1 /**************************************************************************** 2 * Copyright (c) 1998-2002,2007 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 * and: Thomas E. Dickey 1998 on * 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 1.14 2007/09/29 21:50:22 tom Exp $") 53 54 #if 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 #define _nc_setmode(mode) setmode(SP->_ifd, mode) 65 #else 66 #define _nc_setmode(mode) /* nothing */ 67 #endif 68 69 #define COOKED_INPUT (IXON|BRKINT|PARMRK) 70 71 #ifdef TRACE 72 #define BEFORE(N) if (USE_TRACEF(TRACE_BITS)) _nc_locked_tracef("%s before bits: %s", N, _nc_tracebits()) 73 #define AFTER(N) if (USE_TRACEF(TRACE_BITS)) _nc_locked_tracef("%s after bits: %s", N, _nc_tracebits()) 74 #else 75 #define BEFORE(s) 76 #define AFTER(s) 77 #endif /* TRACE */ 78 79 NCURSES_EXPORT(int) 80 raw(void) 81 { 82 int result = ERR; 83 84 T((T_CALLED("raw()"))); 85 86 if (SP != 0 && cur_term != 0) { 87 TTY buf; 88 89 BEFORE("raw"); 90 _nc_setmode(O_BINARY); 91 92 buf = cur_term->Nttyb; 93 #ifdef TERMIOS 94 buf.c_lflag &= ~(ICANON | ISIG | IEXTEN); 95 buf.c_iflag &= ~(COOKED_INPUT); 96 buf.c_cc[VMIN] = 1; 97 buf.c_cc[VTIME] = 0; 98 #else 99 buf.sg_flags |= RAW; 100 #endif 101 if ((result = _nc_set_tty_mode(&buf)) == OK) { 102 SP->_raw = TRUE; 103 SP->_cbreak = 1; 104 cur_term->Nttyb = buf; 105 } 106 AFTER("raw"); 107 } 108 returnCode(result); 109 } 110 111 NCURSES_EXPORT(int) 112 cbreak(void) 113 { 114 int result = ERR; 115 116 T((T_CALLED("cbreak()"))); 117 118 if (SP != 0 && cur_term != 0) { 119 TTY buf; 120 121 BEFORE("cbreak"); 122 _nc_setmode(O_BINARY); 123 124 buf = cur_term->Nttyb; 125 #ifdef TERMIOS 126 buf.c_lflag &= ~ICANON; 127 buf.c_iflag &= ~ICRNL; 128 buf.c_lflag |= ISIG; 129 buf.c_cc[VMIN] = 1; 130 buf.c_cc[VTIME] = 0; 131 #else 132 buf.sg_flags |= CBREAK; 133 #endif 134 if ((result = _nc_set_tty_mode(&buf)) == OK) { 135 SP->_cbreak = 1; 136 cur_term->Nttyb = buf; 137 } 138 AFTER("cbreak"); 139 } 140 returnCode(result); 141 } 142 143 /* 144 * Note: 145 * this implementation may be wrong. See the comment under intrflush(). 146 */ 147 NCURSES_EXPORT(void) 148 qiflush(void) 149 { 150 int result = ERR; 151 152 T((T_CALLED("qiflush()"))); 153 154 if (cur_term != 0) { 155 TTY buf; 156 157 BEFORE("qiflush"); 158 buf = cur_term->Nttyb; 159 #ifdef TERMIOS 160 buf.c_lflag &= ~(NOFLSH); 161 result = _nc_set_tty_mode(&buf); 162 #else 163 /* FIXME */ 164 #endif 165 if (result == OK) 166 cur_term->Nttyb = buf; 167 AFTER("qiflush"); 168 } 169 returnVoid; 170 } 171 172 NCURSES_EXPORT(int) 173 noraw(void) 174 { 175 int result = ERR; 176 177 T((T_CALLED("noraw()"))); 178 179 if (SP != 0 && cur_term != 0) { 180 TTY buf; 181 182 BEFORE("noraw"); 183 _nc_setmode(O_TEXT); 184 185 buf = cur_term->Nttyb; 186 #ifdef TERMIOS 187 buf.c_lflag |= ISIG | ICANON | 188 (cur_term->Ottyb.c_lflag & IEXTEN); 189 buf.c_iflag |= COOKED_INPUT; 190 #else 191 buf.sg_flags &= ~(RAW | CBREAK); 192 #endif 193 if ((result = _nc_set_tty_mode(&buf)) == OK) { 194 SP->_raw = FALSE; 195 SP->_cbreak = 0; 196 cur_term->Nttyb = buf; 197 } 198 AFTER("noraw"); 199 } 200 returnCode(result); 201 } 202 203 NCURSES_EXPORT(int) 204 nocbreak(void) 205 { 206 int result = ERR; 207 208 T((T_CALLED("nocbreak()"))); 209 210 if (SP != 0 && cur_term != 0) { 211 TTY buf; 212 213 BEFORE("nocbreak"); 214 _nc_setmode(O_TEXT); 215 216 buf = cur_term->Nttyb; 217 #ifdef TERMIOS 218 buf.c_lflag |= ICANON; 219 buf.c_iflag |= ICRNL; 220 #else 221 buf.sg_flags &= ~CBREAK; 222 #endif 223 if ((result = _nc_set_tty_mode(&buf)) == OK) { 224 SP->_cbreak = 0; 225 cur_term->Nttyb = buf; 226 } 227 AFTER("nocbreak"); 228 } 229 returnCode(result); 230 } 231 232 /* 233 * Note: 234 * this implementation may be wrong. See the comment under intrflush(). 235 */ 236 NCURSES_EXPORT(void) 237 noqiflush(void) 238 { 239 int result = ERR; 240 241 T((T_CALLED("noqiflush()"))); 242 243 if (cur_term != 0) { 244 TTY buf; 245 246 BEFORE("noqiflush"); 247 buf = cur_term->Nttyb; 248 #ifdef TERMIOS 249 buf.c_lflag |= NOFLSH; 250 result = _nc_set_tty_mode(&buf); 251 #else 252 /* FIXME */ 253 #endif 254 if (result == OK) { 255 cur_term->Nttyb = buf; 256 } 257 AFTER("noqiflush"); 258 } 259 returnVoid; 260 } 261 262 /* 263 * This call does the same thing as the qiflush()/noqiflush() pair. We know 264 * for certain that SVr3 intrflush() tweaks the NOFLSH bit; on the other hand, 265 * the match (in the SVr4 man pages) between the language describing NOFLSH in 266 * termio(7) and the language describing qiflush()/noqiflush() in 267 * curs_inopts(3x) is too exact to be coincidence. 268 */ 269 NCURSES_EXPORT(int) 270 intrflush(WINDOW *win GCC_UNUSED, bool flag) 271 { 272 int result = ERR; 273 274 T((T_CALLED("intrflush(%d)"), flag)); 275 276 if (cur_term != 0) { 277 TTY buf; 278 279 BEFORE("intrflush"); 280 buf = cur_term->Nttyb; 281 #ifdef TERMIOS 282 if (flag) 283 buf.c_lflag &= ~(NOFLSH); 284 else 285 buf.c_lflag |= (NOFLSH); 286 result = _nc_set_tty_mode(&buf); 287 #else 288 /* FIXME */ 289 #endif 290 if (result == OK) { 291 cur_term->Nttyb = buf; 292 } 293 AFTER("intrflush"); 294 } 295 returnCode(result); 296 } 297