Commit | Line | Data |
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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 | |
a14ed312 KB |
40 | static struct cmd_list_element *find_cmd (char *command, |
41 | int len, | |
42 | struct cmd_list_element *clist, | |
43 | int ignore_help_classes, | |
44 | int *nfound); | |
6837a0a2 | 45 | |
c85871a3 | 46 | static void help_all (struct ui_file *stream); |
6e381ba0 VP |
47 | |
48 | static void | |
49 | print_help_for_command (struct cmd_list_element *c, char *prefix, int recurse, | |
50 | struct ui_file *stream); | |
51 | ||
d318976c | 52 | \f |
9f60d481 AC |
53 | /* Set the callback function for the specified command. For each both |
54 | the commands callback and func() are set. The latter set to a | |
55 | bounce function (unless cfunc / sfunc is NULL that is). */ | |
56 | ||
57 | static void | |
58 | do_cfunc (struct cmd_list_element *c, char *args, int from_tty) | |
59 | { | |
60 | c->function.cfunc (args, from_tty); /* Ok. */ | |
61 | } | |
62 | ||
63 | void | |
9773a94b | 64 | set_cmd_cfunc (struct cmd_list_element *cmd, cmd_cfunc_ftype *cfunc) |
9f60d481 AC |
65 | { |
66 | if (cfunc == NULL) | |
67 | cmd->func = NULL; | |
68 | else | |
69 | cmd->func = do_cfunc; | |
70 | cmd->function.cfunc = cfunc; /* Ok. */ | |
71 | } | |
72 | ||
73 | static void | |
74 | do_sfunc (struct cmd_list_element *c, char *args, int from_tty) | |
75 | { | |
76 | c->function.sfunc (args, from_tty, c); /* Ok. */ | |
77 | } | |
78 | ||
79 | void | |
9773a94b | 80 | set_cmd_sfunc (struct cmd_list_element *cmd, cmd_sfunc_ftype *sfunc) |
9f60d481 AC |
81 | { |
82 | if (sfunc == NULL) | |
83 | cmd->func = NULL; | |
84 | else | |
85 | cmd->func = do_sfunc; | |
86 | cmd->function.sfunc = sfunc; /* Ok. */ | |
87 | } | |
88 | ||
bbaca940 AC |
89 | int |
90 | cmd_cfunc_eq (struct cmd_list_element *cmd, | |
91 | void (*cfunc) (char *args, int from_tty)) | |
92 | { | |
93 | return cmd->func == do_cfunc && cmd->function.cfunc == cfunc; | |
94 | } | |
95 | ||
7d0766f3 AC |
96 | void |
97 | set_cmd_context (struct cmd_list_element *cmd, void *context) | |
98 | { | |
99 | cmd->context = context; | |
100 | } | |
101 | ||
102 | void * | |
103 | get_cmd_context (struct cmd_list_element *cmd) | |
104 | { | |
105 | return cmd->context; | |
106 | } | |
107 | ||
700b53b1 TT |
108 | void |
109 | set_cmd_async_ok (struct cmd_list_element *cmd) | |
110 | { | |
111 | cmd->flags |= CMD_ASYNC_OK; | |
112 | } | |
113 | ||
114 | int | |
115 | get_cmd_async_ok (struct cmd_list_element *cmd) | |
116 | { | |
117 | return cmd->flags & CMD_ASYNC_OK; | |
118 | } | |
119 | ||
1868c04e AC |
120 | enum cmd_types |
121 | cmd_type (struct cmd_list_element *cmd) | |
122 | { | |
123 | return cmd->type; | |
124 | } | |
125 | ||
5ba2abeb AC |
126 | void |
127 | set_cmd_completer (struct cmd_list_element *cmd, | |
128 | char **(*completer) (char *text, char *word)) | |
129 | { | |
130 | cmd->completer = completer; /* Ok. */ | |
131 | } | |
132 | ||
9f60d481 | 133 | |
c906108c SS |
134 | /* Add element named NAME. |
135 | CLASS is the top level category into which commands are broken down | |
136 | for "help" purposes. | |
137 | FUN should be the function to execute the command; | |
138 | it will get a character string as argument, with leading | |
139 | and trailing blanks already eliminated. | |
140 | ||
141 | DOC is a documentation string for the command. | |
142 | Its first line should be a complete sentence. | |
143 | It should start with ? for a command that is an abbreviation | |
144 | or with * for a command that most users don't need to know about. | |
145 | ||
146 | Add this command to command list *LIST. | |
147 | ||
148 | Returns a pointer to the added command (not necessarily the head | |
149 | of *LIST). */ | |
150 | ||
151 | struct cmd_list_element * | |
af1c1752 KB |
152 | add_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
153 | char *doc, struct cmd_list_element **list) | |
c906108c | 154 | { |
d5b5ac79 | 155 | struct cmd_list_element *c |
c5aa993b | 156 | = (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); |
c906108c SS |
157 | struct cmd_list_element *p; |
158 | ||
159 | delete_cmd (name, list); | |
160 | ||
494b7ec9 | 161 | if (*list == NULL || strcmp ((*list)->name, name) >= 0) |
c906108c SS |
162 | { |
163 | c->next = *list; | |
164 | *list = c; | |
165 | } | |
166 | else | |
167 | { | |
168 | p = *list; | |
494b7ec9 | 169 | while (p->next && strcmp (p->next->name, name) <= 0) |
c5aa993b JM |
170 | { |
171 | p = p->next; | |
172 | } | |
c906108c SS |
173 | c->next = p->next; |
174 | p->next = c; | |
175 | } | |
176 | ||
177 | c->name = name; | |
178 | c->class = class; | |
9f60d481 | 179 | set_cmd_cfunc (c, fun); |
7d0766f3 | 180 | set_cmd_context (c, NULL); |
c906108c | 181 | c->doc = doc; |
56382845 FN |
182 | c->flags = 0; |
183 | c->replacement = NULL; | |
47724592 | 184 | c->pre_show_hook = NULL; |
73bc900d FN |
185 | c->hook_pre = NULL; |
186 | c->hook_post = NULL; | |
187 | c->hook_in = 0; | |
c906108c SS |
188 | c->prefixlist = NULL; |
189 | c->prefixname = NULL; | |
190 | c->allow_unknown = 0; | |
191 | c->abbrev_flag = 0; | |
5ba2abeb | 192 | set_cmd_completer (c, make_symbol_completion_list); |
c906108c SS |
193 | c->type = not_set_cmd; |
194 | c->var = NULL; | |
195 | c->var_type = var_boolean; | |
196 | c->enums = NULL; | |
197 | c->user_commands = NULL; | |
73bc900d FN |
198 | c->hookee_pre = NULL; |
199 | c->hookee_post = NULL; | |
c906108c SS |
200 | c->cmd_pointer = NULL; |
201 | ||
202 | return c; | |
203 | } | |
204 | ||
56382845 FN |
205 | /* Deprecates a command CMD. |
206 | REPLACEMENT is the name of the command which should be used in place | |
207 | of this command, or NULL if no such command exists. | |
208 | ||
209 | This function does not check to see if command REPLACEMENT exists | |
210 | since gdb may not have gotten around to adding REPLACEMENT when this | |
211 | function is called. | |
212 | ||
213 | Returns a pointer to the deprecated command. */ | |
214 | ||
215 | struct cmd_list_element * | |
fba45db2 | 216 | deprecate_cmd (struct cmd_list_element *cmd, char *replacement) |
56382845 FN |
217 | { |
218 | cmd->flags |= (CMD_DEPRECATED | DEPRECATED_WARN_USER); | |
219 | ||
220 | if (replacement != NULL) | |
221 | cmd->replacement = replacement; | |
222 | else | |
223 | cmd->replacement = NULL; | |
224 | ||
225 | return cmd; | |
226 | } | |
227 | ||
c906108c | 228 | struct cmd_list_element * |
fba45db2 KB |
229 | add_alias_cmd (char *name, char *oldname, enum command_class class, |
230 | int abbrev_flag, struct cmd_list_element **list) | |
c906108c SS |
231 | { |
232 | /* Must do this since lookup_cmd tries to side-effect its first arg */ | |
233 | char *copied_name; | |
d5b5ac79 AC |
234 | struct cmd_list_element *old; |
235 | struct cmd_list_element *c; | |
c906108c SS |
236 | copied_name = (char *) alloca (strlen (oldname) + 1); |
237 | strcpy (copied_name, oldname); | |
c5aa993b | 238 | old = lookup_cmd (&copied_name, *list, "", 1, 1); |
c906108c SS |
239 | |
240 | if (old == 0) | |
241 | { | |
242 | delete_cmd (name, list); | |
243 | return 0; | |
244 | } | |
245 | ||
9f60d481 AC |
246 | c = add_cmd (name, class, NULL, old->doc, list); |
247 | /* NOTE: Both FUNC and all the FUNCTIONs need to be copied. */ | |
248 | c->func = old->func; | |
249 | c->function = old->function; | |
c906108c SS |
250 | c->prefixlist = old->prefixlist; |
251 | c->prefixname = old->prefixname; | |
252 | c->allow_unknown = old->allow_unknown; | |
253 | c->abbrev_flag = abbrev_flag; | |
254 | c->cmd_pointer = old; | |
255 | return c; | |
256 | } | |
257 | ||
258 | /* Like add_cmd but adds an element for a command prefix: | |
259 | a name that should be followed by a subcommand to be looked up | |
260 | in another command list. PREFIXLIST should be the address | |
261 | of the variable containing that list. */ | |
262 | ||
263 | struct cmd_list_element * | |
af1c1752 KB |
264 | add_prefix_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
265 | char *doc, struct cmd_list_element **prefixlist, | |
266 | char *prefixname, int allow_unknown, | |
267 | struct cmd_list_element **list) | |
c906108c | 268 | { |
d5b5ac79 | 269 | struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); |
c906108c SS |
270 | c->prefixlist = prefixlist; |
271 | c->prefixname = prefixname; | |
272 | c->allow_unknown = allow_unknown; | |
273 | return c; | |
274 | } | |
275 | ||
276 | /* Like add_prefix_cmd but sets the abbrev_flag on the new command. */ | |
c5aa993b | 277 | |
c906108c | 278 | struct cmd_list_element * |
af1c1752 KB |
279 | add_abbrev_prefix_cmd (char *name, enum command_class class, |
280 | void (*fun) (char *, int), char *doc, | |
281 | struct cmd_list_element **prefixlist, char *prefixname, | |
282 | int allow_unknown, struct cmd_list_element **list) | |
c906108c | 283 | { |
d5b5ac79 | 284 | struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); |
c906108c SS |
285 | c->prefixlist = prefixlist; |
286 | c->prefixname = prefixname; | |
287 | c->allow_unknown = allow_unknown; | |
288 | c->abbrev_flag = 1; | |
289 | return c; | |
290 | } | |
291 | ||
292 | /* This is an empty "cfunc". */ | |
293 | void | |
fba45db2 | 294 | not_just_help_class_command (char *args, int from_tty) |
c906108c SS |
295 | { |
296 | } | |
297 | ||
298 | /* This is an empty "sfunc". */ | |
a14ed312 | 299 | static void empty_sfunc (char *, int, struct cmd_list_element *); |
c906108c SS |
300 | |
301 | static void | |
fba45db2 | 302 | empty_sfunc (char *args, int from_tty, struct cmd_list_element *c) |
c906108c SS |
303 | { |
304 | } | |
305 | ||
b2875cc0 | 306 | /* Add element named NAME to command list LIST (the list for set/show |
c906108c | 307 | or some sublist thereof). |
b2875cc0 | 308 | TYPE is set_cmd or show_cmd. |
c906108c SS |
309 | CLASS is as in add_cmd. |
310 | VAR_TYPE is the kind of thing we are setting. | |
311 | VAR is address of the variable being controlled by this command. | |
312 | DOC is the documentation string. */ | |
313 | ||
b2875cc0 AC |
314 | static struct cmd_list_element * |
315 | add_set_or_show_cmd (char *name, | |
316 | enum cmd_types type, | |
317 | enum command_class class, | |
318 | var_types var_type, | |
319 | void *var, | |
320 | char *doc, | |
321 | struct cmd_list_element **list) | |
c906108c | 322 | { |
e00d1dc8 | 323 | struct cmd_list_element *c = add_cmd (name, class, NULL, doc, list); |
b2875cc0 AC |
324 | gdb_assert (type == set_cmd || type == show_cmd); |
325 | c->type = type; | |
c906108c SS |
326 | c->var_type = var_type; |
327 | c->var = var; | |
e00d1dc8 | 328 | /* This needs to be something besides NULL so that this isn't |
c906108c | 329 | treated as a help class. */ |
9f60d481 | 330 | set_cmd_sfunc (c, empty_sfunc); |
c906108c SS |
331 | return c; |
332 | } | |
333 | ||
e707bbc2 AC |
334 | /* Add element named NAME to both the command SET_LIST and SHOW_LIST. |
335 | CLASS is as in add_cmd. VAR_TYPE is the kind of thing we are | |
336 | setting. VAR is address of the variable being controlled by this | |
337 | command. SET_FUNC and SHOW_FUNC are the callback functions (if | |
3b64bf98 AC |
338 | non-NULL). SET_DOC, SHOW_DOC and HELP_DOC are the documentation |
339 | strings. PRINT the format string to print the value. SET_RESULT | |
340 | and SHOW_RESULT, if not NULL, are set to the resulting command | |
341 | structures. */ | |
e707bbc2 | 342 | |
b3f42336 | 343 | static void |
9f064c95 TT |
344 | add_setshow_cmd_full (char *name, |
345 | enum command_class class, | |
346 | var_types var_type, void *var, | |
3b64bf98 | 347 | const char *set_doc, const char *show_doc, |
335cca0d | 348 | const char *help_doc, |
3b64bf98 | 349 | cmd_sfunc_ftype *set_func, |
08546159 | 350 | show_value_ftype *show_func, |
9f064c95 TT |
351 | struct cmd_list_element **set_list, |
352 | struct cmd_list_element **show_list, | |
353 | struct cmd_list_element **set_result, | |
354 | struct cmd_list_element **show_result) | |
e707bbc2 AC |
355 | { |
356 | struct cmd_list_element *set; | |
357 | struct cmd_list_element *show; | |
be7d7357 AC |
358 | char *full_set_doc; |
359 | char *full_show_doc; | |
360 | ||
361 | if (help_doc != NULL) | |
362 | { | |
363 | full_set_doc = xstrprintf ("%s\n%s", set_doc, help_doc); | |
364 | full_show_doc = xstrprintf ("%s\n%s", show_doc, help_doc); | |
365 | } | |
366 | else | |
367 | { | |
368 | full_set_doc = xstrdup (set_doc); | |
369 | full_show_doc = xstrdup (show_doc); | |
370 | } | |
e707bbc2 | 371 | set = add_set_or_show_cmd (name, set_cmd, class, var_type, var, |
3b64bf98 | 372 | full_set_doc, set_list); |
e707bbc2 AC |
373 | if (set_func != NULL) |
374 | set_cmd_sfunc (set, set_func); | |
375 | show = add_set_or_show_cmd (name, show_cmd, class, var_type, var, | |
3b64bf98 | 376 | full_show_doc, show_list); |
08546159 | 377 | show->show_value_func = show_func; |
9f064c95 TT |
378 | |
379 | if (set_result != NULL) | |
380 | *set_result = set; | |
381 | if (show_result != NULL) | |
382 | *show_result = show; | |
383 | } | |
384 | ||
b2875cc0 | 385 | struct cmd_list_element * |
b66df561 AC |
386 | deprecated_add_set_cmd (char *name, |
387 | enum command_class class, | |
388 | var_types var_type, | |
389 | void *var, | |
390 | char *doc, | |
391 | struct cmd_list_element **list) | |
b2875cc0 AC |
392 | { |
393 | return add_set_or_show_cmd (name, set_cmd, class, var_type, var, doc, list); | |
394 | } | |
395 | ||
1b295c3d AC |
396 | /* Add element named NAME to command list LIST (the list for set or |
397 | some sublist thereof). CLASS is as in add_cmd. ENUMLIST is a list | |
398 | of strings which may follow NAME. VAR is address of the variable | |
399 | which will contain the matching string (from ENUMLIST). */ | |
400 | ||
401 | void | |
402 | add_setshow_enum_cmd (char *name, | |
403 | enum command_class class, | |
404 | const char *enumlist[], | |
405 | const char **var, | |
406 | const char *set_doc, | |
407 | const char *show_doc, | |
408 | const char *help_doc, | |
1b295c3d | 409 | cmd_sfunc_ftype *set_func, |
08546159 | 410 | show_value_ftype *show_func, |
1b295c3d | 411 | struct cmd_list_element **set_list, |
7376b4c2 | 412 | struct cmd_list_element **show_list) |
1b295c3d AC |
413 | { |
414 | struct cmd_list_element *c; | |
415 | add_setshow_cmd_full (name, class, var_enum, var, | |
335cca0d | 416 | set_doc, show_doc, help_doc, |
1b295c3d AC |
417 | set_func, show_func, |
418 | set_list, show_list, | |
7376b4c2 | 419 | &c, NULL); |
1b295c3d AC |
420 | c->enums = enumlist; |
421 | } | |
422 | ||
e9e68a56 AC |
423 | /* Add an auto-boolean command named NAME to both the set and show |
424 | command list lists. CLASS is as in add_cmd. VAR is address of the | |
425 | variable which will contain the value. DOC is the documentation | |
426 | string. FUNC is the corresponding callback. */ | |
427 | void | |
428 | add_setshow_auto_boolean_cmd (char *name, | |
429 | enum command_class class, | |
430 | enum auto_boolean *var, | |
3b64bf98 | 431 | const char *set_doc, const char *show_doc, |
335cca0d | 432 | const char *help_doc, |
e9e68a56 | 433 | cmd_sfunc_ftype *set_func, |
08546159 | 434 | show_value_ftype *show_func, |
e9e68a56 AC |
435 | struct cmd_list_element **set_list, |
436 | struct cmd_list_element **show_list) | |
97c3646f AC |
437 | { |
438 | static const char *auto_boolean_enums[] = { "on", "off", "auto", NULL }; | |
439 | struct cmd_list_element *c; | |
9f064c95 | 440 | add_setshow_cmd_full (name, class, var_auto_boolean, var, |
2c5b56ce | 441 | set_doc, show_doc, help_doc, |
3b64bf98 | 442 | set_func, show_func, |
9f064c95 TT |
443 | set_list, show_list, |
444 | &c, NULL); | |
97c3646f | 445 | c->enums = auto_boolean_enums; |
97c3646f AC |
446 | } |
447 | ||
e707bbc2 AC |
448 | /* Add element named NAME to both the set and show command LISTs (the |
449 | list for set/show or some sublist thereof). CLASS is as in | |
450 | add_cmd. VAR is address of the variable which will contain the | |
ba3e8e46 | 451 | value. SET_DOC and SHOW_DOC are the documentation strings. */ |
e707bbc2 | 452 | void |
3b64bf98 AC |
453 | add_setshow_boolean_cmd (char *name, enum command_class class, int *var, |
454 | const char *set_doc, const char *show_doc, | |
335cca0d | 455 | const char *help_doc, |
e707bbc2 | 456 | cmd_sfunc_ftype *set_func, |
08546159 | 457 | show_value_ftype *show_func, |
e707bbc2 AC |
458 | struct cmd_list_element **set_list, |
459 | struct cmd_list_element **show_list) | |
f3796e26 AC |
460 | { |
461 | static const char *boolean_enums[] = { "on", "off", NULL }; | |
462 | struct cmd_list_element *c; | |
9f064c95 | 463 | add_setshow_cmd_full (name, class, var_boolean, var, |
2c5b56ce | 464 | set_doc, show_doc, help_doc, |
9f064c95 TT |
465 | set_func, show_func, |
466 | set_list, show_list, | |
467 | &c, NULL); | |
f3796e26 | 468 | c->enums = boolean_enums; |
f3796e26 AC |
469 | } |
470 | ||
b3f42336 AC |
471 | /* Add element named NAME to both the set and show command LISTs (the |
472 | list for set/show or some sublist thereof). */ | |
473 | void | |
474 | add_setshow_filename_cmd (char *name, enum command_class class, | |
475 | char **var, | |
476 | const char *set_doc, const char *show_doc, | |
335cca0d | 477 | const char *help_doc, |
b3f42336 | 478 | cmd_sfunc_ftype *set_func, |
08546159 | 479 | show_value_ftype *show_func, |
b3f42336 AC |
480 | struct cmd_list_element **set_list, |
481 | struct cmd_list_element **show_list) | |
482 | { | |
f397e303 | 483 | struct cmd_list_element *set_result; |
b3f42336 | 484 | add_setshow_cmd_full (name, class, var_filename, var, |
2c5b56ce | 485 | set_doc, show_doc, help_doc, |
b3f42336 AC |
486 | set_func, show_func, |
487 | set_list, show_list, | |
f397e303 AC |
488 | &set_result, NULL); |
489 | set_cmd_completer (set_result, filename_completer); | |
b3f42336 AC |
490 | } |
491 | ||
492 | /* Add element named NAME to both the set and show command LISTs (the | |
493 | list for set/show or some sublist thereof). */ | |
494 | void | |
495 | add_setshow_string_cmd (char *name, enum command_class class, | |
6df3bc68 MS |
496 | char **var, |
497 | const char *set_doc, const char *show_doc, | |
498 | const char *help_doc, | |
499 | cmd_sfunc_ftype *set_func, | |
500 | show_value_ftype *show_func, | |
501 | struct cmd_list_element **set_list, | |
502 | struct cmd_list_element **show_list) | |
b3f42336 AC |
503 | { |
504 | add_setshow_cmd_full (name, class, var_string, var, | |
2c5b56ce | 505 | set_doc, show_doc, help_doc, |
b3f42336 AC |
506 | set_func, show_func, |
507 | set_list, show_list, | |
508 | NULL, NULL); | |
509 | } | |
510 | ||
26c41df3 AC |
511 | /* Add element named NAME to both the set and show command LISTs (the |
512 | list for set/show or some sublist thereof). */ | |
513 | void | |
514 | add_setshow_string_noescape_cmd (char *name, enum command_class class, | |
515 | char **var, | |
516 | const char *set_doc, const char *show_doc, | |
517 | const char *help_doc, | |
518 | cmd_sfunc_ftype *set_func, | |
519 | show_value_ftype *show_func, | |
520 | struct cmd_list_element **set_list, | |
521 | struct cmd_list_element **show_list) | |
522 | { | |
523 | add_setshow_cmd_full (name, class, var_string_noescape, var, | |
524 | set_doc, show_doc, help_doc, | |
525 | set_func, show_func, | |
526 | set_list, show_list, | |
527 | NULL, NULL); | |
528 | } | |
529 | ||
b4b4ac0b AC |
530 | /* Add element named NAME to both the set and show command LISTs (the |
531 | list for set/show or some sublist thereof). */ | |
532 | void | |
533 | add_setshow_optional_filename_cmd (char *name, enum command_class class, | |
534 | char **var, | |
535 | const char *set_doc, const char *show_doc, | |
536 | const char *help_doc, | |
537 | cmd_sfunc_ftype *set_func, | |
538 | show_value_ftype *show_func, | |
539 | struct cmd_list_element **set_list, | |
540 | struct cmd_list_element **show_list) | |
541 | { | |
542 | add_setshow_cmd_full (name, class, var_optional_filename, var, | |
543 | set_doc, show_doc, help_doc, | |
544 | set_func, show_func, | |
545 | set_list, show_list, | |
546 | NULL, NULL); | |
547 | } | |
548 | ||
c0d88b1b AC |
549 | /* Add element named NAME to both the set and show command LISTs (the |
550 | list for set/show or some sublist thereof). CLASS is as in | |
551 | add_cmd. VAR is address of the variable which will contain the | |
552 | value. SET_DOC and SHOW_DOC are the documentation strings. */ | |
553 | void | |
554 | add_setshow_integer_cmd (char *name, enum command_class class, | |
47b667de | 555 | int *var, |
6df3bc68 MS |
556 | const char *set_doc, const char *show_doc, |
557 | const char *help_doc, | |
558 | cmd_sfunc_ftype *set_func, | |
559 | show_value_ftype *show_func, | |
560 | struct cmd_list_element **set_list, | |
561 | struct cmd_list_element **show_list) | |
c0d88b1b AC |
562 | { |
563 | add_setshow_cmd_full (name, class, var_integer, var, | |
564 | set_doc, show_doc, help_doc, | |
565 | set_func, show_func, | |
566 | set_list, show_list, | |
567 | NULL, NULL); | |
568 | } | |
569 | ||
25d29d70 AC |
570 | /* Add element named NAME to both the set and show command LISTs (the |
571 | list for set/show or some sublist thereof). CLASS is as in | |
572 | add_cmd. VAR is address of the variable which will contain the | |
ba3e8e46 | 573 | value. SET_DOC and SHOW_DOC are the documentation strings. */ |
25d29d70 | 574 | void |
3b64bf98 AC |
575 | add_setshow_uinteger_cmd (char *name, enum command_class class, |
576 | unsigned int *var, | |
577 | const char *set_doc, const char *show_doc, | |
335cca0d | 578 | const char *help_doc, |
25d29d70 | 579 | cmd_sfunc_ftype *set_func, |
08546159 | 580 | show_value_ftype *show_func, |
25d29d70 AC |
581 | struct cmd_list_element **set_list, |
582 | struct cmd_list_element **show_list) | |
583 | { | |
584 | add_setshow_cmd_full (name, class, var_uinteger, var, | |
2c5b56ce | 585 | set_doc, show_doc, help_doc, |
25d29d70 AC |
586 | set_func, show_func, |
587 | set_list, show_list, | |
588 | NULL, NULL); | |
589 | } | |
590 | ||
15170568 AC |
591 | /* Add element named NAME to both the set and show command LISTs (the |
592 | list for set/show or some sublist thereof). CLASS is as in | |
593 | add_cmd. VAR is address of the variable which will contain the | |
ba3e8e46 | 594 | value. SET_DOC and SHOW_DOC are the documentation strings. */ |
15170568 | 595 | void |
3b64bf98 AC |
596 | add_setshow_zinteger_cmd (char *name, enum command_class class, |
597 | int *var, | |
598 | const char *set_doc, const char *show_doc, | |
335cca0d | 599 | const char *help_doc, |
15170568 | 600 | cmd_sfunc_ftype *set_func, |
08546159 | 601 | show_value_ftype *show_func, |
15170568 AC |
602 | struct cmd_list_element **set_list, |
603 | struct cmd_list_element **show_list) | |
604 | { | |
605 | add_setshow_cmd_full (name, class, var_zinteger, var, | |
2c5b56ce | 606 | set_doc, show_doc, help_doc, |
15170568 AC |
607 | set_func, show_func, |
608 | set_list, show_list, | |
609 | NULL, NULL); | |
610 | } | |
611 | ||
c906108c SS |
612 | /* Remove the command named NAME from the command list. */ |
613 | ||
614 | void | |
fba45db2 | 615 | delete_cmd (char *name, struct cmd_list_element **list) |
c906108c | 616 | { |
d5b5ac79 | 617 | struct cmd_list_element *c; |
c906108c SS |
618 | struct cmd_list_element *p; |
619 | ||
6314a349 | 620 | while (*list && strcmp ((*list)->name, name) == 0) |
c906108c | 621 | { |
73bc900d FN |
622 | if ((*list)->hookee_pre) |
623 | (*list)->hookee_pre->hook_pre = 0; /* Hook slips out of its mouth */ | |
624 | if ((*list)->hookee_post) | |
625 | (*list)->hookee_post->hook_post = 0; /* Hook slips out of its bottom */ | |
c906108c | 626 | p = (*list)->next; |
b8c9b27d | 627 | xfree (* list); |
c906108c SS |
628 | *list = p; |
629 | } | |
630 | ||
631 | if (*list) | |
632 | for (c = *list; c->next;) | |
633 | { | |
6314a349 | 634 | if (strcmp (c->next->name, name) == 0) |
c906108c | 635 | { |
73bc900d FN |
636 | if (c->next->hookee_pre) |
637 | c->next->hookee_pre->hook_pre = 0; /* hooked cmd gets away. */ | |
638 | if (c->next->hookee_post) | |
639 | c->next->hookee_post->hook_post = 0; /* remove post hook */ | |
640 | /* :( no fishing metaphore */ | |
c906108c | 641 | p = c->next->next; |
b8c9b27d | 642 | xfree (c->next); |
c906108c SS |
643 | c->next = p; |
644 | } | |
645 | else | |
646 | c = c->next; | |
647 | } | |
648 | } | |
d318976c FN |
649 | \f |
650 | /* Shorthands to the commands above. */ | |
651 | ||
652 | /* Add an element to the list of info subcommands. */ | |
653 | ||
654 | struct cmd_list_element * | |
655 | add_info (char *name, void (*fun) (char *, int), char *doc) | |
656 | { | |
657 | return add_cmd (name, no_class, fun, doc, &infolist); | |
658 | } | |
659 | ||
660 | /* Add an alias to the list of info subcommands. */ | |
661 | ||
662 | struct cmd_list_element * | |
663 | add_info_alias (char *name, char *oldname, int abbrev_flag) | |
664 | { | |
665 | return add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
666 | } | |
667 | ||
668 | /* Add an element to the list of commands. */ | |
669 | ||
670 | struct cmd_list_element * | |
671 | add_com (char *name, enum command_class class, void (*fun) (char *, int), | |
672 | char *doc) | |
673 | { | |
674 | return add_cmd (name, class, fun, doc, &cmdlist); | |
675 | } | |
676 | ||
677 | /* Add an alias or abbreviation command to the list of commands. */ | |
678 | ||
679 | struct cmd_list_element * | |
680 | add_com_alias (char *name, char *oldname, enum command_class class, | |
681 | int abbrev_flag) | |
682 | { | |
683 | return add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
684 | } | |
685 | \f | |
6837a0a2 DB |
686 | /* Recursively walk the commandlist structures, and print out the |
687 | documentation of commands that match our regex in either their | |
688 | name, or their documentation. | |
689 | */ | |
d318976c FN |
690 | void |
691 | apropos_cmd (struct ui_file *stream, struct cmd_list_element *commandlist, | |
6837a0a2 DB |
692 | struct re_pattern_buffer *regex, char *prefix) |
693 | { | |
d5b5ac79 | 694 | struct cmd_list_element *c; |
6837a0a2 DB |
695 | int returnvalue=1; /*Needed to avoid double printing*/ |
696 | /* Walk through the commands */ | |
697 | for (c=commandlist;c;c=c->next) | |
698 | { | |
699 | if (c->name != NULL) | |
700 | { | |
701 | /* Try to match against the name*/ | |
702 | returnvalue=re_search(regex,c->name,strlen(c->name),0,strlen(c->name),NULL); | |
703 | if (returnvalue >= 0) | |
704 | { | |
6e381ba0 VP |
705 | print_help_for_command (c, prefix, |
706 | 0 /* don't recurse */, stream); | |
6837a0a2 DB |
707 | } |
708 | } | |
709 | if (c->doc != NULL && returnvalue != 0) | |
710 | { | |
711 | /* Try to match against documentation */ | |
712 | if (re_search(regex,c->doc,strlen(c->doc),0,strlen(c->doc),NULL) >=0) | |
713 | { | |
6e381ba0 VP |
714 | print_help_for_command (c, prefix, |
715 | 0 /* don't recurse */, stream); | |
6837a0a2 DB |
716 | } |
717 | } | |
718 | /* Check if this command has subcommands */ | |
719 | if (c->prefixlist != NULL) | |
720 | { | |
721 | /* Recursively call ourselves on the subcommand list, | |
722 | passing the right prefix in. | |
723 | */ | |
d318976c | 724 | apropos_cmd (stream,*c->prefixlist,regex,c->prefixname); |
6837a0a2 DB |
725 | } |
726 | } | |
727 | } | |
c906108c SS |
728 | |
729 | /* This command really has to deal with two things: | |
730 | * 1) I want documentation on *this string* (usually called by | |
731 | * "help commandname"). | |
732 | * 2) I want documentation on *this list* (usually called by | |
733 | * giving a command that requires subcommands. Also called by saying | |
734 | * just "help".) | |
735 | * | |
736 | * I am going to split this into two seperate comamnds, help_cmd and | |
737 | * help_list. | |
738 | */ | |
739 | ||
740 | void | |
fba45db2 | 741 | help_cmd (char *command, struct ui_file *stream) |
c906108c SS |
742 | { |
743 | struct cmd_list_element *c; | |
744 | extern struct cmd_list_element *cmdlist; | |
745 | ||
746 | if (!command) | |
747 | { | |
748 | help_list (cmdlist, "", all_classes, stream); | |
749 | return; | |
750 | } | |
751 | ||
49a5a3a3 GM |
752 | if (strcmp (command, "all") == 0) |
753 | { | |
754 | help_all (stream); | |
755 | return; | |
756 | } | |
757 | ||
c906108c SS |
758 | c = lookup_cmd (&command, cmdlist, "", 0, 0); |
759 | ||
760 | if (c == 0) | |
761 | return; | |
762 | ||
763 | /* There are three cases here. | |
764 | If c->prefixlist is nonzero, we have a prefix command. | |
765 | Print its documentation, then list its subcommands. | |
c5aa993b | 766 | |
9f60d481 AC |
767 | If c->func is non NULL, we really have a command. Print its |
768 | documentation and return. | |
c5aa993b | 769 | |
9f60d481 AC |
770 | If c->func is NULL, we have a class name. Print its |
771 | documentation (as if it were a command) and then set class to the | |
772 | number of this class so that the commands in the class will be | |
773 | listed. */ | |
c906108c SS |
774 | |
775 | fputs_filtered (c->doc, stream); | |
776 | fputs_filtered ("\n", stream); | |
777 | ||
9f60d481 | 778 | if (c->prefixlist == 0 && c->func != NULL) |
c906108c SS |
779 | return; |
780 | fprintf_filtered (stream, "\n"); | |
781 | ||
782 | /* If this is a prefix command, print it's subcommands */ | |
783 | if (c->prefixlist) | |
784 | help_list (*c->prefixlist, c->prefixname, all_commands, stream); | |
785 | ||
786 | /* If this is a class name, print all of the commands in the class */ | |
9f60d481 | 787 | if (c->func == NULL) |
c906108c SS |
788 | help_list (cmdlist, "", c->class, stream); |
789 | ||
73bc900d FN |
790 | if (c->hook_pre || c->hook_post) |
791 | fprintf_filtered (stream, | |
792 | "\nThis command has a hook (or hooks) defined:\n"); | |
793 | ||
794 | if (c->hook_pre) | |
795 | fprintf_filtered (stream, | |
796 | "\tThis command is run after : %s (pre hook)\n", | |
797 | c->hook_pre->name); | |
798 | if (c->hook_post) | |
799 | fprintf_filtered (stream, | |
800 | "\tThis command is run before : %s (post hook)\n", | |
801 | c->hook_post->name); | |
c906108c SS |
802 | } |
803 | ||
804 | /* | |
805 | * Get a specific kind of help on a command list. | |
806 | * | |
807 | * LIST is the list. | |
808 | * CMDTYPE is the prefix to use in the title string. | |
809 | * CLASS is the class with which to list the nodes of this list (see | |
810 | * documentation for help_cmd_list below), As usual, ALL_COMMANDS for | |
811 | * everything, ALL_CLASSES for just classes, and non-negative for only things | |
812 | * in a specific class. | |
813 | * and STREAM is the output stream on which to print things. | |
814 | * If you call this routine with a class >= 0, it recurses. | |
815 | */ | |
816 | void | |
fba45db2 KB |
817 | help_list (struct cmd_list_element *list, char *cmdtype, |
818 | enum command_class class, struct ui_file *stream) | |
c906108c SS |
819 | { |
820 | int len; | |
821 | char *cmdtype1, *cmdtype2; | |
c5aa993b | 822 | |
c906108c SS |
823 | /* If CMDTYPE is "foo ", CMDTYPE1 gets " foo" and CMDTYPE2 gets "foo sub" */ |
824 | len = strlen (cmdtype); | |
825 | cmdtype1 = (char *) alloca (len + 1); | |
826 | cmdtype1[0] = 0; | |
827 | cmdtype2 = (char *) alloca (len + 4); | |
828 | cmdtype2[0] = 0; | |
829 | if (len) | |
830 | { | |
831 | cmdtype1[0] = ' '; | |
832 | strncpy (cmdtype1 + 1, cmdtype, len - 1); | |
833 | cmdtype1[len] = 0; | |
834 | strncpy (cmdtype2, cmdtype, len - 1); | |
835 | strcpy (cmdtype2 + len - 1, " sub"); | |
836 | } | |
837 | ||
838 | if (class == all_classes) | |
839 | fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2); | |
840 | else | |
841 | fprintf_filtered (stream, "List of %scommands:\n\n", cmdtype2); | |
842 | ||
c5aa993b | 843 | help_cmd_list (list, class, cmdtype, (int) class >= 0, stream); |
c906108c SS |
844 | |
845 | if (class == all_classes) | |
de74f71f MS |
846 | { |
847 | fprintf_filtered (stream, "\n\ | |
848 | Type \"help%s\" followed by a class name for a list of commands in ", | |
849 | cmdtype1); | |
850 | wrap_here (""); | |
851 | fprintf_filtered (stream, "that class."); | |
6e381ba0 VP |
852 | |
853 | fprintf_filtered (stream, "\n\ | |
854 | Type \"help all\" for the list of all commands."); | |
de74f71f | 855 | } |
c906108c | 856 | |
de74f71f | 857 | fprintf_filtered (stream, "\nType \"help%s\" followed by %scommand name ", |
c5aa993b | 858 | cmdtype1, cmdtype2); |
de74f71f MS |
859 | wrap_here (""); |
860 | fputs_filtered ("for ", stream); | |
861 | wrap_here (""); | |
862 | fputs_filtered ("full ", stream); | |
863 | wrap_here (""); | |
864 | fputs_filtered ("documentation.\n", stream); | |
6e381ba0 VP |
865 | fputs_filtered ("Type \"apropos word\" to search " |
866 | "for commands related to \"word\".\n", stream); | |
de74f71f MS |
867 | fputs_filtered ("Command name abbreviations are allowed if unambiguous.\n", |
868 | stream); | |
c906108c | 869 | } |
c5aa993b | 870 | |
49a5a3a3 | 871 | static void |
c85871a3 | 872 | help_all (struct ui_file *stream) |
49a5a3a3 GM |
873 | { |
874 | struct cmd_list_element *c; | |
875 | extern struct cmd_list_element *cmdlist; | |
6e381ba0 | 876 | int seen_unclassified = 0; |
49a5a3a3 GM |
877 | |
878 | for (c = cmdlist; c; c = c->next) | |
879 | { | |
880 | if (c->abbrev_flag) | |
881 | continue; | |
49a5a3a3 | 882 | /* If this is a class name, print all of the commands in the class */ |
6e381ba0 VP |
883 | |
884 | if (c->func == NULL) | |
885 | { | |
886 | fprintf_filtered (stream, "\nCommand class: %s\n\n", c->name); | |
887 | help_cmd_list (cmdlist, c->class, "", 1, stream); | |
888 | } | |
49a5a3a3 | 889 | } |
6e381ba0 VP |
890 | |
891 | /* While it's expected that all commands are in some class, | |
892 | as a safety measure, we'll print commands outside of any | |
893 | class at the end. */ | |
894 | ||
895 | for (c = cmdlist; c; c = c->next) | |
896 | { | |
897 | if (c->abbrev_flag) | |
898 | continue; | |
899 | ||
900 | if (c->class == no_class) | |
901 | { | |
902 | if (!seen_unclassified) | |
903 | { | |
904 | fprintf_filtered (stream, "\nUnclassified commands\n\n"); | |
905 | seen_unclassified = 1; | |
906 | } | |
907 | print_help_for_command (c, "", 1, stream); | |
908 | } | |
909 | } | |
910 | ||
49a5a3a3 GM |
911 | } |
912 | ||
c906108c | 913 | /* Print only the first line of STR on STREAM. */ |
d318976c | 914 | void |
fba45db2 | 915 | print_doc_line (struct ui_file *stream, char *str) |
c906108c SS |
916 | { |
917 | static char *line_buffer = 0; | |
918 | static int line_size; | |
d5b5ac79 | 919 | char *p; |
c906108c SS |
920 | |
921 | if (!line_buffer) | |
922 | { | |
923 | line_size = 80; | |
924 | line_buffer = (char *) xmalloc (line_size); | |
925 | } | |
926 | ||
927 | p = str; | |
928 | while (*p && *p != '\n' && *p != '.' && *p != ',') | |
929 | p++; | |
930 | if (p - str > line_size - 1) | |
931 | { | |
932 | line_size = p - str + 1; | |
b8c9b27d | 933 | xfree (line_buffer); |
c906108c SS |
934 | line_buffer = (char *) xmalloc (line_size); |
935 | } | |
936 | strncpy (line_buffer, str, p - str); | |
937 | line_buffer[p - str] = '\0'; | |
938 | if (islower (line_buffer[0])) | |
939 | line_buffer[0] = toupper (line_buffer[0]); | |
8b93c638 | 940 | ui_out_text (uiout, line_buffer); |
c906108c SS |
941 | } |
942 | ||
6e381ba0 VP |
943 | /* Print one-line help for command C. |
944 | If RECURSE is non-zero, also print one-line descriptions | |
945 | of all prefixed subcommands. */ | |
946 | static void | |
947 | print_help_for_command (struct cmd_list_element *c, char *prefix, int recurse, | |
948 | struct ui_file *stream) | |
949 | { | |
950 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
951 | print_doc_line (stream, c->doc); | |
952 | fputs_filtered ("\n", stream); | |
953 | ||
954 | if (recurse | |
955 | && c->prefixlist != 0 | |
956 | && c->abbrev_flag == 0) | |
957 | /* Subcommands of a prefix command typically have 'all_commands' | |
958 | as class. If we pass CLASS to recursive invocation, | |
959 | most often we won't see anything. */ | |
960 | help_cmd_list (*c->prefixlist, all_commands, c->prefixname, 1, stream); | |
961 | } | |
962 | ||
c906108c SS |
963 | /* |
964 | * Implement a help command on command list LIST. | |
965 | * RECURSE should be non-zero if this should be done recursively on | |
966 | * all sublists of LIST. | |
967 | * PREFIX is the prefix to print before each command name. | |
968 | * STREAM is the stream upon which the output should be written. | |
969 | * CLASS should be: | |
c5aa993b | 970 | * A non-negative class number to list only commands in that |
c906108c | 971 | * class. |
c5aa993b JM |
972 | * ALL_COMMANDS to list all commands in list. |
973 | * ALL_CLASSES to list all classes in list. | |
c906108c SS |
974 | * |
975 | * Note that RECURSE will be active on *all* sublists, not just the | |
976 | * ones selected by the criteria above (ie. the selection mechanism | |
977 | * is at the low level, not the high-level). | |
978 | */ | |
979 | void | |
fba45db2 KB |
980 | help_cmd_list (struct cmd_list_element *list, enum command_class class, |
981 | char *prefix, int recurse, struct ui_file *stream) | |
c906108c | 982 | { |
d5b5ac79 | 983 | struct cmd_list_element *c; |
c906108c SS |
984 | |
985 | for (c = list; c; c = c->next) | |
6e381ba0 | 986 | { |
c906108c SS |
987 | if (c->abbrev_flag == 0 && |
988 | (class == all_commands | |
9f60d481 AC |
989 | || (class == all_classes && c->func == NULL) |
990 | || (class == c->class && c->func != NULL))) | |
c906108c | 991 | { |
6e381ba0 | 992 | print_help_for_command (c, prefix, recurse, stream); |
c906108c | 993 | } |
c906108c SS |
994 | } |
995 | } | |
c906108c | 996 | \f |
c5aa993b | 997 | |
c906108c SS |
998 | /* Search the input clist for 'command'. Return the command if |
999 | found (or NULL if not), and return the number of commands | |
1000 | found in nfound */ | |
1001 | ||
1002 | static struct cmd_list_element * | |
fba45db2 KB |
1003 | find_cmd (char *command, int len, struct cmd_list_element *clist, |
1004 | int ignore_help_classes, int *nfound) | |
c906108c SS |
1005 | { |
1006 | struct cmd_list_element *found, *c; | |
1007 | ||
c5aa993b | 1008 | found = (struct cmd_list_element *) NULL; |
c906108c SS |
1009 | *nfound = 0; |
1010 | for (c = clist; c; c = c->next) | |
1011 | if (!strncmp (command, c->name, len) | |
9f60d481 | 1012 | && (!ignore_help_classes || c->func)) |
c906108c | 1013 | { |
c5aa993b JM |
1014 | found = c; |
1015 | (*nfound)++; | |
1016 | if (c->name[len] == '\0') | |
1017 | { | |
1018 | *nfound = 1; | |
1019 | break; | |
1020 | } | |
c906108c SS |
1021 | } |
1022 | return found; | |
1023 | } | |
1024 | ||
3386243e AS |
1025 | static int |
1026 | find_command_name_length (const char *text) | |
1027 | { | |
1028 | const char *p = text; | |
1029 | ||
1030 | /* Treating underscores as part of command words is important | |
1031 | so that "set args_foo()" doesn't get interpreted as | |
1032 | "set args _foo()". */ | |
1033 | /* Some characters are only used for TUI specific commands. However, they | |
1034 | are always allowed for the sake of consistency. | |
1035 | The XDB compatibility characters are only allowed when using the right | |
1036 | mode because they clash with other GDB commands - specifically '/' is | |
1037 | used as a suffix for print, examine and display. | |
1038 | Note that this is larger than the character set allowed when creating | |
1039 | user-defined commands. */ | |
1040 | while (isalnum (*p) || *p == '-' || *p == '_' || | |
1041 | /* Characters used by TUI specific commands. */ | |
1042 | *p == '+' || *p == '<' || *p == '>' || *p == '$' || | |
1043 | /* Characters used for XDB compatibility. */ | |
1044 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))) | |
1045 | p++; | |
1046 | ||
1047 | return p - text; | |
1048 | } | |
1049 | ||
c906108c SS |
1050 | /* This routine takes a line of TEXT and a CLIST in which to start the |
1051 | lookup. When it returns it will have incremented the text pointer past | |
1052 | the section of text it matched, set *RESULT_LIST to point to the list in | |
1053 | which the last word was matched, and will return a pointer to the cmd | |
1054 | list element which the text matches. It will return NULL if no match at | |
1055 | all was possible. It will return -1 (cast appropriately, ick) if ambigous | |
1056 | matches are possible; in this case *RESULT_LIST will be set to point to | |
1057 | the list in which there are ambiguous choices (and *TEXT will be set to | |
1058 | the ambiguous text string). | |
1059 | ||
1060 | If the located command was an abbreviation, this routine returns the base | |
1061 | command of the abbreviation. | |
1062 | ||
1063 | It does no error reporting whatsoever; control will always return | |
1064 | to the superior routine. | |
1065 | ||
1066 | In the case of an ambiguous return (-1), *RESULT_LIST will be set to point | |
1067 | at the prefix_command (ie. the best match) *or* (special case) will be NULL | |
1068 | if no prefix command was ever found. For example, in the case of "info a", | |
1069 | "info" matches without ambiguity, but "a" could be "args" or "address", so | |
1070 | *RESULT_LIST is set to the cmd_list_element for "info". So in this case | |
1071 | RESULT_LIST should not be interpeted as a pointer to the beginning of a | |
1072 | list; it simply points to a specific command. In the case of an ambiguous | |
1073 | return *TEXT is advanced past the last non-ambiguous prefix (e.g. | |
1074 | "info t" can be "info types" or "info target"; upon return *TEXT has been | |
1075 | advanced past "info "). | |
1076 | ||
1077 | If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise | |
1078 | affect the operation). | |
1079 | ||
1080 | This routine does *not* modify the text pointed to by TEXT. | |
c5aa993b | 1081 | |
c906108c SS |
1082 | If IGNORE_HELP_CLASSES is nonzero, ignore any command list elements which |
1083 | are actually help classes rather than commands (i.e. the function field of | |
1084 | the struct cmd_list_element is NULL). */ | |
1085 | ||
1086 | struct cmd_list_element * | |
fba45db2 KB |
1087 | lookup_cmd_1 (char **text, struct cmd_list_element *clist, |
1088 | struct cmd_list_element **result_list, int ignore_help_classes) | |
c906108c | 1089 | { |
3386243e | 1090 | char *command; |
c906108c SS |
1091 | int len, tmp, nfound; |
1092 | struct cmd_list_element *found, *c; | |
56382845 | 1093 | char *line = *text; |
c906108c SS |
1094 | |
1095 | while (**text == ' ' || **text == '\t') | |
1096 | (*text)++; | |
1097 | ||
3386243e AS |
1098 | /* Identify the name of the command. */ |
1099 | len = find_command_name_length (*text); | |
c906108c SS |
1100 | |
1101 | /* If nothing but whitespace, return 0. */ | |
3386243e | 1102 | if (len == 0) |
c906108c | 1103 | return 0; |
c5aa993b | 1104 | |
c906108c SS |
1105 | /* *text and p now bracket the first command word to lookup (and |
1106 | it's length is len). We copy this into a local temporary */ | |
1107 | ||
1108 | ||
1109 | command = (char *) alloca (len + 1); | |
1110 | for (tmp = 0; tmp < len; tmp++) | |
1111 | { | |
1112 | char x = (*text)[tmp]; | |
1113 | command[tmp] = x; | |
1114 | } | |
1115 | command[len] = '\0'; | |
1116 | ||
1117 | /* Look it up. */ | |
1118 | found = 0; | |
1119 | nfound = 0; | |
c5aa993b | 1120 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); |
c906108c SS |
1121 | |
1122 | /* | |
c5aa993b JM |
1123 | ** We didn't find the command in the entered case, so lower case it |
1124 | ** and search again. | |
1125 | */ | |
c906108c SS |
1126 | if (!found || nfound == 0) |
1127 | { | |
1128 | for (tmp = 0; tmp < len; tmp++) | |
c5aa993b JM |
1129 | { |
1130 | char x = command[tmp]; | |
1131 | command[tmp] = isupper (x) ? tolower (x) : x; | |
1132 | } | |
1133 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); | |
c906108c SS |
1134 | } |
1135 | ||
1136 | /* If nothing matches, we have a simple failure. */ | |
1137 | if (nfound == 0) | |
1138 | return 0; | |
1139 | ||
1140 | if (nfound > 1) | |
1141 | { | |
1142 | if (result_list != NULL) | |
1143 | /* Will be modified in calling routine | |
1144 | if we know what the prefix command is. */ | |
c5aa993b JM |
1145 | *result_list = 0; |
1146 | return (struct cmd_list_element *) -1; /* Ambiguous. */ | |
c906108c SS |
1147 | } |
1148 | ||
1149 | /* We've matched something on this list. Move text pointer forward. */ | |
1150 | ||
3386243e | 1151 | *text += len; |
c906108c | 1152 | |
c906108c | 1153 | if (found->cmd_pointer) |
56382845 FN |
1154 | { |
1155 | /* We drop the alias (abbreviation) in favor of the command it is | |
1156 | pointing to. If the alias is deprecated, though, we need to | |
1157 | warn the user about it before we drop it. Note that while we | |
1158 | are warning about the alias, we may also warn about the command | |
1159 | itself and we will adjust the appropriate DEPRECATED_WARN_USER | |
1160 | flags */ | |
1161 | ||
1162 | if (found->flags & DEPRECATED_WARN_USER) | |
938f5214 | 1163 | deprecated_cmd_warning (&line); |
56382845 FN |
1164 | found = found->cmd_pointer; |
1165 | } | |
c906108c SS |
1166 | /* If we found a prefix command, keep looking. */ |
1167 | ||
1168 | if (found->prefixlist) | |
1169 | { | |
1170 | c = lookup_cmd_1 (text, *found->prefixlist, result_list, | |
1171 | ignore_help_classes); | |
1172 | if (!c) | |
1173 | { | |
1174 | /* Didn't find anything; this is as far as we got. */ | |
1175 | if (result_list != NULL) | |
1176 | *result_list = clist; | |
1177 | return found; | |
1178 | } | |
1179 | else if (c == (struct cmd_list_element *) -1) | |
1180 | { | |
1181 | /* We've gotten this far properly, but the next step | |
1182 | is ambiguous. We need to set the result list to the best | |
1183 | we've found (if an inferior hasn't already set it). */ | |
1184 | if (result_list != NULL) | |
1185 | if (!*result_list) | |
1186 | /* This used to say *result_list = *found->prefixlist | |
c5aa993b JM |
1187 | If that was correct, need to modify the documentation |
1188 | at the top of this function to clarify what is supposed | |
1189 | to be going on. */ | |
c906108c SS |
1190 | *result_list = found; |
1191 | return c; | |
1192 | } | |
1193 | else | |
1194 | { | |
1195 | /* We matched! */ | |
1196 | return c; | |
1197 | } | |
1198 | } | |
1199 | else | |
1200 | { | |
1201 | if (result_list != NULL) | |
1202 | *result_list = clist; | |
1203 | return found; | |
1204 | } | |
1205 | } | |
1206 | ||
1207 | /* All this hair to move the space to the front of cmdtype */ | |
1208 | ||
1209 | static void | |
fba45db2 | 1210 | undef_cmd_error (char *cmdtype, char *q) |
c906108c | 1211 | { |
8a3fe4f8 | 1212 | error (_("Undefined %scommand: \"%s\". Try \"help%s%.*s\"."), |
c5aa993b JM |
1213 | cmdtype, |
1214 | q, | |
1215 | *cmdtype ? " " : "", | |
823ca731 | 1216 | (int) strlen (cmdtype) - 1, |
c5aa993b | 1217 | cmdtype); |
c906108c SS |
1218 | } |
1219 | ||
1220 | /* Look up the contents of *LINE as a command in the command list LIST. | |
1221 | LIST is a chain of struct cmd_list_element's. | |
1222 | If it is found, return the struct cmd_list_element for that command | |
1223 | and update *LINE to point after the command name, at the first argument. | |
1224 | If not found, call error if ALLOW_UNKNOWN is zero | |
1225 | otherwise (or if error returns) return zero. | |
1226 | Call error if specified command is ambiguous, | |
1227 | unless ALLOW_UNKNOWN is negative. | |
1228 | CMDTYPE precedes the word "command" in the error message. | |
1229 | ||
1230 | If INGNORE_HELP_CLASSES is nonzero, ignore any command list | |
1231 | elements which are actually help classes rather than commands (i.e. | |
1232 | the function field of the struct cmd_list_element is 0). */ | |
1233 | ||
1234 | struct cmd_list_element * | |
fba45db2 KB |
1235 | lookup_cmd (char **line, struct cmd_list_element *list, char *cmdtype, |
1236 | int allow_unknown, int ignore_help_classes) | |
c906108c SS |
1237 | { |
1238 | struct cmd_list_element *last_list = 0; | |
3cebf8d8 | 1239 | struct cmd_list_element *c; |
c64601c7 FN |
1240 | |
1241 | /* Note: Do not remove trailing whitespace here because this | |
1242 | would be wrong for complete_command. Jim Kingdon */ | |
c5aa993b | 1243 | |
3cebf8d8 MS |
1244 | if (!*line) |
1245 | error (_("Lack of needed %scommand"), cmdtype); | |
1246 | ||
1247 | c = lookup_cmd_1 (line, list, &last_list, ignore_help_classes); | |
1248 | ||
c906108c SS |
1249 | if (!c) |
1250 | { | |
1251 | if (!allow_unknown) | |
1252 | { | |
3cebf8d8 MS |
1253 | char *q; |
1254 | int len = find_command_name_length (*line); | |
c906108c | 1255 | |
3cebf8d8 MS |
1256 | q = (char *) alloca (len + 1); |
1257 | strncpy (q, *line, len); | |
1258 | q[len] = '\0'; | |
1259 | undef_cmd_error (cmdtype, q); | |
c906108c SS |
1260 | } |
1261 | else | |
1262 | return 0; | |
1263 | } | |
1264 | else if (c == (struct cmd_list_element *) -1) | |
1265 | { | |
1266 | /* Ambigous. Local values should be off prefixlist or called | |
c5aa993b | 1267 | values. */ |
c906108c SS |
1268 | int local_allow_unknown = (last_list ? last_list->allow_unknown : |
1269 | allow_unknown); | |
1270 | char *local_cmdtype = last_list ? last_list->prefixname : cmdtype; | |
1271 | struct cmd_list_element *local_list = | |
c5aa993b JM |
1272 | (last_list ? *(last_list->prefixlist) : list); |
1273 | ||
c906108c SS |
1274 | if (local_allow_unknown < 0) |
1275 | { | |
1276 | if (last_list) | |
1277 | return last_list; /* Found something. */ | |
1278 | else | |
1279 | return 0; /* Found nothing. */ | |
1280 | } | |
1281 | else | |
1282 | { | |
1283 | /* Report as error. */ | |
1284 | int amb_len; | |
1285 | char ambbuf[100]; | |
1286 | ||
1287 | for (amb_len = 0; | |
1288 | ((*line)[amb_len] && (*line)[amb_len] != ' ' | |
1289 | && (*line)[amb_len] != '\t'); | |
1290 | amb_len++) | |
1291 | ; | |
c5aa993b | 1292 | |
c906108c SS |
1293 | ambbuf[0] = 0; |
1294 | for (c = local_list; c; c = c->next) | |
1295 | if (!strncmp (*line, c->name, amb_len)) | |
1296 | { | |
c5aa993b | 1297 | if (strlen (ambbuf) + strlen (c->name) + 6 < (int) sizeof ambbuf) |
c906108c SS |
1298 | { |
1299 | if (strlen (ambbuf)) | |
1300 | strcat (ambbuf, ", "); | |
1301 | strcat (ambbuf, c->name); | |
1302 | } | |
1303 | else | |
1304 | { | |
1305 | strcat (ambbuf, ".."); | |
1306 | break; | |
1307 | } | |
1308 | } | |
8a3fe4f8 | 1309 | error (_("Ambiguous %scommand \"%s\": %s."), local_cmdtype, |
c906108c SS |
1310 | *line, ambbuf); |
1311 | return 0; /* lint */ | |
1312 | } | |
1313 | } | |
1314 | else | |
1315 | { | |
1316 | /* We've got something. It may still not be what the caller | |
1317 | wants (if this command *needs* a subcommand). */ | |
1318 | while (**line == ' ' || **line == '\t') | |
1319 | (*line)++; | |
1320 | ||
1321 | if (c->prefixlist && **line && !c->allow_unknown) | |
1322 | undef_cmd_error (c->prefixname, *line); | |
1323 | ||
1324 | /* Seems to be what he wants. Return it. */ | |
1325 | return c; | |
1326 | } | |
1327 | return 0; | |
1328 | } | |
c5aa993b | 1329 | |
56382845 FN |
1330 | /* We are here presumably because an alias or command in *TEXT is |
1331 | deprecated and a warning message should be generated. This function | |
1332 | decodes *TEXT and potentially generates a warning message as outlined | |
1333 | below. | |
1334 | ||
1335 | Example for 'set endian big' which has a fictitious alias 'seb'. | |
1336 | ||
1337 | If alias wasn't used in *TEXT, and the command is deprecated: | |
1338 | "warning: 'set endian big' is deprecated." | |
1339 | ||
1340 | If alias was used, and only the alias is deprecated: | |
1341 | "warning: 'seb' an alias for the command 'set endian big' is deprecated." | |
1342 | ||
1343 | If alias was used and command is deprecated (regardless of whether the | |
1344 | alias itself is deprecated: | |
1345 | ||
1346 | "warning: 'set endian big' (seb) is deprecated." | |
1347 | ||
1348 | After the message has been sent, clear the appropriate flags in the | |
1349 | command and/or the alias so the user is no longer bothered. | |
1350 | ||
1351 | */ | |
1352 | void | |
1353 | deprecated_cmd_warning (char **text) | |
1354 | { | |
1355 | struct cmd_list_element *alias = NULL; | |
1356 | struct cmd_list_element *prefix_cmd = NULL; | |
1357 | struct cmd_list_element *cmd = NULL; | |
1358 | struct cmd_list_element *c; | |
1359 | char *type; | |
edefbb7c | 1360 | |
56382845 FN |
1361 | if (!lookup_cmd_composition (*text, &alias, &prefix_cmd, &cmd)) |
1362 | /* return if text doesn't evaluate to a command */ | |
1363 | return; | |
1364 | ||
1365 | if (!((alias ? (alias->flags & DEPRECATED_WARN_USER) : 0) | |
1366 | || (cmd->flags & DEPRECATED_WARN_USER) ) ) | |
1367 | /* return if nothing is deprecated */ | |
1368 | return; | |
1369 | ||
1370 | printf_filtered ("Warning:"); | |
1371 | ||
1372 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1373 | printf_filtered (" '%s', an alias for the", alias->name); | |
1374 | ||
1375 | printf_filtered (" command '"); | |
1376 | ||
1377 | if (prefix_cmd) | |
1378 | printf_filtered ("%s", prefix_cmd->prefixname); | |
1379 | ||
1380 | printf_filtered ("%s", cmd->name); | |
1381 | ||
1382 | if (alias && (cmd->flags & CMD_DEPRECATED)) | |
1383 | printf_filtered ("' (%s) is deprecated.\n", alias->name); | |
1384 | else | |
1385 | printf_filtered ("' is deprecated.\n"); | |
1386 | ||
1387 | ||
1388 | /* if it is only the alias that is deprecated, we want to indicate the | |
1389 | new alias, otherwise we'll indicate the new command */ | |
1390 | ||
1391 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1392 | { | |
1393 | if (alias->replacement) | |
1394 | printf_filtered ("Use '%s'.\n\n", alias->replacement); | |
1395 | else | |
1396 | printf_filtered ("No alternative known.\n\n"); | |
1397 | } | |
1398 | else | |
1399 | { | |
1400 | if (cmd->replacement) | |
1401 | printf_filtered ("Use '%s'.\n\n", cmd->replacement); | |
1402 | else | |
1403 | printf_filtered ("No alternative known.\n\n"); | |
1404 | } | |
1405 | ||
1406 | /* We've warned you, now we'll keep quiet */ | |
1407 | if (alias) | |
1408 | alias->flags &= ~DEPRECATED_WARN_USER; | |
1409 | ||
1410 | cmd->flags &= ~DEPRECATED_WARN_USER; | |
1411 | } | |
1412 | ||
1413 | ||
1414 | ||
1415 | /* Look up the contents of LINE as a command in the command list 'cmdlist'. | |
1416 | Return 1 on success, 0 on failure. | |
1417 | ||
1418 | If LINE refers to an alias, *alias will point to that alias. | |
1419 | ||
1420 | If LINE is a postfix command (i.e. one that is preceeded by a prefix | |
1421 | command) set *prefix_cmd. | |
1422 | ||
1423 | Set *cmd to point to the command LINE indicates. | |
1424 | ||
1425 | If any of *alias, *prefix_cmd, or *cmd cannot be determined or do not | |
1426 | exist, they are NULL when we return. | |
1427 | ||
1428 | */ | |
1429 | int | |
1430 | lookup_cmd_composition (char *text, | |
1431 | struct cmd_list_element **alias, | |
1432 | struct cmd_list_element **prefix_cmd, | |
1433 | struct cmd_list_element **cmd) | |
1434 | { | |
3386243e | 1435 | char *command; |
56382845 FN |
1436 | int len, tmp, nfound; |
1437 | struct cmd_list_element *cur_list; | |
1438 | struct cmd_list_element *prev_cmd; | |
1439 | *alias = NULL; | |
1440 | *prefix_cmd = NULL; | |
1441 | *cmd = NULL; | |
1442 | ||
1443 | cur_list = cmdlist; | |
1444 | ||
1445 | while (1) | |
1446 | { | |
1447 | /* Go through as many command lists as we need to | |
1448 | to find the command TEXT refers to. */ | |
1449 | ||
1450 | prev_cmd = *cmd; | |
1451 | ||
1452 | while (*text == ' ' || *text == '\t') | |
1453 | (text)++; | |
1454 | ||
3386243e AS |
1455 | /* Identify the name of the command. */ |
1456 | len = find_command_name_length (text); | |
56382845 FN |
1457 | |
1458 | /* If nothing but whitespace, return. */ | |
3386243e AS |
1459 | if (len == 0) |
1460 | return 0; | |
56382845 | 1461 | |
3386243e | 1462 | /* text is the start of the first command word to lookup (and |
56382845 FN |
1463 | it's length is len). We copy this into a local temporary */ |
1464 | ||
1465 | command = (char *) alloca (len + 1); | |
1466 | for (tmp = 0; tmp < len; tmp++) | |
1467 | { | |
1468 | char x = text[tmp]; | |
1469 | command[tmp] = x; | |
1470 | } | |
1471 | command[len] = '\0'; | |
1472 | ||
1473 | /* Look it up. */ | |
1474 | *cmd = 0; | |
1475 | nfound = 0; | |
1476 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1477 | ||
1478 | /* We didn't find the command in the entered case, so lower case it | |
1479 | and search again. | |
1480 | */ | |
1481 | if (!*cmd || nfound == 0) | |
1482 | { | |
1483 | for (tmp = 0; tmp < len; tmp++) | |
1484 | { | |
1485 | char x = command[tmp]; | |
1486 | command[tmp] = isupper (x) ? tolower (x) : x; | |
1487 | } | |
1488 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1489 | } | |
1490 | ||
1491 | if (*cmd == (struct cmd_list_element *) -1) | |
1492 | { | |
1493 | return 0; /* ambiguous */ | |
1494 | } | |
1495 | ||
1496 | if (*cmd == NULL) | |
1497 | return 0; /* nothing found */ | |
1498 | else | |
1499 | { | |
1500 | if ((*cmd)->cmd_pointer) | |
1501 | { | |
1502 | /* cmd was actually an alias, we note that an alias was used | |
1503 | (by assigning *alais) and we set *cmd. | |
1504 | */ | |
1505 | *alias = *cmd; | |
1506 | *cmd = (*cmd)->cmd_pointer; | |
1507 | } | |
1508 | *prefix_cmd = prev_cmd; | |
1509 | } | |
1510 | if ((*cmd)->prefixlist) | |
1511 | cur_list = *(*cmd)->prefixlist; | |
1512 | else | |
1513 | return 1; | |
1514 | ||
3386243e | 1515 | text += len; |
56382845 FN |
1516 | } |
1517 | } | |
1518 | ||
c906108c SS |
1519 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ |
1520 | ||
1521 | /* Return a vector of char pointers which point to the different | |
1522 | possible completions in LIST of TEXT. | |
1523 | ||
1524 | WORD points in the same buffer as TEXT, and completions should be | |
1525 | returned relative to this position. For example, suppose TEXT is "foo" | |
1526 | and we want to complete to "foobar". If WORD is "oo", return | |
1527 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1528 | ||
1529 | char ** | |
fba45db2 | 1530 | complete_on_cmdlist (struct cmd_list_element *list, char *text, char *word) |
c906108c SS |
1531 | { |
1532 | struct cmd_list_element *ptr; | |
1533 | char **matchlist; | |
1534 | int sizeof_matchlist; | |
1535 | int matches; | |
1536 | int textlen = strlen (text); | |
1537 | ||
1538 | sizeof_matchlist = 10; | |
1539 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1540 | matches = 0; | |
1541 | ||
1542 | for (ptr = list; ptr; ptr = ptr->next) | |
1543 | if (!strncmp (ptr->name, text, textlen) | |
1544 | && !ptr->abbrev_flag | |
9f60d481 | 1545 | && (ptr->func |
c906108c SS |
1546 | || ptr->prefixlist)) |
1547 | { | |
1548 | if (matches == sizeof_matchlist) | |
1549 | { | |
1550 | sizeof_matchlist *= 2; | |
c5aa993b | 1551 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1552 | (sizeof_matchlist |
1553 | * sizeof (char *))); | |
1554 | } | |
1555 | ||
c5aa993b | 1556 | matchlist[matches] = (char *) |
c906108c SS |
1557 | xmalloc (strlen (word) + strlen (ptr->name) + 1); |
1558 | if (word == text) | |
1559 | strcpy (matchlist[matches], ptr->name); | |
1560 | else if (word > text) | |
1561 | { | |
1562 | /* Return some portion of ptr->name. */ | |
1563 | strcpy (matchlist[matches], ptr->name + (word - text)); | |
1564 | } | |
1565 | else | |
1566 | { | |
1567 | /* Return some of text plus ptr->name. */ | |
1568 | strncpy (matchlist[matches], word, text - word); | |
1569 | matchlist[matches][text - word] = '\0'; | |
1570 | strcat (matchlist[matches], ptr->name); | |
1571 | } | |
1572 | ++matches; | |
1573 | } | |
1574 | ||
1575 | if (matches == 0) | |
1576 | { | |
b8c9b27d | 1577 | xfree (matchlist); |
c906108c SS |
1578 | matchlist = 0; |
1579 | } | |
1580 | else | |
1581 | { | |
c5aa993b JM |
1582 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1583 | * sizeof (char *))); | |
c906108c SS |
1584 | matchlist[matches] = (char *) 0; |
1585 | } | |
1586 | ||
1587 | return matchlist; | |
1588 | } | |
1589 | ||
1590 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
1591 | ||
1592 | /* Return a vector of char pointers which point to the different | |
1593 | possible completions in CMD of TEXT. | |
1594 | ||
1595 | WORD points in the same buffer as TEXT, and completions should be | |
1596 | returned relative to this position. For example, suppose TEXT is "foo" | |
1597 | and we want to complete to "foobar". If WORD is "oo", return | |
1598 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1599 | ||
1600 | char ** | |
53904c9e AC |
1601 | complete_on_enum (const char *enumlist[], |
1602 | char *text, | |
1603 | char *word) | |
c906108c SS |
1604 | { |
1605 | char **matchlist; | |
1606 | int sizeof_matchlist; | |
1607 | int matches; | |
1608 | int textlen = strlen (text); | |
1609 | int i; | |
53904c9e | 1610 | const char *name; |
c906108c SS |
1611 | |
1612 | sizeof_matchlist = 10; | |
1613 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1614 | matches = 0; | |
1615 | ||
1616 | for (i = 0; (name = enumlist[i]) != NULL; i++) | |
1617 | if (strncmp (name, text, textlen) == 0) | |
1618 | { | |
1619 | if (matches == sizeof_matchlist) | |
1620 | { | |
1621 | sizeof_matchlist *= 2; | |
c5aa993b | 1622 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1623 | (sizeof_matchlist |
1624 | * sizeof (char *))); | |
1625 | } | |
1626 | ||
c5aa993b | 1627 | matchlist[matches] = (char *) |
c906108c SS |
1628 | xmalloc (strlen (word) + strlen (name) + 1); |
1629 | if (word == text) | |
1630 | strcpy (matchlist[matches], name); | |
1631 | else if (word > text) | |
1632 | { | |
1633 | /* Return some portion of name. */ | |
1634 | strcpy (matchlist[matches], name + (word - text)); | |
1635 | } | |
1636 | else | |
1637 | { | |
1638 | /* Return some of text plus name. */ | |
1639 | strncpy (matchlist[matches], word, text - word); | |
1640 | matchlist[matches][text - word] = '\0'; | |
1641 | strcat (matchlist[matches], name); | |
1642 | } | |
1643 | ++matches; | |
1644 | } | |
1645 | ||
1646 | if (matches == 0) | |
1647 | { | |
b8c9b27d | 1648 | xfree (matchlist); |
c906108c SS |
1649 | matchlist = 0; |
1650 | } | |
1651 | else | |
1652 | { | |
c5aa993b JM |
1653 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1654 | * sizeof (char *))); | |
c906108c SS |
1655 | matchlist[matches] = (char *) 0; |
1656 | } | |
1657 | ||
1658 | return matchlist; | |
1659 | } | |
1660 | ||
f436dd25 MH |
1661 | |
1662 | /* check function pointer */ | |
1663 | int | |
1664 | cmd_func_p (struct cmd_list_element *cmd) | |
1665 | { | |
1666 | return (cmd->func != NULL); | |
1667 | } | |
1668 | ||
1669 | ||
1670 | /* call the command function */ | |
1671 | void | |
1672 | cmd_func (struct cmd_list_element *cmd, char *args, int from_tty) | |
1673 | { | |
1674 | if (cmd_func_p (cmd)) | |
1675 | (*cmd->func) (cmd, args, from_tty); | |
1676 | else | |
8a3fe4f8 | 1677 | error (_("Invalid command")); |
f436dd25 MH |
1678 | } |
1679 | ||
1680 |