NetBSD/usr.bin/vi/sex/sex_util.c

149 lines
3.7 KiB
C

/*-
* Copyright (c) 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char sccsid[] = "@(#)sex_util.c 8.17 (Berkeley) 8/17/94";
#endif /* not lint */
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/time.h>
#include <bitstring.h>
#include <errno.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
#include "compat.h"
#include <db.h>
#include <regex.h>
#include "vi.h"
#include "excmd.h"
#include "sex_screen.h"
/*
* sex_bell --
* Ring the bell.
*/
void
sex_bell(sp)
SCR *sp;
{
(void)write(STDOUT_FILENO, "\07", 1); /* \a */
}
void
sex_busy(sp, msg)
SCR *sp;
char const *msg;
{
(void)fprintf(stdout, "%s\n", msg);
(void)fflush(stdout);
}
/*
* sex_optchange --
* Screen specific "option changed" routine.
*/
int
sex_optchange(sp, opt)
SCR *sp;
int opt;
{
switch (opt) {
case O_TERM:
/* Reset the screen size. */
if (sp->s_window(sp, 0))
return (1);
F_SET(sp, S_RESIZE);
break;
}
(void)ex_optchange(sp, opt);
return (0);
}
/*
* sex_suspend --
* Suspend an ex screen.
*/
int
sex_suspend(sp)
SCR *sp;
{
struct termios t;
GS *gp;
int rval;
rval = 0;
/* Save current terminal settings, and restore the original ones. */
gp = sp->gp;
if (F_ISSET(gp, G_STDIN_TTY)) {
if (tcgetattr(STDIN_FILENO, &t)) {
msgq(sp, M_SYSERR, "suspend: tcgetattr");
return (1);
}
if (F_ISSET(gp, G_TERMIOS_SET) && tcsetattr(STDIN_FILENO,
TCSASOFT | TCSADRAIN, &gp->original_termios)) {
msgq(sp, M_SYSERR, "suspend: tcsetattr original");
return (1);
}
}
/* Push out any waiting messages. */
(void)sex_refresh(sp, sp->ep);
/* Stop the process group. */
if (kill(0, SIGTSTP)) {
msgq(sp, M_SYSERR, "suspend: kill");
rval = 1;
}
/* Time passes ... */
/* Restore current terminal settings. */
if (F_ISSET(gp, G_STDIN_TTY) &&
tcsetattr(STDIN_FILENO, TCSASOFT | TCSADRAIN, &t)) {
msgq(sp, M_SYSERR, "suspend: tcsetattr current");
rval = 1;
}
return (rval);
}