1: /* terminal.c -- controlling the terminal with termcap. */
2:
3: /* Copyright (C) 1996-2009 Free Software Foundation, Inc.
4:
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.
7:
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
11: (at your option) any later version.
12:
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
16: GNU General Public License for more details.
17:
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:
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:
49: #include <stdio.h>
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:
58: #ifdef __MSDOS__
59: # include <pc.h>
60: #endif
61:
62: #include "rltty.h"
63: #include "tcap.h"
64:
65: /* Some standard library routines. */
66: #include "readline.h"
67: #include "history.h"
68:
69: #include "rlprivate.h"
70: #include "rlshell.h"
71: #include "xmalloc.h"
72:
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:
84: /* If the calling application sets this to a non-zero value, readline will
85: use the $LINES and $COLUMNS environment variables to set its idea of the
86: window size before interrogating the kernel. */
87: int rl_prefer_env_winsize = 0;
88:
89: /* If this is non-zero, readline will set LINES and COLUMNS in the
90: environment when it handles SIGWINCH. */
91: int rl_change_environment = 1;
92:
93: /* **************************************************************** */
94: /* */
95: /* Terminal and Termcap */
96: /* */
97: /* **************************************************************** */
98:
99: #ifndef __MSDOS__
100: static char *term_buffer = (char *)NULL;
101: static char *term_string_buffer = (char *)NULL;
102: #endif
103:
104: static int tcap_initialized;
105:
106: #if !defined (__linux__) && !defined (NCURSES_VERSION)
107: # if defined (__EMX__) || defined (NEED_EXTERN_PC)
108: extern
109: # endif /* __EMX__ || NEED_EXTERN_PC */
110: char PC, *BC, *UP;
111: #endif /* !__linux__ && !NCURSES_VERSION */
112:
113: /* Some strings to control terminal actions. These are output by tputs (). */
114: char *_rl_term_clreol;
115: char *_rl_term_clrpag;
116: char *_rl_term_cr;
117: char *_rl_term_backspace;
118: char *_rl_term_goto;
119: char *_rl_term_pc;
120:
121: /* Non-zero if we determine that the terminal can do character insertion. */
122: int _rl_terminal_can_insert = 0;
123:
124: /* How to insert characters. */
125: char *_rl_term_im;
126: char *_rl_term_ei;
127: char *_rl_term_ic;
128: char *_rl_term_ip;
129: char *_rl_term_IC;
130:
131: /* How to delete characters. */
132: char *_rl_term_dc;
133: char *_rl_term_DC;
134:
135: char *_rl_term_forward_char;
136:
137: /* How to go up a line. */
138: char *_rl_term_up;
139:
140: /* A visible bell; char if the terminal can be made to flash the screen. */
141: static char *_rl_visible_bell;
142:
143: /* Non-zero means the terminal can auto-wrap lines. */
144: int _rl_term_autowrap = -1;
145:
146: /* Non-zero means that this terminal has a meta key. */
147: static int term_has_meta;
148:
149: /* The sequences to write to turn on and off the meta key, if this
150: terminal has one. */
151: static char *_rl_term_mm;
152: static char *_rl_term_mo;
153:
154: /* The key sequences output by the arrow keys, if this terminal has any. */
155: static char *_rl_term_ku;
156: static char *_rl_term_kd;
157: static char *_rl_term_kr;
158: static char *_rl_term_kl;
159:
160: /* How to initialize and reset the arrow keys, if this terminal has any. */
161: static char *_rl_term_ks;
162: static char *_rl_term_ke;
163:
164: /* The key sequences sent by the Home and End keys, if any. */
165: static char *_rl_term_kh;
166: static char *_rl_term_kH;
167: static char *_rl_term_at7; /* @7 */
168:
169: /* Delete key */
170: static char *_rl_term_kD;
171:
172: /* Insert key */
173: static char *_rl_term_kI;
174:
175: /* Cursor control */
176: static char *_rl_term_vs; /* very visible */
177: static char *_rl_term_ve; /* normal */
178:
179: static void bind_termcap_arrow_keys PARAMS((Keymap));
180:
181: /* Variables that hold the screen dimensions, used by the display code. */
182: int _rl_screenwidth, _rl_screenheight, _rl_screenchars;
183:
184: /* Non-zero means the user wants to enable the keypad. */
185: int _rl_enable_keypad;
186:
187: /* Non-zero means the user wants to enable a meta key. */
188: int _rl_enable_meta = 1;
189:
190: #if defined (__EMX__)
191: static void
192: _emx_get_screensize (swp, shp)
193: int *swp, *shp;
194: {
195: int sz[2];
196:
197: _scrsize (sz);
198:
199: if (swp)
200: *swp = sz[0];
201: if (shp)
202: *shp = sz[1];
203: }
204: #endif
205:
206: #if defined (__MINGW32__)
207: static void
208: _win_get_screensize (swp, shp)
209: int *swp, *shp;
210: {
211: HANDLE hConOut;
212: CONSOLE_SCREEN_BUFFER_INFO scr;
213:
214: hConOut = GetStdHandle (STD_OUTPUT_HANDLE);
215: if (hConOut != INVALID_HANDLE_VALUE)
216: {
217: if (GetConsoleScreenBufferInfo (hConOut, &scr))
218: {
219: *swp = scr.dwSize.X;
220: *shp = scr.srWindow.Bottom - scr.srWindow.Top + 1;
221: }
222: }
223: }
224: #endif
225:
226: /* Get readline's idea of the screen size. TTY is a file descriptor open
227: to the terminal. If IGNORE_ENV is true, we do not pay attention to the
228: values of $LINES and $COLUMNS. The tests for TERM_STRING_BUFFER being
229: non-null serve to check whether or not we have initialized termcap. */
230: void
231: _rl_get_screen_size (tty, ignore_env)
232: int tty, ignore_env;
233: {
234: char *ss;
235: #if defined (TIOCGWINSZ)
236: struct winsize window_size;
237: #endif /* TIOCGWINSZ */
238: int wr, wc;
239:
240: wr = wc = -1;
241: #if defined (TIOCGWINSZ)
242: if (ioctl (tty, TIOCGWINSZ, &window_size) == 0)
243: {
244: wc = (int) window_size.ws_col;
245: wr = (int) window_size.ws_row;
246: }
247: #endif /* TIOCGWINSZ */
248:
249: #if defined (__EMX__)
250: _emx_get_screensize (&wc, &wr);
251: #elif defined (__MINGW32__)
252: _win_get_screensize (&wc, &wr);
253: #endif
254:
255: if (ignore_env || rl_prefer_env_winsize == 0)
256: {
257: _rl_screenwidth = wc;
258: _rl_screenheight = wr;
259: }
260: else
261: _rl_screenwidth = _rl_screenheight = -1;
262:
263: /* Environment variable COLUMNS overrides setting of "co" if IGNORE_ENV
264: is unset. If we prefer the environment, check it first before
265: assigning the value returned by the kernel. */
266: if (_rl_screenwidth <= 0)
267: {
268: if (ignore_env == 0 && (ss = sh_get_env_value ("COLUMNS")))
269: _rl_screenwidth = atoi (ss);
270:
271: if (_rl_screenwidth <= 0)
272: _rl_screenwidth = wc;
273:
274: #if defined (__DJGPP__)
275: if (_rl_screenwidth <= 0)
276: _rl_screenwidth = ScreenCols ();
277: #else
278: if (_rl_screenwidth <= 0 && term_string_buffer)
279: _rl_screenwidth = tgetnum ("co");
280: #endif
281: }
282:
283: /* Environment variable LINES overrides setting of "li" if IGNORE_ENV
284: is unset. */
285: if (_rl_screenheight <= 0)
286: {
287: if (ignore_env == 0 && (ss = sh_get_env_value ("LINES")))
288: _rl_screenheight = atoi (ss);
289:
290: if (_rl_screenheight <= 0)
291: _rl_screenheight = wr;
292:
293: #if defined (__DJGPP__)
294: if (_rl_screenheight <= 0)
295: _rl_screenheight = ScreenRows ();
296: #else
297: if (_rl_screenheight <= 0 && term_string_buffer)
298: _rl_screenheight = tgetnum ("li");
299: #endif
300: }
301:
302: /* If all else fails, default to 80x24 terminal. */
303: if (_rl_screenwidth <= 1)
304: _rl_screenwidth = 80;
305:
306: if (_rl_screenheight <= 0)
307: _rl_screenheight = 24;
308:
309: /* If we're being compiled as part of bash, set the environment
310: variables $LINES and $COLUMNS to new values. Otherwise, just
311: do a pair of putenv () or setenv () calls. */
312: if (rl_change_environment)
313: sh_set_lines_and_columns (_rl_screenheight, _rl_screenwidth);
314:
315: if (_rl_term_autowrap == 0)
316: _rl_screenwidth--;
317:
318: _rl_screenchars = _rl_screenwidth * _rl_screenheight;
319: }
320:
321: void
322: _rl_set_screen_size (rows, cols)
323: int rows, cols;
324: {
325: if (_rl_term_autowrap == -1)
326: _rl_init_terminal_io (rl_terminal_name);
327:
328: if (rows > 0)
329: _rl_screenheight = rows;
330: if (cols > 0)
331: {
332: _rl_screenwidth = cols;
333: if (_rl_term_autowrap == 0)
334: _rl_screenwidth--;
335: }
336:
337: if (rows > 0 || cols > 0)
338: _rl_screenchars = _rl_screenwidth * _rl_screenheight;
339: }
340:
341: void
342: rl_set_screen_size (rows, cols)
343: int rows, cols;
344: {
345: _rl_set_screen_size (rows, cols);
346: }
347:
348: void
349: rl_get_screen_size (rows, cols)
350: int *rows, *cols;
351: {
352: if (rows)
353: *rows = _rl_screenheight;
354: if (cols)
355: *cols = _rl_screenwidth;
356: }
357:
358: void
359: rl_reset_screen_size ()
360: {
361: _rl_get_screen_size (fileno (rl_instream), 0);
362: }
363:
364: void
365: _rl_sigwinch_resize_terminal ()
366: {
367: _rl_get_screen_size (fileno (rl_instream), 1);
368: }
369:
370: void
371: rl_resize_terminal ()
372: {
373: _rl_get_screen_size (fileno (rl_instream), 1);
374: if (_rl_echoing_p)
375: {
376: if (CUSTOM_REDISPLAY_FUNC ())
377: rl_forced_update_display ();
378: else if (RL_ISSTATE(RL_STATE_REDISPLAYING) == 0)
379: _rl_redisplay_after_sigwinch ();
380: }
381: }
382:
383: struct _tc_string {
384: const char * const tc_var;
385: char **tc_value;
386: };
387:
388: /* This should be kept sorted, just in case we decide to change the
389: search algorithm to something smarter. */
390: static const struct _tc_string tc_strings[] =
391: {
392: { "@7", &_rl_term_at7 },
393: { "DC", &_rl_term_DC },
394: { "IC", &_rl_term_IC },
395: { "ce", &_rl_term_clreol },
396: { "cl", &_rl_term_clrpag },
397: { "cr", &_rl_term_cr },
398: { "dc", &_rl_term_dc },
399: { "ei", &_rl_term_ei },
400: { "ic", &_rl_term_ic },
401: { "im", &_rl_term_im },
402: { "kD", &_rl_term_kD }, /* delete */
403: { "kH", &_rl_term_kH }, /* home down ?? */
404: { "kI", &_rl_term_kI }, /* insert */
405: { "kd", &_rl_term_kd },
406: { "ke", &_rl_term_ke }, /* end keypad mode */
407: { "kh", &_rl_term_kh }, /* home */
408: { "kl", &_rl_term_kl },
409: { "kr", &_rl_term_kr },
410: { "ks", &_rl_term_ks }, /* start keypad mode */
411: { "ku", &_rl_term_ku },
412: { "le", &_rl_term_backspace },
413: { "mm", &_rl_term_mm },
414: { "mo", &_rl_term_mo },
415: { "nd", &_rl_term_forward_char },
416: { "pc", &_rl_term_pc },
417: { "up", &_rl_term_up },
418: { "vb", &_rl_visible_bell },
419: { "vs", &_rl_term_vs },
420: { "ve", &_rl_term_ve },
421: };
422:
423: #define NUM_TC_STRINGS (sizeof (tc_strings) / sizeof (struct _tc_string))
424:
425: /* Read the desired terminal capability strings into BP. The capabilities
426: are described in the TC_STRINGS table. */
427: static void
428: get_term_capabilities (bp)
429: char **bp;
430: {
431: #if !defined (__DJGPP__) /* XXX - doesn't DJGPP have a termcap library? */
432: register int i;
433:
434: for (i = 0; i < NUM_TC_STRINGS; i++)
435: *(tc_strings[i].tc_value) = tgetstr ((char *)tc_strings[i].tc_var, bp);
436: #endif
437: tcap_initialized = 1;
438: }
439:
440: int
441: _rl_init_terminal_io (terminal_name)
442: const char *terminal_name;
443: {
444: const char *term;
445: char *buffer;
446: int tty, tgetent_ret;
447:
448: term = terminal_name ? terminal_name : sh_get_env_value ("TERM");
449: _rl_term_clrpag = _rl_term_cr = _rl_term_clreol = (char *)NULL;
450: tty = rl_instream ? fileno (rl_instream) : 0;
451:
452: if (term == 0)
453: term = "dumb";
454:
455: #ifdef __MSDOS__
456: _rl_term_im = _rl_term_ei = _rl_term_ic = _rl_term_IC = (char *)NULL;
457: _rl_term_up = _rl_term_dc = _rl_term_DC = _rl_visible_bell = (char *)NULL;
458: _rl_term_ku = _rl_term_kd = _rl_term_kl = _rl_term_kr = (char *)NULL;
459: _rl_term_mm = _rl_term_mo = (char *)NULL;
460: _rl_terminal_can_insert = term_has_meta = _rl_term_autowrap = 0;
461: _rl_term_cr = "\r";
462: _rl_term_clreol = _rl_term_clrpag = _rl_term_backspace = (char *)NULL;
463: _rl_term_goto = _rl_term_pc = _rl_term_ip = (char *)NULL;
464: _rl_term_ks = _rl_term_ke =_rl_term_vs = _rl_term_ve = (char *)NULL;
465: _rl_term_kh = _rl_term_kH = _rl_term_at7 = _rl_term_kI = (char *)NULL;
466: #if defined(HACK_TERMCAP_MOTION)
467: _rl_term_forward_char = (char *)NULL;
468: #endif
469:
470: _rl_get_screen_size (tty, 0);
471: #else /* !__MSDOS__ */
472: /* I've separated this out for later work on not calling tgetent at all
473: if the calling application has supplied a custom redisplay function,
474: (and possibly if the application has supplied a custom input function). */
475: if (CUSTOM_REDISPLAY_FUNC())
476: {
477: tgetent_ret = -1;
478: }
479: else
480: {
481: if (term_string_buffer == 0)
482: term_string_buffer = (char *)xmalloc(2032);
483:
484: if (term_buffer == 0)
485: term_buffer = (char *)xmalloc(4080);
486:
487: buffer = term_string_buffer;
488:
489: tgetent_ret = tgetent (term_buffer, term);
490: }
491:
492: if (tgetent_ret <= 0)
493: {
494: FREE (term_string_buffer);
495: FREE (term_buffer);
496: buffer = term_buffer = term_string_buffer = (char *)NULL;
497:
498: _rl_term_autowrap = 0; /* used by _rl_get_screen_size */
499:
500: /* Allow calling application to set default height and width, using
501: rl_set_screen_size */
502: if (_rl_screenwidth <= 0 || _rl_screenheight <= 0)
503: {
504: #if defined (__EMX__)
505: _emx_get_screensize (&_rl_screenwidth, &_rl_screenheight);
506: _rl_screenwidth--;
507: #else /* !__EMX__ */
508: _rl_get_screen_size (tty, 0);
509: #endif /* !__EMX__ */
510: }
511:
512: /* Defaults. */
513: if (_rl_screenwidth <= 0 || _rl_screenheight <= 0)
514: {
515: _rl_screenwidth = 79;
516: _rl_screenheight = 24;
517: }
518:
519: /* Everything below here is used by the redisplay code (tputs). */
520: _rl_screenchars = _rl_screenwidth * _rl_screenheight;
521: _rl_term_cr = "\r";
522: _rl_term_im = _rl_term_ei = _rl_term_ic = _rl_term_IC = (char *)NULL;
523: _rl_term_up = _rl_term_dc = _rl_term_DC = _rl_visible_bell = (char *)NULL;
524: _rl_term_ku = _rl_term_kd = _rl_term_kl = _rl_term_kr = (char *)NULL;
525: _rl_term_kh = _rl_term_kH = _rl_term_kI = _rl_term_kD = (char *)NULL;
526: _rl_term_ks = _rl_term_ke = _rl_term_at7 = (char *)NULL;
527: _rl_term_mm = _rl_term_mo = (char *)NULL;
528: _rl_term_ve = _rl_term_vs = (char *)NULL;
529: _rl_term_forward_char = (char *)NULL;
530: _rl_terminal_can_insert = term_has_meta = 0;
531:
532: /* Reasonable defaults for tgoto(). Readline currently only uses
533: tgoto if _rl_term_IC or _rl_term_DC is defined, but just in case we
534: change that later... */
535: PC = '\0';
536: BC = _rl_term_backspace = "\b";
537: UP = _rl_term_up;
538:
539: return 0;
540: }
541:
542: get_term_capabilities (&buffer);
543:
544: /* Set up the variables that the termcap library expects the application
545: to provide. */
546: PC = _rl_term_pc ? *_rl_term_pc : 0;
547: BC = _rl_term_backspace;
548: UP = _rl_term_up;
549:
550: if (!_rl_term_cr)
551: _rl_term_cr = "\r";
552:
553: _rl_term_autowrap = tgetflag ("am") && tgetflag ("xn");
554:
555: /* Allow calling application to set default height and width, using
556: rl_set_screen_size */
557: if (_rl_screenwidth <= 0 || _rl_screenheight <= 0)
558: _rl_get_screen_size (tty, 0);
559:
560: /* "An application program can assume that the terminal can do
561: character insertion if *any one of* the capabilities `IC',
562: `im', `ic' or `ip' is provided." But we can't do anything if
563: only `ip' is provided, so... */
564: _rl_terminal_can_insert = (_rl_term_IC || _rl_term_im || _rl_term_ic);
565:
566: /* Check to see if this terminal has a meta key and clear the capability
567: variables if there is none. */
568: term_has_meta = tgetflag ("km") != 0;
569: if (term_has_meta == 0)
570: _rl_term_mm = _rl_term_mo = (char *)NULL;
571: #endif /* !__MSDOS__ */
572:
573: /* Attempt to find and bind the arrow keys. Do not override already
574: bound keys in an overzealous attempt, however. */
575:
576: bind_termcap_arrow_keys (emacs_standard_keymap);
577:
578: #if defined (VI_MODE)
579: bind_termcap_arrow_keys (vi_movement_keymap);
580: bind_termcap_arrow_keys (vi_insertion_keymap);
581: #endif /* VI_MODE */
582:
583: return 0;
584: }
585:
586: /* Bind the arrow key sequences from the termcap description in MAP. */
587: static void
588: bind_termcap_arrow_keys (map)
589: Keymap map;
590: {
591: Keymap xkeymap;
592:
593: xkeymap = _rl_keymap;
594: _rl_keymap = map;
595:
596: rl_bind_keyseq_if_unbound (_rl_term_ku, rl_get_previous_history);
597: rl_bind_keyseq_if_unbound (_rl_term_kd, rl_get_next_history);
598: rl_bind_keyseq_if_unbound (_rl_term_kr, rl_forward_char);
599: rl_bind_keyseq_if_unbound (_rl_term_kl, rl_backward_char);
600:
601: rl_bind_keyseq_if_unbound (_rl_term_kh, rl_beg_of_line); /* Home */
602: rl_bind_keyseq_if_unbound (_rl_term_at7, rl_end_of_line); /* End */
603:
604: rl_bind_keyseq_if_unbound (_rl_term_kD, rl_delete);
605:
606: _rl_keymap = xkeymap;
607: }
608:
609: char *
610: rl_get_termcap (cap)
611: const char *cap;
612: {
613: register int i;
614:
615: if (tcap_initialized == 0)
616: return ((char *)NULL);
617: for (i = 0; i < NUM_TC_STRINGS; i++)
618: {
619: if (tc_strings[i].tc_var[0] == cap[0] && strcmp (tc_strings[i].tc_var, cap) == 0)
620: return *(tc_strings[i].tc_value);
621: }
622: return ((char *)NULL);
623: }
624:
625: /* Re-initialize the terminal considering that the TERM/TERMCAP variable
626: has changed. */
627: int
628: rl_reset_terminal (terminal_name)
629: const char *terminal_name;
630: {
631: _rl_screenwidth = _rl_screenheight = 0;
632: _rl_init_terminal_io (terminal_name);
633: return 0;
634: }
635:
636: /* A function for the use of tputs () */
637: #ifdef _MINIX
638: void
639: _rl_output_character_function (c)
640: int c;
641: {
642: putc (c, _rl_out_stream);
643: }
644: #else /* !_MINIX */
645: int
646: _rl_output_character_function (c)
647: int c;
648: {
649: return putc (c, _rl_out_stream);
650: }
651: #endif /* !_MINIX */
652:
653: /* Write COUNT characters from STRING to the output stream. */
654: void
655: _rl_output_some_chars (string, count)
656: const char *string;
657: int count;
658: {
659: fwrite (string, 1, count, _rl_out_stream);
660: }
661:
662: /* Move the cursor back. */
663: int
664: _rl_backspace (count)
665: int count;
666: {
667: register int i;
668:
669: #ifndef __MSDOS__
670: if (_rl_term_backspace)
671: for (i = 0; i < count; i++)
672: tputs (_rl_term_backspace, 1, _rl_output_character_function);
673: else
674: #endif
675: for (i = 0; i < count; i++)
676: putc ('\b', _rl_out_stream);
677: return 0;
678: }
679:
680: /* Move to the start of the next line. */
681: int
682: rl_crlf ()
683: {
684: #if defined (NEW_TTY_DRIVER) || defined (__MINT__)
685: if (_rl_term_cr)
686: tputs (_rl_term_cr, 1, _rl_output_character_function);
687: #endif /* NEW_TTY_DRIVER || __MINT__ */
688: putc ('\n', _rl_out_stream);
689: return 0;
690: }
691:
692: /* Ring the terminal bell. */
693: int
694: rl_ding ()
695: {
696: if (_rl_echoing_p)
697: {
698: switch (_rl_bell_preference)
699: {
700: case NO_BELL:
701: default:
702: break;
703: case VISIBLE_BELL:
704: if (_rl_visible_bell)
705: {
706: #ifdef __DJGPP__
707: ScreenVisualBell ();
708: #else
709: tputs (_rl_visible_bell, 1, _rl_output_character_function);
710: #endif
711: break;
712: }
713: /* FALLTHROUGH */
714: case AUDIBLE_BELL:
715: fprintf (stderr, "\007");
716: fflush (stderr);
717: break;
718: }
719: return (0);
720: }
721: return (-1);
722: }
723:
724: /* **************************************************************** */
725: /* */
726: /* Controlling the Meta Key and Keypad */
727: /* */
728: /* **************************************************************** */
729:
730: static int enabled_meta = 0; /* flag indicating we enabled meta mode */
731:
732: void
733: _rl_enable_meta_key ()
734: {
735: #if !defined (__DJGPP__)
736: if (term_has_meta && _rl_term_mm)
737: {
738: tputs (_rl_term_mm, 1, _rl_output_character_function);
739: enabled_meta = 1;
740: }
741: #endif
742: }
743:
744: void
745: _rl_disable_meta_key ()
746: {
747: #if !defined (__DJGPP__)
748: if (term_has_meta && _rl_term_mo && enabled_meta)
749: {
750: tputs (_rl_term_mo, 1, _rl_output_character_function);
751: enabled_meta = 0;
752: }
753: #endif
754: }
755:
756: void
757: _rl_control_keypad (on)
758: int on;
759: {
760: #if !defined (__DJGPP__)
761: if (on && _rl_term_ks)
762: tputs (_rl_term_ks, 1, _rl_output_character_function);
763: else if (!on && _rl_term_ke)
764: tputs (_rl_term_ke, 1, _rl_output_character_function);
765: #endif
766: }
767:
768: /* **************************************************************** */
769: /* */
770: /* Controlling the Cursor */
771: /* */
772: /* **************************************************************** */
773:
774: /* Set the cursor appropriately depending on IM, which is one of the
775: insert modes (insert or overwrite). Insert mode gets the normal
776: cursor. Overwrite mode gets a very visible cursor. Only does
777: anything if we have both capabilities. */
778: void
779: _rl_set_cursor (im, force)
780: int im, force;
781: {
782: #ifndef __MSDOS__
783: if (_rl_term_ve && _rl_term_vs)
784: {
785: if (force || im != rl_insert_mode)
786: {
787: if (im == RL_IM_OVERWRITE)
788: tputs (_rl_term_vs, 1, _rl_output_character_function);
789: else
790: tputs (_rl_term_ve, 1, _rl_output_character_function);
791: }
792: }
793: #endif
794: }
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