bool FileStream::Open(const char *name, dword mode) {
LLOG("Open " << name << " mode: " << mode);
Close();
int iomode = mode & ~SHAREMASK;
if(IsWinNT())
handle = UnicodeWin32().CreateFileW(ToSystemCharsetW(name),
iomode == READ ? GENERIC_READ : GENERIC_READ|GENERIC_WRITE,
(mode & NOREADSHARE ? 0 : FILE_SHARE_READ)
| (mode & NOWRITESHARE ? 0 : FILE_SHARE_WRITE)
| (mode & DELETESHARE ? FILE_SHARE_DELETE : 0),
NULL,
iomode == READ ? OPEN_EXISTING : iomode == CREATE ? CREATE_ALWAYS : OPEN_ALWAYS,
FILE_ATTRIBUTE_NORMAL|FILE_FLAG_SEQUENTIAL_SCAN,
NULL
);
else
handle = CreateFile(ToSystemCharset(name),
iomode == READ ? GENERIC_READ : GENERIC_READ|GENERIC_WRITE,
(mode & NOREADSHARE ? 0 : FILE_SHARE_READ)
| (mode & NOWRITESHARE ? 0 : FILE_SHARE_WRITE)
| (mode & DELETESHARE ? FILE_SHARE_DELETE : 0),
NULL,
iomode == READ ? OPEN_EXISTING : iomode == CREATE ? CREATE_ALWAYS : OPEN_ALWAYS,
FILE_ATTRIBUTE_NORMAL|FILE_FLAG_SEQUENTIAL_SCAN,
NULL
);
if(handle == INVALID_HANDLE_VALUE) {
SetError();
return FALSE;
}
dword fsz_lo, fsz_hi;
fsz_lo = ::GetFileSize(handle, &fsz_hi);
int64 fsz;
if(fsz_lo == 0xffffffff && GetLastError() != NO_ERROR)
fsz = 0;
else
fsz = fsz_lo | (int64(fsz_hi) << 32);
OpenInit(iomode, fsz);
LLOG("OPEN " << handle);
return TRUE;
}
bool FileStream::Open(const char *name, dword mode, mode_t tmode) {
Close();
int iomode = mode & ~SHAREMASK;
handle = open(ToSystemCharset(name), iomode == READ ? O_RDONLY :
iomode == CREATE ? O_CREAT|O_RDWR|O_TRUNC :
O_RDWR|O_CREAT,
tmode);
if(handle >= 0) {
if((mode & NOWRITESHARE) && flock(handle, LOCK_EX|LOCK_NB) < 0) {
close(handle);
handle = -1;
return false;
}
int64 fsz = LSEEK64_(handle, 0, SEEK_END);
if(fsz >= 0) {
OpenInit(mode, fsz);
return true;
}
}
SetLastError();
return false;
}
