Commit | Line | Data |
---|---|---|
d318976c | 1 | /* GDB CLI command scripting. |
8926118c | 2 | |
10f9c213 | 3 | Copyright (c) 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, |
698ba934 DJ |
4 | 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2004, 2005, 2006 |
5 | Free Software Foundation, Inc. | |
d318976c FN |
6 | |
7 | This file is part of GDB. | |
8 | ||
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2 of the License, or | |
12 | (at your option) any later version. | |
13 | ||
14 | This program is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with this program; if not, write to the Free Software | |
10f9c213 EZ |
21 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
22 | Boston, MA 02110-1301, USA. */ | |
d318976c FN |
23 | |
24 | #include "defs.h" | |
25 | #include "value.h" | |
26 | #include "language.h" /* For value_true */ | |
27 | #include <ctype.h> | |
28 | ||
d318976c | 29 | #include "ui-out.h" |
5f8a3188 | 30 | #include "gdb_string.h" |
17d92a02 | 31 | #include "exceptions.h" |
d318976c FN |
32 | #include "top.h" |
33 | #include "cli/cli-cmds.h" | |
34 | #include "cli/cli-decode.h" | |
35 | #include "cli/cli-script.h" | |
c03c782f | 36 | #include "gdb_assert.h" |
d318976c | 37 | |
d318976c FN |
38 | /* Prototypes for local functions */ |
39 | ||
d318976c FN |
40 | static enum command_control_type |
41 | recurse_read_control_structure (struct command_line *current_cmd); | |
42 | ||
43 | static char *insert_args (char *line); | |
44 | ||
45 | static struct cleanup * setup_user_args (char *p); | |
46 | ||
47 | static void validate_comname (char *); | |
48 | ||
49 | /* Level of control structure. */ | |
50 | static int control_level; | |
51 | ||
d318976c FN |
52 | /* Structure for arguments to user defined functions. */ |
53 | #define MAXUSERARGS 10 | |
54 | struct user_args | |
55 | { | |
56 | struct user_args *next; | |
57 | struct | |
58 | { | |
59 | char *arg; | |
60 | int len; | |
61 | } | |
62 | a[MAXUSERARGS]; | |
63 | int count; | |
64 | } | |
65 | *user_args; | |
66 | ||
67 | \f | |
68 | /* Allocate, initialize a new command line structure for one of the | |
69 | control commands (if/while). */ | |
70 | ||
71 | static struct command_line * | |
72 | build_command_line (enum command_control_type type, char *args) | |
73 | { | |
74 | struct command_line *cmd; | |
75 | ||
76 | if (args == NULL) | |
8a3fe4f8 | 77 | error (_("if/while commands require arguments.")); |
d318976c FN |
78 | |
79 | cmd = (struct command_line *) xmalloc (sizeof (struct command_line)); | |
80 | cmd->next = NULL; | |
81 | cmd->control_type = type; | |
82 | ||
83 | cmd->body_count = 1; | |
84 | cmd->body_list | |
85 | = (struct command_line **) xmalloc (sizeof (struct command_line *) | |
86 | * cmd->body_count); | |
87 | memset (cmd->body_list, 0, sizeof (struct command_line *) * cmd->body_count); | |
88 | cmd->line = savestring (args, strlen (args)); | |
89 | return cmd; | |
90 | } | |
91 | ||
92 | /* Build and return a new command structure for the control commands | |
93 | such as "if" and "while". */ | |
94 | ||
95 | static struct command_line * | |
96 | get_command_line (enum command_control_type type, char *arg) | |
97 | { | |
98 | struct command_line *cmd; | |
99 | struct cleanup *old_chain = NULL; | |
100 | ||
101 | /* Allocate and build a new command line structure. */ | |
102 | cmd = build_command_line (type, arg); | |
103 | ||
104 | old_chain = make_cleanup_free_command_lines (&cmd); | |
105 | ||
106 | /* Read in the body of this command. */ | |
107 | if (recurse_read_control_structure (cmd) == invalid_control) | |
108 | { | |
8a3fe4f8 | 109 | warning (_("Error reading in control structure.")); |
d318976c FN |
110 | do_cleanups (old_chain); |
111 | return NULL; | |
112 | } | |
113 | ||
114 | discard_cleanups (old_chain); | |
115 | return cmd; | |
116 | } | |
117 | ||
118 | /* Recursively print a command (including full control structures). */ | |
8926118c | 119 | |
d318976c FN |
120 | void |
121 | print_command_lines (struct ui_out *uiout, struct command_line *cmd, | |
122 | unsigned int depth) | |
123 | { | |
124 | struct command_line *list; | |
125 | ||
126 | list = cmd; | |
127 | while (list) | |
128 | { | |
129 | ||
130 | if (depth) | |
131 | ui_out_spaces (uiout, 2 * depth); | |
132 | ||
133 | /* A simple command, print it and continue. */ | |
134 | if (list->control_type == simple_control) | |
135 | { | |
136 | ui_out_field_string (uiout, NULL, list->line); | |
137 | ui_out_text (uiout, "\n"); | |
138 | list = list->next; | |
139 | continue; | |
140 | } | |
141 | ||
142 | /* loop_continue to jump to the start of a while loop, print it | |
143 | and continue. */ | |
144 | if (list->control_type == continue_control) | |
145 | { | |
146 | ui_out_field_string (uiout, NULL, "loop_continue"); | |
147 | ui_out_text (uiout, "\n"); | |
148 | list = list->next; | |
149 | continue; | |
150 | } | |
151 | ||
152 | /* loop_break to break out of a while loop, print it and continue. */ | |
153 | if (list->control_type == break_control) | |
154 | { | |
155 | ui_out_field_string (uiout, NULL, "loop_break"); | |
156 | ui_out_text (uiout, "\n"); | |
157 | list = list->next; | |
158 | continue; | |
159 | } | |
160 | ||
161 | /* A while command. Recursively print its subcommands and continue. */ | |
162 | if (list->control_type == while_control) | |
163 | { | |
d318976c FN |
164 | ui_out_field_fmt (uiout, NULL, "while %s", list->line); |
165 | ui_out_text (uiout, "\n"); | |
166 | print_command_lines (uiout, *list->body_list, depth + 1); | |
d318976c FN |
167 | if (depth) |
168 | ui_out_spaces (uiout, 2 * depth); | |
e6ccd35f JSC |
169 | ui_out_field_string (uiout, NULL, "end"); |
170 | ui_out_text (uiout, "\n"); | |
d318976c FN |
171 | list = list->next; |
172 | continue; | |
173 | } | |
174 | ||
175 | /* An if command. Recursively print both arms before continueing. */ | |
176 | if (list->control_type == if_control) | |
177 | { | |
d318976c FN |
178 | ui_out_field_fmt (uiout, NULL, "if %s", list->line); |
179 | ui_out_text (uiout, "\n"); | |
180 | /* The true arm. */ | |
181 | print_command_lines (uiout, list->body_list[0], depth + 1); | |
182 | ||
183 | /* Show the false arm if it exists. */ | |
184 | if (list->body_count == 2) | |
185 | { | |
186 | if (depth) | |
187 | ui_out_spaces (uiout, 2 * depth); | |
188 | ui_out_field_string (uiout, NULL, "else"); | |
e6ccd35f | 189 | ui_out_text (uiout, "\n"); |
d318976c FN |
190 | print_command_lines (uiout, list->body_list[1], depth + 1); |
191 | } | |
192 | ||
d318976c FN |
193 | if (depth) |
194 | ui_out_spaces (uiout, 2 * depth); | |
e6ccd35f JSC |
195 | ui_out_field_string (uiout, NULL, "end"); |
196 | ui_out_text (uiout, "\n"); | |
d318976c FN |
197 | list = list->next; |
198 | continue; | |
199 | } | |
200 | ||
201 | /* ignore illegal command type and try next */ | |
202 | list = list->next; | |
203 | } /* while (list) */ | |
204 | } | |
d318976c | 205 | |
5913bcb0 AC |
206 | /* Handle pre-post hooks. */ |
207 | ||
b9362cc7 | 208 | static void |
5913bcb0 AC |
209 | clear_hook_in_cleanup (void *data) |
210 | { | |
211 | struct cmd_list_element *c = data; | |
212 | c->hook_in = 0; /* Allow hook to work again once it is complete */ | |
213 | } | |
214 | ||
215 | void | |
216 | execute_cmd_pre_hook (struct cmd_list_element *c) | |
217 | { | |
218 | if ((c->hook_pre) && (!c->hook_in)) | |
219 | { | |
220 | struct cleanup *cleanups = make_cleanup (clear_hook_in_cleanup, c); | |
221 | c->hook_in = 1; /* Prevent recursive hooking */ | |
222 | execute_user_command (c->hook_pre, (char *) 0); | |
223 | do_cleanups (cleanups); | |
224 | } | |
225 | } | |
226 | ||
227 | void | |
228 | execute_cmd_post_hook (struct cmd_list_element *c) | |
229 | { | |
230 | if ((c->hook_post) && (!c->hook_in)) | |
231 | { | |
232 | struct cleanup *cleanups = make_cleanup (clear_hook_in_cleanup, c); | |
233 | c->hook_in = 1; /* Prevent recursive hooking */ | |
234 | execute_user_command (c->hook_post, (char *) 0); | |
235 | do_cleanups (cleanups); | |
236 | } | |
237 | } | |
238 | ||
d318976c | 239 | /* Execute the command in CMD. */ |
b9362cc7 | 240 | static void |
20f01a46 DH |
241 | do_restore_user_call_depth (void * call_depth) |
242 | { | |
243 | int * depth = call_depth; | |
698ba934 DJ |
244 | (*depth)--; |
245 | if ((*depth) == 0) | |
246 | in_user_command = 0; | |
20f01a46 DH |
247 | } |
248 | ||
d318976c FN |
249 | |
250 | void | |
251 | execute_user_command (struct cmd_list_element *c, char *args) | |
252 | { | |
d5b5ac79 | 253 | struct command_line *cmdlines; |
d318976c FN |
254 | struct cleanup *old_chain; |
255 | enum command_control_type ret; | |
20f01a46 DH |
256 | static int user_call_depth = 0; |
257 | extern int max_user_call_depth; | |
d318976c FN |
258 | |
259 | old_chain = setup_user_args (args); | |
260 | ||
261 | cmdlines = c->user_commands; | |
262 | if (cmdlines == 0) | |
263 | /* Null command */ | |
264 | return; | |
265 | ||
20f01a46 | 266 | if (++user_call_depth > max_user_call_depth) |
8a3fe4f8 | 267 | error (_("Max user call depth exceeded -- command aborted.")); |
20f01a46 | 268 | |
698ba934 | 269 | make_cleanup (do_restore_user_call_depth, &user_call_depth); |
20f01a46 | 270 | |
d318976c FN |
271 | /* Set the instream to 0, indicating execution of a |
272 | user-defined function. */ | |
698ba934 | 273 | make_cleanup (do_restore_instream_cleanup, instream); |
d318976c | 274 | instream = (FILE *) 0; |
698ba934 DJ |
275 | |
276 | /* Also set the global in_user_command, so that NULL instream is | |
277 | not confused with Insight. */ | |
278 | in_user_command = 1; | |
279 | ||
d318976c FN |
280 | while (cmdlines) |
281 | { | |
282 | ret = execute_control_command (cmdlines); | |
283 | if (ret != simple_control && ret != break_control) | |
284 | { | |
8a3fe4f8 | 285 | warning (_("Error in control structure.")); |
d318976c FN |
286 | break; |
287 | } | |
288 | cmdlines = cmdlines->next; | |
289 | } | |
290 | do_cleanups (old_chain); | |
291 | } | |
292 | ||
293 | enum command_control_type | |
294 | execute_control_command (struct command_line *cmd) | |
295 | { | |
296 | struct expression *expr; | |
297 | struct command_line *current; | |
4d2acc65 | 298 | struct cleanup *old_chain = make_cleanup (null_cleanup, 0); |
f976f6d4 AC |
299 | struct value *val; |
300 | struct value *val_mark; | |
d318976c FN |
301 | int loop; |
302 | enum command_control_type ret; | |
303 | char *new_line; | |
304 | ||
4d2acc65 AC |
305 | /* Start by assuming failure, if a problem is detected, the code |
306 | below will simply "break" out of the switch. */ | |
307 | ret = invalid_control; | |
308 | ||
d318976c FN |
309 | switch (cmd->control_type) |
310 | { | |
311 | case simple_control: | |
312 | /* A simple command, execute it and return. */ | |
313 | new_line = insert_args (cmd->line); | |
314 | if (!new_line) | |
4d2acc65 AC |
315 | break; |
316 | make_cleanup (free_current_contents, &new_line); | |
d318976c FN |
317 | execute_command (new_line, 0); |
318 | ret = cmd->control_type; | |
319 | break; | |
320 | ||
321 | case continue_control: | |
322 | case break_control: | |
323 | /* Return for "continue", and "break" so we can either | |
324 | continue the loop at the top, or break out. */ | |
325 | ret = cmd->control_type; | |
326 | break; | |
327 | ||
328 | case while_control: | |
329 | { | |
330 | /* Parse the loop control expression for the while statement. */ | |
331 | new_line = insert_args (cmd->line); | |
332 | if (!new_line) | |
4d2acc65 AC |
333 | break; |
334 | make_cleanup (free_current_contents, &new_line); | |
d318976c FN |
335 | expr = parse_expression (new_line); |
336 | make_cleanup (free_current_contents, &expr); | |
337 | ||
338 | ret = simple_control; | |
339 | loop = 1; | |
340 | ||
341 | /* Keep iterating so long as the expression is true. */ | |
342 | while (loop == 1) | |
343 | { | |
344 | int cond_result; | |
345 | ||
346 | QUIT; | |
347 | ||
348 | /* Evaluate the expression. */ | |
349 | val_mark = value_mark (); | |
350 | val = evaluate_expression (expr); | |
351 | cond_result = value_true (val); | |
352 | value_free_to_mark (val_mark); | |
353 | ||
354 | /* If the value is false, then break out of the loop. */ | |
355 | if (!cond_result) | |
356 | break; | |
357 | ||
358 | /* Execute the body of the while statement. */ | |
359 | current = *cmd->body_list; | |
360 | while (current) | |
361 | { | |
362 | ret = execute_control_command (current); | |
363 | ||
364 | /* If we got an error, or a "break" command, then stop | |
365 | looping. */ | |
366 | if (ret == invalid_control || ret == break_control) | |
367 | { | |
368 | loop = 0; | |
369 | break; | |
370 | } | |
371 | ||
372 | /* If we got a "continue" command, then restart the loop | |
373 | at this point. */ | |
374 | if (ret == continue_control) | |
375 | break; | |
376 | ||
377 | /* Get the next statement. */ | |
378 | current = current->next; | |
379 | } | |
380 | } | |
381 | ||
382 | /* Reset RET so that we don't recurse the break all the way down. */ | |
383 | if (ret == break_control) | |
384 | ret = simple_control; | |
385 | ||
386 | break; | |
387 | } | |
388 | ||
389 | case if_control: | |
390 | { | |
391 | new_line = insert_args (cmd->line); | |
392 | if (!new_line) | |
4d2acc65 AC |
393 | break; |
394 | make_cleanup (free_current_contents, &new_line); | |
d318976c FN |
395 | /* Parse the conditional for the if statement. */ |
396 | expr = parse_expression (new_line); | |
397 | make_cleanup (free_current_contents, &expr); | |
398 | ||
399 | current = NULL; | |
400 | ret = simple_control; | |
401 | ||
402 | /* Evaluate the conditional. */ | |
403 | val_mark = value_mark (); | |
404 | val = evaluate_expression (expr); | |
405 | ||
406 | /* Choose which arm to take commands from based on the value of the | |
407 | conditional expression. */ | |
408 | if (value_true (val)) | |
409 | current = *cmd->body_list; | |
410 | else if (cmd->body_count == 2) | |
411 | current = *(cmd->body_list + 1); | |
412 | value_free_to_mark (val_mark); | |
413 | ||
414 | /* Execute commands in the given arm. */ | |
415 | while (current) | |
416 | { | |
417 | ret = execute_control_command (current); | |
418 | ||
419 | /* If we got an error, get out. */ | |
420 | if (ret != simple_control) | |
421 | break; | |
422 | ||
423 | /* Get the next statement in the body. */ | |
424 | current = current->next; | |
425 | } | |
426 | ||
427 | break; | |
428 | } | |
429 | ||
430 | default: | |
8a3fe4f8 | 431 | warning (_("Invalid control type in command structure.")); |
4d2acc65 | 432 | break; |
d318976c FN |
433 | } |
434 | ||
4d2acc65 | 435 | do_cleanups (old_chain); |
d318976c FN |
436 | |
437 | return ret; | |
438 | } | |
439 | ||
440 | /* "while" command support. Executes a body of statements while the | |
441 | loop condition is nonzero. */ | |
442 | ||
443 | void | |
444 | while_command (char *arg, int from_tty) | |
445 | { | |
446 | struct command_line *command = NULL; | |
447 | ||
448 | control_level = 1; | |
449 | command = get_command_line (while_control, arg); | |
450 | ||
451 | if (command == NULL) | |
452 | return; | |
453 | ||
454 | execute_control_command (command); | |
455 | free_command_lines (&command); | |
456 | } | |
457 | ||
458 | /* "if" command support. Execute either the true or false arm depending | |
459 | on the value of the if conditional. */ | |
460 | ||
461 | void | |
462 | if_command (char *arg, int from_tty) | |
463 | { | |
464 | struct command_line *command = NULL; | |
465 | ||
466 | control_level = 1; | |
467 | command = get_command_line (if_control, arg); | |
468 | ||
469 | if (command == NULL) | |
470 | return; | |
471 | ||
472 | execute_control_command (command); | |
473 | free_command_lines (&command); | |
474 | } | |
475 | ||
476 | /* Cleanup */ | |
477 | static void | |
478 | arg_cleanup (void *ignore) | |
479 | { | |
480 | struct user_args *oargs = user_args; | |
481 | if (!user_args) | |
8e65ff28 | 482 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 483 | _("arg_cleanup called with no user args.\n")); |
d318976c FN |
484 | |
485 | user_args = user_args->next; | |
b8c9b27d | 486 | xfree (oargs); |
d318976c FN |
487 | } |
488 | ||
489 | /* Bind the incomming arguments for a user defined command to | |
490 | $arg0, $arg1 ... $argMAXUSERARGS. */ | |
491 | ||
492 | static struct cleanup * | |
493 | setup_user_args (char *p) | |
494 | { | |
495 | struct user_args *args; | |
496 | struct cleanup *old_chain; | |
497 | unsigned int arg_count = 0; | |
498 | ||
499 | args = (struct user_args *) xmalloc (sizeof (struct user_args)); | |
500 | memset (args, 0, sizeof (struct user_args)); | |
501 | ||
502 | args->next = user_args; | |
503 | user_args = args; | |
504 | ||
505 | old_chain = make_cleanup (arg_cleanup, 0/*ignored*/); | |
506 | ||
507 | if (p == NULL) | |
508 | return old_chain; | |
509 | ||
510 | while (*p) | |
511 | { | |
512 | char *start_arg; | |
513 | int squote = 0; | |
514 | int dquote = 0; | |
515 | int bsquote = 0; | |
516 | ||
517 | if (arg_count >= MAXUSERARGS) | |
518 | { | |
8a3fe4f8 | 519 | error (_("user defined function may only have %d arguments."), |
d318976c FN |
520 | MAXUSERARGS); |
521 | return old_chain; | |
522 | } | |
523 | ||
524 | /* Strip whitespace. */ | |
525 | while (*p == ' ' || *p == '\t') | |
526 | p++; | |
527 | ||
528 | /* P now points to an argument. */ | |
529 | start_arg = p; | |
530 | user_args->a[arg_count].arg = p; | |
531 | ||
532 | /* Get to the end of this argument. */ | |
533 | while (*p) | |
534 | { | |
535 | if (((*p == ' ' || *p == '\t')) && !squote && !dquote && !bsquote) | |
536 | break; | |
537 | else | |
538 | { | |
539 | if (bsquote) | |
540 | bsquote = 0; | |
541 | else if (*p == '\\') | |
542 | bsquote = 1; | |
543 | else if (squote) | |
544 | { | |
545 | if (*p == '\'') | |
546 | squote = 0; | |
547 | } | |
548 | else if (dquote) | |
549 | { | |
550 | if (*p == '"') | |
551 | dquote = 0; | |
552 | } | |
553 | else | |
554 | { | |
555 | if (*p == '\'') | |
556 | squote = 1; | |
557 | else if (*p == '"') | |
558 | dquote = 1; | |
559 | } | |
560 | p++; | |
561 | } | |
562 | } | |
563 | ||
564 | user_args->a[arg_count].len = p - start_arg; | |
565 | arg_count++; | |
566 | user_args->count++; | |
567 | } | |
568 | return old_chain; | |
569 | } | |
570 | ||
571 | /* Given character string P, return a point to the first argument ($arg), | |
572 | or NULL if P contains no arguments. */ | |
573 | ||
574 | static char * | |
575 | locate_arg (char *p) | |
576 | { | |
577 | while ((p = strchr (p, '$'))) | |
578 | { | |
c03c782f AS |
579 | if (strncmp (p, "$arg", 4) == 0 |
580 | && (isdigit (p[4]) || p[4] == 'c')) | |
d318976c FN |
581 | return p; |
582 | p++; | |
583 | } | |
584 | return NULL; | |
585 | } | |
586 | ||
587 | /* Insert the user defined arguments stored in user_arg into the $arg | |
588 | arguments found in line, with the updated copy being placed into nline. */ | |
589 | ||
590 | static char * | |
591 | insert_args (char *line) | |
592 | { | |
593 | char *p, *save_line, *new_line; | |
594 | unsigned len, i; | |
595 | ||
596 | /* First we need to know how much memory to allocate for the new line. */ | |
597 | save_line = line; | |
598 | len = 0; | |
599 | while ((p = locate_arg (line))) | |
600 | { | |
601 | len += p - line; | |
602 | i = p[4] - '0'; | |
603 | ||
c03c782f AS |
604 | if (p[4] == 'c') |
605 | { | |
606 | /* $argc. Number will be <=10. */ | |
607 | len += user_args->count == 10 ? 2 : 1; | |
608 | } | |
609 | else if (i >= user_args->count) | |
d318976c | 610 | { |
8a3fe4f8 | 611 | error (_("Missing argument %d in user function."), i); |
d318976c FN |
612 | return NULL; |
613 | } | |
c03c782f AS |
614 | else |
615 | { | |
616 | len += user_args->a[i].len; | |
617 | } | |
d318976c FN |
618 | line = p + 5; |
619 | } | |
620 | ||
621 | /* Don't forget the tail. */ | |
622 | len += strlen (line); | |
623 | ||
624 | /* Allocate space for the new line and fill it in. */ | |
625 | new_line = (char *) xmalloc (len + 1); | |
626 | if (new_line == NULL) | |
627 | return NULL; | |
628 | ||
629 | /* Restore pointer to beginning of old line. */ | |
630 | line = save_line; | |
631 | ||
632 | /* Save pointer to beginning of new line. */ | |
633 | save_line = new_line; | |
634 | ||
635 | while ((p = locate_arg (line))) | |
636 | { | |
637 | int i, len; | |
638 | ||
639 | memcpy (new_line, line, p - line); | |
640 | new_line += p - line; | |
d318976c | 641 | |
c03c782f AS |
642 | if (p[4] == 'c') |
643 | { | |
644 | gdb_assert (user_args->count >= 0 && user_args->count <= 10); | |
645 | if (user_args->count == 10) | |
646 | { | |
647 | *(new_line++) = '1'; | |
648 | *(new_line++) = '0'; | |
649 | } | |
650 | else | |
651 | *(new_line++) = user_args->count + '0'; | |
652 | } | |
653 | else | |
d318976c | 654 | { |
c03c782f AS |
655 | i = p[4] - '0'; |
656 | len = user_args->a[i].len; | |
657 | if (len) | |
658 | { | |
659 | memcpy (new_line, user_args->a[i].arg, len); | |
660 | new_line += len; | |
661 | } | |
d318976c FN |
662 | } |
663 | line = p + 5; | |
664 | } | |
665 | /* Don't forget the tail. */ | |
666 | strcpy (new_line, line); | |
667 | ||
668 | /* Return a pointer to the beginning of the new line. */ | |
669 | return save_line; | |
670 | } | |
671 | ||
672 | \f | |
673 | /* Expand the body_list of COMMAND so that it can hold NEW_LENGTH | |
674 | code bodies. This is typically used when we encounter an "else" | |
675 | clause for an "if" command. */ | |
676 | ||
677 | static void | |
678 | realloc_body_list (struct command_line *command, int new_length) | |
679 | { | |
680 | int n; | |
681 | struct command_line **body_list; | |
682 | ||
683 | n = command->body_count; | |
684 | ||
685 | /* Nothing to do? */ | |
686 | if (new_length <= n) | |
687 | return; | |
688 | ||
689 | body_list = (struct command_line **) | |
690 | xmalloc (sizeof (struct command_line *) * new_length); | |
691 | ||
692 | memcpy (body_list, command->body_list, sizeof (struct command_line *) * n); | |
693 | ||
b8c9b27d | 694 | xfree (command->body_list); |
d318976c FN |
695 | command->body_list = body_list; |
696 | command->body_count = new_length; | |
697 | } | |
698 | ||
699 | /* Read one line from the input stream. If the command is an "else" or | |
700 | "end", return such an indication to the caller. */ | |
701 | ||
702 | static enum misc_command_type | |
703 | read_next_line (struct command_line **command) | |
704 | { | |
705 | char *p, *p1, *prompt_ptr, control_prompt[256]; | |
706 | int i = 0; | |
707 | ||
708 | if (control_level >= 254) | |
8a3fe4f8 | 709 | error (_("Control nesting too deep!")); |
d318976c FN |
710 | |
711 | /* Set a prompt based on the nesting of the control commands. */ | |
9a4105ab | 712 | if (instream == stdin || (instream == 0 && deprecated_readline_hook != NULL)) |
d318976c FN |
713 | { |
714 | for (i = 0; i < control_level; i++) | |
715 | control_prompt[i] = ' '; | |
716 | control_prompt[i] = '>'; | |
717 | control_prompt[i + 1] = '\0'; | |
718 | prompt_ptr = (char *) &control_prompt[0]; | |
719 | } | |
720 | else | |
721 | prompt_ptr = NULL; | |
722 | ||
723 | p = command_line_input (prompt_ptr, instream == stdin, "commands"); | |
724 | ||
725 | /* Not sure what to do here. */ | |
726 | if (p == NULL) | |
727 | return end_command; | |
728 | ||
729 | /* Strip leading and trailing whitespace. */ | |
730 | while (*p == ' ' || *p == '\t') | |
731 | p++; | |
732 | ||
733 | p1 = p + strlen (p); | |
734 | while (p1 != p && (p1[-1] == ' ' || p1[-1] == '\t')) | |
735 | p1--; | |
736 | ||
737 | /* Blanks and comments don't really do anything, but we need to | |
738 | distinguish them from else, end and other commands which can be | |
739 | executed. */ | |
740 | if (p1 == p || p[0] == '#') | |
741 | return nop_command; | |
742 | ||
743 | /* Is this the end of a simple, while, or if control structure? */ | |
744 | if (p1 - p == 3 && !strncmp (p, "end", 3)) | |
745 | return end_command; | |
746 | ||
747 | /* Is the else clause of an if control structure? */ | |
748 | if (p1 - p == 4 && !strncmp (p, "else", 4)) | |
749 | return else_command; | |
750 | ||
751 | /* Check for while, if, break, continue, etc and build a new command | |
752 | line structure for them. */ | |
753 | if (p1 - p > 5 && !strncmp (p, "while", 5)) | |
33f2d567 JM |
754 | { |
755 | char *first_arg; | |
756 | first_arg = p + 5; | |
757 | while (first_arg < p1 && isspace (*first_arg)) | |
758 | first_arg++; | |
759 | *command = build_command_line (while_control, first_arg); | |
760 | } | |
d318976c | 761 | else if (p1 - p > 2 && !strncmp (p, "if", 2)) |
33f2d567 JM |
762 | { |
763 | char *first_arg; | |
764 | first_arg = p + 2; | |
765 | while (first_arg < p1 && isspace (*first_arg)) | |
766 | first_arg++; | |
767 | *command = build_command_line (if_control, first_arg); | |
768 | } | |
d318976c FN |
769 | else if (p1 - p == 10 && !strncmp (p, "loop_break", 10)) |
770 | { | |
771 | *command = (struct command_line *) | |
772 | xmalloc (sizeof (struct command_line)); | |
773 | (*command)->next = NULL; | |
774 | (*command)->line = NULL; | |
775 | (*command)->control_type = break_control; | |
776 | (*command)->body_count = 0; | |
777 | (*command)->body_list = NULL; | |
778 | } | |
779 | else if (p1 - p == 13 && !strncmp (p, "loop_continue", 13)) | |
780 | { | |
781 | *command = (struct command_line *) | |
782 | xmalloc (sizeof (struct command_line)); | |
783 | (*command)->next = NULL; | |
784 | (*command)->line = NULL; | |
785 | (*command)->control_type = continue_control; | |
786 | (*command)->body_count = 0; | |
787 | (*command)->body_list = NULL; | |
788 | } | |
789 | else | |
790 | { | |
791 | /* A normal command. */ | |
792 | *command = (struct command_line *) | |
793 | xmalloc (sizeof (struct command_line)); | |
794 | (*command)->next = NULL; | |
795 | (*command)->line = savestring (p, p1 - p); | |
796 | (*command)->control_type = simple_control; | |
797 | (*command)->body_count = 0; | |
798 | (*command)->body_list = NULL; | |
799 | } | |
800 | ||
801 | /* Nothing special. */ | |
802 | return ok_command; | |
803 | } | |
804 | ||
805 | /* Recursively read in the control structures and create a command_line | |
806 | structure from them. | |
807 | ||
808 | The parent_control parameter is the control structure in which the | |
809 | following commands are nested. */ | |
810 | ||
811 | static enum command_control_type | |
812 | recurse_read_control_structure (struct command_line *current_cmd) | |
813 | { | |
814 | int current_body, i; | |
815 | enum misc_command_type val; | |
816 | enum command_control_type ret; | |
817 | struct command_line **body_ptr, *child_tail, *next; | |
818 | ||
819 | child_tail = NULL; | |
820 | current_body = 1; | |
821 | ||
822 | /* Sanity checks. */ | |
823 | if (current_cmd->control_type == simple_control) | |
8a3fe4f8 | 824 | error (_("Recursed on a simple control type.")); |
d318976c FN |
825 | |
826 | if (current_body > current_cmd->body_count) | |
8a3fe4f8 | 827 | error (_("Allocated body is smaller than this command type needs.")); |
d318976c FN |
828 | |
829 | /* Read lines from the input stream and build control structures. */ | |
830 | while (1) | |
831 | { | |
832 | dont_repeat (); | |
833 | ||
834 | next = NULL; | |
835 | val = read_next_line (&next); | |
836 | ||
837 | /* Just skip blanks and comments. */ | |
838 | if (val == nop_command) | |
839 | continue; | |
840 | ||
841 | if (val == end_command) | |
842 | { | |
843 | if (current_cmd->control_type == while_control | |
844 | || current_cmd->control_type == if_control) | |
845 | { | |
846 | /* Success reading an entire control structure. */ | |
847 | ret = simple_control; | |
848 | break; | |
849 | } | |
850 | else | |
851 | { | |
852 | ret = invalid_control; | |
853 | break; | |
854 | } | |
855 | } | |
856 | ||
857 | /* Not the end of a control structure. */ | |
858 | if (val == else_command) | |
859 | { | |
860 | if (current_cmd->control_type == if_control | |
861 | && current_body == 1) | |
862 | { | |
863 | realloc_body_list (current_cmd, 2); | |
864 | current_body = 2; | |
865 | child_tail = NULL; | |
866 | continue; | |
867 | } | |
868 | else | |
869 | { | |
870 | ret = invalid_control; | |
871 | break; | |
872 | } | |
873 | } | |
874 | ||
875 | if (child_tail) | |
876 | { | |
877 | child_tail->next = next; | |
878 | } | |
879 | else | |
880 | { | |
881 | body_ptr = current_cmd->body_list; | |
882 | for (i = 1; i < current_body; i++) | |
883 | body_ptr++; | |
884 | ||
885 | *body_ptr = next; | |
886 | ||
887 | } | |
888 | ||
889 | child_tail = next; | |
890 | ||
891 | /* If the latest line is another control structure, then recurse | |
892 | on it. */ | |
893 | if (next->control_type == while_control | |
894 | || next->control_type == if_control) | |
895 | { | |
896 | control_level++; | |
897 | ret = recurse_read_control_structure (next); | |
898 | control_level--; | |
899 | ||
900 | if (ret != simple_control) | |
901 | break; | |
902 | } | |
903 | } | |
904 | ||
905 | dont_repeat (); | |
906 | ||
907 | return ret; | |
908 | } | |
909 | ||
910 | /* Read lines from the input stream and accumulate them in a chain of | |
911 | struct command_line's, which is then returned. For input from a | |
912 | terminal, the special command "end" is used to mark the end of the | |
913 | input, and is not included in the returned chain of commands. */ | |
914 | ||
915 | #define END_MESSAGE "End with a line saying just \"end\"." | |
916 | ||
917 | struct command_line * | |
918 | read_command_lines (char *prompt_arg, int from_tty) | |
919 | { | |
920 | struct command_line *head, *tail, *next; | |
921 | struct cleanup *old_chain; | |
922 | enum command_control_type ret; | |
923 | enum misc_command_type val; | |
924 | ||
925 | control_level = 0; | |
698ba934 DJ |
926 | |
927 | if (from_tty && input_from_terminal_p ()) | |
d318976c | 928 | { |
698ba934 DJ |
929 | if (deprecated_readline_begin_hook) |
930 | { | |
931 | /* Note - intentional to merge messages with no newline */ | |
932 | (*deprecated_readline_begin_hook) ("%s %s\n", prompt_arg, END_MESSAGE); | |
933 | } | |
934 | else | |
935 | { | |
936 | printf_unfiltered ("%s\n%s\n", prompt_arg, END_MESSAGE); | |
937 | gdb_flush (gdb_stdout); | |
938 | } | |
d318976c FN |
939 | } |
940 | ||
941 | head = tail = NULL; | |
942 | old_chain = NULL; | |
943 | ||
944 | while (1) | |
945 | { | |
946 | val = read_next_line (&next); | |
947 | ||
948 | /* Ignore blank lines or comments. */ | |
949 | if (val == nop_command) | |
950 | continue; | |
951 | ||
952 | if (val == end_command) | |
953 | { | |
954 | ret = simple_control; | |
955 | break; | |
956 | } | |
957 | ||
958 | if (val != ok_command) | |
959 | { | |
960 | ret = invalid_control; | |
961 | break; | |
962 | } | |
963 | ||
964 | if (next->control_type == while_control | |
965 | || next->control_type == if_control) | |
966 | { | |
967 | control_level++; | |
968 | ret = recurse_read_control_structure (next); | |
969 | control_level--; | |
970 | ||
971 | if (ret == invalid_control) | |
972 | break; | |
973 | } | |
974 | ||
975 | if (tail) | |
976 | { | |
977 | tail->next = next; | |
978 | } | |
979 | else | |
980 | { | |
981 | head = next; | |
982 | old_chain = make_cleanup_free_command_lines (&head); | |
983 | } | |
984 | tail = next; | |
985 | } | |
986 | ||
987 | dont_repeat (); | |
988 | ||
989 | if (head) | |
990 | { | |
991 | if (ret != invalid_control) | |
992 | { | |
993 | discard_cleanups (old_chain); | |
994 | } | |
995 | else | |
996 | do_cleanups (old_chain); | |
997 | } | |
998 | ||
698ba934 | 999 | if (deprecated_readline_end_hook && from_tty && input_from_terminal_p ()) |
d318976c | 1000 | { |
9a4105ab | 1001 | (*deprecated_readline_end_hook) (); |
d318976c FN |
1002 | } |
1003 | return (head); | |
1004 | } | |
1005 | ||
1006 | /* Free a chain of struct command_line's. */ | |
1007 | ||
1008 | void | |
1009 | free_command_lines (struct command_line **lptr) | |
1010 | { | |
d5b5ac79 AC |
1011 | struct command_line *l = *lptr; |
1012 | struct command_line *next; | |
d318976c FN |
1013 | struct command_line **blist; |
1014 | int i; | |
1015 | ||
1016 | while (l) | |
1017 | { | |
1018 | if (l->body_count > 0) | |
1019 | { | |
1020 | blist = l->body_list; | |
1021 | for (i = 0; i < l->body_count; i++, blist++) | |
1022 | free_command_lines (blist); | |
1023 | } | |
1024 | next = l->next; | |
b8c9b27d KB |
1025 | xfree (l->line); |
1026 | xfree (l); | |
d318976c FN |
1027 | l = next; |
1028 | } | |
0d70f41b | 1029 | *lptr = NULL; |
d318976c FN |
1030 | } |
1031 | ||
1032 | static void | |
1033 | do_free_command_lines_cleanup (void *arg) | |
1034 | { | |
1035 | free_command_lines (arg); | |
1036 | } | |
1037 | ||
6c50ab1c | 1038 | struct cleanup * |
d318976c FN |
1039 | make_cleanup_free_command_lines (struct command_line **arg) |
1040 | { | |
1041 | return make_cleanup (do_free_command_lines_cleanup, arg); | |
1042 | } | |
c2b8ed2c MS |
1043 | |
1044 | struct command_line * | |
1045 | copy_command_lines (struct command_line *cmds) | |
1046 | { | |
1047 | struct command_line *result = NULL; | |
1048 | ||
1049 | if (cmds) | |
1050 | { | |
1051 | result = (struct command_line *) xmalloc (sizeof (struct command_line)); | |
1052 | ||
1053 | result->next = copy_command_lines (cmds->next); | |
1054 | result->line = xstrdup (cmds->line); | |
1055 | result->control_type = cmds->control_type; | |
1056 | result->body_count = cmds->body_count; | |
1057 | if (cmds->body_count > 0) | |
1058 | { | |
1059 | int i; | |
1060 | ||
1061 | result->body_list = (struct command_line **) | |
1062 | xmalloc (sizeof (struct command_line *) * cmds->body_count); | |
1063 | ||
1064 | for (i = 0; i < cmds->body_count; i++) | |
1065 | result->body_list[i] = copy_command_lines (cmds->body_list[i]); | |
1066 | } | |
1067 | else | |
1068 | result->body_list = NULL; | |
1069 | } | |
1070 | ||
1071 | return result; | |
1072 | } | |
d318976c FN |
1073 | \f |
1074 | static void | |
1075 | validate_comname (char *comname) | |
1076 | { | |
d5b5ac79 | 1077 | char *p; |
d318976c FN |
1078 | |
1079 | if (comname == 0) | |
e2e0b3e5 | 1080 | error_no_arg (_("name of command to define")); |
d318976c FN |
1081 | |
1082 | p = comname; | |
1083 | while (*p) | |
1084 | { | |
1085 | if (!isalnum (*p) && *p != '-' && *p != '_') | |
8a3fe4f8 | 1086 | error (_("Junk in argument list: \"%s\""), p); |
d318976c FN |
1087 | p++; |
1088 | } | |
1089 | } | |
1090 | ||
1091 | /* This is just a placeholder in the command data structures. */ | |
1092 | static void | |
1093 | user_defined_command (char *ignore, int from_tty) | |
1094 | { | |
1095 | } | |
1096 | ||
1097 | void | |
1098 | define_command (char *comname, int from_tty) | |
1099 | { | |
1100 | #define MAX_TMPBUF 128 | |
1101 | enum cmd_hook_type | |
1102 | { | |
1103 | CMD_NO_HOOK = 0, | |
1104 | CMD_PRE_HOOK, | |
1105 | CMD_POST_HOOK | |
1106 | }; | |
d5b5ac79 AC |
1107 | struct command_line *cmds; |
1108 | struct cmd_list_element *c, *newc, *oldc, *hookc = 0; | |
d318976c FN |
1109 | char *tem = comname; |
1110 | char *tem2; | |
1111 | char tmpbuf[MAX_TMPBUF]; | |
1112 | int hook_type = CMD_NO_HOOK; | |
1113 | int hook_name_size = 0; | |
1114 | ||
1115 | #define HOOK_STRING "hook-" | |
1116 | #define HOOK_LEN 5 | |
1117 | #define HOOK_POST_STRING "hookpost-" | |
1118 | #define HOOK_POST_LEN 9 | |
1119 | ||
1120 | validate_comname (comname); | |
1121 | ||
1122 | /* Look it up, and verify that we got an exact match. */ | |
1123 | c = lookup_cmd (&tem, cmdlist, "", -1, 1); | |
5cb316ef | 1124 | if (c && strcmp (comname, c->name) != 0) |
d318976c FN |
1125 | c = 0; |
1126 | ||
1127 | if (c) | |
1128 | { | |
ab4e3d93 | 1129 | int q; |
d318976c | 1130 | if (c->class == class_user || c->class == class_alias) |
e2e0b3e5 | 1131 | q = query (_("Redefine command \"%s\"? "), c->name); |
d318976c | 1132 | else |
e2e0b3e5 | 1133 | q = query (_("Really redefine built-in command \"%s\"? "), c->name); |
ab4e3d93 | 1134 | if (!q) |
8a3fe4f8 | 1135 | error (_("Command \"%s\" not redefined."), c->name); |
d318976c FN |
1136 | } |
1137 | ||
1138 | /* If this new command is a hook, then mark the command which it | |
1139 | is hooking. Note that we allow hooking `help' commands, so that | |
1140 | we can hook the `stop' pseudo-command. */ | |
1141 | ||
1142 | if (!strncmp (comname, HOOK_STRING, HOOK_LEN)) | |
1143 | { | |
1144 | hook_type = CMD_PRE_HOOK; | |
1145 | hook_name_size = HOOK_LEN; | |
1146 | } | |
1147 | else if (!strncmp (comname, HOOK_POST_STRING, HOOK_POST_LEN)) | |
1148 | { | |
1149 | hook_type = CMD_POST_HOOK; | |
1150 | hook_name_size = HOOK_POST_LEN; | |
1151 | } | |
1152 | ||
1153 | if (hook_type != CMD_NO_HOOK) | |
1154 | { | |
1155 | /* Look up cmd it hooks, and verify that we got an exact match. */ | |
1156 | tem = comname + hook_name_size; | |
1157 | hookc = lookup_cmd (&tem, cmdlist, "", -1, 0); | |
5cb316ef | 1158 | if (hookc && strcmp (comname + hook_name_size, hookc->name) != 0) |
d318976c FN |
1159 | hookc = 0; |
1160 | if (!hookc) | |
1161 | { | |
8a3fe4f8 | 1162 | warning (_("Your new `%s' command does not hook any existing command."), |
d318976c FN |
1163 | comname); |
1164 | if (!query ("Proceed? ")) | |
8a3fe4f8 | 1165 | error (_("Not confirmed.")); |
d318976c FN |
1166 | } |
1167 | } | |
1168 | ||
1169 | comname = savestring (comname, strlen (comname)); | |
1170 | ||
1171 | /* If the rest of the commands will be case insensitive, this one | |
1172 | should behave in the same manner. */ | |
1173 | for (tem = comname; *tem; tem++) | |
1174 | if (isupper (*tem)) | |
1175 | *tem = tolower (*tem); | |
1176 | ||
1177 | sprintf (tmpbuf, "Type commands for definition of \"%s\".", comname); | |
1178 | cmds = read_command_lines (tmpbuf, from_tty); | |
1179 | ||
1180 | if (c && c->class == class_user) | |
1181 | free_command_lines (&c->user_commands); | |
1182 | ||
1183 | newc = add_cmd (comname, class_user, user_defined_command, | |
1184 | (c && c->class == class_user) | |
1185 | ? c->doc : savestring ("User-defined.", 13), &cmdlist); | |
1186 | newc->user_commands = cmds; | |
1187 | ||
1188 | /* If this new command is a hook, then mark both commands as being | |
1189 | tied. */ | |
1190 | if (hookc) | |
1191 | { | |
1192 | switch (hook_type) | |
1193 | { | |
1194 | case CMD_PRE_HOOK: | |
1195 | hookc->hook_pre = newc; /* Target gets hooked. */ | |
1196 | newc->hookee_pre = hookc; /* We are marked as hooking target cmd. */ | |
1197 | break; | |
1198 | case CMD_POST_HOOK: | |
f48ff60a FN |
1199 | hookc->hook_post = newc; /* Target gets hooked. */ |
1200 | newc->hookee_post = hookc; /* We are marked as hooking target cmd. */ | |
d318976c FN |
1201 | break; |
1202 | default: | |
1203 | /* Should never come here as hookc would be 0. */ | |
e2e0b3e5 | 1204 | internal_error (__FILE__, __LINE__, _("bad switch")); |
d318976c FN |
1205 | } |
1206 | } | |
1207 | } | |
1208 | ||
1209 | void | |
1210 | document_command (char *comname, int from_tty) | |
1211 | { | |
1212 | struct command_line *doclines; | |
d5b5ac79 | 1213 | struct cmd_list_element *c; |
d318976c FN |
1214 | char *tem = comname; |
1215 | char tmpbuf[128]; | |
1216 | ||
1217 | validate_comname (comname); | |
1218 | ||
1219 | c = lookup_cmd (&tem, cmdlist, "", 0, 1); | |
1220 | ||
1221 | if (c->class != class_user) | |
8a3fe4f8 | 1222 | error (_("Command \"%s\" is built-in."), comname); |
d318976c FN |
1223 | |
1224 | sprintf (tmpbuf, "Type documentation for \"%s\".", comname); | |
1225 | doclines = read_command_lines (tmpbuf, from_tty); | |
1226 | ||
1227 | if (c->doc) | |
b8c9b27d | 1228 | xfree (c->doc); |
d318976c FN |
1229 | |
1230 | { | |
d5b5ac79 AC |
1231 | struct command_line *cl1; |
1232 | int len = 0; | |
d318976c FN |
1233 | |
1234 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
1235 | len += strlen (cl1->line) + 1; | |
1236 | ||
1237 | c->doc = (char *) xmalloc (len + 1); | |
1238 | *c->doc = 0; | |
1239 | ||
1240 | for (cl1 = doclines; cl1; cl1 = cl1->next) | |
1241 | { | |
1242 | strcat (c->doc, cl1->line); | |
1243 | if (cl1->next) | |
1244 | strcat (c->doc, "\n"); | |
1245 | } | |
1246 | } | |
1247 | ||
1248 | free_command_lines (&doclines); | |
1249 | } | |
1250 | \f | |
1251 | struct source_cleanup_lines_args | |
1252 | { | |
1253 | int old_line; | |
1254 | char *old_file; | |
d318976c FN |
1255 | }; |
1256 | ||
1257 | static void | |
4efb68b1 | 1258 | source_cleanup_lines (void *args) |
d318976c FN |
1259 | { |
1260 | struct source_cleanup_lines_args *p = | |
1261 | (struct source_cleanup_lines_args *) args; | |
1262 | source_line_number = p->old_line; | |
1263 | source_file_name = p->old_file; | |
d318976c FN |
1264 | } |
1265 | ||
d318976c FN |
1266 | static void |
1267 | do_fclose_cleanup (void *stream) | |
1268 | { | |
1269 | fclose (stream); | |
1270 | } | |
1271 | ||
17d92a02 AC |
1272 | struct wrapped_read_command_file_args |
1273 | { | |
1274 | FILE *stream; | |
1275 | }; | |
1276 | ||
1277 | static void | |
1278 | wrapped_read_command_file (struct ui_out *uiout, void *data) | |
1279 | { | |
1280 | struct wrapped_read_command_file_args *args = data; | |
1281 | read_command_file (args->stream); | |
1282 | } | |
1283 | ||
d318976c FN |
1284 | /* Used to implement source_command */ |
1285 | ||
1286 | void | |
1287 | script_from_file (FILE *stream, char *file) | |
1288 | { | |
1289 | struct cleanup *old_cleanups; | |
1290 | struct source_cleanup_lines_args old_lines; | |
1291 | int needed_length; | |
1292 | ||
1293 | if (stream == NULL) | |
e2e0b3e5 | 1294 | internal_error (__FILE__, __LINE__, _("called with NULL file pointer!")); |
d318976c FN |
1295 | |
1296 | old_cleanups = make_cleanup (do_fclose_cleanup, stream); | |
1297 | ||
1298 | old_lines.old_line = source_line_number; | |
1299 | old_lines.old_file = source_file_name; | |
d318976c FN |
1300 | make_cleanup (source_cleanup_lines, &old_lines); |
1301 | source_line_number = 0; | |
1302 | source_file_name = file; | |
d318976c FN |
1303 | /* This will get set every time we read a line. So it won't stay "" for |
1304 | long. */ | |
1305 | error_pre_print = ""; | |
1306 | ||
17d92a02 | 1307 | { |
71fff37b | 1308 | struct gdb_exception e; |
17d92a02 AC |
1309 | struct wrapped_read_command_file_args args; |
1310 | args.stream = stream; | |
1311 | e = catch_exception (uiout, wrapped_read_command_file, &args, | |
1312 | RETURN_MASK_ERROR); | |
1313 | switch (e.reason) | |
1314 | { | |
1315 | case 0: | |
1316 | break; | |
1317 | case RETURN_ERROR: | |
1318 | /* Re-throw the error, but with the file name information | |
1319 | prepended. */ | |
109c3e39 AC |
1320 | throw_error (e.error, |
1321 | _("%s:%d: Error in sourced command file:\n%s"), | |
637537d0 | 1322 | source_file_name, source_line_number, e.message); |
17d92a02 | 1323 | default: |
e2e0b3e5 | 1324 | internal_error (__FILE__, __LINE__, _("bad reason")); |
17d92a02 AC |
1325 | } |
1326 | } | |
d318976c FN |
1327 | |
1328 | do_cleanups (old_cleanups); | |
1329 | } | |
1330 | ||
1331 | void | |
1332 | show_user_1 (struct cmd_list_element *c, struct ui_file *stream) | |
1333 | { | |
d5b5ac79 | 1334 | struct command_line *cmdlines; |
d318976c FN |
1335 | |
1336 | cmdlines = c->user_commands; | |
1337 | if (!cmdlines) | |
1338 | return; | |
1339 | fputs_filtered ("User command ", stream); | |
1340 | fputs_filtered (c->name, stream); | |
1341 | fputs_filtered (":\n", stream); | |
1342 | ||
d318976c FN |
1343 | print_command_lines (uiout, cmdlines, 1); |
1344 | fputs_filtered ("\n", stream); | |
d318976c FN |
1345 | } |
1346 |