nativelibc/posix-io/isatty.c

/*	A part of the Native C Library for Windows NT
	Copyright 2007-2015 PC GO Ld.

	This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

	This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
*/

#include <unistd.h>

int isatty(int fd) {
	//if(fd != STDOUT_FILENO || fd != STDERR_FILENO) return 0;
	switch(fd) {
		case STDIN_FILENO:
			return 1;		// XXX
		case STDOUT_FILENO:
			return _get_stdout_fd() == TTY_FD_DEFAULT;
		case STDERR_FILENO:
			return _get_stderr_fd() == TTY_FD_DEFAULT;
		default:
			return 0;
	}
}