Commit | Line | Data |
---|---|---|
d60d9f65 SS |
1 | /* terminal.c -- controlling the terminal with termcap. */ |
2 | ||
cc88a640 | 3 | /* Copyright (C) 1996-2009 Free Software Foundation, Inc. |
d60d9f65 | 4 | |
cc88a640 JK |
5 | This file is part of the GNU Readline Library (Readline), a library |
6 | for reading lines of text with interactive input and history editing. | |
d60d9f65 | 7 | |
cc88a640 JK |
8 | Readline is free software: you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation, either version 3 of the License, or | |
d60d9f65 SS |
11 | (at your option) any later version. |
12 | ||
cc88a640 JK |
13 | Readline is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
d60d9f65 SS |
16 | GNU General Public License for more details. |
17 | ||
cc88a640 JK |
18 | You should have received a copy of the GNU General Public License |
19 | along with Readline. If not, see <http://www.gnu.org/licenses/>. | |
20 | */ | |
21 | ||
d60d9f65 SS |
22 | #define READLINE_LIBRARY |
23 | ||
24 | #if defined (HAVE_CONFIG_H) | |
25 | # include <config.h> | |
26 | #endif | |
27 | ||
28 | #include <sys/types.h> | |
29 | #include "posixstat.h" | |
30 | #include <fcntl.h> | |
31 | #if defined (HAVE_SYS_FILE_H) | |
32 | # include <sys/file.h> | |
33 | #endif /* HAVE_SYS_FILE_H */ | |
34 | ||
35 | #if defined (HAVE_UNISTD_H) | |
36 | # include <unistd.h> | |
37 | #endif /* HAVE_UNISTD_H */ | |
38 | ||
39 | #if defined (HAVE_STDLIB_H) | |
40 | # include <stdlib.h> | |
41 | #else | |
42 | # include "ansi_stdlib.h" | |
43 | #endif /* HAVE_STDLIB_H */ | |
44 | ||
45 | #if defined (HAVE_LOCALE_H) | |
46 | # include <locale.h> | |
47 | #endif | |
48 | ||
d60d9f65 | 49 | #include <stdio.h> |
d60d9f65 SS |
50 | |
51 | /* System-specific feature definitions and include files. */ | |
52 | #include "rldefs.h" | |
53 | ||
54 | #if defined (GWINSZ_IN_SYS_IOCTL) && !defined (TIOCGWINSZ) | |
55 | # include <sys/ioctl.h> | |
56 | #endif /* GWINSZ_IN_SYS_IOCTL && !TIOCGWINSZ */ | |
57 | ||
30083a32 EZ |
58 | #ifdef __MSDOS__ |
59 | # include <pc.h> | |
60 | #endif | |
61 | ||
d60d9f65 SS |
62 | #include "rltty.h" |
63 | #include "tcap.h" | |
64 | ||
65 | /* Some standard library routines. */ | |
66 | #include "readline.h" | |
67 | #include "history.h" | |
68 | ||
1b17e766 EZ |
69 | #include "rlprivate.h" |
70 | #include "rlshell.h" | |
9255ee31 EZ |
71 | #include "xmalloc.h" |
72 | ||
cc88a640 JK |
73 | #if defined (__MINGW32__) |
74 | # include <windows.h> | |
75 | # include <wincon.h> | |
76 | ||
77 | static void _win_get_screensize PARAMS((int *, int *)); | |
78 | #endif | |
79 | ||
80 | #if defined (__EMX__) | |
81 | static void _emx_get_screensize PARAMS((int *, int *)); | |
82 | #endif | |
83 | ||
9255ee31 EZ |
84 | #define CUSTOM_REDISPLAY_FUNC() (rl_redisplay_function != rl_redisplay) |
85 | #define CUSTOM_INPUT_FUNC() (rl_getc_function != rl_getc) | |
8f2eba6e | 86 | |
cc88a640 JK |
87 | /* If the calling application sets this to a non-zero value, readline will |
88 | use the $LINES and $COLUMNS environment variables to set its idea of the | |
89 | window size before interrogating the kernel. */ | |
90 | int rl_prefer_env_winsize = 0; | |
5bdf8622 | 91 | |
d60d9f65 SS |
92 | /* **************************************************************** */ |
93 | /* */ | |
94 | /* Terminal and Termcap */ | |
95 | /* */ | |
96 | /* **************************************************************** */ | |
97 | ||
30083a32 | 98 | #ifndef __MSDOS__ |
d60d9f65 SS |
99 | static char *term_buffer = (char *)NULL; |
100 | static char *term_string_buffer = (char *)NULL; | |
30083a32 EZ |
101 | #endif /* !__MSDOS__ */ |
102 | ||
103 | static int tcap_initialized; | |
d60d9f65 | 104 | |
cc88a640 | 105 | #if !defined (__linux__) && !defined (NCURSES_VERSION) |
d60d9f65 SS |
106 | # if defined (__EMX__) || defined (NEED_EXTERN_PC) |
107 | extern | |
108 | # endif /* __EMX__ || NEED_EXTERN_PC */ | |
109 | char PC, *BC, *UP; | |
cc88a640 | 110 | #endif /* !__linux__ && !NCURSES_VERSION */ |
d60d9f65 SS |
111 | |
112 | /* Some strings to control terminal actions. These are output by tputs (). */ | |
9255ee31 EZ |
113 | char *_rl_term_clreol; |
114 | char *_rl_term_clrpag; | |
115 | char *_rl_term_cr; | |
116 | char *_rl_term_backspace; | |
117 | char *_rl_term_goto; | |
118 | char *_rl_term_pc; | |
d60d9f65 SS |
119 | |
120 | /* Non-zero if we determine that the terminal can do character insertion. */ | |
9255ee31 | 121 | int _rl_terminal_can_insert = 0; |
d60d9f65 SS |
122 | |
123 | /* How to insert characters. */ | |
9255ee31 EZ |
124 | char *_rl_term_im; |
125 | char *_rl_term_ei; | |
126 | char *_rl_term_ic; | |
127 | char *_rl_term_ip; | |
128 | char *_rl_term_IC; | |
d60d9f65 SS |
129 | |
130 | /* How to delete characters. */ | |
9255ee31 EZ |
131 | char *_rl_term_dc; |
132 | char *_rl_term_DC; | |
d60d9f65 | 133 | |
9255ee31 | 134 | char *_rl_term_forward_char; |
d60d9f65 SS |
135 | |
136 | /* How to go up a line. */ | |
9255ee31 | 137 | char *_rl_term_up; |
d60d9f65 | 138 | |
9255ee31 EZ |
139 | /* A visible bell; char if the terminal can be made to flash the screen. */ |
140 | static char *_rl_visible_bell; | |
d60d9f65 SS |
141 | |
142 | /* Non-zero means the terminal can auto-wrap lines. */ | |
5bdf8622 | 143 | int _rl_term_autowrap = -1; |
d60d9f65 SS |
144 | |
145 | /* Non-zero means that this terminal has a meta key. */ | |
146 | static int term_has_meta; | |
147 | ||
148 | /* The sequences to write to turn on and off the meta key, if this | |
9255ee31 EZ |
149 | terminal has one. */ |
150 | static char *_rl_term_mm; | |
151 | static char *_rl_term_mo; | |
d60d9f65 SS |
152 | |
153 | /* The key sequences output by the arrow keys, if this terminal has any. */ | |
9255ee31 EZ |
154 | static char *_rl_term_ku; |
155 | static char *_rl_term_kd; | |
156 | static char *_rl_term_kr; | |
157 | static char *_rl_term_kl; | |
d60d9f65 SS |
158 | |
159 | /* How to initialize and reset the arrow keys, if this terminal has any. */ | |
9255ee31 EZ |
160 | static char *_rl_term_ks; |
161 | static char *_rl_term_ke; | |
d60d9f65 SS |
162 | |
163 | /* The key sequences sent by the Home and End keys, if any. */ | |
9255ee31 EZ |
164 | static char *_rl_term_kh; |
165 | static char *_rl_term_kH; | |
166 | static char *_rl_term_at7; /* @7 */ | |
167 | ||
5bdf8622 DJ |
168 | /* Delete key */ |
169 | static char *_rl_term_kD; | |
170 | ||
9255ee31 EZ |
171 | /* Insert key */ |
172 | static char *_rl_term_kI; | |
173 | ||
174 | /* Cursor control */ | |
175 | static char *_rl_term_vs; /* very visible */ | |
176 | static char *_rl_term_ve; /* normal */ | |
177 | ||
178 | static void bind_termcap_arrow_keys PARAMS((Keymap)); | |
d60d9f65 SS |
179 | |
180 | /* Variables that hold the screen dimensions, used by the display code. */ | |
9255ee31 | 181 | int _rl_screenwidth, _rl_screenheight, _rl_screenchars; |
d60d9f65 SS |
182 | |
183 | /* Non-zero means the user wants to enable the keypad. */ | |
184 | int _rl_enable_keypad; | |
185 | ||
186 | /* Non-zero means the user wants to enable a meta key. */ | |
187 | int _rl_enable_meta = 1; | |
188 | ||
1b17e766 EZ |
189 | #if defined (__EMX__) |
190 | static void | |
191 | _emx_get_screensize (swp, shp) | |
192 | int *swp, *shp; | |
193 | { | |
194 | int sz[2]; | |
195 | ||
196 | _scrsize (sz); | |
197 | ||
198 | if (swp) | |
199 | *swp = sz[0]; | |
200 | if (shp) | |
201 | *shp = sz[1]; | |
202 | } | |
203 | #endif | |
204 | ||
cc88a640 JK |
205 | #if defined (__MINGW32__) |
206 | static void | |
207 | _win_get_screensize (swp, shp) | |
208 | int *swp, *shp; | |
209 | { | |
210 | HANDLE hConOut; | |
211 | CONSOLE_SCREEN_BUFFER_INFO scr; | |
212 | ||
213 | hConOut = GetStdHandle (STD_OUTPUT_HANDLE); | |
214 | if (hConOut != INVALID_HANDLE_VALUE) | |
215 | { | |
216 | if (GetConsoleScreenBufferInfo (hConOut, &scr)) | |
217 | { | |
218 | *swp = scr.dwSize.X; | |
219 | *shp = scr.srWindow.Bottom - scr.srWindow.Top + 1; | |
220 | } | |
221 | } | |
222 | } | |
223 | #endif | |
224 | ||
d60d9f65 SS |
225 | /* Get readline's idea of the screen size. TTY is a file descriptor open |
226 | to the terminal. If IGNORE_ENV is true, we do not pay attention to the | |
227 | values of $LINES and $COLUMNS. The tests for TERM_STRING_BUFFER being | |
228 | non-null serve to check whether or not we have initialized termcap. */ | |
229 | void | |
230 | _rl_get_screen_size (tty, ignore_env) | |
231 | int tty, ignore_env; | |
232 | { | |
233 | char *ss; | |
234 | #if defined (TIOCGWINSZ) | |
235 | struct winsize window_size; | |
236 | #endif /* TIOCGWINSZ */ | |
5bdf8622 | 237 | int wr, wc; |
d60d9f65 | 238 | |
5bdf8622 | 239 | wr = wc = -1; |
d60d9f65 SS |
240 | #if defined (TIOCGWINSZ) |
241 | if (ioctl (tty, TIOCGWINSZ, &window_size) == 0) | |
242 | { | |
5bdf8622 DJ |
243 | wc = (int) window_size.ws_col; |
244 | wr = (int) window_size.ws_row; | |
d60d9f65 SS |
245 | } |
246 | #endif /* TIOCGWINSZ */ | |
247 | ||
248 | #if defined (__EMX__) | |
cc88a640 JK |
249 | _emx_get_screensize (&wc, &wr); |
250 | #elif defined (__MINGW32__) | |
251 | _win_get_screensize (&wc, &wr); | |
d60d9f65 SS |
252 | #endif |
253 | ||
5bdf8622 DJ |
254 | if (ignore_env || rl_prefer_env_winsize == 0) |
255 | { | |
256 | _rl_screenwidth = wc; | |
257 | _rl_screenheight = wr; | |
258 | } | |
259 | else | |
260 | _rl_screenwidth = _rl_screenheight = -1; | |
261 | ||
d60d9f65 | 262 | /* Environment variable COLUMNS overrides setting of "co" if IGNORE_ENV |
5bdf8622 DJ |
263 | is unset. If we prefer the environment, check it first before |
264 | assigning the value returned by the kernel. */ | |
9255ee31 | 265 | if (_rl_screenwidth <= 0) |
d60d9f65 | 266 | { |
9255ee31 EZ |
267 | if (ignore_env == 0 && (ss = sh_get_env_value ("COLUMNS"))) |
268 | _rl_screenwidth = atoi (ss); | |
d60d9f65 | 269 | |
5bdf8622 DJ |
270 | if (_rl_screenwidth <= 0) |
271 | _rl_screenwidth = wc; | |
272 | ||
b0f0a30e EZ |
273 | #if defined (__DJGPP__) |
274 | if (_rl_screenwidth <= 0) | |
275 | _rl_screenwidth = ScreenCols (); | |
276 | #else | |
9255ee31 EZ |
277 | if (_rl_screenwidth <= 0 && term_string_buffer) |
278 | _rl_screenwidth = tgetnum ("co"); | |
771578d1 | 279 | #endif |
d60d9f65 SS |
280 | } |
281 | ||
282 | /* Environment variable LINES overrides setting of "li" if IGNORE_ENV | |
283 | is unset. */ | |
9255ee31 | 284 | if (_rl_screenheight <= 0) |
d60d9f65 | 285 | { |
9255ee31 EZ |
286 | if (ignore_env == 0 && (ss = sh_get_env_value ("LINES"))) |
287 | _rl_screenheight = atoi (ss); | |
d60d9f65 | 288 | |
5bdf8622 DJ |
289 | if (_rl_screenheight <= 0) |
290 | _rl_screenheight = wr; | |
291 | ||
b0f0a30e EZ |
292 | #if defined (__DJGPP__) |
293 | if (_rl_screenheight <= 0) | |
294 | _rl_screenheight = ScreenRows (); | |
295 | #else | |
9255ee31 EZ |
296 | if (_rl_screenheight <= 0 && term_string_buffer) |
297 | _rl_screenheight = tgetnum ("li"); | |
771578d1 | 298 | #endif |
d60d9f65 SS |
299 | } |
300 | ||
301 | /* If all else fails, default to 80x24 terminal. */ | |
9255ee31 EZ |
302 | if (_rl_screenwidth <= 1) |
303 | _rl_screenwidth = 80; | |
d60d9f65 | 304 | |
9255ee31 EZ |
305 | if (_rl_screenheight <= 0) |
306 | _rl_screenheight = 24; | |
d60d9f65 SS |
307 | |
308 | /* If we're being compiled as part of bash, set the environment | |
309 | variables $LINES and $COLUMNS to new values. Otherwise, just | |
310 | do a pair of putenv () or setenv () calls. */ | |
9255ee31 | 311 | sh_set_lines_and_columns (_rl_screenheight, _rl_screenwidth); |
d60d9f65 | 312 | |
1b17e766 | 313 | if (_rl_term_autowrap == 0) |
9255ee31 | 314 | _rl_screenwidth--; |
d60d9f65 | 315 | |
9255ee31 | 316 | _rl_screenchars = _rl_screenwidth * _rl_screenheight; |
d60d9f65 SS |
317 | } |
318 | ||
319 | void | |
320 | _rl_set_screen_size (rows, cols) | |
321 | int rows, cols; | |
322 | { | |
5bdf8622 DJ |
323 | if (_rl_term_autowrap == -1) |
324 | _rl_init_terminal_io (rl_terminal_name); | |
9255ee31 | 325 | |
5bdf8622 DJ |
326 | if (rows > 0) |
327 | _rl_screenheight = rows; | |
328 | if (cols > 0) | |
329 | { | |
330 | _rl_screenwidth = cols; | |
331 | if (_rl_term_autowrap == 0) | |
332 | _rl_screenwidth--; | |
333 | } | |
d60d9f65 | 334 | |
5bdf8622 DJ |
335 | if (rows > 0 || cols > 0) |
336 | _rl_screenchars = _rl_screenwidth * _rl_screenheight; | |
d60d9f65 SS |
337 | } |
338 | ||
9255ee31 EZ |
339 | void |
340 | rl_set_screen_size (rows, cols) | |
341 | int rows, cols; | |
342 | { | |
343 | _rl_set_screen_size (rows, cols); | |
344 | } | |
345 | ||
346 | void | |
347 | rl_get_screen_size (rows, cols) | |
348 | int *rows, *cols; | |
349 | { | |
350 | if (rows) | |
351 | *rows = _rl_screenheight; | |
352 | if (cols) | |
353 | *cols = _rl_screenwidth; | |
354 | } | |
5bdf8622 DJ |
355 | |
356 | void | |
357 | rl_reset_screen_size () | |
358 | { | |
359 | _rl_get_screen_size (fileno (rl_instream), 0); | |
360 | } | |
9255ee31 | 361 | |
c862e87b JM |
362 | void |
363 | rl_resize_terminal () | |
364 | { | |
cc88a640 JK |
365 | _rl_get_screen_size (fileno (rl_instream), 1); |
366 | if (_rl_echoing_p) | |
c862e87b | 367 | { |
9255ee31 EZ |
368 | if (CUSTOM_REDISPLAY_FUNC ()) |
369 | rl_forced_update_display (); | |
cc88a640 | 370 | else if (RL_ISSTATE(RL_STATE_REDISPLAYING) == 0) |
9255ee31 | 371 | _rl_redisplay_after_sigwinch (); |
c862e87b JM |
372 | } |
373 | } | |
374 | ||
d60d9f65 | 375 | struct _tc_string { |
cc88a640 | 376 | const char * const tc_var; |
d60d9f65 SS |
377 | char **tc_value; |
378 | }; | |
379 | ||
380 | /* This should be kept sorted, just in case we decide to change the | |
381 | search algorithm to something smarter. */ | |
cc88a640 | 382 | static const struct _tc_string tc_strings[] = |
d60d9f65 | 383 | { |
9255ee31 EZ |
384 | { "@7", &_rl_term_at7 }, |
385 | { "DC", &_rl_term_DC }, | |
386 | { "IC", &_rl_term_IC }, | |
387 | { "ce", &_rl_term_clreol }, | |
388 | { "cl", &_rl_term_clrpag }, | |
389 | { "cr", &_rl_term_cr }, | |
390 | { "dc", &_rl_term_dc }, | |
391 | { "ei", &_rl_term_ei }, | |
392 | { "ic", &_rl_term_ic }, | |
393 | { "im", &_rl_term_im }, | |
5bdf8622 | 394 | { "kD", &_rl_term_kD }, /* delete */ |
9255ee31 EZ |
395 | { "kH", &_rl_term_kH }, /* home down ?? */ |
396 | { "kI", &_rl_term_kI }, /* insert */ | |
397 | { "kd", &_rl_term_kd }, | |
398 | { "ke", &_rl_term_ke }, /* end keypad mode */ | |
399 | { "kh", &_rl_term_kh }, /* home */ | |
400 | { "kl", &_rl_term_kl }, | |
401 | { "kr", &_rl_term_kr }, | |
402 | { "ks", &_rl_term_ks }, /* start keypad mode */ | |
403 | { "ku", &_rl_term_ku }, | |
404 | { "le", &_rl_term_backspace }, | |
405 | { "mm", &_rl_term_mm }, | |
406 | { "mo", &_rl_term_mo }, | |
9255ee31 | 407 | { "nd", &_rl_term_forward_char }, |
9255ee31 EZ |
408 | { "pc", &_rl_term_pc }, |
409 | { "up", &_rl_term_up }, | |
410 | { "vb", &_rl_visible_bell }, | |
411 | { "vs", &_rl_term_vs }, | |
412 | { "ve", &_rl_term_ve }, | |
d60d9f65 SS |
413 | }; |
414 | ||
415 | #define NUM_TC_STRINGS (sizeof (tc_strings) / sizeof (struct _tc_string)) | |
416 | ||
417 | /* Read the desired terminal capability strings into BP. The capabilities | |
418 | are described in the TC_STRINGS table. */ | |
419 | static void | |
420 | get_term_capabilities (bp) | |
421 | char **bp; | |
422 | { | |
1b17e766 | 423 | #if !defined (__DJGPP__) /* XXX - doesn't DJGPP have a termcap library? */ |
d60d9f65 SS |
424 | register int i; |
425 | ||
426 | for (i = 0; i < NUM_TC_STRINGS; i++) | |
9255ee31 | 427 | *(tc_strings[i].tc_value) = tgetstr ((char *)tc_strings[i].tc_var, bp); |
771578d1 | 428 | #endif |
d60d9f65 SS |
429 | tcap_initialized = 1; |
430 | } | |
431 | ||
432 | int | |
433 | _rl_init_terminal_io (terminal_name) | |
9255ee31 | 434 | const char *terminal_name; |
d60d9f65 | 435 | { |
9255ee31 EZ |
436 | const char *term; |
437 | char *buffer; | |
1b17e766 | 438 | int tty, tgetent_ret; |
d60d9f65 | 439 | |
9255ee31 EZ |
440 | term = terminal_name ? terminal_name : sh_get_env_value ("TERM"); |
441 | _rl_term_clrpag = _rl_term_cr = _rl_term_clreol = (char *)NULL; | |
1b17e766 | 442 | tty = rl_instream ? fileno (rl_instream) : 0; |
d60d9f65 | 443 | |
1b17e766 EZ |
444 | if (term == 0) |
445 | term = "dumb"; | |
d60d9f65 | 446 | |
30083a32 | 447 | #ifdef __MSDOS__ |
b0f0a30e EZ |
448 | _rl_term_im = _rl_term_ei = _rl_term_ic = _rl_term_IC = (char *)NULL; |
449 | _rl_term_up = _rl_term_dc = _rl_term_DC = _rl_visible_bell = (char *)NULL; | |
450 | _rl_term_ku = _rl_term_kd = _rl_term_kl = _rl_term_kr = (char *)NULL; | |
451 | _rl_term_mm = _rl_term_mo = (char *)NULL; | |
452 | _rl_terminal_can_insert = term_has_meta = _rl_term_autowrap = 0; | |
453 | _rl_term_cr = "\r"; | |
454 | _rl_term_clreol = _rl_term_clrpag = _rl_term_backspace = (char *)NULL; | |
455 | _rl_term_goto = _rl_term_pc = _rl_term_ip = (char *)NULL; | |
456 | _rl_term_ks = _rl_term_ke =_rl_term_vs = _rl_term_ve = (char *)NULL; | |
457 | _rl_term_kh = _rl_term_kH = _rl_term_at7 = _rl_term_kI = (char *)NULL; | |
458 | #if defined(HACK_TERMCAP_MOTION) | |
459 | _rl_term_forward_char = (char *)NULL; | |
460 | #endif | |
30083a32 EZ |
461 | |
462 | _rl_get_screen_size (tty, 0); | |
463 | #else /* !__MSDOS__ */ | |
1b17e766 EZ |
464 | /* I've separated this out for later work on not calling tgetent at all |
465 | if the calling application has supplied a custom redisplay function, | |
466 | (and possibly if the application has supplied a custom input function). */ | |
467 | if (CUSTOM_REDISPLAY_FUNC()) | |
468 | { | |
469 | tgetent_ret = -1; | |
470 | } | |
471 | else | |
472 | { | |
473 | if (term_string_buffer == 0) | |
9255ee31 | 474 | term_string_buffer = (char *)xmalloc(2032); |
d60d9f65 | 475 | |
1b17e766 | 476 | if (term_buffer == 0) |
9255ee31 | 477 | term_buffer = (char *)xmalloc(4080); |
d60d9f65 | 478 | |
1b17e766 | 479 | buffer = term_string_buffer; |
d60d9f65 | 480 | |
1b17e766 EZ |
481 | tgetent_ret = tgetent (term_buffer, term); |
482 | } | |
d60d9f65 | 483 | |
1b17e766 | 484 | if (tgetent_ret <= 0) |
d60d9f65 | 485 | { |
1b17e766 EZ |
486 | FREE (term_string_buffer); |
487 | FREE (term_buffer); | |
488 | buffer = term_buffer = term_string_buffer = (char *)NULL; | |
489 | ||
1b17e766 EZ |
490 | _rl_term_autowrap = 0; /* used by _rl_get_screen_size */ |
491 | ||
5bdf8622 DJ |
492 | /* Allow calling application to set default height and width, using |
493 | rl_set_screen_size */ | |
494 | if (_rl_screenwidth <= 0 || _rl_screenheight <= 0) | |
495 | { | |
1b17e766 | 496 | #if defined (__EMX__) |
5bdf8622 DJ |
497 | _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight); |
498 | _rl_screenwidth--; | |
1b17e766 | 499 | #else /* !__EMX__ */ |
5bdf8622 | 500 | _rl_get_screen_size (tty, 0); |
1b17e766 | 501 | #endif /* !__EMX__ */ |
5bdf8622 | 502 | } |
1b17e766 EZ |
503 | |
504 | /* Defaults. */ | |
9255ee31 | 505 | if (_rl_screenwidth <= 0 || _rl_screenheight <= 0) |
1b17e766 | 506 | { |
9255ee31 EZ |
507 | _rl_screenwidth = 79; |
508 | _rl_screenheight = 24; | |
1b17e766 EZ |
509 | } |
510 | ||
511 | /* Everything below here is used by the redisplay code (tputs). */ | |
9255ee31 EZ |
512 | _rl_screenchars = _rl_screenwidth * _rl_screenheight; |
513 | _rl_term_cr = "\r"; | |
514 | _rl_term_im = _rl_term_ei = _rl_term_ic = _rl_term_IC = (char *)NULL; | |
515 | _rl_term_up = _rl_term_dc = _rl_term_DC = _rl_visible_bell = (char *)NULL; | |
516 | _rl_term_ku = _rl_term_kd = _rl_term_kl = _rl_term_kr = (char *)NULL; | |
5bdf8622 | 517 | _rl_term_kh = _rl_term_kH = _rl_term_kI = _rl_term_kD = (char *)NULL; |
9255ee31 EZ |
518 | _rl_term_ks = _rl_term_ke = _rl_term_at7 = (char *)NULL; |
519 | _rl_term_mm = _rl_term_mo = (char *)NULL; | |
520 | _rl_term_ve = _rl_term_vs = (char *)NULL; | |
cc88a640 | 521 | _rl_term_forward_char = (char *)NULL; |
9255ee31 | 522 | _rl_terminal_can_insert = term_has_meta = 0; |
1b17e766 EZ |
523 | |
524 | /* Reasonable defaults for tgoto(). Readline currently only uses | |
9255ee31 | 525 | tgoto if _rl_term_IC or _rl_term_DC is defined, but just in case we |
1b17e766 EZ |
526 | change that later... */ |
527 | PC = '\0'; | |
9255ee31 EZ |
528 | BC = _rl_term_backspace = "\b"; |
529 | UP = _rl_term_up; | |
1b17e766 | 530 | |
d60d9f65 SS |
531 | return 0; |
532 | } | |
533 | ||
534 | get_term_capabilities (&buffer); | |
535 | ||
536 | /* Set up the variables that the termcap library expects the application | |
537 | to provide. */ | |
9255ee31 EZ |
538 | PC = _rl_term_pc ? *_rl_term_pc : 0; |
539 | BC = _rl_term_backspace; | |
540 | UP = _rl_term_up; | |
d60d9f65 | 541 | |
9255ee31 EZ |
542 | if (!_rl_term_cr) |
543 | _rl_term_cr = "\r"; | |
d60d9f65 | 544 | |
d60d9f65 SS |
545 | _rl_term_autowrap = tgetflag ("am") && tgetflag ("xn"); |
546 | ||
5bdf8622 DJ |
547 | /* Allow calling application to set default height and width, using |
548 | rl_set_screen_size */ | |
549 | if (_rl_screenwidth <= 0 || _rl_screenheight <= 0) | |
550 | _rl_get_screen_size (tty, 0); | |
d60d9f65 SS |
551 | |
552 | /* "An application program can assume that the terminal can do | |
553 | character insertion if *any one of* the capabilities `IC', | |
554 | `im', `ic' or `ip' is provided." But we can't do anything if | |
555 | only `ip' is provided, so... */ | |
9255ee31 | 556 | _rl_terminal_can_insert = (_rl_term_IC || _rl_term_im || _rl_term_ic); |
d60d9f65 SS |
557 | |
558 | /* Check to see if this terminal has a meta key and clear the capability | |
559 | variables if there is none. */ | |
cc88a640 JK |
560 | term_has_meta = tgetflag ("km") != 0; |
561 | if (term_has_meta == 0) | |
9255ee31 | 562 | _rl_term_mm = _rl_term_mo = (char *)NULL; |
d60d9f65 | 563 | |
30083a32 EZ |
564 | #endif /* !__MSDOS__ */ |
565 | ||
d60d9f65 SS |
566 | /* Attempt to find and bind the arrow keys. Do not override already |
567 | bound keys in an overzealous attempt, however. */ | |
d60d9f65 | 568 | |
9255ee31 | 569 | bind_termcap_arrow_keys (emacs_standard_keymap); |
d60d9f65 SS |
570 | |
571 | #if defined (VI_MODE) | |
9255ee31 EZ |
572 | bind_termcap_arrow_keys (vi_movement_keymap); |
573 | bind_termcap_arrow_keys (vi_insertion_keymap); | |
d60d9f65 SS |
574 | #endif /* VI_MODE */ |
575 | ||
d60d9f65 SS |
576 | return 0; |
577 | } | |
578 | ||
9255ee31 EZ |
579 | /* Bind the arrow key sequences from the termcap description in MAP. */ |
580 | static void | |
581 | bind_termcap_arrow_keys (map) | |
582 | Keymap map; | |
583 | { | |
584 | Keymap xkeymap; | |
585 | ||
586 | xkeymap = _rl_keymap; | |
587 | _rl_keymap = map; | |
588 | ||
5bdf8622 DJ |
589 | rl_bind_keyseq_if_unbound (_rl_term_ku, rl_get_previous_history); |
590 | rl_bind_keyseq_if_unbound (_rl_term_kd, rl_get_next_history); | |
591 | rl_bind_keyseq_if_unbound (_rl_term_kr, rl_forward_char); | |
592 | rl_bind_keyseq_if_unbound (_rl_term_kl, rl_backward_char); | |
593 | ||
594 | rl_bind_keyseq_if_unbound (_rl_term_kh, rl_beg_of_line); /* Home */ | |
595 | rl_bind_keyseq_if_unbound (_rl_term_at7, rl_end_of_line); /* End */ | |
9255ee31 | 596 | |
5bdf8622 | 597 | rl_bind_keyseq_if_unbound (_rl_term_kD, rl_delete); |
9255ee31 EZ |
598 | |
599 | _rl_keymap = xkeymap; | |
600 | } | |
601 | ||
d60d9f65 SS |
602 | char * |
603 | rl_get_termcap (cap) | |
9255ee31 | 604 | const char *cap; |
d60d9f65 SS |
605 | { |
606 | register int i; | |
607 | ||
608 | if (tcap_initialized == 0) | |
609 | return ((char *)NULL); | |
610 | for (i = 0; i < NUM_TC_STRINGS; i++) | |
611 | { | |
612 | if (tc_strings[i].tc_var[0] == cap[0] && strcmp (tc_strings[i].tc_var, cap) == 0) | |
613 | return *(tc_strings[i].tc_value); | |
614 | } | |
615 | return ((char *)NULL); | |
616 | } | |
617 | ||
618 | /* Re-initialize the terminal considering that the TERM/TERMCAP variable | |
619 | has changed. */ | |
620 | int | |
621 | rl_reset_terminal (terminal_name) | |
9255ee31 | 622 | const char *terminal_name; |
d60d9f65 | 623 | { |
5bdf8622 | 624 | _rl_screenwidth = _rl_screenheight = 0; |
d60d9f65 SS |
625 | _rl_init_terminal_io (terminal_name); |
626 | return 0; | |
627 | } | |
628 | ||
629 | /* A function for the use of tputs () */ | |
630 | #ifdef _MINIX | |
631 | void | |
632 | _rl_output_character_function (c) | |
633 | int c; | |
634 | { | |
635 | putc (c, _rl_out_stream); | |
636 | } | |
637 | #else /* !_MINIX */ | |
638 | int | |
639 | _rl_output_character_function (c) | |
640 | int c; | |
641 | { | |
642 | return putc (c, _rl_out_stream); | |
643 | } | |
644 | #endif /* !_MINIX */ | |
1b17e766 | 645 | |
d60d9f65 SS |
646 | /* Write COUNT characters from STRING to the output stream. */ |
647 | void | |
648 | _rl_output_some_chars (string, count) | |
9255ee31 | 649 | const char *string; |
d60d9f65 SS |
650 | int count; |
651 | { | |
652 | fwrite (string, 1, count, _rl_out_stream); | |
653 | } | |
654 | ||
655 | /* Move the cursor back. */ | |
656 | int | |
657 | _rl_backspace (count) | |
658 | int count; | |
659 | { | |
660 | register int i; | |
661 | ||
30083a32 | 662 | #ifndef __MSDOS__ |
9255ee31 | 663 | if (_rl_term_backspace) |
d60d9f65 | 664 | for (i = 0; i < count; i++) |
9255ee31 | 665 | tputs (_rl_term_backspace, 1, _rl_output_character_function); |
d60d9f65 | 666 | else |
30083a32 | 667 | #endif |
d60d9f65 SS |
668 | for (i = 0; i < count; i++) |
669 | putc ('\b', _rl_out_stream); | |
670 | return 0; | |
671 | } | |
672 | ||
673 | /* Move to the start of the next line. */ | |
674 | int | |
9255ee31 | 675 | rl_crlf () |
d60d9f65 | 676 | { |
cc88a640 | 677 | #if defined (NEW_TTY_DRIVER) || defined (__MINT__) |
9255ee31 EZ |
678 | if (_rl_term_cr) |
679 | tputs (_rl_term_cr, 1, _rl_output_character_function); | |
cc88a640 | 680 | #endif /* NEW_TTY_DRIVER || __MINT__ */ |
d60d9f65 SS |
681 | putc ('\n', _rl_out_stream); |
682 | return 0; | |
683 | } | |
684 | ||
685 | /* Ring the terminal bell. */ | |
686 | int | |
9255ee31 | 687 | rl_ding () |
d60d9f65 | 688 | { |
cc88a640 | 689 | if (_rl_echoing_p) |
d60d9f65 | 690 | { |
d60d9f65 SS |
691 | switch (_rl_bell_preference) |
692 | { | |
693 | case NO_BELL: | |
694 | default: | |
695 | break; | |
696 | case VISIBLE_BELL: | |
30083a32 EZ |
697 | #ifdef __MSDOS__ |
698 | ScreenVisualBell (); | |
699 | break; | |
700 | #else | |
9255ee31 | 701 | if (_rl_visible_bell) |
d60d9f65 | 702 | { |
9255ee31 | 703 | tputs (_rl_visible_bell, 1, _rl_output_character_function); |
d60d9f65 SS |
704 | break; |
705 | } | |
706 | /* FALLTHROUGH */ | |
5bdf8622 | 707 | #endif |
d60d9f65 SS |
708 | case AUDIBLE_BELL: |
709 | fprintf (stderr, "\007"); | |
710 | fflush (stderr); | |
711 | break; | |
712 | } | |
d60d9f65 SS |
713 | return (0); |
714 | } | |
715 | return (-1); | |
716 | } | |
717 | ||
718 | /* **************************************************************** */ | |
719 | /* */ | |
720 | /* Controlling the Meta Key and Keypad */ | |
721 | /* */ | |
722 | /* **************************************************************** */ | |
723 | ||
724 | void | |
725 | _rl_enable_meta_key () | |
726 | { | |
1b17e766 | 727 | #if !defined (__DJGPP__) |
9255ee31 EZ |
728 | if (term_has_meta && _rl_term_mm) |
729 | tputs (_rl_term_mm, 1, _rl_output_character_function); | |
771578d1 | 730 | #endif |
d60d9f65 SS |
731 | } |
732 | ||
733 | void | |
734 | _rl_control_keypad (on) | |
735 | int on; | |
736 | { | |
1b17e766 | 737 | #if !defined (__DJGPP__) |
9255ee31 EZ |
738 | if (on && _rl_term_ks) |
739 | tputs (_rl_term_ks, 1, _rl_output_character_function); | |
740 | else if (!on && _rl_term_ke) | |
741 | tputs (_rl_term_ke, 1, _rl_output_character_function); | |
771578d1 | 742 | #endif |
d60d9f65 | 743 | } |
9255ee31 EZ |
744 | |
745 | /* **************************************************************** */ | |
746 | /* */ | |
747 | /* Controlling the Cursor */ | |
748 | /* */ | |
749 | /* **************************************************************** */ | |
750 | ||
751 | /* Set the cursor appropriately depending on IM, which is one of the | |
752 | insert modes (insert or overwrite). Insert mode gets the normal | |
753 | cursor. Overwrite mode gets a very visible cursor. Only does | |
754 | anything if we have both capabilities. */ | |
755 | void | |
756 | _rl_set_cursor (im, force) | |
757 | int im, force; | |
758 | { | |
b0f0a30e | 759 | #ifndef __MSDOS__ |
9255ee31 EZ |
760 | if (_rl_term_ve && _rl_term_vs) |
761 | { | |
762 | if (force || im != rl_insert_mode) | |
763 | { | |
764 | if (im == RL_IM_OVERWRITE) | |
765 | tputs (_rl_term_vs, 1, _rl_output_character_function); | |
766 | else | |
767 | tputs (_rl_term_ve, 1, _rl_output_character_function); | |
768 | } | |
769 | } | |
b0f0a30e | 770 | #endif |
9255ee31 | 771 | } |