Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Handle lists of commands, their decoding and documentation, for GDB. |
8926118c | 2 | |
9b254dd1 DJ |
3 | Copyright (c) 1986, 1989, 1990, 1991, 1998, 2000, 2001, 2002, 2004, 2007, |
4 | 2008 Free 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 | |
a9762ec7 | 8 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 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 | 16 | You should have received a copy of the GNU General Public License |
a9762ec7 | 17 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
18 | |
19 | #include "defs.h" | |
c906108c | 20 | #include "symtab.h" |
c906108c | 21 | #include <ctype.h> |
f77b92bf | 22 | #include "gdb_regex.h" |
5f8a3188 | 23 | #include "gdb_string.h" |
f397e303 | 24 | #include "completer.h" |
8b93c638 | 25 | #include "ui-out.h" |
c906108c | 26 | |
d318976c FN |
27 | #include "cli/cli-cmds.h" |
28 | #include "cli/cli-decode.h" | |
53a5351d | 29 | |
6a83354a AC |
30 | #ifdef TUI |
31 | #include "tui/tui.h" /* For tui_active et.al. */ | |
32 | #endif | |
33 | ||
b2875cc0 AC |
34 | #include "gdb_assert.h" |
35 | ||
c906108c SS |
36 | /* Prototypes for local functions */ |
37 | ||
a14ed312 | 38 | static void undef_cmd_error (char *, char *); |
c906108c | 39 | |
b05dcbb7 TT |
40 | static struct cmd_list_element *delete_cmd (char *name, |
41 | struct cmd_list_element **list); | |
42 | ||
a14ed312 KB |
43 | static struct cmd_list_element *find_cmd (char *command, |
44 | int len, | |
45 | struct cmd_list_element *clist, | |
46 | int ignore_help_classes, | |
47 | int *nfound); | |
6837a0a2 | 48 | |
c85871a3 | 49 | static void help_all (struct ui_file *stream); |
6e381ba0 VP |
50 | |
51 | static void | |
52 | print_help_for_command (struct cmd_list_element *c, char *prefix, int recurse, | |
53 | struct ui_file *stream); | |
54 | ||
d318976c | 55 | \f |
9f60d481 AC |
56 | /* Set the callback function for the specified command. For each both |
57 | the commands callback and func() are set. The latter set to a | |
58 | bounce function (unless cfunc / sfunc is NULL that is). */ | |
59 | ||
60 | static void | |
61 | do_cfunc (struct cmd_list_element *c, char *args, int from_tty) | |
62 | { | |
63 | c->function.cfunc (args, from_tty); /* Ok. */ | |
64 | } | |
65 | ||
66 | void | |
9773a94b | 67 | set_cmd_cfunc (struct cmd_list_element *cmd, cmd_cfunc_ftype *cfunc) |
9f60d481 AC |
68 | { |
69 | if (cfunc == NULL) | |
70 | cmd->func = NULL; | |
71 | else | |
72 | cmd->func = do_cfunc; | |
73 | cmd->function.cfunc = cfunc; /* Ok. */ | |
74 | } | |
75 | ||
76 | static void | |
77 | do_sfunc (struct cmd_list_element *c, char *args, int from_tty) | |
78 | { | |
79 | c->function.sfunc (args, from_tty, c); /* Ok. */ | |
80 | } | |
81 | ||
82 | void | |
9773a94b | 83 | set_cmd_sfunc (struct cmd_list_element *cmd, cmd_sfunc_ftype *sfunc) |
9f60d481 AC |
84 | { |
85 | if (sfunc == NULL) | |
86 | cmd->func = NULL; | |
87 | else | |
88 | cmd->func = do_sfunc; | |
89 | cmd->function.sfunc = sfunc; /* Ok. */ | |
90 | } | |
91 | ||
bbaca940 AC |
92 | int |
93 | cmd_cfunc_eq (struct cmd_list_element *cmd, | |
94 | void (*cfunc) (char *args, int from_tty)) | |
95 | { | |
96 | return cmd->func == do_cfunc && cmd->function.cfunc == cfunc; | |
97 | } | |
98 | ||
7d0766f3 AC |
99 | void |
100 | set_cmd_context (struct cmd_list_element *cmd, void *context) | |
101 | { | |
102 | cmd->context = context; | |
103 | } | |
104 | ||
105 | void * | |
106 | get_cmd_context (struct cmd_list_element *cmd) | |
107 | { | |
108 | return cmd->context; | |
109 | } | |
110 | ||
4f8d22e3 PA |
111 | void |
112 | set_cmd_no_selected_thread_ok (struct cmd_list_element *cmd) | |
113 | { | |
114 | cmd->flags |= CMD_NO_SELECTED_THREAD_OK; | |
115 | } | |
116 | ||
117 | int | |
118 | get_cmd_no_selected_thread_ok (struct cmd_list_element *cmd) | |
119 | { | |
120 | return cmd->flags & CMD_NO_SELECTED_THREAD_OK; | |
121 | } | |
122 | ||
1868c04e AC |
123 | enum cmd_types |
124 | cmd_type (struct cmd_list_element *cmd) | |
125 | { | |
126 | return cmd->type; | |
127 | } | |
128 | ||
5ba2abeb AC |
129 | void |
130 | set_cmd_completer (struct cmd_list_element *cmd, | |
131 | char **(*completer) (char *text, char *word)) | |
132 | { | |
133 | cmd->completer = completer; /* Ok. */ | |
134 | } | |
135 | ||
9f60d481 | 136 | |
c906108c SS |
137 | /* Add element named NAME. |
138 | CLASS is the top level category into which commands are broken down | |
139 | for "help" purposes. | |
140 | FUN should be the function to execute the command; | |
141 | it will get a character string as argument, with leading | |
142 | and trailing blanks already eliminated. | |
143 | ||
144 | DOC is a documentation string for the command. | |
145 | Its first line should be a complete sentence. | |
146 | It should start with ? for a command that is an abbreviation | |
147 | or with * for a command that most users don't need to know about. | |
148 | ||
149 | Add this command to command list *LIST. | |
150 | ||
151 | Returns a pointer to the added command (not necessarily the head | |
152 | of *LIST). */ | |
153 | ||
154 | struct cmd_list_element * | |
af1c1752 KB |
155 | add_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
156 | char *doc, struct cmd_list_element **list) | |
c906108c | 157 | { |
d5b5ac79 | 158 | struct cmd_list_element *c |
c5aa993b | 159 | = (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); |
b05dcbb7 | 160 | struct cmd_list_element *p, *iter; |
c906108c | 161 | |
b05dcbb7 TT |
162 | /* Turn each alias of the old command into an alias of the new |
163 | command. */ | |
164 | c->aliases = delete_cmd (name, list); | |
165 | for (iter = c->aliases; iter; iter = iter->alias_chain) | |
166 | iter->cmd_pointer = c; | |
c906108c | 167 | |
494b7ec9 | 168 | if (*list == NULL || strcmp ((*list)->name, name) >= 0) |
c906108c SS |
169 | { |
170 | c->next = *list; | |
171 | *list = c; | |
172 | } | |
173 | else | |
174 | { | |
175 | p = *list; | |
494b7ec9 | 176 | while (p->next && strcmp (p->next->name, name) <= 0) |
c5aa993b JM |
177 | { |
178 | p = p->next; | |
179 | } | |
c906108c SS |
180 | c->next = p->next; |
181 | p->next = c; | |
182 | } | |
183 | ||
184 | c->name = name; | |
185 | c->class = class; | |
9f60d481 | 186 | set_cmd_cfunc (c, fun); |
7d0766f3 | 187 | set_cmd_context (c, NULL); |
c906108c | 188 | c->doc = doc; |
56382845 FN |
189 | c->flags = 0; |
190 | c->replacement = NULL; | |
47724592 | 191 | c->pre_show_hook = NULL; |
73bc900d FN |
192 | c->hook_pre = NULL; |
193 | c->hook_post = NULL; | |
194 | c->hook_in = 0; | |
c906108c SS |
195 | c->prefixlist = NULL; |
196 | c->prefixname = NULL; | |
197 | c->allow_unknown = 0; | |
198 | c->abbrev_flag = 0; | |
5ba2abeb | 199 | set_cmd_completer (c, make_symbol_completion_list); |
c906108c SS |
200 | c->type = not_set_cmd; |
201 | c->var = NULL; | |
202 | c->var_type = var_boolean; | |
203 | c->enums = NULL; | |
204 | c->user_commands = NULL; | |
73bc900d FN |
205 | c->hookee_pre = NULL; |
206 | c->hookee_post = NULL; | |
c906108c | 207 | c->cmd_pointer = NULL; |
b05dcbb7 | 208 | c->alias_chain = NULL; |
c906108c SS |
209 | |
210 | return c; | |
211 | } | |
212 | ||
56382845 FN |
213 | /* Deprecates a command CMD. |
214 | REPLACEMENT is the name of the command which should be used in place | |
215 | of this command, or NULL if no such command exists. | |
216 | ||
217 | This function does not check to see if command REPLACEMENT exists | |
218 | since gdb may not have gotten around to adding REPLACEMENT when this | |
219 | function is called. | |
220 | ||
221 | Returns a pointer to the deprecated command. */ | |
222 | ||
223 | struct cmd_list_element * | |
fba45db2 | 224 | deprecate_cmd (struct cmd_list_element *cmd, char *replacement) |
56382845 FN |
225 | { |
226 | cmd->flags |= (CMD_DEPRECATED | DEPRECATED_WARN_USER); | |
227 | ||
228 | if (replacement != NULL) | |
229 | cmd->replacement = replacement; | |
230 | else | |
231 | cmd->replacement = NULL; | |
232 | ||
233 | return cmd; | |
234 | } | |
235 | ||
c906108c | 236 | struct cmd_list_element * |
fba45db2 KB |
237 | add_alias_cmd (char *name, char *oldname, enum command_class class, |
238 | int abbrev_flag, struct cmd_list_element **list) | |
c906108c SS |
239 | { |
240 | /* Must do this since lookup_cmd tries to side-effect its first arg */ | |
241 | char *copied_name; | |
d5b5ac79 AC |
242 | struct cmd_list_element *old; |
243 | struct cmd_list_element *c; | |
c906108c SS |
244 | copied_name = (char *) alloca (strlen (oldname) + 1); |
245 | strcpy (copied_name, oldname); | |
c5aa993b | 246 | old = lookup_cmd (&copied_name, *list, "", 1, 1); |
c906108c SS |
247 | |
248 | if (old == 0) | |
249 | { | |
b05dcbb7 TT |
250 | struct cmd_list_element *aliases = delete_cmd (name, list); |
251 | /* If this happens, it means a programmer error somewhere. */ | |
252 | gdb_assert (!aliases); | |
c906108c SS |
253 | return 0; |
254 | } | |
255 | ||
9f60d481 AC |
256 | c = add_cmd (name, class, NULL, old->doc, list); |
257 | /* NOTE: Both FUNC and all the FUNCTIONs need to be copied. */ | |
258 | c->func = old->func; | |
259 | c->function = old->function; | |
c906108c SS |
260 | c->prefixlist = old->prefixlist; |
261 | c->prefixname = old->prefixname; | |
262 | c->allow_unknown = old->allow_unknown; | |
263 | c->abbrev_flag = abbrev_flag; | |
264 | c->cmd_pointer = old; | |
b05dcbb7 TT |
265 | c->alias_chain = old->aliases; |
266 | old->aliases = c; | |
c906108c SS |
267 | return c; |
268 | } | |
269 | ||
270 | /* Like add_cmd but adds an element for a command prefix: | |
271 | a name that should be followed by a subcommand to be looked up | |
272 | in another command list. PREFIXLIST should be the address | |
273 | of the variable containing that list. */ | |
274 | ||
275 | struct cmd_list_element * | |
af1c1752 KB |
276 | add_prefix_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
277 | char *doc, struct cmd_list_element **prefixlist, | |
278 | char *prefixname, int allow_unknown, | |
279 | struct cmd_list_element **list) | |
c906108c | 280 | { |
d5b5ac79 | 281 | struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); |
c906108c SS |
282 | c->prefixlist = prefixlist; |
283 | c->prefixname = prefixname; | |
284 | c->allow_unknown = allow_unknown; | |
285 | return c; | |
286 | } | |
287 | ||
288 | /* Like add_prefix_cmd but sets the abbrev_flag on the new command. */ | |
c5aa993b | 289 | |
c906108c | 290 | struct cmd_list_element * |
af1c1752 KB |
291 | add_abbrev_prefix_cmd (char *name, enum command_class class, |
292 | void (*fun) (char *, int), char *doc, | |
293 | struct cmd_list_element **prefixlist, char *prefixname, | |
294 | int allow_unknown, struct cmd_list_element **list) | |
c906108c | 295 | { |
d5b5ac79 | 296 | struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); |
c906108c SS |
297 | c->prefixlist = prefixlist; |
298 | c->prefixname = prefixname; | |
299 | c->allow_unknown = allow_unknown; | |
300 | c->abbrev_flag = 1; | |
301 | return c; | |
302 | } | |
303 | ||
304 | /* This is an empty "cfunc". */ | |
305 | void | |
fba45db2 | 306 | not_just_help_class_command (char *args, int from_tty) |
c906108c SS |
307 | { |
308 | } | |
309 | ||
310 | /* This is an empty "sfunc". */ | |
a14ed312 | 311 | static void empty_sfunc (char *, int, struct cmd_list_element *); |
c906108c SS |
312 | |
313 | static void | |
fba45db2 | 314 | empty_sfunc (char *args, int from_tty, struct cmd_list_element *c) |
c906108c SS |
315 | { |
316 | } | |
317 | ||
b2875cc0 | 318 | /* Add element named NAME to command list LIST (the list for set/show |
c906108c | 319 | or some sublist thereof). |
b2875cc0 | 320 | TYPE is set_cmd or show_cmd. |
c906108c SS |
321 | CLASS is as in add_cmd. |
322 | VAR_TYPE is the kind of thing we are setting. | |
323 | VAR is address of the variable being controlled by this command. | |
324 | DOC is the documentation string. */ | |
325 | ||
b2875cc0 AC |
326 | static struct cmd_list_element * |
327 | add_set_or_show_cmd (char *name, | |
328 | enum cmd_types type, | |
329 | enum command_class class, | |
330 | var_types var_type, | |
331 | void *var, | |
332 | char *doc, | |
333 | struct cmd_list_element **list) | |
c906108c | 334 | { |
e00d1dc8 | 335 | struct cmd_list_element *c = add_cmd (name, class, NULL, doc, list); |
b2875cc0 AC |
336 | gdb_assert (type == set_cmd || type == show_cmd); |
337 | c->type = type; | |
c906108c SS |
338 | c->var_type = var_type; |
339 | c->var = var; | |
e00d1dc8 | 340 | /* This needs to be something besides NULL so that this isn't |
c906108c | 341 | treated as a help class. */ |
9f60d481 | 342 | set_cmd_sfunc (c, empty_sfunc); |
c906108c SS |
343 | return c; |
344 | } | |
345 | ||
e707bbc2 AC |
346 | /* Add element named NAME to both the command SET_LIST and SHOW_LIST. |
347 | CLASS is as in add_cmd. VAR_TYPE is the kind of thing we are | |
348 | setting. VAR is address of the variable being controlled by this | |
349 | command. SET_FUNC and SHOW_FUNC are the callback functions (if | |
3b64bf98 AC |
350 | non-NULL). SET_DOC, SHOW_DOC and HELP_DOC are the documentation |
351 | strings. PRINT the format string to print the value. SET_RESULT | |
352 | and SHOW_RESULT, if not NULL, are set to the resulting command | |
353 | structures. */ | |
e707bbc2 | 354 | |
b3f42336 | 355 | static void |
9f064c95 TT |
356 | add_setshow_cmd_full (char *name, |
357 | enum command_class class, | |
358 | var_types var_type, void *var, | |
3b64bf98 | 359 | const char *set_doc, const char *show_doc, |
335cca0d | 360 | const char *help_doc, |
3b64bf98 | 361 | cmd_sfunc_ftype *set_func, |
08546159 | 362 | show_value_ftype *show_func, |
9f064c95 TT |
363 | struct cmd_list_element **set_list, |
364 | struct cmd_list_element **show_list, | |
365 | struct cmd_list_element **set_result, | |
366 | struct cmd_list_element **show_result) | |
e707bbc2 AC |
367 | { |
368 | struct cmd_list_element *set; | |
369 | struct cmd_list_element *show; | |
be7d7357 AC |
370 | char *full_set_doc; |
371 | char *full_show_doc; | |
372 | ||
373 | if (help_doc != NULL) | |
374 | { | |
375 | full_set_doc = xstrprintf ("%s\n%s", set_doc, help_doc); | |
376 | full_show_doc = xstrprintf ("%s\n%s", show_doc, help_doc); | |
377 | } | |
378 | else | |
379 | { | |
380 | full_set_doc = xstrdup (set_doc); | |
381 | full_show_doc = xstrdup (show_doc); | |
382 | } | |
e707bbc2 | 383 | set = add_set_or_show_cmd (name, set_cmd, class, var_type, var, |
3b64bf98 | 384 | full_set_doc, set_list); |
e707bbc2 AC |
385 | if (set_func != NULL) |
386 | set_cmd_sfunc (set, set_func); | |
387 | show = add_set_or_show_cmd (name, show_cmd, class, var_type, var, | |
3b64bf98 | 388 | full_show_doc, show_list); |
08546159 | 389 | show->show_value_func = show_func; |
9f064c95 TT |
390 | |
391 | if (set_result != NULL) | |
392 | *set_result = set; | |
393 | if (show_result != NULL) | |
394 | *show_result = show; | |
395 | } | |
396 | ||
b2875cc0 | 397 | struct cmd_list_element * |
b66df561 AC |
398 | deprecated_add_set_cmd (char *name, |
399 | enum command_class class, | |
400 | var_types var_type, | |
401 | void *var, | |
402 | char *doc, | |
403 | struct cmd_list_element **list) | |
b2875cc0 AC |
404 | { |
405 | return add_set_or_show_cmd (name, set_cmd, class, var_type, var, doc, list); | |
406 | } | |
407 | ||
1b295c3d AC |
408 | /* Add element named NAME to command list LIST (the list for set or |
409 | some sublist thereof). CLASS is as in add_cmd. ENUMLIST is a list | |
410 | of strings which may follow NAME. VAR is address of the variable | |
411 | which will contain the matching string (from ENUMLIST). */ | |
412 | ||
413 | void | |
414 | add_setshow_enum_cmd (char *name, | |
415 | enum command_class class, | |
416 | const char *enumlist[], | |
417 | const char **var, | |
418 | const char *set_doc, | |
419 | const char *show_doc, | |
420 | const char *help_doc, | |
1b295c3d | 421 | cmd_sfunc_ftype *set_func, |
08546159 | 422 | show_value_ftype *show_func, |
1b295c3d | 423 | struct cmd_list_element **set_list, |
7376b4c2 | 424 | struct cmd_list_element **show_list) |
1b295c3d AC |
425 | { |
426 | struct cmd_list_element *c; | |
427 | add_setshow_cmd_full (name, class, var_enum, var, | |
335cca0d | 428 | set_doc, show_doc, help_doc, |
1b295c3d AC |
429 | set_func, show_func, |
430 | set_list, show_list, | |
7376b4c2 | 431 | &c, NULL); |
1b295c3d AC |
432 | c->enums = enumlist; |
433 | } | |
434 | ||
e9e68a56 AC |
435 | /* Add an auto-boolean command named NAME to both the set and show |
436 | command list lists. CLASS is as in add_cmd. VAR is address of the | |
437 | variable which will contain the value. DOC is the documentation | |
438 | string. FUNC is the corresponding callback. */ | |
439 | void | |
440 | add_setshow_auto_boolean_cmd (char *name, | |
441 | enum command_class class, | |
442 | enum auto_boolean *var, | |
3b64bf98 | 443 | const char *set_doc, const char *show_doc, |
335cca0d | 444 | const char *help_doc, |
e9e68a56 | 445 | cmd_sfunc_ftype *set_func, |
08546159 | 446 | show_value_ftype *show_func, |
e9e68a56 AC |
447 | struct cmd_list_element **set_list, |
448 | struct cmd_list_element **show_list) | |
97c3646f AC |
449 | { |
450 | static const char *auto_boolean_enums[] = { "on", "off", "auto", NULL }; | |
451 | struct cmd_list_element *c; | |
9f064c95 | 452 | add_setshow_cmd_full (name, class, var_auto_boolean, var, |
2c5b56ce | 453 | set_doc, show_doc, help_doc, |
3b64bf98 | 454 | set_func, show_func, |
9f064c95 TT |
455 | set_list, show_list, |
456 | &c, NULL); | |
97c3646f | 457 | c->enums = auto_boolean_enums; |
97c3646f AC |
458 | } |
459 | ||
e707bbc2 AC |
460 | /* Add element named NAME to both the set and show command LISTs (the |
461 | list for set/show or some sublist thereof). CLASS is as in | |
462 | add_cmd. VAR is address of the variable which will contain the | |
ba3e8e46 | 463 | value. SET_DOC and SHOW_DOC are the documentation strings. */ |
e707bbc2 | 464 | void |
3b64bf98 AC |
465 | add_setshow_boolean_cmd (char *name, enum command_class class, int *var, |
466 | const char *set_doc, const char *show_doc, | |
335cca0d | 467 | const char *help_doc, |
e707bbc2 | 468 | cmd_sfunc_ftype *set_func, |
08546159 | 469 | show_value_ftype *show_func, |
e707bbc2 AC |
470 | struct cmd_list_element **set_list, |
471 | struct cmd_list_element **show_list) | |
f3796e26 AC |
472 | { |
473 | static const char *boolean_enums[] = { "on", "off", NULL }; | |
474 | struct cmd_list_element *c; | |
9f064c95 | 475 | add_setshow_cmd_full (name, class, var_boolean, var, |
2c5b56ce | 476 | set_doc, show_doc, help_doc, |
9f064c95 TT |
477 | set_func, show_func, |
478 | set_list, show_list, | |
479 | &c, NULL); | |
f3796e26 | 480 | c->enums = boolean_enums; |
f3796e26 AC |
481 | } |
482 | ||
b3f42336 AC |
483 | /* Add element named NAME to both the set and show command LISTs (the |
484 | list for set/show or some sublist thereof). */ | |
485 | void | |
486 | add_setshow_filename_cmd (char *name, enum command_class class, | |
487 | char **var, | |
488 | const char *set_doc, const char *show_doc, | |
335cca0d | 489 | const char *help_doc, |
b3f42336 | 490 | cmd_sfunc_ftype *set_func, |
08546159 | 491 | show_value_ftype *show_func, |
b3f42336 AC |
492 | struct cmd_list_element **set_list, |
493 | struct cmd_list_element **show_list) | |
494 | { | |
f397e303 | 495 | struct cmd_list_element *set_result; |
b3f42336 | 496 | add_setshow_cmd_full (name, class, var_filename, var, |
2c5b56ce | 497 | set_doc, show_doc, help_doc, |
b3f42336 AC |
498 | set_func, show_func, |
499 | set_list, show_list, | |
f397e303 AC |
500 | &set_result, NULL); |
501 | set_cmd_completer (set_result, filename_completer); | |
b3f42336 AC |
502 | } |
503 | ||
504 | /* Add element named NAME to both the set and show command LISTs (the | |
505 | list for set/show or some sublist thereof). */ | |
506 | void | |
507 | add_setshow_string_cmd (char *name, enum command_class class, | |
6df3bc68 MS |
508 | char **var, |
509 | const char *set_doc, const char *show_doc, | |
510 | const char *help_doc, | |
511 | cmd_sfunc_ftype *set_func, | |
512 | show_value_ftype *show_func, | |
513 | struct cmd_list_element **set_list, | |
514 | struct cmd_list_element **show_list) | |
b3f42336 AC |
515 | { |
516 | add_setshow_cmd_full (name, class, var_string, var, | |
2c5b56ce | 517 | set_doc, show_doc, help_doc, |
b3f42336 AC |
518 | set_func, show_func, |
519 | set_list, show_list, | |
520 | NULL, NULL); | |
521 | } | |
522 | ||
26c41df3 AC |
523 | /* Add element named NAME to both the set and show command LISTs (the |
524 | list for set/show or some sublist thereof). */ | |
525 | void | |
526 | add_setshow_string_noescape_cmd (char *name, enum command_class class, | |
527 | char **var, | |
528 | const char *set_doc, const char *show_doc, | |
529 | const char *help_doc, | |
530 | cmd_sfunc_ftype *set_func, | |
531 | show_value_ftype *show_func, | |
532 | struct cmd_list_element **set_list, | |
533 | struct cmd_list_element **show_list) | |
534 | { | |
535 | add_setshow_cmd_full (name, class, var_string_noescape, var, | |
536 | set_doc, show_doc, help_doc, | |
537 | set_func, show_func, | |
538 | set_list, show_list, | |
539 | NULL, NULL); | |
540 | } | |
541 | ||
b4b4ac0b AC |
542 | /* Add element named NAME to both the set and show command LISTs (the |
543 | list for set/show or some sublist thereof). */ | |
544 | void | |
545 | add_setshow_optional_filename_cmd (char *name, enum command_class class, | |
546 | char **var, | |
547 | const char *set_doc, const char *show_doc, | |
548 | const char *help_doc, | |
549 | cmd_sfunc_ftype *set_func, | |
550 | show_value_ftype *show_func, | |
551 | struct cmd_list_element **set_list, | |
552 | struct cmd_list_element **show_list) | |
553 | { | |
7f6a6314 PM |
554 | struct cmd_list_element *set_result; |
555 | ||
b4b4ac0b AC |
556 | add_setshow_cmd_full (name, class, var_optional_filename, var, |
557 | set_doc, show_doc, help_doc, | |
558 | set_func, show_func, | |
559 | set_list, show_list, | |
7f6a6314 PM |
560 | &set_result, NULL); |
561 | ||
562 | set_cmd_completer (set_result, filename_completer); | |
563 | ||
b4b4ac0b AC |
564 | } |
565 | ||
c0d88b1b AC |
566 | /* Add element named NAME to both the set and show command LISTs (the |
567 | list for set/show or some sublist thereof). CLASS is as in | |
568 | add_cmd. VAR is address of the variable which will contain the | |
569 | value. SET_DOC and SHOW_DOC are the documentation strings. */ | |
570 | void | |
571 | add_setshow_integer_cmd (char *name, enum command_class class, | |
47b667de | 572 | int *var, |
6df3bc68 MS |
573 | const char *set_doc, const char *show_doc, |
574 | const char *help_doc, | |
575 | cmd_sfunc_ftype *set_func, | |
576 | show_value_ftype *show_func, | |
577 | struct cmd_list_element **set_list, | |
578 | struct cmd_list_element **show_list) | |
c0d88b1b AC |
579 | { |
580 | add_setshow_cmd_full (name, class, var_integer, var, | |
581 | set_doc, show_doc, help_doc, | |
582 | set_func, show_func, | |
583 | set_list, show_list, | |
584 | NULL, NULL); | |
585 | } | |
586 | ||
25d29d70 AC |
587 | /* Add element named NAME to both the set and show command LISTs (the |
588 | list for set/show or some sublist thereof). CLASS is as in | |
589 | add_cmd. VAR is address of the variable which will contain the | |
ba3e8e46 | 590 | value. SET_DOC and SHOW_DOC are the documentation strings. */ |
25d29d70 | 591 | void |
3b64bf98 AC |
592 | add_setshow_uinteger_cmd (char *name, enum command_class class, |
593 | unsigned int *var, | |
594 | const char *set_doc, const char *show_doc, | |
335cca0d | 595 | const char *help_doc, |
25d29d70 | 596 | cmd_sfunc_ftype *set_func, |
08546159 | 597 | show_value_ftype *show_func, |
25d29d70 AC |
598 | struct cmd_list_element **set_list, |
599 | struct cmd_list_element **show_list) | |
600 | { | |
601 | add_setshow_cmd_full (name, class, var_uinteger, var, | |
2c5b56ce | 602 | set_doc, show_doc, help_doc, |
25d29d70 AC |
603 | set_func, show_func, |
604 | set_list, show_list, | |
605 | NULL, NULL); | |
606 | } | |
607 | ||
15170568 AC |
608 | /* Add element named NAME to both the set and show command LISTs (the |
609 | list for set/show or some sublist thereof). CLASS is as in | |
610 | add_cmd. VAR is address of the variable which will contain the | |
ba3e8e46 | 611 | value. SET_DOC and SHOW_DOC are the documentation strings. */ |
15170568 | 612 | void |
3b64bf98 AC |
613 | add_setshow_zinteger_cmd (char *name, enum command_class class, |
614 | int *var, | |
615 | const char *set_doc, const char *show_doc, | |
335cca0d | 616 | const char *help_doc, |
15170568 | 617 | cmd_sfunc_ftype *set_func, |
08546159 | 618 | show_value_ftype *show_func, |
15170568 AC |
619 | struct cmd_list_element **set_list, |
620 | struct cmd_list_element **show_list) | |
621 | { | |
622 | add_setshow_cmd_full (name, class, var_zinteger, var, | |
2c5b56ce | 623 | set_doc, show_doc, help_doc, |
15170568 AC |
624 | set_func, show_func, |
625 | set_list, show_list, | |
626 | NULL, NULL); | |
627 | } | |
628 | ||
b05dcbb7 TT |
629 | /* Remove the command named NAME from the command list. Return the |
630 | list commands which were aliased to the deleted command. If the | |
631 | command had no aliases, return NULL. */ | |
c906108c | 632 | |
b05dcbb7 | 633 | static struct cmd_list_element * |
fba45db2 | 634 | delete_cmd (char *name, struct cmd_list_element **list) |
c906108c | 635 | { |
b05dcbb7 TT |
636 | struct cmd_list_element *iter; |
637 | struct cmd_list_element **previous_chain_ptr; | |
638 | struct cmd_list_element *aliases = NULL; | |
c906108c | 639 | |
b05dcbb7 TT |
640 | previous_chain_ptr = list; |
641 | ||
642 | for (iter = *previous_chain_ptr; iter; iter = *previous_chain_ptr) | |
c906108c | 643 | { |
b05dcbb7 TT |
644 | if (strcmp (iter->name, name) == 0) |
645 | { | |
646 | if (iter->hookee_pre) | |
647 | iter->hookee_pre->hook_pre = 0; | |
648 | if (iter->hookee_post) | |
649 | iter->hookee_post->hook_post = 0; | |
650 | ||
651 | /* Update the link. */ | |
652 | *previous_chain_ptr = iter->next; | |
653 | ||
654 | aliases = iter->aliases; | |
655 | ||
656 | /* If this command was an alias, remove it from the list of | |
657 | aliases. */ | |
658 | if (iter->cmd_pointer) | |
659 | { | |
660 | struct cmd_list_element **prevp = &iter->cmd_pointer->aliases; | |
661 | struct cmd_list_element *a = *prevp; | |
662 | ||
663 | while (a != iter) | |
664 | { | |
665 | prevp = &a->alias_chain; | |
666 | a = *prevp; | |
667 | } | |
668 | *prevp = iter->alias_chain; | |
669 | } | |
670 | ||
671 | xfree (iter); | |
672 | ||
673 | /* We won't see another command with the same name. */ | |
674 | break; | |
675 | } | |
676 | else | |
677 | previous_chain_ptr = &iter->next; | |
c906108c SS |
678 | } |
679 | ||
b05dcbb7 | 680 | return aliases; |
c906108c | 681 | } |
d318976c FN |
682 | \f |
683 | /* Shorthands to the commands above. */ | |
684 | ||
685 | /* Add an element to the list of info subcommands. */ | |
686 | ||
687 | struct cmd_list_element * | |
688 | add_info (char *name, void (*fun) (char *, int), char *doc) | |
689 | { | |
690 | return add_cmd (name, no_class, fun, doc, &infolist); | |
691 | } | |
692 | ||
693 | /* Add an alias to the list of info subcommands. */ | |
694 | ||
695 | struct cmd_list_element * | |
696 | add_info_alias (char *name, char *oldname, int abbrev_flag) | |
697 | { | |
698 | return add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
699 | } | |
700 | ||
701 | /* Add an element to the list of commands. */ | |
702 | ||
703 | struct cmd_list_element * | |
704 | add_com (char *name, enum command_class class, void (*fun) (char *, int), | |
705 | char *doc) | |
706 | { | |
707 | return add_cmd (name, class, fun, doc, &cmdlist); | |
708 | } | |
709 | ||
710 | /* Add an alias or abbreviation command to the list of commands. */ | |
711 | ||
712 | struct cmd_list_element * | |
713 | add_com_alias (char *name, char *oldname, enum command_class class, | |
714 | int abbrev_flag) | |
715 | { | |
716 | return add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
717 | } | |
718 | \f | |
6837a0a2 DB |
719 | /* Recursively walk the commandlist structures, and print out the |
720 | documentation of commands that match our regex in either their | |
721 | name, or their documentation. | |
722 | */ | |
d318976c FN |
723 | void |
724 | apropos_cmd (struct ui_file *stream, struct cmd_list_element *commandlist, | |
6837a0a2 DB |
725 | struct re_pattern_buffer *regex, char *prefix) |
726 | { | |
d5b5ac79 | 727 | struct cmd_list_element *c; |
6837a0a2 DB |
728 | int returnvalue=1; /*Needed to avoid double printing*/ |
729 | /* Walk through the commands */ | |
730 | for (c=commandlist;c;c=c->next) | |
731 | { | |
732 | if (c->name != NULL) | |
733 | { | |
734 | /* Try to match against the name*/ | |
735 | returnvalue=re_search(regex,c->name,strlen(c->name),0,strlen(c->name),NULL); | |
736 | if (returnvalue >= 0) | |
737 | { | |
6e381ba0 VP |
738 | print_help_for_command (c, prefix, |
739 | 0 /* don't recurse */, stream); | |
6837a0a2 DB |
740 | } |
741 | } | |
742 | if (c->doc != NULL && returnvalue != 0) | |
743 | { | |
744 | /* Try to match against documentation */ | |
745 | if (re_search(regex,c->doc,strlen(c->doc),0,strlen(c->doc),NULL) >=0) | |
746 | { | |
6e381ba0 VP |
747 | print_help_for_command (c, prefix, |
748 | 0 /* don't recurse */, stream); | |
6837a0a2 DB |
749 | } |
750 | } | |
751 | /* Check if this command has subcommands */ | |
752 | if (c->prefixlist != NULL) | |
753 | { | |
754 | /* Recursively call ourselves on the subcommand list, | |
755 | passing the right prefix in. | |
756 | */ | |
d318976c | 757 | apropos_cmd (stream,*c->prefixlist,regex,c->prefixname); |
6837a0a2 DB |
758 | } |
759 | } | |
760 | } | |
c906108c SS |
761 | |
762 | /* This command really has to deal with two things: | |
763 | * 1) I want documentation on *this string* (usually called by | |
764 | * "help commandname"). | |
765 | * 2) I want documentation on *this list* (usually called by | |
766 | * giving a command that requires subcommands. Also called by saying | |
767 | * just "help".) | |
768 | * | |
769 | * I am going to split this into two seperate comamnds, help_cmd and | |
770 | * help_list. | |
771 | */ | |
772 | ||
773 | void | |
fba45db2 | 774 | help_cmd (char *command, struct ui_file *stream) |
c906108c SS |
775 | { |
776 | struct cmd_list_element *c; | |
777 | extern struct cmd_list_element *cmdlist; | |
778 | ||
779 | if (!command) | |
780 | { | |
781 | help_list (cmdlist, "", all_classes, stream); | |
782 | return; | |
783 | } | |
784 | ||
49a5a3a3 GM |
785 | if (strcmp (command, "all") == 0) |
786 | { | |
787 | help_all (stream); | |
788 | return; | |
789 | } | |
790 | ||
c906108c SS |
791 | c = lookup_cmd (&command, cmdlist, "", 0, 0); |
792 | ||
793 | if (c == 0) | |
794 | return; | |
795 | ||
796 | /* There are three cases here. | |
797 | If c->prefixlist is nonzero, we have a prefix command. | |
798 | Print its documentation, then list its subcommands. | |
c5aa993b | 799 | |
9f60d481 AC |
800 | If c->func is non NULL, we really have a command. Print its |
801 | documentation and return. | |
c5aa993b | 802 | |
9f60d481 AC |
803 | If c->func is NULL, we have a class name. Print its |
804 | documentation (as if it were a command) and then set class to the | |
805 | number of this class so that the commands in the class will be | |
806 | listed. */ | |
c906108c SS |
807 | |
808 | fputs_filtered (c->doc, stream); | |
809 | fputs_filtered ("\n", stream); | |
810 | ||
9f60d481 | 811 | if (c->prefixlist == 0 && c->func != NULL) |
c906108c SS |
812 | return; |
813 | fprintf_filtered (stream, "\n"); | |
814 | ||
815 | /* If this is a prefix command, print it's subcommands */ | |
816 | if (c->prefixlist) | |
817 | help_list (*c->prefixlist, c->prefixname, all_commands, stream); | |
818 | ||
819 | /* If this is a class name, print all of the commands in the class */ | |
9f60d481 | 820 | if (c->func == NULL) |
c906108c SS |
821 | help_list (cmdlist, "", c->class, stream); |
822 | ||
73bc900d FN |
823 | if (c->hook_pre || c->hook_post) |
824 | fprintf_filtered (stream, | |
825 | "\nThis command has a hook (or hooks) defined:\n"); | |
826 | ||
827 | if (c->hook_pre) | |
327529e9 | 828 | fprintf_filtered (stream, |
72fe0832 | 829 | "\tThis command is run after : %s (pre hook)\n", |
73bc900d FN |
830 | c->hook_pre->name); |
831 | if (c->hook_post) | |
327529e9 | 832 | fprintf_filtered (stream, |
72fe0832 | 833 | "\tThis command is run before : %s (post hook)\n", |
73bc900d | 834 | c->hook_post->name); |
c906108c SS |
835 | } |
836 | ||
837 | /* | |
838 | * Get a specific kind of help on a command list. | |
839 | * | |
840 | * LIST is the list. | |
841 | * CMDTYPE is the prefix to use in the title string. | |
842 | * CLASS is the class with which to list the nodes of this list (see | |
843 | * documentation for help_cmd_list below), As usual, ALL_COMMANDS for | |
844 | * everything, ALL_CLASSES for just classes, and non-negative for only things | |
845 | * in a specific class. | |
846 | * and STREAM is the output stream on which to print things. | |
847 | * If you call this routine with a class >= 0, it recurses. | |
848 | */ | |
849 | void | |
fba45db2 KB |
850 | help_list (struct cmd_list_element *list, char *cmdtype, |
851 | enum command_class class, struct ui_file *stream) | |
c906108c SS |
852 | { |
853 | int len; | |
854 | char *cmdtype1, *cmdtype2; | |
c5aa993b | 855 | |
c906108c SS |
856 | /* If CMDTYPE is "foo ", CMDTYPE1 gets " foo" and CMDTYPE2 gets "foo sub" */ |
857 | len = strlen (cmdtype); | |
858 | cmdtype1 = (char *) alloca (len + 1); | |
859 | cmdtype1[0] = 0; | |
860 | cmdtype2 = (char *) alloca (len + 4); | |
861 | cmdtype2[0] = 0; | |
862 | if (len) | |
863 | { | |
864 | cmdtype1[0] = ' '; | |
865 | strncpy (cmdtype1 + 1, cmdtype, len - 1); | |
866 | cmdtype1[len] = 0; | |
867 | strncpy (cmdtype2, cmdtype, len - 1); | |
868 | strcpy (cmdtype2 + len - 1, " sub"); | |
869 | } | |
870 | ||
871 | if (class == all_classes) | |
872 | fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2); | |
873 | else | |
874 | fprintf_filtered (stream, "List of %scommands:\n\n", cmdtype2); | |
875 | ||
c5aa993b | 876 | help_cmd_list (list, class, cmdtype, (int) class >= 0, stream); |
c906108c SS |
877 | |
878 | if (class == all_classes) | |
de74f71f MS |
879 | { |
880 | fprintf_filtered (stream, "\n\ | |
881 | Type \"help%s\" followed by a class name for a list of commands in ", | |
882 | cmdtype1); | |
883 | wrap_here (""); | |
884 | fprintf_filtered (stream, "that class."); | |
6e381ba0 VP |
885 | |
886 | fprintf_filtered (stream, "\n\ | |
887 | Type \"help all\" for the list of all commands."); | |
de74f71f | 888 | } |
c906108c | 889 | |
de74f71f | 890 | fprintf_filtered (stream, "\nType \"help%s\" followed by %scommand name ", |
c5aa993b | 891 | cmdtype1, cmdtype2); |
de74f71f MS |
892 | wrap_here (""); |
893 | fputs_filtered ("for ", stream); | |
894 | wrap_here (""); | |
895 | fputs_filtered ("full ", stream); | |
896 | wrap_here (""); | |
897 | fputs_filtered ("documentation.\n", stream); | |
6e381ba0 VP |
898 | fputs_filtered ("Type \"apropos word\" to search " |
899 | "for commands related to \"word\".\n", stream); | |
de74f71f MS |
900 | fputs_filtered ("Command name abbreviations are allowed if unambiguous.\n", |
901 | stream); | |
c906108c | 902 | } |
c5aa993b | 903 | |
49a5a3a3 | 904 | static void |
c85871a3 | 905 | help_all (struct ui_file *stream) |
49a5a3a3 GM |
906 | { |
907 | struct cmd_list_element *c; | |
908 | extern struct cmd_list_element *cmdlist; | |
6e381ba0 | 909 | int seen_unclassified = 0; |
49a5a3a3 GM |
910 | |
911 | for (c = cmdlist; c; c = c->next) | |
912 | { | |
913 | if (c->abbrev_flag) | |
914 | continue; | |
49a5a3a3 | 915 | /* If this is a class name, print all of the commands in the class */ |
6e381ba0 VP |
916 | |
917 | if (c->func == NULL) | |
918 | { | |
919 | fprintf_filtered (stream, "\nCommand class: %s\n\n", c->name); | |
920 | help_cmd_list (cmdlist, c->class, "", 1, stream); | |
921 | } | |
49a5a3a3 | 922 | } |
6e381ba0 VP |
923 | |
924 | /* While it's expected that all commands are in some class, | |
925 | as a safety measure, we'll print commands outside of any | |
926 | class at the end. */ | |
927 | ||
928 | for (c = cmdlist; c; c = c->next) | |
929 | { | |
930 | if (c->abbrev_flag) | |
931 | continue; | |
932 | ||
933 | if (c->class == no_class) | |
934 | { | |
935 | if (!seen_unclassified) | |
936 | { | |
937 | fprintf_filtered (stream, "\nUnclassified commands\n\n"); | |
938 | seen_unclassified = 1; | |
939 | } | |
940 | print_help_for_command (c, "", 1, stream); | |
941 | } | |
942 | } | |
943 | ||
49a5a3a3 GM |
944 | } |
945 | ||
c906108c | 946 | /* Print only the first line of STR on STREAM. */ |
d318976c | 947 | void |
fba45db2 | 948 | print_doc_line (struct ui_file *stream, char *str) |
c906108c SS |
949 | { |
950 | static char *line_buffer = 0; | |
951 | static int line_size; | |
d5b5ac79 | 952 | char *p; |
c906108c SS |
953 | |
954 | if (!line_buffer) | |
955 | { | |
956 | line_size = 80; | |
957 | line_buffer = (char *) xmalloc (line_size); | |
958 | } | |
959 | ||
960 | p = str; | |
961 | while (*p && *p != '\n' && *p != '.' && *p != ',') | |
962 | p++; | |
963 | if (p - str > line_size - 1) | |
964 | { | |
965 | line_size = p - str + 1; | |
b8c9b27d | 966 | xfree (line_buffer); |
c906108c SS |
967 | line_buffer = (char *) xmalloc (line_size); |
968 | } | |
969 | strncpy (line_buffer, str, p - str); | |
970 | line_buffer[p - str] = '\0'; | |
971 | if (islower (line_buffer[0])) | |
972 | line_buffer[0] = toupper (line_buffer[0]); | |
8b93c638 | 973 | ui_out_text (uiout, line_buffer); |
c906108c SS |
974 | } |
975 | ||
6e381ba0 VP |
976 | /* Print one-line help for command C. |
977 | If RECURSE is non-zero, also print one-line descriptions | |
978 | of all prefixed subcommands. */ | |
979 | static void | |
980 | print_help_for_command (struct cmd_list_element *c, char *prefix, int recurse, | |
981 | struct ui_file *stream) | |
982 | { | |
983 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
984 | print_doc_line (stream, c->doc); | |
985 | fputs_filtered ("\n", stream); | |
986 | ||
987 | if (recurse | |
988 | && c->prefixlist != 0 | |
989 | && c->abbrev_flag == 0) | |
990 | /* Subcommands of a prefix command typically have 'all_commands' | |
991 | as class. If we pass CLASS to recursive invocation, | |
992 | most often we won't see anything. */ | |
993 | help_cmd_list (*c->prefixlist, all_commands, c->prefixname, 1, stream); | |
994 | } | |
995 | ||
c906108c SS |
996 | /* |
997 | * Implement a help command on command list LIST. | |
998 | * RECURSE should be non-zero if this should be done recursively on | |
999 | * all sublists of LIST. | |
1000 | * PREFIX is the prefix to print before each command name. | |
1001 | * STREAM is the stream upon which the output should be written. | |
1002 | * CLASS should be: | |
c5aa993b | 1003 | * A non-negative class number to list only commands in that |
c906108c | 1004 | * class. |
c5aa993b JM |
1005 | * ALL_COMMANDS to list all commands in list. |
1006 | * ALL_CLASSES to list all classes in list. | |
c906108c SS |
1007 | * |
1008 | * Note that RECURSE will be active on *all* sublists, not just the | |
1009 | * ones selected by the criteria above (ie. the selection mechanism | |
1010 | * is at the low level, not the high-level). | |
1011 | */ | |
1012 | void | |
fba45db2 KB |
1013 | help_cmd_list (struct cmd_list_element *list, enum command_class class, |
1014 | char *prefix, int recurse, struct ui_file *stream) | |
c906108c | 1015 | { |
d5b5ac79 | 1016 | struct cmd_list_element *c; |
c906108c SS |
1017 | |
1018 | for (c = list; c; c = c->next) | |
6e381ba0 | 1019 | { |
c906108c SS |
1020 | if (c->abbrev_flag == 0 && |
1021 | (class == all_commands | |
9f60d481 AC |
1022 | || (class == all_classes && c->func == NULL) |
1023 | || (class == c->class && c->func != NULL))) | |
c906108c | 1024 | { |
6e381ba0 | 1025 | print_help_for_command (c, prefix, recurse, stream); |
c906108c | 1026 | } |
c906108c SS |
1027 | } |
1028 | } | |
c906108c | 1029 | \f |
c5aa993b | 1030 | |
c906108c SS |
1031 | /* Search the input clist for 'command'. Return the command if |
1032 | found (or NULL if not), and return the number of commands | |
1033 | found in nfound */ | |
1034 | ||
1035 | static struct cmd_list_element * | |
fba45db2 KB |
1036 | find_cmd (char *command, int len, struct cmd_list_element *clist, |
1037 | int ignore_help_classes, int *nfound) | |
c906108c SS |
1038 | { |
1039 | struct cmd_list_element *found, *c; | |
1040 | ||
c5aa993b | 1041 | found = (struct cmd_list_element *) NULL; |
c906108c SS |
1042 | *nfound = 0; |
1043 | for (c = clist; c; c = c->next) | |
1044 | if (!strncmp (command, c->name, len) | |
9f60d481 | 1045 | && (!ignore_help_classes || c->func)) |
c906108c | 1046 | { |
c5aa993b JM |
1047 | found = c; |
1048 | (*nfound)++; | |
1049 | if (c->name[len] == '\0') | |
1050 | { | |
1051 | *nfound = 1; | |
1052 | break; | |
1053 | } | |
c906108c SS |
1054 | } |
1055 | return found; | |
1056 | } | |
1057 | ||
3386243e AS |
1058 | static int |
1059 | find_command_name_length (const char *text) | |
1060 | { | |
1061 | const char *p = text; | |
1062 | ||
1063 | /* Treating underscores as part of command words is important | |
1064 | so that "set args_foo()" doesn't get interpreted as | |
1065 | "set args _foo()". */ | |
1066 | /* Some characters are only used for TUI specific commands. However, they | |
1067 | are always allowed for the sake of consistency. | |
1068 | The XDB compatibility characters are only allowed when using the right | |
1069 | mode because they clash with other GDB commands - specifically '/' is | |
1070 | used as a suffix for print, examine and display. | |
1071 | Note that this is larger than the character set allowed when creating | |
1072 | user-defined commands. */ | |
1073 | while (isalnum (*p) || *p == '-' || *p == '_' || | |
1074 | /* Characters used by TUI specific commands. */ | |
1075 | *p == '+' || *p == '<' || *p == '>' || *p == '$' || | |
1076 | /* Characters used for XDB compatibility. */ | |
1077 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))) | |
1078 | p++; | |
1079 | ||
1080 | return p - text; | |
1081 | } | |
1082 | ||
c906108c SS |
1083 | /* This routine takes a line of TEXT and a CLIST in which to start the |
1084 | lookup. When it returns it will have incremented the text pointer past | |
1085 | the section of text it matched, set *RESULT_LIST to point to the list in | |
1086 | which the last word was matched, and will return a pointer to the cmd | |
1087 | list element which the text matches. It will return NULL if no match at | |
1088 | all was possible. It will return -1 (cast appropriately, ick) if ambigous | |
1089 | matches are possible; in this case *RESULT_LIST will be set to point to | |
1090 | the list in which there are ambiguous choices (and *TEXT will be set to | |
1091 | the ambiguous text string). | |
1092 | ||
1093 | If the located command was an abbreviation, this routine returns the base | |
1094 | command of the abbreviation. | |
1095 | ||
1096 | It does no error reporting whatsoever; control will always return | |
1097 | to the superior routine. | |
1098 | ||
1099 | In the case of an ambiguous return (-1), *RESULT_LIST will be set to point | |
1100 | at the prefix_command (ie. the best match) *or* (special case) will be NULL | |
1101 | if no prefix command was ever found. For example, in the case of "info a", | |
1102 | "info" matches without ambiguity, but "a" could be "args" or "address", so | |
1103 | *RESULT_LIST is set to the cmd_list_element for "info". So in this case | |
1104 | RESULT_LIST should not be interpeted as a pointer to the beginning of a | |
1105 | list; it simply points to a specific command. In the case of an ambiguous | |
1106 | return *TEXT is advanced past the last non-ambiguous prefix (e.g. | |
1107 | "info t" can be "info types" or "info target"; upon return *TEXT has been | |
1108 | advanced past "info "). | |
1109 | ||
1110 | If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise | |
1111 | affect the operation). | |
1112 | ||
1113 | This routine does *not* modify the text pointed to by TEXT. | |
c5aa993b | 1114 | |
c906108c SS |
1115 | If IGNORE_HELP_CLASSES is nonzero, ignore any command list elements which |
1116 | are actually help classes rather than commands (i.e. the function field of | |
1117 | the struct cmd_list_element is NULL). */ | |
1118 | ||
1119 | struct cmd_list_element * | |
fba45db2 KB |
1120 | lookup_cmd_1 (char **text, struct cmd_list_element *clist, |
1121 | struct cmd_list_element **result_list, int ignore_help_classes) | |
c906108c | 1122 | { |
3386243e | 1123 | char *command; |
c906108c SS |
1124 | int len, tmp, nfound; |
1125 | struct cmd_list_element *found, *c; | |
56382845 | 1126 | char *line = *text; |
c906108c SS |
1127 | |
1128 | while (**text == ' ' || **text == '\t') | |
1129 | (*text)++; | |
1130 | ||
3386243e AS |
1131 | /* Identify the name of the command. */ |
1132 | len = find_command_name_length (*text); | |
c906108c SS |
1133 | |
1134 | /* If nothing but whitespace, return 0. */ | |
3386243e | 1135 | if (len == 0) |
c906108c | 1136 | return 0; |
c5aa993b | 1137 | |
c906108c SS |
1138 | /* *text and p now bracket the first command word to lookup (and |
1139 | it's length is len). We copy this into a local temporary */ | |
1140 | ||
1141 | ||
1142 | command = (char *) alloca (len + 1); | |
22ad7fee | 1143 | memcpy (command, *text, len); |
c906108c SS |
1144 | command[len] = '\0'; |
1145 | ||
1146 | /* Look it up. */ | |
1147 | found = 0; | |
1148 | nfound = 0; | |
c5aa993b | 1149 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); |
c906108c SS |
1150 | |
1151 | /* | |
c5aa993b JM |
1152 | ** We didn't find the command in the entered case, so lower case it |
1153 | ** and search again. | |
1154 | */ | |
c906108c SS |
1155 | if (!found || nfound == 0) |
1156 | { | |
1157 | for (tmp = 0; tmp < len; tmp++) | |
c5aa993b JM |
1158 | { |
1159 | char x = command[tmp]; | |
1160 | command[tmp] = isupper (x) ? tolower (x) : x; | |
1161 | } | |
1162 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); | |
c906108c SS |
1163 | } |
1164 | ||
1165 | /* If nothing matches, we have a simple failure. */ | |
1166 | if (nfound == 0) | |
1167 | return 0; | |
1168 | ||
1169 | if (nfound > 1) | |
1170 | { | |
1171 | if (result_list != NULL) | |
1172 | /* Will be modified in calling routine | |
1173 | if we know what the prefix command is. */ | |
c5aa993b JM |
1174 | *result_list = 0; |
1175 | return (struct cmd_list_element *) -1; /* Ambiguous. */ | |
c906108c SS |
1176 | } |
1177 | ||
1178 | /* We've matched something on this list. Move text pointer forward. */ | |
1179 | ||
3386243e | 1180 | *text += len; |
c906108c | 1181 | |
c906108c | 1182 | if (found->cmd_pointer) |
56382845 FN |
1183 | { |
1184 | /* We drop the alias (abbreviation) in favor of the command it is | |
1185 | pointing to. If the alias is deprecated, though, we need to | |
1186 | warn the user about it before we drop it. Note that while we | |
1187 | are warning about the alias, we may also warn about the command | |
1188 | itself and we will adjust the appropriate DEPRECATED_WARN_USER | |
1189 | flags */ | |
1190 | ||
1191 | if (found->flags & DEPRECATED_WARN_USER) | |
938f5214 | 1192 | deprecated_cmd_warning (&line); |
56382845 FN |
1193 | found = found->cmd_pointer; |
1194 | } | |
c906108c SS |
1195 | /* If we found a prefix command, keep looking. */ |
1196 | ||
1197 | if (found->prefixlist) | |
1198 | { | |
1199 | c = lookup_cmd_1 (text, *found->prefixlist, result_list, | |
1200 | ignore_help_classes); | |
1201 | if (!c) | |
1202 | { | |
1203 | /* Didn't find anything; this is as far as we got. */ | |
1204 | if (result_list != NULL) | |
1205 | *result_list = clist; | |
1206 | return found; | |
1207 | } | |
1208 | else if (c == (struct cmd_list_element *) -1) | |
1209 | { | |
1210 | /* We've gotten this far properly, but the next step | |
1211 | is ambiguous. We need to set the result list to the best | |
1212 | we've found (if an inferior hasn't already set it). */ | |
1213 | if (result_list != NULL) | |
1214 | if (!*result_list) | |
1215 | /* This used to say *result_list = *found->prefixlist | |
c5aa993b JM |
1216 | If that was correct, need to modify the documentation |
1217 | at the top of this function to clarify what is supposed | |
1218 | to be going on. */ | |
c906108c SS |
1219 | *result_list = found; |
1220 | return c; | |
1221 | } | |
1222 | else | |
1223 | { | |
1224 | /* We matched! */ | |
1225 | return c; | |
1226 | } | |
1227 | } | |
1228 | else | |
1229 | { | |
1230 | if (result_list != NULL) | |
1231 | *result_list = clist; | |
1232 | return found; | |
1233 | } | |
1234 | } | |
1235 | ||
1236 | /* All this hair to move the space to the front of cmdtype */ | |
1237 | ||
1238 | static void | |
fba45db2 | 1239 | undef_cmd_error (char *cmdtype, char *q) |
c906108c | 1240 | { |
8a3fe4f8 | 1241 | error (_("Undefined %scommand: \"%s\". Try \"help%s%.*s\"."), |
c5aa993b JM |
1242 | cmdtype, |
1243 | q, | |
1244 | *cmdtype ? " " : "", | |
823ca731 | 1245 | (int) strlen (cmdtype) - 1, |
c5aa993b | 1246 | cmdtype); |
c906108c SS |
1247 | } |
1248 | ||
1249 | /* Look up the contents of *LINE as a command in the command list LIST. | |
1250 | LIST is a chain of struct cmd_list_element's. | |
1251 | If it is found, return the struct cmd_list_element for that command | |
1252 | and update *LINE to point after the command name, at the first argument. | |
1253 | If not found, call error if ALLOW_UNKNOWN is zero | |
1254 | otherwise (or if error returns) return zero. | |
1255 | Call error if specified command is ambiguous, | |
1256 | unless ALLOW_UNKNOWN is negative. | |
1257 | CMDTYPE precedes the word "command" in the error message. | |
1258 | ||
1259 | If INGNORE_HELP_CLASSES is nonzero, ignore any command list | |
1260 | elements which are actually help classes rather than commands (i.e. | |
1261 | the function field of the struct cmd_list_element is 0). */ | |
1262 | ||
1263 | struct cmd_list_element * | |
fba45db2 KB |
1264 | lookup_cmd (char **line, struct cmd_list_element *list, char *cmdtype, |
1265 | int allow_unknown, int ignore_help_classes) | |
c906108c SS |
1266 | { |
1267 | struct cmd_list_element *last_list = 0; | |
3cebf8d8 | 1268 | struct cmd_list_element *c; |
c64601c7 FN |
1269 | |
1270 | /* Note: Do not remove trailing whitespace here because this | |
1271 | would be wrong for complete_command. Jim Kingdon */ | |
c5aa993b | 1272 | |
3cebf8d8 MS |
1273 | if (!*line) |
1274 | error (_("Lack of needed %scommand"), cmdtype); | |
1275 | ||
1276 | c = lookup_cmd_1 (line, list, &last_list, ignore_help_classes); | |
1277 | ||
c906108c SS |
1278 | if (!c) |
1279 | { | |
1280 | if (!allow_unknown) | |
1281 | { | |
3cebf8d8 MS |
1282 | char *q; |
1283 | int len = find_command_name_length (*line); | |
c906108c | 1284 | |
3cebf8d8 MS |
1285 | q = (char *) alloca (len + 1); |
1286 | strncpy (q, *line, len); | |
1287 | q[len] = '\0'; | |
1288 | undef_cmd_error (cmdtype, q); | |
c906108c SS |
1289 | } |
1290 | else | |
1291 | return 0; | |
1292 | } | |
1293 | else if (c == (struct cmd_list_element *) -1) | |
1294 | { | |
1295 | /* Ambigous. Local values should be off prefixlist or called | |
c5aa993b | 1296 | values. */ |
c906108c SS |
1297 | int local_allow_unknown = (last_list ? last_list->allow_unknown : |
1298 | allow_unknown); | |
1299 | char *local_cmdtype = last_list ? last_list->prefixname : cmdtype; | |
1300 | struct cmd_list_element *local_list = | |
c5aa993b JM |
1301 | (last_list ? *(last_list->prefixlist) : list); |
1302 | ||
c906108c SS |
1303 | if (local_allow_unknown < 0) |
1304 | { | |
1305 | if (last_list) | |
1306 | return last_list; /* Found something. */ | |
1307 | else | |
1308 | return 0; /* Found nothing. */ | |
1309 | } | |
1310 | else | |
1311 | { | |
1312 | /* Report as error. */ | |
1313 | int amb_len; | |
1314 | char ambbuf[100]; | |
1315 | ||
1316 | for (amb_len = 0; | |
1317 | ((*line)[amb_len] && (*line)[amb_len] != ' ' | |
1318 | && (*line)[amb_len] != '\t'); | |
1319 | amb_len++) | |
1320 | ; | |
c5aa993b | 1321 | |
c906108c SS |
1322 | ambbuf[0] = 0; |
1323 | for (c = local_list; c; c = c->next) | |
1324 | if (!strncmp (*line, c->name, amb_len)) | |
1325 | { | |
c5aa993b | 1326 | if (strlen (ambbuf) + strlen (c->name) + 6 < (int) sizeof ambbuf) |
c906108c SS |
1327 | { |
1328 | if (strlen (ambbuf)) | |
1329 | strcat (ambbuf, ", "); | |
1330 | strcat (ambbuf, c->name); | |
1331 | } | |
1332 | else | |
1333 | { | |
1334 | strcat (ambbuf, ".."); | |
1335 | break; | |
1336 | } | |
1337 | } | |
8a3fe4f8 | 1338 | error (_("Ambiguous %scommand \"%s\": %s."), local_cmdtype, |
c906108c SS |
1339 | *line, ambbuf); |
1340 | return 0; /* lint */ | |
1341 | } | |
1342 | } | |
1343 | else | |
1344 | { | |
1345 | /* We've got something. It may still not be what the caller | |
1346 | wants (if this command *needs* a subcommand). */ | |
1347 | while (**line == ' ' || **line == '\t') | |
1348 | (*line)++; | |
1349 | ||
1350 | if (c->prefixlist && **line && !c->allow_unknown) | |
1351 | undef_cmd_error (c->prefixname, *line); | |
1352 | ||
1353 | /* Seems to be what he wants. Return it. */ | |
1354 | return c; | |
1355 | } | |
1356 | return 0; | |
1357 | } | |
c5aa993b | 1358 | |
56382845 FN |
1359 | /* We are here presumably because an alias or command in *TEXT is |
1360 | deprecated and a warning message should be generated. This function | |
1361 | decodes *TEXT and potentially generates a warning message as outlined | |
1362 | below. | |
1363 | ||
1364 | Example for 'set endian big' which has a fictitious alias 'seb'. | |
1365 | ||
1366 | If alias wasn't used in *TEXT, and the command is deprecated: | |
1367 | "warning: 'set endian big' is deprecated." | |
1368 | ||
1369 | If alias was used, and only the alias is deprecated: | |
1370 | "warning: 'seb' an alias for the command 'set endian big' is deprecated." | |
1371 | ||
1372 | If alias was used and command is deprecated (regardless of whether the | |
1373 | alias itself is deprecated: | |
1374 | ||
1375 | "warning: 'set endian big' (seb) is deprecated." | |
1376 | ||
1377 | After the message has been sent, clear the appropriate flags in the | |
1378 | command and/or the alias so the user is no longer bothered. | |
1379 | ||
1380 | */ | |
1381 | void | |
1382 | deprecated_cmd_warning (char **text) | |
1383 | { | |
1384 | struct cmd_list_element *alias = NULL; | |
1385 | struct cmd_list_element *prefix_cmd = NULL; | |
1386 | struct cmd_list_element *cmd = NULL; | |
1387 | struct cmd_list_element *c; | |
1388 | char *type; | |
edefbb7c | 1389 | |
56382845 FN |
1390 | if (!lookup_cmd_composition (*text, &alias, &prefix_cmd, &cmd)) |
1391 | /* return if text doesn't evaluate to a command */ | |
1392 | return; | |
1393 | ||
1394 | if (!((alias ? (alias->flags & DEPRECATED_WARN_USER) : 0) | |
1395 | || (cmd->flags & DEPRECATED_WARN_USER) ) ) | |
1396 | /* return if nothing is deprecated */ | |
1397 | return; | |
1398 | ||
1399 | printf_filtered ("Warning:"); | |
1400 | ||
1401 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1402 | printf_filtered (" '%s', an alias for the", alias->name); | |
1403 | ||
1404 | printf_filtered (" command '"); | |
1405 | ||
1406 | if (prefix_cmd) | |
1407 | printf_filtered ("%s", prefix_cmd->prefixname); | |
1408 | ||
1409 | printf_filtered ("%s", cmd->name); | |
1410 | ||
1411 | if (alias && (cmd->flags & CMD_DEPRECATED)) | |
1412 | printf_filtered ("' (%s) is deprecated.\n", alias->name); | |
1413 | else | |
1414 | printf_filtered ("' is deprecated.\n"); | |
1415 | ||
1416 | ||
1417 | /* if it is only the alias that is deprecated, we want to indicate the | |
1418 | new alias, otherwise we'll indicate the new command */ | |
1419 | ||
1420 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1421 | { | |
1422 | if (alias->replacement) | |
1423 | printf_filtered ("Use '%s'.\n\n", alias->replacement); | |
1424 | else | |
1425 | printf_filtered ("No alternative known.\n\n"); | |
1426 | } | |
1427 | else | |
1428 | { | |
1429 | if (cmd->replacement) | |
1430 | printf_filtered ("Use '%s'.\n\n", cmd->replacement); | |
1431 | else | |
1432 | printf_filtered ("No alternative known.\n\n"); | |
1433 | } | |
1434 | ||
1435 | /* We've warned you, now we'll keep quiet */ | |
1436 | if (alias) | |
1437 | alias->flags &= ~DEPRECATED_WARN_USER; | |
1438 | ||
1439 | cmd->flags &= ~DEPRECATED_WARN_USER; | |
1440 | } | |
1441 | ||
1442 | ||
1443 | ||
1444 | /* Look up the contents of LINE as a command in the command list 'cmdlist'. | |
1445 | Return 1 on success, 0 on failure. | |
1446 | ||
1447 | If LINE refers to an alias, *alias will point to that alias. | |
1448 | ||
1449 | If LINE is a postfix command (i.e. one that is preceeded by a prefix | |
1450 | command) set *prefix_cmd. | |
1451 | ||
1452 | Set *cmd to point to the command LINE indicates. | |
1453 | ||
1454 | If any of *alias, *prefix_cmd, or *cmd cannot be determined or do not | |
1455 | exist, they are NULL when we return. | |
1456 | ||
1457 | */ | |
1458 | int | |
1459 | lookup_cmd_composition (char *text, | |
1460 | struct cmd_list_element **alias, | |
1461 | struct cmd_list_element **prefix_cmd, | |
1462 | struct cmd_list_element **cmd) | |
1463 | { | |
3386243e | 1464 | char *command; |
56382845 FN |
1465 | int len, tmp, nfound; |
1466 | struct cmd_list_element *cur_list; | |
1467 | struct cmd_list_element *prev_cmd; | |
1468 | *alias = NULL; | |
1469 | *prefix_cmd = NULL; | |
1470 | *cmd = NULL; | |
1471 | ||
1472 | cur_list = cmdlist; | |
1473 | ||
1474 | while (1) | |
1475 | { | |
1476 | /* Go through as many command lists as we need to | |
1477 | to find the command TEXT refers to. */ | |
1478 | ||
1479 | prev_cmd = *cmd; | |
1480 | ||
1481 | while (*text == ' ' || *text == '\t') | |
1482 | (text)++; | |
1483 | ||
3386243e AS |
1484 | /* Identify the name of the command. */ |
1485 | len = find_command_name_length (text); | |
56382845 FN |
1486 | |
1487 | /* If nothing but whitespace, return. */ | |
3386243e AS |
1488 | if (len == 0) |
1489 | return 0; | |
56382845 | 1490 | |
3386243e | 1491 | /* text is the start of the first command word to lookup (and |
56382845 FN |
1492 | it's length is len). We copy this into a local temporary */ |
1493 | ||
1494 | command = (char *) alloca (len + 1); | |
22ad7fee | 1495 | memcpy (command, text, len); |
56382845 FN |
1496 | command[len] = '\0'; |
1497 | ||
1498 | /* Look it up. */ | |
1499 | *cmd = 0; | |
1500 | nfound = 0; | |
1501 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1502 | ||
1503 | /* We didn't find the command in the entered case, so lower case it | |
1504 | and search again. | |
1505 | */ | |
1506 | if (!*cmd || nfound == 0) | |
1507 | { | |
1508 | for (tmp = 0; tmp < len; tmp++) | |
1509 | { | |
1510 | char x = command[tmp]; | |
1511 | command[tmp] = isupper (x) ? tolower (x) : x; | |
1512 | } | |
1513 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1514 | } | |
1515 | ||
1516 | if (*cmd == (struct cmd_list_element *) -1) | |
1517 | { | |
1518 | return 0; /* ambiguous */ | |
1519 | } | |
1520 | ||
1521 | if (*cmd == NULL) | |
1522 | return 0; /* nothing found */ | |
1523 | else | |
1524 | { | |
1525 | if ((*cmd)->cmd_pointer) | |
1526 | { | |
1527 | /* cmd was actually an alias, we note that an alias was used | |
1528 | (by assigning *alais) and we set *cmd. | |
1529 | */ | |
1530 | *alias = *cmd; | |
1531 | *cmd = (*cmd)->cmd_pointer; | |
1532 | } | |
1533 | *prefix_cmd = prev_cmd; | |
1534 | } | |
1535 | if ((*cmd)->prefixlist) | |
1536 | cur_list = *(*cmd)->prefixlist; | |
1537 | else | |
1538 | return 1; | |
1539 | ||
3386243e | 1540 | text += len; |
56382845 FN |
1541 | } |
1542 | } | |
1543 | ||
c906108c SS |
1544 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ |
1545 | ||
1546 | /* Return a vector of char pointers which point to the different | |
1547 | possible completions in LIST of TEXT. | |
1548 | ||
1549 | WORD points in the same buffer as TEXT, and completions should be | |
1550 | returned relative to this position. For example, suppose TEXT is "foo" | |
1551 | and we want to complete to "foobar". If WORD is "oo", return | |
1552 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1553 | ||
1554 | char ** | |
fba45db2 | 1555 | complete_on_cmdlist (struct cmd_list_element *list, char *text, char *word) |
c906108c SS |
1556 | { |
1557 | struct cmd_list_element *ptr; | |
1558 | char **matchlist; | |
1559 | int sizeof_matchlist; | |
1560 | int matches; | |
1561 | int textlen = strlen (text); | |
1562 | ||
1563 | sizeof_matchlist = 10; | |
1564 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1565 | matches = 0; | |
1566 | ||
1567 | for (ptr = list; ptr; ptr = ptr->next) | |
1568 | if (!strncmp (ptr->name, text, textlen) | |
1569 | && !ptr->abbrev_flag | |
9f60d481 | 1570 | && (ptr->func |
c906108c SS |
1571 | || ptr->prefixlist)) |
1572 | { | |
1573 | if (matches == sizeof_matchlist) | |
1574 | { | |
1575 | sizeof_matchlist *= 2; | |
c5aa993b | 1576 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1577 | (sizeof_matchlist |
1578 | * sizeof (char *))); | |
1579 | } | |
1580 | ||
c5aa993b | 1581 | matchlist[matches] = (char *) |
c906108c SS |
1582 | xmalloc (strlen (word) + strlen (ptr->name) + 1); |
1583 | if (word == text) | |
1584 | strcpy (matchlist[matches], ptr->name); | |
1585 | else if (word > text) | |
1586 | { | |
1587 | /* Return some portion of ptr->name. */ | |
1588 | strcpy (matchlist[matches], ptr->name + (word - text)); | |
1589 | } | |
1590 | else | |
1591 | { | |
1592 | /* Return some of text plus ptr->name. */ | |
1593 | strncpy (matchlist[matches], word, text - word); | |
1594 | matchlist[matches][text - word] = '\0'; | |
1595 | strcat (matchlist[matches], ptr->name); | |
1596 | } | |
1597 | ++matches; | |
1598 | } | |
1599 | ||
1600 | if (matches == 0) | |
1601 | { | |
b8c9b27d | 1602 | xfree (matchlist); |
c906108c SS |
1603 | matchlist = 0; |
1604 | } | |
1605 | else | |
1606 | { | |
c5aa993b JM |
1607 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1608 | * sizeof (char *))); | |
c906108c SS |
1609 | matchlist[matches] = (char *) 0; |
1610 | } | |
1611 | ||
1612 | return matchlist; | |
1613 | } | |
1614 | ||
1615 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
1616 | ||
1617 | /* Return a vector of char pointers which point to the different | |
1618 | possible completions in CMD of TEXT. | |
1619 | ||
1620 | WORD points in the same buffer as TEXT, and completions should be | |
1621 | returned relative to this position. For example, suppose TEXT is "foo" | |
1622 | and we want to complete to "foobar". If WORD is "oo", return | |
1623 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1624 | ||
1625 | char ** | |
53904c9e AC |
1626 | complete_on_enum (const char *enumlist[], |
1627 | char *text, | |
1628 | char *word) | |
c906108c SS |
1629 | { |
1630 | char **matchlist; | |
1631 | int sizeof_matchlist; | |
1632 | int matches; | |
1633 | int textlen = strlen (text); | |
1634 | int i; | |
53904c9e | 1635 | const char *name; |
c906108c SS |
1636 | |
1637 | sizeof_matchlist = 10; | |
1638 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1639 | matches = 0; | |
1640 | ||
1641 | for (i = 0; (name = enumlist[i]) != NULL; i++) | |
1642 | if (strncmp (name, text, textlen) == 0) | |
1643 | { | |
1644 | if (matches == sizeof_matchlist) | |
1645 | { | |
1646 | sizeof_matchlist *= 2; | |
c5aa993b | 1647 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1648 | (sizeof_matchlist |
1649 | * sizeof (char *))); | |
1650 | } | |
1651 | ||
c5aa993b | 1652 | matchlist[matches] = (char *) |
c906108c SS |
1653 | xmalloc (strlen (word) + strlen (name) + 1); |
1654 | if (word == text) | |
1655 | strcpy (matchlist[matches], name); | |
1656 | else if (word > text) | |
1657 | { | |
1658 | /* Return some portion of name. */ | |
1659 | strcpy (matchlist[matches], name + (word - text)); | |
1660 | } | |
1661 | else | |
1662 | { | |
1663 | /* Return some of text plus name. */ | |
1664 | strncpy (matchlist[matches], word, text - word); | |
1665 | matchlist[matches][text - word] = '\0'; | |
1666 | strcat (matchlist[matches], name); | |
1667 | } | |
1668 | ++matches; | |
1669 | } | |
1670 | ||
1671 | if (matches == 0) | |
1672 | { | |
b8c9b27d | 1673 | xfree (matchlist); |
c906108c SS |
1674 | matchlist = 0; |
1675 | } | |
1676 | else | |
1677 | { | |
c5aa993b JM |
1678 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1679 | * sizeof (char *))); | |
c906108c SS |
1680 | matchlist[matches] = (char *) 0; |
1681 | } | |
1682 | ||
1683 | return matchlist; | |
1684 | } | |
1685 | ||
f436dd25 MH |
1686 | |
1687 | /* check function pointer */ | |
1688 | int | |
1689 | cmd_func_p (struct cmd_list_element *cmd) | |
1690 | { | |
1691 | return (cmd->func != NULL); | |
1692 | } | |
1693 | ||
1694 | ||
1695 | /* call the command function */ | |
1696 | void | |
1697 | cmd_func (struct cmd_list_element *cmd, char *args, int from_tty) | |
1698 | { | |
1699 | if (cmd_func_p (cmd)) | |
1700 | (*cmd->func) (cmd, args, from_tty); | |
1701 | else | |
8a3fe4f8 | 1702 | error (_("Invalid command")); |
f436dd25 | 1703 | } |