Commit | Line | Data |
---|---|---|
d60d9f65 SS |
1 | /* terminal.c -- controlling the terminal with termcap. */ |
2 | ||
3 | /* Copyright (C) 1996 Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of the GNU Readline Library, a library for | |
6 | reading lines of text with interactive input and history editing. | |
7 | ||
8 | The GNU Readline Library is free software; you can redistribute it | |
9 | and/or modify it under the terms of the GNU General Public License | |
1b17e766 | 10 | as published by the Free Software Foundation; either version 2, or |
d60d9f65 SS |
11 | (at your option) any later version. |
12 | ||
13 | The GNU Readline Library is distributed in the hope that it will be | |
14 | useful, but WITHOUT ANY WARRANTY; without even the implied warranty | |
15 | of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | The GNU General Public License is often shipped with GNU software, and | |
19 | is generally kept in a file called COPYING or LICENSE. If you do not | |
20 | have a copy of the license, write to the Free Software Foundation, | |
1b17e766 | 21 | 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
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 | ||
73 | #define CUSTOM_REDISPLAY_FUNC() (rl_redisplay_function != rl_redisplay) | |
74 | #define CUSTOM_INPUT_FUNC() (rl_getc_function != rl_getc) | |
8f2eba6e | 75 | |
d60d9f65 SS |
76 | /* **************************************************************** */ |
77 | /* */ | |
78 | /* Terminal and Termcap */ | |
79 | /* */ | |
80 | /* **************************************************************** */ | |
81 | ||
30083a32 | 82 | #ifndef __MSDOS__ |
d60d9f65 SS |
83 | static char *term_buffer = (char *)NULL; |
84 | static char *term_string_buffer = (char *)NULL; | |
85 | ||
d60d9f65 SS |
86 | /* Non-zero means this terminal can't really do anything. */ |
87 | static int dumb_term; | |
30083a32 EZ |
88 | #endif /* !__MSDOS__ */ |
89 | ||
90 | static int tcap_initialized; | |
d60d9f65 SS |
91 | |
92 | #if !defined (__linux__) | |
93 | # if defined (__EMX__) || defined (NEED_EXTERN_PC) | |
94 | extern | |
95 | # endif /* __EMX__ || NEED_EXTERN_PC */ | |
96 | char PC, *BC, *UP; | |
97 | #endif /* __linux__ */ | |
98 | ||
99 | /* Some strings to control terminal actions. These are output by tputs (). */ | |
9255ee31 EZ |
100 | char *_rl_term_clreol; |
101 | char *_rl_term_clrpag; | |
102 | char *_rl_term_cr; | |
103 | char *_rl_term_backspace; | |
104 | char *_rl_term_goto; | |
105 | char *_rl_term_pc; | |
d60d9f65 SS |
106 | |
107 | /* Non-zero if we determine that the terminal can do character insertion. */ | |
9255ee31 | 108 | int _rl_terminal_can_insert = 0; |
d60d9f65 SS |
109 | |
110 | /* How to insert characters. */ | |
9255ee31 EZ |
111 | char *_rl_term_im; |
112 | char *_rl_term_ei; | |
113 | char *_rl_term_ic; | |
114 | char *_rl_term_ip; | |
115 | char *_rl_term_IC; | |
d60d9f65 SS |
116 | |
117 | /* How to delete characters. */ | |
9255ee31 EZ |
118 | char *_rl_term_dc; |
119 | char *_rl_term_DC; | |
d60d9f65 SS |
120 | |
121 | #if defined (HACK_TERMCAP_MOTION) | |
9255ee31 | 122 | char *_rl_term_forward_char; |
d60d9f65 SS |
123 | #endif /* HACK_TERMCAP_MOTION */ |
124 | ||
125 | /* How to go up a line. */ | |
9255ee31 | 126 | char *_rl_term_up; |
d60d9f65 | 127 | |
9255ee31 EZ |
128 | /* A visible bell; char if the terminal can be made to flash the screen. */ |
129 | static char *_rl_visible_bell; | |
d60d9f65 SS |
130 | |
131 | /* Non-zero means the terminal can auto-wrap lines. */ | |
132 | int _rl_term_autowrap; | |
133 | ||
134 | /* Non-zero means that this terminal has a meta key. */ | |
135 | static int term_has_meta; | |
136 | ||
137 | /* The sequences to write to turn on and off the meta key, if this | |
9255ee31 EZ |
138 | terminal has one. */ |
139 | static char *_rl_term_mm; | |
140 | static char *_rl_term_mo; | |
d60d9f65 SS |
141 | |
142 | /* The key sequences output by the arrow keys, if this terminal has any. */ | |
9255ee31 EZ |
143 | static char *_rl_term_ku; |
144 | static char *_rl_term_kd; | |
145 | static char *_rl_term_kr; | |
146 | static char *_rl_term_kl; | |
d60d9f65 SS |
147 | |
148 | /* How to initialize and reset the arrow keys, if this terminal has any. */ | |
9255ee31 EZ |
149 | static char *_rl_term_ks; |
150 | static char *_rl_term_ke; | |
d60d9f65 SS |
151 | |
152 | /* The key sequences sent by the Home and End keys, if any. */ | |
9255ee31 EZ |
153 | static char *_rl_term_kh; |
154 | static char *_rl_term_kH; | |
155 | static char *_rl_term_at7; /* @7 */ | |
156 | ||
157 | /* Insert key */ | |
158 | static char *_rl_term_kI; | |
159 | ||
160 | /* Cursor control */ | |
161 | static char *_rl_term_vs; /* very visible */ | |
162 | static char *_rl_term_ve; /* normal */ | |
163 | ||
164 | static void bind_termcap_arrow_keys PARAMS((Keymap)); | |
d60d9f65 SS |
165 | |
166 | /* Variables that hold the screen dimensions, used by the display code. */ | |
9255ee31 | 167 | int _rl_screenwidth, _rl_screenheight, _rl_screenchars; |
d60d9f65 SS |
168 | |
169 | /* Non-zero means the user wants to enable the keypad. */ | |
170 | int _rl_enable_keypad; | |
171 | ||
172 | /* Non-zero means the user wants to enable a meta key. */ | |
173 | int _rl_enable_meta = 1; | |
174 | ||
1b17e766 EZ |
175 | #if defined (__EMX__) |
176 | static void | |
177 | _emx_get_screensize (swp, shp) | |
178 | int *swp, *shp; | |
179 | { | |
180 | int sz[2]; | |
181 | ||
182 | _scrsize (sz); | |
183 | ||
184 | if (swp) | |
185 | *swp = sz[0]; | |
186 | if (shp) | |
187 | *shp = sz[1]; | |
188 | } | |
189 | #endif | |
190 | ||
d60d9f65 SS |
191 | /* Get readline's idea of the screen size. TTY is a file descriptor open |
192 | to the terminal. If IGNORE_ENV is true, we do not pay attention to the | |
193 | values of $LINES and $COLUMNS. The tests for TERM_STRING_BUFFER being | |
194 | non-null serve to check whether or not we have initialized termcap. */ | |
195 | void | |
196 | _rl_get_screen_size (tty, ignore_env) | |
197 | int tty, ignore_env; | |
198 | { | |
199 | char *ss; | |
200 | #if defined (TIOCGWINSZ) | |
201 | struct winsize window_size; | |
202 | #endif /* TIOCGWINSZ */ | |
d60d9f65 SS |
203 | |
204 | #if defined (TIOCGWINSZ) | |
205 | if (ioctl (tty, TIOCGWINSZ, &window_size) == 0) | |
206 | { | |
9255ee31 EZ |
207 | _rl_screenwidth = (int) window_size.ws_col; |
208 | _rl_screenheight = (int) window_size.ws_row; | |
d60d9f65 SS |
209 | } |
210 | #endif /* TIOCGWINSZ */ | |
211 | ||
212 | #if defined (__EMX__) | |
9255ee31 | 213 | _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight); |
d60d9f65 SS |
214 | #endif |
215 | ||
216 | /* Environment variable COLUMNS overrides setting of "co" if IGNORE_ENV | |
217 | is unset. */ | |
9255ee31 | 218 | if (_rl_screenwidth <= 0) |
d60d9f65 | 219 | { |
9255ee31 EZ |
220 | if (ignore_env == 0 && (ss = sh_get_env_value ("COLUMNS"))) |
221 | _rl_screenwidth = atoi (ss); | |
d60d9f65 | 222 | |
b0f0a30e EZ |
223 | #if defined (__DJGPP__) |
224 | if (_rl_screenwidth <= 0) | |
225 | _rl_screenwidth = ScreenCols (); | |
226 | #else | |
9255ee31 EZ |
227 | if (_rl_screenwidth <= 0 && term_string_buffer) |
228 | _rl_screenwidth = tgetnum ("co"); | |
771578d1 | 229 | #endif |
d60d9f65 SS |
230 | } |
231 | ||
232 | /* Environment variable LINES overrides setting of "li" if IGNORE_ENV | |
233 | is unset. */ | |
9255ee31 | 234 | if (_rl_screenheight <= 0) |
d60d9f65 | 235 | { |
9255ee31 EZ |
236 | if (ignore_env == 0 && (ss = sh_get_env_value ("LINES"))) |
237 | _rl_screenheight = atoi (ss); | |
d60d9f65 | 238 | |
b0f0a30e EZ |
239 | #if defined (__DJGPP__) |
240 | if (_rl_screenheight <= 0) | |
241 | _rl_screenheight = ScreenRows (); | |
242 | #else | |
9255ee31 EZ |
243 | if (_rl_screenheight <= 0 && term_string_buffer) |
244 | _rl_screenheight = tgetnum ("li"); | |
771578d1 | 245 | #endif |
d60d9f65 SS |
246 | } |
247 | ||
248 | /* If all else fails, default to 80x24 terminal. */ | |
9255ee31 EZ |
249 | if (_rl_screenwidth <= 1) |
250 | _rl_screenwidth = 80; | |
d60d9f65 | 251 | |
9255ee31 EZ |
252 | if (_rl_screenheight <= 0) |
253 | _rl_screenheight = 24; | |
d60d9f65 SS |
254 | |
255 | /* If we're being compiled as part of bash, set the environment | |
256 | variables $LINES and $COLUMNS to new values. Otherwise, just | |
257 | do a pair of putenv () or setenv () calls. */ | |
9255ee31 | 258 | sh_set_lines_and_columns (_rl_screenheight, _rl_screenwidth); |
d60d9f65 | 259 | |
1b17e766 | 260 | if (_rl_term_autowrap == 0) |
9255ee31 | 261 | _rl_screenwidth--; |
d60d9f65 | 262 | |
9255ee31 | 263 | _rl_screenchars = _rl_screenwidth * _rl_screenheight; |
d60d9f65 SS |
264 | } |
265 | ||
266 | void | |
267 | _rl_set_screen_size (rows, cols) | |
268 | int rows, cols; | |
269 | { | |
9255ee31 EZ |
270 | if (rows == 0 || cols == 0) |
271 | return; | |
272 | ||
273 | _rl_screenheight = rows; | |
274 | _rl_screenwidth = cols; | |
d60d9f65 SS |
275 | |
276 | if (_rl_term_autowrap == 0) | |
9255ee31 | 277 | _rl_screenwidth--; |
d60d9f65 | 278 | |
9255ee31 | 279 | _rl_screenchars = _rl_screenwidth * _rl_screenheight; |
d60d9f65 SS |
280 | } |
281 | ||
9255ee31 EZ |
282 | void |
283 | rl_set_screen_size (rows, cols) | |
284 | int rows, cols; | |
285 | { | |
286 | _rl_set_screen_size (rows, cols); | |
287 | } | |
288 | ||
289 | void | |
290 | rl_get_screen_size (rows, cols) | |
291 | int *rows, *cols; | |
292 | { | |
293 | if (rows) | |
294 | *rows = _rl_screenheight; | |
295 | if (cols) | |
296 | *cols = _rl_screenwidth; | |
297 | } | |
298 | ||
c862e87b JM |
299 | void |
300 | rl_resize_terminal () | |
301 | { | |
302 | if (readline_echoing_p) | |
303 | { | |
304 | _rl_get_screen_size (fileno (rl_instream), 1); | |
9255ee31 EZ |
305 | if (CUSTOM_REDISPLAY_FUNC ()) |
306 | rl_forced_update_display (); | |
307 | else | |
308 | _rl_redisplay_after_sigwinch (); | |
c862e87b JM |
309 | } |
310 | } | |
311 | ||
d60d9f65 | 312 | struct _tc_string { |
9255ee31 | 313 | const char *tc_var; |
d60d9f65 SS |
314 | char **tc_value; |
315 | }; | |
316 | ||
317 | /* This should be kept sorted, just in case we decide to change the | |
318 | search algorithm to something smarter. */ | |
319 | static struct _tc_string tc_strings[] = | |
320 | { | |
9255ee31 EZ |
321 | { "@7", &_rl_term_at7 }, |
322 | { "DC", &_rl_term_DC }, | |
323 | { "IC", &_rl_term_IC }, | |
324 | { "ce", &_rl_term_clreol }, | |
325 | { "cl", &_rl_term_clrpag }, | |
326 | { "cr", &_rl_term_cr }, | |
327 | { "dc", &_rl_term_dc }, | |
328 | { "ei", &_rl_term_ei }, | |
329 | { "ic", &_rl_term_ic }, | |
330 | { "im", &_rl_term_im }, | |
331 | { "kH", &_rl_term_kH }, /* home down ?? */ | |
332 | { "kI", &_rl_term_kI }, /* insert */ | |
333 | { "kd", &_rl_term_kd }, | |
334 | { "ke", &_rl_term_ke }, /* end keypad mode */ | |
335 | { "kh", &_rl_term_kh }, /* home */ | |
336 | { "kl", &_rl_term_kl }, | |
337 | { "kr", &_rl_term_kr }, | |
338 | { "ks", &_rl_term_ks }, /* start keypad mode */ | |
339 | { "ku", &_rl_term_ku }, | |
340 | { "le", &_rl_term_backspace }, | |
341 | { "mm", &_rl_term_mm }, | |
342 | { "mo", &_rl_term_mo }, | |
d60d9f65 | 343 | #if defined (HACK_TERMCAP_MOTION) |
9255ee31 | 344 | { "nd", &_rl_term_forward_char }, |
d60d9f65 | 345 | #endif |
9255ee31 EZ |
346 | { "pc", &_rl_term_pc }, |
347 | { "up", &_rl_term_up }, | |
348 | { "vb", &_rl_visible_bell }, | |
349 | { "vs", &_rl_term_vs }, | |
350 | { "ve", &_rl_term_ve }, | |
d60d9f65 SS |
351 | }; |
352 | ||
353 | #define NUM_TC_STRINGS (sizeof (tc_strings) / sizeof (struct _tc_string)) | |
354 | ||
355 | /* Read the desired terminal capability strings into BP. The capabilities | |
356 | are described in the TC_STRINGS table. */ | |
357 | static void | |
358 | get_term_capabilities (bp) | |
359 | char **bp; | |
360 | { | |
1b17e766 | 361 | #if !defined (__DJGPP__) /* XXX - doesn't DJGPP have a termcap library? */ |
d60d9f65 SS |
362 | register int i; |
363 | ||
364 | for (i = 0; i < NUM_TC_STRINGS; i++) | |
9255ee31 EZ |
365 | # ifdef __LCC__ |
366 | *(tc_strings[i].tc_value) = tgetstr ((char *)tc_strings[i].tc_var, bp); | |
367 | # else | |
d60d9f65 | 368 | *(tc_strings[i].tc_value) = tgetstr (tc_strings[i].tc_var, bp); |
9255ee31 | 369 | # endif |
771578d1 | 370 | #endif |
d60d9f65 SS |
371 | tcap_initialized = 1; |
372 | } | |
373 | ||
374 | int | |
375 | _rl_init_terminal_io (terminal_name) | |
9255ee31 | 376 | const char *terminal_name; |
d60d9f65 | 377 | { |
9255ee31 EZ |
378 | const char *term; |
379 | char *buffer; | |
1b17e766 | 380 | int tty, tgetent_ret; |
d60d9f65 | 381 | |
9255ee31 EZ |
382 | term = terminal_name ? terminal_name : sh_get_env_value ("TERM"); |
383 | _rl_term_clrpag = _rl_term_cr = _rl_term_clreol = (char *)NULL; | |
1b17e766 | 384 | tty = rl_instream ? fileno (rl_instream) : 0; |
9255ee31 | 385 | _rl_screenwidth = _rl_screenheight = 0; |
d60d9f65 | 386 | |
1b17e766 EZ |
387 | if (term == 0) |
388 | term = "dumb"; | |
d60d9f65 | 389 | |
30083a32 | 390 | #ifdef __MSDOS__ |
b0f0a30e EZ |
391 | _rl_term_im = _rl_term_ei = _rl_term_ic = _rl_term_IC = (char *)NULL; |
392 | _rl_term_up = _rl_term_dc = _rl_term_DC = _rl_visible_bell = (char *)NULL; | |
393 | _rl_term_ku = _rl_term_kd = _rl_term_kl = _rl_term_kr = (char *)NULL; | |
394 | _rl_term_mm = _rl_term_mo = (char *)NULL; | |
395 | _rl_terminal_can_insert = term_has_meta = _rl_term_autowrap = 0; | |
396 | _rl_term_cr = "\r"; | |
397 | _rl_term_clreol = _rl_term_clrpag = _rl_term_backspace = (char *)NULL; | |
398 | _rl_term_goto = _rl_term_pc = _rl_term_ip = (char *)NULL; | |
399 | _rl_term_ks = _rl_term_ke =_rl_term_vs = _rl_term_ve = (char *)NULL; | |
400 | _rl_term_kh = _rl_term_kH = _rl_term_at7 = _rl_term_kI = (char *)NULL; | |
401 | #if defined(HACK_TERMCAP_MOTION) | |
402 | _rl_term_forward_char = (char *)NULL; | |
403 | #endif | |
30083a32 EZ |
404 | |
405 | _rl_get_screen_size (tty, 0); | |
406 | #else /* !__MSDOS__ */ | |
1b17e766 EZ |
407 | /* I've separated this out for later work on not calling tgetent at all |
408 | if the calling application has supplied a custom redisplay function, | |
409 | (and possibly if the application has supplied a custom input function). */ | |
410 | if (CUSTOM_REDISPLAY_FUNC()) | |
411 | { | |
412 | tgetent_ret = -1; | |
413 | } | |
414 | else | |
415 | { | |
416 | if (term_string_buffer == 0) | |
9255ee31 | 417 | term_string_buffer = (char *)xmalloc(2032); |
d60d9f65 | 418 | |
1b17e766 | 419 | if (term_buffer == 0) |
9255ee31 | 420 | term_buffer = (char *)xmalloc(4080); |
d60d9f65 | 421 | |
1b17e766 | 422 | buffer = term_string_buffer; |
d60d9f65 | 423 | |
1b17e766 EZ |
424 | tgetent_ret = tgetent (term_buffer, term); |
425 | } | |
d60d9f65 | 426 | |
1b17e766 | 427 | if (tgetent_ret <= 0) |
d60d9f65 | 428 | { |
1b17e766 EZ |
429 | FREE (term_string_buffer); |
430 | FREE (term_buffer); | |
431 | buffer = term_buffer = term_string_buffer = (char *)NULL; | |
432 | ||
1b17e766 EZ |
433 | _rl_term_autowrap = 0; /* used by _rl_get_screen_size */ |
434 | ||
435 | #if defined (__EMX__) | |
9255ee31 EZ |
436 | _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight); |
437 | _rl_screenwidth--; | |
1b17e766 EZ |
438 | #else /* !__EMX__ */ |
439 | _rl_get_screen_size (tty, 0); | |
440 | #endif /* !__EMX__ */ | |
441 | ||
442 | /* Defaults. */ | |
9255ee31 | 443 | if (_rl_screenwidth <= 0 || _rl_screenheight <= 0) |
1b17e766 | 444 | { |
9255ee31 EZ |
445 | _rl_screenwidth = 79; |
446 | _rl_screenheight = 24; | |
1b17e766 EZ |
447 | } |
448 | ||
449 | /* Everything below here is used by the redisplay code (tputs). */ | |
9255ee31 EZ |
450 | _rl_screenchars = _rl_screenwidth * _rl_screenheight; |
451 | _rl_term_cr = "\r"; | |
452 | _rl_term_im = _rl_term_ei = _rl_term_ic = _rl_term_IC = (char *)NULL; | |
453 | _rl_term_up = _rl_term_dc = _rl_term_DC = _rl_visible_bell = (char *)NULL; | |
454 | _rl_term_ku = _rl_term_kd = _rl_term_kl = _rl_term_kr = (char *)NULL; | |
455 | _rl_term_kh = _rl_term_kH = _rl_term_kI = (char *)NULL; | |
456 | _rl_term_ks = _rl_term_ke = _rl_term_at7 = (char *)NULL; | |
457 | _rl_term_mm = _rl_term_mo = (char *)NULL; | |
458 | _rl_term_ve = _rl_term_vs = (char *)NULL; | |
d60d9f65 SS |
459 | #if defined (HACK_TERMCAP_MOTION) |
460 | term_forward_char = (char *)NULL; | |
461 | #endif | |
9255ee31 | 462 | _rl_terminal_can_insert = term_has_meta = 0; |
1b17e766 EZ |
463 | |
464 | /* Reasonable defaults for tgoto(). Readline currently only uses | |
9255ee31 | 465 | tgoto if _rl_term_IC or _rl_term_DC is defined, but just in case we |
1b17e766 EZ |
466 | change that later... */ |
467 | PC = '\0'; | |
9255ee31 EZ |
468 | BC = _rl_term_backspace = "\b"; |
469 | UP = _rl_term_up; | |
1b17e766 | 470 | |
d60d9f65 SS |
471 | return 0; |
472 | } | |
473 | ||
474 | get_term_capabilities (&buffer); | |
475 | ||
476 | /* Set up the variables that the termcap library expects the application | |
477 | to provide. */ | |
9255ee31 EZ |
478 | PC = _rl_term_pc ? *_rl_term_pc : 0; |
479 | BC = _rl_term_backspace; | |
480 | UP = _rl_term_up; | |
d60d9f65 | 481 | |
9255ee31 EZ |
482 | if (!_rl_term_cr) |
483 | _rl_term_cr = "\r"; | |
d60d9f65 | 484 | |
d60d9f65 SS |
485 | _rl_term_autowrap = tgetflag ("am") && tgetflag ("xn"); |
486 | ||
487 | _rl_get_screen_size (tty, 0); | |
488 | ||
489 | /* "An application program can assume that the terminal can do | |
490 | character insertion if *any one of* the capabilities `IC', | |
491 | `im', `ic' or `ip' is provided." But we can't do anything if | |
492 | only `ip' is provided, so... */ | |
9255ee31 | 493 | _rl_terminal_can_insert = (_rl_term_IC || _rl_term_im || _rl_term_ic); |
d60d9f65 SS |
494 | |
495 | /* Check to see if this terminal has a meta key and clear the capability | |
496 | variables if there is none. */ | |
497 | term_has_meta = (tgetflag ("km") || tgetflag ("MT")); | |
498 | if (!term_has_meta) | |
9255ee31 | 499 | _rl_term_mm = _rl_term_mo = (char *)NULL; |
d60d9f65 | 500 | |
30083a32 EZ |
501 | #endif /* !__MSDOS__ */ |
502 | ||
d60d9f65 SS |
503 | /* Attempt to find and bind the arrow keys. Do not override already |
504 | bound keys in an overzealous attempt, however. */ | |
d60d9f65 | 505 | |
9255ee31 | 506 | bind_termcap_arrow_keys (emacs_standard_keymap); |
d60d9f65 SS |
507 | |
508 | #if defined (VI_MODE) | |
9255ee31 EZ |
509 | bind_termcap_arrow_keys (vi_movement_keymap); |
510 | bind_termcap_arrow_keys (vi_insertion_keymap); | |
d60d9f65 SS |
511 | #endif /* VI_MODE */ |
512 | ||
d60d9f65 SS |
513 | return 0; |
514 | } | |
515 | ||
9255ee31 EZ |
516 | /* Bind the arrow key sequences from the termcap description in MAP. */ |
517 | static void | |
518 | bind_termcap_arrow_keys (map) | |
519 | Keymap map; | |
520 | { | |
521 | Keymap xkeymap; | |
522 | ||
523 | xkeymap = _rl_keymap; | |
524 | _rl_keymap = map; | |
525 | ||
526 | _rl_bind_if_unbound (_rl_term_ku, rl_get_previous_history); | |
527 | _rl_bind_if_unbound (_rl_term_kd, rl_get_next_history); | |
528 | _rl_bind_if_unbound (_rl_term_kr, rl_forward); | |
529 | _rl_bind_if_unbound (_rl_term_kl, rl_backward); | |
530 | ||
531 | _rl_bind_if_unbound (_rl_term_kh, rl_beg_of_line); /* Home */ | |
532 | _rl_bind_if_unbound (_rl_term_at7, rl_end_of_line); /* End */ | |
533 | ||
534 | _rl_keymap = xkeymap; | |
535 | } | |
536 | ||
d60d9f65 SS |
537 | char * |
538 | rl_get_termcap (cap) | |
9255ee31 | 539 | const char *cap; |
d60d9f65 SS |
540 | { |
541 | register int i; | |
542 | ||
543 | if (tcap_initialized == 0) | |
544 | return ((char *)NULL); | |
545 | for (i = 0; i < NUM_TC_STRINGS; i++) | |
546 | { | |
547 | if (tc_strings[i].tc_var[0] == cap[0] && strcmp (tc_strings[i].tc_var, cap) == 0) | |
548 | return *(tc_strings[i].tc_value); | |
549 | } | |
550 | return ((char *)NULL); | |
551 | } | |
552 | ||
553 | /* Re-initialize the terminal considering that the TERM/TERMCAP variable | |
554 | has changed. */ | |
555 | int | |
556 | rl_reset_terminal (terminal_name) | |
9255ee31 | 557 | const char *terminal_name; |
d60d9f65 SS |
558 | { |
559 | _rl_init_terminal_io (terminal_name); | |
560 | return 0; | |
561 | } | |
562 | ||
563 | /* A function for the use of tputs () */ | |
564 | #ifdef _MINIX | |
565 | void | |
566 | _rl_output_character_function (c) | |
567 | int c; | |
568 | { | |
569 | putc (c, _rl_out_stream); | |
570 | } | |
571 | #else /* !_MINIX */ | |
572 | int | |
573 | _rl_output_character_function (c) | |
574 | int c; | |
575 | { | |
576 | return putc (c, _rl_out_stream); | |
577 | } | |
578 | #endif /* !_MINIX */ | |
1b17e766 | 579 | |
d60d9f65 SS |
580 | /* Write COUNT characters from STRING to the output stream. */ |
581 | void | |
582 | _rl_output_some_chars (string, count) | |
9255ee31 | 583 | const char *string; |
d60d9f65 SS |
584 | int count; |
585 | { | |
586 | fwrite (string, 1, count, _rl_out_stream); | |
587 | } | |
588 | ||
589 | /* Move the cursor back. */ | |
590 | int | |
591 | _rl_backspace (count) | |
592 | int count; | |
593 | { | |
594 | register int i; | |
595 | ||
30083a32 | 596 | #ifndef __MSDOS__ |
9255ee31 | 597 | if (_rl_term_backspace) |
d60d9f65 | 598 | for (i = 0; i < count; i++) |
9255ee31 | 599 | tputs (_rl_term_backspace, 1, _rl_output_character_function); |
d60d9f65 | 600 | else |
30083a32 | 601 | #endif |
d60d9f65 SS |
602 | for (i = 0; i < count; i++) |
603 | putc ('\b', _rl_out_stream); | |
604 | return 0; | |
605 | } | |
606 | ||
607 | /* Move to the start of the next line. */ | |
608 | int | |
9255ee31 | 609 | rl_crlf () |
d60d9f65 SS |
610 | { |
611 | #if defined (NEW_TTY_DRIVER) | |
9255ee31 EZ |
612 | if (_rl_term_cr) |
613 | tputs (_rl_term_cr, 1, _rl_output_character_function); | |
d60d9f65 SS |
614 | #endif /* NEW_TTY_DRIVER */ |
615 | putc ('\n', _rl_out_stream); | |
616 | return 0; | |
617 | } | |
618 | ||
619 | /* Ring the terminal bell. */ | |
620 | int | |
9255ee31 | 621 | rl_ding () |
d60d9f65 SS |
622 | { |
623 | if (readline_echoing_p) | |
624 | { | |
d60d9f65 SS |
625 | switch (_rl_bell_preference) |
626 | { | |
627 | case NO_BELL: | |
628 | default: | |
629 | break; | |
630 | case VISIBLE_BELL: | |
30083a32 EZ |
631 | #ifdef __MSDOS__ |
632 | ScreenVisualBell (); | |
633 | break; | |
634 | #else | |
9255ee31 | 635 | if (_rl_visible_bell) |
d60d9f65 | 636 | { |
9255ee31 | 637 | tputs (_rl_visible_bell, 1, _rl_output_character_function); |
d60d9f65 SS |
638 | break; |
639 | } | |
30083a32 | 640 | #endif |
d60d9f65 SS |
641 | /* FALLTHROUGH */ |
642 | case AUDIBLE_BELL: | |
643 | fprintf (stderr, "\007"); | |
644 | fflush (stderr); | |
645 | break; | |
646 | } | |
d60d9f65 SS |
647 | return (0); |
648 | } | |
649 | return (-1); | |
650 | } | |
651 | ||
652 | /* **************************************************************** */ | |
653 | /* */ | |
654 | /* Controlling the Meta Key and Keypad */ | |
655 | /* */ | |
656 | /* **************************************************************** */ | |
657 | ||
658 | void | |
659 | _rl_enable_meta_key () | |
660 | { | |
1b17e766 | 661 | #if !defined (__DJGPP__) |
9255ee31 EZ |
662 | if (term_has_meta && _rl_term_mm) |
663 | tputs (_rl_term_mm, 1, _rl_output_character_function); | |
771578d1 | 664 | #endif |
d60d9f65 SS |
665 | } |
666 | ||
667 | void | |
668 | _rl_control_keypad (on) | |
669 | int on; | |
670 | { | |
1b17e766 | 671 | #if !defined (__DJGPP__) |
9255ee31 EZ |
672 | if (on && _rl_term_ks) |
673 | tputs (_rl_term_ks, 1, _rl_output_character_function); | |
674 | else if (!on && _rl_term_ke) | |
675 | tputs (_rl_term_ke, 1, _rl_output_character_function); | |
771578d1 | 676 | #endif |
d60d9f65 | 677 | } |
9255ee31 EZ |
678 | |
679 | /* **************************************************************** */ | |
680 | /* */ | |
681 | /* Controlling the Cursor */ | |
682 | /* */ | |
683 | /* **************************************************************** */ | |
684 | ||
685 | /* Set the cursor appropriately depending on IM, which is one of the | |
686 | insert modes (insert or overwrite). Insert mode gets the normal | |
687 | cursor. Overwrite mode gets a very visible cursor. Only does | |
688 | anything if we have both capabilities. */ | |
689 | void | |
690 | _rl_set_cursor (im, force) | |
691 | int im, force; | |
692 | { | |
b0f0a30e | 693 | #ifndef __MSDOS__ |
9255ee31 EZ |
694 | if (_rl_term_ve && _rl_term_vs) |
695 | { | |
696 | if (force || im != rl_insert_mode) | |
697 | { | |
698 | if (im == RL_IM_OVERWRITE) | |
699 | tputs (_rl_term_vs, 1, _rl_output_character_function); | |
700 | else | |
701 | tputs (_rl_term_ve, 1, _rl_output_character_function); | |
702 | } | |
703 | } | |
b0f0a30e | 704 | #endif |
9255ee31 | 705 | } |