Commit | Line | Data |
---|---|---|
c906108c SS |
1 | /* Handle lists of commands, their decoding and documentation, for GDB. |
2 | Copyright 1986, 1989, 1990, 1991, 1998 Free Software Foundation, Inc. | |
3 | ||
4 | This program is free software; you can redistribute it and/or modify | |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 2 of the License, or | |
7 | (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
15 | along with this program; if not, write to the Free Software | |
16 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
17 | ||
18 | #include "defs.h" | |
19 | #include "gdbcmd.h" | |
20 | #include "symtab.h" | |
21 | #include "value.h" | |
22 | #include <ctype.h> | |
23 | #include "gdb_string.h" | |
24 | #ifdef HAVE_UNISTD_H | |
25 | #include <unistd.h> | |
26 | #endif | |
27 | ||
28 | #ifdef HAVE_WAIT_H | |
29 | # include <wait.h> | |
30 | #else | |
31 | # ifdef HAVE_SYS_WAIT_H | |
32 | # include <sys/wait.h> | |
33 | # endif | |
34 | #endif | |
35 | ||
36 | #include "wait.h" | |
37 | ||
38 | /* Prototypes for local functions */ | |
39 | ||
40 | static void undef_cmd_error PARAMS ((char *, char *)); | |
41 | ||
42 | static void show_user PARAMS ((char *, int)); | |
43 | ||
44 | static void show_user_1 PARAMS ((struct cmd_list_element *, GDB_FILE *)); | |
45 | ||
46 | static void make_command PARAMS ((char *, int)); | |
47 | ||
48 | static void shell_escape PARAMS ((char *, int)); | |
49 | ||
50 | static int parse_binary_operation PARAMS ((char *)); | |
51 | ||
52 | static void print_doc_line PARAMS ((GDB_FILE *, char *)); | |
53 | ||
392a587b JM |
54 | static struct cmd_list_element *find_cmd PARAMS ((char *command, |
55 | int len, | |
56 | struct cmd_list_element *clist, | |
57 | int ignore_help_classes, | |
58 | int *nfound)); | |
59 | ||
c906108c SS |
60 | void _initialize_command PARAMS ((void)); |
61 | ||
62 | /* Add element named NAME. | |
63 | CLASS is the top level category into which commands are broken down | |
64 | for "help" purposes. | |
65 | FUN should be the function to execute the command; | |
66 | it will get a character string as argument, with leading | |
67 | and trailing blanks already eliminated. | |
68 | ||
69 | DOC is a documentation string for the command. | |
70 | Its first line should be a complete sentence. | |
71 | It should start with ? for a command that is an abbreviation | |
72 | or with * for a command that most users don't need to know about. | |
73 | ||
74 | Add this command to command list *LIST. | |
75 | ||
76 | Returns a pointer to the added command (not necessarily the head | |
77 | of *LIST). */ | |
78 | ||
79 | struct cmd_list_element * | |
80 | add_cmd (name, class, fun, doc, list) | |
81 | char *name; | |
82 | enum command_class class; | |
83 | void (*fun) PARAMS ((char *, int)); | |
84 | char *doc; | |
85 | struct cmd_list_element **list; | |
86 | { | |
87 | register struct cmd_list_element *c | |
88 | = (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); | |
89 | struct cmd_list_element *p; | |
90 | ||
91 | delete_cmd (name, list); | |
92 | ||
93 | if (*list == NULL || STRCMP ((*list)->name, name) >= 0) | |
94 | { | |
95 | c->next = *list; | |
96 | *list = c; | |
97 | } | |
98 | else | |
99 | { | |
100 | p = *list; | |
101 | while (p->next && STRCMP (p->next->name, name) <= 0) | |
102 | { | |
103 | p = p->next; | |
104 | } | |
105 | c->next = p->next; | |
106 | p->next = c; | |
107 | } | |
108 | ||
109 | c->name = name; | |
110 | c->class = class; | |
111 | c->function.cfunc = fun; | |
112 | c->doc = doc; | |
113 | c->hook = NULL; | |
114 | c->prefixlist = NULL; | |
115 | c->prefixname = NULL; | |
116 | c->allow_unknown = 0; | |
117 | c->abbrev_flag = 0; | |
118 | c->completer = make_symbol_completion_list; | |
119 | c->type = not_set_cmd; | |
120 | c->var = NULL; | |
121 | c->var_type = var_boolean; | |
122 | c->enums = NULL; | |
123 | c->user_commands = NULL; | |
124 | c->hookee = NULL; | |
125 | c->cmd_pointer = NULL; | |
126 | ||
127 | return c; | |
128 | } | |
129 | ||
130 | /* Same as above, except that the abbrev_flag is set. */ | |
131 | ||
132 | #if 0 /* Currently unused */ | |
133 | ||
134 | struct cmd_list_element * | |
135 | add_abbrev_cmd (name, class, fun, doc, list) | |
136 | char *name; | |
137 | enum command_class class; | |
138 | void (*fun) PARAMS ((char *, int)); | |
139 | char *doc; | |
140 | struct cmd_list_element **list; | |
141 | { | |
142 | register struct cmd_list_element *c | |
143 | = add_cmd (name, class, fun, doc, list); | |
144 | ||
145 | c->abbrev_flag = 1; | |
146 | return c; | |
147 | } | |
148 | ||
149 | #endif | |
150 | ||
151 | struct cmd_list_element * | |
152 | add_alias_cmd (name, oldname, class, abbrev_flag, list) | |
153 | char *name; | |
154 | char *oldname; | |
155 | enum command_class class; | |
156 | int abbrev_flag; | |
157 | struct cmd_list_element **list; | |
158 | { | |
159 | /* Must do this since lookup_cmd tries to side-effect its first arg */ | |
160 | char *copied_name; | |
161 | register struct cmd_list_element *old; | |
162 | register struct cmd_list_element *c; | |
163 | copied_name = (char *) alloca (strlen (oldname) + 1); | |
164 | strcpy (copied_name, oldname); | |
165 | old = lookup_cmd (&copied_name, *list, "", 1, 1); | |
166 | ||
167 | if (old == 0) | |
168 | { | |
169 | delete_cmd (name, list); | |
170 | return 0; | |
171 | } | |
172 | ||
173 | c = add_cmd (name, class, old->function.cfunc, old->doc, list); | |
174 | c->prefixlist = old->prefixlist; | |
175 | c->prefixname = old->prefixname; | |
176 | c->allow_unknown = old->allow_unknown; | |
177 | c->abbrev_flag = abbrev_flag; | |
178 | c->cmd_pointer = old; | |
179 | return c; | |
180 | } | |
181 | ||
182 | /* Like add_cmd but adds an element for a command prefix: | |
183 | a name that should be followed by a subcommand to be looked up | |
184 | in another command list. PREFIXLIST should be the address | |
185 | of the variable containing that list. */ | |
186 | ||
187 | struct cmd_list_element * | |
188 | add_prefix_cmd (name, class, fun, doc, prefixlist, prefixname, | |
189 | allow_unknown, list) | |
190 | char *name; | |
191 | enum command_class class; | |
192 | void (*fun) PARAMS ((char *, int)); | |
193 | char *doc; | |
194 | struct cmd_list_element **prefixlist; | |
195 | char *prefixname; | |
196 | int allow_unknown; | |
197 | struct cmd_list_element **list; | |
198 | { | |
199 | register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); | |
200 | c->prefixlist = prefixlist; | |
201 | c->prefixname = prefixname; | |
202 | c->allow_unknown = allow_unknown; | |
203 | return c; | |
204 | } | |
205 | ||
206 | /* Like add_prefix_cmd but sets the abbrev_flag on the new command. */ | |
207 | ||
208 | struct cmd_list_element * | |
209 | add_abbrev_prefix_cmd (name, class, fun, doc, prefixlist, prefixname, | |
210 | allow_unknown, list) | |
211 | char *name; | |
212 | enum command_class class; | |
213 | void (*fun) PARAMS ((char *, int)); | |
214 | char *doc; | |
215 | struct cmd_list_element **prefixlist; | |
216 | char *prefixname; | |
217 | int allow_unknown; | |
218 | struct cmd_list_element **list; | |
219 | { | |
220 | register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); | |
221 | c->prefixlist = prefixlist; | |
222 | c->prefixname = prefixname; | |
223 | c->allow_unknown = allow_unknown; | |
224 | c->abbrev_flag = 1; | |
225 | return c; | |
226 | } | |
227 | ||
228 | /* This is an empty "cfunc". */ | |
229 | void | |
230 | not_just_help_class_command (args, from_tty) | |
231 | char *args; | |
232 | int from_tty; | |
233 | { | |
234 | } | |
235 | ||
236 | /* This is an empty "sfunc". */ | |
237 | static void empty_sfunc PARAMS ((char *, int, struct cmd_list_element *)); | |
238 | ||
239 | static void | |
240 | empty_sfunc (args, from_tty, c) | |
241 | char *args; | |
242 | int from_tty; | |
243 | struct cmd_list_element *c; | |
244 | { | |
245 | } | |
246 | ||
247 | /* Add element named NAME to command list LIST (the list for set | |
248 | or some sublist thereof). | |
249 | CLASS is as in add_cmd. | |
250 | VAR_TYPE is the kind of thing we are setting. | |
251 | VAR is address of the variable being controlled by this command. | |
252 | DOC is the documentation string. */ | |
253 | ||
254 | struct cmd_list_element * | |
255 | add_set_cmd (name, class, var_type, var, doc, list) | |
256 | char *name; | |
257 | enum command_class class; | |
258 | var_types var_type; | |
259 | char *var; | |
260 | char *doc; | |
261 | struct cmd_list_element **list; | |
262 | { | |
263 | struct cmd_list_element *c | |
264 | = add_cmd (name, class, NO_FUNCTION, doc, list); | |
265 | ||
266 | c->type = set_cmd; | |
267 | c->var_type = var_type; | |
268 | c->var = var; | |
269 | /* This needs to be something besides NO_FUNCTION so that this isn't | |
270 | treated as a help class. */ | |
271 | c->function.sfunc = empty_sfunc; | |
272 | return c; | |
273 | } | |
274 | ||
275 | /* Add element named NAME to command list LIST (the list for set | |
276 | or some sublist thereof). | |
277 | CLASS is as in add_cmd. | |
278 | ENUMLIST is a list of strings which may follow NAME. | |
279 | VAR is address of the variable which will contain the matching string | |
280 | (from ENUMLIST). | |
281 | DOC is the documentation string. */ | |
282 | ||
283 | struct cmd_list_element * | |
284 | add_set_enum_cmd (name, class, enumlist, var, doc, list) | |
285 | char *name; | |
286 | enum command_class class; | |
287 | char *enumlist[]; | |
288 | char *var; | |
289 | char *doc; | |
290 | struct cmd_list_element **list; | |
291 | { | |
292 | struct cmd_list_element *c | |
293 | = add_set_cmd (name, class, var_enum, var, doc, list); | |
294 | c->enums = enumlist; | |
295 | ||
296 | return c; | |
297 | } | |
298 | ||
299 | /* Where SETCMD has already been added, add the corresponding show | |
300 | command to LIST and return a pointer to the added command (not | |
301 | necessarily the head of LIST). */ | |
302 | struct cmd_list_element * | |
303 | add_show_from_set (setcmd, list) | |
304 | struct cmd_list_element *setcmd; | |
305 | struct cmd_list_element **list; | |
306 | { | |
307 | struct cmd_list_element *showcmd = | |
308 | (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); | |
309 | struct cmd_list_element *p; | |
310 | ||
311 | memcpy (showcmd, setcmd, sizeof (struct cmd_list_element)); | |
312 | delete_cmd (showcmd->name, list); | |
313 | showcmd->type = show_cmd; | |
314 | ||
315 | /* Replace "set " at start of docstring with "show ". */ | |
316 | if (setcmd->doc[0] == 'S' && setcmd->doc[1] == 'e' | |
317 | && setcmd->doc[2] == 't' && setcmd->doc[3] == ' ') | |
318 | showcmd->doc = concat ("Show ", setcmd->doc + 4, NULL); | |
319 | else | |
320 | fprintf_unfiltered (gdb_stderr, "GDB internal error: Bad docstring for set command\n"); | |
321 | ||
322 | if (*list == NULL || STRCMP ((*list)->name, showcmd->name) >= 0) | |
323 | { | |
324 | showcmd->next = *list; | |
325 | *list = showcmd; | |
326 | } | |
327 | else | |
328 | { | |
329 | p = *list; | |
330 | while (p->next && STRCMP (p->next->name, showcmd->name) <= 0) | |
331 | { | |
332 | p = p->next; | |
333 | } | |
334 | showcmd->next = p->next; | |
335 | p->next = showcmd; | |
336 | } | |
337 | ||
338 | return showcmd; | |
339 | } | |
340 | ||
341 | /* Remove the command named NAME from the command list. */ | |
342 | ||
343 | void | |
344 | delete_cmd (name, list) | |
345 | char *name; | |
346 | struct cmd_list_element **list; | |
347 | { | |
348 | register struct cmd_list_element *c; | |
349 | struct cmd_list_element *p; | |
350 | ||
351 | while (*list && STREQ ((*list)->name, name)) | |
352 | { | |
353 | if ((*list)->hookee) | |
354 | (*list)->hookee->hook = 0; /* Hook slips out of its mouth */ | |
355 | p = (*list)->next; | |
356 | free ((PTR)*list); | |
357 | *list = p; | |
358 | } | |
359 | ||
360 | if (*list) | |
361 | for (c = *list; c->next;) | |
362 | { | |
363 | if (STREQ (c->next->name, name)) | |
364 | { | |
365 | if (c->next->hookee) | |
366 | c->next->hookee->hook = 0; /* hooked cmd gets away. */ | |
367 | p = c->next->next; | |
368 | free ((PTR)c->next); | |
369 | c->next = p; | |
370 | } | |
371 | else | |
372 | c = c->next; | |
373 | } | |
374 | } | |
375 | ||
376 | /* This command really has to deal with two things: | |
377 | * 1) I want documentation on *this string* (usually called by | |
378 | * "help commandname"). | |
379 | * 2) I want documentation on *this list* (usually called by | |
380 | * giving a command that requires subcommands. Also called by saying | |
381 | * just "help".) | |
382 | * | |
383 | * I am going to split this into two seperate comamnds, help_cmd and | |
384 | * help_list. | |
385 | */ | |
386 | ||
387 | void | |
388 | help_cmd (command, stream) | |
389 | char *command; | |
390 | GDB_FILE *stream; | |
391 | { | |
392 | struct cmd_list_element *c; | |
393 | extern struct cmd_list_element *cmdlist; | |
394 | ||
395 | if (!command) | |
396 | { | |
397 | help_list (cmdlist, "", all_classes, stream); | |
398 | return; | |
399 | } | |
400 | ||
401 | c = lookup_cmd (&command, cmdlist, "", 0, 0); | |
402 | ||
403 | if (c == 0) | |
404 | return; | |
405 | ||
406 | /* There are three cases here. | |
407 | If c->prefixlist is nonzero, we have a prefix command. | |
408 | Print its documentation, then list its subcommands. | |
409 | ||
410 | If c->function is nonzero, we really have a command. | |
411 | Print its documentation and return. | |
412 | ||
413 | If c->function is zero, we have a class name. | |
414 | Print its documentation (as if it were a command) | |
415 | and then set class to the number of this class | |
416 | so that the commands in the class will be listed. */ | |
417 | ||
418 | fputs_filtered (c->doc, stream); | |
419 | fputs_filtered ("\n", stream); | |
420 | ||
421 | if (c->prefixlist == 0 && c->function.cfunc != NULL) | |
422 | return; | |
423 | fprintf_filtered (stream, "\n"); | |
424 | ||
425 | /* If this is a prefix command, print it's subcommands */ | |
426 | if (c->prefixlist) | |
427 | help_list (*c->prefixlist, c->prefixname, all_commands, stream); | |
428 | ||
429 | /* If this is a class name, print all of the commands in the class */ | |
430 | if (c->function.cfunc == NULL) | |
431 | help_list (cmdlist, "", c->class, stream); | |
432 | ||
433 | if (c->hook) | |
434 | fprintf_filtered (stream, "\nThis command has a hook defined: %s\n", | |
435 | c->hook->name); | |
436 | } | |
437 | ||
438 | /* | |
439 | * Get a specific kind of help on a command list. | |
440 | * | |
441 | * LIST is the list. | |
442 | * CMDTYPE is the prefix to use in the title string. | |
443 | * CLASS is the class with which to list the nodes of this list (see | |
444 | * documentation for help_cmd_list below), As usual, ALL_COMMANDS for | |
445 | * everything, ALL_CLASSES for just classes, and non-negative for only things | |
446 | * in a specific class. | |
447 | * and STREAM is the output stream on which to print things. | |
448 | * If you call this routine with a class >= 0, it recurses. | |
449 | */ | |
450 | void | |
451 | help_list (list, cmdtype, class, stream) | |
452 | struct cmd_list_element *list; | |
453 | char *cmdtype; | |
454 | enum command_class class; | |
455 | GDB_FILE *stream; | |
456 | { | |
457 | int len; | |
458 | char *cmdtype1, *cmdtype2; | |
459 | ||
460 | /* If CMDTYPE is "foo ", CMDTYPE1 gets " foo" and CMDTYPE2 gets "foo sub" */ | |
461 | len = strlen (cmdtype); | |
462 | cmdtype1 = (char *) alloca (len + 1); | |
463 | cmdtype1[0] = 0; | |
464 | cmdtype2 = (char *) alloca (len + 4); | |
465 | cmdtype2[0] = 0; | |
466 | if (len) | |
467 | { | |
468 | cmdtype1[0] = ' '; | |
469 | strncpy (cmdtype1 + 1, cmdtype, len - 1); | |
470 | cmdtype1[len] = 0; | |
471 | strncpy (cmdtype2, cmdtype, len - 1); | |
472 | strcpy (cmdtype2 + len - 1, " sub"); | |
473 | } | |
474 | ||
475 | if (class == all_classes) | |
476 | fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2); | |
477 | else | |
478 | fprintf_filtered (stream, "List of %scommands:\n\n", cmdtype2); | |
479 | ||
480 | help_cmd_list (list, class, cmdtype, (int)class >= 0, stream); | |
481 | ||
482 | if (class == all_classes) | |
483 | fprintf_filtered (stream, "\n\ | |
484 | Type \"help%s\" followed by a class name for a list of commands in that class.", | |
485 | cmdtype1); | |
486 | ||
487 | fprintf_filtered (stream, "\n\ | |
488 | Type \"help%s\" followed by %scommand name for full documentation.\n\ | |
489 | Command name abbreviations are allowed if unambiguous.\n", | |
490 | cmdtype1, cmdtype2); | |
491 | } | |
492 | ||
493 | /* Print only the first line of STR on STREAM. */ | |
494 | static void | |
495 | print_doc_line (stream, str) | |
496 | GDB_FILE *stream; | |
497 | char *str; | |
498 | { | |
499 | static char *line_buffer = 0; | |
500 | static int line_size; | |
501 | register char *p; | |
502 | ||
503 | if (!line_buffer) | |
504 | { | |
505 | line_size = 80; | |
506 | line_buffer = (char *) xmalloc (line_size); | |
507 | } | |
508 | ||
509 | p = str; | |
510 | while (*p && *p != '\n' && *p != '.' && *p != ',') | |
511 | p++; | |
512 | if (p - str > line_size - 1) | |
513 | { | |
514 | line_size = p - str + 1; | |
515 | free ((PTR)line_buffer); | |
516 | line_buffer = (char *) xmalloc (line_size); | |
517 | } | |
518 | strncpy (line_buffer, str, p - str); | |
519 | line_buffer[p - str] = '\0'; | |
520 | if (islower (line_buffer[0])) | |
521 | line_buffer[0] = toupper (line_buffer[0]); | |
522 | fputs_filtered (line_buffer, stream); | |
523 | } | |
524 | ||
525 | /* | |
526 | * Implement a help command on command list LIST. | |
527 | * RECURSE should be non-zero if this should be done recursively on | |
528 | * all sublists of LIST. | |
529 | * PREFIX is the prefix to print before each command name. | |
530 | * STREAM is the stream upon which the output should be written. | |
531 | * CLASS should be: | |
532 | * A non-negative class number to list only commands in that | |
533 | * class. | |
534 | * ALL_COMMANDS to list all commands in list. | |
535 | * ALL_CLASSES to list all classes in list. | |
536 | * | |
537 | * Note that RECURSE will be active on *all* sublists, not just the | |
538 | * ones selected by the criteria above (ie. the selection mechanism | |
539 | * is at the low level, not the high-level). | |
540 | */ | |
541 | void | |
542 | help_cmd_list (list, class, prefix, recurse, stream) | |
543 | struct cmd_list_element *list; | |
544 | enum command_class class; | |
545 | char *prefix; | |
546 | int recurse; | |
547 | GDB_FILE *stream; | |
548 | { | |
549 | register struct cmd_list_element *c; | |
550 | ||
551 | for (c = list; c; c = c->next) | |
552 | { | |
553 | if (c->abbrev_flag == 0 && | |
554 | (class == all_commands | |
555 | || (class == all_classes && c->function.cfunc == NULL) | |
556 | || (class == c->class && c->function.cfunc != NULL))) | |
557 | { | |
558 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
559 | print_doc_line (stream, c->doc); | |
560 | fputs_filtered ("\n", stream); | |
561 | } | |
562 | if (recurse | |
563 | && c->prefixlist != 0 | |
564 | && c->abbrev_flag == 0) | |
565 | help_cmd_list (*c->prefixlist, class, c->prefixname, 1, stream); | |
566 | } | |
567 | } | |
568 | ||
569 | \f | |
570 | /* Search the input clist for 'command'. Return the command if | |
571 | found (or NULL if not), and return the number of commands | |
572 | found in nfound */ | |
573 | ||
574 | static struct cmd_list_element * | |
575 | find_cmd(command, len, clist, ignore_help_classes, nfound) | |
576 | char *command; | |
392a587b | 577 | int len; |
c906108c SS |
578 | struct cmd_list_element *clist; |
579 | int ignore_help_classes; | |
580 | int *nfound; | |
581 | { | |
582 | struct cmd_list_element *found, *c; | |
583 | ||
584 | found = (struct cmd_list_element *)NULL; | |
585 | *nfound = 0; | |
586 | for (c = clist; c; c = c->next) | |
587 | if (!strncmp (command, c->name, len) | |
588 | && (!ignore_help_classes || c->function.cfunc)) | |
589 | { | |
590 | found = c; | |
591 | (*nfound)++; | |
592 | if (c->name[len] == '\0') | |
593 | { | |
594 | *nfound = 1; | |
595 | break; | |
596 | } | |
597 | } | |
598 | return found; | |
599 | } | |
600 | ||
601 | /* This routine takes a line of TEXT and a CLIST in which to start the | |
602 | lookup. When it returns it will have incremented the text pointer past | |
603 | the section of text it matched, set *RESULT_LIST to point to the list in | |
604 | which the last word was matched, and will return a pointer to the cmd | |
605 | list element which the text matches. It will return NULL if no match at | |
606 | all was possible. It will return -1 (cast appropriately, ick) if ambigous | |
607 | matches are possible; in this case *RESULT_LIST will be set to point to | |
608 | the list in which there are ambiguous choices (and *TEXT will be set to | |
609 | the ambiguous text string). | |
610 | ||
611 | If the located command was an abbreviation, this routine returns the base | |
612 | command of the abbreviation. | |
613 | ||
614 | It does no error reporting whatsoever; control will always return | |
615 | to the superior routine. | |
616 | ||
617 | In the case of an ambiguous return (-1), *RESULT_LIST will be set to point | |
618 | at the prefix_command (ie. the best match) *or* (special case) will be NULL | |
619 | if no prefix command was ever found. For example, in the case of "info a", | |
620 | "info" matches without ambiguity, but "a" could be "args" or "address", so | |
621 | *RESULT_LIST is set to the cmd_list_element for "info". So in this case | |
622 | RESULT_LIST should not be interpeted as a pointer to the beginning of a | |
623 | list; it simply points to a specific command. In the case of an ambiguous | |
624 | return *TEXT is advanced past the last non-ambiguous prefix (e.g. | |
625 | "info t" can be "info types" or "info target"; upon return *TEXT has been | |
626 | advanced past "info "). | |
627 | ||
628 | If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise | |
629 | affect the operation). | |
630 | ||
631 | This routine does *not* modify the text pointed to by TEXT. | |
632 | ||
633 | If IGNORE_HELP_CLASSES is nonzero, ignore any command list elements which | |
634 | are actually help classes rather than commands (i.e. the function field of | |
635 | the struct cmd_list_element is NULL). */ | |
636 | ||
637 | struct cmd_list_element * | |
638 | lookup_cmd_1 (text, clist, result_list, ignore_help_classes) | |
639 | char **text; | |
640 | struct cmd_list_element *clist, **result_list; | |
641 | int ignore_help_classes; | |
642 | { | |
643 | char *p, *command; | |
644 | int len, tmp, nfound; | |
645 | struct cmd_list_element *found, *c; | |
646 | ||
647 | while (**text == ' ' || **text == '\t') | |
648 | (*text)++; | |
649 | ||
650 | /* Treating underscores as part of command words is important | |
651 | so that "set args_foo()" doesn't get interpreted as | |
652 | "set args _foo()". */ | |
653 | for (p = *text; | |
654 | *p && (isalnum(*p) || *p == '-' || *p == '_' || | |
655 | (tui_version && | |
656 | (*p == '+' || *p == '<' || *p == '>' || *p == '$')) || | |
657 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))); | |
658 | p++) | |
659 | ; | |
660 | ||
661 | /* If nothing but whitespace, return 0. */ | |
662 | if (p == *text) | |
663 | return 0; | |
664 | ||
665 | len = p - *text; | |
666 | ||
667 | /* *text and p now bracket the first command word to lookup (and | |
668 | it's length is len). We copy this into a local temporary */ | |
669 | ||
670 | ||
671 | command = (char *) alloca (len + 1); | |
672 | for (tmp = 0; tmp < len; tmp++) | |
673 | { | |
674 | char x = (*text)[tmp]; | |
675 | command[tmp] = x; | |
676 | } | |
677 | command[len] = '\0'; | |
678 | ||
679 | /* Look it up. */ | |
680 | found = 0; | |
681 | nfound = 0; | |
682 | found = find_cmd(command, len, clist, ignore_help_classes, &nfound); | |
683 | ||
684 | /* | |
685 | ** We didn't find the command in the entered case, so lower case it | |
686 | ** and search again. | |
687 | */ | |
688 | if (!found || nfound == 0) | |
689 | { | |
690 | for (tmp = 0; tmp < len; tmp++) | |
691 | { | |
692 | char x = command[tmp]; | |
693 | command[tmp] = isupper(x) ? tolower(x) : x; | |
694 | } | |
695 | found = find_cmd(command, len, clist, ignore_help_classes, &nfound); | |
696 | } | |
697 | ||
698 | /* If nothing matches, we have a simple failure. */ | |
699 | if (nfound == 0) | |
700 | return 0; | |
701 | ||
702 | if (nfound > 1) | |
703 | { | |
704 | if (result_list != NULL) | |
705 | /* Will be modified in calling routine | |
706 | if we know what the prefix command is. */ | |
707 | *result_list = 0; | |
708 | return (struct cmd_list_element *) -1; /* Ambiguous. */ | |
709 | } | |
710 | ||
711 | /* We've matched something on this list. Move text pointer forward. */ | |
712 | ||
713 | *text = p; | |
714 | ||
715 | /* If this was an abbreviation, use the base command instead. */ | |
716 | ||
717 | if (found->cmd_pointer) | |
718 | found = found->cmd_pointer; | |
719 | ||
720 | /* If we found a prefix command, keep looking. */ | |
721 | ||
722 | if (found->prefixlist) | |
723 | { | |
724 | c = lookup_cmd_1 (text, *found->prefixlist, result_list, | |
725 | ignore_help_classes); | |
726 | if (!c) | |
727 | { | |
728 | /* Didn't find anything; this is as far as we got. */ | |
729 | if (result_list != NULL) | |
730 | *result_list = clist; | |
731 | return found; | |
732 | } | |
733 | else if (c == (struct cmd_list_element *) -1) | |
734 | { | |
735 | /* We've gotten this far properly, but the next step | |
736 | is ambiguous. We need to set the result list to the best | |
737 | we've found (if an inferior hasn't already set it). */ | |
738 | if (result_list != NULL) | |
739 | if (!*result_list) | |
740 | /* This used to say *result_list = *found->prefixlist | |
741 | If that was correct, need to modify the documentation | |
742 | at the top of this function to clarify what is supposed | |
743 | to be going on. */ | |
744 | *result_list = found; | |
745 | return c; | |
746 | } | |
747 | else | |
748 | { | |
749 | /* We matched! */ | |
750 | return c; | |
751 | } | |
752 | } | |
753 | else | |
754 | { | |
755 | if (result_list != NULL) | |
756 | *result_list = clist; | |
757 | return found; | |
758 | } | |
759 | } | |
760 | ||
761 | /* All this hair to move the space to the front of cmdtype */ | |
762 | ||
763 | static void | |
764 | undef_cmd_error (cmdtype, q) | |
765 | char *cmdtype, *q; | |
766 | { | |
767 | error ("Undefined %scommand: \"%s\". Try \"help%s%.*s\".", | |
768 | cmdtype, | |
769 | q, | |
770 | *cmdtype? " ": "", | |
771 | strlen(cmdtype)-1, | |
772 | cmdtype); | |
773 | } | |
774 | ||
775 | /* Look up the contents of *LINE as a command in the command list LIST. | |
776 | LIST is a chain of struct cmd_list_element's. | |
777 | If it is found, return the struct cmd_list_element for that command | |
778 | and update *LINE to point after the command name, at the first argument. | |
779 | If not found, call error if ALLOW_UNKNOWN is zero | |
780 | otherwise (or if error returns) return zero. | |
781 | Call error if specified command is ambiguous, | |
782 | unless ALLOW_UNKNOWN is negative. | |
783 | CMDTYPE precedes the word "command" in the error message. | |
784 | ||
785 | If INGNORE_HELP_CLASSES is nonzero, ignore any command list | |
786 | elements which are actually help classes rather than commands (i.e. | |
787 | the function field of the struct cmd_list_element is 0). */ | |
788 | ||
789 | struct cmd_list_element * | |
790 | lookup_cmd (line, list, cmdtype, allow_unknown, ignore_help_classes) | |
791 | char **line; | |
792 | struct cmd_list_element *list; | |
793 | char *cmdtype; | |
794 | int allow_unknown; | |
795 | int ignore_help_classes; | |
796 | { | |
797 | struct cmd_list_element *last_list = 0; | |
798 | struct cmd_list_element *c = | |
799 | lookup_cmd_1 (line, list, &last_list, ignore_help_classes); | |
800 | #if 0 | |
801 | /* This is wrong for complete_command. */ | |
802 | char *ptr = (*line) + strlen (*line) - 1; | |
803 | ||
804 | /* Clear off trailing whitespace. */ | |
805 | while (ptr >= *line && (*ptr == ' ' || *ptr == '\t')) | |
806 | ptr--; | |
807 | *(ptr + 1) = '\0'; | |
808 | #endif | |
809 | ||
810 | if (!c) | |
811 | { | |
812 | if (!allow_unknown) | |
813 | { | |
814 | if (!*line) | |
815 | error ("Lack of needed %scommand", cmdtype); | |
816 | else | |
817 | { | |
818 | char *p = *line, *q; | |
819 | ||
820 | while (isalnum(*p) || *p == '-') | |
821 | p++; | |
822 | ||
823 | q = (char *) alloca (p - *line + 1); | |
824 | strncpy (q, *line, p - *line); | |
825 | q[p - *line] = '\0'; | |
826 | undef_cmd_error (cmdtype, q); | |
827 | } | |
828 | } | |
829 | else | |
830 | return 0; | |
831 | } | |
832 | else if (c == (struct cmd_list_element *) -1) | |
833 | { | |
834 | /* Ambigous. Local values should be off prefixlist or called | |
835 | values. */ | |
836 | int local_allow_unknown = (last_list ? last_list->allow_unknown : | |
837 | allow_unknown); | |
838 | char *local_cmdtype = last_list ? last_list->prefixname : cmdtype; | |
839 | struct cmd_list_element *local_list = | |
840 | (last_list ? *(last_list->prefixlist) : list); | |
841 | ||
842 | if (local_allow_unknown < 0) | |
843 | { | |
844 | if (last_list) | |
845 | return last_list; /* Found something. */ | |
846 | else | |
847 | return 0; /* Found nothing. */ | |
848 | } | |
849 | else | |
850 | { | |
851 | /* Report as error. */ | |
852 | int amb_len; | |
853 | char ambbuf[100]; | |
854 | ||
855 | for (amb_len = 0; | |
856 | ((*line)[amb_len] && (*line)[amb_len] != ' ' | |
857 | && (*line)[amb_len] != '\t'); | |
858 | amb_len++) | |
859 | ; | |
860 | ||
861 | ambbuf[0] = 0; | |
862 | for (c = local_list; c; c = c->next) | |
863 | if (!strncmp (*line, c->name, amb_len)) | |
864 | { | |
865 | if (strlen (ambbuf) + strlen (c->name) + 6 < (int)sizeof ambbuf) | |
866 | { | |
867 | if (strlen (ambbuf)) | |
868 | strcat (ambbuf, ", "); | |
869 | strcat (ambbuf, c->name); | |
870 | } | |
871 | else | |
872 | { | |
873 | strcat (ambbuf, ".."); | |
874 | break; | |
875 | } | |
876 | } | |
877 | error ("Ambiguous %scommand \"%s\": %s.", local_cmdtype, | |
878 | *line, ambbuf); | |
879 | return 0; /* lint */ | |
880 | } | |
881 | } | |
882 | else | |
883 | { | |
884 | /* We've got something. It may still not be what the caller | |
885 | wants (if this command *needs* a subcommand). */ | |
886 | while (**line == ' ' || **line == '\t') | |
887 | (*line)++; | |
888 | ||
889 | if (c->prefixlist && **line && !c->allow_unknown) | |
890 | undef_cmd_error (c->prefixname, *line); | |
891 | ||
892 | /* Seems to be what he wants. Return it. */ | |
893 | return c; | |
894 | } | |
895 | return 0; | |
896 | } | |
897 | ||
898 | #if 0 | |
899 | /* Look up the contents of *LINE as a command in the command list LIST. | |
900 | LIST is a chain of struct cmd_list_element's. | |
901 | If it is found, return the struct cmd_list_element for that command | |
902 | and update *LINE to point after the command name, at the first argument. | |
903 | If not found, call error if ALLOW_UNKNOWN is zero | |
904 | otherwise (or if error returns) return zero. | |
905 | Call error if specified command is ambiguous, | |
906 | unless ALLOW_UNKNOWN is negative. | |
907 | CMDTYPE precedes the word "command" in the error message. */ | |
908 | ||
909 | struct cmd_list_element * | |
910 | lookup_cmd (line, list, cmdtype, allow_unknown) | |
911 | char **line; | |
912 | struct cmd_list_element *list; | |
913 | char *cmdtype; | |
914 | int allow_unknown; | |
915 | { | |
916 | register char *p; | |
917 | register struct cmd_list_element *c, *found; | |
918 | int nfound; | |
919 | char ambbuf[100]; | |
920 | char *processed_cmd; | |
921 | int i, cmd_len; | |
922 | ||
923 | /* Skip leading whitespace. */ | |
924 | ||
925 | while (**line == ' ' || **line == '\t') | |
926 | (*line)++; | |
927 | ||
928 | /* Clear out trailing whitespace. */ | |
929 | ||
930 | p = *line + strlen (*line); | |
931 | while (p != *line && (p[-1] == ' ' || p[-1] == '\t')) | |
932 | p--; | |
933 | *p = 0; | |
934 | ||
935 | /* Find end of command name. */ | |
936 | ||
937 | p = *line; | |
938 | while (*p == '-' || isalnum(*p)) | |
939 | p++; | |
940 | ||
941 | /* Look up the command name. | |
942 | If exact match, keep that. | |
943 | Otherwise, take command abbreviated, if unique. Note that (in my | |
944 | opinion) a null string does *not* indicate ambiguity; simply the | |
945 | end of the argument. */ | |
946 | ||
947 | if (p == *line) | |
948 | { | |
949 | if (!allow_unknown) | |
950 | error ("Lack of needed %scommand", cmdtype); | |
951 | return 0; | |
952 | } | |
953 | ||
954 | /* Copy over to a local buffer, converting to lowercase on the way. | |
955 | This is in case the command being parsed is a subcommand which | |
956 | doesn't match anything, and that's ok. We want the original | |
957 | untouched for the routine of the original command. */ | |
958 | ||
959 | processed_cmd = (char *) alloca (p - *line + 1); | |
960 | for (cmd_len = 0; cmd_len < p - *line; cmd_len++) | |
961 | { | |
962 | char x = (*line)[cmd_len]; | |
963 | if (isupper(x)) | |
964 | processed_cmd[cmd_len] = tolower(x); | |
965 | else | |
966 | processed_cmd[cmd_len] = x; | |
967 | } | |
968 | processed_cmd[cmd_len] = '\0'; | |
969 | ||
970 | /* Check all possibilities in the current command list. */ | |
971 | found = 0; | |
972 | nfound = 0; | |
973 | for (c = list; c; c = c->next) | |
974 | { | |
975 | if (!strncmp (processed_cmd, c->name, cmd_len)) | |
976 | { | |
977 | found = c; | |
978 | nfound++; | |
979 | if (c->name[cmd_len] == 0) | |
980 | { | |
981 | nfound = 1; | |
982 | break; | |
983 | } | |
984 | } | |
985 | } | |
986 | ||
987 | /* Report error for undefined command name. */ | |
988 | ||
989 | if (nfound != 1) | |
990 | { | |
991 | if (nfound > 1 && allow_unknown >= 0) | |
992 | { | |
993 | ambbuf[0] = 0; | |
994 | for (c = list; c; c = c->next) | |
995 | if (!strncmp (processed_cmd, c->name, cmd_len)) | |
996 | { | |
997 | if (strlen (ambbuf) + strlen (c->name) + 6 < sizeof ambbuf) | |
998 | { | |
999 | if (strlen (ambbuf)) | |
1000 | strcat (ambbuf, ", "); | |
1001 | strcat (ambbuf, c->name); | |
1002 | } | |
1003 | else | |
1004 | { | |
1005 | strcat (ambbuf, ".."); | |
1006 | break; | |
1007 | } | |
1008 | } | |
1009 | error ("Ambiguous %scommand \"%s\": %s.", cmdtype, | |
1010 | processed_cmd, ambbuf); | |
1011 | } | |
1012 | else if (!allow_unknown) | |
1013 | error ("Undefined %scommand: \"%s\".", cmdtype, processed_cmd); | |
1014 | return 0; | |
1015 | } | |
1016 | ||
1017 | /* Skip whitespace before the argument. */ | |
1018 | ||
1019 | while (*p == ' ' || *p == '\t') p++; | |
1020 | *line = p; | |
1021 | ||
1022 | if (found->prefixlist && *p) | |
1023 | { | |
1024 | c = lookup_cmd (line, *found->prefixlist, found->prefixname, | |
1025 | found->allow_unknown); | |
1026 | if (c) | |
1027 | return c; | |
1028 | } | |
1029 | ||
1030 | return found; | |
1031 | } | |
1032 | #endif | |
1033 | ||
1034 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
1035 | ||
1036 | /* Return a vector of char pointers which point to the different | |
1037 | possible completions in LIST of TEXT. | |
1038 | ||
1039 | WORD points in the same buffer as TEXT, and completions should be | |
1040 | returned relative to this position. For example, suppose TEXT is "foo" | |
1041 | and we want to complete to "foobar". If WORD is "oo", return | |
1042 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1043 | ||
1044 | char ** | |
1045 | complete_on_cmdlist (list, text, word) | |
1046 | struct cmd_list_element *list; | |
1047 | char *text; | |
1048 | char *word; | |
1049 | { | |
1050 | struct cmd_list_element *ptr; | |
1051 | char **matchlist; | |
1052 | int sizeof_matchlist; | |
1053 | int matches; | |
1054 | int textlen = strlen (text); | |
1055 | ||
1056 | sizeof_matchlist = 10; | |
1057 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1058 | matches = 0; | |
1059 | ||
1060 | for (ptr = list; ptr; ptr = ptr->next) | |
1061 | if (!strncmp (ptr->name, text, textlen) | |
1062 | && !ptr->abbrev_flag | |
1063 | && (ptr->function.cfunc | |
1064 | || ptr->prefixlist)) | |
1065 | { | |
1066 | if (matches == sizeof_matchlist) | |
1067 | { | |
1068 | sizeof_matchlist *= 2; | |
1069 | matchlist = (char **) xrealloc ((char *)matchlist, | |
1070 | (sizeof_matchlist | |
1071 | * sizeof (char *))); | |
1072 | } | |
1073 | ||
1074 | matchlist[matches] = (char *) | |
1075 | xmalloc (strlen (word) + strlen (ptr->name) + 1); | |
1076 | if (word == text) | |
1077 | strcpy (matchlist[matches], ptr->name); | |
1078 | else if (word > text) | |
1079 | { | |
1080 | /* Return some portion of ptr->name. */ | |
1081 | strcpy (matchlist[matches], ptr->name + (word - text)); | |
1082 | } | |
1083 | else | |
1084 | { | |
1085 | /* Return some of text plus ptr->name. */ | |
1086 | strncpy (matchlist[matches], word, text - word); | |
1087 | matchlist[matches][text - word] = '\0'; | |
1088 | strcat (matchlist[matches], ptr->name); | |
1089 | } | |
1090 | ++matches; | |
1091 | } | |
1092 | ||
1093 | if (matches == 0) | |
1094 | { | |
1095 | free ((PTR)matchlist); | |
1096 | matchlist = 0; | |
1097 | } | |
1098 | else | |
1099 | { | |
1100 | matchlist = (char **) xrealloc ((char *)matchlist, ((matches + 1) | |
1101 | * sizeof (char *))); | |
1102 | matchlist[matches] = (char *) 0; | |
1103 | } | |
1104 | ||
1105 | return matchlist; | |
1106 | } | |
1107 | ||
1108 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
1109 | ||
1110 | /* Return a vector of char pointers which point to the different | |
1111 | possible completions in CMD of TEXT. | |
1112 | ||
1113 | WORD points in the same buffer as TEXT, and completions should be | |
1114 | returned relative to this position. For example, suppose TEXT is "foo" | |
1115 | and we want to complete to "foobar". If WORD is "oo", return | |
1116 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1117 | ||
1118 | char ** | |
1119 | complete_on_enum (enumlist, text, word) | |
1120 | char **enumlist; | |
1121 | char *text; | |
1122 | char *word; | |
1123 | { | |
1124 | char **matchlist; | |
1125 | int sizeof_matchlist; | |
1126 | int matches; | |
1127 | int textlen = strlen (text); | |
1128 | int i; | |
1129 | char *name; | |
1130 | ||
1131 | sizeof_matchlist = 10; | |
1132 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1133 | matches = 0; | |
1134 | ||
1135 | for (i = 0; (name = enumlist[i]) != NULL; i++) | |
1136 | if (strncmp (name, text, textlen) == 0) | |
1137 | { | |
1138 | if (matches == sizeof_matchlist) | |
1139 | { | |
1140 | sizeof_matchlist *= 2; | |
1141 | matchlist = (char **) xrealloc ((char *)matchlist, | |
1142 | (sizeof_matchlist | |
1143 | * sizeof (char *))); | |
1144 | } | |
1145 | ||
1146 | matchlist[matches] = (char *) | |
1147 | xmalloc (strlen (word) + strlen (name) + 1); | |
1148 | if (word == text) | |
1149 | strcpy (matchlist[matches], name); | |
1150 | else if (word > text) | |
1151 | { | |
1152 | /* Return some portion of name. */ | |
1153 | strcpy (matchlist[matches], name + (word - text)); | |
1154 | } | |
1155 | else | |
1156 | { | |
1157 | /* Return some of text plus name. */ | |
1158 | strncpy (matchlist[matches], word, text - word); | |
1159 | matchlist[matches][text - word] = '\0'; | |
1160 | strcat (matchlist[matches], name); | |
1161 | } | |
1162 | ++matches; | |
1163 | } | |
1164 | ||
1165 | if (matches == 0) | |
1166 | { | |
1167 | free ((PTR)matchlist); | |
1168 | matchlist = 0; | |
1169 | } | |
1170 | else | |
1171 | { | |
1172 | matchlist = (char **) xrealloc ((char *)matchlist, ((matches + 1) | |
1173 | * sizeof (char *))); | |
1174 | matchlist[matches] = (char *) 0; | |
1175 | } | |
1176 | ||
1177 | return matchlist; | |
1178 | } | |
1179 | ||
1180 | static int | |
1181 | parse_binary_operation (arg) | |
1182 | char *arg; | |
1183 | { | |
1184 | int length; | |
1185 | ||
1186 | if (!arg || !*arg) | |
1187 | return 1; | |
1188 | ||
1189 | length = strlen (arg); | |
1190 | ||
1191 | while (arg[length - 1] == ' ' || arg[length - 1] == '\t') | |
1192 | length--; | |
1193 | ||
1194 | if (!strncmp (arg, "on", length) | |
1195 | || !strncmp (arg, "1", length) | |
1196 | || !strncmp (arg, "yes", length)) | |
1197 | return 1; | |
1198 | else | |
1199 | if (!strncmp (arg, "off", length) | |
1200 | || !strncmp (arg, "0", length) | |
1201 | || !strncmp (arg, "no", length)) | |
1202 | return 0; | |
1203 | else | |
1204 | { | |
1205 | error ("\"on\" or \"off\" expected."); | |
1206 | return 0; | |
1207 | } | |
1208 | } | |
1209 | ||
1210 | /* Do a "set" or "show" command. ARG is NULL if no argument, or the text | |
1211 | of the argument, and FROM_TTY is nonzero if this command is being entered | |
1212 | directly by the user (i.e. these are just like any other | |
1213 | command). C is the command list element for the command. */ | |
1214 | void | |
1215 | do_setshow_command (arg, from_tty, c) | |
1216 | char *arg; | |
1217 | int from_tty; | |
1218 | struct cmd_list_element *c; | |
1219 | { | |
1220 | if (c->type == set_cmd) | |
1221 | { | |
1222 | switch (c->var_type) | |
1223 | { | |
1224 | case var_string: | |
1225 | { | |
1226 | char *new; | |
1227 | char *p; | |
1228 | char *q; | |
1229 | int ch; | |
1230 | ||
1231 | if (arg == NULL) | |
1232 | arg = ""; | |
1233 | new = (char *) xmalloc (strlen (arg) + 2); | |
1234 | p = arg; q = new; | |
1235 | while ((ch = *p++) != '\000') | |
1236 | { | |
1237 | if (ch == '\\') | |
1238 | { | |
1239 | /* \ at end of argument is used after spaces | |
1240 | so they won't be lost. */ | |
1241 | /* This is obsolete now that we no longer strip | |
1242 | trailing whitespace and actually, the backslash | |
1243 | didn't get here in my test, readline or | |
1244 | something did something funky with a backslash | |
1245 | right before a newline. */ | |
1246 | if (*p == 0) | |
1247 | break; | |
1248 | ch = parse_escape (&p); | |
1249 | if (ch == 0) | |
1250 | break; /* C loses */ | |
1251 | else if (ch > 0) | |
1252 | *q++ = ch; | |
1253 | } | |
1254 | else | |
1255 | *q++ = ch; | |
1256 | } | |
1257 | #if 0 | |
1258 | if (*(p - 1) != '\\') | |
1259 | *q++ = ' '; | |
1260 | #endif | |
1261 | *q++ = '\0'; | |
1262 | new = (char *) xrealloc (new, q - new); | |
1263 | if (*(char **)c->var != NULL) | |
1264 | free (*(char **)c->var); | |
1265 | *(char **) c->var = new; | |
1266 | } | |
1267 | break; | |
1268 | case var_string_noescape: | |
1269 | if (arg == NULL) | |
1270 | arg = ""; | |
1271 | if (*(char **)c->var != NULL) | |
1272 | free (*(char **)c->var); | |
1273 | *(char **) c->var = savestring (arg, strlen (arg)); | |
1274 | break; | |
1275 | case var_filename: | |
1276 | if (arg == NULL) | |
1277 | error_no_arg ("filename to set it to."); | |
1278 | if (*(char **)c->var != NULL) | |
1279 | free (*(char **)c->var); | |
1280 | *(char **)c->var = tilde_expand (arg); | |
1281 | break; | |
1282 | case var_boolean: | |
1283 | *(int *) c->var = parse_binary_operation (arg); | |
1284 | break; | |
1285 | case var_uinteger: | |
1286 | if (arg == NULL) | |
1287 | error_no_arg ("integer to set it to."); | |
1288 | *(unsigned int *) c->var = parse_and_eval_address (arg); | |
1289 | if (*(unsigned int *) c->var == 0) | |
1290 | *(unsigned int *) c->var = UINT_MAX; | |
1291 | break; | |
1292 | case var_integer: | |
1293 | { | |
1294 | unsigned int val; | |
1295 | if (arg == NULL) | |
1296 | error_no_arg ("integer to set it to."); | |
1297 | val = parse_and_eval_address (arg); | |
1298 | if (val == 0) | |
1299 | *(int *) c->var = INT_MAX; | |
1300 | else if (val >= INT_MAX) | |
1301 | error ("integer %u out of range", val); | |
1302 | else | |
1303 | *(int *) c->var = val; | |
1304 | break; | |
1305 | } | |
1306 | case var_zinteger: | |
1307 | if (arg == NULL) | |
1308 | error_no_arg ("integer to set it to."); | |
1309 | *(int *) c->var = parse_and_eval_address (arg); | |
1310 | break; | |
1311 | case var_enum: | |
1312 | { | |
1313 | int i; | |
1314 | int len; | |
1315 | int nmatches; | |
1316 | char *match = NULL; | |
1317 | char *p; | |
1318 | ||
1319 | /* if no argument was supplied, print an informative error message */ | |
1320 | if (arg == NULL) | |
1321 | { | |
1322 | char msg[1024]; | |
1323 | strcpy (msg, "Requires an argument. Valid arguments are "); | |
1324 | for (i = 0; c->enums[i]; i++) | |
1325 | { | |
1326 | if (i != 0) | |
1327 | strcat (msg, ", "); | |
1328 | strcat (msg, c->enums[i]); | |
1329 | } | |
1330 | strcat (msg, "."); | |
1331 | error (msg); | |
1332 | } | |
1333 | ||
1334 | p = strchr (arg, ' '); | |
1335 | ||
1336 | if (p) | |
1337 | len = p - arg; | |
1338 | else | |
1339 | len = strlen (arg); | |
1340 | ||
1341 | nmatches = 0; | |
1342 | for (i = 0; c->enums[i]; i++) | |
1343 | if (strncmp (arg, c->enums[i], len) == 0) | |
1344 | { | |
1345 | match = c->enums[i]; | |
1346 | nmatches++; | |
1347 | } | |
1348 | ||
1349 | if (nmatches <= 0) | |
1350 | error ("Undefined item: \"%s\".", arg); | |
1351 | ||
1352 | if (nmatches > 1) | |
1353 | error ("Ambiguous item \"%s\".", arg); | |
1354 | ||
1355 | *(char **)c->var = match; | |
1356 | } | |
1357 | break; | |
1358 | default: | |
1359 | error ("gdb internal error: bad var_type in do_setshow_command"); | |
1360 | } | |
1361 | } | |
1362 | else if (c->type == show_cmd) | |
1363 | { | |
1364 | /* Print doc minus "show" at start. */ | |
1365 | print_doc_line (gdb_stdout, c->doc + 5); | |
1366 | ||
1367 | fputs_filtered (" is ", gdb_stdout); | |
1368 | wrap_here (" "); | |
1369 | switch (c->var_type) | |
1370 | { | |
1371 | case var_string: | |
1372 | { | |
1373 | unsigned char *p; | |
1374 | ||
1375 | fputs_filtered ("\"", gdb_stdout); | |
1376 | if (*(unsigned char **)c->var) | |
1377 | for (p = *(unsigned char **) c->var; *p != '\0'; p++) | |
1378 | gdb_printchar (*p, gdb_stdout, '"'); | |
1379 | fputs_filtered ("\"", gdb_stdout); | |
1380 | } | |
1381 | break; | |
1382 | case var_string_noescape: | |
1383 | case var_filename: | |
1384 | case var_enum: | |
1385 | fputs_filtered ("\"", gdb_stdout); | |
1386 | if (*(char **)c->var) | |
1387 | fputs_filtered (*(char **) c->var, gdb_stdout); | |
1388 | fputs_filtered ("\"", gdb_stdout); | |
1389 | break; | |
1390 | case var_boolean: | |
1391 | fputs_filtered (*(int *) c->var ? "on" : "off", gdb_stdout); | |
1392 | break; | |
1393 | case var_uinteger: | |
1394 | if (*(unsigned int *) c->var == UINT_MAX) { | |
1395 | fputs_filtered ("unlimited", gdb_stdout); | |
1396 | break; | |
1397 | } | |
1398 | /* else fall through */ | |
1399 | case var_zinteger: | |
1400 | fprintf_filtered (gdb_stdout, "%u", *(unsigned int *) c->var); | |
1401 | break; | |
1402 | case var_integer: | |
1403 | if (*(int *) c->var == INT_MAX) | |
1404 | { | |
1405 | fputs_filtered ("unlimited", gdb_stdout); | |
1406 | } | |
1407 | else | |
1408 | fprintf_filtered (gdb_stdout, "%d", *(int *) c->var); | |
1409 | break; | |
1410 | ||
1411 | default: | |
1412 | error ("gdb internal error: bad var_type in do_setshow_command"); | |
1413 | } | |
1414 | fputs_filtered (".\n", gdb_stdout); | |
1415 | } | |
1416 | else | |
1417 | error ("gdb internal error: bad cmd_type in do_setshow_command"); | |
1418 | (*c->function.sfunc) (NULL, from_tty, c); | |
1419 | } | |
1420 | ||
1421 | /* Show all the settings in a list of show commands. */ | |
1422 | ||
1423 | void | |
1424 | cmd_show_list (list, from_tty, prefix) | |
1425 | struct cmd_list_element *list; | |
1426 | int from_tty; | |
1427 | char *prefix; | |
1428 | { | |
1429 | for (; list != NULL; list = list->next) { | |
1430 | /* If we find a prefix, run its list, prefixing our output by its | |
1431 | prefix (with "show " skipped). */ | |
1432 | if (list->prefixlist && !list->abbrev_flag) | |
1433 | cmd_show_list (*list->prefixlist, from_tty, list->prefixname + 5); | |
1434 | if (list->type == show_cmd) | |
1435 | { | |
1436 | fputs_filtered (prefix, gdb_stdout); | |
1437 | fputs_filtered (list->name, gdb_stdout); | |
1438 | fputs_filtered (": ", gdb_stdout); | |
1439 | do_setshow_command ((char *)NULL, from_tty, list); | |
1440 | } | |
1441 | } | |
1442 | } | |
1443 | ||
1444 | /* ARGSUSED */ | |
1445 | static void | |
1446 | shell_escape (arg, from_tty) | |
1447 | char *arg; | |
1448 | int from_tty; | |
1449 | { | |
1450 | #ifdef CANT_FORK | |
1451 | /* FIXME: what about errors (I don't know how GO32 system() handles | |
1452 | them)? */ | |
1453 | system (arg); | |
1454 | #else /* Can fork. */ | |
1455 | int rc, status, pid; | |
1456 | char *p, *user_shell; | |
1457 | ||
1458 | if ((user_shell = (char *) getenv ("SHELL")) == NULL) | |
1459 | user_shell = "/bin/sh"; | |
1460 | ||
1461 | /* Get the name of the shell for arg0 */ | |
1462 | if ((p = strrchr (user_shell, '/')) == NULL) | |
1463 | p = user_shell; | |
1464 | else | |
1465 | p++; /* Get past '/' */ | |
1466 | ||
1467 | if ((pid = fork()) == 0) | |
1468 | { | |
1469 | if (!arg) | |
1470 | execl (user_shell, p, 0); | |
1471 | else | |
1472 | execl (user_shell, p, "-c", arg, 0); | |
1473 | ||
1474 | fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell, | |
1475 | safe_strerror (errno)); | |
1476 | gdb_flush (gdb_stderr); | |
1477 | _exit (0177); | |
1478 | } | |
1479 | ||
1480 | if (pid != -1) | |
1481 | while ((rc = wait (&status)) != pid && rc != -1) | |
1482 | ; | |
1483 | else | |
1484 | error ("Fork failed"); | |
1485 | #endif /* Can fork. */ | |
1486 | } | |
1487 | ||
1488 | static void | |
1489 | make_command (arg, from_tty) | |
1490 | char *arg; | |
1491 | int from_tty; | |
1492 | { | |
1493 | char *p; | |
1494 | ||
1495 | if (arg == 0) | |
1496 | p = "make"; | |
1497 | else | |
1498 | { | |
1499 | p = xmalloc (sizeof("make ") + strlen(arg)); | |
1500 | strcpy (p, "make "); | |
1501 | strcpy (p + sizeof("make ")-1, arg); | |
1502 | } | |
1503 | ||
1504 | shell_escape (p, from_tty); | |
1505 | } | |
1506 | ||
1507 | static void | |
1508 | show_user_1 (c, stream) | |
1509 | struct cmd_list_element *c; | |
1510 | GDB_FILE *stream; | |
1511 | { | |
1512 | register struct command_line *cmdlines; | |
1513 | ||
1514 | cmdlines = c->user_commands; | |
1515 | if (!cmdlines) | |
1516 | return; | |
1517 | fputs_filtered ("User command ", stream); | |
1518 | fputs_filtered (c->name, stream); | |
1519 | fputs_filtered (":\n", stream); | |
1520 | ||
1521 | while (cmdlines) | |
1522 | { | |
9e086581 | 1523 | print_command_line (cmdlines, 4, stream); |
c906108c SS |
1524 | cmdlines = cmdlines->next; |
1525 | } | |
1526 | fputs_filtered ("\n", stream); | |
1527 | } | |
1528 | ||
1529 | /* ARGSUSED */ | |
1530 | static void | |
1531 | show_user (args, from_tty) | |
1532 | char *args; | |
1533 | int from_tty; | |
1534 | { | |
1535 | struct cmd_list_element *c; | |
1536 | extern struct cmd_list_element *cmdlist; | |
1537 | ||
1538 | if (args) | |
1539 | { | |
1540 | c = lookup_cmd (&args, cmdlist, "", 0, 1); | |
1541 | if (c->class != class_user) | |
1542 | error ("Not a user command."); | |
1543 | show_user_1 (c, gdb_stdout); | |
1544 | } | |
1545 | else | |
1546 | { | |
1547 | for (c = cmdlist; c; c = c->next) | |
1548 | { | |
1549 | if (c->class == class_user) | |
1550 | show_user_1 (c, gdb_stdout); | |
1551 | } | |
1552 | } | |
1553 | } | |
1554 | ||
1555 | void | |
1556 | _initialize_command () | |
1557 | { | |
1558 | add_com ("shell", class_support, shell_escape, | |
1559 | "Execute the rest of the line as a shell command. \n\ | |
1560 | With no arguments, run an inferior shell."); | |
1561 | ||
1562 | if (xdb_commands) | |
1563 | add_com_alias("!", "shell", class_support, 0); | |
1564 | ||
1565 | add_com ("make", class_support, make_command, | |
1566 | "Run the ``make'' program using the rest of the line as arguments."); | |
1567 | add_cmd ("user", no_class, show_user, | |
1568 | "Show definitions of user defined commands.\n\ | |
1569 | Argument is the name of the user defined command.\n\ | |
1570 | With no argument, show definitions of all user defined commands.", &showlist); | |
1571 | } |