Commit | Line | Data |
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f377b406 | 1 | /* TUI support I/O functions. |
f33c6cbf AC |
2 | |
3 | Copyright 1998, 1999, 2000, 2001, 2002 Free Software Foundation, | |
4 | Inc. | |
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 | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c | 24 | |
f33c6cbf AC |
25 | /* FIXME: cagney/2002-02-28: The GDB coding standard indicates that |
26 | "defs.h" should be included first. Unfortunatly some systems | |
27 | (currently Debian GNU/Linux) include the <stdbool.h> via <curses.h> | |
28 | and they clash with "bfd.h"'s definiton of true/false. The correct | |
29 | fix is to remove true/false from "bfd.h", however, until that | |
30 | happens, hack around it by including "config.h" and <curses.h> | |
31 | first. */ | |
32 | ||
4e8f7a8b DJ |
33 | #include "config.h" |
34 | #ifdef HAVE_NCURSES_H | |
35 | #include <ncurses.h> | |
36 | #else | |
37 | #ifdef HAVE_CURSES_H | |
38 | #include <curses.h> | |
39 | #endif | |
40 | #endif | |
41 | ||
c906108c SS |
42 | #include <stdio.h> |
43 | #include "defs.h" | |
44 | #include "terminal.h" | |
a198b876 SC |
45 | #include "target.h" |
46 | #include "event-loop.h" | |
e09d2eba | 47 | #include "event-top.h" |
a198b876 SC |
48 | #include "command.h" |
49 | #include "top.h" | |
50 | #include "readline/readline.h" | |
c906108c SS |
51 | #include "tui.h" |
52 | #include "tuiData.h" | |
53 | #include "tuiIO.h" | |
54 | #include "tuiCommand.h" | |
55 | #include "tuiWin.h" | |
a198b876 SC |
56 | #include "tuiGeneralWin.h" |
57 | #include "tui-file.h" | |
58 | #include "ui-out.h" | |
59 | #include "cli-out.h" | |
60 | #include <fcntl.h> | |
9d876a16 | 61 | #include <signal.h> |
a198b876 | 62 | |
ec6f8892 SC |
63 | /* Use definition from readline 4.3. */ |
64 | #undef CTRL_CHAR | |
65 | #define CTRL_CHAR(c) ((c) < control_character_threshold && (((c) & 0x80) == 0)) | |
66 | ||
a198b876 SC |
67 | /* This file controls the IO interactions between gdb and curses. |
68 | When the TUI is enabled, gdb has two modes a curses and a standard | |
69 | mode. | |
70 | ||
71 | In curses mode, the gdb outputs are made in a curses command window. | |
72 | For this, the gdb_stdout and gdb_stderr are redirected to the specific | |
73 | ui_file implemented by TUI. The output is handled by tui_puts(). | |
74 | The input is also controlled by curses with tui_getc(). The readline | |
75 | library uses this function to get its input. Several readline hooks | |
76 | are installed to redirect readline output to the TUI (see also the | |
77 | note below). | |
78 | ||
79 | In normal mode, the gdb outputs are restored to their origin, that | |
80 | is as if TUI is not used. Readline also uses its original getc() | |
81 | function with stdin. | |
82 | ||
8cee930b SC |
83 | Note SCz/2001-07-21: the current readline is not clean in its management of |
84 | the output. Even if we install a redisplay handler, it sometimes writes on | |
85 | a stdout file. It is important to redirect every output produced by | |
86 | readline, otherwise the curses window will be garbled. This is implemented | |
87 | with a pipe that TUI reads and readline writes to. A gdb input handler | |
a198b876 SC |
88 | is created so that reading the pipe is handled automatically. |
89 | This will probably not work on non-Unix platforms. The best fix is | |
8cee930b SC |
90 | to make readline clean enougth so that is never write on stdout. |
91 | ||
92 | Note SCz/2002-09-01: we now use more readline hooks and it seems that | |
93 | with them we don't need the pipe anymore (verified by creating the pipe | |
94 | and closing its end so that write causes a SIGPIPE). The old pipe code | |
95 | is still there and can be conditionally removed by | |
96 | #undef TUI_USE_PIPE_FOR_READLINE. */ | |
97 | ||
98 | /* For gdb 5.3, prefer to continue the pipe hack as a backup wheel. */ | |
99 | #define TUI_USE_PIPE_FOR_READLINE | |
100 | /*#undef TUI_USE_PIPE_FOR_READLINE*/ | |
a198b876 SC |
101 | |
102 | /* TUI output files. */ | |
103 | static struct ui_file *tui_stdout; | |
104 | static struct ui_file *tui_stderr; | |
2b68e2c5 | 105 | struct ui_out *tui_out; |
a198b876 SC |
106 | |
107 | /* GDB output files in non-curses mode. */ | |
108 | static struct ui_file *tui_old_stdout; | |
109 | static struct ui_file *tui_old_stderr; | |
2b68e2c5 | 110 | struct ui_out *tui_old_uiout; |
a198b876 SC |
111 | |
112 | /* Readline previous hooks. */ | |
113 | static Function *tui_old_rl_getc_function; | |
114 | static VFunction *tui_old_rl_redisplay_function; | |
115 | static VFunction *tui_old_rl_prep_terminal; | |
116 | static VFunction *tui_old_rl_deprep_terminal; | |
117 | static int tui_old_readline_echoing_p; | |
118 | ||
119 | /* Readline output stream. | |
120 | Should be removed when readline is clean. */ | |
121 | static FILE *tui_rl_outstream; | |
122 | static FILE *tui_old_rl_outstream; | |
8cee930b | 123 | #ifdef TUI_USE_PIPE_FOR_READLINE |
a198b876 | 124 | static int tui_readline_pipe[2]; |
8cee930b | 125 | #endif |
c906108c | 126 | |
57266a33 SC |
127 | /* The last gdb prompt that was registered in readline. |
128 | This may be the main gdb prompt or a secondary prompt. */ | |
129 | static char *tui_rl_saved_prompt; | |
130 | ||
a14ed312 | 131 | static unsigned int _tuiHandleResizeDuringIO (unsigned int); |
c906108c | 132 | |
8cee930b SC |
133 | static void |
134 | tui_putc (char c) | |
135 | { | |
136 | char buf[2]; | |
137 | ||
138 | buf[0] = c; | |
139 | buf[1] = 0; | |
140 | tui_puts (buf); | |
141 | } | |
c906108c | 142 | |
a198b876 | 143 | /* Print the string in the curses command window. */ |
c906108c | 144 | void |
a198b876 | 145 | tui_puts (const char *string) |
c906108c | 146 | { |
a198b876 SC |
147 | static int tui_skip_line = -1; |
148 | char c; | |
149 | WINDOW *w; | |
c906108c | 150 | |
a198b876 SC |
151 | w = cmdWin->generic.handle; |
152 | while ((c = *string++) != 0) | |
c906108c | 153 | { |
a198b876 SC |
154 | /* Catch annotation and discard them. We need two \032 and |
155 | discard until a \n is seen. */ | |
156 | if (c == '\032') | |
157 | { | |
158 | tui_skip_line++; | |
159 | } | |
160 | else if (tui_skip_line != 1) | |
161 | { | |
162 | tui_skip_line = -1; | |
163 | waddch (w, c); | |
164 | } | |
165 | else if (c == '\n') | |
166 | tui_skip_line = -1; | |
167 | } | |
168 | getyx (w, cmdWin->detail.commandInfo.curLine, | |
169 | cmdWin->detail.commandInfo.curch); | |
d75e970c | 170 | cmdWin->detail.commandInfo.start_line = cmdWin->detail.commandInfo.curLine; |
a198b876 SC |
171 | |
172 | /* We could defer the following. */ | |
173 | wrefresh (w); | |
174 | fflush (stdout); | |
175 | } | |
176 | ||
177 | /* Readline callback. | |
178 | Redisplay the command line with its prompt after readline has | |
179 | changed the edited text. */ | |
e09d2eba | 180 | void |
a198b876 SC |
181 | tui_redisplay_readline (void) |
182 | { | |
183 | int prev_col; | |
184 | int height; | |
185 | int col, line; | |
186 | int c_pos; | |
187 | int c_line; | |
188 | int in; | |
189 | WINDOW *w; | |
190 | char *prompt; | |
191 | int start_line; | |
e3da6fc5 SC |
192 | |
193 | /* Detect when we temporarily left SingleKey and now the readline | |
194 | edit buffer is empty, automatically restore the SingleKey mode. */ | |
195 | if (tui_current_key_mode == tui_one_command_mode && rl_end == 0) | |
196 | tui_set_key_mode (tui_single_key_mode); | |
197 | ||
e09d2eba SC |
198 | if (tui_current_key_mode == tui_single_key_mode) |
199 | prompt = ""; | |
200 | else | |
57266a33 | 201 | prompt = tui_rl_saved_prompt; |
a198b876 SC |
202 | |
203 | c_pos = -1; | |
204 | c_line = -1; | |
205 | w = cmdWin->generic.handle; | |
d75e970c | 206 | start_line = cmdWin->detail.commandInfo.start_line; |
a198b876 SC |
207 | wmove (w, start_line, 0); |
208 | prev_col = 0; | |
209 | height = 1; | |
210 | for (in = 0; prompt && prompt[in]; in++) | |
211 | { | |
212 | waddch (w, prompt[in]); | |
213 | getyx (w, line, col); | |
214 | if (col < prev_col) | |
215 | height++; | |
216 | prev_col = col; | |
217 | } | |
218 | for (in = 0; in < rl_end; in++) | |
219 | { | |
220 | unsigned char c; | |
221 | ||
222 | c = (unsigned char) rl_line_buffer[in]; | |
223 | if (in == rl_point) | |
224 | { | |
225 | getyx (w, c_line, c_pos); | |
226 | } | |
227 | ||
228 | if (CTRL_CHAR (c) || c == RUBOUT) | |
229 | { | |
230 | waddch (w, '^'); | |
231 | waddch (w, CTRL_CHAR (c) ? UNCTRL (c) : '?'); | |
232 | } | |
c906108c SS |
233 | else |
234 | { | |
a198b876 | 235 | waddch (w, c); |
c906108c | 236 | } |
a198b876 SC |
237 | if (c == '\n') |
238 | { | |
d75e970c | 239 | getyx (w, cmdWin->detail.commandInfo.start_line, |
a198b876 SC |
240 | cmdWin->detail.commandInfo.curch); |
241 | } | |
242 | getyx (w, line, col); | |
243 | if (col < prev_col) | |
244 | height++; | |
245 | prev_col = col; | |
c906108c | 246 | } |
a198b876 | 247 | wclrtobot (w); |
d75e970c | 248 | getyx (w, cmdWin->detail.commandInfo.start_line, |
a198b876 SC |
249 | cmdWin->detail.commandInfo.curch); |
250 | if (c_line >= 0) | |
d75e970c SC |
251 | { |
252 | wmove (w, c_line, c_pos); | |
253 | cmdWin->detail.commandInfo.curLine = c_line; | |
254 | cmdWin->detail.commandInfo.curch = c_pos; | |
255 | } | |
256 | cmdWin->detail.commandInfo.start_line -= height - 1; | |
a198b876 | 257 | |
a198b876 SC |
258 | wrefresh (w); |
259 | fflush(stdout); | |
260 | } | |
261 | ||
262 | /* Readline callback to prepare the terminal. It is called once | |
57266a33 | 263 | each time we enter readline. Terminal is already setup in curses mode. */ |
a198b876 SC |
264 | static void |
265 | tui_prep_terminal (void) | |
c906108c | 266 | { |
57266a33 SC |
267 | /* Save the prompt registered in readline to correctly display it. |
268 | (we can't use gdb_prompt() due to secondary prompts and can't use | |
269 | rl_prompt because it points to an alloca buffer). */ | |
270 | xfree (tui_rl_saved_prompt); | |
271 | tui_rl_saved_prompt = xstrdup (rl_prompt); | |
a198b876 | 272 | } |
c906108c | 273 | |
a198b876 SC |
274 | /* Readline callback to restore the terminal. It is called once |
275 | each time we leave readline. There is nothing to do in curses mode. */ | |
276 | static void | |
277 | tui_deprep_terminal (void) | |
278 | { | |
279 | } | |
c906108c | 280 | |
8cee930b | 281 | #ifdef TUI_USE_PIPE_FOR_READLINE |
a198b876 SC |
282 | /* Read readline output pipe and feed the command window with it. |
283 | Should be removed when readline is clean. */ | |
284 | static void | |
285 | tui_readline_output (int code, gdb_client_data data) | |
286 | { | |
287 | int size; | |
288 | char buf[256]; | |
c906108c | 289 | |
a198b876 SC |
290 | size = read (tui_readline_pipe[0], buf, sizeof (buf) - 1); |
291 | if (size > 0 && tui_active) | |
c906108c | 292 | { |
a198b876 SC |
293 | buf[size] = 0; |
294 | tui_puts (buf); | |
c906108c | 295 | } |
a198b876 | 296 | } |
8cee930b SC |
297 | #endif |
298 | ||
299 | /* Return the portion of PATHNAME that should be output when listing | |
300 | possible completions. If we are hacking filename completion, we | |
301 | are only interested in the basename, the portion following the | |
302 | final slash. Otherwise, we return what we were passed. | |
303 | ||
304 | Comes from readline/complete.c */ | |
305 | static char * | |
306 | printable_part (pathname) | |
307 | char *pathname; | |
308 | { | |
309 | char *temp; | |
310 | ||
311 | temp = rl_filename_completion_desired ? strrchr (pathname, '/') : (char *)NULL; | |
312 | #if defined (__MSDOS__) | |
313 | if (rl_filename_completion_desired && temp == 0 && isalpha (pathname[0]) && pathname[1] == ':') | |
314 | temp = pathname + 1; | |
315 | #endif | |
316 | return (temp ? ++temp : pathname); | |
317 | } | |
318 | ||
319 | /* Output TO_PRINT to rl_outstream. If VISIBLE_STATS is defined and we | |
320 | are using it, check for and output a single character for `special' | |
321 | filenames. Return the number of characters we output. */ | |
322 | ||
323 | #define PUTX(c) \ | |
324 | do { \ | |
325 | if (CTRL_CHAR (c)) \ | |
326 | { \ | |
327 | tui_puts ("^"); \ | |
328 | tui_putc (UNCTRL (c)); \ | |
329 | printed_len += 2; \ | |
330 | } \ | |
331 | else if (c == RUBOUT) \ | |
332 | { \ | |
333 | tui_puts ("^?"); \ | |
334 | printed_len += 2; \ | |
335 | } \ | |
336 | else \ | |
337 | { \ | |
338 | tui_putc (c); \ | |
339 | printed_len++; \ | |
340 | } \ | |
341 | } while (0) | |
342 | ||
343 | static int | |
344 | print_filename (to_print, full_pathname) | |
345 | char *to_print, *full_pathname; | |
346 | { | |
347 | int printed_len = 0; | |
348 | char *s; | |
349 | ||
350 | for (s = to_print; *s; s++) | |
351 | { | |
352 | PUTX (*s); | |
353 | } | |
354 | return printed_len; | |
355 | } | |
356 | ||
357 | /* The user must press "y" or "n". Non-zero return means "y" pressed. | |
358 | Comes from readline/complete.c */ | |
359 | static int | |
360 | get_y_or_n () | |
361 | { | |
362 | extern int _rl_abort_internal (); | |
363 | int c; | |
364 | ||
365 | for (;;) | |
366 | { | |
367 | c = rl_read_key (); | |
368 | if (c == 'y' || c == 'Y' || c == ' ') | |
369 | return (1); | |
370 | if (c == 'n' || c == 'N' || c == RUBOUT) | |
371 | return (0); | |
372 | if (c == ABORT_CHAR) | |
373 | _rl_abort_internal (); | |
374 | beep (); | |
375 | } | |
376 | } | |
377 | ||
378 | /* A convenience function for displaying a list of strings in | |
379 | columnar format on readline's output stream. MATCHES is the list | |
380 | of strings, in argv format, LEN is the number of strings in MATCHES, | |
381 | and MAX is the length of the longest string in MATCHES. | |
382 | ||
383 | Comes from readline/complete.c and modified to write in | |
384 | the TUI command window using tui_putc/tui_puts. */ | |
385 | static void | |
386 | tui_rl_display_match_list (matches, len, max) | |
387 | char **matches; | |
388 | int len, max; | |
389 | { | |
390 | typedef int QSFUNC (const void *, const void *); | |
391 | extern int _rl_qsort_string_compare (const void*, const void*); | |
392 | extern int _rl_print_completions_horizontally; | |
393 | ||
394 | int count, limit, printed_len; | |
395 | int i, j, k, l; | |
396 | char *temp; | |
397 | ||
398 | /* Screen dimension correspond to the TUI command window. */ | |
399 | int screenwidth = cmdWin->generic.width; | |
400 | ||
401 | /* If there are many items, then ask the user if she really wants to | |
402 | see them all. */ | |
403 | if (len >= rl_completion_query_items) | |
404 | { | |
405 | char msg[256]; | |
406 | ||
407 | sprintf (msg, "\nDisplay all %d possibilities? (y or n)", len); | |
408 | tui_puts (msg); | |
409 | if (get_y_or_n () == 0) | |
410 | { | |
411 | tui_puts ("\n"); | |
412 | return; | |
413 | } | |
414 | } | |
415 | ||
416 | /* How many items of MAX length can we fit in the screen window? */ | |
417 | max += 2; | |
418 | limit = screenwidth / max; | |
419 | if (limit != 1 && (limit * max == screenwidth)) | |
420 | limit--; | |
421 | ||
422 | /* Avoid a possible floating exception. If max > screenwidth, | |
423 | limit will be 0 and a divide-by-zero fault will result. */ | |
424 | if (limit == 0) | |
425 | limit = 1; | |
426 | ||
427 | /* How many iterations of the printing loop? */ | |
428 | count = (len + (limit - 1)) / limit; | |
429 | ||
430 | /* Watch out for special case. If LEN is less than LIMIT, then | |
431 | just do the inner printing loop. | |
432 | 0 < len <= limit implies count = 1. */ | |
433 | ||
434 | /* Sort the items if they are not already sorted. */ | |
435 | if (rl_ignore_completion_duplicates == 0) | |
436 | qsort (matches + 1, len, sizeof (char *), | |
437 | (QSFUNC *)_rl_qsort_string_compare); | |
438 | ||
439 | tui_putc ('\n'); | |
440 | ||
441 | if (_rl_print_completions_horizontally == 0) | |
442 | { | |
443 | /* Print the sorted items, up-and-down alphabetically, like ls. */ | |
444 | for (i = 1; i <= count; i++) | |
445 | { | |
446 | for (j = 0, l = i; j < limit; j++) | |
447 | { | |
448 | if (l > len || matches[l] == 0) | |
449 | break; | |
450 | else | |
451 | { | |
452 | temp = printable_part (matches[l]); | |
453 | printed_len = print_filename (temp, matches[l]); | |
454 | ||
455 | if (j + 1 < limit) | |
456 | for (k = 0; k < max - printed_len; k++) | |
457 | tui_putc (' '); | |
458 | } | |
459 | l += count; | |
460 | } | |
461 | tui_putc ('\n'); | |
462 | } | |
463 | } | |
464 | else | |
465 | { | |
466 | /* Print the sorted items, across alphabetically, like ls -x. */ | |
467 | for (i = 1; matches[i]; i++) | |
468 | { | |
469 | temp = printable_part (matches[i]); | |
470 | printed_len = print_filename (temp, matches[i]); | |
471 | /* Have we reached the end of this line? */ | |
472 | if (matches[i+1]) | |
473 | { | |
474 | if (i && (limit > 1) && (i % limit) == 0) | |
475 | tui_putc ('\n'); | |
476 | else | |
477 | for (k = 0; k < max - printed_len; k++) | |
478 | tui_putc (' '); | |
479 | } | |
480 | } | |
481 | tui_putc ('\n'); | |
482 | } | |
483 | } | |
a198b876 SC |
484 | |
485 | /* Setup the IO for curses or non-curses mode. | |
486 | - In non-curses mode, readline and gdb use the standard input and | |
487 | standard output/error directly. | |
488 | - In curses mode, the standard output/error is controlled by TUI | |
489 | with the tui_stdout and tui_stderr. The output is redirected in | |
490 | the curses command window. Several readline callbacks are installed | |
491 | so that readline asks for its input to the curses command window | |
492 | with wgetch(). */ | |
493 | void | |
494 | tui_setup_io (int mode) | |
495 | { | |
496 | extern int readline_echoing_p; | |
497 | ||
498 | if (mode) | |
c906108c | 499 | { |
a198b876 SC |
500 | /* Redirect readline to TUI. */ |
501 | tui_old_rl_redisplay_function = rl_redisplay_function; | |
502 | tui_old_rl_deprep_terminal = rl_deprep_term_function; | |
503 | tui_old_rl_prep_terminal = rl_prep_term_function; | |
504 | tui_old_rl_getc_function = rl_getc_function; | |
505 | tui_old_rl_outstream = rl_outstream; | |
506 | tui_old_readline_echoing_p = readline_echoing_p; | |
507 | rl_redisplay_function = tui_redisplay_readline; | |
508 | rl_deprep_term_function = tui_deprep_terminal; | |
509 | rl_prep_term_function = tui_prep_terminal; | |
510 | rl_getc_function = tui_getc; | |
511 | readline_echoing_p = 0; | |
512 | rl_outstream = tui_rl_outstream; | |
513 | rl_prompt = 0; | |
8cee930b SC |
514 | rl_completion_display_matches_hook = tui_rl_display_match_list; |
515 | rl_already_prompted = 0; | |
a198b876 SC |
516 | |
517 | /* Keep track of previous gdb output. */ | |
518 | tui_old_stdout = gdb_stdout; | |
519 | tui_old_stderr = gdb_stderr; | |
520 | tui_old_uiout = uiout; | |
521 | ||
522 | /* Reconfigure gdb output. */ | |
523 | gdb_stdout = tui_stdout; | |
524 | gdb_stderr = tui_stderr; | |
525 | gdb_stdlog = gdb_stdout; /* for moment */ | |
526 | gdb_stdtarg = gdb_stderr; /* for moment */ | |
527 | uiout = tui_out; | |
9d876a16 SC |
528 | |
529 | /* Save tty for SIGCONT. */ | |
530 | savetty (); | |
c906108c | 531 | } |
a198b876 | 532 | else |
c906108c | 533 | { |
a198b876 SC |
534 | /* Restore gdb output. */ |
535 | gdb_stdout = tui_old_stdout; | |
536 | gdb_stderr = tui_old_stderr; | |
537 | gdb_stdlog = gdb_stdout; /* for moment */ | |
538 | gdb_stdtarg = gdb_stderr; /* for moment */ | |
539 | uiout = tui_old_uiout; | |
540 | ||
541 | /* Restore readline. */ | |
542 | rl_redisplay_function = tui_old_rl_redisplay_function; | |
543 | rl_deprep_term_function = tui_old_rl_deprep_terminal; | |
544 | rl_prep_term_function = tui_old_rl_prep_terminal; | |
545 | rl_getc_function = tui_old_rl_getc_function; | |
546 | rl_outstream = tui_old_rl_outstream; | |
8cee930b | 547 | rl_completion_display_matches_hook = 0; |
a198b876 | 548 | readline_echoing_p = tui_old_readline_echoing_p; |
bd9b0abf | 549 | rl_already_prompted = 0; |
9d876a16 SC |
550 | |
551 | /* Save tty for SIGCONT. */ | |
552 | savetty (); | |
553 | } | |
554 | } | |
555 | ||
556 | #ifdef SIGCONT | |
557 | /* Catch SIGCONT to restore the terminal and refresh the screen. */ | |
558 | static void | |
559 | tui_cont_sig (int sig) | |
560 | { | |
561 | if (tui_active) | |
562 | { | |
563 | /* Restore the terminal setting because another process (shell) | |
564 | might have changed it. */ | |
565 | resetty (); | |
566 | ||
567 | /* Force a refresh of the screen. */ | |
568 | tuiRefreshAll (); | |
d75e970c SC |
569 | |
570 | /* Update cursor position on the screen. */ | |
571 | wmove (cmdWin->generic.handle, | |
572 | cmdWin->detail.commandInfo.start_line, | |
573 | cmdWin->detail.commandInfo.curch); | |
574 | wrefresh (cmdWin->generic.handle); | |
c906108c | 575 | } |
9d876a16 | 576 | signal (sig, tui_cont_sig); |
a198b876 | 577 | } |
9d876a16 | 578 | #endif |
c906108c | 579 | |
a198b876 SC |
580 | /* Initialize the IO for gdb in curses mode. */ |
581 | void | |
582 | tui_initialize_io () | |
583 | { | |
9d876a16 SC |
584 | #ifdef SIGCONT |
585 | signal (SIGCONT, tui_cont_sig); | |
586 | #endif | |
587 | ||
a198b876 SC |
588 | /* Create tui output streams. */ |
589 | tui_stdout = tui_fileopen (stdout); | |
590 | tui_stderr = tui_fileopen (stderr); | |
591 | tui_out = tui_out_new (tui_stdout); | |
592 | ||
593 | /* Create the default UI. It is not created because we installed | |
594 | a init_ui_hook. */ | |
2b68e2c5 | 595 | tui_old_uiout = uiout = cli_out_new (gdb_stdout); |
a198b876 | 596 | |
8cee930b | 597 | #ifdef TUI_USE_PIPE_FOR_READLINE |
a198b876 SC |
598 | /* Temporary solution for readline writing to stdout: |
599 | redirect readline output in a pipe, read that pipe and | |
600 | output the content in the curses command window. */ | |
601 | if (pipe (tui_readline_pipe) != 0) | |
c906108c | 602 | { |
a198b876 SC |
603 | fprintf_unfiltered (gdb_stderr, "Cannot create pipe for readline"); |
604 | exit (1); | |
c906108c | 605 | } |
a198b876 SC |
606 | tui_rl_outstream = fdopen (tui_readline_pipe[1], "w"); |
607 | if (tui_rl_outstream == 0) | |
c906108c | 608 | { |
a198b876 SC |
609 | fprintf_unfiltered (gdb_stderr, "Cannot redirect readline output"); |
610 | exit (1); | |
c906108c | 611 | } |
0f59c96f | 612 | setvbuf (tui_rl_outstream, (char*) NULL, _IOLBF, 0); |
c906108c | 613 | |
a198b876 SC |
614 | #ifdef O_NONBLOCK |
615 | (void) fcntl (tui_readline_pipe[0], F_SETFL, O_NONBLOCK); | |
c906108c | 616 | #else |
a198b876 SC |
617 | #ifdef O_NDELAY |
618 | (void) fcntl (tui_readline_pipe[0], F_SETFL, O_NDELAY); | |
c906108c | 619 | #endif |
a198b876 | 620 | #endif |
a198b876 | 621 | add_file_handler (tui_readline_pipe[0], tui_readline_output, 0); |
8cee930b SC |
622 | #else |
623 | tui_rl_outstream = stdout; | |
624 | #endif | |
a198b876 SC |
625 | } |
626 | ||
627 | /* Get a character from the command window. This is called from the readline | |
628 | package. */ | |
629 | int | |
630 | tui_getc (FILE *fp) | |
631 | { | |
632 | int ch; | |
633 | WINDOW *w; | |
634 | ||
635 | w = cmdWin->generic.handle; | |
636 | ||
8cee930b | 637 | #ifdef TUI_USE_PIPE_FOR_READLINE |
a198b876 SC |
638 | /* Flush readline output. */ |
639 | tui_readline_output (GDB_READABLE, 0); | |
8cee930b SC |
640 | #endif |
641 | ||
a198b876 | 642 | ch = wgetch (w); |
c906108c SS |
643 | ch = _tuiHandleResizeDuringIO (ch); |
644 | ||
a198b876 SC |
645 | /* The \n must be echoed because it will not be printed by readline. */ |
646 | if (ch == '\n') | |
647 | { | |
648 | /* When hitting return with an empty input, gdb executes the last | |
649 | command. If we emit a newline, this fills up the command window | |
650 | with empty lines with gdb prompt at beginning. Instead of that, | |
651 | stay on the same line but provide a visual effect to show the | |
652 | user we recognized the command. */ | |
653 | if (rl_end == 0) | |
654 | { | |
655 | wmove (w, cmdWin->detail.commandInfo.curLine, 0); | |
656 | ||
657 | /* Clear the line. This will blink the gdb prompt since | |
658 | it will be redrawn at the same line. */ | |
659 | wclrtoeol (w); | |
660 | wrefresh (w); | |
661 | napms (20); | |
662 | } | |
663 | else | |
664 | { | |
665 | wmove (w, cmdWin->detail.commandInfo.curLine, | |
666 | cmdWin->detail.commandInfo.curch); | |
667 | waddch (w, ch); | |
668 | } | |
669 | } | |
670 | ||
c906108c SS |
671 | if (m_isCommandChar (ch)) |
672 | { /* Handle prev/next/up/down here */ | |
c906108c | 673 | ch = tuiDispatchCtrlChar (ch); |
c906108c | 674 | } |
a198b876 | 675 | |
c906108c SS |
676 | if (ch == '\n' || ch == '\r' || ch == '\f') |
677 | cmdWin->detail.commandInfo.curch = 0; | |
a198b876 | 678 | #if 0 |
c906108c SS |
679 | else |
680 | tuiIncrCommandCharCountBy (1); | |
a198b876 SC |
681 | #endif |
682 | if (ch == KEY_BACKSPACE) | |
683 | return '\b'; | |
684 | ||
c906108c | 685 | return ch; |
a198b876 | 686 | } |
c906108c | 687 | |
c906108c | 688 | |
a198b876 SC |
689 | /* Cleanup when a resize has occured. |
690 | Returns the character that must be processed. */ | |
c906108c | 691 | static unsigned int |
eca6576c | 692 | _tuiHandleResizeDuringIO (unsigned int originalCh) |
c906108c SS |
693 | { |
694 | if (tuiWinResized ()) | |
695 | { | |
e8b915dc | 696 | tuiRefreshAll (); |
c906108c SS |
697 | dont_repeat (); |
698 | tuiSetWinResizedTo (FALSE); | |
c906108c SS |
699 | return '\n'; |
700 | } | |
701 | else | |
702 | return originalCh; | |
a198b876 | 703 | } |