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Commit | Line | Data |
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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" |
d318976c | 25 | |
8b93c638 | 26 | #include "ui-out.h" |
c906108c | 27 | |
d318976c FN |
28 | #include "cli/cli-cmds.h" |
29 | #include "cli/cli-decode.h" | |
53a5351d | 30 | |
b2875cc0 AC |
31 | #include "gdb_assert.h" |
32 | ||
c906108c SS |
33 | /* Prototypes for local functions */ |
34 | ||
a14ed312 | 35 | static void undef_cmd_error (char *, char *); |
c906108c | 36 | |
a14ed312 KB |
37 | static struct cmd_list_element *find_cmd (char *command, |
38 | int len, | |
39 | struct cmd_list_element *clist, | |
40 | int ignore_help_classes, | |
41 | int *nfound); | |
6837a0a2 | 42 | |
c85871a3 | 43 | static void help_all (struct ui_file *stream); |
d318976c | 44 | \f |
9f60d481 AC |
45 | /* Set the callback function for the specified command. For each both |
46 | the commands callback and func() are set. The latter set to a | |
47 | bounce function (unless cfunc / sfunc is NULL that is). */ | |
48 | ||
49 | static void | |
50 | do_cfunc (struct cmd_list_element *c, char *args, int from_tty) | |
51 | { | |
52 | c->function.cfunc (args, from_tty); /* Ok. */ | |
53 | } | |
54 | ||
55 | void | |
9773a94b | 56 | set_cmd_cfunc (struct cmd_list_element *cmd, cmd_cfunc_ftype *cfunc) |
9f60d481 AC |
57 | { |
58 | if (cfunc == NULL) | |
59 | cmd->func = NULL; | |
60 | else | |
61 | cmd->func = do_cfunc; | |
62 | cmd->function.cfunc = cfunc; /* Ok. */ | |
63 | } | |
64 | ||
65 | static void | |
66 | do_sfunc (struct cmd_list_element *c, char *args, int from_tty) | |
67 | { | |
68 | c->function.sfunc (args, from_tty, c); /* Ok. */ | |
69 | } | |
70 | ||
71 | void | |
9773a94b | 72 | set_cmd_sfunc (struct cmd_list_element *cmd, cmd_sfunc_ftype *sfunc) |
9f60d481 AC |
73 | { |
74 | if (sfunc == NULL) | |
75 | cmd->func = NULL; | |
76 | else | |
77 | cmd->func = do_sfunc; | |
78 | cmd->function.sfunc = sfunc; /* Ok. */ | |
79 | } | |
80 | ||
bbaca940 AC |
81 | int |
82 | cmd_cfunc_eq (struct cmd_list_element *cmd, | |
83 | void (*cfunc) (char *args, int from_tty)) | |
84 | { | |
85 | return cmd->func == do_cfunc && cmd->function.cfunc == cfunc; | |
86 | } | |
87 | ||
7d0766f3 AC |
88 | void |
89 | set_cmd_context (struct cmd_list_element *cmd, void *context) | |
90 | { | |
91 | cmd->context = context; | |
92 | } | |
93 | ||
94 | void * | |
95 | get_cmd_context (struct cmd_list_element *cmd) | |
96 | { | |
97 | return cmd->context; | |
98 | } | |
99 | ||
1868c04e AC |
100 | enum cmd_types |
101 | cmd_type (struct cmd_list_element *cmd) | |
102 | { | |
103 | return cmd->type; | |
104 | } | |
105 | ||
5ba2abeb AC |
106 | void |
107 | set_cmd_completer (struct cmd_list_element *cmd, | |
108 | char **(*completer) (char *text, char *word)) | |
109 | { | |
110 | cmd->completer = completer; /* Ok. */ | |
111 | } | |
112 | ||
9f60d481 | 113 | |
c906108c SS |
114 | /* Add element named NAME. |
115 | CLASS is the top level category into which commands are broken down | |
116 | for "help" purposes. | |
117 | FUN should be the function to execute the command; | |
118 | it will get a character string as argument, with leading | |
119 | and trailing blanks already eliminated. | |
120 | ||
121 | DOC is a documentation string for the command. | |
122 | Its first line should be a complete sentence. | |
123 | It should start with ? for a command that is an abbreviation | |
124 | or with * for a command that most users don't need to know about. | |
125 | ||
126 | Add this command to command list *LIST. | |
127 | ||
128 | Returns a pointer to the added command (not necessarily the head | |
129 | of *LIST). */ | |
130 | ||
131 | struct cmd_list_element * | |
af1c1752 KB |
132 | add_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
133 | char *doc, struct cmd_list_element **list) | |
c906108c SS |
134 | { |
135 | register struct cmd_list_element *c | |
c5aa993b | 136 | = (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); |
c906108c SS |
137 | struct cmd_list_element *p; |
138 | ||
139 | delete_cmd (name, list); | |
140 | ||
494b7ec9 | 141 | if (*list == NULL || strcmp ((*list)->name, name) >= 0) |
c906108c SS |
142 | { |
143 | c->next = *list; | |
144 | *list = c; | |
145 | } | |
146 | else | |
147 | { | |
148 | p = *list; | |
494b7ec9 | 149 | while (p->next && strcmp (p->next->name, name) <= 0) |
c5aa993b JM |
150 | { |
151 | p = p->next; | |
152 | } | |
c906108c SS |
153 | c->next = p->next; |
154 | p->next = c; | |
155 | } | |
156 | ||
157 | c->name = name; | |
158 | c->class = class; | |
9f60d481 | 159 | set_cmd_cfunc (c, fun); |
7d0766f3 | 160 | set_cmd_context (c, NULL); |
c906108c | 161 | c->doc = doc; |
56382845 FN |
162 | c->flags = 0; |
163 | c->replacement = NULL; | |
47724592 | 164 | c->pre_show_hook = NULL; |
73bc900d FN |
165 | c->hook_pre = NULL; |
166 | c->hook_post = NULL; | |
167 | c->hook_in = 0; | |
c906108c SS |
168 | c->prefixlist = NULL; |
169 | c->prefixname = NULL; | |
170 | c->allow_unknown = 0; | |
171 | c->abbrev_flag = 0; | |
5ba2abeb | 172 | set_cmd_completer (c, make_symbol_completion_list); |
c906108c SS |
173 | c->type = not_set_cmd; |
174 | c->var = NULL; | |
175 | c->var_type = var_boolean; | |
176 | c->enums = NULL; | |
177 | c->user_commands = NULL; | |
73bc900d FN |
178 | c->hookee_pre = NULL; |
179 | c->hookee_post = NULL; | |
c906108c SS |
180 | c->cmd_pointer = NULL; |
181 | ||
182 | return c; | |
183 | } | |
184 | ||
69da3468 FN |
185 | /* Same as above, except that the abbrev_flag is set. */ |
186 | /* Note: Doesn't seem to be used anywhere currently. */ | |
187 | ||
188 | struct cmd_list_element * | |
189 | add_abbrev_cmd (char *name, enum command_class class, void (*fun) (char *, int), | |
190 | char *doc, struct cmd_list_element **list) | |
191 | { | |
192 | register struct cmd_list_element *c | |
193 | = add_cmd (name, class, fun, doc, list); | |
194 | ||
195 | c->abbrev_flag = 1; | |
196 | return c; | |
197 | } | |
56382845 FN |
198 | |
199 | /* Deprecates a command CMD. | |
200 | REPLACEMENT is the name of the command which should be used in place | |
201 | of this command, or NULL if no such command exists. | |
202 | ||
203 | This function does not check to see if command REPLACEMENT exists | |
204 | since gdb may not have gotten around to adding REPLACEMENT when this | |
205 | function is called. | |
206 | ||
207 | Returns a pointer to the deprecated command. */ | |
208 | ||
209 | struct cmd_list_element * | |
fba45db2 | 210 | deprecate_cmd (struct cmd_list_element *cmd, char *replacement) |
56382845 FN |
211 | { |
212 | cmd->flags |= (CMD_DEPRECATED | DEPRECATED_WARN_USER); | |
213 | ||
214 | if (replacement != NULL) | |
215 | cmd->replacement = replacement; | |
216 | else | |
217 | cmd->replacement = NULL; | |
218 | ||
219 | return cmd; | |
220 | } | |
221 | ||
c906108c | 222 | struct cmd_list_element * |
fba45db2 KB |
223 | add_alias_cmd (char *name, char *oldname, enum command_class class, |
224 | int abbrev_flag, struct cmd_list_element **list) | |
c906108c SS |
225 | { |
226 | /* Must do this since lookup_cmd tries to side-effect its first arg */ | |
227 | char *copied_name; | |
228 | register struct cmd_list_element *old; | |
229 | register struct cmd_list_element *c; | |
230 | copied_name = (char *) alloca (strlen (oldname) + 1); | |
231 | strcpy (copied_name, oldname); | |
c5aa993b | 232 | old = lookup_cmd (&copied_name, *list, "", 1, 1); |
c906108c SS |
233 | |
234 | if (old == 0) | |
235 | { | |
236 | delete_cmd (name, list); | |
237 | return 0; | |
238 | } | |
239 | ||
9f60d481 AC |
240 | c = add_cmd (name, class, NULL, old->doc, list); |
241 | /* NOTE: Both FUNC and all the FUNCTIONs need to be copied. */ | |
242 | c->func = old->func; | |
243 | c->function = old->function; | |
c906108c SS |
244 | c->prefixlist = old->prefixlist; |
245 | c->prefixname = old->prefixname; | |
246 | c->allow_unknown = old->allow_unknown; | |
247 | c->abbrev_flag = abbrev_flag; | |
248 | c->cmd_pointer = old; | |
249 | return c; | |
250 | } | |
251 | ||
252 | /* Like add_cmd but adds an element for a command prefix: | |
253 | a name that should be followed by a subcommand to be looked up | |
254 | in another command list. PREFIXLIST should be the address | |
255 | of the variable containing that list. */ | |
256 | ||
257 | struct cmd_list_element * | |
af1c1752 KB |
258 | add_prefix_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
259 | char *doc, struct cmd_list_element **prefixlist, | |
260 | char *prefixname, int allow_unknown, | |
261 | struct cmd_list_element **list) | |
c906108c SS |
262 | { |
263 | register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); | |
264 | c->prefixlist = prefixlist; | |
265 | c->prefixname = prefixname; | |
266 | c->allow_unknown = allow_unknown; | |
267 | return c; | |
268 | } | |
269 | ||
270 | /* Like add_prefix_cmd but sets the abbrev_flag on the new command. */ | |
c5aa993b | 271 | |
c906108c | 272 | struct cmd_list_element * |
af1c1752 KB |
273 | add_abbrev_prefix_cmd (char *name, enum command_class class, |
274 | void (*fun) (char *, int), char *doc, | |
275 | struct cmd_list_element **prefixlist, char *prefixname, | |
276 | int allow_unknown, struct cmd_list_element **list) | |
c906108c SS |
277 | { |
278 | register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); | |
279 | c->prefixlist = prefixlist; | |
280 | c->prefixname = prefixname; | |
281 | c->allow_unknown = allow_unknown; | |
282 | c->abbrev_flag = 1; | |
283 | return c; | |
284 | } | |
285 | ||
286 | /* This is an empty "cfunc". */ | |
287 | void | |
fba45db2 | 288 | not_just_help_class_command (char *args, int from_tty) |
c906108c SS |
289 | { |
290 | } | |
291 | ||
292 | /* This is an empty "sfunc". */ | |
a14ed312 | 293 | static void empty_sfunc (char *, int, struct cmd_list_element *); |
c906108c SS |
294 | |
295 | static void | |
fba45db2 | 296 | empty_sfunc (char *args, int from_tty, struct cmd_list_element *c) |
c906108c SS |
297 | { |
298 | } | |
299 | ||
b2875cc0 | 300 | /* Add element named NAME to command list LIST (the list for set/show |
c906108c | 301 | or some sublist thereof). |
b2875cc0 | 302 | TYPE is set_cmd or show_cmd. |
c906108c SS |
303 | CLASS is as in add_cmd. |
304 | VAR_TYPE is the kind of thing we are setting. | |
305 | VAR is address of the variable being controlled by this command. | |
306 | DOC is the documentation string. */ | |
307 | ||
b2875cc0 AC |
308 | static struct cmd_list_element * |
309 | add_set_or_show_cmd (char *name, | |
310 | enum cmd_types type, | |
311 | enum command_class class, | |
312 | var_types var_type, | |
313 | void *var, | |
314 | char *doc, | |
315 | struct cmd_list_element **list) | |
c906108c | 316 | { |
e00d1dc8 | 317 | struct cmd_list_element *c = add_cmd (name, class, NULL, doc, list); |
b2875cc0 AC |
318 | gdb_assert (type == set_cmd || type == show_cmd); |
319 | c->type = type; | |
c906108c SS |
320 | c->var_type = var_type; |
321 | c->var = var; | |
e00d1dc8 | 322 | /* This needs to be something besides NULL so that this isn't |
c906108c | 323 | treated as a help class. */ |
9f60d481 | 324 | set_cmd_sfunc (c, empty_sfunc); |
c906108c SS |
325 | return c; |
326 | } | |
327 | ||
e707bbc2 AC |
328 | /* Add element named NAME to both the command SET_LIST and SHOW_LIST. |
329 | CLASS is as in add_cmd. VAR_TYPE is the kind of thing we are | |
330 | setting. VAR is address of the variable being controlled by this | |
331 | command. SET_FUNC and SHOW_FUNC are the callback functions (if | |
9f064c95 TT |
332 | non-NULL). SET_DOC and SHOW_DOC are the documentation strings. |
333 | SET_RESULT and SHOW_RESULT, if not NULL, are set to the resulting | |
334 | command structures. */ | |
e707bbc2 | 335 | |
9f064c95 TT |
336 | void |
337 | add_setshow_cmd_full (char *name, | |
338 | enum command_class class, | |
339 | var_types var_type, void *var, | |
340 | char *set_doc, char *show_doc, | |
341 | cmd_sfunc_ftype *set_func, cmd_sfunc_ftype *show_func, | |
342 | struct cmd_list_element **set_list, | |
343 | struct cmd_list_element **show_list, | |
344 | struct cmd_list_element **set_result, | |
345 | struct cmd_list_element **show_result) | |
e707bbc2 AC |
346 | { |
347 | struct cmd_list_element *set; | |
348 | struct cmd_list_element *show; | |
349 | set = add_set_or_show_cmd (name, set_cmd, class, var_type, var, | |
350 | set_doc, set_list); | |
351 | if (set_func != NULL) | |
352 | set_cmd_sfunc (set, set_func); | |
353 | show = add_set_or_show_cmd (name, show_cmd, class, var_type, var, | |
354 | show_doc, show_list); | |
355 | if (show_func != NULL) | |
356 | set_cmd_sfunc (show, show_func); | |
9f064c95 TT |
357 | |
358 | if (set_result != NULL) | |
359 | *set_result = set; | |
360 | if (show_result != NULL) | |
361 | *show_result = show; | |
362 | } | |
363 | ||
364 | /* Add element named NAME to both the command SET_LIST and SHOW_LIST. | |
365 | CLASS is as in add_cmd. VAR_TYPE is the kind of thing we are | |
366 | setting. VAR is address of the variable being controlled by this | |
367 | command. SET_FUNC and SHOW_FUNC are the callback functions (if | |
368 | non-NULL). SET_DOC and SHOW_DOC are the documentation strings. */ | |
369 | ||
370 | void | |
371 | add_setshow_cmd (char *name, | |
372 | enum command_class class, | |
373 | var_types var_type, void *var, | |
374 | char *set_doc, char *show_doc, | |
375 | cmd_sfunc_ftype *set_func, cmd_sfunc_ftype *show_func, | |
376 | struct cmd_list_element **set_list, | |
377 | struct cmd_list_element **show_list) | |
378 | { | |
379 | add_setshow_cmd_full (name, class, var_type, var, set_doc, show_doc, | |
380 | set_func, show_func, set_list, show_list, | |
381 | NULL, NULL); | |
e707bbc2 | 382 | } |
b2875cc0 AC |
383 | |
384 | struct cmd_list_element * | |
385 | add_set_cmd (char *name, | |
386 | enum command_class class, | |
387 | var_types var_type, | |
388 | void *var, | |
389 | char *doc, | |
390 | struct cmd_list_element **list) | |
391 | { | |
392 | return add_set_or_show_cmd (name, set_cmd, class, var_type, var, doc, list); | |
393 | } | |
394 | ||
c906108c SS |
395 | /* Add element named NAME to command list LIST (the list for set |
396 | or some sublist thereof). | |
397 | CLASS is as in add_cmd. | |
398 | ENUMLIST is a list of strings which may follow NAME. | |
399 | VAR is address of the variable which will contain the matching string | |
c5aa993b | 400 | (from ENUMLIST). |
c906108c SS |
401 | DOC is the documentation string. */ |
402 | ||
403 | struct cmd_list_element * | |
1ed2a135 AC |
404 | add_set_enum_cmd (char *name, |
405 | enum command_class class, | |
53904c9e AC |
406 | const char *enumlist[], |
407 | const char **var, | |
1ed2a135 AC |
408 | char *doc, |
409 | struct cmd_list_element **list) | |
c906108c SS |
410 | { |
411 | struct cmd_list_element *c | |
c5aa993b | 412 | = add_set_cmd (name, class, var_enum, var, doc, list); |
c906108c SS |
413 | c->enums = enumlist; |
414 | ||
415 | return c; | |
416 | } | |
417 | ||
e9e68a56 AC |
418 | /* Add an auto-boolean command named NAME to both the set and show |
419 | command list lists. CLASS is as in add_cmd. VAR is address of the | |
420 | variable which will contain the value. DOC is the documentation | |
421 | string. FUNC is the corresponding callback. */ | |
422 | void | |
423 | add_setshow_auto_boolean_cmd (char *name, | |
424 | enum command_class class, | |
425 | enum auto_boolean *var, | |
426 | char *set_doc, char *show_doc, | |
427 | cmd_sfunc_ftype *set_func, | |
428 | cmd_sfunc_ftype *show_func, | |
429 | struct cmd_list_element **set_list, | |
430 | struct cmd_list_element **show_list) | |
97c3646f AC |
431 | { |
432 | static const char *auto_boolean_enums[] = { "on", "off", "auto", NULL }; | |
433 | struct cmd_list_element *c; | |
9f064c95 TT |
434 | add_setshow_cmd_full (name, class, var_auto_boolean, var, |
435 | set_doc, show_doc, set_func, show_func, | |
436 | set_list, show_list, | |
437 | &c, NULL); | |
97c3646f | 438 | c->enums = auto_boolean_enums; |
97c3646f AC |
439 | } |
440 | ||
e707bbc2 AC |
441 | /* Add element named NAME to both the set and show command LISTs (the |
442 | list for set/show or some sublist thereof). CLASS is as in | |
443 | add_cmd. VAR is address of the variable which will contain the | |
444 | value. SET_DOC and SHOW_DOR are the documentation strings. */ | |
445 | void | |
446 | add_setshow_boolean_cmd (char *name, | |
447 | enum command_class class, | |
448 | int *var, char *set_doc, char *show_doc, | |
449 | cmd_sfunc_ftype *set_func, | |
450 | cmd_sfunc_ftype *show_func, | |
451 | struct cmd_list_element **set_list, | |
452 | struct cmd_list_element **show_list) | |
f3796e26 AC |
453 | { |
454 | static const char *boolean_enums[] = { "on", "off", NULL }; | |
455 | struct cmd_list_element *c; | |
9f064c95 TT |
456 | add_setshow_cmd_full (name, class, var_boolean, var, |
457 | set_doc, show_doc, | |
458 | set_func, show_func, | |
459 | set_list, show_list, | |
460 | &c, NULL); | |
f3796e26 | 461 | c->enums = boolean_enums; |
f3796e26 AC |
462 | } |
463 | ||
c906108c | 464 | /* Where SETCMD has already been added, add the corresponding show |
b2875cc0 | 465 | command to LIST and return a pointer to the added command (not |
c906108c | 466 | necessarily the head of LIST). */ |
b2875cc0 | 467 | /* NOTE: cagney/2002-03-17: The original version of add_show_from_set |
c0e624e7 | 468 | used memcpy() to clone `set' into `show'. This meant that in |
b2875cc0 AC |
469 | addition to all the needed fields (var, name, et.al.) some |
470 | unnecessary fields were copied (namely the callback function). The | |
471 | function explictly copies relevant fields. For a `set' and `show' | |
472 | command to share the same callback, the caller must set both | |
473 | explicitly. */ | |
c906108c | 474 | struct cmd_list_element * |
fba45db2 KB |
475 | add_show_from_set (struct cmd_list_element *setcmd, |
476 | struct cmd_list_element **list) | |
c906108c | 477 | { |
b2875cc0 AC |
478 | char *doc; |
479 | const static char setstring[] = "Set "; | |
c5aa993b | 480 | |
b2875cc0 AC |
481 | /* Create a doc string by replacing "Set " at the start of the |
482 | `set'' command's doco with "Show ". */ | |
483 | gdb_assert (strncmp (setcmd->doc, setstring, sizeof (setstring) - 1) == 0); | |
484 | doc = concat ("Show ", setcmd->doc + sizeof (setstring) - 1, NULL); | |
c906108c | 485 | |
b2875cc0 AC |
486 | /* Insert the basic command. */ |
487 | return add_set_or_show_cmd (setcmd->name, show_cmd, setcmd->class, | |
488 | setcmd->var_type, setcmd->var, doc, list); | |
c906108c SS |
489 | } |
490 | ||
491 | /* Remove the command named NAME from the command list. */ | |
492 | ||
493 | void | |
fba45db2 | 494 | delete_cmd (char *name, struct cmd_list_element **list) |
c906108c SS |
495 | { |
496 | register struct cmd_list_element *c; | |
497 | struct cmd_list_element *p; | |
498 | ||
499 | while (*list && STREQ ((*list)->name, name)) | |
500 | { | |
73bc900d FN |
501 | if ((*list)->hookee_pre) |
502 | (*list)->hookee_pre->hook_pre = 0; /* Hook slips out of its mouth */ | |
503 | if ((*list)->hookee_post) | |
504 | (*list)->hookee_post->hook_post = 0; /* Hook slips out of its bottom */ | |
c906108c | 505 | p = (*list)->next; |
b8c9b27d | 506 | xfree (* list); |
c906108c SS |
507 | *list = p; |
508 | } | |
509 | ||
510 | if (*list) | |
511 | for (c = *list; c->next;) | |
512 | { | |
513 | if (STREQ (c->next->name, name)) | |
514 | { | |
73bc900d FN |
515 | if (c->next->hookee_pre) |
516 | c->next->hookee_pre->hook_pre = 0; /* hooked cmd gets away. */ | |
517 | if (c->next->hookee_post) | |
518 | c->next->hookee_post->hook_post = 0; /* remove post hook */ | |
519 | /* :( no fishing metaphore */ | |
c906108c | 520 | p = c->next->next; |
b8c9b27d | 521 | xfree (c->next); |
c906108c SS |
522 | c->next = p; |
523 | } | |
524 | else | |
525 | c = c->next; | |
526 | } | |
527 | } | |
d318976c FN |
528 | \f |
529 | /* Shorthands to the commands above. */ | |
530 | ||
531 | /* Add an element to the list of info subcommands. */ | |
532 | ||
533 | struct cmd_list_element * | |
534 | add_info (char *name, void (*fun) (char *, int), char *doc) | |
535 | { | |
536 | return add_cmd (name, no_class, fun, doc, &infolist); | |
537 | } | |
538 | ||
539 | /* Add an alias to the list of info subcommands. */ | |
540 | ||
541 | struct cmd_list_element * | |
542 | add_info_alias (char *name, char *oldname, int abbrev_flag) | |
543 | { | |
544 | return add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
545 | } | |
546 | ||
547 | /* Add an element to the list of commands. */ | |
548 | ||
549 | struct cmd_list_element * | |
550 | add_com (char *name, enum command_class class, void (*fun) (char *, int), | |
551 | char *doc) | |
552 | { | |
553 | return add_cmd (name, class, fun, doc, &cmdlist); | |
554 | } | |
555 | ||
556 | /* Add an alias or abbreviation command to the list of commands. */ | |
557 | ||
558 | struct cmd_list_element * | |
559 | add_com_alias (char *name, char *oldname, enum command_class class, | |
560 | int abbrev_flag) | |
561 | { | |
562 | return add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
563 | } | |
564 | \f | |
6837a0a2 DB |
565 | /* Recursively walk the commandlist structures, and print out the |
566 | documentation of commands that match our regex in either their | |
567 | name, or their documentation. | |
568 | */ | |
d318976c FN |
569 | void |
570 | apropos_cmd (struct ui_file *stream, struct cmd_list_element *commandlist, | |
6837a0a2 DB |
571 | struct re_pattern_buffer *regex, char *prefix) |
572 | { | |
573 | register struct cmd_list_element *c; | |
574 | int returnvalue=1; /*Needed to avoid double printing*/ | |
575 | /* Walk through the commands */ | |
576 | for (c=commandlist;c;c=c->next) | |
577 | { | |
578 | if (c->name != NULL) | |
579 | { | |
580 | /* Try to match against the name*/ | |
581 | returnvalue=re_search(regex,c->name,strlen(c->name),0,strlen(c->name),NULL); | |
582 | if (returnvalue >= 0) | |
583 | { | |
584 | /* Stolen from help_cmd_list. We don't directly use | |
585 | * help_cmd_list because it doesn't let us print out | |
586 | * single commands | |
587 | */ | |
588 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
589 | print_doc_line (stream, c->doc); | |
590 | fputs_filtered ("\n", stream); | |
591 | returnvalue=0; /*Set this so we don't print it again.*/ | |
592 | } | |
593 | } | |
594 | if (c->doc != NULL && returnvalue != 0) | |
595 | { | |
596 | /* Try to match against documentation */ | |
597 | if (re_search(regex,c->doc,strlen(c->doc),0,strlen(c->doc),NULL) >=0) | |
598 | { | |
599 | /* Stolen from help_cmd_list. We don't directly use | |
600 | * help_cmd_list because it doesn't let us print out | |
601 | * single commands | |
602 | */ | |
603 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
604 | print_doc_line (stream, c->doc); | |
605 | fputs_filtered ("\n", stream); | |
606 | } | |
607 | } | |
608 | /* Check if this command has subcommands */ | |
609 | if (c->prefixlist != NULL) | |
610 | { | |
611 | /* Recursively call ourselves on the subcommand list, | |
612 | passing the right prefix in. | |
613 | */ | |
d318976c | 614 | apropos_cmd (stream,*c->prefixlist,regex,c->prefixname); |
6837a0a2 DB |
615 | } |
616 | } | |
617 | } | |
c906108c SS |
618 | |
619 | /* This command really has to deal with two things: | |
620 | * 1) I want documentation on *this string* (usually called by | |
621 | * "help commandname"). | |
622 | * 2) I want documentation on *this list* (usually called by | |
623 | * giving a command that requires subcommands. Also called by saying | |
624 | * just "help".) | |
625 | * | |
626 | * I am going to split this into two seperate comamnds, help_cmd and | |
627 | * help_list. | |
628 | */ | |
629 | ||
630 | void | |
fba45db2 | 631 | help_cmd (char *command, struct ui_file *stream) |
c906108c SS |
632 | { |
633 | struct cmd_list_element *c; | |
634 | extern struct cmd_list_element *cmdlist; | |
635 | ||
636 | if (!command) | |
637 | { | |
638 | help_list (cmdlist, "", all_classes, stream); | |
639 | return; | |
640 | } | |
641 | ||
49a5a3a3 GM |
642 | if (strcmp (command, "all") == 0) |
643 | { | |
644 | help_all (stream); | |
645 | return; | |
646 | } | |
647 | ||
c906108c SS |
648 | c = lookup_cmd (&command, cmdlist, "", 0, 0); |
649 | ||
650 | if (c == 0) | |
651 | return; | |
652 | ||
653 | /* There are three cases here. | |
654 | If c->prefixlist is nonzero, we have a prefix command. | |
655 | Print its documentation, then list its subcommands. | |
c5aa993b | 656 | |
9f60d481 AC |
657 | If c->func is non NULL, we really have a command. Print its |
658 | documentation and return. | |
c5aa993b | 659 | |
9f60d481 AC |
660 | If c->func is NULL, we have a class name. Print its |
661 | documentation (as if it were a command) and then set class to the | |
662 | number of this class so that the commands in the class will be | |
663 | listed. */ | |
c906108c SS |
664 | |
665 | fputs_filtered (c->doc, stream); | |
666 | fputs_filtered ("\n", stream); | |
667 | ||
9f60d481 | 668 | if (c->prefixlist == 0 && c->func != NULL) |
c906108c SS |
669 | return; |
670 | fprintf_filtered (stream, "\n"); | |
671 | ||
672 | /* If this is a prefix command, print it's subcommands */ | |
673 | if (c->prefixlist) | |
674 | help_list (*c->prefixlist, c->prefixname, all_commands, stream); | |
675 | ||
676 | /* If this is a class name, print all of the commands in the class */ | |
9f60d481 | 677 | if (c->func == NULL) |
c906108c SS |
678 | help_list (cmdlist, "", c->class, stream); |
679 | ||
73bc900d FN |
680 | if (c->hook_pre || c->hook_post) |
681 | fprintf_filtered (stream, | |
682 | "\nThis command has a hook (or hooks) defined:\n"); | |
683 | ||
684 | if (c->hook_pre) | |
685 | fprintf_filtered (stream, | |
686 | "\tThis command is run after : %s (pre hook)\n", | |
687 | c->hook_pre->name); | |
688 | if (c->hook_post) | |
689 | fprintf_filtered (stream, | |
690 | "\tThis command is run before : %s (post hook)\n", | |
691 | c->hook_post->name); | |
c906108c SS |
692 | } |
693 | ||
694 | /* | |
695 | * Get a specific kind of help on a command list. | |
696 | * | |
697 | * LIST is the list. | |
698 | * CMDTYPE is the prefix to use in the title string. | |
699 | * CLASS is the class with which to list the nodes of this list (see | |
700 | * documentation for help_cmd_list below), As usual, ALL_COMMANDS for | |
701 | * everything, ALL_CLASSES for just classes, and non-negative for only things | |
702 | * in a specific class. | |
703 | * and STREAM is the output stream on which to print things. | |
704 | * If you call this routine with a class >= 0, it recurses. | |
705 | */ | |
706 | void | |
fba45db2 KB |
707 | help_list (struct cmd_list_element *list, char *cmdtype, |
708 | enum command_class class, struct ui_file *stream) | |
c906108c SS |
709 | { |
710 | int len; | |
711 | char *cmdtype1, *cmdtype2; | |
c5aa993b | 712 | |
c906108c SS |
713 | /* If CMDTYPE is "foo ", CMDTYPE1 gets " foo" and CMDTYPE2 gets "foo sub" */ |
714 | len = strlen (cmdtype); | |
715 | cmdtype1 = (char *) alloca (len + 1); | |
716 | cmdtype1[0] = 0; | |
717 | cmdtype2 = (char *) alloca (len + 4); | |
718 | cmdtype2[0] = 0; | |
719 | if (len) | |
720 | { | |
721 | cmdtype1[0] = ' '; | |
722 | strncpy (cmdtype1 + 1, cmdtype, len - 1); | |
723 | cmdtype1[len] = 0; | |
724 | strncpy (cmdtype2, cmdtype, len - 1); | |
725 | strcpy (cmdtype2 + len - 1, " sub"); | |
726 | } | |
727 | ||
728 | if (class == all_classes) | |
729 | fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2); | |
730 | else | |
731 | fprintf_filtered (stream, "List of %scommands:\n\n", cmdtype2); | |
732 | ||
c5aa993b | 733 | help_cmd_list (list, class, cmdtype, (int) class >= 0, stream); |
c906108c SS |
734 | |
735 | if (class == all_classes) | |
de74f71f MS |
736 | { |
737 | fprintf_filtered (stream, "\n\ | |
738 | Type \"help%s\" followed by a class name for a list of commands in ", | |
739 | cmdtype1); | |
740 | wrap_here (""); | |
741 | fprintf_filtered (stream, "that class."); | |
742 | } | |
c906108c | 743 | |
de74f71f | 744 | fprintf_filtered (stream, "\nType \"help%s\" followed by %scommand name ", |
c5aa993b | 745 | cmdtype1, cmdtype2); |
de74f71f MS |
746 | wrap_here (""); |
747 | fputs_filtered ("for ", stream); | |
748 | wrap_here (""); | |
749 | fputs_filtered ("full ", stream); | |
750 | wrap_here (""); | |
751 | fputs_filtered ("documentation.\n", stream); | |
752 | fputs_filtered ("Command name abbreviations are allowed if unambiguous.\n", | |
753 | stream); | |
c906108c | 754 | } |
c5aa993b | 755 | |
49a5a3a3 | 756 | static void |
c85871a3 | 757 | help_all (struct ui_file *stream) |
49a5a3a3 GM |
758 | { |
759 | struct cmd_list_element *c; | |
760 | extern struct cmd_list_element *cmdlist; | |
761 | ||
762 | for (c = cmdlist; c; c = c->next) | |
763 | { | |
764 | if (c->abbrev_flag) | |
765 | continue; | |
766 | /* If this is a prefix command, print it's subcommands */ | |
767 | if (c->prefixlist) | |
768 | help_cmd_list (*c->prefixlist, all_commands, c->prefixname, 0, stream); | |
769 | ||
770 | /* If this is a class name, print all of the commands in the class */ | |
9f60d481 | 771 | else if (c->func == NULL) |
49a5a3a3 GM |
772 | help_cmd_list (cmdlist, c->class, "", 0, stream); |
773 | } | |
774 | } | |
775 | ||
c906108c | 776 | /* Print only the first line of STR on STREAM. */ |
d318976c | 777 | void |
fba45db2 | 778 | print_doc_line (struct ui_file *stream, char *str) |
c906108c SS |
779 | { |
780 | static char *line_buffer = 0; | |
781 | static int line_size; | |
782 | register char *p; | |
783 | ||
784 | if (!line_buffer) | |
785 | { | |
786 | line_size = 80; | |
787 | line_buffer = (char *) xmalloc (line_size); | |
788 | } | |
789 | ||
790 | p = str; | |
791 | while (*p && *p != '\n' && *p != '.' && *p != ',') | |
792 | p++; | |
793 | if (p - str > line_size - 1) | |
794 | { | |
795 | line_size = p - str + 1; | |
b8c9b27d | 796 | xfree (line_buffer); |
c906108c SS |
797 | line_buffer = (char *) xmalloc (line_size); |
798 | } | |
799 | strncpy (line_buffer, str, p - str); | |
800 | line_buffer[p - str] = '\0'; | |
801 | if (islower (line_buffer[0])) | |
802 | line_buffer[0] = toupper (line_buffer[0]); | |
8b93c638 | 803 | ui_out_text (uiout, line_buffer); |
c906108c SS |
804 | } |
805 | ||
806 | /* | |
807 | * Implement a help command on command list LIST. | |
808 | * RECURSE should be non-zero if this should be done recursively on | |
809 | * all sublists of LIST. | |
810 | * PREFIX is the prefix to print before each command name. | |
811 | * STREAM is the stream upon which the output should be written. | |
812 | * CLASS should be: | |
c5aa993b | 813 | * A non-negative class number to list only commands in that |
c906108c | 814 | * class. |
c5aa993b JM |
815 | * ALL_COMMANDS to list all commands in list. |
816 | * ALL_CLASSES to list all classes in list. | |
c906108c SS |
817 | * |
818 | * Note that RECURSE will be active on *all* sublists, not just the | |
819 | * ones selected by the criteria above (ie. the selection mechanism | |
820 | * is at the low level, not the high-level). | |
821 | */ | |
822 | void | |
fba45db2 KB |
823 | help_cmd_list (struct cmd_list_element *list, enum command_class class, |
824 | char *prefix, int recurse, struct ui_file *stream) | |
c906108c SS |
825 | { |
826 | register struct cmd_list_element *c; | |
827 | ||
828 | for (c = list; c; c = c->next) | |
829 | { | |
830 | if (c->abbrev_flag == 0 && | |
831 | (class == all_commands | |
9f60d481 AC |
832 | || (class == all_classes && c->func == NULL) |
833 | || (class == c->class && c->func != NULL))) | |
c906108c SS |
834 | { |
835 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
836 | print_doc_line (stream, c->doc); | |
837 | fputs_filtered ("\n", stream); | |
838 | } | |
839 | if (recurse | |
840 | && c->prefixlist != 0 | |
841 | && c->abbrev_flag == 0) | |
842 | help_cmd_list (*c->prefixlist, class, c->prefixname, 1, stream); | |
843 | } | |
844 | } | |
c906108c | 845 | \f |
c5aa993b | 846 | |
c906108c SS |
847 | /* Search the input clist for 'command'. Return the command if |
848 | found (or NULL if not), and return the number of commands | |
849 | found in nfound */ | |
850 | ||
851 | static struct cmd_list_element * | |
fba45db2 KB |
852 | find_cmd (char *command, int len, struct cmd_list_element *clist, |
853 | int ignore_help_classes, int *nfound) | |
c906108c SS |
854 | { |
855 | struct cmd_list_element *found, *c; | |
856 | ||
c5aa993b | 857 | found = (struct cmd_list_element *) NULL; |
c906108c SS |
858 | *nfound = 0; |
859 | for (c = clist; c; c = c->next) | |
860 | if (!strncmp (command, c->name, len) | |
9f60d481 | 861 | && (!ignore_help_classes || c->func)) |
c906108c | 862 | { |
c5aa993b JM |
863 | found = c; |
864 | (*nfound)++; | |
865 | if (c->name[len] == '\0') | |
866 | { | |
867 | *nfound = 1; | |
868 | break; | |
869 | } | |
c906108c SS |
870 | } |
871 | return found; | |
872 | } | |
873 | ||
874 | /* This routine takes a line of TEXT and a CLIST in which to start the | |
875 | lookup. When it returns it will have incremented the text pointer past | |
876 | the section of text it matched, set *RESULT_LIST to point to the list in | |
877 | which the last word was matched, and will return a pointer to the cmd | |
878 | list element which the text matches. It will return NULL if no match at | |
879 | all was possible. It will return -1 (cast appropriately, ick) if ambigous | |
880 | matches are possible; in this case *RESULT_LIST will be set to point to | |
881 | the list in which there are ambiguous choices (and *TEXT will be set to | |
882 | the ambiguous text string). | |
883 | ||
884 | If the located command was an abbreviation, this routine returns the base | |
885 | command of the abbreviation. | |
886 | ||
887 | It does no error reporting whatsoever; control will always return | |
888 | to the superior routine. | |
889 | ||
890 | In the case of an ambiguous return (-1), *RESULT_LIST will be set to point | |
891 | at the prefix_command (ie. the best match) *or* (special case) will be NULL | |
892 | if no prefix command was ever found. For example, in the case of "info a", | |
893 | "info" matches without ambiguity, but "a" could be "args" or "address", so | |
894 | *RESULT_LIST is set to the cmd_list_element for "info". So in this case | |
895 | RESULT_LIST should not be interpeted as a pointer to the beginning of a | |
896 | list; it simply points to a specific command. In the case of an ambiguous | |
897 | return *TEXT is advanced past the last non-ambiguous prefix (e.g. | |
898 | "info t" can be "info types" or "info target"; upon return *TEXT has been | |
899 | advanced past "info "). | |
900 | ||
901 | If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise | |
902 | affect the operation). | |
903 | ||
904 | This routine does *not* modify the text pointed to by TEXT. | |
c5aa993b | 905 | |
c906108c SS |
906 | If IGNORE_HELP_CLASSES is nonzero, ignore any command list elements which |
907 | are actually help classes rather than commands (i.e. the function field of | |
908 | the struct cmd_list_element is NULL). */ | |
909 | ||
910 | struct cmd_list_element * | |
fba45db2 KB |
911 | lookup_cmd_1 (char **text, struct cmd_list_element *clist, |
912 | struct cmd_list_element **result_list, int ignore_help_classes) | |
c906108c SS |
913 | { |
914 | char *p, *command; | |
915 | int len, tmp, nfound; | |
916 | struct cmd_list_element *found, *c; | |
56382845 | 917 | char *line = *text; |
c906108c SS |
918 | |
919 | while (**text == ' ' || **text == '\t') | |
920 | (*text)++; | |
921 | ||
922 | /* Treating underscores as part of command words is important | |
923 | so that "set args_foo()" doesn't get interpreted as | |
924 | "set args _foo()". */ | |
925 | for (p = *text; | |
c5aa993b | 926 | *p && (isalnum (*p) || *p == '-' || *p == '_' || |
c906108c SS |
927 | (tui_version && |
928 | (*p == '+' || *p == '<' || *p == '>' || *p == '$')) || | |
929 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))); | |
930 | p++) | |
931 | ; | |
932 | ||
933 | /* If nothing but whitespace, return 0. */ | |
934 | if (p == *text) | |
935 | return 0; | |
c5aa993b | 936 | |
c906108c SS |
937 | len = p - *text; |
938 | ||
939 | /* *text and p now bracket the first command word to lookup (and | |
940 | it's length is len). We copy this into a local temporary */ | |
941 | ||
942 | ||
943 | command = (char *) alloca (len + 1); | |
944 | for (tmp = 0; tmp < len; tmp++) | |
945 | { | |
946 | char x = (*text)[tmp]; | |
947 | command[tmp] = x; | |
948 | } | |
949 | command[len] = '\0'; | |
950 | ||
951 | /* Look it up. */ | |
952 | found = 0; | |
953 | nfound = 0; | |
c5aa993b | 954 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); |
c906108c SS |
955 | |
956 | /* | |
c5aa993b JM |
957 | ** We didn't find the command in the entered case, so lower case it |
958 | ** and search again. | |
959 | */ | |
c906108c SS |
960 | if (!found || nfound == 0) |
961 | { | |
962 | for (tmp = 0; tmp < len; tmp++) | |
c5aa993b JM |
963 | { |
964 | char x = command[tmp]; | |
965 | command[tmp] = isupper (x) ? tolower (x) : x; | |
966 | } | |
967 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); | |
c906108c SS |
968 | } |
969 | ||
970 | /* If nothing matches, we have a simple failure. */ | |
971 | if (nfound == 0) | |
972 | return 0; | |
973 | ||
974 | if (nfound > 1) | |
975 | { | |
976 | if (result_list != NULL) | |
977 | /* Will be modified in calling routine | |
978 | if we know what the prefix command is. */ | |
c5aa993b JM |
979 | *result_list = 0; |
980 | return (struct cmd_list_element *) -1; /* Ambiguous. */ | |
c906108c SS |
981 | } |
982 | ||
983 | /* We've matched something on this list. Move text pointer forward. */ | |
984 | ||
985 | *text = p; | |
986 | ||
c906108c | 987 | if (found->cmd_pointer) |
56382845 FN |
988 | { |
989 | /* We drop the alias (abbreviation) in favor of the command it is | |
990 | pointing to. If the alias is deprecated, though, we need to | |
991 | warn the user about it before we drop it. Note that while we | |
992 | are warning about the alias, we may also warn about the command | |
993 | itself and we will adjust the appropriate DEPRECATED_WARN_USER | |
994 | flags */ | |
995 | ||
996 | if (found->flags & DEPRECATED_WARN_USER) | |
997 | deprecated_cmd_warning (&line); | |
998 | found = found->cmd_pointer; | |
999 | } | |
c906108c SS |
1000 | /* If we found a prefix command, keep looking. */ |
1001 | ||
1002 | if (found->prefixlist) | |
1003 | { | |
1004 | c = lookup_cmd_1 (text, *found->prefixlist, result_list, | |
1005 | ignore_help_classes); | |
1006 | if (!c) | |
1007 | { | |
1008 | /* Didn't find anything; this is as far as we got. */ | |
1009 | if (result_list != NULL) | |
1010 | *result_list = clist; | |
1011 | return found; | |
1012 | } | |
1013 | else if (c == (struct cmd_list_element *) -1) | |
1014 | { | |
1015 | /* We've gotten this far properly, but the next step | |
1016 | is ambiguous. We need to set the result list to the best | |
1017 | we've found (if an inferior hasn't already set it). */ | |
1018 | if (result_list != NULL) | |
1019 | if (!*result_list) | |
1020 | /* This used to say *result_list = *found->prefixlist | |
c5aa993b JM |
1021 | If that was correct, need to modify the documentation |
1022 | at the top of this function to clarify what is supposed | |
1023 | to be going on. */ | |
c906108c SS |
1024 | *result_list = found; |
1025 | return c; | |
1026 | } | |
1027 | else | |
1028 | { | |
1029 | /* We matched! */ | |
1030 | return c; | |
1031 | } | |
1032 | } | |
1033 | else | |
1034 | { | |
1035 | if (result_list != NULL) | |
1036 | *result_list = clist; | |
1037 | return found; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | /* All this hair to move the space to the front of cmdtype */ | |
1042 | ||
1043 | static void | |
fba45db2 | 1044 | undef_cmd_error (char *cmdtype, char *q) |
c906108c SS |
1045 | { |
1046 | error ("Undefined %scommand: \"%s\". Try \"help%s%.*s\".", | |
c5aa993b JM |
1047 | cmdtype, |
1048 | q, | |
1049 | *cmdtype ? " " : "", | |
823ca731 | 1050 | (int) strlen (cmdtype) - 1, |
c5aa993b | 1051 | cmdtype); |
c906108c SS |
1052 | } |
1053 | ||
1054 | /* Look up the contents of *LINE as a command in the command list LIST. | |
1055 | LIST is a chain of struct cmd_list_element's. | |
1056 | If it is found, return the struct cmd_list_element for that command | |
1057 | and update *LINE to point after the command name, at the first argument. | |
1058 | If not found, call error if ALLOW_UNKNOWN is zero | |
1059 | otherwise (or if error returns) return zero. | |
1060 | Call error if specified command is ambiguous, | |
1061 | unless ALLOW_UNKNOWN is negative. | |
1062 | CMDTYPE precedes the word "command" in the error message. | |
1063 | ||
1064 | If INGNORE_HELP_CLASSES is nonzero, ignore any command list | |
1065 | elements which are actually help classes rather than commands (i.e. | |
1066 | the function field of the struct cmd_list_element is 0). */ | |
1067 | ||
1068 | struct cmd_list_element * | |
fba45db2 KB |
1069 | lookup_cmd (char **line, struct cmd_list_element *list, char *cmdtype, |
1070 | int allow_unknown, int ignore_help_classes) | |
c906108c SS |
1071 | { |
1072 | struct cmd_list_element *last_list = 0; | |
1073 | struct cmd_list_element *c = | |
c5aa993b | 1074 | lookup_cmd_1 (line, list, &last_list, ignore_help_classes); |
c64601c7 FN |
1075 | |
1076 | /* Note: Do not remove trailing whitespace here because this | |
1077 | would be wrong for complete_command. Jim Kingdon */ | |
c5aa993b | 1078 | |
c906108c SS |
1079 | if (!c) |
1080 | { | |
1081 | if (!allow_unknown) | |
1082 | { | |
1083 | if (!*line) | |
1084 | error ("Lack of needed %scommand", cmdtype); | |
1085 | else | |
1086 | { | |
1087 | char *p = *line, *q; | |
1088 | ||
c5aa993b | 1089 | while (isalnum (*p) || *p == '-') |
c906108c SS |
1090 | p++; |
1091 | ||
1092 | q = (char *) alloca (p - *line + 1); | |
1093 | strncpy (q, *line, p - *line); | |
1094 | q[p - *line] = '\0'; | |
1095 | undef_cmd_error (cmdtype, q); | |
1096 | } | |
1097 | } | |
1098 | else | |
1099 | return 0; | |
1100 | } | |
1101 | else if (c == (struct cmd_list_element *) -1) | |
1102 | { | |
1103 | /* Ambigous. Local values should be off prefixlist or called | |
c5aa993b | 1104 | values. */ |
c906108c SS |
1105 | int local_allow_unknown = (last_list ? last_list->allow_unknown : |
1106 | allow_unknown); | |
1107 | char *local_cmdtype = last_list ? last_list->prefixname : cmdtype; | |
1108 | struct cmd_list_element *local_list = | |
c5aa993b JM |
1109 | (last_list ? *(last_list->prefixlist) : list); |
1110 | ||
c906108c SS |
1111 | if (local_allow_unknown < 0) |
1112 | { | |
1113 | if (last_list) | |
1114 | return last_list; /* Found something. */ | |
1115 | else | |
1116 | return 0; /* Found nothing. */ | |
1117 | } | |
1118 | else | |
1119 | { | |
1120 | /* Report as error. */ | |
1121 | int amb_len; | |
1122 | char ambbuf[100]; | |
1123 | ||
1124 | for (amb_len = 0; | |
1125 | ((*line)[amb_len] && (*line)[amb_len] != ' ' | |
1126 | && (*line)[amb_len] != '\t'); | |
1127 | amb_len++) | |
1128 | ; | |
c5aa993b | 1129 | |
c906108c SS |
1130 | ambbuf[0] = 0; |
1131 | for (c = local_list; c; c = c->next) | |
1132 | if (!strncmp (*line, c->name, amb_len)) | |
1133 | { | |
c5aa993b | 1134 | if (strlen (ambbuf) + strlen (c->name) + 6 < (int) sizeof ambbuf) |
c906108c SS |
1135 | { |
1136 | if (strlen (ambbuf)) | |
1137 | strcat (ambbuf, ", "); | |
1138 | strcat (ambbuf, c->name); | |
1139 | } | |
1140 | else | |
1141 | { | |
1142 | strcat (ambbuf, ".."); | |
1143 | break; | |
1144 | } | |
1145 | } | |
1146 | error ("Ambiguous %scommand \"%s\": %s.", local_cmdtype, | |
1147 | *line, ambbuf); | |
1148 | return 0; /* lint */ | |
1149 | } | |
1150 | } | |
1151 | else | |
1152 | { | |
1153 | /* We've got something. It may still not be what the caller | |
1154 | wants (if this command *needs* a subcommand). */ | |
1155 | while (**line == ' ' || **line == '\t') | |
1156 | (*line)++; | |
1157 | ||
1158 | if (c->prefixlist && **line && !c->allow_unknown) | |
1159 | undef_cmd_error (c->prefixname, *line); | |
1160 | ||
1161 | /* Seems to be what he wants. Return it. */ | |
1162 | return c; | |
1163 | } | |
1164 | return 0; | |
1165 | } | |
c5aa993b | 1166 | |
56382845 FN |
1167 | /* We are here presumably because an alias or command in *TEXT is |
1168 | deprecated and a warning message should be generated. This function | |
1169 | decodes *TEXT and potentially generates a warning message as outlined | |
1170 | below. | |
1171 | ||
1172 | Example for 'set endian big' which has a fictitious alias 'seb'. | |
1173 | ||
1174 | If alias wasn't used in *TEXT, and the command is deprecated: | |
1175 | "warning: 'set endian big' is deprecated." | |
1176 | ||
1177 | If alias was used, and only the alias is deprecated: | |
1178 | "warning: 'seb' an alias for the command 'set endian big' is deprecated." | |
1179 | ||
1180 | If alias was used and command is deprecated (regardless of whether the | |
1181 | alias itself is deprecated: | |
1182 | ||
1183 | "warning: 'set endian big' (seb) is deprecated." | |
1184 | ||
1185 | After the message has been sent, clear the appropriate flags in the | |
1186 | command and/or the alias so the user is no longer bothered. | |
1187 | ||
1188 | */ | |
1189 | void | |
1190 | deprecated_cmd_warning (char **text) | |
1191 | { | |
1192 | struct cmd_list_element *alias = NULL; | |
1193 | struct cmd_list_element *prefix_cmd = NULL; | |
1194 | struct cmd_list_element *cmd = NULL; | |
1195 | struct cmd_list_element *c; | |
1196 | char *type; | |
1197 | ||
1198 | if (!lookup_cmd_composition (*text, &alias, &prefix_cmd, &cmd)) | |
1199 | /* return if text doesn't evaluate to a command */ | |
1200 | return; | |
1201 | ||
1202 | if (!((alias ? (alias->flags & DEPRECATED_WARN_USER) : 0) | |
1203 | || (cmd->flags & DEPRECATED_WARN_USER) ) ) | |
1204 | /* return if nothing is deprecated */ | |
1205 | return; | |
1206 | ||
1207 | printf_filtered ("Warning:"); | |
1208 | ||
1209 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1210 | printf_filtered (" '%s', an alias for the", alias->name); | |
1211 | ||
1212 | printf_filtered (" command '"); | |
1213 | ||
1214 | if (prefix_cmd) | |
1215 | printf_filtered ("%s", prefix_cmd->prefixname); | |
1216 | ||
1217 | printf_filtered ("%s", cmd->name); | |
1218 | ||
1219 | if (alias && (cmd->flags & CMD_DEPRECATED)) | |
1220 | printf_filtered ("' (%s) is deprecated.\n", alias->name); | |
1221 | else | |
1222 | printf_filtered ("' is deprecated.\n"); | |
1223 | ||
1224 | ||
1225 | /* if it is only the alias that is deprecated, we want to indicate the | |
1226 | new alias, otherwise we'll indicate the new command */ | |
1227 | ||
1228 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1229 | { | |
1230 | if (alias->replacement) | |
1231 | printf_filtered ("Use '%s'.\n\n", alias->replacement); | |
1232 | else | |
1233 | printf_filtered ("No alternative known.\n\n"); | |
1234 | } | |
1235 | else | |
1236 | { | |
1237 | if (cmd->replacement) | |
1238 | printf_filtered ("Use '%s'.\n\n", cmd->replacement); | |
1239 | else | |
1240 | printf_filtered ("No alternative known.\n\n"); | |
1241 | } | |
1242 | ||
1243 | /* We've warned you, now we'll keep quiet */ | |
1244 | if (alias) | |
1245 | alias->flags &= ~DEPRECATED_WARN_USER; | |
1246 | ||
1247 | cmd->flags &= ~DEPRECATED_WARN_USER; | |
1248 | } | |
1249 | ||
1250 | ||
1251 | ||
1252 | /* Look up the contents of LINE as a command in the command list 'cmdlist'. | |
1253 | Return 1 on success, 0 on failure. | |
1254 | ||
1255 | If LINE refers to an alias, *alias will point to that alias. | |
1256 | ||
1257 | If LINE is a postfix command (i.e. one that is preceeded by a prefix | |
1258 | command) set *prefix_cmd. | |
1259 | ||
1260 | Set *cmd to point to the command LINE indicates. | |
1261 | ||
1262 | If any of *alias, *prefix_cmd, or *cmd cannot be determined or do not | |
1263 | exist, they are NULL when we return. | |
1264 | ||
1265 | */ | |
1266 | int | |
1267 | lookup_cmd_composition (char *text, | |
1268 | struct cmd_list_element **alias, | |
1269 | struct cmd_list_element **prefix_cmd, | |
1270 | struct cmd_list_element **cmd) | |
1271 | { | |
1272 | char *p, *command; | |
1273 | int len, tmp, nfound; | |
1274 | struct cmd_list_element *cur_list; | |
1275 | struct cmd_list_element *prev_cmd; | |
1276 | *alias = NULL; | |
1277 | *prefix_cmd = NULL; | |
1278 | *cmd = NULL; | |
1279 | ||
1280 | cur_list = cmdlist; | |
1281 | ||
1282 | while (1) | |
1283 | { | |
1284 | /* Go through as many command lists as we need to | |
1285 | to find the command TEXT refers to. */ | |
1286 | ||
1287 | prev_cmd = *cmd; | |
1288 | ||
1289 | while (*text == ' ' || *text == '\t') | |
1290 | (text)++; | |
1291 | ||
1292 | /* Treating underscores as part of command words is important | |
1293 | so that "set args_foo()" doesn't get interpreted as | |
1294 | "set args _foo()". */ | |
1295 | for (p = text; | |
1296 | *p && (isalnum (*p) || *p == '-' || *p == '_' || | |
1297 | (tui_version && | |
1298 | (*p == '+' || *p == '<' || *p == '>' || *p == '$')) || | |
1299 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))); | |
1300 | p++) | |
1301 | ; | |
1302 | ||
1303 | /* If nothing but whitespace, return. */ | |
1304 | if (p == text) | |
1305 | return 0; | |
1306 | ||
1307 | len = p - text; | |
1308 | ||
1309 | /* text and p now bracket the first command word to lookup (and | |
1310 | it's length is len). We copy this into a local temporary */ | |
1311 | ||
1312 | command = (char *) alloca (len + 1); | |
1313 | for (tmp = 0; tmp < len; tmp++) | |
1314 | { | |
1315 | char x = text[tmp]; | |
1316 | command[tmp] = x; | |
1317 | } | |
1318 | command[len] = '\0'; | |
1319 | ||
1320 | /* Look it up. */ | |
1321 | *cmd = 0; | |
1322 | nfound = 0; | |
1323 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1324 | ||
1325 | /* We didn't find the command in the entered case, so lower case it | |
1326 | and search again. | |
1327 | */ | |
1328 | if (!*cmd || nfound == 0) | |
1329 | { | |
1330 | for (tmp = 0; tmp < len; tmp++) | |
1331 | { | |
1332 | char x = command[tmp]; | |
1333 | command[tmp] = isupper (x) ? tolower (x) : x; | |
1334 | } | |
1335 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1336 | } | |
1337 | ||
1338 | if (*cmd == (struct cmd_list_element *) -1) | |
1339 | { | |
1340 | return 0; /* ambiguous */ | |
1341 | } | |
1342 | ||
1343 | if (*cmd == NULL) | |
1344 | return 0; /* nothing found */ | |
1345 | else | |
1346 | { | |
1347 | if ((*cmd)->cmd_pointer) | |
1348 | { | |
1349 | /* cmd was actually an alias, we note that an alias was used | |
1350 | (by assigning *alais) and we set *cmd. | |
1351 | */ | |
1352 | *alias = *cmd; | |
1353 | *cmd = (*cmd)->cmd_pointer; | |
1354 | } | |
1355 | *prefix_cmd = prev_cmd; | |
1356 | } | |
1357 | if ((*cmd)->prefixlist) | |
1358 | cur_list = *(*cmd)->prefixlist; | |
1359 | else | |
1360 | return 1; | |
1361 | ||
1362 | text = p; | |
1363 | } | |
1364 | } | |
1365 | ||
c906108c SS |
1366 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ |
1367 | ||
1368 | /* Return a vector of char pointers which point to the different | |
1369 | possible completions in LIST of TEXT. | |
1370 | ||
1371 | WORD points in the same buffer as TEXT, and completions should be | |
1372 | returned relative to this position. For example, suppose TEXT is "foo" | |
1373 | and we want to complete to "foobar". If WORD is "oo", return | |
1374 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1375 | ||
1376 | char ** | |
fba45db2 | 1377 | complete_on_cmdlist (struct cmd_list_element *list, char *text, char *word) |
c906108c SS |
1378 | { |
1379 | struct cmd_list_element *ptr; | |
1380 | char **matchlist; | |
1381 | int sizeof_matchlist; | |
1382 | int matches; | |
1383 | int textlen = strlen (text); | |
1384 | ||
1385 | sizeof_matchlist = 10; | |
1386 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1387 | matches = 0; | |
1388 | ||
1389 | for (ptr = list; ptr; ptr = ptr->next) | |
1390 | if (!strncmp (ptr->name, text, textlen) | |
1391 | && !ptr->abbrev_flag | |
9f60d481 | 1392 | && (ptr->func |
c906108c SS |
1393 | || ptr->prefixlist)) |
1394 | { | |
1395 | if (matches == sizeof_matchlist) | |
1396 | { | |
1397 | sizeof_matchlist *= 2; | |
c5aa993b | 1398 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1399 | (sizeof_matchlist |
1400 | * sizeof (char *))); | |
1401 | } | |
1402 | ||
c5aa993b | 1403 | matchlist[matches] = (char *) |
c906108c SS |
1404 | xmalloc (strlen (word) + strlen (ptr->name) + 1); |
1405 | if (word == text) | |
1406 | strcpy (matchlist[matches], ptr->name); | |
1407 | else if (word > text) | |
1408 | { | |
1409 | /* Return some portion of ptr->name. */ | |
1410 | strcpy (matchlist[matches], ptr->name + (word - text)); | |
1411 | } | |
1412 | else | |
1413 | { | |
1414 | /* Return some of text plus ptr->name. */ | |
1415 | strncpy (matchlist[matches], word, text - word); | |
1416 | matchlist[matches][text - word] = '\0'; | |
1417 | strcat (matchlist[matches], ptr->name); | |
1418 | } | |
1419 | ++matches; | |
1420 | } | |
1421 | ||
1422 | if (matches == 0) | |
1423 | { | |
b8c9b27d | 1424 | xfree (matchlist); |
c906108c SS |
1425 | matchlist = 0; |
1426 | } | |
1427 | else | |
1428 | { | |
c5aa993b JM |
1429 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1430 | * sizeof (char *))); | |
c906108c SS |
1431 | matchlist[matches] = (char *) 0; |
1432 | } | |
1433 | ||
1434 | return matchlist; | |
1435 | } | |
1436 | ||
1437 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
1438 | ||
1439 | /* Return a vector of char pointers which point to the different | |
1440 | possible completions in CMD of TEXT. | |
1441 | ||
1442 | WORD points in the same buffer as TEXT, and completions should be | |
1443 | returned relative to this position. For example, suppose TEXT is "foo" | |
1444 | and we want to complete to "foobar". If WORD is "oo", return | |
1445 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1446 | ||
1447 | char ** | |
53904c9e AC |
1448 | complete_on_enum (const char *enumlist[], |
1449 | char *text, | |
1450 | char *word) | |
c906108c SS |
1451 | { |
1452 | char **matchlist; | |
1453 | int sizeof_matchlist; | |
1454 | int matches; | |
1455 | int textlen = strlen (text); | |
1456 | int i; | |
53904c9e | 1457 | const char *name; |
c906108c SS |
1458 | |
1459 | sizeof_matchlist = 10; | |
1460 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1461 | matches = 0; | |
1462 | ||
1463 | for (i = 0; (name = enumlist[i]) != NULL; i++) | |
1464 | if (strncmp (name, text, textlen) == 0) | |
1465 | { | |
1466 | if (matches == sizeof_matchlist) | |
1467 | { | |
1468 | sizeof_matchlist *= 2; | |
c5aa993b | 1469 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1470 | (sizeof_matchlist |
1471 | * sizeof (char *))); | |
1472 | } | |
1473 | ||
c5aa993b | 1474 | matchlist[matches] = (char *) |
c906108c SS |
1475 | xmalloc (strlen (word) + strlen (name) + 1); |
1476 | if (word == text) | |
1477 | strcpy (matchlist[matches], name); | |
1478 | else if (word > text) | |
1479 | { | |
1480 | /* Return some portion of name. */ | |
1481 | strcpy (matchlist[matches], name + (word - text)); | |
1482 | } | |
1483 | else | |
1484 | { | |
1485 | /* Return some of text plus name. */ | |
1486 | strncpy (matchlist[matches], word, text - word); | |
1487 | matchlist[matches][text - word] = '\0'; | |
1488 | strcat (matchlist[matches], name); | |
1489 | } | |
1490 | ++matches; | |
1491 | } | |
1492 | ||
1493 | if (matches == 0) | |
1494 | { | |
b8c9b27d | 1495 | xfree (matchlist); |
c906108c SS |
1496 | matchlist = 0; |
1497 | } | |
1498 | else | |
1499 | { | |
c5aa993b JM |
1500 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1501 | * sizeof (char *))); | |
c906108c SS |
1502 | matchlist[matches] = (char *) 0; |
1503 | } | |
1504 | ||
1505 | return matchlist; | |
1506 | } | |
1507 | ||
f436dd25 MH |
1508 | |
1509 | /* check function pointer */ | |
1510 | int | |
1511 | cmd_func_p (struct cmd_list_element *cmd) | |
1512 | { | |
1513 | return (cmd->func != NULL); | |
1514 | } | |
1515 | ||
1516 | ||
1517 | /* call the command function */ | |
1518 | void | |
1519 | cmd_func (struct cmd_list_element *cmd, char *args, int from_tty) | |
1520 | { | |
1521 | if (cmd_func_p (cmd)) | |
1522 | (*cmd->func) (cmd, args, from_tty); | |
1523 | else | |
1524 | error ("Invalid command"); | |
1525 | } | |
1526 | ||
1527 |