Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Handle lists of commands, their decoding and documentation, for GDB. |
8926118c | 2 | |
6aba47ca DJ |
3 | Copyright (c) 1986, 1989, 1990, 1991, 1998, 2000, 2001, 2002, 2004, 2007 |
4 | 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 | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
c906108c | 10 | |
c5aa993b JM |
11 | This program is distributed in the hope that it will be useful, |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
c906108c | 15 | |
c5aa993b JM |
16 | You should have received a copy of the GNU General Public License |
17 | along with this program; if not, write to the Free Software | |
10f9c213 EZ |
18 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
19 | Boston, MA 02110-1301, USA. */ | |
c906108c SS |
20 | |
21 | #include "defs.h" | |
c906108c | 22 | #include "symtab.h" |
c906108c | 23 | #include <ctype.h> |
f77b92bf | 24 | #include "gdb_regex.h" |
5f8a3188 | 25 | #include "gdb_string.h" |
f397e303 | 26 | #include "completer.h" |
8b93c638 | 27 | #include "ui-out.h" |
c906108c | 28 | |
d318976c FN |
29 | #include "cli/cli-cmds.h" |
30 | #include "cli/cli-decode.h" | |
53a5351d | 31 | |
6a83354a AC |
32 | #ifdef TUI |
33 | #include "tui/tui.h" /* For tui_active et.al. */ | |
34 | #endif | |
35 | ||
b2875cc0 AC |
36 | #include "gdb_assert.h" |
37 | ||
c906108c SS |
38 | /* Prototypes for local functions */ |
39 | ||
a14ed312 | 40 | static void undef_cmd_error (char *, char *); |
c906108c | 41 | |
a14ed312 KB |
42 | static struct cmd_list_element *find_cmd (char *command, |
43 | int len, | |
44 | struct cmd_list_element *clist, | |
45 | int ignore_help_classes, | |
46 | int *nfound); | |
6837a0a2 | 47 | |
c85871a3 | 48 | static void help_all (struct ui_file *stream); |
6e381ba0 VP |
49 | |
50 | static void | |
51 | print_help_for_command (struct cmd_list_element *c, char *prefix, int recurse, | |
52 | struct ui_file *stream); | |
53 | ||
d318976c | 54 | \f |
9f60d481 AC |
55 | /* Set the callback function for the specified command. For each both |
56 | the commands callback and func() are set. The latter set to a | |
57 | bounce function (unless cfunc / sfunc is NULL that is). */ | |
58 | ||
59 | static void | |
60 | do_cfunc (struct cmd_list_element *c, char *args, int from_tty) | |
61 | { | |
62 | c->function.cfunc (args, from_tty); /* Ok. */ | |
63 | } | |
64 | ||
65 | void | |
9773a94b | 66 | set_cmd_cfunc (struct cmd_list_element *cmd, cmd_cfunc_ftype *cfunc) |
9f60d481 AC |
67 | { |
68 | if (cfunc == NULL) | |
69 | cmd->func = NULL; | |
70 | else | |
71 | cmd->func = do_cfunc; | |
72 | cmd->function.cfunc = cfunc; /* Ok. */ | |
73 | } | |
74 | ||
75 | static void | |
76 | do_sfunc (struct cmd_list_element *c, char *args, int from_tty) | |
77 | { | |
78 | c->function.sfunc (args, from_tty, c); /* Ok. */ | |
79 | } | |
80 | ||
81 | void | |
9773a94b | 82 | set_cmd_sfunc (struct cmd_list_element *cmd, cmd_sfunc_ftype *sfunc) |
9f60d481 AC |
83 | { |
84 | if (sfunc == NULL) | |
85 | cmd->func = NULL; | |
86 | else | |
87 | cmd->func = do_sfunc; | |
88 | cmd->function.sfunc = sfunc; /* Ok. */ | |
89 | } | |
90 | ||
bbaca940 AC |
91 | int |
92 | cmd_cfunc_eq (struct cmd_list_element *cmd, | |
93 | void (*cfunc) (char *args, int from_tty)) | |
94 | { | |
95 | return cmd->func == do_cfunc && cmd->function.cfunc == cfunc; | |
96 | } | |
97 | ||
7d0766f3 AC |
98 | void |
99 | set_cmd_context (struct cmd_list_element *cmd, void *context) | |
100 | { | |
101 | cmd->context = context; | |
102 | } | |
103 | ||
104 | void * | |
105 | get_cmd_context (struct cmd_list_element *cmd) | |
106 | { | |
107 | return cmd->context; | |
108 | } | |
109 | ||
1868c04e AC |
110 | enum cmd_types |
111 | cmd_type (struct cmd_list_element *cmd) | |
112 | { | |
113 | return cmd->type; | |
114 | } | |
115 | ||
5ba2abeb AC |
116 | void |
117 | set_cmd_completer (struct cmd_list_element *cmd, | |
118 | char **(*completer) (char *text, char *word)) | |
119 | { | |
120 | cmd->completer = completer; /* Ok. */ | |
121 | } | |
122 | ||
9f60d481 | 123 | |
c906108c SS |
124 | /* Add element named NAME. |
125 | CLASS is the top level category into which commands are broken down | |
126 | for "help" purposes. | |
127 | FUN should be the function to execute the command; | |
128 | it will get a character string as argument, with leading | |
129 | and trailing blanks already eliminated. | |
130 | ||
131 | DOC is a documentation string for the command. | |
132 | Its first line should be a complete sentence. | |
133 | It should start with ? for a command that is an abbreviation | |
134 | or with * for a command that most users don't need to know about. | |
135 | ||
136 | Add this command to command list *LIST. | |
137 | ||
138 | Returns a pointer to the added command (not necessarily the head | |
139 | of *LIST). */ | |
140 | ||
141 | struct cmd_list_element * | |
af1c1752 KB |
142 | add_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
143 | char *doc, struct cmd_list_element **list) | |
c906108c | 144 | { |
d5b5ac79 | 145 | struct cmd_list_element *c |
c5aa993b | 146 | = (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); |
c906108c SS |
147 | struct cmd_list_element *p; |
148 | ||
149 | delete_cmd (name, list); | |
150 | ||
494b7ec9 | 151 | if (*list == NULL || strcmp ((*list)->name, name) >= 0) |
c906108c SS |
152 | { |
153 | c->next = *list; | |
154 | *list = c; | |
155 | } | |
156 | else | |
157 | { | |
158 | p = *list; | |
494b7ec9 | 159 | while (p->next && strcmp (p->next->name, name) <= 0) |
c5aa993b JM |
160 | { |
161 | p = p->next; | |
162 | } | |
c906108c SS |
163 | c->next = p->next; |
164 | p->next = c; | |
165 | } | |
166 | ||
167 | c->name = name; | |
168 | c->class = class; | |
9f60d481 | 169 | set_cmd_cfunc (c, fun); |
7d0766f3 | 170 | set_cmd_context (c, NULL); |
c906108c | 171 | c->doc = doc; |
56382845 FN |
172 | c->flags = 0; |
173 | c->replacement = NULL; | |
47724592 | 174 | c->pre_show_hook = NULL; |
73bc900d FN |
175 | c->hook_pre = NULL; |
176 | c->hook_post = NULL; | |
177 | c->hook_in = 0; | |
c906108c SS |
178 | c->prefixlist = NULL; |
179 | c->prefixname = NULL; | |
180 | c->allow_unknown = 0; | |
181 | c->abbrev_flag = 0; | |
5ba2abeb | 182 | set_cmd_completer (c, make_symbol_completion_list); |
c906108c SS |
183 | c->type = not_set_cmd; |
184 | c->var = NULL; | |
185 | c->var_type = var_boolean; | |
186 | c->enums = NULL; | |
187 | c->user_commands = NULL; | |
73bc900d FN |
188 | c->hookee_pre = NULL; |
189 | c->hookee_post = NULL; | |
c906108c SS |
190 | c->cmd_pointer = NULL; |
191 | ||
192 | return c; | |
193 | } | |
194 | ||
56382845 FN |
195 | /* Deprecates a command CMD. |
196 | REPLACEMENT is the name of the command which should be used in place | |
197 | of this command, or NULL if no such command exists. | |
198 | ||
199 | This function does not check to see if command REPLACEMENT exists | |
200 | since gdb may not have gotten around to adding REPLACEMENT when this | |
201 | function is called. | |
202 | ||
203 | Returns a pointer to the deprecated command. */ | |
204 | ||
205 | struct cmd_list_element * | |
fba45db2 | 206 | deprecate_cmd (struct cmd_list_element *cmd, char *replacement) |
56382845 FN |
207 | { |
208 | cmd->flags |= (CMD_DEPRECATED | DEPRECATED_WARN_USER); | |
209 | ||
210 | if (replacement != NULL) | |
211 | cmd->replacement = replacement; | |
212 | else | |
213 | cmd->replacement = NULL; | |
214 | ||
215 | return cmd; | |
216 | } | |
217 | ||
c906108c | 218 | struct cmd_list_element * |
fba45db2 KB |
219 | add_alias_cmd (char *name, char *oldname, enum command_class class, |
220 | int abbrev_flag, struct cmd_list_element **list) | |
c906108c SS |
221 | { |
222 | /* Must do this since lookup_cmd tries to side-effect its first arg */ | |
223 | char *copied_name; | |
d5b5ac79 AC |
224 | struct cmd_list_element *old; |
225 | struct cmd_list_element *c; | |
c906108c SS |
226 | copied_name = (char *) alloca (strlen (oldname) + 1); |
227 | strcpy (copied_name, oldname); | |
c5aa993b | 228 | old = lookup_cmd (&copied_name, *list, "", 1, 1); |
c906108c SS |
229 | |
230 | if (old == 0) | |
231 | { | |
232 | delete_cmd (name, list); | |
233 | return 0; | |
234 | } | |
235 | ||
9f60d481 AC |
236 | c = add_cmd (name, class, NULL, old->doc, list); |
237 | /* NOTE: Both FUNC and all the FUNCTIONs need to be copied. */ | |
238 | c->func = old->func; | |
239 | c->function = old->function; | |
c906108c SS |
240 | c->prefixlist = old->prefixlist; |
241 | c->prefixname = old->prefixname; | |
242 | c->allow_unknown = old->allow_unknown; | |
243 | c->abbrev_flag = abbrev_flag; | |
244 | c->cmd_pointer = old; | |
245 | return c; | |
246 | } | |
247 | ||
248 | /* Like add_cmd but adds an element for a command prefix: | |
249 | a name that should be followed by a subcommand to be looked up | |
250 | in another command list. PREFIXLIST should be the address | |
251 | of the variable containing that list. */ | |
252 | ||
253 | struct cmd_list_element * | |
af1c1752 KB |
254 | add_prefix_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
255 | char *doc, struct cmd_list_element **prefixlist, | |
256 | char *prefixname, int allow_unknown, | |
257 | struct cmd_list_element **list) | |
c906108c | 258 | { |
d5b5ac79 | 259 | struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); |
c906108c SS |
260 | c->prefixlist = prefixlist; |
261 | c->prefixname = prefixname; | |
262 | c->allow_unknown = allow_unknown; | |
263 | return c; | |
264 | } | |
265 | ||
266 | /* Like add_prefix_cmd but sets the abbrev_flag on the new command. */ | |
c5aa993b | 267 | |
c906108c | 268 | struct cmd_list_element * |
af1c1752 KB |
269 | add_abbrev_prefix_cmd (char *name, enum command_class class, |
270 | void (*fun) (char *, int), char *doc, | |
271 | struct cmd_list_element **prefixlist, char *prefixname, | |
272 | int allow_unknown, struct cmd_list_element **list) | |
c906108c | 273 | { |
d5b5ac79 | 274 | struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); |
c906108c SS |
275 | c->prefixlist = prefixlist; |
276 | c->prefixname = prefixname; | |
277 | c->allow_unknown = allow_unknown; | |
278 | c->abbrev_flag = 1; | |
279 | return c; | |
280 | } | |
281 | ||
282 | /* This is an empty "cfunc". */ | |
283 | void | |
fba45db2 | 284 | not_just_help_class_command (char *args, int from_tty) |
c906108c SS |
285 | { |
286 | } | |
287 | ||
288 | /* This is an empty "sfunc". */ | |
a14ed312 | 289 | static void empty_sfunc (char *, int, struct cmd_list_element *); |
c906108c SS |
290 | |
291 | static void | |
fba45db2 | 292 | empty_sfunc (char *args, int from_tty, struct cmd_list_element *c) |
c906108c SS |
293 | { |
294 | } | |
295 | ||
b2875cc0 | 296 | /* Add element named NAME to command list LIST (the list for set/show |
c906108c | 297 | or some sublist thereof). |
b2875cc0 | 298 | TYPE is set_cmd or show_cmd. |
c906108c SS |
299 | CLASS is as in add_cmd. |
300 | VAR_TYPE is the kind of thing we are setting. | |
301 | VAR is address of the variable being controlled by this command. | |
302 | DOC is the documentation string. */ | |
303 | ||
b2875cc0 AC |
304 | static struct cmd_list_element * |
305 | add_set_or_show_cmd (char *name, | |
306 | enum cmd_types type, | |
307 | enum command_class class, | |
308 | var_types var_type, | |
309 | void *var, | |
310 | char *doc, | |
311 | struct cmd_list_element **list) | |
c906108c | 312 | { |
e00d1dc8 | 313 | struct cmd_list_element *c = add_cmd (name, class, NULL, doc, list); |
b2875cc0 AC |
314 | gdb_assert (type == set_cmd || type == show_cmd); |
315 | c->type = type; | |
c906108c SS |
316 | c->var_type = var_type; |
317 | c->var = var; | |
e00d1dc8 | 318 | /* This needs to be something besides NULL so that this isn't |
c906108c | 319 | treated as a help class. */ |
9f60d481 | 320 | set_cmd_sfunc (c, empty_sfunc); |
c906108c SS |
321 | return c; |
322 | } | |
323 | ||
e707bbc2 AC |
324 | /* Add element named NAME to both the command SET_LIST and SHOW_LIST. |
325 | CLASS is as in add_cmd. VAR_TYPE is the kind of thing we are | |
326 | setting. VAR is address of the variable being controlled by this | |
327 | command. SET_FUNC and SHOW_FUNC are the callback functions (if | |
3b64bf98 AC |
328 | non-NULL). SET_DOC, SHOW_DOC and HELP_DOC are the documentation |
329 | strings. PRINT the format string to print the value. SET_RESULT | |
330 | and SHOW_RESULT, if not NULL, are set to the resulting command | |
331 | structures. */ | |
e707bbc2 | 332 | |
b3f42336 | 333 | static void |
9f064c95 TT |
334 | add_setshow_cmd_full (char *name, |
335 | enum command_class class, | |
336 | var_types var_type, void *var, | |
3b64bf98 | 337 | const char *set_doc, const char *show_doc, |
335cca0d | 338 | const char *help_doc, |
3b64bf98 | 339 | cmd_sfunc_ftype *set_func, |
08546159 | 340 | show_value_ftype *show_func, |
9f064c95 TT |
341 | struct cmd_list_element **set_list, |
342 | struct cmd_list_element **show_list, | |
343 | struct cmd_list_element **set_result, | |
344 | struct cmd_list_element **show_result) | |
e707bbc2 AC |
345 | { |
346 | struct cmd_list_element *set; | |
347 | struct cmd_list_element *show; | |
be7d7357 AC |
348 | char *full_set_doc; |
349 | char *full_show_doc; | |
350 | ||
351 | if (help_doc != NULL) | |
352 | { | |
353 | full_set_doc = xstrprintf ("%s\n%s", set_doc, help_doc); | |
354 | full_show_doc = xstrprintf ("%s\n%s", show_doc, help_doc); | |
355 | } | |
356 | else | |
357 | { | |
358 | full_set_doc = xstrdup (set_doc); | |
359 | full_show_doc = xstrdup (show_doc); | |
360 | } | |
e707bbc2 | 361 | set = add_set_or_show_cmd (name, set_cmd, class, var_type, var, |
3b64bf98 | 362 | full_set_doc, set_list); |
e707bbc2 AC |
363 | if (set_func != NULL) |
364 | set_cmd_sfunc (set, set_func); | |
365 | show = add_set_or_show_cmd (name, show_cmd, class, var_type, var, | |
3b64bf98 | 366 | full_show_doc, show_list); |
08546159 | 367 | show->show_value_func = show_func; |
9f064c95 TT |
368 | |
369 | if (set_result != NULL) | |
370 | *set_result = set; | |
371 | if (show_result != NULL) | |
372 | *show_result = show; | |
373 | } | |
374 | ||
b2875cc0 | 375 | struct cmd_list_element * |
b66df561 AC |
376 | deprecated_add_set_cmd (char *name, |
377 | enum command_class class, | |
378 | var_types var_type, | |
379 | void *var, | |
380 | char *doc, | |
381 | struct cmd_list_element **list) | |
b2875cc0 AC |
382 | { |
383 | return add_set_or_show_cmd (name, set_cmd, class, var_type, var, doc, list); | |
384 | } | |
385 | ||
1b295c3d AC |
386 | /* Add element named NAME to command list LIST (the list for set or |
387 | some sublist thereof). CLASS is as in add_cmd. ENUMLIST is a list | |
388 | of strings which may follow NAME. VAR is address of the variable | |
389 | which will contain the matching string (from ENUMLIST). */ | |
390 | ||
391 | void | |
392 | add_setshow_enum_cmd (char *name, | |
393 | enum command_class class, | |
394 | const char *enumlist[], | |
395 | const char **var, | |
396 | const char *set_doc, | |
397 | const char *show_doc, | |
398 | const char *help_doc, | |
1b295c3d | 399 | cmd_sfunc_ftype *set_func, |
08546159 | 400 | show_value_ftype *show_func, |
1b295c3d | 401 | struct cmd_list_element **set_list, |
7376b4c2 | 402 | struct cmd_list_element **show_list) |
1b295c3d AC |
403 | { |
404 | struct cmd_list_element *c; | |
405 | add_setshow_cmd_full (name, class, var_enum, var, | |
335cca0d | 406 | set_doc, show_doc, help_doc, |
1b295c3d AC |
407 | set_func, show_func, |
408 | set_list, show_list, | |
7376b4c2 | 409 | &c, NULL); |
1b295c3d AC |
410 | c->enums = enumlist; |
411 | } | |
412 | ||
e9e68a56 AC |
413 | /* Add an auto-boolean command named NAME to both the set and show |
414 | command list lists. CLASS is as in add_cmd. VAR is address of the | |
415 | variable which will contain the value. DOC is the documentation | |
416 | string. FUNC is the corresponding callback. */ | |
417 | void | |
418 | add_setshow_auto_boolean_cmd (char *name, | |
419 | enum command_class class, | |
420 | enum auto_boolean *var, | |
3b64bf98 | 421 | const char *set_doc, const char *show_doc, |
335cca0d | 422 | const char *help_doc, |
e9e68a56 | 423 | cmd_sfunc_ftype *set_func, |
08546159 | 424 | show_value_ftype *show_func, |
e9e68a56 AC |
425 | struct cmd_list_element **set_list, |
426 | struct cmd_list_element **show_list) | |
97c3646f AC |
427 | { |
428 | static const char *auto_boolean_enums[] = { "on", "off", "auto", NULL }; | |
429 | struct cmd_list_element *c; | |
9f064c95 | 430 | add_setshow_cmd_full (name, class, var_auto_boolean, var, |
2c5b56ce | 431 | set_doc, show_doc, help_doc, |
3b64bf98 | 432 | set_func, show_func, |
9f064c95 TT |
433 | set_list, show_list, |
434 | &c, NULL); | |
97c3646f | 435 | c->enums = auto_boolean_enums; |
97c3646f AC |
436 | } |
437 | ||
e707bbc2 AC |
438 | /* Add element named NAME to both the set and show command LISTs (the |
439 | list for set/show or some sublist thereof). CLASS is as in | |
440 | add_cmd. VAR is address of the variable which will contain the | |
ba3e8e46 | 441 | value. SET_DOC and SHOW_DOC are the documentation strings. */ |
e707bbc2 | 442 | void |
3b64bf98 AC |
443 | add_setshow_boolean_cmd (char *name, enum command_class class, int *var, |
444 | const char *set_doc, const char *show_doc, | |
335cca0d | 445 | const char *help_doc, |
e707bbc2 | 446 | cmd_sfunc_ftype *set_func, |
08546159 | 447 | show_value_ftype *show_func, |
e707bbc2 AC |
448 | struct cmd_list_element **set_list, |
449 | struct cmd_list_element **show_list) | |
f3796e26 AC |
450 | { |
451 | static const char *boolean_enums[] = { "on", "off", NULL }; | |
452 | struct cmd_list_element *c; | |
9f064c95 | 453 | add_setshow_cmd_full (name, class, var_boolean, var, |
2c5b56ce | 454 | set_doc, show_doc, help_doc, |
9f064c95 TT |
455 | set_func, show_func, |
456 | set_list, show_list, | |
457 | &c, NULL); | |
f3796e26 | 458 | c->enums = boolean_enums; |
f3796e26 AC |
459 | } |
460 | ||
b3f42336 AC |
461 | /* Add element named NAME to both the set and show command LISTs (the |
462 | list for set/show or some sublist thereof). */ | |
463 | void | |
464 | add_setshow_filename_cmd (char *name, enum command_class class, | |
465 | char **var, | |
466 | const char *set_doc, const char *show_doc, | |
335cca0d | 467 | const char *help_doc, |
b3f42336 | 468 | cmd_sfunc_ftype *set_func, |
08546159 | 469 | show_value_ftype *show_func, |
b3f42336 AC |
470 | struct cmd_list_element **set_list, |
471 | struct cmd_list_element **show_list) | |
472 | { | |
f397e303 | 473 | struct cmd_list_element *set_result; |
b3f42336 | 474 | add_setshow_cmd_full (name, class, var_filename, var, |
2c5b56ce | 475 | set_doc, show_doc, help_doc, |
b3f42336 AC |
476 | set_func, show_func, |
477 | set_list, show_list, | |
f397e303 AC |
478 | &set_result, NULL); |
479 | set_cmd_completer (set_result, filename_completer); | |
b3f42336 AC |
480 | } |
481 | ||
482 | /* Add element named NAME to both the set and show command LISTs (the | |
483 | list for set/show or some sublist thereof). */ | |
484 | void | |
485 | add_setshow_string_cmd (char *name, enum command_class class, | |
6df3bc68 MS |
486 | char **var, |
487 | const char *set_doc, const char *show_doc, | |
488 | const char *help_doc, | |
489 | cmd_sfunc_ftype *set_func, | |
490 | show_value_ftype *show_func, | |
491 | struct cmd_list_element **set_list, | |
492 | struct cmd_list_element **show_list) | |
b3f42336 AC |
493 | { |
494 | add_setshow_cmd_full (name, class, var_string, var, | |
2c5b56ce | 495 | set_doc, show_doc, help_doc, |
b3f42336 AC |
496 | set_func, show_func, |
497 | set_list, show_list, | |
498 | NULL, NULL); | |
499 | } | |
500 | ||
26c41df3 AC |
501 | /* Add element named NAME to both the set and show command LISTs (the |
502 | list for set/show or some sublist thereof). */ | |
503 | void | |
504 | add_setshow_string_noescape_cmd (char *name, enum command_class class, | |
505 | char **var, | |
506 | const char *set_doc, const char *show_doc, | |
507 | const char *help_doc, | |
508 | cmd_sfunc_ftype *set_func, | |
509 | show_value_ftype *show_func, | |
510 | struct cmd_list_element **set_list, | |
511 | struct cmd_list_element **show_list) | |
512 | { | |
513 | add_setshow_cmd_full (name, class, var_string_noescape, var, | |
514 | set_doc, show_doc, help_doc, | |
515 | set_func, show_func, | |
516 | set_list, show_list, | |
517 | NULL, NULL); | |
518 | } | |
519 | ||
b4b4ac0b AC |
520 | /* Add element named NAME to both the set and show command LISTs (the |
521 | list for set/show or some sublist thereof). */ | |
522 | void | |
523 | add_setshow_optional_filename_cmd (char *name, enum command_class class, | |
524 | char **var, | |
525 | const char *set_doc, const char *show_doc, | |
526 | const char *help_doc, | |
527 | cmd_sfunc_ftype *set_func, | |
528 | show_value_ftype *show_func, | |
529 | struct cmd_list_element **set_list, | |
530 | struct cmd_list_element **show_list) | |
531 | { | |
532 | add_setshow_cmd_full (name, class, var_optional_filename, var, | |
533 | set_doc, show_doc, help_doc, | |
534 | set_func, show_func, | |
535 | set_list, show_list, | |
536 | NULL, NULL); | |
537 | } | |
538 | ||
c0d88b1b AC |
539 | /* Add element named NAME to both the set and show command LISTs (the |
540 | list for set/show or some sublist thereof). CLASS is as in | |
541 | add_cmd. VAR is address of the variable which will contain the | |
542 | value. SET_DOC and SHOW_DOC are the documentation strings. */ | |
543 | void | |
544 | add_setshow_integer_cmd (char *name, enum command_class class, | |
47b667de | 545 | int *var, |
6df3bc68 MS |
546 | const char *set_doc, const char *show_doc, |
547 | const char *help_doc, | |
548 | cmd_sfunc_ftype *set_func, | |
549 | show_value_ftype *show_func, | |
550 | struct cmd_list_element **set_list, | |
551 | struct cmd_list_element **show_list) | |
c0d88b1b AC |
552 | { |
553 | add_setshow_cmd_full (name, class, var_integer, var, | |
554 | set_doc, show_doc, help_doc, | |
555 | set_func, show_func, | |
556 | set_list, show_list, | |
557 | NULL, NULL); | |
558 | } | |
559 | ||
25d29d70 AC |
560 | /* Add element named NAME to both the set and show command LISTs (the |
561 | list for set/show or some sublist thereof). CLASS is as in | |
562 | add_cmd. VAR is address of the variable which will contain the | |
ba3e8e46 | 563 | value. SET_DOC and SHOW_DOC are the documentation strings. */ |
25d29d70 | 564 | void |
3b64bf98 AC |
565 | add_setshow_uinteger_cmd (char *name, enum command_class class, |
566 | unsigned int *var, | |
567 | const char *set_doc, const char *show_doc, | |
335cca0d | 568 | const char *help_doc, |
25d29d70 | 569 | cmd_sfunc_ftype *set_func, |
08546159 | 570 | show_value_ftype *show_func, |
25d29d70 AC |
571 | struct cmd_list_element **set_list, |
572 | struct cmd_list_element **show_list) | |
573 | { | |
574 | add_setshow_cmd_full (name, class, var_uinteger, var, | |
2c5b56ce | 575 | set_doc, show_doc, help_doc, |
25d29d70 AC |
576 | set_func, show_func, |
577 | set_list, show_list, | |
578 | NULL, NULL); | |
579 | } | |
580 | ||
15170568 AC |
581 | /* Add element named NAME to both the set and show command LISTs (the |
582 | list for set/show or some sublist thereof). CLASS is as in | |
583 | add_cmd. VAR is address of the variable which will contain the | |
ba3e8e46 | 584 | value. SET_DOC and SHOW_DOC are the documentation strings. */ |
15170568 | 585 | void |
3b64bf98 AC |
586 | add_setshow_zinteger_cmd (char *name, enum command_class class, |
587 | int *var, | |
588 | const char *set_doc, const char *show_doc, | |
335cca0d | 589 | const char *help_doc, |
15170568 | 590 | cmd_sfunc_ftype *set_func, |
08546159 | 591 | show_value_ftype *show_func, |
15170568 AC |
592 | struct cmd_list_element **set_list, |
593 | struct cmd_list_element **show_list) | |
594 | { | |
595 | add_setshow_cmd_full (name, class, var_zinteger, var, | |
2c5b56ce | 596 | set_doc, show_doc, help_doc, |
15170568 AC |
597 | set_func, show_func, |
598 | set_list, show_list, | |
599 | NULL, NULL); | |
600 | } | |
601 | ||
c906108c SS |
602 | /* Remove the command named NAME from the command list. */ |
603 | ||
604 | void | |
fba45db2 | 605 | delete_cmd (char *name, struct cmd_list_element **list) |
c906108c | 606 | { |
d5b5ac79 | 607 | struct cmd_list_element *c; |
c906108c SS |
608 | struct cmd_list_element *p; |
609 | ||
6314a349 | 610 | while (*list && strcmp ((*list)->name, name) == 0) |
c906108c | 611 | { |
73bc900d FN |
612 | if ((*list)->hookee_pre) |
613 | (*list)->hookee_pre->hook_pre = 0; /* Hook slips out of its mouth */ | |
614 | if ((*list)->hookee_post) | |
615 | (*list)->hookee_post->hook_post = 0; /* Hook slips out of its bottom */ | |
c906108c | 616 | p = (*list)->next; |
b8c9b27d | 617 | xfree (* list); |
c906108c SS |
618 | *list = p; |
619 | } | |
620 | ||
621 | if (*list) | |
622 | for (c = *list; c->next;) | |
623 | { | |
6314a349 | 624 | if (strcmp (c->next->name, name) == 0) |
c906108c | 625 | { |
73bc900d FN |
626 | if (c->next->hookee_pre) |
627 | c->next->hookee_pre->hook_pre = 0; /* hooked cmd gets away. */ | |
628 | if (c->next->hookee_post) | |
629 | c->next->hookee_post->hook_post = 0; /* remove post hook */ | |
630 | /* :( no fishing metaphore */ | |
c906108c | 631 | p = c->next->next; |
b8c9b27d | 632 | xfree (c->next); |
c906108c SS |
633 | c->next = p; |
634 | } | |
635 | else | |
636 | c = c->next; | |
637 | } | |
638 | } | |
d318976c FN |
639 | \f |
640 | /* Shorthands to the commands above. */ | |
641 | ||
642 | /* Add an element to the list of info subcommands. */ | |
643 | ||
644 | struct cmd_list_element * | |
645 | add_info (char *name, void (*fun) (char *, int), char *doc) | |
646 | { | |
647 | return add_cmd (name, no_class, fun, doc, &infolist); | |
648 | } | |
649 | ||
650 | /* Add an alias to the list of info subcommands. */ | |
651 | ||
652 | struct cmd_list_element * | |
653 | add_info_alias (char *name, char *oldname, int abbrev_flag) | |
654 | { | |
655 | return add_alias_cmd (name, oldname, 0, abbrev_flag, &infolist); | |
656 | } | |
657 | ||
658 | /* Add an element to the list of commands. */ | |
659 | ||
660 | struct cmd_list_element * | |
661 | add_com (char *name, enum command_class class, void (*fun) (char *, int), | |
662 | char *doc) | |
663 | { | |
664 | return add_cmd (name, class, fun, doc, &cmdlist); | |
665 | } | |
666 | ||
667 | /* Add an alias or abbreviation command to the list of commands. */ | |
668 | ||
669 | struct cmd_list_element * | |
670 | add_com_alias (char *name, char *oldname, enum command_class class, | |
671 | int abbrev_flag) | |
672 | { | |
673 | return add_alias_cmd (name, oldname, class, abbrev_flag, &cmdlist); | |
674 | } | |
675 | \f | |
6837a0a2 DB |
676 | /* Recursively walk the commandlist structures, and print out the |
677 | documentation of commands that match our regex in either their | |
678 | name, or their documentation. | |
679 | */ | |
d318976c FN |
680 | void |
681 | apropos_cmd (struct ui_file *stream, struct cmd_list_element *commandlist, | |
6837a0a2 DB |
682 | struct re_pattern_buffer *regex, char *prefix) |
683 | { | |
d5b5ac79 | 684 | struct cmd_list_element *c; |
6837a0a2 DB |
685 | int returnvalue=1; /*Needed to avoid double printing*/ |
686 | /* Walk through the commands */ | |
687 | for (c=commandlist;c;c=c->next) | |
688 | { | |
689 | if (c->name != NULL) | |
690 | { | |
691 | /* Try to match against the name*/ | |
692 | returnvalue=re_search(regex,c->name,strlen(c->name),0,strlen(c->name),NULL); | |
693 | if (returnvalue >= 0) | |
694 | { | |
6e381ba0 VP |
695 | print_help_for_command (c, prefix, |
696 | 0 /* don't recurse */, stream); | |
6837a0a2 DB |
697 | } |
698 | } | |
699 | if (c->doc != NULL && returnvalue != 0) | |
700 | { | |
701 | /* Try to match against documentation */ | |
702 | if (re_search(regex,c->doc,strlen(c->doc),0,strlen(c->doc),NULL) >=0) | |
703 | { | |
6e381ba0 VP |
704 | print_help_for_command (c, prefix, |
705 | 0 /* don't recurse */, stream); | |
6837a0a2 DB |
706 | } |
707 | } | |
708 | /* Check if this command has subcommands */ | |
709 | if (c->prefixlist != NULL) | |
710 | { | |
711 | /* Recursively call ourselves on the subcommand list, | |
712 | passing the right prefix in. | |
713 | */ | |
d318976c | 714 | apropos_cmd (stream,*c->prefixlist,regex,c->prefixname); |
6837a0a2 DB |
715 | } |
716 | } | |
717 | } | |
c906108c SS |
718 | |
719 | /* This command really has to deal with two things: | |
720 | * 1) I want documentation on *this string* (usually called by | |
721 | * "help commandname"). | |
722 | * 2) I want documentation on *this list* (usually called by | |
723 | * giving a command that requires subcommands. Also called by saying | |
724 | * just "help".) | |
725 | * | |
726 | * I am going to split this into two seperate comamnds, help_cmd and | |
727 | * help_list. | |
728 | */ | |
729 | ||
730 | void | |
fba45db2 | 731 | help_cmd (char *command, struct ui_file *stream) |
c906108c SS |
732 | { |
733 | struct cmd_list_element *c; | |
734 | extern struct cmd_list_element *cmdlist; | |
735 | ||
736 | if (!command) | |
737 | { | |
738 | help_list (cmdlist, "", all_classes, stream); | |
739 | return; | |
740 | } | |
741 | ||
49a5a3a3 GM |
742 | if (strcmp (command, "all") == 0) |
743 | { | |
744 | help_all (stream); | |
745 | return; | |
746 | } | |
747 | ||
c906108c SS |
748 | c = lookup_cmd (&command, cmdlist, "", 0, 0); |
749 | ||
750 | if (c == 0) | |
751 | return; | |
752 | ||
753 | /* There are three cases here. | |
754 | If c->prefixlist is nonzero, we have a prefix command. | |
755 | Print its documentation, then list its subcommands. | |
c5aa993b | 756 | |
9f60d481 AC |
757 | If c->func is non NULL, we really have a command. Print its |
758 | documentation and return. | |
c5aa993b | 759 | |
9f60d481 AC |
760 | If c->func is NULL, we have a class name. Print its |
761 | documentation (as if it were a command) and then set class to the | |
762 | number of this class so that the commands in the class will be | |
763 | listed. */ | |
c906108c SS |
764 | |
765 | fputs_filtered (c->doc, stream); | |
766 | fputs_filtered ("\n", stream); | |
767 | ||
9f60d481 | 768 | if (c->prefixlist == 0 && c->func != NULL) |
c906108c SS |
769 | return; |
770 | fprintf_filtered (stream, "\n"); | |
771 | ||
772 | /* If this is a prefix command, print it's subcommands */ | |
773 | if (c->prefixlist) | |
774 | help_list (*c->prefixlist, c->prefixname, all_commands, stream); | |
775 | ||
776 | /* If this is a class name, print all of the commands in the class */ | |
9f60d481 | 777 | if (c->func == NULL) |
c906108c SS |
778 | help_list (cmdlist, "", c->class, stream); |
779 | ||
73bc900d FN |
780 | if (c->hook_pre || c->hook_post) |
781 | fprintf_filtered (stream, | |
782 | "\nThis command has a hook (or hooks) defined:\n"); | |
783 | ||
784 | if (c->hook_pre) | |
785 | fprintf_filtered (stream, | |
786 | "\tThis command is run after : %s (pre hook)\n", | |
787 | c->hook_pre->name); | |
788 | if (c->hook_post) | |
789 | fprintf_filtered (stream, | |
790 | "\tThis command is run before : %s (post hook)\n", | |
791 | c->hook_post->name); | |
c906108c SS |
792 | } |
793 | ||
794 | /* | |
795 | * Get a specific kind of help on a command list. | |
796 | * | |
797 | * LIST is the list. | |
798 | * CMDTYPE is the prefix to use in the title string. | |
799 | * CLASS is the class with which to list the nodes of this list (see | |
800 | * documentation for help_cmd_list below), As usual, ALL_COMMANDS for | |
801 | * everything, ALL_CLASSES for just classes, and non-negative for only things | |
802 | * in a specific class. | |
803 | * and STREAM is the output stream on which to print things. | |
804 | * If you call this routine with a class >= 0, it recurses. | |
805 | */ | |
806 | void | |
fba45db2 KB |
807 | help_list (struct cmd_list_element *list, char *cmdtype, |
808 | enum command_class class, struct ui_file *stream) | |
c906108c SS |
809 | { |
810 | int len; | |
811 | char *cmdtype1, *cmdtype2; | |
c5aa993b | 812 | |
c906108c SS |
813 | /* If CMDTYPE is "foo ", CMDTYPE1 gets " foo" and CMDTYPE2 gets "foo sub" */ |
814 | len = strlen (cmdtype); | |
815 | cmdtype1 = (char *) alloca (len + 1); | |
816 | cmdtype1[0] = 0; | |
817 | cmdtype2 = (char *) alloca (len + 4); | |
818 | cmdtype2[0] = 0; | |
819 | if (len) | |
820 | { | |
821 | cmdtype1[0] = ' '; | |
822 | strncpy (cmdtype1 + 1, cmdtype, len - 1); | |
823 | cmdtype1[len] = 0; | |
824 | strncpy (cmdtype2, cmdtype, len - 1); | |
825 | strcpy (cmdtype2 + len - 1, " sub"); | |
826 | } | |
827 | ||
828 | if (class == all_classes) | |
829 | fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2); | |
830 | else | |
831 | fprintf_filtered (stream, "List of %scommands:\n\n", cmdtype2); | |
832 | ||
c5aa993b | 833 | help_cmd_list (list, class, cmdtype, (int) class >= 0, stream); |
c906108c SS |
834 | |
835 | if (class == all_classes) | |
de74f71f MS |
836 | { |
837 | fprintf_filtered (stream, "\n\ | |
838 | Type \"help%s\" followed by a class name for a list of commands in ", | |
839 | cmdtype1); | |
840 | wrap_here (""); | |
841 | fprintf_filtered (stream, "that class."); | |
6e381ba0 VP |
842 | |
843 | fprintf_filtered (stream, "\n\ | |
844 | Type \"help all\" for the list of all commands."); | |
de74f71f | 845 | } |
c906108c | 846 | |
de74f71f | 847 | fprintf_filtered (stream, "\nType \"help%s\" followed by %scommand name ", |
c5aa993b | 848 | cmdtype1, cmdtype2); |
de74f71f MS |
849 | wrap_here (""); |
850 | fputs_filtered ("for ", stream); | |
851 | wrap_here (""); | |
852 | fputs_filtered ("full ", stream); | |
853 | wrap_here (""); | |
854 | fputs_filtered ("documentation.\n", stream); | |
6e381ba0 VP |
855 | fputs_filtered ("Type \"apropos word\" to search " |
856 | "for commands related to \"word\".\n", stream); | |
de74f71f MS |
857 | fputs_filtered ("Command name abbreviations are allowed if unambiguous.\n", |
858 | stream); | |
c906108c | 859 | } |
c5aa993b | 860 | |
49a5a3a3 | 861 | static void |
c85871a3 | 862 | help_all (struct ui_file *stream) |
49a5a3a3 GM |
863 | { |
864 | struct cmd_list_element *c; | |
865 | extern struct cmd_list_element *cmdlist; | |
6e381ba0 | 866 | int seen_unclassified = 0; |
49a5a3a3 GM |
867 | |
868 | for (c = cmdlist; c; c = c->next) | |
869 | { | |
870 | if (c->abbrev_flag) | |
871 | continue; | |
49a5a3a3 | 872 | /* If this is a class name, print all of the commands in the class */ |
6e381ba0 VP |
873 | |
874 | if (c->func == NULL) | |
875 | { | |
876 | fprintf_filtered (stream, "\nCommand class: %s\n\n", c->name); | |
877 | help_cmd_list (cmdlist, c->class, "", 1, stream); | |
878 | } | |
49a5a3a3 | 879 | } |
6e381ba0 VP |
880 | |
881 | /* While it's expected that all commands are in some class, | |
882 | as a safety measure, we'll print commands outside of any | |
883 | class at the end. */ | |
884 | ||
885 | for (c = cmdlist; c; c = c->next) | |
886 | { | |
887 | if (c->abbrev_flag) | |
888 | continue; | |
889 | ||
890 | if (c->class == no_class) | |
891 | { | |
892 | if (!seen_unclassified) | |
893 | { | |
894 | fprintf_filtered (stream, "\nUnclassified commands\n\n"); | |
895 | seen_unclassified = 1; | |
896 | } | |
897 | print_help_for_command (c, "", 1, stream); | |
898 | } | |
899 | } | |
900 | ||
49a5a3a3 GM |
901 | } |
902 | ||
c906108c | 903 | /* Print only the first line of STR on STREAM. */ |
d318976c | 904 | void |
fba45db2 | 905 | print_doc_line (struct ui_file *stream, char *str) |
c906108c SS |
906 | { |
907 | static char *line_buffer = 0; | |
908 | static int line_size; | |
d5b5ac79 | 909 | char *p; |
c906108c SS |
910 | |
911 | if (!line_buffer) | |
912 | { | |
913 | line_size = 80; | |
914 | line_buffer = (char *) xmalloc (line_size); | |
915 | } | |
916 | ||
917 | p = str; | |
918 | while (*p && *p != '\n' && *p != '.' && *p != ',') | |
919 | p++; | |
920 | if (p - str > line_size - 1) | |
921 | { | |
922 | line_size = p - str + 1; | |
b8c9b27d | 923 | xfree (line_buffer); |
c906108c SS |
924 | line_buffer = (char *) xmalloc (line_size); |
925 | } | |
926 | strncpy (line_buffer, str, p - str); | |
927 | line_buffer[p - str] = '\0'; | |
928 | if (islower (line_buffer[0])) | |
929 | line_buffer[0] = toupper (line_buffer[0]); | |
8b93c638 | 930 | ui_out_text (uiout, line_buffer); |
c906108c SS |
931 | } |
932 | ||
6e381ba0 VP |
933 | /* Print one-line help for command C. |
934 | If RECURSE is non-zero, also print one-line descriptions | |
935 | of all prefixed subcommands. */ | |
936 | static void | |
937 | print_help_for_command (struct cmd_list_element *c, char *prefix, int recurse, | |
938 | struct ui_file *stream) | |
939 | { | |
940 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
941 | print_doc_line (stream, c->doc); | |
942 | fputs_filtered ("\n", stream); | |
943 | ||
944 | if (recurse | |
945 | && c->prefixlist != 0 | |
946 | && c->abbrev_flag == 0) | |
947 | /* Subcommands of a prefix command typically have 'all_commands' | |
948 | as class. If we pass CLASS to recursive invocation, | |
949 | most often we won't see anything. */ | |
950 | help_cmd_list (*c->prefixlist, all_commands, c->prefixname, 1, stream); | |
951 | } | |
952 | ||
c906108c SS |
953 | /* |
954 | * Implement a help command on command list LIST. | |
955 | * RECURSE should be non-zero if this should be done recursively on | |
956 | * all sublists of LIST. | |
957 | * PREFIX is the prefix to print before each command name. | |
958 | * STREAM is the stream upon which the output should be written. | |
959 | * CLASS should be: | |
c5aa993b | 960 | * A non-negative class number to list only commands in that |
c906108c | 961 | * class. |
c5aa993b JM |
962 | * ALL_COMMANDS to list all commands in list. |
963 | * ALL_CLASSES to list all classes in list. | |
c906108c SS |
964 | * |
965 | * Note that RECURSE will be active on *all* sublists, not just the | |
966 | * ones selected by the criteria above (ie. the selection mechanism | |
967 | * is at the low level, not the high-level). | |
968 | */ | |
969 | void | |
fba45db2 KB |
970 | help_cmd_list (struct cmd_list_element *list, enum command_class class, |
971 | char *prefix, int recurse, struct ui_file *stream) | |
c906108c | 972 | { |
d5b5ac79 | 973 | struct cmd_list_element *c; |
c906108c SS |
974 | |
975 | for (c = list; c; c = c->next) | |
6e381ba0 | 976 | { |
c906108c SS |
977 | if (c->abbrev_flag == 0 && |
978 | (class == all_commands | |
9f60d481 AC |
979 | || (class == all_classes && c->func == NULL) |
980 | || (class == c->class && c->func != NULL))) | |
c906108c | 981 | { |
6e381ba0 | 982 | print_help_for_command (c, prefix, recurse, stream); |
c906108c | 983 | } |
c906108c SS |
984 | } |
985 | } | |
c906108c | 986 | \f |
c5aa993b | 987 | |
c906108c SS |
988 | /* Search the input clist for 'command'. Return the command if |
989 | found (or NULL if not), and return the number of commands | |
990 | found in nfound */ | |
991 | ||
992 | static struct cmd_list_element * | |
fba45db2 KB |
993 | find_cmd (char *command, int len, struct cmd_list_element *clist, |
994 | int ignore_help_classes, int *nfound) | |
c906108c SS |
995 | { |
996 | struct cmd_list_element *found, *c; | |
997 | ||
c5aa993b | 998 | found = (struct cmd_list_element *) NULL; |
c906108c SS |
999 | *nfound = 0; |
1000 | for (c = clist; c; c = c->next) | |
1001 | if (!strncmp (command, c->name, len) | |
9f60d481 | 1002 | && (!ignore_help_classes || c->func)) |
c906108c | 1003 | { |
c5aa993b JM |
1004 | found = c; |
1005 | (*nfound)++; | |
1006 | if (c->name[len] == '\0') | |
1007 | { | |
1008 | *nfound = 1; | |
1009 | break; | |
1010 | } | |
c906108c SS |
1011 | } |
1012 | return found; | |
1013 | } | |
1014 | ||
3386243e AS |
1015 | static int |
1016 | find_command_name_length (const char *text) | |
1017 | { | |
1018 | const char *p = text; | |
1019 | ||
1020 | /* Treating underscores as part of command words is important | |
1021 | so that "set args_foo()" doesn't get interpreted as | |
1022 | "set args _foo()". */ | |
1023 | /* Some characters are only used for TUI specific commands. However, they | |
1024 | are always allowed for the sake of consistency. | |
1025 | The XDB compatibility characters are only allowed when using the right | |
1026 | mode because they clash with other GDB commands - specifically '/' is | |
1027 | used as a suffix for print, examine and display. | |
1028 | Note that this is larger than the character set allowed when creating | |
1029 | user-defined commands. */ | |
1030 | while (isalnum (*p) || *p == '-' || *p == '_' || | |
1031 | /* Characters used by TUI specific commands. */ | |
1032 | *p == '+' || *p == '<' || *p == '>' || *p == '$' || | |
1033 | /* Characters used for XDB compatibility. */ | |
1034 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))) | |
1035 | p++; | |
1036 | ||
1037 | return p - text; | |
1038 | } | |
1039 | ||
c906108c SS |
1040 | /* This routine takes a line of TEXT and a CLIST in which to start the |
1041 | lookup. When it returns it will have incremented the text pointer past | |
1042 | the section of text it matched, set *RESULT_LIST to point to the list in | |
1043 | which the last word was matched, and will return a pointer to the cmd | |
1044 | list element which the text matches. It will return NULL if no match at | |
1045 | all was possible. It will return -1 (cast appropriately, ick) if ambigous | |
1046 | matches are possible; in this case *RESULT_LIST will be set to point to | |
1047 | the list in which there are ambiguous choices (and *TEXT will be set to | |
1048 | the ambiguous text string). | |
1049 | ||
1050 | If the located command was an abbreviation, this routine returns the base | |
1051 | command of the abbreviation. | |
1052 | ||
1053 | It does no error reporting whatsoever; control will always return | |
1054 | to the superior routine. | |
1055 | ||
1056 | In the case of an ambiguous return (-1), *RESULT_LIST will be set to point | |
1057 | at the prefix_command (ie. the best match) *or* (special case) will be NULL | |
1058 | if no prefix command was ever found. For example, in the case of "info a", | |
1059 | "info" matches without ambiguity, but "a" could be "args" or "address", so | |
1060 | *RESULT_LIST is set to the cmd_list_element for "info". So in this case | |
1061 | RESULT_LIST should not be interpeted as a pointer to the beginning of a | |
1062 | list; it simply points to a specific command. In the case of an ambiguous | |
1063 | return *TEXT is advanced past the last non-ambiguous prefix (e.g. | |
1064 | "info t" can be "info types" or "info target"; upon return *TEXT has been | |
1065 | advanced past "info "). | |
1066 | ||
1067 | If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise | |
1068 | affect the operation). | |
1069 | ||
1070 | This routine does *not* modify the text pointed to by TEXT. | |
c5aa993b | 1071 | |
c906108c SS |
1072 | If IGNORE_HELP_CLASSES is nonzero, ignore any command list elements which |
1073 | are actually help classes rather than commands (i.e. the function field of | |
1074 | the struct cmd_list_element is NULL). */ | |
1075 | ||
1076 | struct cmd_list_element * | |
fba45db2 KB |
1077 | lookup_cmd_1 (char **text, struct cmd_list_element *clist, |
1078 | struct cmd_list_element **result_list, int ignore_help_classes) | |
c906108c | 1079 | { |
3386243e | 1080 | char *command; |
c906108c SS |
1081 | int len, tmp, nfound; |
1082 | struct cmd_list_element *found, *c; | |
56382845 | 1083 | char *line = *text; |
c906108c SS |
1084 | |
1085 | while (**text == ' ' || **text == '\t') | |
1086 | (*text)++; | |
1087 | ||
3386243e AS |
1088 | /* Identify the name of the command. */ |
1089 | len = find_command_name_length (*text); | |
c906108c SS |
1090 | |
1091 | /* If nothing but whitespace, return 0. */ | |
3386243e | 1092 | if (len == 0) |
c906108c | 1093 | return 0; |
c5aa993b | 1094 | |
c906108c SS |
1095 | /* *text and p now bracket the first command word to lookup (and |
1096 | it's length is len). We copy this into a local temporary */ | |
1097 | ||
1098 | ||
1099 | command = (char *) alloca (len + 1); | |
1100 | for (tmp = 0; tmp < len; tmp++) | |
1101 | { | |
1102 | char x = (*text)[tmp]; | |
1103 | command[tmp] = x; | |
1104 | } | |
1105 | command[len] = '\0'; | |
1106 | ||
1107 | /* Look it up. */ | |
1108 | found = 0; | |
1109 | nfound = 0; | |
c5aa993b | 1110 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); |
c906108c SS |
1111 | |
1112 | /* | |
c5aa993b JM |
1113 | ** We didn't find the command in the entered case, so lower case it |
1114 | ** and search again. | |
1115 | */ | |
c906108c SS |
1116 | if (!found || nfound == 0) |
1117 | { | |
1118 | for (tmp = 0; tmp < len; tmp++) | |
c5aa993b JM |
1119 | { |
1120 | char x = command[tmp]; | |
1121 | command[tmp] = isupper (x) ? tolower (x) : x; | |
1122 | } | |
1123 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); | |
c906108c SS |
1124 | } |
1125 | ||
1126 | /* If nothing matches, we have a simple failure. */ | |
1127 | if (nfound == 0) | |
1128 | return 0; | |
1129 | ||
1130 | if (nfound > 1) | |
1131 | { | |
1132 | if (result_list != NULL) | |
1133 | /* Will be modified in calling routine | |
1134 | if we know what the prefix command is. */ | |
c5aa993b JM |
1135 | *result_list = 0; |
1136 | return (struct cmd_list_element *) -1; /* Ambiguous. */ | |
c906108c SS |
1137 | } |
1138 | ||
1139 | /* We've matched something on this list. Move text pointer forward. */ | |
1140 | ||
3386243e | 1141 | *text += len; |
c906108c | 1142 | |
c906108c | 1143 | if (found->cmd_pointer) |
56382845 FN |
1144 | { |
1145 | /* We drop the alias (abbreviation) in favor of the command it is | |
1146 | pointing to. If the alias is deprecated, though, we need to | |
1147 | warn the user about it before we drop it. Note that while we | |
1148 | are warning about the alias, we may also warn about the command | |
1149 | itself and we will adjust the appropriate DEPRECATED_WARN_USER | |
1150 | flags */ | |
1151 | ||
1152 | if (found->flags & DEPRECATED_WARN_USER) | |
1153 | deprecated_cmd_warning (&line); | |
1154 | found = found->cmd_pointer; | |
1155 | } | |
c906108c SS |
1156 | /* If we found a prefix command, keep looking. */ |
1157 | ||
1158 | if (found->prefixlist) | |
1159 | { | |
1160 | c = lookup_cmd_1 (text, *found->prefixlist, result_list, | |
1161 | ignore_help_classes); | |
1162 | if (!c) | |
1163 | { | |
1164 | /* Didn't find anything; this is as far as we got. */ | |
1165 | if (result_list != NULL) | |
1166 | *result_list = clist; | |
1167 | return found; | |
1168 | } | |
1169 | else if (c == (struct cmd_list_element *) -1) | |
1170 | { | |
1171 | /* We've gotten this far properly, but the next step | |
1172 | is ambiguous. We need to set the result list to the best | |
1173 | we've found (if an inferior hasn't already set it). */ | |
1174 | if (result_list != NULL) | |
1175 | if (!*result_list) | |
1176 | /* This used to say *result_list = *found->prefixlist | |
c5aa993b JM |
1177 | If that was correct, need to modify the documentation |
1178 | at the top of this function to clarify what is supposed | |
1179 | to be going on. */ | |
c906108c SS |
1180 | *result_list = found; |
1181 | return c; | |
1182 | } | |
1183 | else | |
1184 | { | |
1185 | /* We matched! */ | |
1186 | return c; | |
1187 | } | |
1188 | } | |
1189 | else | |
1190 | { | |
1191 | if (result_list != NULL) | |
1192 | *result_list = clist; | |
1193 | return found; | |
1194 | } | |
1195 | } | |
1196 | ||
1197 | /* All this hair to move the space to the front of cmdtype */ | |
1198 | ||
1199 | static void | |
fba45db2 | 1200 | undef_cmd_error (char *cmdtype, char *q) |
c906108c | 1201 | { |
8a3fe4f8 | 1202 | error (_("Undefined %scommand: \"%s\". Try \"help%s%.*s\"."), |
c5aa993b JM |
1203 | cmdtype, |
1204 | q, | |
1205 | *cmdtype ? " " : "", | |
823ca731 | 1206 | (int) strlen (cmdtype) - 1, |
c5aa993b | 1207 | cmdtype); |
c906108c SS |
1208 | } |
1209 | ||
1210 | /* Look up the contents of *LINE as a command in the command list LIST. | |
1211 | LIST is a chain of struct cmd_list_element's. | |
1212 | If it is found, return the struct cmd_list_element for that command | |
1213 | and update *LINE to point after the command name, at the first argument. | |
1214 | If not found, call error if ALLOW_UNKNOWN is zero | |
1215 | otherwise (or if error returns) return zero. | |
1216 | Call error if specified command is ambiguous, | |
1217 | unless ALLOW_UNKNOWN is negative. | |
1218 | CMDTYPE precedes the word "command" in the error message. | |
1219 | ||
1220 | If INGNORE_HELP_CLASSES is nonzero, ignore any command list | |
1221 | elements which are actually help classes rather than commands (i.e. | |
1222 | the function field of the struct cmd_list_element is 0). */ | |
1223 | ||
1224 | struct cmd_list_element * | |
fba45db2 KB |
1225 | lookup_cmd (char **line, struct cmd_list_element *list, char *cmdtype, |
1226 | int allow_unknown, int ignore_help_classes) | |
c906108c SS |
1227 | { |
1228 | struct cmd_list_element *last_list = 0; | |
3cebf8d8 | 1229 | struct cmd_list_element *c; |
c64601c7 FN |
1230 | |
1231 | /* Note: Do not remove trailing whitespace here because this | |
1232 | would be wrong for complete_command. Jim Kingdon */ | |
c5aa993b | 1233 | |
3cebf8d8 MS |
1234 | if (!*line) |
1235 | error (_("Lack of needed %scommand"), cmdtype); | |
1236 | ||
1237 | c = lookup_cmd_1 (line, list, &last_list, ignore_help_classes); | |
1238 | ||
c906108c SS |
1239 | if (!c) |
1240 | { | |
1241 | if (!allow_unknown) | |
1242 | { | |
3cebf8d8 MS |
1243 | char *q; |
1244 | int len = find_command_name_length (*line); | |
c906108c | 1245 | |
3cebf8d8 MS |
1246 | q = (char *) alloca (len + 1); |
1247 | strncpy (q, *line, len); | |
1248 | q[len] = '\0'; | |
1249 | undef_cmd_error (cmdtype, q); | |
c906108c SS |
1250 | } |
1251 | else | |
1252 | return 0; | |
1253 | } | |
1254 | else if (c == (struct cmd_list_element *) -1) | |
1255 | { | |
1256 | /* Ambigous. Local values should be off prefixlist or called | |
c5aa993b | 1257 | values. */ |
c906108c SS |
1258 | int local_allow_unknown = (last_list ? last_list->allow_unknown : |
1259 | allow_unknown); | |
1260 | char *local_cmdtype = last_list ? last_list->prefixname : cmdtype; | |
1261 | struct cmd_list_element *local_list = | |
c5aa993b JM |
1262 | (last_list ? *(last_list->prefixlist) : list); |
1263 | ||
c906108c SS |
1264 | if (local_allow_unknown < 0) |
1265 | { | |
1266 | if (last_list) | |
1267 | return last_list; /* Found something. */ | |
1268 | else | |
1269 | return 0; /* Found nothing. */ | |
1270 | } | |
1271 | else | |
1272 | { | |
1273 | /* Report as error. */ | |
1274 | int amb_len; | |
1275 | char ambbuf[100]; | |
1276 | ||
1277 | for (amb_len = 0; | |
1278 | ((*line)[amb_len] && (*line)[amb_len] != ' ' | |
1279 | && (*line)[amb_len] != '\t'); | |
1280 | amb_len++) | |
1281 | ; | |
c5aa993b | 1282 | |
c906108c SS |
1283 | ambbuf[0] = 0; |
1284 | for (c = local_list; c; c = c->next) | |
1285 | if (!strncmp (*line, c->name, amb_len)) | |
1286 | { | |
c5aa993b | 1287 | if (strlen (ambbuf) + strlen (c->name) + 6 < (int) sizeof ambbuf) |
c906108c SS |
1288 | { |
1289 | if (strlen (ambbuf)) | |
1290 | strcat (ambbuf, ", "); | |
1291 | strcat (ambbuf, c->name); | |
1292 | } | |
1293 | else | |
1294 | { | |
1295 | strcat (ambbuf, ".."); | |
1296 | break; | |
1297 | } | |
1298 | } | |
8a3fe4f8 | 1299 | error (_("Ambiguous %scommand \"%s\": %s."), local_cmdtype, |
c906108c SS |
1300 | *line, ambbuf); |
1301 | return 0; /* lint */ | |
1302 | } | |
1303 | } | |
1304 | else | |
1305 | { | |
1306 | /* We've got something. It may still not be what the caller | |
1307 | wants (if this command *needs* a subcommand). */ | |
1308 | while (**line == ' ' || **line == '\t') | |
1309 | (*line)++; | |
1310 | ||
1311 | if (c->prefixlist && **line && !c->allow_unknown) | |
1312 | undef_cmd_error (c->prefixname, *line); | |
1313 | ||
1314 | /* Seems to be what he wants. Return it. */ | |
1315 | return c; | |
1316 | } | |
1317 | return 0; | |
1318 | } | |
c5aa993b | 1319 | |
56382845 FN |
1320 | /* We are here presumably because an alias or command in *TEXT is |
1321 | deprecated and a warning message should be generated. This function | |
1322 | decodes *TEXT and potentially generates a warning message as outlined | |
1323 | below. | |
1324 | ||
1325 | Example for 'set endian big' which has a fictitious alias 'seb'. | |
1326 | ||
1327 | If alias wasn't used in *TEXT, and the command is deprecated: | |
1328 | "warning: 'set endian big' is deprecated." | |
1329 | ||
1330 | If alias was used, and only the alias is deprecated: | |
1331 | "warning: 'seb' an alias for the command 'set endian big' is deprecated." | |
1332 | ||
1333 | If alias was used and command is deprecated (regardless of whether the | |
1334 | alias itself is deprecated: | |
1335 | ||
1336 | "warning: 'set endian big' (seb) is deprecated." | |
1337 | ||
1338 | After the message has been sent, clear the appropriate flags in the | |
1339 | command and/or the alias so the user is no longer bothered. | |
1340 | ||
1341 | */ | |
1342 | void | |
1343 | deprecated_cmd_warning (char **text) | |
1344 | { | |
1345 | struct cmd_list_element *alias = NULL; | |
1346 | struct cmd_list_element *prefix_cmd = NULL; | |
1347 | struct cmd_list_element *cmd = NULL; | |
1348 | struct cmd_list_element *c; | |
1349 | char *type; | |
edefbb7c | 1350 | |
56382845 FN |
1351 | if (!lookup_cmd_composition (*text, &alias, &prefix_cmd, &cmd)) |
1352 | /* return if text doesn't evaluate to a command */ | |
1353 | return; | |
1354 | ||
1355 | if (!((alias ? (alias->flags & DEPRECATED_WARN_USER) : 0) | |
1356 | || (cmd->flags & DEPRECATED_WARN_USER) ) ) | |
1357 | /* return if nothing is deprecated */ | |
1358 | return; | |
1359 | ||
1360 | printf_filtered ("Warning:"); | |
1361 | ||
1362 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1363 | printf_filtered (" '%s', an alias for the", alias->name); | |
1364 | ||
1365 | printf_filtered (" command '"); | |
1366 | ||
1367 | if (prefix_cmd) | |
1368 | printf_filtered ("%s", prefix_cmd->prefixname); | |
1369 | ||
1370 | printf_filtered ("%s", cmd->name); | |
1371 | ||
1372 | if (alias && (cmd->flags & CMD_DEPRECATED)) | |
1373 | printf_filtered ("' (%s) is deprecated.\n", alias->name); | |
1374 | else | |
1375 | printf_filtered ("' is deprecated.\n"); | |
1376 | ||
1377 | ||
1378 | /* if it is only the alias that is deprecated, we want to indicate the | |
1379 | new alias, otherwise we'll indicate the new command */ | |
1380 | ||
1381 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1382 | { | |
1383 | if (alias->replacement) | |
1384 | printf_filtered ("Use '%s'.\n\n", alias->replacement); | |
1385 | else | |
1386 | printf_filtered ("No alternative known.\n\n"); | |
1387 | } | |
1388 | else | |
1389 | { | |
1390 | if (cmd->replacement) | |
1391 | printf_filtered ("Use '%s'.\n\n", cmd->replacement); | |
1392 | else | |
1393 | printf_filtered ("No alternative known.\n\n"); | |
1394 | } | |
1395 | ||
1396 | /* We've warned you, now we'll keep quiet */ | |
1397 | if (alias) | |
1398 | alias->flags &= ~DEPRECATED_WARN_USER; | |
1399 | ||
1400 | cmd->flags &= ~DEPRECATED_WARN_USER; | |
1401 | } | |
1402 | ||
1403 | ||
1404 | ||
1405 | /* Look up the contents of LINE as a command in the command list 'cmdlist'. | |
1406 | Return 1 on success, 0 on failure. | |
1407 | ||
1408 | If LINE refers to an alias, *alias will point to that alias. | |
1409 | ||
1410 | If LINE is a postfix command (i.e. one that is preceeded by a prefix | |
1411 | command) set *prefix_cmd. | |
1412 | ||
1413 | Set *cmd to point to the command LINE indicates. | |
1414 | ||
1415 | If any of *alias, *prefix_cmd, or *cmd cannot be determined or do not | |
1416 | exist, they are NULL when we return. | |
1417 | ||
1418 | */ | |
1419 | int | |
1420 | lookup_cmd_composition (char *text, | |
1421 | struct cmd_list_element **alias, | |
1422 | struct cmd_list_element **prefix_cmd, | |
1423 | struct cmd_list_element **cmd) | |
1424 | { | |
3386243e | 1425 | char *command; |
56382845 FN |
1426 | int len, tmp, nfound; |
1427 | struct cmd_list_element *cur_list; | |
1428 | struct cmd_list_element *prev_cmd; | |
1429 | *alias = NULL; | |
1430 | *prefix_cmd = NULL; | |
1431 | *cmd = NULL; | |
1432 | ||
1433 | cur_list = cmdlist; | |
1434 | ||
1435 | while (1) | |
1436 | { | |
1437 | /* Go through as many command lists as we need to | |
1438 | to find the command TEXT refers to. */ | |
1439 | ||
1440 | prev_cmd = *cmd; | |
1441 | ||
1442 | while (*text == ' ' || *text == '\t') | |
1443 | (text)++; | |
1444 | ||
3386243e AS |
1445 | /* Identify the name of the command. */ |
1446 | len = find_command_name_length (text); | |
56382845 FN |
1447 | |
1448 | /* If nothing but whitespace, return. */ | |
3386243e AS |
1449 | if (len == 0) |
1450 | return 0; | |
56382845 | 1451 | |
3386243e | 1452 | /* text is the start of the first command word to lookup (and |
56382845 FN |
1453 | it's length is len). We copy this into a local temporary */ |
1454 | ||
1455 | command = (char *) alloca (len + 1); | |
1456 | for (tmp = 0; tmp < len; tmp++) | |
1457 | { | |
1458 | char x = text[tmp]; | |
1459 | command[tmp] = x; | |
1460 | } | |
1461 | command[len] = '\0'; | |
1462 | ||
1463 | /* Look it up. */ | |
1464 | *cmd = 0; | |
1465 | nfound = 0; | |
1466 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1467 | ||
1468 | /* We didn't find the command in the entered case, so lower case it | |
1469 | and search again. | |
1470 | */ | |
1471 | if (!*cmd || nfound == 0) | |
1472 | { | |
1473 | for (tmp = 0; tmp < len; tmp++) | |
1474 | { | |
1475 | char x = command[tmp]; | |
1476 | command[tmp] = isupper (x) ? tolower (x) : x; | |
1477 | } | |
1478 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1479 | } | |
1480 | ||
1481 | if (*cmd == (struct cmd_list_element *) -1) | |
1482 | { | |
1483 | return 0; /* ambiguous */ | |
1484 | } | |
1485 | ||
1486 | if (*cmd == NULL) | |
1487 | return 0; /* nothing found */ | |
1488 | else | |
1489 | { | |
1490 | if ((*cmd)->cmd_pointer) | |
1491 | { | |
1492 | /* cmd was actually an alias, we note that an alias was used | |
1493 | (by assigning *alais) and we set *cmd. | |
1494 | */ | |
1495 | *alias = *cmd; | |
1496 | *cmd = (*cmd)->cmd_pointer; | |
1497 | } | |
1498 | *prefix_cmd = prev_cmd; | |
1499 | } | |
1500 | if ((*cmd)->prefixlist) | |
1501 | cur_list = *(*cmd)->prefixlist; | |
1502 | else | |
1503 | return 1; | |
1504 | ||
3386243e | 1505 | text += len; |
56382845 FN |
1506 | } |
1507 | } | |
1508 | ||
c906108c SS |
1509 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ |
1510 | ||
1511 | /* Return a vector of char pointers which point to the different | |
1512 | possible completions in LIST of TEXT. | |
1513 | ||
1514 | WORD points in the same buffer as TEXT, and completions should be | |
1515 | returned relative to this position. For example, suppose TEXT is "foo" | |
1516 | and we want to complete to "foobar". If WORD is "oo", return | |
1517 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1518 | ||
1519 | char ** | |
fba45db2 | 1520 | complete_on_cmdlist (struct cmd_list_element *list, char *text, char *word) |
c906108c SS |
1521 | { |
1522 | struct cmd_list_element *ptr; | |
1523 | char **matchlist; | |
1524 | int sizeof_matchlist; | |
1525 | int matches; | |
1526 | int textlen = strlen (text); | |
1527 | ||
1528 | sizeof_matchlist = 10; | |
1529 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1530 | matches = 0; | |
1531 | ||
1532 | for (ptr = list; ptr; ptr = ptr->next) | |
1533 | if (!strncmp (ptr->name, text, textlen) | |
1534 | && !ptr->abbrev_flag | |
9f60d481 | 1535 | && (ptr->func |
c906108c SS |
1536 | || ptr->prefixlist)) |
1537 | { | |
1538 | if (matches == sizeof_matchlist) | |
1539 | { | |
1540 | sizeof_matchlist *= 2; | |
c5aa993b | 1541 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1542 | (sizeof_matchlist |
1543 | * sizeof (char *))); | |
1544 | } | |
1545 | ||
c5aa993b | 1546 | matchlist[matches] = (char *) |
c906108c SS |
1547 | xmalloc (strlen (word) + strlen (ptr->name) + 1); |
1548 | if (word == text) | |
1549 | strcpy (matchlist[matches], ptr->name); | |
1550 | else if (word > text) | |
1551 | { | |
1552 | /* Return some portion of ptr->name. */ | |
1553 | strcpy (matchlist[matches], ptr->name + (word - text)); | |
1554 | } | |
1555 | else | |
1556 | { | |
1557 | /* Return some of text plus ptr->name. */ | |
1558 | strncpy (matchlist[matches], word, text - word); | |
1559 | matchlist[matches][text - word] = '\0'; | |
1560 | strcat (matchlist[matches], ptr->name); | |
1561 | } | |
1562 | ++matches; | |
1563 | } | |
1564 | ||
1565 | if (matches == 0) | |
1566 | { | |
b8c9b27d | 1567 | xfree (matchlist); |
c906108c SS |
1568 | matchlist = 0; |
1569 | } | |
1570 | else | |
1571 | { | |
c5aa993b JM |
1572 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1573 | * sizeof (char *))); | |
c906108c SS |
1574 | matchlist[matches] = (char *) 0; |
1575 | } | |
1576 | ||
1577 | return matchlist; | |
1578 | } | |
1579 | ||
1580 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
1581 | ||
1582 | /* Return a vector of char pointers which point to the different | |
1583 | possible completions in CMD of TEXT. | |
1584 | ||
1585 | WORD points in the same buffer as TEXT, and completions should be | |
1586 | returned relative to this position. For example, suppose TEXT is "foo" | |
1587 | and we want to complete to "foobar". If WORD is "oo", return | |
1588 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1589 | ||
1590 | char ** | |
53904c9e AC |
1591 | complete_on_enum (const char *enumlist[], |
1592 | char *text, | |
1593 | char *word) | |
c906108c SS |
1594 | { |
1595 | char **matchlist; | |
1596 | int sizeof_matchlist; | |
1597 | int matches; | |
1598 | int textlen = strlen (text); | |
1599 | int i; | |
53904c9e | 1600 | const char *name; |
c906108c SS |
1601 | |
1602 | sizeof_matchlist = 10; | |
1603 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1604 | matches = 0; | |
1605 | ||
1606 | for (i = 0; (name = enumlist[i]) != NULL; i++) | |
1607 | if (strncmp (name, text, textlen) == 0) | |
1608 | { | |
1609 | if (matches == sizeof_matchlist) | |
1610 | { | |
1611 | sizeof_matchlist *= 2; | |
c5aa993b | 1612 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1613 | (sizeof_matchlist |
1614 | * sizeof (char *))); | |
1615 | } | |
1616 | ||
c5aa993b | 1617 | matchlist[matches] = (char *) |
c906108c SS |
1618 | xmalloc (strlen (word) + strlen (name) + 1); |
1619 | if (word == text) | |
1620 | strcpy (matchlist[matches], name); | |
1621 | else if (word > text) | |
1622 | { | |
1623 | /* Return some portion of name. */ | |
1624 | strcpy (matchlist[matches], name + (word - text)); | |
1625 | } | |
1626 | else | |
1627 | { | |
1628 | /* Return some of text plus name. */ | |
1629 | strncpy (matchlist[matches], word, text - word); | |
1630 | matchlist[matches][text - word] = '\0'; | |
1631 | strcat (matchlist[matches], name); | |
1632 | } | |
1633 | ++matches; | |
1634 | } | |
1635 | ||
1636 | if (matches == 0) | |
1637 | { | |
b8c9b27d | 1638 | xfree (matchlist); |
c906108c SS |
1639 | matchlist = 0; |
1640 | } | |
1641 | else | |
1642 | { | |
c5aa993b JM |
1643 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1644 | * sizeof (char *))); | |
c906108c SS |
1645 | matchlist[matches] = (char *) 0; |
1646 | } | |
1647 | ||
1648 | return matchlist; | |
1649 | } | |
1650 | ||
f436dd25 MH |
1651 | |
1652 | /* check function pointer */ | |
1653 | int | |
1654 | cmd_func_p (struct cmd_list_element *cmd) | |
1655 | { | |
1656 | return (cmd->func != NULL); | |
1657 | } | |
1658 | ||
1659 | ||
1660 | /* call the command function */ | |
1661 | void | |
1662 | cmd_func (struct cmd_list_element *cmd, char *args, int from_tty) | |
1663 | { | |
1664 | if (cmd_func_p (cmd)) | |
1665 | (*cmd->func) (cmd, args, from_tty); | |
1666 | else | |
8a3fe4f8 | 1667 | error (_("Invalid command")); |
f436dd25 MH |
1668 | } |
1669 | ||
1670 |