minix/external/bsd/nvi/dist/ip/ip_screen.c
Lionel Sambuc 0a6a1f1d05 NetBSD re-synchronization of the source tree
This brings our tree to NetBSD 7.0, as found on -current on the
10-10-2015.

This updates:
 - LLVM to 3.6.1
 - GCC to GCC 5.1
 - Replace minix/commands/zdump with usr.bin/zdump
 - external/bsd/libelf has moved to /external/bsd/elftoolchain/
 - Import ctwm
 - Drop sprintf from libminc

Change-Id: I149836ac18e9326be9353958bab9b266efb056f0
2016-01-13 20:32:14 +01:00

99 lines
1.8 KiB
C

/* $NetBSD: ip_screen.c,v 1.3 2014/01/26 21:43:45 christos Exp $ */
/*-
* Copyright (c) 1996
* Keith Bostic. All rights reserved.
*
* See the LICENSE file for redistribution information.
*/
#include "config.h"
#include <sys/cdefs.h>
#if 0
#ifndef lint
static const char sccsid[] = "Id: ip_screen.c,v 8.8 2001/06/25 15:19:24 skimo Exp (Berkeley) Date: 2001/06/25 15:19:24 ";
#endif /* not lint */
#else
__RCSID("$NetBSD: ip_screen.c,v 1.3 2014/01/26 21:43:45 christos Exp $");
#endif
#include <sys/types.h>
#include <sys/queue.h>
#include <bitstring.h>
#include <stdio.h>
#include "../common/common.h"
#include "../ipc/ip.h"
/*
* ip_screen --
* Initialize/shutdown the IP screen.
*
* PUBLIC: int ip_screen __P((SCR *, u_int32_t));
*/
int
ip_screen(SCR *sp, u_int32_t flags)
{
GS *gp;
IP_PRIVATE *ipp;
gp = sp->gp;
ipp = IPP(sp);
/* See if the current information is incorrect. */
if (F_ISSET(gp, G_SRESTART)) {
if (ip_quit(sp->wp))
return (1);
F_CLR(gp, G_SRESTART);
}
/* See if we're already in the right mode. */
if ((LF_ISSET(SC_EX) && F_ISSET(sp, SC_SCR_EX)) ||
(LF_ISSET(SC_VI) && F_ISSET(sp, SC_SCR_VI)))
return (0);
/* Ex isn't possible if there is no terminal. */
if (LF_ISSET(SC_EX) && ipp->t_fd == -1)
return (1);
if (F_ISSET(sp, SC_SCR_EX))
F_CLR(sp, SC_SCR_EX);
if (F_ISSET(sp, SC_SCR_VI))
F_CLR(sp, SC_SCR_VI);
if (LF_ISSET(SC_EX)) {
F_SET(ipp, IP_IN_EX);
} else {
/* Initialize terminal based information. */
if (ip_term_init(sp))
return (1);
F_CLR(ipp, IP_IN_EX);
F_SET(ipp, IP_SCR_VI_INIT);
}
return (0);
}
/*
* ip_quit --
* Shutdown the screens.
*
* PUBLIC: int ip_quit __P((WIN *));
*/
int
ip_quit(WIN *wp)
{
IP_PRIVATE *ipp;
int rval;
/* Clean up the terminal mappings. */
rval = ip_term_end(wp->gp);
ipp = WIPP(wp);
F_CLR(ipp, IP_SCR_VI_INIT);
return (rval);
}