Commit | Line | Data |
---|---|---|
f377b406 | 1 | /* TUI support I/O functions. |
f33c6cbf | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007 |
4 | Free Software Foundation, Inc. | |
f33c6cbf | 5 | |
f377b406 SC |
6 | Contributed by Hewlett-Packard Company. |
7 | ||
8 | This file is part of GDB. | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
14 | ||
15 | This program is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with this program; if not, write to the Free Software | |
88d83552 EZ |
22 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
23 | Boston, MA 02110-1301, USA. */ | |
c906108c | 24 | |
c906108c | 25 | #include "defs.h" |
a198b876 SC |
26 | #include "target.h" |
27 | #include "event-loop.h" | |
e09d2eba | 28 | #include "event-top.h" |
a198b876 SC |
29 | #include "command.h" |
30 | #include "top.h" | |
d7b2e967 AC |
31 | #include "tui/tui.h" |
32 | #include "tui/tui-data.h" | |
33 | #include "tui/tui-io.h" | |
34 | #include "tui/tui-command.h" | |
35 | #include "tui/tui-win.h" | |
36 | #include "tui/tui-wingeneral.h" | |
37 | #include "tui/tui-file.h" | |
a198b876 SC |
38 | #include "ui-out.h" |
39 | #include "cli-out.h" | |
40 | #include <fcntl.h> | |
9d876a16 | 41 | #include <signal.h> |
96ec9981 DJ |
42 | #include <stdio.h> |
43 | ||
6a83354a | 44 | #include "gdb_curses.h" |
a198b876 | 45 | |
4a1bcc8c MK |
46 | /* This redefines CTRL if it is not already defined, so it must come |
47 | after terminal state releated include files like <term.h> and | |
48 | "gdb_curses.h". */ | |
49 | #include "readline/readline.h" | |
50 | ||
bcdf1568 AC |
51 | int |
52 | key_is_start_sequence (int ch) | |
53 | { | |
54 | return (ch == 27); | |
55 | } | |
56 | ||
57 | int | |
58 | key_is_end_sequence (int ch) | |
59 | { | |
60 | return (ch == 126); | |
61 | } | |
62 | ||
63 | int | |
64 | key_is_backspace (int ch) | |
65 | { | |
66 | return (ch == 8); | |
67 | } | |
68 | ||
69 | int | |
70 | key_is_command_char (int ch) | |
71 | { | |
72 | return ((ch == KEY_NPAGE) || (ch == KEY_PPAGE) | |
73 | || (ch == KEY_LEFT) || (ch == KEY_RIGHT) | |
74 | || (ch == KEY_UP) || (ch == KEY_DOWN) | |
75 | || (ch == KEY_SF) || (ch == KEY_SR) | |
76 | || (ch == (int)'\f') || key_is_start_sequence (ch)); | |
77 | } | |
78 | ||
ec6f8892 SC |
79 | /* Use definition from readline 4.3. */ |
80 | #undef CTRL_CHAR | |
81 | #define CTRL_CHAR(c) ((c) < control_character_threshold && (((c) & 0x80) == 0)) | |
82 | ||
a198b876 SC |
83 | /* This file controls the IO interactions between gdb and curses. |
84 | When the TUI is enabled, gdb has two modes a curses and a standard | |
85 | mode. | |
86 | ||
87 | In curses mode, the gdb outputs are made in a curses command window. | |
88 | For this, the gdb_stdout and gdb_stderr are redirected to the specific | |
89 | ui_file implemented by TUI. The output is handled by tui_puts(). | |
90 | The input is also controlled by curses with tui_getc(). The readline | |
91 | library uses this function to get its input. Several readline hooks | |
92 | are installed to redirect readline output to the TUI (see also the | |
93 | note below). | |
94 | ||
95 | In normal mode, the gdb outputs are restored to their origin, that | |
96 | is as if TUI is not used. Readline also uses its original getc() | |
97 | function with stdin. | |
98 | ||
8cee930b SC |
99 | Note SCz/2001-07-21: the current readline is not clean in its management of |
100 | the output. Even if we install a redisplay handler, it sometimes writes on | |
101 | a stdout file. It is important to redirect every output produced by | |
102 | readline, otherwise the curses window will be garbled. This is implemented | |
103 | with a pipe that TUI reads and readline writes to. A gdb input handler | |
a198b876 SC |
104 | is created so that reading the pipe is handled automatically. |
105 | This will probably not work on non-Unix platforms. The best fix is | |
8cee930b SC |
106 | to make readline clean enougth so that is never write on stdout. |
107 | ||
108 | Note SCz/2002-09-01: we now use more readline hooks and it seems that | |
109 | with them we don't need the pipe anymore (verified by creating the pipe | |
110 | and closing its end so that write causes a SIGPIPE). The old pipe code | |
111 | is still there and can be conditionally removed by | |
112 | #undef TUI_USE_PIPE_FOR_READLINE. */ | |
113 | ||
114 | /* For gdb 5.3, prefer to continue the pipe hack as a backup wheel. */ | |
115 | #define TUI_USE_PIPE_FOR_READLINE | |
116 | /*#undef TUI_USE_PIPE_FOR_READLINE*/ | |
a198b876 SC |
117 | |
118 | /* TUI output files. */ | |
119 | static struct ui_file *tui_stdout; | |
120 | static struct ui_file *tui_stderr; | |
2b68e2c5 | 121 | struct ui_out *tui_out; |
a198b876 SC |
122 | |
123 | /* GDB output files in non-curses mode. */ | |
124 | static struct ui_file *tui_old_stdout; | |
125 | static struct ui_file *tui_old_stderr; | |
2b68e2c5 | 126 | struct ui_out *tui_old_uiout; |
a198b876 SC |
127 | |
128 | /* Readline previous hooks. */ | |
129 | static Function *tui_old_rl_getc_function; | |
130 | static VFunction *tui_old_rl_redisplay_function; | |
131 | static VFunction *tui_old_rl_prep_terminal; | |
132 | static VFunction *tui_old_rl_deprep_terminal; | |
133 | static int tui_old_readline_echoing_p; | |
134 | ||
135 | /* Readline output stream. | |
136 | Should be removed when readline is clean. */ | |
137 | static FILE *tui_rl_outstream; | |
138 | static FILE *tui_old_rl_outstream; | |
8cee930b | 139 | #ifdef TUI_USE_PIPE_FOR_READLINE |
a198b876 | 140 | static int tui_readline_pipe[2]; |
8cee930b | 141 | #endif |
c906108c | 142 | |
57266a33 SC |
143 | /* The last gdb prompt that was registered in readline. |
144 | This may be the main gdb prompt or a secondary prompt. */ | |
145 | static char *tui_rl_saved_prompt; | |
146 | ||
6ba8e26f | 147 | static unsigned int tui_handle_resize_during_io (unsigned int); |
c906108c | 148 | |
8cee930b SC |
149 | static void |
150 | tui_putc (char c) | |
151 | { | |
152 | char buf[2]; | |
153 | ||
154 | buf[0] = c; | |
155 | buf[1] = 0; | |
156 | tui_puts (buf); | |
157 | } | |
c906108c | 158 | |
a198b876 | 159 | /* Print the string in the curses command window. */ |
c906108c | 160 | void |
a198b876 | 161 | tui_puts (const char *string) |
c906108c | 162 | { |
a198b876 SC |
163 | static int tui_skip_line = -1; |
164 | char c; | |
165 | WINDOW *w; | |
c906108c | 166 | |
6d012f14 | 167 | w = TUI_CMD_WIN->generic.handle; |
a198b876 | 168 | while ((c = *string++) != 0) |
c906108c | 169 | { |
a198b876 SC |
170 | /* Catch annotation and discard them. We need two \032 and |
171 | discard until a \n is seen. */ | |
172 | if (c == '\032') | |
173 | { | |
174 | tui_skip_line++; | |
175 | } | |
176 | else if (tui_skip_line != 1) | |
177 | { | |
178 | tui_skip_line = -1; | |
179 | waddch (w, c); | |
180 | } | |
181 | else if (c == '\n') | |
182 | tui_skip_line = -1; | |
183 | } | |
6d012f14 AC |
184 | getyx (w, TUI_CMD_WIN->detail.command_info.cur_line, |
185 | TUI_CMD_WIN->detail.command_info.curch); | |
186 | TUI_CMD_WIN->detail.command_info.start_line = TUI_CMD_WIN->detail.command_info.cur_line; | |
a198b876 SC |
187 | |
188 | /* We could defer the following. */ | |
189 | wrefresh (w); | |
190 | fflush (stdout); | |
191 | } | |
192 | ||
193 | /* Readline callback. | |
194 | Redisplay the command line with its prompt after readline has | |
195 | changed the edited text. */ | |
e09d2eba | 196 | void |
a198b876 SC |
197 | tui_redisplay_readline (void) |
198 | { | |
199 | int prev_col; | |
200 | int height; | |
201 | int col, line; | |
202 | int c_pos; | |
203 | int c_line; | |
204 | int in; | |
205 | WINDOW *w; | |
206 | char *prompt; | |
207 | int start_line; | |
e3da6fc5 SC |
208 | |
209 | /* Detect when we temporarily left SingleKey and now the readline | |
210 | edit buffer is empty, automatically restore the SingleKey mode. */ | |
6d012f14 AC |
211 | if (tui_current_key_mode == TUI_ONE_COMMAND_MODE && rl_end == 0) |
212 | tui_set_key_mode (TUI_SINGLE_KEY_MODE); | |
e3da6fc5 | 213 | |
6d012f14 | 214 | if (tui_current_key_mode == TUI_SINGLE_KEY_MODE) |
e09d2eba SC |
215 | prompt = ""; |
216 | else | |
57266a33 | 217 | prompt = tui_rl_saved_prompt; |
a198b876 SC |
218 | |
219 | c_pos = -1; | |
220 | c_line = -1; | |
6d012f14 AC |
221 | w = TUI_CMD_WIN->generic.handle; |
222 | start_line = TUI_CMD_WIN->detail.command_info.start_line; | |
a198b876 SC |
223 | wmove (w, start_line, 0); |
224 | prev_col = 0; | |
225 | height = 1; | |
226 | for (in = 0; prompt && prompt[in]; in++) | |
227 | { | |
228 | waddch (w, prompt[in]); | |
229 | getyx (w, line, col); | |
230 | if (col < prev_col) | |
231 | height++; | |
232 | prev_col = col; | |
233 | } | |
234 | for (in = 0; in < rl_end; in++) | |
235 | { | |
236 | unsigned char c; | |
237 | ||
238 | c = (unsigned char) rl_line_buffer[in]; | |
239 | if (in == rl_point) | |
240 | { | |
241 | getyx (w, c_line, c_pos); | |
242 | } | |
243 | ||
244 | if (CTRL_CHAR (c) || c == RUBOUT) | |
245 | { | |
246 | waddch (w, '^'); | |
247 | waddch (w, CTRL_CHAR (c) ? UNCTRL (c) : '?'); | |
248 | } | |
c906108c SS |
249 | else |
250 | { | |
a198b876 | 251 | waddch (w, c); |
c906108c | 252 | } |
a198b876 SC |
253 | if (c == '\n') |
254 | { | |
6d012f14 AC |
255 | getyx (w, TUI_CMD_WIN->detail.command_info.start_line, |
256 | TUI_CMD_WIN->detail.command_info.curch); | |
a198b876 SC |
257 | } |
258 | getyx (w, line, col); | |
259 | if (col < prev_col) | |
260 | height++; | |
261 | prev_col = col; | |
c906108c | 262 | } |
a198b876 | 263 | wclrtobot (w); |
6d012f14 AC |
264 | getyx (w, TUI_CMD_WIN->detail.command_info.start_line, |
265 | TUI_CMD_WIN->detail.command_info.curch); | |
a198b876 | 266 | if (c_line >= 0) |
d75e970c SC |
267 | { |
268 | wmove (w, c_line, c_pos); | |
6d012f14 AC |
269 | TUI_CMD_WIN->detail.command_info.cur_line = c_line; |
270 | TUI_CMD_WIN->detail.command_info.curch = c_pos; | |
d75e970c | 271 | } |
6d012f14 | 272 | TUI_CMD_WIN->detail.command_info.start_line -= height - 1; |
a198b876 | 273 | |
a198b876 SC |
274 | wrefresh (w); |
275 | fflush(stdout); | |
276 | } | |
277 | ||
278 | /* Readline callback to prepare the terminal. It is called once | |
57266a33 | 279 | each time we enter readline. Terminal is already setup in curses mode. */ |
a198b876 | 280 | static void |
88fa91b4 | 281 | tui_prep_terminal (int notused1) |
c906108c | 282 | { |
57266a33 SC |
283 | /* Save the prompt registered in readline to correctly display it. |
284 | (we can't use gdb_prompt() due to secondary prompts and can't use | |
285 | rl_prompt because it points to an alloca buffer). */ | |
286 | xfree (tui_rl_saved_prompt); | |
287 | tui_rl_saved_prompt = xstrdup (rl_prompt); | |
a198b876 | 288 | } |
c906108c | 289 | |
a198b876 SC |
290 | /* Readline callback to restore the terminal. It is called once |
291 | each time we leave readline. There is nothing to do in curses mode. */ | |
292 | static void | |
293 | tui_deprep_terminal (void) | |
294 | { | |
295 | } | |
c906108c | 296 | |
8cee930b | 297 | #ifdef TUI_USE_PIPE_FOR_READLINE |
a198b876 SC |
298 | /* Read readline output pipe and feed the command window with it. |
299 | Should be removed when readline is clean. */ | |
300 | static void | |
301 | tui_readline_output (int code, gdb_client_data data) | |
302 | { | |
303 | int size; | |
304 | char buf[256]; | |
c906108c | 305 | |
a198b876 SC |
306 | size = read (tui_readline_pipe[0], buf, sizeof (buf) - 1); |
307 | if (size > 0 && tui_active) | |
c906108c | 308 | { |
a198b876 SC |
309 | buf[size] = 0; |
310 | tui_puts (buf); | |
c906108c | 311 | } |
a198b876 | 312 | } |
8cee930b SC |
313 | #endif |
314 | ||
315 | /* Return the portion of PATHNAME that should be output when listing | |
316 | possible completions. If we are hacking filename completion, we | |
317 | are only interested in the basename, the portion following the | |
318 | final slash. Otherwise, we return what we were passed. | |
319 | ||
320 | Comes from readline/complete.c */ | |
321 | static char * | |
d02c80cd | 322 | printable_part (char *pathname) |
8cee930b SC |
323 | { |
324 | char *temp; | |
325 | ||
326 | temp = rl_filename_completion_desired ? strrchr (pathname, '/') : (char *)NULL; | |
327 | #if defined (__MSDOS__) | |
328 | if (rl_filename_completion_desired && temp == 0 && isalpha (pathname[0]) && pathname[1] == ':') | |
329 | temp = pathname + 1; | |
330 | #endif | |
331 | return (temp ? ++temp : pathname); | |
332 | } | |
333 | ||
334 | /* Output TO_PRINT to rl_outstream. If VISIBLE_STATS is defined and we | |
335 | are using it, check for and output a single character for `special' | |
336 | filenames. Return the number of characters we output. */ | |
337 | ||
338 | #define PUTX(c) \ | |
339 | do { \ | |
340 | if (CTRL_CHAR (c)) \ | |
341 | { \ | |
342 | tui_puts ("^"); \ | |
343 | tui_putc (UNCTRL (c)); \ | |
344 | printed_len += 2; \ | |
345 | } \ | |
346 | else if (c == RUBOUT) \ | |
347 | { \ | |
348 | tui_puts ("^?"); \ | |
349 | printed_len += 2; \ | |
350 | } \ | |
351 | else \ | |
352 | { \ | |
353 | tui_putc (c); \ | |
354 | printed_len++; \ | |
355 | } \ | |
356 | } while (0) | |
357 | ||
358 | static int | |
d02c80cd | 359 | print_filename (char *to_print, char *full_pathname) |
8cee930b SC |
360 | { |
361 | int printed_len = 0; | |
362 | char *s; | |
363 | ||
364 | for (s = to_print; *s; s++) | |
365 | { | |
366 | PUTX (*s); | |
367 | } | |
368 | return printed_len; | |
369 | } | |
370 | ||
371 | /* The user must press "y" or "n". Non-zero return means "y" pressed. | |
372 | Comes from readline/complete.c */ | |
373 | static int | |
d02c80cd | 374 | get_y_or_n (void) |
8cee930b SC |
375 | { |
376 | extern int _rl_abort_internal (); | |
377 | int c; | |
378 | ||
379 | for (;;) | |
380 | { | |
381 | c = rl_read_key (); | |
382 | if (c == 'y' || c == 'Y' || c == ' ') | |
383 | return (1); | |
384 | if (c == 'n' || c == 'N' || c == RUBOUT) | |
385 | return (0); | |
386 | if (c == ABORT_CHAR) | |
387 | _rl_abort_internal (); | |
388 | beep (); | |
389 | } | |
390 | } | |
391 | ||
392 | /* A convenience function for displaying a list of strings in | |
393 | columnar format on readline's output stream. MATCHES is the list | |
394 | of strings, in argv format, LEN is the number of strings in MATCHES, | |
395 | and MAX is the length of the longest string in MATCHES. | |
396 | ||
397 | Comes from readline/complete.c and modified to write in | |
398 | the TUI command window using tui_putc/tui_puts. */ | |
399 | static void | |
d02c80cd | 400 | tui_rl_display_match_list (char **matches, int len, int max) |
8cee930b SC |
401 | { |
402 | typedef int QSFUNC (const void *, const void *); | |
403 | extern int _rl_qsort_string_compare (const void*, const void*); | |
404 | extern int _rl_print_completions_horizontally; | |
405 | ||
406 | int count, limit, printed_len; | |
407 | int i, j, k, l; | |
408 | char *temp; | |
409 | ||
410 | /* Screen dimension correspond to the TUI command window. */ | |
6d012f14 | 411 | int screenwidth = TUI_CMD_WIN->generic.width; |
8cee930b SC |
412 | |
413 | /* If there are many items, then ask the user if she really wants to | |
414 | see them all. */ | |
415 | if (len >= rl_completion_query_items) | |
416 | { | |
417 | char msg[256]; | |
418 | ||
419 | sprintf (msg, "\nDisplay all %d possibilities? (y or n)", len); | |
420 | tui_puts (msg); | |
421 | if (get_y_or_n () == 0) | |
422 | { | |
423 | tui_puts ("\n"); | |
424 | return; | |
425 | } | |
426 | } | |
427 | ||
428 | /* How many items of MAX length can we fit in the screen window? */ | |
429 | max += 2; | |
430 | limit = screenwidth / max; | |
431 | if (limit != 1 && (limit * max == screenwidth)) | |
432 | limit--; | |
433 | ||
434 | /* Avoid a possible floating exception. If max > screenwidth, | |
435 | limit will be 0 and a divide-by-zero fault will result. */ | |
436 | if (limit == 0) | |
437 | limit = 1; | |
438 | ||
439 | /* How many iterations of the printing loop? */ | |
440 | count = (len + (limit - 1)) / limit; | |
441 | ||
442 | /* Watch out for special case. If LEN is less than LIMIT, then | |
443 | just do the inner printing loop. | |
444 | 0 < len <= limit implies count = 1. */ | |
445 | ||
446 | /* Sort the items if they are not already sorted. */ | |
447 | if (rl_ignore_completion_duplicates == 0) | |
448 | qsort (matches + 1, len, sizeof (char *), | |
449 | (QSFUNC *)_rl_qsort_string_compare); | |
450 | ||
451 | tui_putc ('\n'); | |
452 | ||
453 | if (_rl_print_completions_horizontally == 0) | |
454 | { | |
455 | /* Print the sorted items, up-and-down alphabetically, like ls. */ | |
456 | for (i = 1; i <= count; i++) | |
457 | { | |
458 | for (j = 0, l = i; j < limit; j++) | |
459 | { | |
460 | if (l > len || matches[l] == 0) | |
461 | break; | |
462 | else | |
463 | { | |
464 | temp = printable_part (matches[l]); | |
465 | printed_len = print_filename (temp, matches[l]); | |
466 | ||
467 | if (j + 1 < limit) | |
468 | for (k = 0; k < max - printed_len; k++) | |
469 | tui_putc (' '); | |
470 | } | |
471 | l += count; | |
472 | } | |
473 | tui_putc ('\n'); | |
474 | } | |
475 | } | |
476 | else | |
477 | { | |
478 | /* Print the sorted items, across alphabetically, like ls -x. */ | |
479 | for (i = 1; matches[i]; i++) | |
480 | { | |
481 | temp = printable_part (matches[i]); | |
482 | printed_len = print_filename (temp, matches[i]); | |
483 | /* Have we reached the end of this line? */ | |
484 | if (matches[i+1]) | |
485 | { | |
486 | if (i && (limit > 1) && (i % limit) == 0) | |
487 | tui_putc ('\n'); | |
488 | else | |
489 | for (k = 0; k < max - printed_len; k++) | |
490 | tui_putc (' '); | |
491 | } | |
492 | } | |
493 | tui_putc ('\n'); | |
494 | } | |
495 | } | |
a198b876 SC |
496 | |
497 | /* Setup the IO for curses or non-curses mode. | |
498 | - In non-curses mode, readline and gdb use the standard input and | |
499 | standard output/error directly. | |
500 | - In curses mode, the standard output/error is controlled by TUI | |
501 | with the tui_stdout and tui_stderr. The output is redirected in | |
502 | the curses command window. Several readline callbacks are installed | |
503 | so that readline asks for its input to the curses command window | |
504 | with wgetch(). */ | |
505 | void | |
506 | tui_setup_io (int mode) | |
507 | { | |
508 | extern int readline_echoing_p; | |
509 | ||
510 | if (mode) | |
c906108c | 511 | { |
a198b876 SC |
512 | /* Redirect readline to TUI. */ |
513 | tui_old_rl_redisplay_function = rl_redisplay_function; | |
514 | tui_old_rl_deprep_terminal = rl_deprep_term_function; | |
515 | tui_old_rl_prep_terminal = rl_prep_term_function; | |
516 | tui_old_rl_getc_function = rl_getc_function; | |
517 | tui_old_rl_outstream = rl_outstream; | |
518 | tui_old_readline_echoing_p = readline_echoing_p; | |
519 | rl_redisplay_function = tui_redisplay_readline; | |
520 | rl_deprep_term_function = tui_deprep_terminal; | |
521 | rl_prep_term_function = tui_prep_terminal; | |
522 | rl_getc_function = tui_getc; | |
523 | readline_echoing_p = 0; | |
524 | rl_outstream = tui_rl_outstream; | |
525 | rl_prompt = 0; | |
8cee930b SC |
526 | rl_completion_display_matches_hook = tui_rl_display_match_list; |
527 | rl_already_prompted = 0; | |
a198b876 SC |
528 | |
529 | /* Keep track of previous gdb output. */ | |
530 | tui_old_stdout = gdb_stdout; | |
531 | tui_old_stderr = gdb_stderr; | |
532 | tui_old_uiout = uiout; | |
533 | ||
534 | /* Reconfigure gdb output. */ | |
535 | gdb_stdout = tui_stdout; | |
536 | gdb_stderr = tui_stderr; | |
537 | gdb_stdlog = gdb_stdout; /* for moment */ | |
538 | gdb_stdtarg = gdb_stderr; /* for moment */ | |
539 | uiout = tui_out; | |
9d876a16 SC |
540 | |
541 | /* Save tty for SIGCONT. */ | |
542 | savetty (); | |
c906108c | 543 | } |
a198b876 | 544 | else |
c906108c | 545 | { |
a198b876 SC |
546 | /* Restore gdb output. */ |
547 | gdb_stdout = tui_old_stdout; | |
548 | gdb_stderr = tui_old_stderr; | |
549 | gdb_stdlog = gdb_stdout; /* for moment */ | |
550 | gdb_stdtarg = gdb_stderr; /* for moment */ | |
551 | uiout = tui_old_uiout; | |
552 | ||
553 | /* Restore readline. */ | |
554 | rl_redisplay_function = tui_old_rl_redisplay_function; | |
555 | rl_deprep_term_function = tui_old_rl_deprep_terminal; | |
556 | rl_prep_term_function = tui_old_rl_prep_terminal; | |
557 | rl_getc_function = tui_old_rl_getc_function; | |
558 | rl_outstream = tui_old_rl_outstream; | |
8cee930b | 559 | rl_completion_display_matches_hook = 0; |
a198b876 | 560 | readline_echoing_p = tui_old_readline_echoing_p; |
bd9b0abf | 561 | rl_already_prompted = 0; |
9d876a16 SC |
562 | |
563 | /* Save tty for SIGCONT. */ | |
564 | savetty (); | |
565 | } | |
566 | } | |
567 | ||
568 | #ifdef SIGCONT | |
569 | /* Catch SIGCONT to restore the terminal and refresh the screen. */ | |
570 | static void | |
571 | tui_cont_sig (int sig) | |
572 | { | |
573 | if (tui_active) | |
574 | { | |
575 | /* Restore the terminal setting because another process (shell) | |
576 | might have changed it. */ | |
577 | resetty (); | |
578 | ||
579 | /* Force a refresh of the screen. */ | |
a21fcd8f | 580 | tui_refresh_all_win (); |
d75e970c SC |
581 | |
582 | /* Update cursor position on the screen. */ | |
6d012f14 AC |
583 | wmove (TUI_CMD_WIN->generic.handle, |
584 | TUI_CMD_WIN->detail.command_info.start_line, | |
585 | TUI_CMD_WIN->detail.command_info.curch); | |
586 | wrefresh (TUI_CMD_WIN->generic.handle); | |
c906108c | 587 | } |
9d876a16 | 588 | signal (sig, tui_cont_sig); |
a198b876 | 589 | } |
9d876a16 | 590 | #endif |
c906108c | 591 | |
a198b876 SC |
592 | /* Initialize the IO for gdb in curses mode. */ |
593 | void | |
d02c80cd | 594 | tui_initialize_io (void) |
a198b876 | 595 | { |
9d876a16 SC |
596 | #ifdef SIGCONT |
597 | signal (SIGCONT, tui_cont_sig); | |
598 | #endif | |
599 | ||
a198b876 SC |
600 | /* Create tui output streams. */ |
601 | tui_stdout = tui_fileopen (stdout); | |
602 | tui_stderr = tui_fileopen (stderr); | |
603 | tui_out = tui_out_new (tui_stdout); | |
604 | ||
9a4105ab AC |
605 | /* Create the default UI. It is not created because we installed a |
606 | deprecated_init_ui_hook. */ | |
2b68e2c5 | 607 | tui_old_uiout = uiout = cli_out_new (gdb_stdout); |
a198b876 | 608 | |
8cee930b | 609 | #ifdef TUI_USE_PIPE_FOR_READLINE |
a198b876 SC |
610 | /* Temporary solution for readline writing to stdout: |
611 | redirect readline output in a pipe, read that pipe and | |
612 | output the content in the curses command window. */ | |
613 | if (pipe (tui_readline_pipe) != 0) | |
c906108c | 614 | { |
a198b876 SC |
615 | fprintf_unfiltered (gdb_stderr, "Cannot create pipe for readline"); |
616 | exit (1); | |
c906108c | 617 | } |
a198b876 SC |
618 | tui_rl_outstream = fdopen (tui_readline_pipe[1], "w"); |
619 | if (tui_rl_outstream == 0) | |
c906108c | 620 | { |
a198b876 SC |
621 | fprintf_unfiltered (gdb_stderr, "Cannot redirect readline output"); |
622 | exit (1); | |
c906108c | 623 | } |
0f59c96f | 624 | setvbuf (tui_rl_outstream, (char*) NULL, _IOLBF, 0); |
c906108c | 625 | |
a198b876 SC |
626 | #ifdef O_NONBLOCK |
627 | (void) fcntl (tui_readline_pipe[0], F_SETFL, O_NONBLOCK); | |
c906108c | 628 | #else |
a198b876 SC |
629 | #ifdef O_NDELAY |
630 | (void) fcntl (tui_readline_pipe[0], F_SETFL, O_NDELAY); | |
c906108c | 631 | #endif |
a198b876 | 632 | #endif |
a198b876 | 633 | add_file_handler (tui_readline_pipe[0], tui_readline_output, 0); |
8cee930b SC |
634 | #else |
635 | tui_rl_outstream = stdout; | |
636 | #endif | |
a198b876 SC |
637 | } |
638 | ||
639 | /* Get a character from the command window. This is called from the readline | |
640 | package. */ | |
641 | int | |
642 | tui_getc (FILE *fp) | |
643 | { | |
644 | int ch; | |
645 | WINDOW *w; | |
646 | ||
6d012f14 | 647 | w = TUI_CMD_WIN->generic.handle; |
a198b876 | 648 | |
8cee930b | 649 | #ifdef TUI_USE_PIPE_FOR_READLINE |
a198b876 SC |
650 | /* Flush readline output. */ |
651 | tui_readline_output (GDB_READABLE, 0); | |
8cee930b SC |
652 | #endif |
653 | ||
a198b876 | 654 | ch = wgetch (w); |
6ba8e26f | 655 | ch = tui_handle_resize_during_io (ch); |
c906108c | 656 | |
a198b876 SC |
657 | /* The \n must be echoed because it will not be printed by readline. */ |
658 | if (ch == '\n') | |
659 | { | |
660 | /* When hitting return with an empty input, gdb executes the last | |
661 | command. If we emit a newline, this fills up the command window | |
662 | with empty lines with gdb prompt at beginning. Instead of that, | |
663 | stay on the same line but provide a visual effect to show the | |
664 | user we recognized the command. */ | |
665 | if (rl_end == 0) | |
666 | { | |
6d012f14 | 667 | wmove (w, TUI_CMD_WIN->detail.command_info.cur_line, 0); |
a198b876 SC |
668 | |
669 | /* Clear the line. This will blink the gdb prompt since | |
670 | it will be redrawn at the same line. */ | |
671 | wclrtoeol (w); | |
672 | wrefresh (w); | |
673 | napms (20); | |
674 | } | |
675 | else | |
676 | { | |
6d012f14 AC |
677 | wmove (w, TUI_CMD_WIN->detail.command_info.cur_line, |
678 | TUI_CMD_WIN->detail.command_info.curch); | |
a198b876 SC |
679 | waddch (w, ch); |
680 | } | |
681 | } | |
682 | ||
bcdf1568 | 683 | if (key_is_command_char (ch)) |
c906108c | 684 | { /* Handle prev/next/up/down here */ |
b0a30fce | 685 | ch = tui_dispatch_ctrl_char (ch); |
c906108c | 686 | } |
a198b876 | 687 | |
c906108c | 688 | if (ch == '\n' || ch == '\r' || ch == '\f') |
6d012f14 | 689 | TUI_CMD_WIN->detail.command_info.curch = 0; |
a198b876 SC |
690 | if (ch == KEY_BACKSPACE) |
691 | return '\b'; | |
692 | ||
c906108c | 693 | return ch; |
a198b876 | 694 | } |
c906108c | 695 | |
c906108c | 696 | |
a198b876 SC |
697 | /* Cleanup when a resize has occured. |
698 | Returns the character that must be processed. */ | |
c906108c | 699 | static unsigned int |
6ba8e26f | 700 | tui_handle_resize_during_io (unsigned int original_ch) |
c906108c | 701 | { |
dd1abb8c | 702 | if (tui_win_resized ()) |
c906108c | 703 | { |
a21fcd8f | 704 | tui_refresh_all_win (); |
c906108c | 705 | dont_repeat (); |
dd1abb8c | 706 | tui_set_win_resized_to (FALSE); |
c906108c SS |
707 | return '\n'; |
708 | } | |
709 | else | |
6ba8e26f | 710 | return original_ch; |
a198b876 | 711 | } |