| | 1 | /* rltty.c -- functions to prepare and restore the terminal for readline's |
| | 2 | use. */ |
| | 3 | |
| | 4 | /* Copyright (C) 1992-2017 Free Software Foundation, Inc. |
| | 5 | |
| | 6 | This file is part of the GNU Readline Library (Readline), a library |
| | 7 | for reading lines of text with interactive input and history editing. |
| | 8 | |
| | 9 | Readline is free software: you can redistribute it and/or modify |
| | 10 | it under the terms of the GNU General Public License as published by |
| | 11 | the Free Software Foundation, either version 3 of the License, or |
| | 12 | (at your option) any later version. |
| | 13 | |
| | 14 | Readline is distributed in the hope that it will be useful, |
| | 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| | 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| | 17 | GNU General Public License for more details. |
| | 18 | |
| | 19 | You should have received a copy of the GNU General Public License |
| | 20 | along with Readline. If not, see <http://www.gnu.org/licenses/>. |
| | 21 | */ |
| | 22 | |
| | 23 | #define READLINE_LIBRARY |
| | 24 | |
| | 25 | #if defined (HAVE_CONFIG_H) |
| | 26 | # include <config.h> |
| | 27 | #endif |
| | 28 | |
| | 29 | #include <sys/types.h> |
| | 30 | #include <signal.h> |
| | 31 | #include <errno.h> |
| | 32 | #include <stdio.h> |
| | 33 | |
| | 34 | #if defined (HAVE_UNISTD_H) |
| | 35 | # include <unistd.h> |
| | 36 | #endif /* HAVE_UNISTD_H */ |
| | 37 | |
| | 38 | #include "rldefs.h" |
| | 39 | |
| | 40 | #include "rltty.h" |
| | 41 | #if defined (HAVE_SYS_IOCTL_H) |
| | 42 | # include <sys/ioctl.h> /* include for declaration of ioctl */ |
| | 43 | #endif |
| | 44 | |
| | 45 | #include "readline.h" |
| | 46 | #include "rlprivate.h" |
| | 47 | |
| | 48 | #if !defined (errno) |
| | 49 | extern int errno; |
| | 50 | #endif /* !errno */ |
| | 51 | |
| | 52 | rl_vintfunc_t *rl_prep_term_function = rl_prep_terminal; |
| | 53 | rl_voidfunc_t *rl_deprep_term_function = rl_deprep_terminal; |
| | 54 | |
| | 55 | static void set_winsize PARAMS((int)); |
| | 56 | |
| | 57 | /* **************************************************************** */ |
| | 58 | /* */ |
| | 59 | /* Saving and Restoring the TTY */ |
| | 60 | /* */ |
| | 61 | /* **************************************************************** */ |
| | 62 | |
| | 63 | /* Non-zero means that the terminal is in a prepped state. There are several |
| | 64 | flags that are OR'd in to denote whether or not we have sent various |
| | 65 | init strings to the terminal. */ |
| | 66 | #define TPX_PREPPED 0x01 |
| | 67 | #define TPX_BRACKPASTE 0x02 |
| | 68 | #define TPX_METAKEY 0x04 |
| | 69 | |
| | 70 | static int terminal_prepped; |
| | 71 | |
| | 72 | static _RL_TTY_CHARS _rl_tty_chars, _rl_last_tty_chars; |
| | 73 | |
| | 74 | /* If non-zero, means that this process has called tcflow(fd, TCOOFF) |
| | 75 | and output is suspended. */ |
| | 76 | #if defined (__ksr1__) |
| | 77 | static int ksrflow; |
| | 78 | #endif |
| | 79 | |
| | 80 | /* Dummy call to force a backgrounded readline to stop before it tries |
| | 81 | to get the tty settings. */ |
| | 82 | static void |
| | 83 | set_winsize (tty) |
| | 84 | int tty; |
| | 85 | { |
| | 86 | #if defined (TIOCGWINSZ) |
| | 87 | struct winsize w; |
| | 88 | |
| | 89 | if (ioctl (tty, TIOCGWINSZ, &w) == 0) |
| | 90 | (void) ioctl (tty, TIOCSWINSZ, &w); |
| | 91 | #endif /* TIOCGWINSZ */ |
| | 92 | } |
| | 93 | |
| | 94 | #if defined (NO_TTY_DRIVER) |
| | 95 | /* Nothing */ |
| | 96 | #elif defined (NEW_TTY_DRIVER) |
| | 97 | |
| | 98 | /* Values for the `flags' field of a struct bsdtty. This tells which |
| | 99 | elements of the struct bsdtty have been fetched from the system and |
| | 100 | are valid. */ |
| | 101 | #define SGTTY_SET 0x01 |
| | 102 | #define LFLAG_SET 0x02 |
| | 103 | #define TCHARS_SET 0x04 |
| | 104 | #define LTCHARS_SET 0x08 |
| | 105 | |
| | 106 | struct bsdtty { |
| | 107 | struct sgttyb sgttyb; /* Basic BSD tty driver information. */ |
| | 108 | int lflag; /* Local mode flags, like LPASS8. */ |
| | 109 | #if defined (TIOCGETC) |
| | 110 | struct tchars tchars; /* Terminal special characters, including ^S and ^Q. */ |
| | 111 | #endif |
| | 112 | #if defined (TIOCGLTC) |
| | 113 | struct ltchars ltchars; /* 4.2 BSD editing characters */ |
| | 114 | #endif |
| | 115 | int flags; /* Bitmap saying which parts of the struct are valid. */ |
| | 116 | }; |
| | 117 | |
| | 118 | #define TIOTYPE struct bsdtty |
| | 119 | |
| | 120 | static TIOTYPE otio; |
| | 121 | |
| | 122 | static void save_tty_chars PARAMS((TIOTYPE *)); |
| | 123 | static int _get_tty_settings PARAMS((int, TIOTYPE *)); |
| | 124 | static int get_tty_settings PARAMS((int, TIOTYPE *)); |
| | 125 | static int _set_tty_settings PARAMS((int, TIOTYPE *)); |
| | 126 | static int set_tty_settings PARAMS((int, TIOTYPE *)); |
| | 127 | |
| | 128 | static void prepare_terminal_settings PARAMS((int, TIOTYPE, TIOTYPE *)); |
| | 129 | |
| | 130 | static void set_special_char PARAMS((Keymap, TIOTYPE *, int, rl_command_func_t *)); |
| | 131 | |
| | 132 | static void |
| | 133 | save_tty_chars (TIOTYPE *tiop) |
| | 134 | { |
| | 135 | _rl_last_tty_chars = _rl_tty_chars; |
| | 136 | |
| | 137 | if (tiop->flags & SGTTY_SET) |
| | 138 | { |
| | 139 | _rl_tty_chars.t_erase = tiop->sgttyb.sg_erase; |
| | 140 | _rl_tty_chars.t_kill = tiop->sgttyb.sg_kill; |
| | 141 | } |
| | 142 | |
| | 143 | if (tiop->flags & TCHARS_SET) |
| | 144 | { |
| | 145 | _rl_intr_char = _rl_tty_chars.t_intr = tiop->tchars.t_intrc; |
| | 146 | _rl_quit_char = _rl_tty_chars.t_quit = tiop->tchars.t_quitc; |
| | 147 | |
| | 148 | _rl_tty_chars.t_start = tiop->tchars.t_startc; |
| | 149 | _rl_tty_chars.t_stop = tiop->tchars.t_stopc; |
| | 150 | _rl_tty_chars.t_eof = tiop->tchars.t_eofc; |
| | 151 | _rl_tty_chars.t_eol = '\n'; |
| | 152 | _rl_tty_chars.t_eol2 = tiop->tchars.t_brkc; |
| | 153 | } |
| | 154 | |
| | 155 | if (tiop->flags & LTCHARS_SET) |
| | 156 | { |
| | 157 | _rl_susp_char = _rl_tty_chars.t_susp = tiop->ltchars.t_suspc; |
| | 158 | |
| | 159 | _rl_tty_chars.t_dsusp = tiop->ltchars.t_dsuspc; |
| | 160 | _rl_tty_chars.t_reprint = tiop->ltchars.t_rprntc; |
| | 161 | _rl_tty_chars.t_flush = tiop->ltchars.t_flushc; |
| | 162 | _rl_tty_chars.t_werase = tiop->ltchars.t_werasc; |
| | 163 | _rl_tty_chars.t_lnext = tiop->ltchars.t_lnextc; |
| | 164 | } |
| | 165 | |
| | 166 | _rl_tty_chars.t_status = -1; |
| | 167 | } |
| | 168 | |
| | 169 | static int |
| | 170 | get_tty_settings (int tty, TIOTYPE *tiop) |
| | 171 | { |
| | 172 | set_winsize (tty); |
| | 173 | |
| | 174 | tiop->flags = tiop->lflag = 0; |
| | 175 | |
| | 176 | errno = 0; |
| | 177 | if (ioctl (tty, TIOCGETP, &(tiop->sgttyb)) < 0) |
| | 178 | return -1; |
| | 179 | tiop->flags |= SGTTY_SET; |
| | 180 | |
| | 181 | #if defined (TIOCLGET) |
| | 182 | if (ioctl (tty, TIOCLGET, &(tiop->lflag)) == 0) |
| | 183 | tiop->flags |= LFLAG_SET; |
| | 184 | #endif |
| | 185 | |
| | 186 | #if defined (TIOCGETC) |
| | 187 | if (ioctl (tty, TIOCGETC, &(tiop->tchars)) == 0) |
| | 188 | tiop->flags |= TCHARS_SET; |
| | 189 | #endif |
| | 190 | |
| | 191 | #if defined (TIOCGLTC) |
| | 192 | if (ioctl (tty, TIOCGLTC, &(tiop->ltchars)) == 0) |
| | 193 | tiop->flags |= LTCHARS_SET; |
| | 194 | #endif |
| | 195 | |
| | 196 | return 0; |
| | 197 | } |
| | 198 | |
| | 199 | static int |
| | 200 | set_tty_settings (int tty, TIOTYPE *tiop) |
| | 201 | { |
| | 202 | if (tiop->flags & SGTTY_SET) |
| | 203 | { |
| | 204 | ioctl (tty, TIOCSETN, &(tiop->sgttyb)); |
| | 205 | tiop->flags &= ~SGTTY_SET; |
| | 206 | } |
| | 207 | _rl_echoing_p = 1; |
| | 208 | |
| | 209 | #if defined (TIOCLSET) |
| | 210 | if (tiop->flags & LFLAG_SET) |
| | 211 | { |
| | 212 | ioctl (tty, TIOCLSET, &(tiop->lflag)); |
| | 213 | tiop->flags &= ~LFLAG_SET; |
| | 214 | } |
| | 215 | #endif |
| | 216 | |
| | 217 | #if defined (TIOCSETC) |
| | 218 | if (tiop->flags & TCHARS_SET) |
| | 219 | { |
| | 220 | ioctl (tty, TIOCSETC, &(tiop->tchars)); |
| | 221 | tiop->flags &= ~TCHARS_SET; |
| | 222 | } |
| | 223 | #endif |
| | 224 | |
| | 225 | #if defined (TIOCSLTC) |
| | 226 | if (tiop->flags & LTCHARS_SET) |
| | 227 | { |
| | 228 | ioctl (tty, TIOCSLTC, &(tiop->ltchars)); |
| | 229 | tiop->flags &= ~LTCHARS_SET; |
| | 230 | } |
| | 231 | #endif |
| | 232 | |
| | 233 | return 0; |
| | 234 | } |
| | 235 | |
| | 236 | static void |
| | 237 | prepare_terminal_settings (int meta_flag, TIOTYPE oldtio, TIOTYPE *tiop) |
| | 238 | { |
| | 239 | _rl_echoing_p = (oldtio.sgttyb.sg_flags & ECHO); |
| | 240 | _rl_echoctl = (oldtio.sgttyb.sg_flags & ECHOCTL); |
| | 241 | |
| | 242 | /* Copy the original settings to the structure we're going to use for |
| | 243 | our settings. */ |
| | 244 | tiop->sgttyb = oldtio.sgttyb; |
| | 245 | tiop->lflag = oldtio.lflag; |
| | 246 | #if defined (TIOCGETC) |
| | 247 | tiop->tchars = oldtio.tchars; |
| | 248 | #endif |
| | 249 | #if defined (TIOCGLTC) |
| | 250 | tiop->ltchars = oldtio.ltchars; |
| | 251 | #endif |
| | 252 | tiop->flags = oldtio.flags; |
| | 253 | |
| | 254 | /* First, the basic settings to put us into character-at-a-time, no-echo |
| | 255 | input mode. */ |
| | 256 | tiop->sgttyb.sg_flags &= ~(ECHO | CRMOD); |
| | 257 | tiop->sgttyb.sg_flags |= CBREAK; |
| | 258 | |
| | 259 | /* If this terminal doesn't care how the 8th bit is used, then we can |
| | 260 | use it for the meta-key. If only one of even or odd parity is |
| | 261 | specified, then the terminal is using parity, and we cannot. */ |
| | 262 | #if !defined (ANYP) |
| | 263 | # define ANYP (EVENP | ODDP) |
| | 264 | #endif |
| | 265 | if (((oldtio.sgttyb.sg_flags & ANYP) == ANYP) || |
| | 266 | ((oldtio.sgttyb.sg_flags & ANYP) == 0)) |
| | 267 | { |
| | 268 | tiop->sgttyb.sg_flags |= ANYP; |
| | 269 | |
| | 270 | /* Hack on local mode flags if we can. */ |
| | 271 | #if defined (TIOCLGET) |
| | 272 | # if defined (LPASS8) |
| | 273 | tiop->lflag |= LPASS8; |
| | 274 | # endif /* LPASS8 */ |
| | 275 | #endif /* TIOCLGET */ |
| | 276 | } |
| | 277 | |
| | 278 | #if defined (TIOCGETC) |
| | 279 | # if defined (USE_XON_XOFF) |
| | 280 | /* Get rid of terminal output start and stop characters. */ |
| | 281 | tiop->tchars.t_stopc = -1; /* C-s */ |
| | 282 | tiop->tchars.t_startc = -1; /* C-q */ |
| | 283 | |
| | 284 | /* If there is an XON character, bind it to restart the output. */ |
| | 285 | if (oldtio.tchars.t_startc != -1) |
| | 286 | rl_bind_key (oldtio.tchars.t_startc, rl_restart_output); |
| | 287 | # endif /* USE_XON_XOFF */ |
| | 288 | |
| | 289 | /* If there is an EOF char, bind _rl_eof_char to it. */ |
| | 290 | if (oldtio.tchars.t_eofc != -1) |
| | 291 | _rl_eof_char = oldtio.tchars.t_eofc; |
| | 292 | |
| | 293 | # if defined (NO_KILL_INTR) |
| | 294 | /* Get rid of terminal-generated SIGQUIT and SIGINT. */ |
| | 295 | tiop->tchars.t_quitc = -1; /* C-\ */ |
| | 296 | tiop->tchars.t_intrc = -1; /* C-c */ |
| | 297 | # endif /* NO_KILL_INTR */ |
| | 298 | #endif /* TIOCGETC */ |
| | 299 | |
| | 300 | #if defined (TIOCGLTC) |
| | 301 | /* Make the interrupt keys go away. Just enough to make people happy. */ |
| | 302 | tiop->ltchars.t_dsuspc = -1; /* C-y */ |
| | 303 | tiop->ltchars.t_lnextc = -1; /* C-v */ |
| | 304 | #endif /* TIOCGLTC */ |
| | 305 | } |
| | 306 | |
| | 307 | #else /* !defined (NEW_TTY_DRIVER) */ |
| | 308 | |
| | 309 | #if !defined (VMIN) |
| | 310 | # define VMIN VEOF |
| | 311 | #endif |
| | 312 | |
| | 313 | #if !defined (VTIME) |
| | 314 | # define VTIME VEOL |
| | 315 | #endif |
| | 316 | |
| | 317 | #if defined (TERMIOS_TTY_DRIVER) |
| | 318 | # define TIOTYPE struct termios |
| | 319 | # define DRAIN_OUTPUT(fd) tcdrain (fd) |
| | 320 | # define GETATTR(tty, tiop) (tcgetattr (tty, tiop)) |
| | 321 | # ifdef M_UNIX |
| | 322 | # define SETATTR(tty, tiop) (tcsetattr (tty, TCSANOW, tiop)) |
| | 323 | # else |
| | 324 | # define SETATTR(tty, tiop) (tcsetattr (tty, TCSADRAIN, tiop)) |
| | 325 | # endif /* !M_UNIX */ |
| | 326 | #else |
| | 327 | # define TIOTYPE struct termio |
| | 328 | # define DRAIN_OUTPUT(fd) |
| | 329 | # define GETATTR(tty, tiop) (ioctl (tty, TCGETA, tiop)) |
| | 330 | # define SETATTR(tty, tiop) (ioctl (tty, TCSETAW, tiop)) |
| | 331 | #endif /* !TERMIOS_TTY_DRIVER */ |
| | 332 | |
| | 333 | static TIOTYPE otio; |
| | 334 | |
| | 335 | static void save_tty_chars PARAMS((TIOTYPE *)); |
| | 336 | static int _get_tty_settings PARAMS((int, TIOTYPE *)); |
| | 337 | static int get_tty_settings PARAMS((int, TIOTYPE *)); |
| | 338 | static int _set_tty_settings PARAMS((int, TIOTYPE *)); |
| | 339 | static int set_tty_settings PARAMS((int, TIOTYPE *)); |
| | 340 | |
| | 341 | static void prepare_terminal_settings PARAMS((int, TIOTYPE, TIOTYPE *)); |
| | 342 | |
| | 343 | static void set_special_char PARAMS((Keymap, TIOTYPE *, int, rl_command_func_t *)); |
| | 344 | static void _rl_bind_tty_special_chars PARAMS((Keymap, TIOTYPE)); |
| | 345 | |
| | 346 | #if defined (FLUSHO) |
| | 347 | # define OUTPUT_BEING_FLUSHED(tp) (tp->c_lflag & FLUSHO) |
| | 348 | #else |
| | 349 | # define OUTPUT_BEING_FLUSHED(tp) 0 |
| | 350 | #endif |
| | 351 | |
| | 352 | static void |
| | 353 | save_tty_chars (TIOTYPE *tiop) |
| | 354 | { |
| | 355 | _rl_last_tty_chars = _rl_tty_chars; |
| | 356 | |
| | 357 | _rl_tty_chars.t_eof = tiop->c_cc[VEOF]; |
| | 358 | _rl_tty_chars.t_eol = tiop->c_cc[VEOL]; |
| | 359 | #ifdef VEOL2 |
| | 360 | _rl_tty_chars.t_eol2 = tiop->c_cc[VEOL2]; |
| | 361 | #endif |
| | 362 | _rl_tty_chars.t_erase = tiop->c_cc[VERASE]; |
| | 363 | #ifdef VWERASE |
| | 364 | _rl_tty_chars.t_werase = tiop->c_cc[VWERASE]; |
| | 365 | #endif |
| | 366 | _rl_tty_chars.t_kill = tiop->c_cc[VKILL]; |
| | 367 | #ifdef VREPRINT |
| | 368 | _rl_tty_chars.t_reprint = tiop->c_cc[VREPRINT]; |
| | 369 | #endif |
| | 370 | _rl_intr_char = _rl_tty_chars.t_intr = tiop->c_cc[VINTR]; |
| | 371 | _rl_quit_char = _rl_tty_chars.t_quit = tiop->c_cc[VQUIT]; |
| | 372 | #ifdef VSUSP |
| | 373 | _rl_susp_char = _rl_tty_chars.t_susp = tiop->c_cc[VSUSP]; |
| | 374 | #endif |
| | 375 | #ifdef VDSUSP |
| | 376 | _rl_tty_chars.t_dsusp = tiop->c_cc[VDSUSP]; |
| | 377 | #endif |
| | 378 | #ifdef VSTART |
| | 379 | _rl_tty_chars.t_start = tiop->c_cc[VSTART]; |
| | 380 | #endif |
| | 381 | #ifdef VSTOP |
| | 382 | _rl_tty_chars.t_stop = tiop->c_cc[VSTOP]; |
| | 383 | #endif |
| | 384 | #ifdef VLNEXT |
| | 385 | _rl_tty_chars.t_lnext = tiop->c_cc[VLNEXT]; |
| | 386 | #endif |
| | 387 | #ifdef VDISCARD |
| | 388 | _rl_tty_chars.t_flush = tiop->c_cc[VDISCARD]; |
| | 389 | #endif |
| | 390 | #ifdef VSTATUS |
| | 391 | _rl_tty_chars.t_status = tiop->c_cc[VSTATUS]; |
| | 392 | #endif |
| | 393 | } |
| | 394 | |
| | 395 | #if defined (_AIX) || defined (_AIX41) |
| | 396 | /* Currently this is only used on AIX */ |
| | 397 | static void |
| | 398 | rltty_warning (char *msg) |
| | 399 | { |
| | 400 | _rl_errmsg ("warning: %s", msg); |
| | 401 | } |
| | 402 | #endif |
| | 403 | |
| | 404 | #if defined (_AIX) |
| | 405 | void |
| | 406 | setopost (TIOTYPE *tp) |
| | 407 | { |
| | 408 | if ((tp->c_oflag & OPOST) == 0) |
| | 409 | { |
| | 410 | _rl_errmsg ("warning: turning on OPOST for terminal\r"); |
| | 411 | tp->c_oflag |= OPOST|ONLCR; |
| | 412 | } |
| | 413 | } |
| | 414 | #endif |
| | 415 | |
| | 416 | static int |
| | 417 | _get_tty_settings (int tty, TIOTYPE *tiop) |
| | 418 | { |
| | 419 | int ioctl_ret; |
| | 420 | |
| | 421 | while (1) |
| | 422 | { |
| | 423 | ioctl_ret = GETATTR (tty, tiop); |
| | 424 | if (ioctl_ret < 0) |
| | 425 | { |
| | 426 | if (errno != EINTR) |
| | 427 | return -1; |
| | 428 | else |
| | 429 | continue; |
| | 430 | } |
| | 431 | if (OUTPUT_BEING_FLUSHED (tiop)) |
| | 432 | { |
| | 433 | #if defined (FLUSHO) |
| | 434 | _rl_errmsg ("warning: turning off output flushing"); |
| | 435 | tiop->c_lflag &= ~FLUSHO; |
| | 436 | break; |
| | 437 | #else |
| | 438 | continue; |
| | 439 | #endif |
| | 440 | } |
| | 441 | break; |
| | 442 | } |
| | 443 | |
| | 444 | return 0; |
| | 445 | } |
| | 446 | |
| | 447 | static int |
| | 448 | get_tty_settings (int tty, TIOTYPE *tiop) |
| | 449 | { |
| | 450 | set_winsize (tty); |
| | 451 | |
| | 452 | errno = 0; |
| | 453 | if (_get_tty_settings (tty, tiop) < 0) |
| | 454 | return -1; |
| | 455 | |
| | 456 | #if defined (_AIX) |
| | 457 | setopost(tiop); |
| | 458 | #endif |
| | 459 | |
| | 460 | return 0; |
| | 461 | } |
| | 462 | |
| | 463 | static int |
| | 464 | _set_tty_settings (int tty, TIOTYPE *tiop) |
| | 465 | { |
| | 466 | while (SETATTR (tty, tiop) < 0) |
| | 467 | { |
| | 468 | if (errno != EINTR) |
| | 469 | return -1; |
| | 470 | errno = 0; |
| | 471 | } |
| | 472 | return 0; |
| | 473 | } |
| | 474 | |
| | 475 | static int |
| | 476 | set_tty_settings (int tty, TIOTYPE *tiop) |
| | 477 | { |
| | 478 | if (_set_tty_settings (tty, tiop) < 0) |
| | 479 | return -1; |
| | 480 | |
| | 481 | #if 0 |
| | 482 | |
| | 483 | #if defined (TERMIOS_TTY_DRIVER) |
| | 484 | # if defined (__ksr1__) |
| | 485 | if (ksrflow) |
| | 486 | { |
| | 487 | ksrflow = 0; |
| | 488 | tcflow (tty, TCOON); |
| | 489 | } |
| | 490 | # else /* !ksr1 */ |
| | 491 | tcflow (tty, TCOON); /* Simulate a ^Q. */ |
| | 492 | # endif /* !ksr1 */ |
| | 493 | #else |
| | 494 | ioctl (tty, TCXONC, 1); /* Simulate a ^Q. */ |
| | 495 | #endif /* !TERMIOS_TTY_DRIVER */ |
| | 496 | |
| | 497 | #endif /* 0 */ |
| | 498 | |
| | 499 | return 0; |
| | 500 | } |
| | 501 | |
| | 502 | static void |
| | 503 | prepare_terminal_settings (int meta_flag, TIOTYPE oldtio, TIOTYPE *tiop) |
| | 504 | { |
| | 505 | int sc; |
| | 506 | Keymap kmap; |
| | 507 | |
| | 508 | _rl_echoing_p = (oldtio.c_lflag & ECHO); |
| | 509 | #if defined (ECHOCTL) |
| | 510 | _rl_echoctl = (oldtio.c_lflag & ECHOCTL); |
| | 511 | #endif |
| | 512 | |
| | 513 | tiop->c_lflag &= ~(ICANON | ECHO); |
| | 514 | |
| | 515 | if ((unsigned char) oldtio.c_cc[VEOF] != (unsigned char) _POSIX_VDISABLE) |
| | 516 | _rl_eof_char = oldtio.c_cc[VEOF]; |
| | 517 | |
| | 518 | #if defined (USE_XON_XOFF) |
| | 519 | #if defined (IXANY) |
| | 520 | tiop->c_iflag &= ~(IXON | IXANY); |
| | 521 | #else |
| | 522 | /* `strict' Posix systems do not define IXANY. */ |
| | 523 | tiop->c_iflag &= ~IXON; |
| | 524 | #endif /* IXANY */ |
| | 525 | #endif /* USE_XON_XOFF */ |
| | 526 | |
| | 527 | /* Only turn this off if we are using all 8 bits. */ |
| | 528 | if (((tiop->c_cflag & CSIZE) == CS8) || meta_flag) |
| | 529 | tiop->c_iflag &= ~(ISTRIP | INPCK); |
| | 530 | |
| | 531 | /* Make sure we differentiate between CR and NL on input. */ |
| | 532 | tiop->c_iflag &= ~(ICRNL | INLCR); |
| | 533 | |
| | 534 | #if !defined (HANDLE_SIGNALS) |
| | 535 | tiop->c_lflag &= ~ISIG; |
| | 536 | #else |
| | 537 | tiop->c_lflag |= ISIG; |
| | 538 | #endif |
| | 539 | |
| | 540 | tiop->c_cc[VMIN] = 1; |
| | 541 | tiop->c_cc[VTIME] = 0; |
| | 542 | |
| | 543 | #if defined (FLUSHO) |
| | 544 | if (OUTPUT_BEING_FLUSHED (tiop)) |
| | 545 | { |
| | 546 | tiop->c_lflag &= ~FLUSHO; |
| | 547 | oldtio.c_lflag &= ~FLUSHO; |
| | 548 | } |
| | 549 | #endif |
| | 550 | |
| | 551 | /* Turn off characters that we need on Posix systems with job control, |
| | 552 | just to be sure. This includes ^Y and ^V. This should not really |
| | 553 | be necessary. */ |
| | 554 | #if defined (TERMIOS_TTY_DRIVER) && defined (_POSIX_VDISABLE) |
| | 555 | |
| | 556 | #if defined (VLNEXT) |
| | 557 | tiop->c_cc[VLNEXT] = _POSIX_VDISABLE; |
| | 558 | #endif |
| | 559 | |
| | 560 | #if defined (VDSUSP) |
| | 561 | tiop->c_cc[VDSUSP] = _POSIX_VDISABLE; |
| | 562 | #endif |
| | 563 | |
| | 564 | /* Conditionally disable some other tty special characters if there is a |
| | 565 | key binding for them in the current keymap. Readline ordinarily doesn't |
| | 566 | bind these characters, but an application or user might. */ |
| | 567 | #if defined (VI_MODE) |
| | 568 | kmap = (rl_editing_mode == vi_mode) ? vi_insertion_keymap : _rl_keymap; |
| | 569 | #else |
| | 570 | kmap = _rl_keymap; |
| | 571 | #endif |
| | 572 | #if defined (VDISCARD) |
| | 573 | sc = tiop->c_cc[VDISCARD]; |
| | 574 | if (sc != _POSIX_VDISABLE && kmap[(unsigned char)sc].type == ISFUNC) |
| | 575 | tiop->c_cc[VDISCARD] = _POSIX_VDISABLE; |
| | 576 | #endif /* VDISCARD */ |
| | 577 | |
| | 578 | #endif /* TERMIOS_TTY_DRIVER && _POSIX_VDISABLE */ |
| | 579 | } |
| | 580 | #endif /* !NEW_TTY_DRIVER */ |
| | 581 | |
| | 582 | /* Put the terminal in CBREAK mode so that we can detect key presses. */ |
| | 583 | #if defined (NO_TTY_DRIVER) |
| | 584 | void |
| | 585 | rl_prep_terminal (int meta_flag) |
| | 586 | { |
| | 587 | _rl_echoing_p = 1; |
| | 588 | } |
| | 589 | |
| | 590 | void |
| | 591 | rl_deprep_terminal (void) |
| | 592 | { |
| | 593 | } |
| | 594 | |
| | 595 | #else /* ! NO_TTY_DRIVER */ |
| | 596 | void |
| | 597 | rl_prep_terminal (int meta_flag) |
| | 598 | { |
| | 599 | int tty, nprep; |
| | 600 | TIOTYPE tio; |
| | 601 | |
| | 602 | if (terminal_prepped) |
| | 603 | return; |
| | 604 | |
| | 605 | /* Try to keep this function from being INTerrupted. */ |
| | 606 | _rl_block_sigint (); |
| | 607 | |
| | 608 | tty = rl_instream ? fileno (rl_instream) : fileno (stdin); |
| | 609 | |
| | 610 | if (get_tty_settings (tty, &tio) < 0) |
| | 611 | { |
| | 612 | #if defined (ENOTSUP) |
| | 613 | /* MacOS X and Linux, at least, lie about the value of errno if |
| | 614 | tcgetattr fails. */ |
| | 615 | if (errno == ENOTTY || errno == EINVAL || errno == ENOTSUP) |
| | 616 | #else |
| | 617 | if (errno == ENOTTY || errno == EINVAL) |
| | 618 | #endif |
| | 619 | _rl_echoing_p = 1; /* XXX */ |
| | 620 | |
| | 621 | _rl_release_sigint (); |
| | 622 | return; |
| | 623 | } |
| | 624 | |
| | 625 | otio = tio; |
| | 626 | |
| | 627 | if (_rl_bind_stty_chars) |
| | 628 | { |
| | 629 | #if defined (VI_MODE) |
| | 630 | /* If editing in vi mode, make sure we restore the bindings in the |
| | 631 | insertion keymap no matter what keymap we ended up in. */ |
| | 632 | if (rl_editing_mode == vi_mode) |
| | 633 | rl_tty_unset_default_bindings (vi_insertion_keymap); |
| | 634 | else |
| | 635 | #endif |
| | 636 | rl_tty_unset_default_bindings (_rl_keymap); |
| | 637 | } |
| | 638 | save_tty_chars (&otio); |
| | 639 | RL_SETSTATE(RL_STATE_TTYCSAVED); |
| | 640 | if (_rl_bind_stty_chars) |
| | 641 | { |
| | 642 | #if defined (VI_MODE) |
| | 643 | /* If editing in vi mode, make sure we set the bindings in the |
| | 644 | insertion keymap no matter what keymap we ended up in. */ |
| | 645 | if (rl_editing_mode == vi_mode) |
| | 646 | _rl_bind_tty_special_chars (vi_insertion_keymap, tio); |
| | 647 | else |
| | 648 | #endif |
| | 649 | _rl_bind_tty_special_chars (_rl_keymap, tio); |
| | 650 | } |
| | 651 | |
| | 652 | prepare_terminal_settings (meta_flag, otio, &tio); |
| | 653 | |
| | 654 | if (set_tty_settings (tty, &tio) < 0) |
| | 655 | { |
| | 656 | _rl_release_sigint (); |
| | 657 | return; |
| | 658 | } |
| | 659 | |
| | 660 | if (_rl_enable_keypad) |
| | 661 | _rl_control_keypad (1); |
| | 662 | |
| | 663 | nprep = TPX_PREPPED; |
| | 664 | |
| | 665 | if (_rl_enable_bracketed_paste) |
| | 666 | { |
| | 667 | fprintf (rl_outstream, BRACK_PASTE_INIT); |
| | 668 | nprep |= TPX_BRACKPASTE; |
| | 669 | } |
| | 670 | |
| | 671 | fflush (rl_outstream); |
| | 672 | terminal_prepped = nprep; |
| | 673 | RL_SETSTATE(RL_STATE_TERMPREPPED); |
| | 674 | |
| | 675 | _rl_release_sigint (); |
| | 676 | } |
| | 677 | |
| | 678 | /* Restore the terminal's normal settings and modes. */ |
| | 679 | void |
| | 680 | rl_deprep_terminal (void) |
| | 681 | { |
| | 682 | int tty; |
| | 683 | |
| | 684 | if (terminal_prepped == 0) |
| | 685 | return; |
| | 686 | |
| | 687 | /* Try to keep this function from being interrupted. */ |
| | 688 | _rl_block_sigint (); |
| | 689 | |
| | 690 | tty = rl_instream ? fileno (rl_instream) : fileno (stdin); |
| | 691 | |
| | 692 | if (terminal_prepped & TPX_BRACKPASTE) |
| | 693 | { |
| | 694 | fprintf (rl_outstream, BRACK_PASTE_FINI); |
| | 695 | if (_rl_eof_found) |
| | 696 | fprintf (rl_outstream, "\n"); |
| | 697 | } |
| | 698 | |
| | 699 | if (_rl_enable_keypad) |
| | 700 | _rl_control_keypad (0); |
| | 701 | |
| | 702 | fflush (rl_outstream); |
| | 703 | |
| | 704 | if (set_tty_settings (tty, &otio) < 0) |
| | 705 | { |
| | 706 | _rl_release_sigint (); |
| | 707 | return; |
| | 708 | } |
| | 709 | |
| | 710 | terminal_prepped = 0; |
| | 711 | RL_UNSETSTATE(RL_STATE_TERMPREPPED); |
| | 712 | |
| | 713 | _rl_release_sigint (); |
| | 714 | } |
| | 715 | #endif /* !NO_TTY_DRIVER */ |
| | 716 | |
| | 717 | /* Set readline's idea of whether or not it is echoing output to the terminal, |
| | 718 | returning the old value. */ |
| | 719 | int |
| | 720 | rl_tty_set_echoing (int u) |
| | 721 | { |
| | 722 | int o; |
| | 723 | |
| | 724 | o = _rl_echoing_p; |
| | 725 | _rl_echoing_p = u; |
| | 726 | return o; |
| | 727 | } |
| | 728 | \f |
| | 729 | /* **************************************************************** */ |
| | 730 | /* */ |
| | 731 | /* Bogus Flow Control */ |
| | 732 | /* */ |
| | 733 | /* **************************************************************** */ |
| | 734 | |
| | 735 | int |
| | 736 | rl_restart_output (int count, int key) |
| | 737 | { |
| | 738 | #if defined (__MINGW32__) |
| | 739 | return 0; |
| | 740 | #else /* !__MING32__ */ |
| | 741 | |
| | 742 | int fildes = fileno (rl_outstream); |
| | 743 | #if defined (TIOCSTART) |
| | 744 | #if defined (apollo) |
| | 745 | ioctl (&fildes, TIOCSTART, 0); |
| | 746 | #else |
| | 747 | ioctl (fildes, TIOCSTART, 0); |
| | 748 | #endif /* apollo */ |
| | 749 | |
| | 750 | #else /* !TIOCSTART */ |
| | 751 | # if defined (TERMIOS_TTY_DRIVER) |
| | 752 | # if defined (__ksr1__) |
| | 753 | if (ksrflow) |
| | 754 | { |
| | 755 | ksrflow = 0; |
| | 756 | tcflow (fildes, TCOON); |
| | 757 | } |
| | 758 | # else /* !ksr1 */ |
| | 759 | tcflow (fildes, TCOON); /* Simulate a ^Q. */ |
| | 760 | # endif /* !ksr1 */ |
| | 761 | # else /* !TERMIOS_TTY_DRIVER */ |
| | 762 | # if defined (TCXONC) |
| | 763 | ioctl (fildes, TCXONC, TCOON); |
| | 764 | # endif /* TCXONC */ |
| | 765 | # endif /* !TERMIOS_TTY_DRIVER */ |
| | 766 | #endif /* !TIOCSTART */ |
| | 767 | |
| | 768 | return 0; |
| | 769 | #endif /* !__MINGW32__ */ |
| | 770 | } |
| | 771 | |
| | 772 | int |
| | 773 | rl_stop_output (int count, int key) |
| | 774 | { |
| | 775 | #if defined (__MINGW32__) |
| | 776 | return 0; |
| | 777 | #else |
| | 778 | |
| | 779 | int fildes = fileno (rl_instream); |
| | 780 | |
| | 781 | #if defined (TIOCSTOP) |
| | 782 | # if defined (apollo) |
| | 783 | ioctl (&fildes, TIOCSTOP, 0); |
| | 784 | # else |
| | 785 | ioctl (fildes, TIOCSTOP, 0); |
| | 786 | # endif /* apollo */ |
| | 787 | #else /* !TIOCSTOP */ |
| | 788 | # if defined (TERMIOS_TTY_DRIVER) |
| | 789 | # if defined (__ksr1__) |
| | 790 | ksrflow = 1; |
| | 791 | # endif /* ksr1 */ |
| | 792 | tcflow (fildes, TCOOFF); |
| | 793 | # else |
| | 794 | # if defined (TCXONC) |
| | 795 | ioctl (fildes, TCXONC, TCOON); |
| | 796 | # endif /* TCXONC */ |
| | 797 | # endif /* !TERMIOS_TTY_DRIVER */ |
| | 798 | #endif /* !TIOCSTOP */ |
| | 799 | |
| | 800 | return 0; |
| | 801 | #endif /* !__MINGW32__ */ |
| | 802 | } |
| | 803 | |
| | 804 | /* **************************************************************** */ |
| | 805 | /* */ |
| | 806 | /* Default Key Bindings */ |
| | 807 | /* */ |
| | 808 | /* **************************************************************** */ |
| | 809 | |
| | 810 | #if !defined (NO_TTY_DRIVER) |
| | 811 | #define SET_SPECIAL(sc, func) set_special_char(kmap, &ttybuff, sc, func) |
| | 812 | #endif |
| | 813 | |
| | 814 | #if defined (NO_TTY_DRIVER) |
| | 815 | |
| | 816 | #define SET_SPECIAL(sc, func) |
| | 817 | #define RESET_SPECIAL(c) |
| | 818 | |
| | 819 | #elif defined (NEW_TTY_DRIVER) |
| | 820 | static void |
| | 821 | set_special_char (Keymap kmap, TIOTYPE *tiop, int sc, rl_command_func_t *func) |
| | 822 | { |
| | 823 | if (sc != -1 && kmap[(unsigned char)sc].type == ISFUNC) |
| | 824 | kmap[(unsigned char)sc].function = func; |
| | 825 | } |
| | 826 | |
| | 827 | #define RESET_SPECIAL(c) \ |
| | 828 | if (c != -1 && kmap[(unsigned char)c].type == ISFUNC) \ |
| | 829 | kmap[(unsigned char)c].function = rl_insert; |
| | 830 | |
| | 831 | static void |
| | 832 | _rl_bind_tty_special_chars (Keymap kmap, TIOTYPE ttybuff) |
| | 833 | { |
| | 834 | if (ttybuff.flags & SGTTY_SET) |
| | 835 | { |
| | 836 | SET_SPECIAL (ttybuff.sgttyb.sg_erase, rl_rubout); |
| | 837 | SET_SPECIAL (ttybuff.sgttyb.sg_kill, rl_unix_line_discard); |
| | 838 | } |
| | 839 | |
| | 840 | # if defined (TIOCGLTC) |
| | 841 | if (ttybuff.flags & LTCHARS_SET) |
| | 842 | { |
| | 843 | SET_SPECIAL (ttybuff.ltchars.t_werasc, rl_unix_word_rubout); |
| | 844 | SET_SPECIAL (ttybuff.ltchars.t_lnextc, rl_quoted_insert); |
| | 845 | } |
| | 846 | # endif /* TIOCGLTC */ |
| | 847 | } |
| | 848 | |
| | 849 | #else /* !NEW_TTY_DRIVER */ |
| | 850 | static void |
| | 851 | set_special_char (Keymap kmap, TIOTYPE *tiop, int sc, rl_command_func_t *func) |
| | 852 | { |
| | 853 | unsigned char uc; |
| | 854 | |
| | 855 | uc = tiop->c_cc[sc]; |
| | 856 | if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC) |
| | 857 | kmap[uc].function = func; |
| | 858 | } |
| | 859 | |
| | 860 | /* used later */ |
| | 861 | #define RESET_SPECIAL(uc) \ |
| | 862 | if (uc != (unsigned char)_POSIX_VDISABLE && kmap[uc].type == ISFUNC) \ |
| | 863 | kmap[uc].function = rl_insert; |
| | 864 | |
| | 865 | static void |
| | 866 | _rl_bind_tty_special_chars (Keymap kmap, TIOTYPE ttybuff) |
| | 867 | { |
| | 868 | SET_SPECIAL (VERASE, rl_rubout); |
| | 869 | SET_SPECIAL (VKILL, rl_unix_line_discard); |
| | 870 | |
| | 871 | # if defined (VLNEXT) && defined (TERMIOS_TTY_DRIVER) |
| | 872 | SET_SPECIAL (VLNEXT, rl_quoted_insert); |
| | 873 | # endif /* VLNEXT && TERMIOS_TTY_DRIVER */ |
| | 874 | |
| | 875 | # if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER) |
| | 876 | # if defined (VI_MODE) |
| | 877 | if (rl_editing_mode == vi_mode) |
| | 878 | SET_SPECIAL (VWERASE, rl_vi_unix_word_rubout); |
| | 879 | else |
| | 880 | # endif |
| | 881 | SET_SPECIAL (VWERASE, rl_unix_word_rubout); |
| | 882 | # endif /* VWERASE && TERMIOS_TTY_DRIVER */ |
| | 883 | } |
| | 884 | |
| | 885 | #endif /* !NEW_TTY_DRIVER */ |
| | 886 | |
| | 887 | /* Set the system's default editing characters to their readline equivalents |
| | 888 | in KMAP. Should be static, now that we have rl_tty_set_default_bindings. */ |
| | 889 | void |
| | 890 | rltty_set_default_bindings (Keymap kmap) |
| | 891 | { |
| | 892 | #if !defined (NO_TTY_DRIVER) |
| | 893 | TIOTYPE ttybuff; |
| | 894 | int tty; |
| | 895 | |
| | 896 | tty = fileno (rl_instream); |
| | 897 | |
| | 898 | if (get_tty_settings (tty, &ttybuff) == 0) |
| | 899 | _rl_bind_tty_special_chars (kmap, ttybuff); |
| | 900 | #endif |
| | 901 | } |
| | 902 | |
| | 903 | /* New public way to set the system default editing chars to their readline |
| | 904 | equivalents. */ |
| | 905 | void |
| | 906 | rl_tty_set_default_bindings (Keymap kmap) |
| | 907 | { |
| | 908 | rltty_set_default_bindings (kmap); |
| | 909 | } |
| | 910 | |
| | 911 | /* Rebind all of the tty special chars that readline worries about back |
| | 912 | to self-insert. Call this before saving the current terminal special |
| | 913 | chars with save_tty_chars(). This only works on POSIX termios or termio |
| | 914 | systems. */ |
| | 915 | void |
| | 916 | rl_tty_unset_default_bindings (Keymap kmap) |
| | 917 | { |
| | 918 | /* Don't bother before we've saved the tty special chars at least once. */ |
| | 919 | if (RL_ISSTATE(RL_STATE_TTYCSAVED) == 0) |
| | 920 | return; |
| | 921 | |
| | 922 | RESET_SPECIAL (_rl_tty_chars.t_erase); |
| | 923 | RESET_SPECIAL (_rl_tty_chars.t_kill); |
| | 924 | |
| | 925 | # if defined (VLNEXT) && defined (TERMIOS_TTY_DRIVER) |
| | 926 | RESET_SPECIAL (_rl_tty_chars.t_lnext); |
| | 927 | # endif /* VLNEXT && TERMIOS_TTY_DRIVER */ |
| | 928 | |
| | 929 | # if defined (VWERASE) && defined (TERMIOS_TTY_DRIVER) |
| | 930 | RESET_SPECIAL (_rl_tty_chars.t_werase); |
| | 931 | # endif /* VWERASE && TERMIOS_TTY_DRIVER */ |
| | 932 | } |
| | 933 | |
| | 934 | #if defined (HANDLE_SIGNALS) |
| | 935 | |
| | 936 | #if defined (NEW_TTY_DRIVER) || defined (NO_TTY_DRIVER) |
| | 937 | int |
| | 938 | _rl_disable_tty_signals (void) |
| | 939 | { |
| | 940 | return 0; |
| | 941 | } |
| | 942 | |
| | 943 | int |
| | 944 | _rl_restore_tty_signals (void) |
| | 945 | { |
| | 946 | return 0; |
| | 947 | } |
| | 948 | #else |
| | 949 | |
| | 950 | static TIOTYPE sigstty, nosigstty; |
| | 951 | static int tty_sigs_disabled = 0; |
| | 952 | |
| | 953 | int |
| | 954 | _rl_disable_tty_signals (void) |
| | 955 | { |
| | 956 | if (tty_sigs_disabled) |
| | 957 | return 0; |
| | 958 | |
| | 959 | if (_get_tty_settings (fileno (rl_instream), &sigstty) < 0) |
| | 960 | return -1; |
| | 961 | |
| | 962 | nosigstty = sigstty; |
| | 963 | |
| | 964 | nosigstty.c_lflag &= ~ISIG; |
| | 965 | nosigstty.c_iflag &= ~IXON; |
| | 966 | |
| | 967 | if (_set_tty_settings (fileno (rl_instream), &nosigstty) < 0) |
| | 968 | return (_set_tty_settings (fileno (rl_instream), &sigstty)); |
| | 969 | |
| | 970 | tty_sigs_disabled = 1; |
| | 971 | return 0; |
| | 972 | } |
| | 973 | |
| | 974 | int |
| | 975 | _rl_restore_tty_signals (void) |
| | 976 | { |
| | 977 | int r; |
| | 978 | |
| | 979 | if (tty_sigs_disabled == 0) |
| | 980 | return 0; |
| | 981 | |
| | 982 | r = _set_tty_settings (fileno (rl_instream), &sigstty); |
| | 983 | |
| | 984 | if (r == 0) |
| | 985 | tty_sigs_disabled = 0; |
| | 986 | |
| | 987 | return r; |
| | 988 | } |
| | 989 | #endif /* !NEW_TTY_DRIVER */ |
| | 990 | |
| | 991 | #endif /* HANDLE_SIGNALS */ |
projects / deliverable / binutils-gdb.git / blame_incremental