private static int GIOFile(LinyeeState L, int f, CharPtr mode)
{
if (!LinyeeIsNoneOrNil(L, 1))
{
CharPtr filename = LinyeeToString(L, 1);
if (filename != null)
{
FilePtr pf = NewFile(L);
pf.file = fopen(filename, mode);
if (pf.file == null)
{
FileError(L, 1, filename);
}
}
else
{
ToFile(L); /* check that it's a valid file file */
LinyeePushValue(L, 1);
}
LinyeeRawSetI(L, LINYEE_ENVIRONINDEX, f);
}
/* return current value */
LinyeeRawGetI(L, LINYEE_ENVIRONINDEX, f);
return(1);
}
/*
** function to close regular files
*/
private static int IoFClose(LinyeeState L)
{
FilePtr p = ToFilePointer(L);
int ok = (fclose(p.file) == 0) ? 1 : 0;
p.file = null;
return(PushResult(L, ok, null));
}
/*
** this function has a separated environment, which defines the
** correct __close for 'popen' files
*/
private static int IoPopen(LinyeeState L)
{
CharPtr filename = LinyeeLCheckString(L, 1);
CharPtr mode = LinyeeLOptString(L, 2, "r");
FilePtr pf = NewFile(L);
pf.file = LinyeePopen(L, filename, mode);
return((pf.file == null) ? PushResult(L, 0, filename) : 1);
}
/*
** When creating file files, always creates a `closed' file file
** before opening the actual file; so, if there is a memory error, the
** file is not left opened.
*/
private static FilePtr NewFile(LinyeeState L)
{
FilePtr pf = (FilePtr)LinyeeNewUserData(L, typeof(FilePtr));
pf.file = null; /* file file is currently `closed' */
LinyeeLGetMetatable(L, LINYEE_FILEHANDLE);
LinyeeSetMetatable(L, -2);
return(pf);
}
private static Stream ToFile(LinyeeState L)
{
FilePtr f = ToFilePointer(L);
if (f.file == null)
{
LinyeeLError(L, "attempt to use a closed file");
}
return(f.file);
}
private static int IoTmpFile(LinyeeState L)
{
FilePtr pf = NewFile(L);
#if XBOX
LinyeeLError(L, "io_tmpfile not supported on Xbox360");
#else
pf.file = tmpfile();
#endif
return((pf.file == null) ? PushResult(L, 0, null) : 1);
}
private static int IoLines(LinyeeState L)
{
if (LinyeeIsNoneOrNil(L, 1)) /* no arguments? */
/* will iterate over default input */
{
LinyeeRawGetI(L, LINYEE_ENVIRONINDEX, IOINPUT);
return(FLines(L));
}
else
{
CharPtr filename = LinyeeLCheckString(L, 1);
FilePtr pf = NewFile(L);
pf.file = fopen(filename, "r");
if (pf.file == null)
{
FileError(L, 1, filename);
}
AuxLines(L, LinyeeGetTop(L), 1);
return(1);
}
}