Commit | Line | Data |
---|---|---|
f377b406 | 1 | /* TUI support I/O functions. |
f33c6cbf | 2 | |
4c38e0a4 JB |
3 | Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2007, 2008, 2009, |
4 | 2010 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 | |
a9762ec7 | 12 | the Free Software Foundation; either version 3 of the License, or |
f377b406 SC |
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 | |
a9762ec7 | 21 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c | 22 | |
c906108c | 23 | #include "defs.h" |
a198b876 SC |
24 | #include "target.h" |
25 | #include "event-loop.h" | |
e09d2eba | 26 | #include "event-top.h" |
a198b876 SC |
27 | #include "command.h" |
28 | #include "top.h" | |
d7b2e967 AC |
29 | #include "tui/tui.h" |
30 | #include "tui/tui-data.h" | |
31 | #include "tui/tui-io.h" | |
32 | #include "tui/tui-command.h" | |
33 | #include "tui/tui-win.h" | |
34 | #include "tui/tui-wingeneral.h" | |
35 | #include "tui/tui-file.h" | |
a198b876 SC |
36 | #include "ui-out.h" |
37 | #include "cli-out.h" | |
38 | #include <fcntl.h> | |
9d876a16 | 39 | #include <signal.h> |
96ec9981 DJ |
40 | #include <stdio.h> |
41 | ||
6a83354a | 42 | #include "gdb_curses.h" |
a198b876 | 43 | |
4a1bcc8c MK |
44 | /* This redefines CTRL if it is not already defined, so it must come |
45 | after terminal state releated include files like <term.h> and | |
46 | "gdb_curses.h". */ | |
47 | #include "readline/readline.h" | |
48 | ||
bcdf1568 AC |
49 | int |
50 | key_is_start_sequence (int ch) | |
51 | { | |
52 | return (ch == 27); | |
53 | } | |
54 | ||
55 | int | |
56 | key_is_end_sequence (int ch) | |
57 | { | |
58 | return (ch == 126); | |
59 | } | |
60 | ||
61 | int | |
62 | key_is_backspace (int ch) | |
63 | { | |
64 | return (ch == 8); | |
65 | } | |
66 | ||
67 | int | |
68 | key_is_command_char (int ch) | |
69 | { | |
70 | return ((ch == KEY_NPAGE) || (ch == KEY_PPAGE) | |
71 | || (ch == KEY_LEFT) || (ch == KEY_RIGHT) | |
72 | || (ch == KEY_UP) || (ch == KEY_DOWN) | |
73 | || (ch == KEY_SF) || (ch == KEY_SR) | |
e5908723 MS |
74 | || (ch == (int)'\f') |
75 | || key_is_start_sequence (ch)); | |
bcdf1568 AC |
76 | } |
77 | ||
ec6f8892 SC |
78 | /* Use definition from readline 4.3. */ |
79 | #undef CTRL_CHAR | |
08ef48c5 MS |
80 | #define CTRL_CHAR(c) \ |
81 | ((c) < control_character_threshold && (((c) & 0x80) == 0)) | |
ec6f8892 | 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 | ||
1cc6d956 MS |
87 | In curses mode, the gdb outputs are made in a curses command |
88 | window. For this, the gdb_stdout and gdb_stderr are redirected to | |
89 | the specific ui_file implemented by TUI. The output is handled by | |
90 | tui_puts(). The input is also controlled by curses with | |
91 | tui_getc(). The readline library uses this function to get its | |
92 | input. Several readline hooks are installed to redirect readline | |
93 | output to the TUI (see also the note below). | |
a198b876 SC |
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 | ||
1cc6d956 MS |
99 | Note SCz/2001-07-21: the current readline is not clean in its |
100 | management of the output. Even if we install a redisplay handler, | |
101 | it sometimes writes on a stdout file. It is important to redirect | |
102 | every output produced by readline, otherwise the curses window will | |
103 | be garbled. This is implemented with a pipe that TUI reads and | |
104 | readline writes to. A gdb input handler is created so that reading | |
105 | the pipe is handled automatically. This will probably not work on | |
106 | non-Unix platforms. The best fix is to make readline clean enougth | |
107 | so that is never write on stdout. | |
108 | ||
109 | Note SCz/2002-09-01: we now use more readline hooks and it seems | |
110 | that with them we don't need the pipe anymore (verified by creating | |
111 | the pipe and closing its end so that write causes a SIGPIPE). The | |
112 | old pipe code is still there and can be conditionally removed by | |
8cee930b SC |
113 | #undef TUI_USE_PIPE_FOR_READLINE. */ |
114 | ||
115 | /* For gdb 5.3, prefer to continue the pipe hack as a backup wheel. */ | |
a156a290 | 116 | #ifdef HAVE_PIPE |
8cee930b | 117 | #define TUI_USE_PIPE_FOR_READLINE |
a156a290 | 118 | #endif |
1cc6d956 | 119 | /* #undef TUI_USE_PIPE_FOR_READLINE */ |
a198b876 SC |
120 | |
121 | /* TUI output files. */ | |
122 | static struct ui_file *tui_stdout; | |
123 | static struct ui_file *tui_stderr; | |
2b68e2c5 | 124 | struct ui_out *tui_out; |
a198b876 SC |
125 | |
126 | /* GDB output files in non-curses mode. */ | |
127 | static struct ui_file *tui_old_stdout; | |
128 | static struct ui_file *tui_old_stderr; | |
2b68e2c5 | 129 | struct ui_out *tui_old_uiout; |
a198b876 SC |
130 | |
131 | /* Readline previous hooks. */ | |
132 | static Function *tui_old_rl_getc_function; | |
133 | static VFunction *tui_old_rl_redisplay_function; | |
134 | static VFunction *tui_old_rl_prep_terminal; | |
135 | static VFunction *tui_old_rl_deprep_terminal; | |
136 | static int tui_old_readline_echoing_p; | |
137 | ||
138 | /* Readline output stream. | |
139 | Should be removed when readline is clean. */ | |
140 | static FILE *tui_rl_outstream; | |
141 | static FILE *tui_old_rl_outstream; | |
8cee930b | 142 | #ifdef TUI_USE_PIPE_FOR_READLINE |
a198b876 | 143 | static int tui_readline_pipe[2]; |
8cee930b | 144 | #endif |
c906108c | 145 | |
57266a33 SC |
146 | /* The last gdb prompt that was registered in readline. |
147 | This may be the main gdb prompt or a secondary prompt. */ | |
148 | static char *tui_rl_saved_prompt; | |
149 | ||
6ba8e26f | 150 | static unsigned int tui_handle_resize_during_io (unsigned int); |
c906108c | 151 | |
8cee930b SC |
152 | static void |
153 | tui_putc (char c) | |
154 | { | |
155 | char buf[2]; | |
156 | ||
157 | buf[0] = c; | |
158 | buf[1] = 0; | |
159 | tui_puts (buf); | |
160 | } | |
c906108c | 161 | |
a198b876 | 162 | /* Print the string in the curses command window. */ |
c906108c | 163 | void |
a198b876 | 164 | tui_puts (const char *string) |
c906108c | 165 | { |
a198b876 SC |
166 | static int tui_skip_line = -1; |
167 | char c; | |
168 | WINDOW *w; | |
c906108c | 169 | |
6d012f14 | 170 | w = TUI_CMD_WIN->generic.handle; |
a198b876 | 171 | while ((c = *string++) != 0) |
c906108c | 172 | { |
a198b876 SC |
173 | /* Catch annotation and discard them. We need two \032 and |
174 | discard until a \n is seen. */ | |
175 | if (c == '\032') | |
176 | { | |
177 | tui_skip_line++; | |
178 | } | |
179 | else if (tui_skip_line != 1) | |
180 | { | |
181 | tui_skip_line = -1; | |
182 | waddch (w, c); | |
183 | } | |
184 | else if (c == '\n') | |
185 | tui_skip_line = -1; | |
186 | } | |
6d012f14 AC |
187 | getyx (w, TUI_CMD_WIN->detail.command_info.cur_line, |
188 | TUI_CMD_WIN->detail.command_info.curch); | |
189 | TUI_CMD_WIN->detail.command_info.start_line = TUI_CMD_WIN->detail.command_info.cur_line; | |
a198b876 SC |
190 | |
191 | /* We could defer the following. */ | |
192 | wrefresh (w); | |
193 | fflush (stdout); | |
194 | } | |
195 | ||
196 | /* Readline callback. | |
197 | Redisplay the command line with its prompt after readline has | |
198 | changed the edited text. */ | |
e09d2eba | 199 | void |
a198b876 SC |
200 | tui_redisplay_readline (void) |
201 | { | |
202 | int prev_col; | |
203 | int height; | |
204 | int col, line; | |
205 | int c_pos; | |
206 | int c_line; | |
207 | int in; | |
208 | WINDOW *w; | |
209 | char *prompt; | |
210 | int start_line; | |
e3da6fc5 SC |
211 | |
212 | /* Detect when we temporarily left SingleKey and now the readline | |
1cc6d956 MS |
213 | edit buffer is empty, automatically restore the SingleKey |
214 | mode. */ | |
6d012f14 AC |
215 | if (tui_current_key_mode == TUI_ONE_COMMAND_MODE && rl_end == 0) |
216 | tui_set_key_mode (TUI_SINGLE_KEY_MODE); | |
e3da6fc5 | 217 | |
6d012f14 | 218 | if (tui_current_key_mode == TUI_SINGLE_KEY_MODE) |
e09d2eba SC |
219 | prompt = ""; |
220 | else | |
57266a33 | 221 | prompt = tui_rl_saved_prompt; |
a198b876 SC |
222 | |
223 | c_pos = -1; | |
224 | c_line = -1; | |
6d012f14 AC |
225 | w = TUI_CMD_WIN->generic.handle; |
226 | start_line = TUI_CMD_WIN->detail.command_info.start_line; | |
a198b876 SC |
227 | wmove (w, start_line, 0); |
228 | prev_col = 0; | |
229 | height = 1; | |
230 | for (in = 0; prompt && prompt[in]; in++) | |
231 | { | |
232 | waddch (w, prompt[in]); | |
233 | getyx (w, line, col); | |
234 | if (col < prev_col) | |
235 | height++; | |
236 | prev_col = col; | |
237 | } | |
238 | for (in = 0; in < rl_end; in++) | |
239 | { | |
240 | unsigned char c; | |
241 | ||
242 | c = (unsigned char) rl_line_buffer[in]; | |
243 | if (in == rl_point) | |
244 | { | |
245 | getyx (w, c_line, c_pos); | |
246 | } | |
247 | ||
248 | if (CTRL_CHAR (c) || c == RUBOUT) | |
249 | { | |
250 | waddch (w, '^'); | |
251 | waddch (w, CTRL_CHAR (c) ? UNCTRL (c) : '?'); | |
252 | } | |
c906108c SS |
253 | else |
254 | { | |
a198b876 | 255 | waddch (w, c); |
c906108c | 256 | } |
a198b876 SC |
257 | if (c == '\n') |
258 | { | |
6d012f14 AC |
259 | getyx (w, TUI_CMD_WIN->detail.command_info.start_line, |
260 | TUI_CMD_WIN->detail.command_info.curch); | |
a198b876 SC |
261 | } |
262 | getyx (w, line, col); | |
263 | if (col < prev_col) | |
264 | height++; | |
265 | prev_col = col; | |
c906108c | 266 | } |
a198b876 | 267 | wclrtobot (w); |
6d012f14 AC |
268 | getyx (w, TUI_CMD_WIN->detail.command_info.start_line, |
269 | TUI_CMD_WIN->detail.command_info.curch); | |
a198b876 | 270 | if (c_line >= 0) |
d75e970c SC |
271 | { |
272 | wmove (w, c_line, c_pos); | |
6d012f14 AC |
273 | TUI_CMD_WIN->detail.command_info.cur_line = c_line; |
274 | TUI_CMD_WIN->detail.command_info.curch = c_pos; | |
d75e970c | 275 | } |
6d012f14 | 276 | TUI_CMD_WIN->detail.command_info.start_line -= height - 1; |
a198b876 | 277 | |
a198b876 SC |
278 | wrefresh (w); |
279 | fflush(stdout); | |
280 | } | |
281 | ||
1cc6d956 MS |
282 | /* Readline callback to prepare the terminal. It is called once each |
283 | time we enter readline. Terminal is already setup in curses | |
284 | mode. */ | |
a198b876 | 285 | static void |
88fa91b4 | 286 | tui_prep_terminal (int notused1) |
c906108c | 287 | { |
57266a33 SC |
288 | /* Save the prompt registered in readline to correctly display it. |
289 | (we can't use gdb_prompt() due to secondary prompts and can't use | |
290 | rl_prompt because it points to an alloca buffer). */ | |
291 | xfree (tui_rl_saved_prompt); | |
292 | tui_rl_saved_prompt = xstrdup (rl_prompt); | |
a198b876 | 293 | } |
c906108c | 294 | |
1cc6d956 MS |
295 | /* Readline callback to restore the terminal. It is called once each |
296 | time we leave readline. There is nothing to do in curses mode. */ | |
a198b876 SC |
297 | static void |
298 | tui_deprep_terminal (void) | |
299 | { | |
300 | } | |
c906108c | 301 | |
8cee930b | 302 | #ifdef TUI_USE_PIPE_FOR_READLINE |
a198b876 SC |
303 | /* Read readline output pipe and feed the command window with it. |
304 | Should be removed when readline is clean. */ | |
305 | static void | |
01f69b38 | 306 | tui_readline_output (int error, gdb_client_data data) |
a198b876 SC |
307 | { |
308 | int size; | |
309 | char buf[256]; | |
c906108c | 310 | |
a198b876 SC |
311 | size = read (tui_readline_pipe[0], buf, sizeof (buf) - 1); |
312 | if (size > 0 && tui_active) | |
c906108c | 313 | { |
a198b876 SC |
314 | buf[size] = 0; |
315 | tui_puts (buf); | |
c906108c | 316 | } |
a198b876 | 317 | } |
8cee930b SC |
318 | #endif |
319 | ||
320 | /* Return the portion of PATHNAME that should be output when listing | |
321 | possible completions. If we are hacking filename completion, we | |
322 | are only interested in the basename, the portion following the | |
323 | final slash. Otherwise, we return what we were passed. | |
324 | ||
1cc6d956 | 325 | Comes from readline/complete.c. */ |
8cee930b | 326 | static char * |
d02c80cd | 327 | printable_part (char *pathname) |
8cee930b SC |
328 | { |
329 | char *temp; | |
330 | ||
331 | temp = rl_filename_completion_desired ? strrchr (pathname, '/') : (char *)NULL; | |
332 | #if defined (__MSDOS__) | |
e5908723 MS |
333 | if (rl_filename_completion_desired |
334 | && temp == 0 && isalpha (pathname[0]) | |
335 | && pathname[1] == ':') | |
8cee930b SC |
336 | temp = pathname + 1; |
337 | #endif | |
338 | return (temp ? ++temp : pathname); | |
339 | } | |
340 | ||
1cc6d956 MS |
341 | /* Output TO_PRINT to rl_outstream. If VISIBLE_STATS is defined and |
342 | we are using it, check for and output a single character for | |
343 | `special' filenames. Return the number of characters we | |
344 | output. */ | |
8cee930b SC |
345 | |
346 | #define PUTX(c) \ | |
347 | do { \ | |
348 | if (CTRL_CHAR (c)) \ | |
349 | { \ | |
350 | tui_puts ("^"); \ | |
351 | tui_putc (UNCTRL (c)); \ | |
352 | printed_len += 2; \ | |
353 | } \ | |
354 | else if (c == RUBOUT) \ | |
355 | { \ | |
356 | tui_puts ("^?"); \ | |
357 | printed_len += 2; \ | |
358 | } \ | |
359 | else \ | |
360 | { \ | |
361 | tui_putc (c); \ | |
362 | printed_len++; \ | |
363 | } \ | |
364 | } while (0) | |
365 | ||
366 | static int | |
d02c80cd | 367 | print_filename (char *to_print, char *full_pathname) |
8cee930b SC |
368 | { |
369 | int printed_len = 0; | |
370 | char *s; | |
371 | ||
372 | for (s = to_print; *s; s++) | |
373 | { | |
374 | PUTX (*s); | |
375 | } | |
376 | return printed_len; | |
377 | } | |
378 | ||
379 | /* The user must press "y" or "n". Non-zero return means "y" pressed. | |
1cc6d956 | 380 | Comes from readline/complete.c. */ |
8cee930b | 381 | static int |
d02c80cd | 382 | get_y_or_n (void) |
8cee930b SC |
383 | { |
384 | extern int _rl_abort_internal (); | |
385 | int c; | |
386 | ||
387 | for (;;) | |
388 | { | |
389 | c = rl_read_key (); | |
390 | if (c == 'y' || c == 'Y' || c == ' ') | |
391 | return (1); | |
392 | if (c == 'n' || c == 'N' || c == RUBOUT) | |
393 | return (0); | |
394 | if (c == ABORT_CHAR) | |
395 | _rl_abort_internal (); | |
396 | beep (); | |
397 | } | |
398 | } | |
399 | ||
400 | /* A convenience function for displaying a list of strings in | |
401 | columnar format on readline's output stream. MATCHES is the list | |
402 | of strings, in argv format, LEN is the number of strings in MATCHES, | |
403 | and MAX is the length of the longest string in MATCHES. | |
404 | ||
405 | Comes from readline/complete.c and modified to write in | |
406 | the TUI command window using tui_putc/tui_puts. */ | |
407 | static void | |
d02c80cd | 408 | tui_rl_display_match_list (char **matches, int len, int max) |
8cee930b SC |
409 | { |
410 | typedef int QSFUNC (const void *, const void *); | |
08ef48c5 MS |
411 | extern int _rl_qsort_string_compare (const void *, |
412 | const void *); | |
8cee930b SC |
413 | extern int _rl_print_completions_horizontally; |
414 | ||
415 | int count, limit, printed_len; | |
416 | int i, j, k, l; | |
417 | char *temp; | |
418 | ||
419 | /* Screen dimension correspond to the TUI command window. */ | |
6d012f14 | 420 | int screenwidth = TUI_CMD_WIN->generic.width; |
8cee930b SC |
421 | |
422 | /* If there are many items, then ask the user if she really wants to | |
1cc6d956 | 423 | see them all. */ |
8cee930b SC |
424 | if (len >= rl_completion_query_items) |
425 | { | |
426 | char msg[256]; | |
427 | ||
428 | sprintf (msg, "\nDisplay all %d possibilities? (y or n)", len); | |
429 | tui_puts (msg); | |
430 | if (get_y_or_n () == 0) | |
431 | { | |
432 | tui_puts ("\n"); | |
433 | return; | |
434 | } | |
435 | } | |
436 | ||
1cc6d956 | 437 | /* How many items of MAX length can we fit in the screen window? */ |
8cee930b SC |
438 | max += 2; |
439 | limit = screenwidth / max; | |
440 | if (limit != 1 && (limit * max == screenwidth)) | |
441 | limit--; | |
442 | ||
1cc6d956 MS |
443 | /* Avoid a possible floating exception. If max > screenwidth, limit |
444 | will be 0 and a divide-by-zero fault will result. */ | |
8cee930b SC |
445 | if (limit == 0) |
446 | limit = 1; | |
447 | ||
1cc6d956 | 448 | /* How many iterations of the printing loop? */ |
8cee930b SC |
449 | count = (len + (limit - 1)) / limit; |
450 | ||
451 | /* Watch out for special case. If LEN is less than LIMIT, then | |
452 | just do the inner printing loop. | |
1cc6d956 | 453 | 0 < len <= limit implies count = 1. */ |
8cee930b | 454 | |
1cc6d956 | 455 | /* Sort the items if they are not already sorted. */ |
8cee930b SC |
456 | if (rl_ignore_completion_duplicates == 0) |
457 | qsort (matches + 1, len, sizeof (char *), | |
458 | (QSFUNC *)_rl_qsort_string_compare); | |
459 | ||
460 | tui_putc ('\n'); | |
461 | ||
462 | if (_rl_print_completions_horizontally == 0) | |
463 | { | |
1cc6d956 | 464 | /* Print the sorted items, up-and-down alphabetically, like ls. */ |
8cee930b SC |
465 | for (i = 1; i <= count; i++) |
466 | { | |
467 | for (j = 0, l = i; j < limit; j++) | |
468 | { | |
469 | if (l > len || matches[l] == 0) | |
470 | break; | |
471 | else | |
472 | { | |
473 | temp = printable_part (matches[l]); | |
474 | printed_len = print_filename (temp, matches[l]); | |
475 | ||
476 | if (j + 1 < limit) | |
477 | for (k = 0; k < max - printed_len; k++) | |
478 | tui_putc (' '); | |
479 | } | |
480 | l += count; | |
481 | } | |
482 | tui_putc ('\n'); | |
483 | } | |
484 | } | |
485 | else | |
486 | { | |
1cc6d956 | 487 | /* Print the sorted items, across alphabetically, like ls -x. */ |
8cee930b SC |
488 | for (i = 1; matches[i]; i++) |
489 | { | |
490 | temp = printable_part (matches[i]); | |
491 | printed_len = print_filename (temp, matches[i]); | |
1cc6d956 | 492 | /* Have we reached the end of this line? */ |
8cee930b SC |
493 | if (matches[i+1]) |
494 | { | |
495 | if (i && (limit > 1) && (i % limit) == 0) | |
496 | tui_putc ('\n'); | |
497 | else | |
498 | for (k = 0; k < max - printed_len; k++) | |
499 | tui_putc (' '); | |
500 | } | |
501 | } | |
502 | tui_putc ('\n'); | |
503 | } | |
504 | } | |
a198b876 SC |
505 | |
506 | /* Setup the IO for curses or non-curses mode. | |
507 | - In non-curses mode, readline and gdb use the standard input and | |
508 | standard output/error directly. | |
509 | - In curses mode, the standard output/error is controlled by TUI | |
510 | with the tui_stdout and tui_stderr. The output is redirected in | |
511 | the curses command window. Several readline callbacks are installed | |
512 | so that readline asks for its input to the curses command window | |
513 | with wgetch(). */ | |
514 | void | |
515 | tui_setup_io (int mode) | |
516 | { | |
517 | extern int readline_echoing_p; | |
518 | ||
519 | if (mode) | |
c906108c | 520 | { |
a198b876 SC |
521 | /* Redirect readline to TUI. */ |
522 | tui_old_rl_redisplay_function = rl_redisplay_function; | |
523 | tui_old_rl_deprep_terminal = rl_deprep_term_function; | |
524 | tui_old_rl_prep_terminal = rl_prep_term_function; | |
525 | tui_old_rl_getc_function = rl_getc_function; | |
526 | tui_old_rl_outstream = rl_outstream; | |
527 | tui_old_readline_echoing_p = readline_echoing_p; | |
528 | rl_redisplay_function = tui_redisplay_readline; | |
529 | rl_deprep_term_function = tui_deprep_terminal; | |
530 | rl_prep_term_function = tui_prep_terminal; | |
531 | rl_getc_function = tui_getc; | |
532 | readline_echoing_p = 0; | |
533 | rl_outstream = tui_rl_outstream; | |
534 | rl_prompt = 0; | |
8cee930b SC |
535 | rl_completion_display_matches_hook = tui_rl_display_match_list; |
536 | rl_already_prompted = 0; | |
a198b876 SC |
537 | |
538 | /* Keep track of previous gdb output. */ | |
539 | tui_old_stdout = gdb_stdout; | |
540 | tui_old_stderr = gdb_stderr; | |
541 | tui_old_uiout = uiout; | |
542 | ||
543 | /* Reconfigure gdb output. */ | |
544 | gdb_stdout = tui_stdout; | |
545 | gdb_stderr = tui_stderr; | |
546 | gdb_stdlog = gdb_stdout; /* for moment */ | |
547 | gdb_stdtarg = gdb_stderr; /* for moment */ | |
548 | uiout = tui_out; | |
9d876a16 SC |
549 | |
550 | /* Save tty for SIGCONT. */ | |
551 | savetty (); | |
c906108c | 552 | } |
a198b876 | 553 | else |
c906108c | 554 | { |
a198b876 SC |
555 | /* Restore gdb output. */ |
556 | gdb_stdout = tui_old_stdout; | |
557 | gdb_stderr = tui_old_stderr; | |
558 | gdb_stdlog = gdb_stdout; /* for moment */ | |
559 | gdb_stdtarg = gdb_stderr; /* for moment */ | |
560 | uiout = tui_old_uiout; | |
561 | ||
562 | /* Restore readline. */ | |
563 | rl_redisplay_function = tui_old_rl_redisplay_function; | |
564 | rl_deprep_term_function = tui_old_rl_deprep_terminal; | |
565 | rl_prep_term_function = tui_old_rl_prep_terminal; | |
566 | rl_getc_function = tui_old_rl_getc_function; | |
567 | rl_outstream = tui_old_rl_outstream; | |
8cee930b | 568 | rl_completion_display_matches_hook = 0; |
a198b876 | 569 | readline_echoing_p = tui_old_readline_echoing_p; |
bd9b0abf | 570 | rl_already_prompted = 0; |
9d876a16 SC |
571 | |
572 | /* Save tty for SIGCONT. */ | |
573 | savetty (); | |
574 | } | |
575 | } | |
576 | ||
577 | #ifdef SIGCONT | |
578 | /* Catch SIGCONT to restore the terminal and refresh the screen. */ | |
579 | static void | |
580 | tui_cont_sig (int sig) | |
581 | { | |
582 | if (tui_active) | |
583 | { | |
584 | /* Restore the terminal setting because another process (shell) | |
585 | might have changed it. */ | |
586 | resetty (); | |
587 | ||
588 | /* Force a refresh of the screen. */ | |
a21fcd8f | 589 | tui_refresh_all_win (); |
d75e970c SC |
590 | |
591 | /* Update cursor position on the screen. */ | |
6d012f14 AC |
592 | wmove (TUI_CMD_WIN->generic.handle, |
593 | TUI_CMD_WIN->detail.command_info.start_line, | |
594 | TUI_CMD_WIN->detail.command_info.curch); | |
595 | wrefresh (TUI_CMD_WIN->generic.handle); | |
c906108c | 596 | } |
9d876a16 | 597 | signal (sig, tui_cont_sig); |
a198b876 | 598 | } |
9d876a16 | 599 | #endif |
c906108c | 600 | |
a198b876 SC |
601 | /* Initialize the IO for gdb in curses mode. */ |
602 | void | |
d02c80cd | 603 | tui_initialize_io (void) |
a198b876 | 604 | { |
9d876a16 SC |
605 | #ifdef SIGCONT |
606 | signal (SIGCONT, tui_cont_sig); | |
607 | #endif | |
608 | ||
a198b876 SC |
609 | /* Create tui output streams. */ |
610 | tui_stdout = tui_fileopen (stdout); | |
611 | tui_stderr = tui_fileopen (stderr); | |
612 | tui_out = tui_out_new (tui_stdout); | |
613 | ||
9a4105ab AC |
614 | /* Create the default UI. It is not created because we installed a |
615 | deprecated_init_ui_hook. */ | |
2b68e2c5 | 616 | tui_old_uiout = uiout = cli_out_new (gdb_stdout); |
a198b876 | 617 | |
8cee930b | 618 | #ifdef TUI_USE_PIPE_FOR_READLINE |
1cc6d956 MS |
619 | /* Temporary solution for readline writing to stdout: redirect |
620 | readline output in a pipe, read that pipe and output the content | |
621 | in the curses command window. */ | |
a198b876 | 622 | if (pipe (tui_readline_pipe) != 0) |
c906108c | 623 | { |
a198b876 SC |
624 | fprintf_unfiltered (gdb_stderr, "Cannot create pipe for readline"); |
625 | exit (1); | |
c906108c | 626 | } |
a198b876 SC |
627 | tui_rl_outstream = fdopen (tui_readline_pipe[1], "w"); |
628 | if (tui_rl_outstream == 0) | |
c906108c | 629 | { |
a198b876 SC |
630 | fprintf_unfiltered (gdb_stderr, "Cannot redirect readline output"); |
631 | exit (1); | |
c906108c | 632 | } |
0f59c96f | 633 | setvbuf (tui_rl_outstream, (char*) NULL, _IOLBF, 0); |
c906108c | 634 | |
a198b876 SC |
635 | #ifdef O_NONBLOCK |
636 | (void) fcntl (tui_readline_pipe[0], F_SETFL, O_NONBLOCK); | |
c906108c | 637 | #else |
a198b876 SC |
638 | #ifdef O_NDELAY |
639 | (void) fcntl (tui_readline_pipe[0], F_SETFL, O_NDELAY); | |
c906108c | 640 | #endif |
a198b876 | 641 | #endif |
a198b876 | 642 | add_file_handler (tui_readline_pipe[0], tui_readline_output, 0); |
8cee930b SC |
643 | #else |
644 | tui_rl_outstream = stdout; | |
645 | #endif | |
a198b876 SC |
646 | } |
647 | ||
1cc6d956 MS |
648 | /* Get a character from the command window. This is called from the |
649 | readline package. */ | |
a198b876 SC |
650 | int |
651 | tui_getc (FILE *fp) | |
652 | { | |
653 | int ch; | |
654 | WINDOW *w; | |
655 | ||
6d012f14 | 656 | w = TUI_CMD_WIN->generic.handle; |
a198b876 | 657 | |
8cee930b | 658 | #ifdef TUI_USE_PIPE_FOR_READLINE |
a198b876 | 659 | /* Flush readline output. */ |
01f69b38 | 660 | tui_readline_output (0, 0); |
8cee930b SC |
661 | #endif |
662 | ||
a198b876 | 663 | ch = wgetch (w); |
6ba8e26f | 664 | ch = tui_handle_resize_during_io (ch); |
c906108c | 665 | |
1cc6d956 MS |
666 | /* The \n must be echoed because it will not be printed by |
667 | readline. */ | |
a198b876 SC |
668 | if (ch == '\n') |
669 | { | |
670 | /* When hitting return with an empty input, gdb executes the last | |
671 | command. If we emit a newline, this fills up the command window | |
672 | with empty lines with gdb prompt at beginning. Instead of that, | |
673 | stay on the same line but provide a visual effect to show the | |
674 | user we recognized the command. */ | |
675 | if (rl_end == 0) | |
676 | { | |
6d012f14 | 677 | wmove (w, TUI_CMD_WIN->detail.command_info.cur_line, 0); |
a198b876 SC |
678 | |
679 | /* Clear the line. This will blink the gdb prompt since | |
680 | it will be redrawn at the same line. */ | |
681 | wclrtoeol (w); | |
682 | wrefresh (w); | |
683 | napms (20); | |
684 | } | |
685 | else | |
686 | { | |
6d012f14 AC |
687 | wmove (w, TUI_CMD_WIN->detail.command_info.cur_line, |
688 | TUI_CMD_WIN->detail.command_info.curch); | |
a198b876 SC |
689 | waddch (w, ch); |
690 | } | |
691 | } | |
692 | ||
bcdf1568 | 693 | if (key_is_command_char (ch)) |
1cc6d956 | 694 | { /* Handle prev/next/up/down here. */ |
b0a30fce | 695 | ch = tui_dispatch_ctrl_char (ch); |
c906108c | 696 | } |
a198b876 | 697 | |
c906108c | 698 | if (ch == '\n' || ch == '\r' || ch == '\f') |
6d012f14 | 699 | TUI_CMD_WIN->detail.command_info.curch = 0; |
a198b876 SC |
700 | if (ch == KEY_BACKSPACE) |
701 | return '\b'; | |
702 | ||
c906108c | 703 | return ch; |
a198b876 | 704 | } |
c906108c | 705 | |
c906108c | 706 | |
a198b876 SC |
707 | /* Cleanup when a resize has occured. |
708 | Returns the character that must be processed. */ | |
c906108c | 709 | static unsigned int |
6ba8e26f | 710 | tui_handle_resize_during_io (unsigned int original_ch) |
c906108c | 711 | { |
dd1abb8c | 712 | if (tui_win_resized ()) |
c906108c | 713 | { |
a21fcd8f | 714 | tui_refresh_all_win (); |
c906108c | 715 | dont_repeat (); |
dd1abb8c | 716 | tui_set_win_resized_to (FALSE); |
c906108c SS |
717 | return '\n'; |
718 | } | |
719 | else | |
6ba8e26f | 720 | return original_ch; |
a198b876 | 721 | } |