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