/*
* sig_init --
* Initialize signals.
*
* PUBLIC: int sig_init(GS *, SCR *);
*/
int
sig_init(GS *gp, SCR *sp)
{
CL_PRIVATE *clp;
clp = GCLP(gp);
if (sp == NULL) {
(void)sigemptyset(&__sigblockset);
if (sigaddset(&__sigblockset, SIGHUP) ||
setsig(SIGHUP, &clp->oact[INDX_HUP], h_hup) ||
sigaddset(&__sigblockset, SIGINT) ||
setsig(SIGINT, &clp->oact[INDX_INT], h_int) ||
sigaddset(&__sigblockset, SIGTERM) ||
setsig(SIGTERM, &clp->oact[INDX_TERM], h_term) ||
sigaddset(&__sigblockset, SIGWINCH) ||
setsig(SIGWINCH, &clp->oact[INDX_WINCH], h_winch)
) {
err(1, NULL);
return (1);
}
} else
if (setsig(SIGHUP, NULL, h_hup) ||
setsig(SIGINT, NULL, h_int) ||
setsig(SIGTERM, NULL, h_term) ||
setsig(SIGWINCH, NULL, h_winch)
) {
msgq(sp, M_SYSERR, "signal-reset");
}
return (0);
}
/*
* sig_end --
* End signal setup.
*/
static void
sig_end(GS *gp)
{
CL_PRIVATE *clp;
clp = GCLP(gp);
(void)sigaction(SIGHUP, NULL, &clp->oact[INDX_HUP]);
(void)sigaction(SIGINT, NULL, &clp->oact[INDX_INT]);
(void)sigaction(SIGTERM, NULL, &clp->oact[INDX_TERM]);
(void)sigaction(SIGWINCH, NULL, &clp->oact[INDX_WINCH]);
}
/*
* cl_ex_end --
* Shutdown the ex screen.
*/
static int
cl_ex_end(GS *gp)
{
CL_PRIVATE *clp;
clp = GCLP(gp);
cl_freecap(clp);
return (0);
}
/*
* cl_quit --
* Shutdown the screens.
*
* PUBLIC: int cl_quit __P((GS *));
*/
int
cl_quit(GS *gp)
{
CL_PRIVATE *clp;
int rval;
rval = 0;
clp = GCLP(gp);
/*
* If we weren't really running, ignore it. This happens if the
* screen changes size before we've called curses.
*/
if (!F_ISSET(clp, CL_SCR_EX_INIT | CL_SCR_VI_INIT))
return (0);
/* Clean up the terminal mappings. */
if (cl_term_end(gp))
rval = 1;
/* Really leave vi mode. */
if (F_ISSET(clp, CL_STDIN_TTY) &&
F_ISSET(clp, CL_SCR_VI_INIT) && cl_vi_end(gp))
rval = 1;
/* Really leave ex mode. */
if (F_ISSET(clp, CL_STDIN_TTY) &&
F_ISSET(clp, CL_SCR_EX_INIT) && cl_ex_end(gp))
rval = 1;
/*
* If we were running ex when we quit, or we're using an implementation
* of curses where endwin() doesn't get this right, restore the original
* terminal modes.
*
* XXX
* We always do this because it's too hard to figure out what curses
* implementations get it wrong. It may discard type-ahead characters
* from the tty queue.
*/
(void)tcsetattr(STDIN_FILENO, TCSADRAIN | TCSASOFT, &clp->orig);
F_CLR(clp, CL_SCR_EX_INIT | CL_SCR_VI_INIT);
return (rval);
}
/*
* cl_vi_end --
* Shutdown the vi screen.
*/
static int
cl_vi_end(GS *gp)
{
CL_PRIVATE *clp;
clp = GCLP(gp);
/* Restore the cursor keys to normal mode. */
(void)keypad(stdscr, FALSE);
/*
* If we were running vi when we quit, scroll the screen up a single
* line so we don't lose any information.
*
* Move to the bottom of the window (some endwin implementations don't
* do this for you).
*/
if (!F_ISSET(clp, CL_IN_EX) && !F_ISSET(gp, G_SRESTART)) {
(void)move(0, 0);
(void)deleteln();
(void)move(LINES - 1, 0);
(void)refresh();
}
cl_freecap(clp);
/* End curses window. */
(void)endwin();
/* Delete curses screen. */
delscreen(clp->screen);
/*
* XXX
* The screen TE sequence just got sent. See the comment in
* cl_funcs.c:cl_attr().
*/
clp->ti_te = TE_SENT;
return (0);
}
/*
* sig_init --
* Initialize signals.
*
* PUBLIC: int sig_init(GS *, SCR *);
*/
int
sig_init(GS *gp, SCR *sp)
{
CL_PRIVATE *clp;
clp = GCLP(gp);
if (sp == NULL) {
if (setsig(SIGHUP, &clp->oact[INDX_HUP], h_hup) ||
setsig(SIGINT, &clp->oact[INDX_INT], h_int) ||
setsig(SIGTERM, &clp->oact[INDX_TERM], h_term) ||
setsig(SIGWINCH, &clp->oact[INDX_WINCH], h_winch)
)
err(1, NULL);
} else
if (setsig(SIGHUP, NULL, h_hup) ||
setsig(SIGINT, NULL, h_int) ||
setsig(SIGTERM, NULL, h_term) ||
setsig(SIGWINCH, NULL, h_winch)
) {
msgq(sp, M_SYSERR, "signal-reset");
}
return (0);
}
