFSwapInt16BigToHost(fileInfo.data.info.fdFlags) & kIsStationery);
}
return false;
}
void SetStationeryPad(const std::string& path, bool isStationery)
{
OSErr err = noErr;
attrlist attrList;
FileInfoBuf fileInfo;
attrList.bitmapcount = ATTR_BIT_MAP_COUNT;
attrList.reserved = 0;
attrList.commonattr = ATTR_CMN_FNDRINFO;
attrList.volattr = 0;
attrList.dirattr = 0;
attrList.fileattr = 0;
attrList.forkattr = 0;
err = getattrlist(path.c_str(), &attrList, &fileInfo, sizeof(fileInfo), FSOPT_NOFOLLOW);
if (err == noErr)
{
fileInfo.data.info.fdFlags |= CFSwapInt16HostToBig(kIsStationery);
setattrlist(path.c_str(), &attrList, &fileInfo.data, sizeof(fileInfo.data), FSOPT_NOFOLLOW);
}
}
Note that there is no real error checking in this code. Also, applications probably shouldn't be setting this bit, this is really a user decision and shuld be controlled through the Finder.