contrib/nvi/tk/tk_screen.c

   1 /*-
   2  * Copyright (c) 1993, 1994
   3  *      The Regents of the University of California.  All rights reserved.
   4  * Copyright (c) 1993, 1994, 1995, 1996
   5  *      Keith Bostic.  All rights reserved.
   6  *
   7  * See the LICENSE file for redistribution information.
   8  */
   9
  10 #include "config.h"
  11
  12 #ifndef lint
  13 static const char sccsid[] = "@(#)tk_screen.c   8.9 (Berkeley) 5/24/96";
  14 #endif /* not lint */
  15
  16 #include <sys/types.h>
  17 #include <sys/queue.h>
  18
  19 #include <bitstring.h>
  20 #include <errno.h>
  21 #include <signal.h>
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <termios.h>
  26 #include <unistd.h>
  27
  28 #include "../common/common.h"
  29 #include "tki.h"
  30
  31 /*
  32  * tk_screen --
  33  *      Initialize/shutdown the Tcl/Tk screen.
  34  *
  35  * PUBLIC: int tk_screen __P((SCR *, u_int32_t));
  36  */
  37 int
  38 tk_screen(sp, flags)
  39         SCR *sp;
  40         u_int32_t flags;
  41 {
  42         TK_PRIVATE *tkp;
  43
  44         tkp = TKP(sp);
  45
  46         /* See if we're already in the right mode. */
  47         if (LF_ISSET(SC_VI) && F_ISSET(sp, SC_SCR_VI))
  48                 return (0);
  49
  50         /* Ex isn't possible. */
  51         if (LF_ISSET(SC_EX))
  52                 return (1);
  53
  54         /* Initialize terminal based information. */
  55         if (tk_term_init(sp))
  56                 return (1);
  57
  58         /* Put up the first file name. */
  59         if (tk_rename(sp))
  60                 return (1);
  61
  62         F_SET(tkp, TK_SCR_VI_INIT);
  63         return (0);
  64 }
  65
  66 /*
  67  * tk_quit --
  68  *      Shutdown the screens.
  69  *
  70  * PUBLIC: int tk_quit __P((GS *));
  71  */
  72 int
  73 tk_quit(gp)
  74         GS *gp;
  75 {
  76         TK_PRIVATE *tkp;
  77         int rval;
  78
  79         /* Clean up the terminal mappings. */
  80         rval = tk_term_end(gp);
  81
  82         tkp = GTKP(gp);
  83         F_CLR(tkp, TK_SCR_VI_INIT);
  84
  85         return (rval);
  86 }