int
isatty(int f)
{
struct sgbuf sgbuf;
if(_gs_opt(f, &sgbuf) < 0) return -1;
return sgbuf.sg_class == 0;
}
void initscr()
{
/* make sure TERM variable is set */
#if MSDOS
char *val;
if (! (val = getenv("TERM"))
|| !strcmp(val, "pcbios"))
#else
if (!getenv("TERM"))
#endif
{
#if ANY_UNIX
write(2, "Environment variable TERM must be set\n", (unsigned)38);
exit(1);
#endif
#if OSK
writeln(2, "Environment variable TERM must be set\n", (unsigned)38);
exit(1);
#endif
#if MSDOS || TOS
getsize(0);
#endif
}
else
{
#if MSDOS
*o_pcbios=0;
#endif
/* start termcap stuff */
starttcap();
}
/* create stdscr and curscr */
stdscr = kbuf;
/* change the terminal mode to cbreak/noecho */
#if ANY_UNIX
# if UNIXV
/*ioctl(2, TCGETS, &oldtermios);*/
tcgetattr(2, &oldtermios);
# else
ioctl(2, TIOCGETP, &oldsgttyb);
# endif
#endif
#if OSK
_gs_opt(0, &oldsgttyb);
#endif
resume_curses(TRUE);
}
/* Initialize the Curses package. */
void initscr()
{
/* make sure TERM variable is set */
termtype = getenv("TERM");
#if VMS
/* VMS getenv() handles TERM as a environment setting. Foreign
* terminal support can be implemented by setting the ELVIS_TERM
* logical or symbol to match a tinytcap entry.
*/
if (!strcmp(termtype,"unknown"))
termtype = getenv("ELVIS_TERM");
#endif
#if MSDOS
/* For MS-DOS, if TERM is unset we can default to "pcbios", or
* maybe "rainbow".
*/
if (!termtype)
{
#ifdef RAINBOW
if (*(unsigned char far*)(0xffff000eL) == 6 /* Rainbow 100a */
|| *(unsigned char far*)(0xffff000eL) == 148)/* Rainbow 100b */
{
termtype = "rainbow";
}
else
#endif
termtype = "pcbios";
}
if (!strcmp(termtype, "pcbios"))
#else
if (!termtype)
#endif
{
#if ANY_UNIX
write(2, "Environment variable TERM must be set\n", (unsigned)38);
exit(1);
#endif
#if OSK
writeln(2, "Environment variable TERM must be set\n", (unsigned)38);
exit(1);
#endif
#if AMIGA
termtype = TERMTYPE;
starttcap(termtype);
#endif
#if MSDOS
starttcap("pcbios");
#endif
#if TOS
termtype = "vt52";
starttcap(termtype);
#endif
#if VMS
write(2, "UNKNOWN terminal: define ELVIS_TERM\n", (unsigned)36);
exit(1);
#endif
}
else
{
#if MSDOS
*o_pcbios = 0;
#endif
/* start termcap stuff */
starttcap(termtype);
}
/* create stdscr and curscr */
stdscr = kbuf;
/* change the terminal mode to cbreak/noecho */
#if ANY_UNIX
tcgetattr(2, &oldtermio);
#endif
#if OSK
_gs_opt(0, &oldsgttyb);
#endif
#if VMS
VMS_read_raw = 1; /* cbreak/noecho */
vms_open_tty();
#endif
resume_curses(TRUE);
}