/*f
* Print error message with command name and trailing newline.
* Leading ! indicates format errno on the end.
* The value of errno is restored on completion.
*/
void
ERRORFN(const char *fmt, va_list args)
{
int saveerrno = errno;
int syserr = 0;
if (_cmdname != NULL)
fprintf(stderr, "%s: ", _cmdname);
fmt = m_strmsg(fmt);
if (*fmt == '!') {
fmt++;
syserr++;
}
vfprintf(stderr, fmt, args);
if (syserr) {
char *str;
/* Do eprintf-like stuff */
str = strerror(saveerrno);
if (*str == '\0')
fprintf(stderr, ": errno = %d", saveerrno);
else
fprintf(stderr,": %s", str);
}
fputc('\n', stderr);
errno = saveerrno;
DONE;
}
/*f
* Initialize XCurses for use with a single terminal. stdin and stdout
* are used. If a program needs an indication of error conditions,
* so that it can continue to run in a line-oriented mode, use newterm()
* instead.
*/
WINDOW *
initscr()
{
WINDOW *w;
SCREEN *sp;
int i, n, begy;
char *term, *err;
#ifdef M_CURSES_TRACE
__m_trace("initscr(void)");
#endif
errno = 0;
sp = newterm((char *) 0, stdout, stdin);
if (sp == (SCREEN *) 0) {
err = errno == ENOMEM ? nomem_msg : noterm_msg;
goto error_1;
}
(void) set_term(sp);
/* We require some form of cursor positioning and the ability to
* clear the end of a line. These abilities should be sufficient
* to provide minimum full screen support.
*/
if (1 < lines
&& cursor_address == (char *) 0
&& row_address == (char *) 0
&& (cursor_up == (char *) 0 || cursor_down == (char *) 0)
&& (parm_up_cursor == (char *) 0 || parm_down_cursor == (char *) 0)) {
err = dumb_msg;
goto error_3;
}
if ((1 < lines && cursor_address == (char *) 0)
&& column_address == (char *) 0
&& (cursor_left == (char *) 0 || cursor_right == (char *) 0)
&& (parm_left_cursor == (char *) 0 || parm_right_cursor == (char *)0)) {
err = dumb_msg;
goto error_3;
}
if (clr_eol == (char *) 0) {
err = dumb_msg;
goto error_3;
}
return __m_return_pointer("initscr", stdscr);
error_3:
(void) delwin(stdscr);
error_2:
(void) endwin();
(void) delscreen(sp);
error_1:
/* newterm()/setupterm() attempts to load $TERM, else if
* $TERM is not defined, the vendor's default terminal type.
*/
if ((term = getenv("TERM")) == (char *) 0)
term = M_TERM_NAME;
(void) fprintf(stderr, m_strmsg(err), term);
error_0:
exit(1);
return (0); /* keep gcc happy */
}