usr/src/lib/libcurses/screen/restart.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1988 AT&T */
  28 /*        All Rights Reserved   */
  29
  30 /*
  31  * University Copyright- Copyright (c) 1982, 1986, 1988
  32  * The Regents of the University of California
  33  * All Rights Reserved
  34  *
  35  * University Acknowledgment- Portions of this document are derived from
  36  * software developed by the University of California, Berkeley, and its
  37  * contributors.
  38  */
  39
  40 #pragma ident   "%Z%%M% %I%     %E% SMI"
  41
  42 /*LINTLIBRARY*/
  43
  44 #include        <sys/types.h>
  45 #include        "curses_inc.h"
  46
  47 /*
  48  * This is useful after saving/restoring memory from a file (e.g. as
  49  * in a rogue save game).  It assumes that the modes and windows are
  50  * as wanted by the user, but the terminal type and baud rate may
  51  * have changed.
  52  */
  53
  54 extern  char    _called_before;
  55
  56 int
  57 /* The next line causes a lint warning because errret is not used */
  58 restartterm(char *term, int filenum, int *errret)
  59 /* int  filenum - This is a UNIX file descriptor, not a stdio ptr. */
  60 {
  61         int     saveecho = SP->fl_echoit;
  62         int     savecbreak = cur_term->_fl_rawmode;
  63         int     savenl;
  64
  65 #ifdef  SYSV
  66         savenl = PROGTTYS.c_iflag & ONLCR;
  67 #else   /* SYSV */
  68         savenl = PROGTTY.sg_flags & CRMOD;
  69 #endif  /* SYSV */
  70
  71         _called_before = 0;
  72         (void) setupterm(term, filenum, (int *) 0);
  73
  74         /* Restore curses settable flags, leaving other stuff alone. */
  75         SP->fl_echoit = saveecho;
  76
  77         (void) nocbreak();
  78         (void) noraw();
  79         if (savecbreak == 1)
  80                 (void) cbreak();
  81         else
  82                 if (savecbreak == 2)
  83                         (void) raw();
  84
  85         if (savenl)
  86                 (void) nl();
  87         else
  88                 (void) nonl();
  89
  90         (void) reset_prog_mode();
  91
  92         LINES = SP->lsize;
  93         COLS = columns;
  94         return (OK);
  95 }