Re: Printing to terminal/standard output problem
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- Subject: Re: Printing to terminal/standard output problem
- From: PooshhMao <pooshhmao@...>
- Date: 2011年11月20日 20:17:12 +0100
Hi,
Thanks for your reply! I'm eager to learn more about the use of FFI.
However when I try to run your example I get the error: declaration
specifier expected near 'FILE'
Regards
Ralf
On 11/20/2011 05:20 PM, Francesco Abbate wrote:
I cannot resist to the temptations, this can be done so easily with
the FFI module :-)
local ffi = require('ffi')
ffi.cdef [[
extern FILE *stdin;
int isatty(int FILEDES);
int fileno (FILE *STREAM);
]]
function isatty()
local fd = ffi.C.fileno(ffi.C.stdin)
return ffi.C.isatty(fd)
end
Please note that the use of "fileno" can be avoided if you assume that
the file descriptor of stdin is 0. This is always true on linux.
Francesco