ncurses/lib_restart.c

   1
   2 /***************************************************************************
   3 *                            COPYRIGHT NOTICE                              *
   4 ****************************************************************************
   5 *                ncurses is copyright (C) 1992-1995                        *
   6 *                          Zeyd M. Ben-Halim                               *
   7 *                          zmbenhal@netcom.com                             *
   8 *                          Eric S. Raymond                                 *
   9 *                          esr@snark.thyrsus.com                           *
  10 *                                                                          *
  11 *        Permission is hereby granted to reproduce and distribute ncurses  *
  12 *        by any means and for any fee, whether alone or as part of a       *
  13 *        larger distribution, in source or in binary form, PROVIDED        *
  14 *        this notice is included with any such distribution, and is not    *
  15 *        removed from any of its header files. Mention of ncurses in any   *
  16 *        applications linked with it is highly appreciated.                *
  17 *                                                                          *
  18 *        ncurses comes AS IS with no warranty, implied or expressed.       *
  19 *                                                                          *
  20 ***************************************************************************/
  21
  22 /*
  23  * Terminfo-only terminal setup routines:
  24  *
  25  *              int restartterm(const char *, int, int *)
  26  *              TERMINAL *set_curterm(TERMINAL *)
  27  *              int del_curterm(TERMINAL *)
  28  */
  29
  30 #include <curses.priv.h>
  31
  32 #ifdef SVR4_TERMIO
  33 #define _POSIX_SOURCE
  34 #endif
  35
  36 #include <term.h>       /* lines, columns, cur_term */
  37
  38 MODULE_ID("$Id: lib_restart.c,v 1.11 1997/02/02 01:10:25 tom Exp $")
  39
  40 #undef tabs
  41
  42 #ifdef TAB3
  43 # define tabs TAB3
  44 #else
  45 # ifdef XTABS
  46 #  define tabs XTABS
  47 # else
  48 #  ifdef OXTABS
  49 #   define tabs OXTABS
  50 #  else
  51 #   define tabs 0
  52 #  endif
  53 # endif
  54 #endif
  55
  56 int def_shell_mode(void)
  57 {
  58         T((T_CALLED("def_shell_mode()")));
  59
  60         if (cur_term == 0)
  61                 returnCode(ERR);
  62
  63         /*
  64          * Turn off the XTABS bit in the tty structure if it was on.  If XTABS
  65          * was on, remove the tab and backtab capabilities.
  66          */
  67
  68         if (GET_TTY(cur_term->Filedes, &cur_term->Ottyb) == -1)
  69                 returnCode(ERR);
  70 #ifdef TERMIOS
  71         if (cur_term->Ottyb.c_oflag & tabs)
  72                 tab = back_tab = NULL;
  73 #else
  74         if (cur_term->Ottyb.sg_flags & XTABS)
  75                 tab = back_tab = NULL;
  76 #endif
  77         returnCode(OK);
  78 }
  79
  80 int def_prog_mode(void)
  81 {
  82         T((T_CALLED("def_prog_mode()")));
  83
  84         if (cur_term == 0)
  85                 returnCode(ERR);
  86
  87         if (GET_TTY(cur_term->Filedes, &cur_term->Nttyb) == -1)
  88                 returnCode(ERR);
  89 #ifdef TERMIOS
  90         cur_term->Nttyb.c_oflag &= ~tabs;
  91 #else
  92         cur_term->Nttyb.sg_flags &= ~XTABS;
  93 #endif
  94         returnCode(OK);
  95 }
  96
  97 int restartterm(const char *term, int filenum, int *errret)
  98 {
  99 int saveecho = SP->_echo;
 100 int savecbreak = SP->_cbreak;
 101 int saveraw = SP->_raw;
 102 int savenl = SP->_nl;
 103
 104         T((T_CALLED("restartterm(%s,%d,%p)"), term, filenum, errret));
 105
 106         setupterm(term, filenum, errret);
 107
 108         if (saveecho)
 109                 echo();
 110         else
 111                 noecho();
 112
 113         if (savecbreak) {
 114                 cbreak();
 115                 noraw();
 116         } else if (saveraw) {
 117                 nocbreak();
 118                 raw();
 119         } else {
 120                 nocbreak();
 121                 noraw();
 122         }
 123         if (savenl)
 124                 nl();
 125         else
 126                 nonl();
 127
 128         reset_prog_mode();
 129
 130         _nc_get_screensize();
 131
 132         returnCode(OK);
 133 }
 134
 135 TERMINAL *set_curterm(TERMINAL *term)
 136 {
 137         TERMINAL        *oldterm = cur_term;
 138
 139         cur_term = term;
 140         return oldterm;
 141 }
 142
 143 int del_curterm(TERMINAL *term)
 144 {
 145         T((T_CALLED("del_curterm(%p)"), term));
 146
 147         if (term != NULL) {
 148                 FreeIfNeeded(term->type.str_table);
 149                 FreeIfNeeded(term->type.term_names);
 150                 free(term);
 151                 returnCode(OK);
 152         }
 153         returnCode(ERR);
 154 }