Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Handle lists of commands, their decoding and documentation, for GDB. |
8926118c AC |
2 | |
3 | Copyright 1986, 1989, 1990, 1991, 1998, 2000, 2001, 2002 Free | |
4 | Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b JM |
6 | This program is free software; you can redistribute it and/or modify |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b JM |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
20 | |
21 | #include "defs.h" | |
c906108c | 22 | #include "symtab.h" |
c906108c | 23 | #include <ctype.h> |
f77b92bf | 24 | #include "gdb_regex.h" |
5f8a3188 | 25 | #include "gdb_string.h" |
d318976c | 26 | |
8b93c638 | 27 | #include "ui-out.h" |
c906108c | 28 | |
d318976c FN |
29 | #include "cli/cli-cmds.h" |
30 | #include "cli/cli-decode.h" | |
53a5351d | 31 | |
6a83354a AC |
32 | #ifdef TUI |
33 | #include "tui/tui.h" /* For tui_active et.al. */ | |
34 | #endif | |
35 | ||
b2875cc0 AC |
36 | #include "gdb_assert.h" |
37 | ||
c906108c SS |
38 | /* Prototypes for local functions */ |
39 | ||
a14ed312 | 40 | static void undef_cmd_error (char *, char *); |
c906108c | 41 | |
a14ed312 KB |
42 | static struct cmd_list_element *find_cmd (char *command, |
43 | int len, | |
44 | struct cmd_list_element *clist, | |
45 | int ignore_help_classes, | |
46 | int *nfound); | |
6837a0a2 | 47 | |
c85871a3 | 48 | static void help_all (struct ui_file *stream); |
d318976c | 49 | \f |
9f60d481 AC |
50 | /* Set the callback function for the specified command. For each both |
51 | the commands callback and func() are set. The latter set to a | |
52 | bounce function (unless cfunc / sfunc is NULL that is). */ | |
53 | ||
54 | static void | |
55 | do_cfunc (struct cmd_list_element *c, char *args, int from_tty) | |
56 | { | |
57 | c->function.cfunc (args, from_tty); /* Ok. */ | |
58 | } | |
59 | ||
60 | void | |
9773a94b | 61 | set_cmd_cfunc (struct cmd_list_element *cmd, cmd_cfunc_ftype *cfunc) |
9f60d481 AC |
62 | { |
63 | if (cfunc == NULL) | |
64 | cmd->func = NULL; | |
65 | else | |
66 | cmd->func = do_cfunc; | |
67 | cmd->function.cfunc = cfunc; /* Ok. */ | |
68 | } | |
69 | ||
70 | static void | |
71 | do_sfunc (struct cmd_list_element *c, char *args, int from_tty) | |
72 | { | |
73 | c->function.sfunc (args, from_tty, c); /* Ok. */ | |
74 | } | |
75 | ||
76 | void | |
9773a94b | 77 | set_cmd_sfunc (struct cmd_list_element *cmd, cmd_sfunc_ftype *sfunc) |
9f60d481 AC |
78 | { |
79 | if (sfunc == NULL) | |
80 | cmd->func = NULL; | |
81 | else | |
82 | cmd->func = do_sfunc; | |
83 | cmd->function.sfunc = sfunc; /* Ok. */ | |
84 | } | |
85 | ||
bbaca940 AC |
86 | int |
87 | cmd_cfunc_eq (struct cmd_list_element *cmd, | |
88 | void (*cfunc) (char *args, int from_tty)) | |
89 | { | |
90 | return cmd->func == do_cfunc && cmd->function.cfunc == cfunc; | |
91 | } | |
92 | ||
7d0766f3 AC |
93 | void |
94 | set_cmd_context (struct cmd_list_element *cmd, void *context) | |
95 | { | |
96 | cmd->context = context; | |
97 | } | |
98 | ||
99 | void * | |
100 | get_cmd_context (struct cmd_list_element *cmd) | |
101 | { | |
102 | return cmd->context; | |
103 | } | |
104 | ||
1868c04e AC |
105 | enum cmd_types |
106 | cmd_type (struct cmd_list_element *cmd) | |
107 | { | |
108 | return cmd->type; | |
109 | } | |
110 | ||
5ba2abeb AC |
111 | void |
112 | set_cmd_completer (struct cmd_list_element *cmd, | |
113 | char **(*completer) (char *text, char *word)) | |
114 | { | |
115 | cmd->completer = completer; /* Ok. */ | |
116 | } | |
117 | ||
9f60d481 | 118 | |
c906108c SS |
119 | /* Add element named NAME. |
120 | CLASS is the top level category into which commands are broken down | |
121 | for "help" purposes. | |
122 | FUN should be the function to execute the command; | |
123 | it will get a character string as argument, with leading | |
124 | and trailing blanks already eliminated. | |
125 | ||
126 | DOC is a documentation string for the command. | |
127 | Its first line should be a complete sentence. | |
128 | It should start with ? for a command that is an abbreviation | |
129 | or with * for a command that most users don't need to know about. | |
130 | ||
131 | Add this command to command list *LIST. | |
132 | ||
133 | Returns a pointer to the added command (not necessarily the head | |
134 | of *LIST). */ | |
135 | ||
136 | struct cmd_list_element * | |
af1c1752 KB |
137 | add_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
138 | char *doc, struct cmd_list_element **list) | |
c906108c | 139 | { |
d5b5ac79 | 140 | struct cmd_list_element *c |
c5aa993b | 141 | = (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); |
c906108c SS |
142 | struct cmd_list_element *p; |
143 | ||
144 | delete_cmd (name, list); | |
145 | ||
494b7ec9 | 146 | if (*list == NULL || strcmp ((*list)->name, name) >= 0) |
c906108c SS |
147 | { |
148 | c->next = *list; | |
149 | *list = c; | |
150 | } | |
151 | else | |
152 | { | |
153 | p = *list; | |
494b7ec9 | 154 | while (p->next && strcmp (p->next->name, name) <= 0) |
c5aa993b JM |
155 | { |
156 | p = p->next; | |
157 | } | |
c906108c SS |
158 | c->next = p->next; |
159 | p->next = c; | |
160 | } | |
161 | ||
162 | c->name = name; | |
163 | c->class = class; | |
9f60d481 | 164 | set_cmd_cfunc (c, fun); |
7d0766f3 | 165 | set_cmd_context (c, NULL); |
c906108c | 166 | c->doc = doc; |
56382845 FN |
167 | c->flags = 0; |
168 | c->replacement = NULL; | |
47724592 | 169 | c->pre_show_hook = NULL; |
73bc900d FN |
170 | c->hook_pre = NULL; |
171 | c->hook_post = NULL; | |
172 | c->hook_in = 0; | |
c906108c SS |
173 | c->prefixlist = NULL; |
174 | c->prefixname = NULL; | |
175 | c->allow_unknown = 0; | |
176 | c->abbrev_flag = 0; | |
5ba2abeb | 177 | set_cmd_completer (c, make_symbol_completion_list); |
c906108c SS |
178 | c->type = not_set_cmd; |
179 | c->var = NULL; | |
180 | c->var_type = var_boolean; | |
181 | c->enums = NULL; | |
182 | c->user_commands = NULL; | |
73bc900d FN |
183 | c->hookee_pre = NULL; |
184 | c->hookee_post = NULL; | |
c906108c SS |
185 | c->cmd_pointer = NULL; |
186 | ||
187 | return c; | |
188 | } | |
189 | ||
56382845 FN |
190 | /* Deprecates a command CMD. |
191 | REPLACEMENT is the name of the command which should be used in place | |
192 | of this command, or NULL if no such command exists. | |
193 | ||
194 | This function does not check to see if command REPLACEMENT exists | |
195 | since gdb may not have gotten around to adding REPLACEMENT when this | |
196 | function is called. | |
197 | ||
198 | Returns a pointer to the deprecated command. */ | |
199 | ||
200 | struct cmd_list_element * | |
fba45db2 | 201 | deprecate_cmd (struct cmd_list_element *cmd, char *replacement) |
56382845 FN |
202 | { |
203 | cmd->flags |= (CMD_DEPRECATED | DEPRECATED_WARN_USER); | |
204 | ||
205 | if (replacement != NULL) | |
206 | cmd->replacement = replacement; | |
207 | else | |
208 | cmd->replacement = NULL; | |
209 | ||
210 | return cmd; | |
211 | } | |
212 | ||
c906108c | 213 | struct cmd_list_element * |
fba45db2 KB |
214 | add_alias_cmd (char *name, char *oldname, enum command_class class, |
215 | int abbrev_flag, struct cmd_list_element **list) | |
c906108c SS |
216 | { |
217 | /* Must do this since lookup_cmd tries to side-effect its first arg */ | |
218 | char *copied_name; | |
d5b5ac79 AC |
219 | struct cmd_list_element *old; |
220 | struct cmd_list_element *c; | |
c906108c SS |
221 | copied_name = (char *) alloca (strlen (oldname) + 1); |
222 | strcpy (copied_name, oldname); | |
c5aa993b | 223 | old = lookup_cmd (&copied_name, *list, "", 1, 1); |
c906108c SS |
224 | |
225 | if (old == 0) | |
226 | { | |
227 | delete_cmd (name, list); | |
228 | return 0; | |
229 | } | |
230 | ||
9f60d481 AC |
231 | c = add_cmd (name, class, NULL, old->doc, list); |
232 | /* NOTE: Both FUNC and all the FUNCTIONs need to be copied. */ | |
233 | c->func = old->func; | |
234 | c->function = old->function; | |
c906108c SS |
235 | c->prefixlist = old->prefixlist; |
236 | c->prefixname = old->prefixname; | |
237 | c->allow_unknown = old->allow_unknown; | |
238 | c->abbrev_flag = abbrev_flag; | |
239 | c->cmd_pointer = old; | |
240 | return c; | |
241 | } | |
242 | ||
243 | /* Like add_cmd but adds an element for a command prefix: | |
244 | a name that should be followed by a subcommand to be looked up | |
245 | in another command list. PREFIXLIST should be the address | |
246 | of the variable containing that list. */ | |
247 | ||
248 | struct cmd_list_element * | |
af1c1752 KB |
249 | add_prefix_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
250 | char *doc, struct cmd_list_element **prefixlist, | |
251 | char *prefixname, int allow_unknown, | |
252 | struct cmd_list_element **list) | |
c906108c | 253 | { |
d5b5ac79 | 254 | struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); |
c906108c SS |
255 | c->prefixlist = prefixlist; |
256 | c->prefixname = prefixname; | |
257 | c->allow_unknown = allow_unknown; | |
258 | return c; | |
259 | } | |
260 | ||
261 | /* Like add_prefix_cmd but sets the abbrev_flag on the new command. */ | |
c5aa993b | 262 | |
c906108c | 263 | struct cmd_list_element * |
af1c1752 KB |
264 | add_abbrev_prefix_cmd (char *name, enum command_class class, |
265 | void (*fun) (char *, int), char *doc, | |
266 | struct cmd_list_element **prefixlist, char *prefixname, | |
267 | int allow_unknown, struct cmd_list_element **list) | |
c906108c | 268 | { |
d5b5ac79 | 269 | struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); |
c906108c SS |
270 | c->prefixlist = prefixlist; |
271 | c->prefixname = prefixname; | |
272 | c->allow_unknown = allow_unknown; | |
273 | c->abbrev_flag = 1; | |
274 | return c; | |
275 | } | |
276 | ||
277 | /* This is an empty "cfunc". */ | |
278 | void | |
fba45db2 | 279 | not_just_help_class_command (char *args, int from_tty) |
c906108c SS |
280 | { |
281 | } | |
282 | ||
283 | /* This is an empty "sfunc". */ | |
a14ed312 | 284 | static void empty_sfunc (char *, int, struct cmd_list_element *); |
c906108c SS |
285 | |
286 | static void | |
fba45db2 | 287 | empty_sfunc (char *args, int from_tty, struct cmd_list_element *c) |
c906108c SS |
288 | { |
289 | } | |
290 | ||
b2875cc0 | 291 | /* Add element named NAME to command list LIST (the list for set/show |
c906108c | 292 | or some sublist thereof). |
b2875cc0 | 293 | TYPE is set_cmd or show_cmd. |
c906108c SS |
294 | CLASS is as in add_cmd. |
295 | VAR_TYPE is the kind of thing we are setting. | |
296 | VAR is address of the variable being controlled by this command. | |
297 | DOC is the documentation string. */ | |
298 | ||
b2875cc0 AC |
299 | static struct cmd_list_element * |
300 | add_set_or_show_cmd (char *name, | |
301 | enum cmd_types type, | |
302 | enum command_class class, | |
303 | var_types var_type, | |
304 | void *var, | |
305 | char *doc, | |
306 | struct cmd_list_element **list) | |
c906108c | 307 | { |
e00d1dc8 | 308 | struct cmd_list_element *c = add_cmd (name, class, NULL, doc, list); |
b2875cc0 AC |
309 | gdb_assert (type == set_cmd || type == show_cmd); |
310 | c->type = type; | |
c906108c SS |
311 | c->var_type = var_type; |
312 | c->var = var; | |
e00d1dc8 | 313 | /* This needs to be something besides NULL so that this isn't |
c906108c | 314 | treated as a help class. */ |
9f60d481 | 315 | set_cmd_sfunc (c, empty_sfunc); |
c906108c SS |
316 | return c; |
317 | } | |
318 | ||
e707bbc2 AC |
319 | /* Add element named NAME to both the command SET_LIST and SHOW_LIST. |
320 | CLASS is as in add_cmd. VAR_TYPE is the kind of thing we are | |
321 | setting. VAR is address of the variable being controlled by this | |
322 | command. SET_FUNC and SHOW_FUNC are the callback functions (if | |
9f064c95 TT |
323 | non-NULL). SET_DOC and SHOW_DOC are the documentation strings. |
324 | SET_RESULT and SHOW_RESULT, if not NULL, are set to the resulting | |
325 | command structures. */ | |
e707bbc2 | 326 | |
9f064c95 TT |
327 | void |
328 | add_setshow_cmd_full (char *name, | |
329 | enum command_class class, | |
330 | var_types var_type, void *var, | |
331 | char *set_doc, char *show_doc, | |
332 | cmd_sfunc_ftype *set_func, cmd_sfunc_ftype *show_func, | |
333 | struct cmd_list_element **set_list, | |
334 | struct cmd_list_element **show_list, | |
335 | struct cmd_list_element **set_result, | |
336 | struct cmd_list_element **show_result) | |
e707bbc2 AC |
337 | { |
338 | struct cmd_list_element *set; | |
339 | struct cmd_list_element *show; | |
340 | set = add_set_or_show_cmd (name, set_cmd, class, var_type, var, | |
341 | set_doc, set_list); | |
342 | if (set_func != NULL) | |
343 | set_cmd_sfunc (set, set_func); | |
344 | show = add_set_or_show_cmd (name, show_cmd, class, var_type, var, | |
345 | show_doc, show_list); | |
346 | if (show_func != NULL) | |
347 | set_cmd_sfunc (show, show_func); | |
9f064c95 TT |
348 | |
349 | if (set_result != NULL) | |
350 | *set_result = set; | |
351 | if (show_result != NULL) | |
352 | *show_result = show; | |
353 | } | |
354 | ||
355 | /* Add element named NAME to both the command SET_LIST and SHOW_LIST. | |
356 | CLASS is as in add_cmd. VAR_TYPE is the kind of thing we are | |
357 | setting. VAR is address of the variable being controlled by this | |
358 | command. SET_FUNC and SHOW_FUNC are the callback functions (if | |
359 | non-NULL). SET_DOC and SHOW_DOC are the documentation strings. */ | |
360 | ||
361 | void | |
362 | add_setshow_cmd (char *name, | |
363 | enum command_class class, | |
364 | var_types var_type, void *var, | |
365 | char *set_doc, char *show_doc, | |
366 | cmd_sfunc_ftype *set_func, cmd_sfunc_ftype *show_func, | |
367 | struct cmd_list_element **set_list, | |
368 | struct cmd_list_element **show_list) | |
369 | { | |
370 | add_setshow_cmd_full (name, class, var_type, var, set_doc, show_doc, | |
371 | set_func, show_func, set_list, show_list, | |
372 | NULL, NULL); | |
e707bbc2 | 373 | } |
b2875cc0 AC |
374 | |
375 | struct cmd_list_element * | |
376 | add_set_cmd (char *name, | |
377 | enum command_class class, | |
378 | var_types var_type, | |
379 | void *var, | |
380 | char *doc, | |
381 | struct cmd_list_element **list) | |
382 | { | |
383 | return add_set_or_show_cmd (name, set_cmd, class, var_type, var, doc, list); | |
384 | } | |
385 | ||
c906108c SS |
386 | /* Add element named NAME to command list LIST (the list for set |
387 | or some sublist thereof). | |
388 | CLASS is as in add_cmd. | |
389 | ENUMLIST is a list of strings which may follow NAME. | |
390 | VAR is address of the variable which will contain the matching string | |
c5aa993b | 391 | (from ENUMLIST). |
c906108c SS |
392 | DOC is the documentation string. */ |
393 | ||
394 | struct cmd_list_element * | |
1ed2a135 AC |
395 | add_set_enum_cmd (char *name, |
396 | enum command_class class, | |
53904c9e AC |
397 | const char *enumlist[], |
398 | const char **var, | |
1ed2a135 AC |
399 | char *doc, |
400 | struct cmd_list_element **list) | |
c906108c SS |
401 | { |
402 | struct cmd_list_element *c | |
c5aa993b | 403 | = add_set_cmd (name, class, var_enum, var, doc, list); |
c906108c SS |
404 | c->enums = enumlist; |
405 | ||
406 | return c; | |
407 | } | |
408 | ||
e9e68a56 AC |
409 | /* Add an auto-boolean command named NAME to both the set and show |
410 | command list lists. CLASS is as in add_cmd. VAR is address of the | |
411 | variable which will contain the value. DOC is the documentation | |
412 | string. FUNC is the corresponding callback. */ | |
413 | void | |
414 | add_setshow_auto_boolean_cmd (char *name, | |
415 | enum command_class class, | |
416 | enum auto_boolean *var, | |
417 | char *set_doc, char *show_doc, | |
418 | cmd_sfunc_ftype *set_func, | |
419 | cmd_sfunc_ftype *show_func, | |
420 | struct cmd_list_element **set_list, | |
421 | struct cmd_list_element **show_list) | |
97c3646f AC |
422 | { |
423 | static const char *auto_boolean_enums[] = { "on", "off", "auto", NULL }; | |
424 | struct cmd_list_element *c; | |
9f064c95 TT |
425 | add_setshow_cmd_full (name, class, var_auto_boolean, var, |
426 | set_doc, show_doc, set_func, show_func, | |
427 | set_list, show_list, | |
428 | &c, NULL); | |
97c3646f | 429 | c->enums = auto_boolean_enums; |
97c3646f AC |
430 | } |
431 | ||
e707bbc2 AC |
432 | /* Add element named NAME to both the set and show command LISTs (the |
433 | list for set/show or some sublist thereof). CLASS is as in | |
434 | add_cmd. VAR is address of the variable which will contain the | |
ba3e8e46 | 435 | value. SET_DOC and SHOW_DOC are the documentation strings. */ |
e707bbc2 AC |
436 | void |
437 | add_setshow_boolean_cmd (char *name, | |
438 | enum command_class class, | |
439 | int *var, char *set_doc, char *show_doc, | |
440 | cmd_sfunc_ftype *set_func, | |
441 | cmd_sfunc_ftype *show_func, | |
442 | struct cmd_list_element **set_list, | |
443 | struct cmd_list_element **show_list) | |
f3796e26 AC |
444 | { |
445 | static const char *boolean_enums[] = { "on", "off", NULL }; | |
446 | struct cmd_list_element *c; | |
9f064c95 TT |
447 | add_setshow_cmd_full (name, class, var_boolean, var, |
448 | set_doc, show_doc, | |
449 | set_func, show_func, | |
450 | set_list, show_list, | |
451 | &c, NULL); | |
f3796e26 | 452 | c->enums = boolean_enums; |
f3796e26 AC |
453 | } |
454 | ||
25d29d70 AC |
455 | /* Add element named NAME to both the set and show command LISTs (the |
456 | list for set/show or some sublist thereof). CLASS is as in | |
457 | add_cmd. VAR is address of the variable which will contain the | |
ba3e8e46 | 458 | value. SET_DOC and SHOW_DOC are the documentation strings. */ |
25d29d70 AC |
459 | void |
460 | add_setshow_uinteger_cmd (char *name, | |
461 | enum command_class class, | |
462 | unsigned int *var, char *set_doc, char *show_doc, | |
463 | cmd_sfunc_ftype *set_func, | |
464 | cmd_sfunc_ftype *show_func, | |
465 | struct cmd_list_element **set_list, | |
466 | struct cmd_list_element **show_list) | |
467 | { | |
468 | add_setshow_cmd_full (name, class, var_uinteger, var, | |
469 | set_doc, show_doc, | |
470 | set_func, show_func, | |
471 | set_list, show_list, | |
472 | NULL, NULL); | |
473 | } | |
474 | ||
15170568 AC |
475 | /* Add element named NAME to both the set and show command LISTs (the |
476 | list for set/show or some sublist thereof). CLASS is as in | |
477 | add_cmd. VAR is address of the variable which will contain the | |
ba3e8e46 | 478 | value. SET_DOC and SHOW_DOC are the documentation strings. */ |
15170568 AC |
479 | void |
480 | add_setshow_zinteger_cmd (char *name, | |
481 | enum command_class class, | |
482 | int *var, char *set_doc, char *show_doc, | |
483 | cmd_sfunc_ftype *set_func, | |
484 | cmd_sfunc_ftype *show_func, | |
485 | struct cmd_list_element **set_list, | |
486 | struct cmd_list_element **show_list) | |
487 | { | |
488 | add_setshow_cmd_full (name, class, var_zinteger, var, | |
489 | set_doc, show_doc, | |
490 | set_func, show_func, | |
491 | set_list, show_list, | |
492 | NULL, NULL); | |
493 | } | |
494 | ||
c906108c | 495 | /* Where SETCMD has already been added, add the corresponding show |
b2875cc0 | 496 | command to LIST and return a pointer to the added command (not |
c906108c | 497 | necessarily the head of LIST). */ |
b2875cc0 | 498 | /* NOTE: cagney/2002-03-17: The original version of add_show_from_set |
c0e624e7 | 499 | used memcpy() to clone `set' into `show'. This meant that in |
b2875cc0 AC |
500 | addition to all the needed fields (var, name, et.al.) some |
501 | unnecessary fields were copied (namely the callback function). The | |
502 | function explictly copies relevant fields. For a `set' and `show' | |
503 | command to share the same callback, the caller must set both | |
504 | explicitly. */ | |
c906108c | 505 | struct cmd_list_element * |
fba45db2 KB |
506 | add_show_from_set (struct cmd_list_element *setcmd, |
507 | struct cmd_list_element **list) | |
c906108c | 508 | { |
b2875cc0 AC |
509 | char *doc; |
510 | const static char setstring[] = "Set "; | |
c5aa993b | 511 | |
b2875cc0 AC |
512 | /* Create a doc string by replacing "Set " at the start of the |
513 | `set'' command's doco with "Show ". */ | |
514 | gdb_assert (strncmp (setcmd->doc, setstring, sizeof (setstring) - 1) == 0); | |
515 | doc = concat ("Show ", setcmd->doc + sizeof (setstring) - 1, NULL); | |
c906108c | 516 | |
b2875cc0 AC |
517 | /* Insert the basic command. */ |
518 | return add_set_or_show_cmd (setcmd->name, show_cmd, setcmd->class, | |
519 | setcmd->var_type, setcmd->var, doc, list); | |
c906108c SS |
520 | } |
521 | ||
522 | /* Remove the command named NAME from the command list. */ | |
523 | ||
524 | void | |
fba45db2 | 525 | delete_cmd (char *name, struct cmd_list_element **list) |
c906108c | 526 | { |
d5b5ac79 | 527 | struct cmd_list_element *c; |
c906108c SS |
528 | struct cmd_list_element *p; |
529 | ||
6314a349 | 530 | while (*list && strcmp ((*list)->name, name) == 0) |
c906108c | 531 | { |
73bc900d FN |
532 | if ((*list)->hookee_pre) |
533 | (*list)->hookee_pre->hook_pre = 0; /* Hook slips out of its mouth */ | |
534 | if ((*list)->hookee_post) | |
535 | (*list)->hookee_post->hook_post = 0; /* Hook slips out of its bottom */ | |
c906108c | 536 | p = (*list)->next; |
b8c9b27d | 537 | xfree (* list); |
c906108c SS |
538 | *list = p; |
539 | } | |
540 | ||
541 | if (*list) | |
542 | for (c = *list; c->next;) | |
543 | { | |
6314a349 | 544 | if (strcmp (c->next->name, name) == 0) |
c906108c | 545 | { |
73bc900d FN |
546 | if (c->next->hookee_pre) |
547 | c->next->hookee_pre->hook_pre = 0; /* hooked cmd gets away. */ | |
548 | if (c->next->hookee_post) | |
549 | c->next->hookee_post->hook_post = 0; /* remove post hook */ | |
550 | /* :( no fishing metaphore */ | |
c906108c | 551 | p = c->next->next; |
b8c9b27d | 552 | xfree (c->next); |
c906108c SS |
553 | c->next = p; |
554 | } | |
555 | else | |
556 | c = c->next; | |
557 | } | |
558 | } | |
d318976c FN |
559 | \f |
560 | /* Shorthands to the commands above. */ | |
561 | ||
562 | /* Add an element to the list of info subcommands. */ | |
563 | ||
564 | struct cmd_list_element * | |
565 | add_info (char *name, void (*fun) (char *, int), char *doc) | |
566 | { | |
567 | return add_cmd (name, no_class, fun, doc, &infolist); | |
568 | } | |
569 | ||
570 | /* Add an alias to the list of info subcommands. */ | |
571 | ||
572 | struct cmd_list_element * | |
573 | add_info_alias (char *name, char *oldname, int abbrev_flag) | |
574 | { | |
575 | return add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
576 | } | |
577 | ||
578 | /* Add an element to the list of commands. */ | |
579 | ||
580 | struct cmd_list_element * | |
581 | add_com (char *name, enum command_class class, void (*fun) (char *, int), | |
582 | char *doc) | |
583 | { | |
584 | return add_cmd (name, class, fun, doc, &cmdlist); | |
585 | } | |
586 | ||
587 | /* Add an alias or abbreviation command to the list of commands. */ | |
588 | ||
589 | struct cmd_list_element * | |
590 | add_com_alias (char *name, char *oldname, enum command_class class, | |
591 | int abbrev_flag) | |
592 | { | |
593 | return add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
594 | } | |
595 | \f | |
6837a0a2 DB |
596 | /* Recursively walk the commandlist structures, and print out the |
597 | documentation of commands that match our regex in either their | |
598 | name, or their documentation. | |
599 | */ | |
d318976c FN |
600 | void |
601 | apropos_cmd (struct ui_file *stream, struct cmd_list_element *commandlist, | |
6837a0a2 DB |
602 | struct re_pattern_buffer *regex, char *prefix) |
603 | { | |
d5b5ac79 | 604 | struct cmd_list_element *c; |
6837a0a2 DB |
605 | int returnvalue=1; /*Needed to avoid double printing*/ |
606 | /* Walk through the commands */ | |
607 | for (c=commandlist;c;c=c->next) | |
608 | { | |
609 | if (c->name != NULL) | |
610 | { | |
611 | /* Try to match against the name*/ | |
612 | returnvalue=re_search(regex,c->name,strlen(c->name),0,strlen(c->name),NULL); | |
613 | if (returnvalue >= 0) | |
614 | { | |
615 | /* Stolen from help_cmd_list. We don't directly use | |
616 | * help_cmd_list because it doesn't let us print out | |
617 | * single commands | |
618 | */ | |
619 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
620 | print_doc_line (stream, c->doc); | |
621 | fputs_filtered ("\n", stream); | |
622 | returnvalue=0; /*Set this so we don't print it again.*/ | |
623 | } | |
624 | } | |
625 | if (c->doc != NULL && returnvalue != 0) | |
626 | { | |
627 | /* Try to match against documentation */ | |
628 | if (re_search(regex,c->doc,strlen(c->doc),0,strlen(c->doc),NULL) >=0) | |
629 | { | |
630 | /* Stolen from help_cmd_list. We don't directly use | |
631 | * help_cmd_list because it doesn't let us print out | |
632 | * single commands | |
633 | */ | |
634 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
635 | print_doc_line (stream, c->doc); | |
636 | fputs_filtered ("\n", stream); | |
637 | } | |
638 | } | |
639 | /* Check if this command has subcommands */ | |
640 | if (c->prefixlist != NULL) | |
641 | { | |
642 | /* Recursively call ourselves on the subcommand list, | |
643 | passing the right prefix in. | |
644 | */ | |
d318976c | 645 | apropos_cmd (stream,*c->prefixlist,regex,c->prefixname); |
6837a0a2 DB |
646 | } |
647 | } | |
648 | } | |
c906108c SS |
649 | |
650 | /* This command really has to deal with two things: | |
651 | * 1) I want documentation on *this string* (usually called by | |
652 | * "help commandname"). | |
653 | * 2) I want documentation on *this list* (usually called by | |
654 | * giving a command that requires subcommands. Also called by saying | |
655 | * just "help".) | |
656 | * | |
657 | * I am going to split this into two seperate comamnds, help_cmd and | |
658 | * help_list. | |
659 | */ | |
660 | ||
661 | void | |
fba45db2 | 662 | help_cmd (char *command, struct ui_file *stream) |
c906108c SS |
663 | { |
664 | struct cmd_list_element *c; | |
665 | extern struct cmd_list_element *cmdlist; | |
666 | ||
667 | if (!command) | |
668 | { | |
669 | help_list (cmdlist, "", all_classes, stream); | |
670 | return; | |
671 | } | |
672 | ||
49a5a3a3 GM |
673 | if (strcmp (command, "all") == 0) |
674 | { | |
675 | help_all (stream); | |
676 | return; | |
677 | } | |
678 | ||
c906108c SS |
679 | c = lookup_cmd (&command, cmdlist, "", 0, 0); |
680 | ||
681 | if (c == 0) | |
682 | return; | |
683 | ||
684 | /* There are three cases here. | |
685 | If c->prefixlist is nonzero, we have a prefix command. | |
686 | Print its documentation, then list its subcommands. | |
c5aa993b | 687 | |
9f60d481 AC |
688 | If c->func is non NULL, we really have a command. Print its |
689 | documentation and return. | |
c5aa993b | 690 | |
9f60d481 AC |
691 | If c->func is NULL, we have a class name. Print its |
692 | documentation (as if it were a command) and then set class to the | |
693 | number of this class so that the commands in the class will be | |
694 | listed. */ | |
c906108c SS |
695 | |
696 | fputs_filtered (c->doc, stream); | |
697 | fputs_filtered ("\n", stream); | |
698 | ||
9f60d481 | 699 | if (c->prefixlist == 0 && c->func != NULL) |
c906108c SS |
700 | return; |
701 | fprintf_filtered (stream, "\n"); | |
702 | ||
703 | /* If this is a prefix command, print it's subcommands */ | |
704 | if (c->prefixlist) | |
705 | help_list (*c->prefixlist, c->prefixname, all_commands, stream); | |
706 | ||
707 | /* If this is a class name, print all of the commands in the class */ | |
9f60d481 | 708 | if (c->func == NULL) |
c906108c SS |
709 | help_list (cmdlist, "", c->class, stream); |
710 | ||
73bc900d FN |
711 | if (c->hook_pre || c->hook_post) |
712 | fprintf_filtered (stream, | |
713 | "\nThis command has a hook (or hooks) defined:\n"); | |
714 | ||
715 | if (c->hook_pre) | |
716 | fprintf_filtered (stream, | |
717 | "\tThis command is run after : %s (pre hook)\n", | |
718 | c->hook_pre->name); | |
719 | if (c->hook_post) | |
720 | fprintf_filtered (stream, | |
721 | "\tThis command is run before : %s (post hook)\n", | |
722 | c->hook_post->name); | |
c906108c SS |
723 | } |
724 | ||
725 | /* | |
726 | * Get a specific kind of help on a command list. | |
727 | * | |
728 | * LIST is the list. | |
729 | * CMDTYPE is the prefix to use in the title string. | |
730 | * CLASS is the class with which to list the nodes of this list (see | |
731 | * documentation for help_cmd_list below), As usual, ALL_COMMANDS for | |
732 | * everything, ALL_CLASSES for just classes, and non-negative for only things | |
733 | * in a specific class. | |
734 | * and STREAM is the output stream on which to print things. | |
735 | * If you call this routine with a class >= 0, it recurses. | |
736 | */ | |
737 | void | |
fba45db2 KB |
738 | help_list (struct cmd_list_element *list, char *cmdtype, |
739 | enum command_class class, struct ui_file *stream) | |
c906108c SS |
740 | { |
741 | int len; | |
742 | char *cmdtype1, *cmdtype2; | |
c5aa993b | 743 | |
c906108c SS |
744 | /* If CMDTYPE is "foo ", CMDTYPE1 gets " foo" and CMDTYPE2 gets "foo sub" */ |
745 | len = strlen (cmdtype); | |
746 | cmdtype1 = (char *) alloca (len + 1); | |
747 | cmdtype1[0] = 0; | |
748 | cmdtype2 = (char *) alloca (len + 4); | |
749 | cmdtype2[0] = 0; | |
750 | if (len) | |
751 | { | |
752 | cmdtype1[0] = ' '; | |
753 | strncpy (cmdtype1 + 1, cmdtype, len - 1); | |
754 | cmdtype1[len] = 0; | |
755 | strncpy (cmdtype2, cmdtype, len - 1); | |
756 | strcpy (cmdtype2 + len - 1, " sub"); | |
757 | } | |
758 | ||
759 | if (class == all_classes) | |
760 | fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2); | |
761 | else | |
762 | fprintf_filtered (stream, "List of %scommands:\n\n", cmdtype2); | |
763 | ||
c5aa993b | 764 | help_cmd_list (list, class, cmdtype, (int) class >= 0, stream); |
c906108c SS |
765 | |
766 | if (class == all_classes) | |
de74f71f MS |
767 | { |
768 | fprintf_filtered (stream, "\n\ | |
769 | Type \"help%s\" followed by a class name for a list of commands in ", | |
770 | cmdtype1); | |
771 | wrap_here (""); | |
772 | fprintf_filtered (stream, "that class."); | |
773 | } | |
c906108c | 774 | |
de74f71f | 775 | fprintf_filtered (stream, "\nType \"help%s\" followed by %scommand name ", |
c5aa993b | 776 | cmdtype1, cmdtype2); |
de74f71f MS |
777 | wrap_here (""); |
778 | fputs_filtered ("for ", stream); | |
779 | wrap_here (""); | |
780 | fputs_filtered ("full ", stream); | |
781 | wrap_here (""); | |
782 | fputs_filtered ("documentation.\n", stream); | |
783 | fputs_filtered ("Command name abbreviations are allowed if unambiguous.\n", | |
784 | stream); | |
c906108c | 785 | } |
c5aa993b | 786 | |
49a5a3a3 | 787 | static void |
c85871a3 | 788 | help_all (struct ui_file *stream) |
49a5a3a3 GM |
789 | { |
790 | struct cmd_list_element *c; | |
791 | extern struct cmd_list_element *cmdlist; | |
792 | ||
793 | for (c = cmdlist; c; c = c->next) | |
794 | { | |
795 | if (c->abbrev_flag) | |
796 | continue; | |
797 | /* If this is a prefix command, print it's subcommands */ | |
798 | if (c->prefixlist) | |
799 | help_cmd_list (*c->prefixlist, all_commands, c->prefixname, 0, stream); | |
800 | ||
801 | /* If this is a class name, print all of the commands in the class */ | |
9f60d481 | 802 | else if (c->func == NULL) |
49a5a3a3 GM |
803 | help_cmd_list (cmdlist, c->class, "", 0, stream); |
804 | } | |
805 | } | |
806 | ||
c906108c | 807 | /* Print only the first line of STR on STREAM. */ |
d318976c | 808 | void |
fba45db2 | 809 | print_doc_line (struct ui_file *stream, char *str) |
c906108c SS |
810 | { |
811 | static char *line_buffer = 0; | |
812 | static int line_size; | |
d5b5ac79 | 813 | char *p; |
c906108c SS |
814 | |
815 | if (!line_buffer) | |
816 | { | |
817 | line_size = 80; | |
818 | line_buffer = (char *) xmalloc (line_size); | |
819 | } | |
820 | ||
821 | p = str; | |
822 | while (*p && *p != '\n' && *p != '.' && *p != ',') | |
823 | p++; | |
824 | if (p - str > line_size - 1) | |
825 | { | |
826 | line_size = p - str + 1; | |
b8c9b27d | 827 | xfree (line_buffer); |
c906108c SS |
828 | line_buffer = (char *) xmalloc (line_size); |
829 | } | |
830 | strncpy (line_buffer, str, p - str); | |
831 | line_buffer[p - str] = '\0'; | |
832 | if (islower (line_buffer[0])) | |
833 | line_buffer[0] = toupper (line_buffer[0]); | |
8b93c638 | 834 | ui_out_text (uiout, line_buffer); |
c906108c SS |
835 | } |
836 | ||
837 | /* | |
838 | * Implement a help command on command list LIST. | |
839 | * RECURSE should be non-zero if this should be done recursively on | |
840 | * all sublists of LIST. | |
841 | * PREFIX is the prefix to print before each command name. | |
842 | * STREAM is the stream upon which the output should be written. | |
843 | * CLASS should be: | |
c5aa993b | 844 | * A non-negative class number to list only commands in that |
c906108c | 845 | * class. |
c5aa993b JM |
846 | * ALL_COMMANDS to list all commands in list. |
847 | * ALL_CLASSES to list all classes in list. | |
c906108c SS |
848 | * |
849 | * Note that RECURSE will be active on *all* sublists, not just the | |
850 | * ones selected by the criteria above (ie. the selection mechanism | |
851 | * is at the low level, not the high-level). | |
852 | */ | |
853 | void | |
fba45db2 KB |
854 | help_cmd_list (struct cmd_list_element *list, enum command_class class, |
855 | char *prefix, int recurse, struct ui_file *stream) | |
c906108c | 856 | { |
d5b5ac79 | 857 | struct cmd_list_element *c; |
c906108c SS |
858 | |
859 | for (c = list; c; c = c->next) | |
860 | { | |
861 | if (c->abbrev_flag == 0 && | |
862 | (class == all_commands | |
9f60d481 AC |
863 | || (class == all_classes && c->func == NULL) |
864 | || (class == c->class && c->func != NULL))) | |
c906108c SS |
865 | { |
866 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
867 | print_doc_line (stream, c->doc); | |
868 | fputs_filtered ("\n", stream); | |
869 | } | |
870 | if (recurse | |
871 | && c->prefixlist != 0 | |
872 | && c->abbrev_flag == 0) | |
873 | help_cmd_list (*c->prefixlist, class, c->prefixname, 1, stream); | |
874 | } | |
875 | } | |
c906108c | 876 | \f |
c5aa993b | 877 | |
c906108c SS |
878 | /* Search the input clist for 'command'. Return the command if |
879 | found (or NULL if not), and return the number of commands | |
880 | found in nfound */ | |
881 | ||
882 | static struct cmd_list_element * | |
fba45db2 KB |
883 | find_cmd (char *command, int len, struct cmd_list_element *clist, |
884 | int ignore_help_classes, int *nfound) | |
c906108c SS |
885 | { |
886 | struct cmd_list_element *found, *c; | |
887 | ||
c5aa993b | 888 | found = (struct cmd_list_element *) NULL; |
c906108c SS |
889 | *nfound = 0; |
890 | for (c = clist; c; c = c->next) | |
891 | if (!strncmp (command, c->name, len) | |
9f60d481 | 892 | && (!ignore_help_classes || c->func)) |
c906108c | 893 | { |
c5aa993b JM |
894 | found = c; |
895 | (*nfound)++; | |
896 | if (c->name[len] == '\0') | |
897 | { | |
898 | *nfound = 1; | |
899 | break; | |
900 | } | |
c906108c SS |
901 | } |
902 | return found; | |
903 | } | |
904 | ||
905 | /* This routine takes a line of TEXT and a CLIST in which to start the | |
906 | lookup. When it returns it will have incremented the text pointer past | |
907 | the section of text it matched, set *RESULT_LIST to point to the list in | |
908 | which the last word was matched, and will return a pointer to the cmd | |
909 | list element which the text matches. It will return NULL if no match at | |
910 | all was possible. It will return -1 (cast appropriately, ick) if ambigous | |
911 | matches are possible; in this case *RESULT_LIST will be set to point to | |
912 | the list in which there are ambiguous choices (and *TEXT will be set to | |
913 | the ambiguous text string). | |
914 | ||
915 | If the located command was an abbreviation, this routine returns the base | |
916 | command of the abbreviation. | |
917 | ||
918 | It does no error reporting whatsoever; control will always return | |
919 | to the superior routine. | |
920 | ||
921 | In the case of an ambiguous return (-1), *RESULT_LIST will be set to point | |
922 | at the prefix_command (ie. the best match) *or* (special case) will be NULL | |
923 | if no prefix command was ever found. For example, in the case of "info a", | |
924 | "info" matches without ambiguity, but "a" could be "args" or "address", so | |
925 | *RESULT_LIST is set to the cmd_list_element for "info". So in this case | |
926 | RESULT_LIST should not be interpeted as a pointer to the beginning of a | |
927 | list; it simply points to a specific command. In the case of an ambiguous | |
928 | return *TEXT is advanced past the last non-ambiguous prefix (e.g. | |
929 | "info t" can be "info types" or "info target"; upon return *TEXT has been | |
930 | advanced past "info "). | |
931 | ||
932 | If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise | |
933 | affect the operation). | |
934 | ||
935 | This routine does *not* modify the text pointed to by TEXT. | |
c5aa993b | 936 | |
c906108c SS |
937 | If IGNORE_HELP_CLASSES is nonzero, ignore any command list elements which |
938 | are actually help classes rather than commands (i.e. the function field of | |
939 | the struct cmd_list_element is NULL). */ | |
940 | ||
941 | struct cmd_list_element * | |
fba45db2 KB |
942 | lookup_cmd_1 (char **text, struct cmd_list_element *clist, |
943 | struct cmd_list_element **result_list, int ignore_help_classes) | |
c906108c SS |
944 | { |
945 | char *p, *command; | |
946 | int len, tmp, nfound; | |
947 | struct cmd_list_element *found, *c; | |
56382845 | 948 | char *line = *text; |
c906108c SS |
949 | |
950 | while (**text == ' ' || **text == '\t') | |
951 | (*text)++; | |
952 | ||
953 | /* Treating underscores as part of command words is important | |
954 | so that "set args_foo()" doesn't get interpreted as | |
955 | "set args _foo()". */ | |
021e7609 AC |
956 | /* NOTE: cagney/2003-02-13 The `tui_active' was previously |
957 | `tui_version'. */ | |
c906108c | 958 | for (p = *text; |
c5aa993b | 959 | *p && (isalnum (*p) || *p == '-' || *p == '_' || |
3b27aeea | 960 | #if defined(TUI) |
021e7609 | 961 | (tui_active && |
c906108c | 962 | (*p == '+' || *p == '<' || *p == '>' || *p == '$')) || |
3b27aeea | 963 | #endif |
c906108c SS |
964 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))); |
965 | p++) | |
966 | ; | |
967 | ||
968 | /* If nothing but whitespace, return 0. */ | |
969 | if (p == *text) | |
970 | return 0; | |
c5aa993b | 971 | |
c906108c SS |
972 | len = p - *text; |
973 | ||
974 | /* *text and p now bracket the first command word to lookup (and | |
975 | it's length is len). We copy this into a local temporary */ | |
976 | ||
977 | ||
978 | command = (char *) alloca (len + 1); | |
979 | for (tmp = 0; tmp < len; tmp++) | |
980 | { | |
981 | char x = (*text)[tmp]; | |
982 | command[tmp] = x; | |
983 | } | |
984 | command[len] = '\0'; | |
985 | ||
986 | /* Look it up. */ | |
987 | found = 0; | |
988 | nfound = 0; | |
c5aa993b | 989 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); |
c906108c SS |
990 | |
991 | /* | |
c5aa993b JM |
992 | ** We didn't find the command in the entered case, so lower case it |
993 | ** and search again. | |
994 | */ | |
c906108c SS |
995 | if (!found || nfound == 0) |
996 | { | |
997 | for (tmp = 0; tmp < len; tmp++) | |
c5aa993b JM |
998 | { |
999 | char x = command[tmp]; | |
1000 | command[tmp] = isupper (x) ? tolower (x) : x; | |
1001 | } | |
1002 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); | |
c906108c SS |
1003 | } |
1004 | ||
1005 | /* If nothing matches, we have a simple failure. */ | |
1006 | if (nfound == 0) | |
1007 | return 0; | |
1008 | ||
1009 | if (nfound > 1) | |
1010 | { | |
1011 | if (result_list != NULL) | |
1012 | /* Will be modified in calling routine | |
1013 | if we know what the prefix command is. */ | |
c5aa993b JM |
1014 | *result_list = 0; |
1015 | return (struct cmd_list_element *) -1; /* Ambiguous. */ | |
c906108c SS |
1016 | } |
1017 | ||
1018 | /* We've matched something on this list. Move text pointer forward. */ | |
1019 | ||
1020 | *text = p; | |
1021 | ||
c906108c | 1022 | if (found->cmd_pointer) |
56382845 FN |
1023 | { |
1024 | /* We drop the alias (abbreviation) in favor of the command it is | |
1025 | pointing to. If the alias is deprecated, though, we need to | |
1026 | warn the user about it before we drop it. Note that while we | |
1027 | are warning about the alias, we may also warn about the command | |
1028 | itself and we will adjust the appropriate DEPRECATED_WARN_USER | |
1029 | flags */ | |
1030 | ||
1031 | if (found->flags & DEPRECATED_WARN_USER) | |
1032 | deprecated_cmd_warning (&line); | |
1033 | found = found->cmd_pointer; | |
1034 | } | |
c906108c SS |
1035 | /* If we found a prefix command, keep looking. */ |
1036 | ||
1037 | if (found->prefixlist) | |
1038 | { | |
1039 | c = lookup_cmd_1 (text, *found->prefixlist, result_list, | |
1040 | ignore_help_classes); | |
1041 | if (!c) | |
1042 | { | |
1043 | /* Didn't find anything; this is as far as we got. */ | |
1044 | if (result_list != NULL) | |
1045 | *result_list = clist; | |
1046 | return found; | |
1047 | } | |
1048 | else if (c == (struct cmd_list_element *) -1) | |
1049 | { | |
1050 | /* We've gotten this far properly, but the next step | |
1051 | is ambiguous. We need to set the result list to the best | |
1052 | we've found (if an inferior hasn't already set it). */ | |
1053 | if (result_list != NULL) | |
1054 | if (!*result_list) | |
1055 | /* This used to say *result_list = *found->prefixlist | |
c5aa993b JM |
1056 | If that was correct, need to modify the documentation |
1057 | at the top of this function to clarify what is supposed | |
1058 | to be going on. */ | |
c906108c SS |
1059 | *result_list = found; |
1060 | return c; | |
1061 | } | |
1062 | else | |
1063 | { | |
1064 | /* We matched! */ | |
1065 | return c; | |
1066 | } | |
1067 | } | |
1068 | else | |
1069 | { | |
1070 | if (result_list != NULL) | |
1071 | *result_list = clist; | |
1072 | return found; | |
1073 | } | |
1074 | } | |
1075 | ||
1076 | /* All this hair to move the space to the front of cmdtype */ | |
1077 | ||
1078 | static void | |
fba45db2 | 1079 | undef_cmd_error (char *cmdtype, char *q) |
c906108c SS |
1080 | { |
1081 | error ("Undefined %scommand: \"%s\". Try \"help%s%.*s\".", | |
c5aa993b JM |
1082 | cmdtype, |
1083 | q, | |
1084 | *cmdtype ? " " : "", | |
823ca731 | 1085 | (int) strlen (cmdtype) - 1, |
c5aa993b | 1086 | cmdtype); |
c906108c SS |
1087 | } |
1088 | ||
1089 | /* Look up the contents of *LINE as a command in the command list LIST. | |
1090 | LIST is a chain of struct cmd_list_element's. | |
1091 | If it is found, return the struct cmd_list_element for that command | |
1092 | and update *LINE to point after the command name, at the first argument. | |
1093 | If not found, call error if ALLOW_UNKNOWN is zero | |
1094 | otherwise (or if error returns) return zero. | |
1095 | Call error if specified command is ambiguous, | |
1096 | unless ALLOW_UNKNOWN is negative. | |
1097 | CMDTYPE precedes the word "command" in the error message. | |
1098 | ||
1099 | If INGNORE_HELP_CLASSES is nonzero, ignore any command list | |
1100 | elements which are actually help classes rather than commands (i.e. | |
1101 | the function field of the struct cmd_list_element is 0). */ | |
1102 | ||
1103 | struct cmd_list_element * | |
fba45db2 KB |
1104 | lookup_cmd (char **line, struct cmd_list_element *list, char *cmdtype, |
1105 | int allow_unknown, int ignore_help_classes) | |
c906108c SS |
1106 | { |
1107 | struct cmd_list_element *last_list = 0; | |
1108 | struct cmd_list_element *c = | |
c5aa993b | 1109 | lookup_cmd_1 (line, list, &last_list, ignore_help_classes); |
c64601c7 FN |
1110 | |
1111 | /* Note: Do not remove trailing whitespace here because this | |
1112 | would be wrong for complete_command. Jim Kingdon */ | |
c5aa993b | 1113 | |
c906108c SS |
1114 | if (!c) |
1115 | { | |
1116 | if (!allow_unknown) | |
1117 | { | |
1118 | if (!*line) | |
1119 | error ("Lack of needed %scommand", cmdtype); | |
1120 | else | |
1121 | { | |
1122 | char *p = *line, *q; | |
1123 | ||
c5aa993b | 1124 | while (isalnum (*p) || *p == '-') |
c906108c SS |
1125 | p++; |
1126 | ||
1127 | q = (char *) alloca (p - *line + 1); | |
1128 | strncpy (q, *line, p - *line); | |
1129 | q[p - *line] = '\0'; | |
1130 | undef_cmd_error (cmdtype, q); | |
1131 | } | |
1132 | } | |
1133 | else | |
1134 | return 0; | |
1135 | } | |
1136 | else if (c == (struct cmd_list_element *) -1) | |
1137 | { | |
1138 | /* Ambigous. Local values should be off prefixlist or called | |
c5aa993b | 1139 | values. */ |
c906108c SS |
1140 | int local_allow_unknown = (last_list ? last_list->allow_unknown : |
1141 | allow_unknown); | |
1142 | char *local_cmdtype = last_list ? last_list->prefixname : cmdtype; | |
1143 | struct cmd_list_element *local_list = | |
c5aa993b JM |
1144 | (last_list ? *(last_list->prefixlist) : list); |
1145 | ||
c906108c SS |
1146 | if (local_allow_unknown < 0) |
1147 | { | |
1148 | if (last_list) | |
1149 | return last_list; /* Found something. */ | |
1150 | else | |
1151 | return 0; /* Found nothing. */ | |
1152 | } | |
1153 | else | |
1154 | { | |
1155 | /* Report as error. */ | |
1156 | int amb_len; | |
1157 | char ambbuf[100]; | |
1158 | ||
1159 | for (amb_len = 0; | |
1160 | ((*line)[amb_len] && (*line)[amb_len] != ' ' | |
1161 | && (*line)[amb_len] != '\t'); | |
1162 | amb_len++) | |
1163 | ; | |
c5aa993b | 1164 | |
c906108c SS |
1165 | ambbuf[0] = 0; |
1166 | for (c = local_list; c; c = c->next) | |
1167 | if (!strncmp (*line, c->name, amb_len)) | |
1168 | { | |
c5aa993b | 1169 | if (strlen (ambbuf) + strlen (c->name) + 6 < (int) sizeof ambbuf) |
c906108c SS |
1170 | { |
1171 | if (strlen (ambbuf)) | |
1172 | strcat (ambbuf, ", "); | |
1173 | strcat (ambbuf, c->name); | |
1174 | } | |
1175 | else | |
1176 | { | |
1177 | strcat (ambbuf, ".."); | |
1178 | break; | |
1179 | } | |
1180 | } | |
1181 | error ("Ambiguous %scommand \"%s\": %s.", local_cmdtype, | |
1182 | *line, ambbuf); | |
1183 | return 0; /* lint */ | |
1184 | } | |
1185 | } | |
1186 | else | |
1187 | { | |
1188 | /* We've got something. It may still not be what the caller | |
1189 | wants (if this command *needs* a subcommand). */ | |
1190 | while (**line == ' ' || **line == '\t') | |
1191 | (*line)++; | |
1192 | ||
1193 | if (c->prefixlist && **line && !c->allow_unknown) | |
1194 | undef_cmd_error (c->prefixname, *line); | |
1195 | ||
1196 | /* Seems to be what he wants. Return it. */ | |
1197 | return c; | |
1198 | } | |
1199 | return 0; | |
1200 | } | |
c5aa993b | 1201 | |
56382845 FN |
1202 | /* We are here presumably because an alias or command in *TEXT is |
1203 | deprecated and a warning message should be generated. This function | |
1204 | decodes *TEXT and potentially generates a warning message as outlined | |
1205 | below. | |
1206 | ||
1207 | Example for 'set endian big' which has a fictitious alias 'seb'. | |
1208 | ||
1209 | If alias wasn't used in *TEXT, and the command is deprecated: | |
1210 | "warning: 'set endian big' is deprecated." | |
1211 | ||
1212 | If alias was used, and only the alias is deprecated: | |
1213 | "warning: 'seb' an alias for the command 'set endian big' is deprecated." | |
1214 | ||
1215 | If alias was used and command is deprecated (regardless of whether the | |
1216 | alias itself is deprecated: | |
1217 | ||
1218 | "warning: 'set endian big' (seb) is deprecated." | |
1219 | ||
1220 | After the message has been sent, clear the appropriate flags in the | |
1221 | command and/or the alias so the user is no longer bothered. | |
1222 | ||
1223 | */ | |
1224 | void | |
1225 | deprecated_cmd_warning (char **text) | |
1226 | { | |
1227 | struct cmd_list_element *alias = NULL; | |
1228 | struct cmd_list_element *prefix_cmd = NULL; | |
1229 | struct cmd_list_element *cmd = NULL; | |
1230 | struct cmd_list_element *c; | |
1231 | char *type; | |
1232 | ||
1233 | if (!lookup_cmd_composition (*text, &alias, &prefix_cmd, &cmd)) | |
1234 | /* return if text doesn't evaluate to a command */ | |
1235 | return; | |
1236 | ||
1237 | if (!((alias ? (alias->flags & DEPRECATED_WARN_USER) : 0) | |
1238 | || (cmd->flags & DEPRECATED_WARN_USER) ) ) | |
1239 | /* return if nothing is deprecated */ | |
1240 | return; | |
1241 | ||
1242 | printf_filtered ("Warning:"); | |
1243 | ||
1244 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1245 | printf_filtered (" '%s', an alias for the", alias->name); | |
1246 | ||
1247 | printf_filtered (" command '"); | |
1248 | ||
1249 | if (prefix_cmd) | |
1250 | printf_filtered ("%s", prefix_cmd->prefixname); | |
1251 | ||
1252 | printf_filtered ("%s", cmd->name); | |
1253 | ||
1254 | if (alias && (cmd->flags & CMD_DEPRECATED)) | |
1255 | printf_filtered ("' (%s) is deprecated.\n", alias->name); | |
1256 | else | |
1257 | printf_filtered ("' is deprecated.\n"); | |
1258 | ||
1259 | ||
1260 | /* if it is only the alias that is deprecated, we want to indicate the | |
1261 | new alias, otherwise we'll indicate the new command */ | |
1262 | ||
1263 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1264 | { | |
1265 | if (alias->replacement) | |
1266 | printf_filtered ("Use '%s'.\n\n", alias->replacement); | |
1267 | else | |
1268 | printf_filtered ("No alternative known.\n\n"); | |
1269 | } | |
1270 | else | |
1271 | { | |
1272 | if (cmd->replacement) | |
1273 | printf_filtered ("Use '%s'.\n\n", cmd->replacement); | |
1274 | else | |
1275 | printf_filtered ("No alternative known.\n\n"); | |
1276 | } | |
1277 | ||
1278 | /* We've warned you, now we'll keep quiet */ | |
1279 | if (alias) | |
1280 | alias->flags &= ~DEPRECATED_WARN_USER; | |
1281 | ||
1282 | cmd->flags &= ~DEPRECATED_WARN_USER; | |
1283 | } | |
1284 | ||
1285 | ||
1286 | ||
1287 | /* Look up the contents of LINE as a command in the command list 'cmdlist'. | |
1288 | Return 1 on success, 0 on failure. | |
1289 | ||
1290 | If LINE refers to an alias, *alias will point to that alias. | |
1291 | ||
1292 | If LINE is a postfix command (i.e. one that is preceeded by a prefix | |
1293 | command) set *prefix_cmd. | |
1294 | ||
1295 | Set *cmd to point to the command LINE indicates. | |
1296 | ||
1297 | If any of *alias, *prefix_cmd, or *cmd cannot be determined or do not | |
1298 | exist, they are NULL when we return. | |
1299 | ||
1300 | */ | |
1301 | int | |
1302 | lookup_cmd_composition (char *text, | |
1303 | struct cmd_list_element **alias, | |
1304 | struct cmd_list_element **prefix_cmd, | |
1305 | struct cmd_list_element **cmd) | |
1306 | { | |
1307 | char *p, *command; | |
1308 | int len, tmp, nfound; | |
1309 | struct cmd_list_element *cur_list; | |
1310 | struct cmd_list_element *prev_cmd; | |
1311 | *alias = NULL; | |
1312 | *prefix_cmd = NULL; | |
1313 | *cmd = NULL; | |
1314 | ||
1315 | cur_list = cmdlist; | |
1316 | ||
1317 | while (1) | |
1318 | { | |
1319 | /* Go through as many command lists as we need to | |
1320 | to find the command TEXT refers to. */ | |
1321 | ||
1322 | prev_cmd = *cmd; | |
1323 | ||
1324 | while (*text == ' ' || *text == '\t') | |
1325 | (text)++; | |
1326 | ||
1327 | /* Treating underscores as part of command words is important | |
1328 | so that "set args_foo()" doesn't get interpreted as | |
1329 | "set args _foo()". */ | |
021e7609 AC |
1330 | /* NOTE: cagney/2003-02-13 The `tui_active' was previously |
1331 | `tui_version'. */ | |
56382845 FN |
1332 | for (p = text; |
1333 | *p && (isalnum (*p) || *p == '-' || *p == '_' || | |
3b27aeea | 1334 | #if defined(TUI) |
021e7609 | 1335 | (tui_active && |
56382845 | 1336 | (*p == '+' || *p == '<' || *p == '>' || *p == '$')) || |
3b27aeea | 1337 | #endif |
56382845 FN |
1338 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))); |
1339 | p++) | |
1340 | ; | |
1341 | ||
1342 | /* If nothing but whitespace, return. */ | |
1343 | if (p == text) | |
1344 | return 0; | |
1345 | ||
1346 | len = p - text; | |
1347 | ||
1348 | /* text and p now bracket the first command word to lookup (and | |
1349 | it's length is len). We copy this into a local temporary */ | |
1350 | ||
1351 | command = (char *) alloca (len + 1); | |
1352 | for (tmp = 0; tmp < len; tmp++) | |
1353 | { | |
1354 | char x = text[tmp]; | |
1355 | command[tmp] = x; | |
1356 | } | |
1357 | command[len] = '\0'; | |
1358 | ||
1359 | /* Look it up. */ | |
1360 | *cmd = 0; | |
1361 | nfound = 0; | |
1362 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1363 | ||
1364 | /* We didn't find the command in the entered case, so lower case it | |
1365 | and search again. | |
1366 | */ | |
1367 | if (!*cmd || nfound == 0) | |
1368 | { | |
1369 | for (tmp = 0; tmp < len; tmp++) | |
1370 | { | |
1371 | char x = command[tmp]; | |
1372 | command[tmp] = isupper (x) ? tolower (x) : x; | |
1373 | } | |
1374 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1375 | } | |
1376 | ||
1377 | if (*cmd == (struct cmd_list_element *) -1) | |
1378 | { | |
1379 | return 0; /* ambiguous */ | |
1380 | } | |
1381 | ||
1382 | if (*cmd == NULL) | |
1383 | return 0; /* nothing found */ | |
1384 | else | |
1385 | { | |
1386 | if ((*cmd)->cmd_pointer) | |
1387 | { | |
1388 | /* cmd was actually an alias, we note that an alias was used | |
1389 | (by assigning *alais) and we set *cmd. | |
1390 | */ | |
1391 | *alias = *cmd; | |
1392 | *cmd = (*cmd)->cmd_pointer; | |
1393 | } | |
1394 | *prefix_cmd = prev_cmd; | |
1395 | } | |
1396 | if ((*cmd)->prefixlist) | |
1397 | cur_list = *(*cmd)->prefixlist; | |
1398 | else | |
1399 | return 1; | |
1400 | ||
1401 | text = p; | |
1402 | } | |
1403 | } | |
1404 | ||
c906108c SS |
1405 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ |
1406 | ||
1407 | /* Return a vector of char pointers which point to the different | |
1408 | possible completions in LIST of TEXT. | |
1409 | ||
1410 | WORD points in the same buffer as TEXT, and completions should be | |
1411 | returned relative to this position. For example, suppose TEXT is "foo" | |
1412 | and we want to complete to "foobar". If WORD is "oo", return | |
1413 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1414 | ||
1415 | char ** | |
fba45db2 | 1416 | complete_on_cmdlist (struct cmd_list_element *list, char *text, char *word) |
c906108c SS |
1417 | { |
1418 | struct cmd_list_element *ptr; | |
1419 | char **matchlist; | |
1420 | int sizeof_matchlist; | |
1421 | int matches; | |
1422 | int textlen = strlen (text); | |
1423 | ||
1424 | sizeof_matchlist = 10; | |
1425 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1426 | matches = 0; | |
1427 | ||
1428 | for (ptr = list; ptr; ptr = ptr->next) | |
1429 | if (!strncmp (ptr->name, text, textlen) | |
1430 | && !ptr->abbrev_flag | |
9f60d481 | 1431 | && (ptr->func |
c906108c SS |
1432 | || ptr->prefixlist)) |
1433 | { | |
1434 | if (matches == sizeof_matchlist) | |
1435 | { | |
1436 | sizeof_matchlist *= 2; | |
c5aa993b | 1437 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1438 | (sizeof_matchlist |
1439 | * sizeof (char *))); | |
1440 | } | |
1441 | ||
c5aa993b | 1442 | matchlist[matches] = (char *) |
c906108c SS |
1443 | xmalloc (strlen (word) + strlen (ptr->name) + 1); |
1444 | if (word == text) | |
1445 | strcpy (matchlist[matches], ptr->name); | |
1446 | else if (word > text) | |
1447 | { | |
1448 | /* Return some portion of ptr->name. */ | |
1449 | strcpy (matchlist[matches], ptr->name + (word - text)); | |
1450 | } | |
1451 | else | |
1452 | { | |
1453 | /* Return some of text plus ptr->name. */ | |
1454 | strncpy (matchlist[matches], word, text - word); | |
1455 | matchlist[matches][text - word] = '\0'; | |
1456 | strcat (matchlist[matches], ptr->name); | |
1457 | } | |
1458 | ++matches; | |
1459 | } | |
1460 | ||
1461 | if (matches == 0) | |
1462 | { | |
b8c9b27d | 1463 | xfree (matchlist); |
c906108c SS |
1464 | matchlist = 0; |
1465 | } | |
1466 | else | |
1467 | { | |
c5aa993b JM |
1468 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1469 | * sizeof (char *))); | |
c906108c SS |
1470 | matchlist[matches] = (char *) 0; |
1471 | } | |
1472 | ||
1473 | return matchlist; | |
1474 | } | |
1475 | ||
1476 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
1477 | ||
1478 | /* Return a vector of char pointers which point to the different | |
1479 | possible completions in CMD of TEXT. | |
1480 | ||
1481 | WORD points in the same buffer as TEXT, and completions should be | |
1482 | returned relative to this position. For example, suppose TEXT is "foo" | |
1483 | and we want to complete to "foobar". If WORD is "oo", return | |
1484 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1485 | ||
1486 | char ** | |
53904c9e AC |
1487 | complete_on_enum (const char *enumlist[], |
1488 | char *text, | |
1489 | char *word) | |
c906108c SS |
1490 | { |
1491 | char **matchlist; | |
1492 | int sizeof_matchlist; | |
1493 | int matches; | |
1494 | int textlen = strlen (text); | |
1495 | int i; | |
53904c9e | 1496 | const char *name; |
c906108c SS |
1497 | |
1498 | sizeof_matchlist = 10; | |
1499 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1500 | matches = 0; | |
1501 | ||
1502 | for (i = 0; (name = enumlist[i]) != NULL; i++) | |
1503 | if (strncmp (name, text, textlen) == 0) | |
1504 | { | |
1505 | if (matches == sizeof_matchlist) | |
1506 | { | |
1507 | sizeof_matchlist *= 2; | |
c5aa993b | 1508 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1509 | (sizeof_matchlist |
1510 | * sizeof (char *))); | |
1511 | } | |
1512 | ||
c5aa993b | 1513 | matchlist[matches] = (char *) |
c906108c SS |
1514 | xmalloc (strlen (word) + strlen (name) + 1); |
1515 | if (word == text) | |
1516 | strcpy (matchlist[matches], name); | |
1517 | else if (word > text) | |
1518 | { | |
1519 | /* Return some portion of name. */ | |
1520 | strcpy (matchlist[matches], name + (word - text)); | |
1521 | } | |
1522 | else | |
1523 | { | |
1524 | /* Return some of text plus name. */ | |
1525 | strncpy (matchlist[matches], word, text - word); | |
1526 | matchlist[matches][text - word] = '\0'; | |
1527 | strcat (matchlist[matches], name); | |
1528 | } | |
1529 | ++matches; | |
1530 | } | |
1531 | ||
1532 | if (matches == 0) | |
1533 | { | |
b8c9b27d | 1534 | xfree (matchlist); |
c906108c SS |
1535 | matchlist = 0; |
1536 | } | |
1537 | else | |
1538 | { | |
c5aa993b JM |
1539 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1540 | * sizeof (char *))); | |
c906108c SS |
1541 | matchlist[matches] = (char *) 0; |
1542 | } | |
1543 | ||
1544 | return matchlist; | |
1545 | } | |
1546 | ||
f436dd25 MH |
1547 | |
1548 | /* check function pointer */ | |
1549 | int | |
1550 | cmd_func_p (struct cmd_list_element *cmd) | |
1551 | { | |
1552 | return (cmd->func != NULL); | |
1553 | } | |
1554 | ||
1555 | ||
1556 | /* call the command function */ | |
1557 | void | |
1558 | cmd_func (struct cmd_list_element *cmd, char *args, int from_tty) | |
1559 | { | |
1560 | if (cmd_func_p (cmd)) | |
1561 | (*cmd->func) (cmd, args, from_tty); | |
1562 | else | |
1563 | error ("Invalid command"); | |
1564 | } | |
1565 | ||
1566 |