ncurses/tinfo/lib_raw.c

   1 /****************************************************************************
   2  * Copyright (c) 1998 Free Software Foundation, Inc.                        *
   3  *                                                                          *
   4  * Permission is hereby granted, free of charge, to any person obtaining a  *
   5  * copy of this software and associated documentation files (the            *
   6  * "Software"), to deal in the Software without restriction, including      *
   7  * without limitation the rights to use, copy, modify, merge, publish,      *
   8  * distribute, distribute with modifications, sublicense, and/or sell       *
   9  * copies of the Software, and to permit persons to whom the Software is    *
  10  * furnished to do so, subject to the following conditions:                 *
  11  *                                                                          *
  12  * The above copyright notice and this permission notice shall be included  *
  13  * in all copies or substantial portions of the Software.                   *
  14  *                                                                          *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
  17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
  18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
  21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
  22  *                                                                          *
  23  * Except as contained in this notice, the name(s) of the above copyright   *
  24  * holders shall not be used in advertising or otherwise to promote the     *
  25  * sale, use or other dealings in this Software without prior written       *
  26  * authorization.                                                           *
  27  ****************************************************************************/
  28
  29 /****************************************************************************
  30  *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
  31  *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
  32  ****************************************************************************/
  33
  34
  35 /*
  36  *      raw.c
  37  *
  38  *      Routines:
  39  *              raw()
  40  *              cbreak()
  41  *              noraw()
  42  *              nocbreak()
  43  *              qiflush()
  44  *              noqiflush()
  45  *              intrflush()
  46  *
  47  */
  48
  49 #include <curses.priv.h>
  50 #include <term.h>       /* cur_term */
  51
  52 MODULE_ID("$Id: lib_raw.c,v 1.3 1999/03/06 22:28:24 tom Exp $")
  53
  54 #if defined(SVR4_TERMIO) && !defined(_POSIX_SOURCE)
  55 #define _POSIX_SOURCE
  56 #endif
  57
  58 #if HAVE_SYS_TERMIO_H
  59 #include <sys/termio.h> /* needed for ISC */
  60 #endif
  61
  62 #ifdef __EMX__
  63 #include <io.h>
  64 #include <fcntl.h>
  65 #endif
  66
  67 #define COOKED_INPUT    (IXON|BRKINT|PARMRK)
  68
  69 #ifdef TRACE
  70 #define BEFORE(N)       if (_nc_tracing&TRACE_BITS) _tracef("%s before bits: %s", N, _nc_tracebits())
  71 #define AFTER(N)        if (_nc_tracing&TRACE_BITS) _tracef("%s after bits: %s", N, _nc_tracebits())
  72 #else
  73 #define BEFORE(s)
  74 #define AFTER(s)
  75 #endif /* TRACE */
  76
  77 int raw(void)
  78 {
  79         T((T_CALLED("raw()")));
  80         if (SP != 0 && cur_term != 0) {
  81
  82                 SP->_raw = TRUE;
  83                 SP->_cbreak = 1;
  84
  85 #ifdef __EMX__
  86                 setmode(SP->_ifd, O_BINARY);
  87 #endif
  88
  89 #ifdef TERMIOS
  90                 BEFORE("raw");
  91                 cur_term->Nttyb.c_lflag &= ~(ICANON|ISIG);
  92                 cur_term->Nttyb.c_iflag &= ~(COOKED_INPUT);
  93                 cur_term->Nttyb.c_cc[VMIN] = 1;
  94                 cur_term->Nttyb.c_cc[VTIME] = 0;
  95                 AFTER("raw");
  96 #else
  97                 cur_term->Nttyb.sg_flags |= RAW;
  98 #endif
  99                 returnCode(_nc_set_tty_mode(&cur_term->Nttyb));
 100         }
 101         returnCode(ERR);
 102 }
 103
 104 int cbreak(void)
 105 {
 106         T((T_CALLED("cbreak()")));
 107
 108         SP->_cbreak = 1;
 109
 110 #ifdef __EMX__
 111         setmode(SP->_ifd, O_BINARY);
 112 #endif
 113
 114 #ifdef TERMIOS
 115         BEFORE("cbreak");
 116         cur_term->Nttyb.c_lflag &= ~ICANON;
 117         cur_term->Nttyb.c_iflag &= ~ICRNL;
 118         cur_term->Nttyb.c_lflag |= ISIG;
 119         cur_term->Nttyb.c_cc[VMIN] = 1;
 120         cur_term->Nttyb.c_cc[VTIME] = 0;
 121         AFTER("cbreak");
 122 #else
 123         cur_term->Nttyb.sg_flags |= CBREAK;
 124 #endif
 125         returnCode(_nc_set_tty_mode( &cur_term->Nttyb));
 126 }
 127
 128 void qiflush(void)
 129 {
 130         T((T_CALLED("qiflush()")));
 131
 132         /*
 133          * Note: this implementation may be wrong.  See the comment under
 134          * intrflush().
 135          */
 136
 137 #ifdef TERMIOS
 138         BEFORE("qiflush");
 139         cur_term->Nttyb.c_lflag &= ~(NOFLSH);
 140         AFTER("qiflush");
 141         (void)_nc_set_tty_mode( &cur_term->Nttyb);
 142         returnVoid;
 143 #endif
 144 }
 145
 146
 147 int noraw(void)
 148 {
 149         T((T_CALLED("noraw()")));
 150
 151         SP->_raw = FALSE;
 152         SP->_cbreak = 0;
 153
 154 #ifdef __EMX__
 155         setmode(SP->_ifd, O_TEXT);
 156 #endif
 157
 158 #ifdef TERMIOS
 159         BEFORE("noraw");
 160         cur_term->Nttyb.c_lflag |= ISIG|ICANON;
 161         cur_term->Nttyb.c_iflag |= COOKED_INPUT;
 162         AFTER("noraw");
 163 #else
 164         cur_term->Nttyb.sg_flags &= ~(RAW|CBREAK);
 165 #endif
 166         returnCode(_nc_set_tty_mode( &cur_term->Nttyb));
 167 }
 168
 169
 170 int nocbreak(void)
 171 {
 172         T((T_CALLED("nocbreak()")));
 173
 174         SP->_cbreak = 0;
 175
 176 #ifdef __EMX__
 177         setmode(SP->_ifd, O_TEXT);
 178 #endif
 179
 180 #ifdef TERMIOS
 181         BEFORE("nocbreak");
 182         cur_term->Nttyb.c_lflag |= ICANON;
 183         cur_term->Nttyb.c_iflag |= ICRNL;
 184         AFTER("nocbreak");
 185 #else
 186         cur_term->Nttyb.sg_flags &= ~CBREAK;
 187 #endif
 188         returnCode(_nc_set_tty_mode( &cur_term->Nttyb));
 189 }
 190
 191 void noqiflush(void)
 192 {
 193         T((T_CALLED("noqiflush()")));
 194
 195         /*
 196          * Note: this implementation may be wrong.  See the comment under
 197          * intrflush().
 198          */
 199
 200 #ifdef TERMIOS
 201         BEFORE("noqiflush");
 202         cur_term->Nttyb.c_lflag |= NOFLSH;
 203         AFTER("noqiflush");
 204         (void)_nc_set_tty_mode( &cur_term->Nttyb);
 205         returnVoid;
 206 #endif
 207 }
 208
 209 int intrflush(WINDOW *win GCC_UNUSED, bool flag)
 210 {
 211         T((T_CALLED("intrflush(%d)"), flag));
 212
 213         /*
 214          * This call does the same thing as the qiflush()/noqiflush()
 215          * pair.  We know for certain that SVr3 intrflush() tweaks the
 216          * NOFLSH bit; on the other hand, the match (in the SVr4 man
 217          * pages) between the language describing NOFLSH in termio(7)
 218          * and the language describing qiflush()/noqiflush() in
 219          * curs_inopts(3x) is too exact to be coincidence.
 220          */
 221
 222 #ifdef TERMIOS
 223         BEFORE("intrflush");
 224         if (flag)
 225                 cur_term->Nttyb.c_lflag &= ~(NOFLSH);
 226         else
 227                 cur_term->Nttyb.c_lflag |= (NOFLSH);
 228         AFTER("intrflush");
 229         returnCode(_nc_set_tty_mode( &cur_term->Nttyb));
 230 #else
 231         returnCode(ERR);
 232 #endif
 233 }