Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Handle lists of commands, their decoding and documentation, for GDB. |
d9fcf2fb | 2 | Copyright 1986, 1989, 1990, 1991, 1998, 2000 Free Software Foundation, Inc. |
c906108c | 3 | |
c5aa993b JM |
4 | This program is free software; you can redistribute it and/or modify |
5 | it under the terms of the GNU General Public License as published by | |
6 | the Free Software Foundation; either version 2 of the License, or | |
7 | (at your option) any later version. | |
c906108c | 8 | |
c5aa993b JM |
9 | This program is distributed in the hope that it will be useful, |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
c906108c | 13 | |
c5aa993b JM |
14 | You should have received a copy of the GNU General Public License |
15 | along with this program; if not, write to the Free Software | |
16 | Foundation, Inc., 59 Temple Place - Suite 330, | |
17 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
18 | |
19 | #include "defs.h" | |
20 | #include "gdbcmd.h" | |
21 | #include "symtab.h" | |
22 | #include "value.h" | |
23 | #include <ctype.h> | |
24 | #include "gdb_string.h" | |
8b93c638 JM |
25 | #ifdef UI_OUT |
26 | #include "ui-out.h" | |
27 | #endif | |
c906108c | 28 | |
03f2053f | 29 | #include "gdb_wait.h" |
6837a0a2 | 30 | #include "gnu-regex.h" |
53a5351d JM |
31 | /* FIXME: this should be auto-configured! */ |
32 | #ifdef __MSDOS__ | |
33 | # define CANT_FORK | |
34 | #endif | |
35 | ||
c906108c SS |
36 | /* Prototypes for local functions */ |
37 | ||
a14ed312 | 38 | static void undef_cmd_error (char *, char *); |
c906108c | 39 | |
a14ed312 | 40 | static void show_user (char *, int); |
c906108c | 41 | |
d9fcf2fb | 42 | static void show_user_1 (struct cmd_list_element *, struct ui_file *); |
c906108c | 43 | |
a14ed312 | 44 | static void make_command (char *, int); |
c906108c | 45 | |
a14ed312 | 46 | static void shell_escape (char *, int); |
c906108c | 47 | |
a14ed312 | 48 | static int parse_binary_operation (char *); |
c906108c | 49 | |
d9fcf2fb | 50 | static void print_doc_line (struct ui_file *, char *); |
c906108c | 51 | |
a14ed312 KB |
52 | static struct cmd_list_element *find_cmd (char *command, |
53 | int len, | |
54 | struct cmd_list_element *clist, | |
55 | int ignore_help_classes, | |
56 | int *nfound); | |
6837a0a2 DB |
57 | static void apropos_cmd_helper (struct ui_file *, struct cmd_list_element *, |
58 | struct re_pattern_buffer *, char *); | |
59 | ||
c85871a3 AC |
60 | static void help_all (struct ui_file *stream); |
61 | ||
6837a0a2 | 62 | void apropos_command (char *, int); |
392a587b | 63 | |
a14ed312 | 64 | void _initialize_command (void); |
c906108c SS |
65 | |
66 | /* Add element named NAME. | |
67 | CLASS is the top level category into which commands are broken down | |
68 | for "help" purposes. | |
69 | FUN should be the function to execute the command; | |
70 | it will get a character string as argument, with leading | |
71 | and trailing blanks already eliminated. | |
72 | ||
73 | DOC is a documentation string for the command. | |
74 | Its first line should be a complete sentence. | |
75 | It should start with ? for a command that is an abbreviation | |
76 | or with * for a command that most users don't need to know about. | |
77 | ||
78 | Add this command to command list *LIST. | |
79 | ||
80 | Returns a pointer to the added command (not necessarily the head | |
81 | of *LIST). */ | |
82 | ||
83 | struct cmd_list_element * | |
af1c1752 KB |
84 | add_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
85 | char *doc, struct cmd_list_element **list) | |
c906108c SS |
86 | { |
87 | register struct cmd_list_element *c | |
c5aa993b | 88 | = (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); |
c906108c SS |
89 | struct cmd_list_element *p; |
90 | ||
91 | delete_cmd (name, list); | |
92 | ||
93 | if (*list == NULL || STRCMP ((*list)->name, name) >= 0) | |
94 | { | |
95 | c->next = *list; | |
96 | *list = c; | |
97 | } | |
98 | else | |
99 | { | |
100 | p = *list; | |
101 | while (p->next && STRCMP (p->next->name, name) <= 0) | |
c5aa993b JM |
102 | { |
103 | p = p->next; | |
104 | } | |
c906108c SS |
105 | c->next = p->next; |
106 | p->next = c; | |
107 | } | |
108 | ||
109 | c->name = name; | |
110 | c->class = class; | |
111 | c->function.cfunc = fun; | |
112 | c->doc = doc; | |
56382845 FN |
113 | c->flags = 0; |
114 | c->replacement = NULL; | |
c906108c SS |
115 | c->hook = NULL; |
116 | c->prefixlist = NULL; | |
117 | c->prefixname = NULL; | |
118 | c->allow_unknown = 0; | |
119 | c->abbrev_flag = 0; | |
120 | c->completer = make_symbol_completion_list; | |
121 | c->type = not_set_cmd; | |
122 | c->var = NULL; | |
123 | c->var_type = var_boolean; | |
124 | c->enums = NULL; | |
125 | c->user_commands = NULL; | |
126 | c->hookee = NULL; | |
127 | c->cmd_pointer = NULL; | |
128 | ||
129 | return c; | |
130 | } | |
131 | ||
56382845 FN |
132 | |
133 | /* Deprecates a command CMD. | |
134 | REPLACEMENT is the name of the command which should be used in place | |
135 | of this command, or NULL if no such command exists. | |
136 | ||
137 | This function does not check to see if command REPLACEMENT exists | |
138 | since gdb may not have gotten around to adding REPLACEMENT when this | |
139 | function is called. | |
140 | ||
141 | Returns a pointer to the deprecated command. */ | |
142 | ||
143 | struct cmd_list_element * | |
fba45db2 | 144 | deprecate_cmd (struct cmd_list_element *cmd, char *replacement) |
56382845 FN |
145 | { |
146 | cmd->flags |= (CMD_DEPRECATED | DEPRECATED_WARN_USER); | |
147 | ||
148 | if (replacement != NULL) | |
149 | cmd->replacement = replacement; | |
150 | else | |
151 | cmd->replacement = NULL; | |
152 | ||
153 | return cmd; | |
154 | } | |
155 | ||
156 | ||
c906108c SS |
157 | /* Same as above, except that the abbrev_flag is set. */ |
158 | ||
c5aa993b | 159 | #if 0 /* Currently unused */ |
c906108c SS |
160 | |
161 | struct cmd_list_element * | |
af1c1752 KB |
162 | add_abbrev_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
163 | char *doc, struct cmd_list_element **list) | |
c906108c SS |
164 | { |
165 | register struct cmd_list_element *c | |
c5aa993b | 166 | = add_cmd (name, class, fun, doc, list); |
c906108c SS |
167 | |
168 | c->abbrev_flag = 1; | |
169 | return c; | |
170 | } | |
171 | ||
172 | #endif | |
173 | ||
174 | struct cmd_list_element * | |
fba45db2 KB |
175 | add_alias_cmd (char *name, char *oldname, enum command_class class, |
176 | int abbrev_flag, struct cmd_list_element **list) | |
c906108c SS |
177 | { |
178 | /* Must do this since lookup_cmd tries to side-effect its first arg */ | |
179 | char *copied_name; | |
180 | register struct cmd_list_element *old; | |
181 | register struct cmd_list_element *c; | |
182 | copied_name = (char *) alloca (strlen (oldname) + 1); | |
183 | strcpy (copied_name, oldname); | |
c5aa993b | 184 | old = lookup_cmd (&copied_name, *list, "", 1, 1); |
c906108c SS |
185 | |
186 | if (old == 0) | |
187 | { | |
188 | delete_cmd (name, list); | |
189 | return 0; | |
190 | } | |
191 | ||
192 | c = add_cmd (name, class, old->function.cfunc, old->doc, list); | |
193 | c->prefixlist = old->prefixlist; | |
194 | c->prefixname = old->prefixname; | |
195 | c->allow_unknown = old->allow_unknown; | |
196 | c->abbrev_flag = abbrev_flag; | |
197 | c->cmd_pointer = old; | |
198 | return c; | |
199 | } | |
200 | ||
201 | /* Like add_cmd but adds an element for a command prefix: | |
202 | a name that should be followed by a subcommand to be looked up | |
203 | in another command list. PREFIXLIST should be the address | |
204 | of the variable containing that list. */ | |
205 | ||
206 | struct cmd_list_element * | |
af1c1752 KB |
207 | add_prefix_cmd (char *name, enum command_class class, void (*fun) (char *, int), |
208 | char *doc, struct cmd_list_element **prefixlist, | |
209 | char *prefixname, int allow_unknown, | |
210 | struct cmd_list_element **list) | |
c906108c SS |
211 | { |
212 | register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); | |
213 | c->prefixlist = prefixlist; | |
214 | c->prefixname = prefixname; | |
215 | c->allow_unknown = allow_unknown; | |
216 | return c; | |
217 | } | |
218 | ||
219 | /* Like add_prefix_cmd but sets the abbrev_flag on the new command. */ | |
c5aa993b | 220 | |
c906108c | 221 | struct cmd_list_element * |
af1c1752 KB |
222 | add_abbrev_prefix_cmd (char *name, enum command_class class, |
223 | void (*fun) (char *, int), char *doc, | |
224 | struct cmd_list_element **prefixlist, char *prefixname, | |
225 | int allow_unknown, struct cmd_list_element **list) | |
c906108c SS |
226 | { |
227 | register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); | |
228 | c->prefixlist = prefixlist; | |
229 | c->prefixname = prefixname; | |
230 | c->allow_unknown = allow_unknown; | |
231 | c->abbrev_flag = 1; | |
232 | return c; | |
233 | } | |
234 | ||
235 | /* This is an empty "cfunc". */ | |
236 | void | |
fba45db2 | 237 | not_just_help_class_command (char *args, int from_tty) |
c906108c SS |
238 | { |
239 | } | |
240 | ||
241 | /* This is an empty "sfunc". */ | |
a14ed312 | 242 | static void empty_sfunc (char *, int, struct cmd_list_element *); |
c906108c SS |
243 | |
244 | static void | |
fba45db2 | 245 | empty_sfunc (char *args, int from_tty, struct cmd_list_element *c) |
c906108c SS |
246 | { |
247 | } | |
248 | ||
249 | /* Add element named NAME to command list LIST (the list for set | |
250 | or some sublist thereof). | |
251 | CLASS is as in add_cmd. | |
252 | VAR_TYPE is the kind of thing we are setting. | |
253 | VAR is address of the variable being controlled by this command. | |
254 | DOC is the documentation string. */ | |
255 | ||
256 | struct cmd_list_element * | |
1ed2a135 AC |
257 | add_set_cmd (char *name, |
258 | enum command_class class, | |
259 | var_types var_type, | |
260 | void *var, | |
261 | char *doc, | |
262 | struct cmd_list_element **list) | |
c906108c SS |
263 | { |
264 | struct cmd_list_element *c | |
c5aa993b | 265 | = add_cmd (name, class, NO_FUNCTION, doc, list); |
c906108c SS |
266 | |
267 | c->type = set_cmd; | |
268 | c->var_type = var_type; | |
269 | c->var = var; | |
270 | /* This needs to be something besides NO_FUNCTION so that this isn't | |
271 | treated as a help class. */ | |
272 | c->function.sfunc = empty_sfunc; | |
273 | return c; | |
274 | } | |
275 | ||
276 | /* Add element named NAME to command list LIST (the list for set | |
277 | or some sublist thereof). | |
278 | CLASS is as in add_cmd. | |
279 | ENUMLIST is a list of strings which may follow NAME. | |
280 | VAR is address of the variable which will contain the matching string | |
c5aa993b | 281 | (from ENUMLIST). |
c906108c SS |
282 | DOC is the documentation string. */ |
283 | ||
284 | struct cmd_list_element * | |
1ed2a135 AC |
285 | add_set_enum_cmd (char *name, |
286 | enum command_class class, | |
53904c9e AC |
287 | const char *enumlist[], |
288 | const char **var, | |
1ed2a135 AC |
289 | char *doc, |
290 | struct cmd_list_element **list) | |
c906108c SS |
291 | { |
292 | struct cmd_list_element *c | |
c5aa993b | 293 | = add_set_cmd (name, class, var_enum, var, doc, list); |
c906108c SS |
294 | c->enums = enumlist; |
295 | ||
296 | return c; | |
297 | } | |
298 | ||
97c3646f AC |
299 | /* Add element named NAME to command list LIST (the list for set |
300 | or some sublist thereof). | |
301 | CLASS is as in add_cmd. | |
302 | VAR is address of the variable which will contain the value. | |
303 | DOC is the documentation string. */ | |
304 | struct cmd_list_element * | |
305 | add_set_auto_boolean_cmd (char *name, | |
306 | enum command_class class, | |
307 | enum cmd_auto_boolean *var, | |
308 | char *doc, | |
309 | struct cmd_list_element **list) | |
310 | { | |
311 | static const char *auto_boolean_enums[] = { "on", "off", "auto", NULL }; | |
312 | struct cmd_list_element *c; | |
313 | c = add_set_cmd (name, class, var_auto_boolean, var, doc, list); | |
314 | c->enums = auto_boolean_enums; | |
315 | return c; | |
316 | } | |
317 | ||
c906108c SS |
318 | /* Where SETCMD has already been added, add the corresponding show |
319 | command to LIST and return a pointer to the added command (not | |
320 | necessarily the head of LIST). */ | |
321 | struct cmd_list_element * | |
fba45db2 KB |
322 | add_show_from_set (struct cmd_list_element *setcmd, |
323 | struct cmd_list_element **list) | |
c906108c SS |
324 | { |
325 | struct cmd_list_element *showcmd = | |
c5aa993b | 326 | (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); |
c906108c SS |
327 | struct cmd_list_element *p; |
328 | ||
329 | memcpy (showcmd, setcmd, sizeof (struct cmd_list_element)); | |
330 | delete_cmd (showcmd->name, list); | |
331 | showcmd->type = show_cmd; | |
c5aa993b | 332 | |
c906108c SS |
333 | /* Replace "set " at start of docstring with "show ". */ |
334 | if (setcmd->doc[0] == 'S' && setcmd->doc[1] == 'e' | |
335 | && setcmd->doc[2] == 't' && setcmd->doc[3] == ' ') | |
336 | showcmd->doc = concat ("Show ", setcmd->doc + 4, NULL); | |
337 | else | |
338 | fprintf_unfiltered (gdb_stderr, "GDB internal error: Bad docstring for set command\n"); | |
c5aa993b JM |
339 | |
340 | if (*list == NULL || STRCMP ((*list)->name, showcmd->name) >= 0) | |
c906108c SS |
341 | { |
342 | showcmd->next = *list; | |
343 | *list = showcmd; | |
344 | } | |
345 | else | |
346 | { | |
347 | p = *list; | |
348 | while (p->next && STRCMP (p->next->name, showcmd->name) <= 0) | |
c5aa993b JM |
349 | { |
350 | p = p->next; | |
351 | } | |
c906108c SS |
352 | showcmd->next = p->next; |
353 | p->next = showcmd; | |
354 | } | |
355 | ||
356 | return showcmd; | |
357 | } | |
358 | ||
359 | /* Remove the command named NAME from the command list. */ | |
360 | ||
361 | void | |
fba45db2 | 362 | delete_cmd (char *name, struct cmd_list_element **list) |
c906108c SS |
363 | { |
364 | register struct cmd_list_element *c; | |
365 | struct cmd_list_element *p; | |
366 | ||
367 | while (*list && STREQ ((*list)->name, name)) | |
368 | { | |
369 | if ((*list)->hookee) | |
370 | (*list)->hookee->hook = 0; /* Hook slips out of its mouth */ | |
371 | p = (*list)->next; | |
c5aa993b | 372 | free ((PTR) * list); |
c906108c SS |
373 | *list = p; |
374 | } | |
375 | ||
376 | if (*list) | |
377 | for (c = *list; c->next;) | |
378 | { | |
379 | if (STREQ (c->next->name, name)) | |
380 | { | |
381 | if (c->next->hookee) | |
c5aa993b | 382 | c->next->hookee->hook = 0; /* hooked cmd gets away. */ |
c906108c | 383 | p = c->next->next; |
c5aa993b | 384 | free ((PTR) c->next); |
c906108c SS |
385 | c->next = p; |
386 | } | |
387 | else | |
388 | c = c->next; | |
389 | } | |
390 | } | |
6837a0a2 DB |
391 | /* Recursively walk the commandlist structures, and print out the |
392 | documentation of commands that match our regex in either their | |
393 | name, or their documentation. | |
394 | */ | |
395 | static void | |
396 | apropos_cmd_helper (struct ui_file *stream, struct cmd_list_element *commandlist, | |
397 | struct re_pattern_buffer *regex, char *prefix) | |
398 | { | |
399 | register struct cmd_list_element *c; | |
400 | int returnvalue=1; /*Needed to avoid double printing*/ | |
401 | /* Walk through the commands */ | |
402 | for (c=commandlist;c;c=c->next) | |
403 | { | |
404 | if (c->name != NULL) | |
405 | { | |
406 | /* Try to match against the name*/ | |
407 | returnvalue=re_search(regex,c->name,strlen(c->name),0,strlen(c->name),NULL); | |
408 | if (returnvalue >= 0) | |
409 | { | |
410 | /* Stolen from help_cmd_list. We don't directly use | |
411 | * help_cmd_list because it doesn't let us print out | |
412 | * single commands | |
413 | */ | |
414 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
415 | print_doc_line (stream, c->doc); | |
416 | fputs_filtered ("\n", stream); | |
417 | returnvalue=0; /*Set this so we don't print it again.*/ | |
418 | } | |
419 | } | |
420 | if (c->doc != NULL && returnvalue != 0) | |
421 | { | |
422 | /* Try to match against documentation */ | |
423 | if (re_search(regex,c->doc,strlen(c->doc),0,strlen(c->doc),NULL) >=0) | |
424 | { | |
425 | /* Stolen from help_cmd_list. We don't directly use | |
426 | * help_cmd_list because it doesn't let us print out | |
427 | * single commands | |
428 | */ | |
429 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
430 | print_doc_line (stream, c->doc); | |
431 | fputs_filtered ("\n", stream); | |
432 | } | |
433 | } | |
434 | /* Check if this command has subcommands */ | |
435 | if (c->prefixlist != NULL) | |
436 | { | |
437 | /* Recursively call ourselves on the subcommand list, | |
438 | passing the right prefix in. | |
439 | */ | |
440 | apropos_cmd_helper(stream,*c->prefixlist,regex,c->prefixname); | |
441 | } | |
442 | } | |
443 | } | |
444 | /* Search through names of commands and documentations for a certain | |
445 | regular expression. | |
446 | */ | |
447 | void | |
448 | apropos_command (char *searchstr, int from_tty) | |
449 | { | |
450 | extern struct cmd_list_element *cmdlist; /*This is the main command list*/ | |
451 | regex_t pattern; | |
452 | char *pattern_fastmap; | |
453 | char errorbuffer[512]; | |
454 | pattern_fastmap=calloc(256,sizeof(char)); | |
455 | if (searchstr == NULL) | |
456 | error("REGEXP string is empty"); | |
457 | ||
458 | if (regcomp(&pattern,searchstr,REG_ICASE) == 0) | |
459 | { | |
460 | pattern.fastmap=pattern_fastmap; | |
461 | re_compile_fastmap(&pattern); | |
462 | apropos_cmd_helper(gdb_stdout,cmdlist,&pattern,""); | |
463 | } | |
464 | else | |
465 | { | |
466 | regerror(regcomp(&pattern,searchstr,REG_ICASE),NULL,errorbuffer,512); | |
467 | error("Error in regular expression:%s",errorbuffer); | |
468 | } | |
469 | free(pattern_fastmap); | |
470 | } | |
471 | ||
c906108c SS |
472 | |
473 | /* This command really has to deal with two things: | |
474 | * 1) I want documentation on *this string* (usually called by | |
475 | * "help commandname"). | |
476 | * 2) I want documentation on *this list* (usually called by | |
477 | * giving a command that requires subcommands. Also called by saying | |
478 | * just "help".) | |
479 | * | |
480 | * I am going to split this into two seperate comamnds, help_cmd and | |
481 | * help_list. | |
482 | */ | |
483 | ||
484 | void | |
fba45db2 | 485 | help_cmd (char *command, struct ui_file *stream) |
c906108c SS |
486 | { |
487 | struct cmd_list_element *c; | |
488 | extern struct cmd_list_element *cmdlist; | |
489 | ||
490 | if (!command) | |
491 | { | |
492 | help_list (cmdlist, "", all_classes, stream); | |
493 | return; | |
494 | } | |
495 | ||
49a5a3a3 GM |
496 | if (strcmp (command, "all") == 0) |
497 | { | |
498 | help_all (stream); | |
499 | return; | |
500 | } | |
501 | ||
c906108c SS |
502 | c = lookup_cmd (&command, cmdlist, "", 0, 0); |
503 | ||
504 | if (c == 0) | |
505 | return; | |
506 | ||
507 | /* There are three cases here. | |
508 | If c->prefixlist is nonzero, we have a prefix command. | |
509 | Print its documentation, then list its subcommands. | |
c5aa993b | 510 | |
c906108c SS |
511 | If c->function is nonzero, we really have a command. |
512 | Print its documentation and return. | |
c5aa993b | 513 | |
c906108c SS |
514 | If c->function is zero, we have a class name. |
515 | Print its documentation (as if it were a command) | |
516 | and then set class to the number of this class | |
517 | so that the commands in the class will be listed. */ | |
518 | ||
519 | fputs_filtered (c->doc, stream); | |
520 | fputs_filtered ("\n", stream); | |
521 | ||
522 | if (c->prefixlist == 0 && c->function.cfunc != NULL) | |
523 | return; | |
524 | fprintf_filtered (stream, "\n"); | |
525 | ||
526 | /* If this is a prefix command, print it's subcommands */ | |
527 | if (c->prefixlist) | |
528 | help_list (*c->prefixlist, c->prefixname, all_commands, stream); | |
529 | ||
530 | /* If this is a class name, print all of the commands in the class */ | |
531 | if (c->function.cfunc == NULL) | |
532 | help_list (cmdlist, "", c->class, stream); | |
533 | ||
534 | if (c->hook) | |
535 | fprintf_filtered (stream, "\nThis command has a hook defined: %s\n", | |
536 | c->hook->name); | |
537 | } | |
538 | ||
539 | /* | |
540 | * Get a specific kind of help on a command list. | |
541 | * | |
542 | * LIST is the list. | |
543 | * CMDTYPE is the prefix to use in the title string. | |
544 | * CLASS is the class with which to list the nodes of this list (see | |
545 | * documentation for help_cmd_list below), As usual, ALL_COMMANDS for | |
546 | * everything, ALL_CLASSES for just classes, and non-negative for only things | |
547 | * in a specific class. | |
548 | * and STREAM is the output stream on which to print things. | |
549 | * If you call this routine with a class >= 0, it recurses. | |
550 | */ | |
551 | void | |
fba45db2 KB |
552 | help_list (struct cmd_list_element *list, char *cmdtype, |
553 | enum command_class class, struct ui_file *stream) | |
c906108c SS |
554 | { |
555 | int len; | |
556 | char *cmdtype1, *cmdtype2; | |
c5aa993b | 557 | |
c906108c SS |
558 | /* If CMDTYPE is "foo ", CMDTYPE1 gets " foo" and CMDTYPE2 gets "foo sub" */ |
559 | len = strlen (cmdtype); | |
560 | cmdtype1 = (char *) alloca (len + 1); | |
561 | cmdtype1[0] = 0; | |
562 | cmdtype2 = (char *) alloca (len + 4); | |
563 | cmdtype2[0] = 0; | |
564 | if (len) | |
565 | { | |
566 | cmdtype1[0] = ' '; | |
567 | strncpy (cmdtype1 + 1, cmdtype, len - 1); | |
568 | cmdtype1[len] = 0; | |
569 | strncpy (cmdtype2, cmdtype, len - 1); | |
570 | strcpy (cmdtype2 + len - 1, " sub"); | |
571 | } | |
572 | ||
573 | if (class == all_classes) | |
574 | fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2); | |
575 | else | |
576 | fprintf_filtered (stream, "List of %scommands:\n\n", cmdtype2); | |
577 | ||
c5aa993b | 578 | help_cmd_list (list, class, cmdtype, (int) class >= 0, stream); |
c906108c SS |
579 | |
580 | if (class == all_classes) | |
581 | fprintf_filtered (stream, "\n\ | |
582 | Type \"help%s\" followed by a class name for a list of commands in that class.", | |
c5aa993b | 583 | cmdtype1); |
c906108c SS |
584 | |
585 | fprintf_filtered (stream, "\n\ | |
586 | Type \"help%s\" followed by %scommand name for full documentation.\n\ | |
587 | Command name abbreviations are allowed if unambiguous.\n", | |
c5aa993b | 588 | cmdtype1, cmdtype2); |
c906108c | 589 | } |
c5aa993b | 590 | |
49a5a3a3 | 591 | static void |
c85871a3 | 592 | help_all (struct ui_file *stream) |
49a5a3a3 GM |
593 | { |
594 | struct cmd_list_element *c; | |
595 | extern struct cmd_list_element *cmdlist; | |
596 | ||
597 | for (c = cmdlist; c; c = c->next) | |
598 | { | |
599 | if (c->abbrev_flag) | |
600 | continue; | |
601 | /* If this is a prefix command, print it's subcommands */ | |
602 | if (c->prefixlist) | |
603 | help_cmd_list (*c->prefixlist, all_commands, c->prefixname, 0, stream); | |
604 | ||
605 | /* If this is a class name, print all of the commands in the class */ | |
606 | else if (c->function.cfunc == NULL) | |
607 | help_cmd_list (cmdlist, c->class, "", 0, stream); | |
608 | } | |
609 | } | |
610 | ||
c906108c SS |
611 | /* Print only the first line of STR on STREAM. */ |
612 | static void | |
fba45db2 | 613 | print_doc_line (struct ui_file *stream, char *str) |
c906108c SS |
614 | { |
615 | static char *line_buffer = 0; | |
616 | static int line_size; | |
617 | register char *p; | |
618 | ||
619 | if (!line_buffer) | |
620 | { | |
621 | line_size = 80; | |
622 | line_buffer = (char *) xmalloc (line_size); | |
623 | } | |
624 | ||
625 | p = str; | |
626 | while (*p && *p != '\n' && *p != '.' && *p != ',') | |
627 | p++; | |
628 | if (p - str > line_size - 1) | |
629 | { | |
630 | line_size = p - str + 1; | |
c5aa993b | 631 | free ((PTR) line_buffer); |
c906108c SS |
632 | line_buffer = (char *) xmalloc (line_size); |
633 | } | |
634 | strncpy (line_buffer, str, p - str); | |
635 | line_buffer[p - str] = '\0'; | |
636 | if (islower (line_buffer[0])) | |
637 | line_buffer[0] = toupper (line_buffer[0]); | |
8b93c638 JM |
638 | #ifdef UI_OUT |
639 | ui_out_text (uiout, line_buffer); | |
640 | #else | |
c906108c | 641 | fputs_filtered (line_buffer, stream); |
8b93c638 | 642 | #endif |
c906108c SS |
643 | } |
644 | ||
645 | /* | |
646 | * Implement a help command on command list LIST. | |
647 | * RECURSE should be non-zero if this should be done recursively on | |
648 | * all sublists of LIST. | |
649 | * PREFIX is the prefix to print before each command name. | |
650 | * STREAM is the stream upon which the output should be written. | |
651 | * CLASS should be: | |
c5aa993b | 652 | * A non-negative class number to list only commands in that |
c906108c | 653 | * class. |
c5aa993b JM |
654 | * ALL_COMMANDS to list all commands in list. |
655 | * ALL_CLASSES to list all classes in list. | |
c906108c SS |
656 | * |
657 | * Note that RECURSE will be active on *all* sublists, not just the | |
658 | * ones selected by the criteria above (ie. the selection mechanism | |
659 | * is at the low level, not the high-level). | |
660 | */ | |
661 | void | |
fba45db2 KB |
662 | help_cmd_list (struct cmd_list_element *list, enum command_class class, |
663 | char *prefix, int recurse, struct ui_file *stream) | |
c906108c SS |
664 | { |
665 | register struct cmd_list_element *c; | |
666 | ||
667 | for (c = list; c; c = c->next) | |
668 | { | |
669 | if (c->abbrev_flag == 0 && | |
670 | (class == all_commands | |
c5aa993b JM |
671 | || (class == all_classes && c->function.cfunc == NULL) |
672 | || (class == c->class && c->function.cfunc != NULL))) | |
c906108c SS |
673 | { |
674 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
675 | print_doc_line (stream, c->doc); | |
676 | fputs_filtered ("\n", stream); | |
677 | } | |
678 | if (recurse | |
679 | && c->prefixlist != 0 | |
680 | && c->abbrev_flag == 0) | |
681 | help_cmd_list (*c->prefixlist, class, c->prefixname, 1, stream); | |
682 | } | |
683 | } | |
c906108c | 684 | \f |
c5aa993b | 685 | |
c906108c SS |
686 | /* Search the input clist for 'command'. Return the command if |
687 | found (or NULL if not), and return the number of commands | |
688 | found in nfound */ | |
689 | ||
690 | static struct cmd_list_element * | |
fba45db2 KB |
691 | find_cmd (char *command, int len, struct cmd_list_element *clist, |
692 | int ignore_help_classes, int *nfound) | |
c906108c SS |
693 | { |
694 | struct cmd_list_element *found, *c; | |
695 | ||
c5aa993b | 696 | found = (struct cmd_list_element *) NULL; |
c906108c SS |
697 | *nfound = 0; |
698 | for (c = clist; c; c = c->next) | |
699 | if (!strncmp (command, c->name, len) | |
c5aa993b | 700 | && (!ignore_help_classes || c->function.cfunc)) |
c906108c | 701 | { |
c5aa993b JM |
702 | found = c; |
703 | (*nfound)++; | |
704 | if (c->name[len] == '\0') | |
705 | { | |
706 | *nfound = 1; | |
707 | break; | |
708 | } | |
c906108c SS |
709 | } |
710 | return found; | |
711 | } | |
712 | ||
713 | /* This routine takes a line of TEXT and a CLIST in which to start the | |
714 | lookup. When it returns it will have incremented the text pointer past | |
715 | the section of text it matched, set *RESULT_LIST to point to the list in | |
716 | which the last word was matched, and will return a pointer to the cmd | |
717 | list element which the text matches. It will return NULL if no match at | |
718 | all was possible. It will return -1 (cast appropriately, ick) if ambigous | |
719 | matches are possible; in this case *RESULT_LIST will be set to point to | |
720 | the list in which there are ambiguous choices (and *TEXT will be set to | |
721 | the ambiguous text string). | |
722 | ||
723 | If the located command was an abbreviation, this routine returns the base | |
724 | command of the abbreviation. | |
725 | ||
726 | It does no error reporting whatsoever; control will always return | |
727 | to the superior routine. | |
728 | ||
729 | In the case of an ambiguous return (-1), *RESULT_LIST will be set to point | |
730 | at the prefix_command (ie. the best match) *or* (special case) will be NULL | |
731 | if no prefix command was ever found. For example, in the case of "info a", | |
732 | "info" matches without ambiguity, but "a" could be "args" or "address", so | |
733 | *RESULT_LIST is set to the cmd_list_element for "info". So in this case | |
734 | RESULT_LIST should not be interpeted as a pointer to the beginning of a | |
735 | list; it simply points to a specific command. In the case of an ambiguous | |
736 | return *TEXT is advanced past the last non-ambiguous prefix (e.g. | |
737 | "info t" can be "info types" or "info target"; upon return *TEXT has been | |
738 | advanced past "info "). | |
739 | ||
740 | If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise | |
741 | affect the operation). | |
742 | ||
743 | This routine does *not* modify the text pointed to by TEXT. | |
c5aa993b | 744 | |
c906108c SS |
745 | If IGNORE_HELP_CLASSES is nonzero, ignore any command list elements which |
746 | are actually help classes rather than commands (i.e. the function field of | |
747 | the struct cmd_list_element is NULL). */ | |
748 | ||
749 | struct cmd_list_element * | |
fba45db2 KB |
750 | lookup_cmd_1 (char **text, struct cmd_list_element *clist, |
751 | struct cmd_list_element **result_list, int ignore_help_classes) | |
c906108c SS |
752 | { |
753 | char *p, *command; | |
754 | int len, tmp, nfound; | |
755 | struct cmd_list_element *found, *c; | |
56382845 | 756 | char *line = *text; |
c906108c SS |
757 | |
758 | while (**text == ' ' || **text == '\t') | |
759 | (*text)++; | |
760 | ||
761 | /* Treating underscores as part of command words is important | |
762 | so that "set args_foo()" doesn't get interpreted as | |
763 | "set args _foo()". */ | |
764 | for (p = *text; | |
c5aa993b | 765 | *p && (isalnum (*p) || *p == '-' || *p == '_' || |
c906108c SS |
766 | (tui_version && |
767 | (*p == '+' || *p == '<' || *p == '>' || *p == '$')) || | |
768 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))); | |
769 | p++) | |
770 | ; | |
771 | ||
772 | /* If nothing but whitespace, return 0. */ | |
773 | if (p == *text) | |
774 | return 0; | |
c5aa993b | 775 | |
c906108c SS |
776 | len = p - *text; |
777 | ||
778 | /* *text and p now bracket the first command word to lookup (and | |
779 | it's length is len). We copy this into a local temporary */ | |
780 | ||
781 | ||
782 | command = (char *) alloca (len + 1); | |
783 | for (tmp = 0; tmp < len; tmp++) | |
784 | { | |
785 | char x = (*text)[tmp]; | |
786 | command[tmp] = x; | |
787 | } | |
788 | command[len] = '\0'; | |
789 | ||
790 | /* Look it up. */ | |
791 | found = 0; | |
792 | nfound = 0; | |
c5aa993b | 793 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); |
c906108c SS |
794 | |
795 | /* | |
c5aa993b JM |
796 | ** We didn't find the command in the entered case, so lower case it |
797 | ** and search again. | |
798 | */ | |
c906108c SS |
799 | if (!found || nfound == 0) |
800 | { | |
801 | for (tmp = 0; tmp < len; tmp++) | |
c5aa993b JM |
802 | { |
803 | char x = command[tmp]; | |
804 | command[tmp] = isupper (x) ? tolower (x) : x; | |
805 | } | |
806 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); | |
c906108c SS |
807 | } |
808 | ||
809 | /* If nothing matches, we have a simple failure. */ | |
810 | if (nfound == 0) | |
811 | return 0; | |
812 | ||
813 | if (nfound > 1) | |
814 | { | |
815 | if (result_list != NULL) | |
816 | /* Will be modified in calling routine | |
817 | if we know what the prefix command is. */ | |
c5aa993b JM |
818 | *result_list = 0; |
819 | return (struct cmd_list_element *) -1; /* Ambiguous. */ | |
c906108c SS |
820 | } |
821 | ||
822 | /* We've matched something on this list. Move text pointer forward. */ | |
823 | ||
824 | *text = p; | |
825 | ||
c906108c | 826 | if (found->cmd_pointer) |
56382845 FN |
827 | { |
828 | /* We drop the alias (abbreviation) in favor of the command it is | |
829 | pointing to. If the alias is deprecated, though, we need to | |
830 | warn the user about it before we drop it. Note that while we | |
831 | are warning about the alias, we may also warn about the command | |
832 | itself and we will adjust the appropriate DEPRECATED_WARN_USER | |
833 | flags */ | |
834 | ||
835 | if (found->flags & DEPRECATED_WARN_USER) | |
836 | deprecated_cmd_warning (&line); | |
837 | found = found->cmd_pointer; | |
838 | } | |
c906108c SS |
839 | /* If we found a prefix command, keep looking. */ |
840 | ||
841 | if (found->prefixlist) | |
842 | { | |
843 | c = lookup_cmd_1 (text, *found->prefixlist, result_list, | |
844 | ignore_help_classes); | |
845 | if (!c) | |
846 | { | |
847 | /* Didn't find anything; this is as far as we got. */ | |
848 | if (result_list != NULL) | |
849 | *result_list = clist; | |
850 | return found; | |
851 | } | |
852 | else if (c == (struct cmd_list_element *) -1) | |
853 | { | |
854 | /* We've gotten this far properly, but the next step | |
855 | is ambiguous. We need to set the result list to the best | |
856 | we've found (if an inferior hasn't already set it). */ | |
857 | if (result_list != NULL) | |
858 | if (!*result_list) | |
859 | /* This used to say *result_list = *found->prefixlist | |
c5aa993b JM |
860 | If that was correct, need to modify the documentation |
861 | at the top of this function to clarify what is supposed | |
862 | to be going on. */ | |
c906108c SS |
863 | *result_list = found; |
864 | return c; | |
865 | } | |
866 | else | |
867 | { | |
868 | /* We matched! */ | |
869 | return c; | |
870 | } | |
871 | } | |
872 | else | |
873 | { | |
874 | if (result_list != NULL) | |
875 | *result_list = clist; | |
876 | return found; | |
877 | } | |
878 | } | |
879 | ||
880 | /* All this hair to move the space to the front of cmdtype */ | |
881 | ||
882 | static void | |
fba45db2 | 883 | undef_cmd_error (char *cmdtype, char *q) |
c906108c SS |
884 | { |
885 | error ("Undefined %scommand: \"%s\". Try \"help%s%.*s\".", | |
c5aa993b JM |
886 | cmdtype, |
887 | q, | |
888 | *cmdtype ? " " : "", | |
889 | strlen (cmdtype) - 1, | |
890 | cmdtype); | |
c906108c SS |
891 | } |
892 | ||
893 | /* Look up the contents of *LINE as a command in the command list LIST. | |
894 | LIST is a chain of struct cmd_list_element's. | |
895 | If it is found, return the struct cmd_list_element for that command | |
896 | and update *LINE to point after the command name, at the first argument. | |
897 | If not found, call error if ALLOW_UNKNOWN is zero | |
898 | otherwise (or if error returns) return zero. | |
899 | Call error if specified command is ambiguous, | |
900 | unless ALLOW_UNKNOWN is negative. | |
901 | CMDTYPE precedes the word "command" in the error message. | |
902 | ||
903 | If INGNORE_HELP_CLASSES is nonzero, ignore any command list | |
904 | elements which are actually help classes rather than commands (i.e. | |
905 | the function field of the struct cmd_list_element is 0). */ | |
906 | ||
907 | struct cmd_list_element * | |
fba45db2 KB |
908 | lookup_cmd (char **line, struct cmd_list_element *list, char *cmdtype, |
909 | int allow_unknown, int ignore_help_classes) | |
c906108c SS |
910 | { |
911 | struct cmd_list_element *last_list = 0; | |
912 | struct cmd_list_element *c = | |
c5aa993b | 913 | lookup_cmd_1 (line, list, &last_list, ignore_help_classes); |
c906108c SS |
914 | #if 0 |
915 | /* This is wrong for complete_command. */ | |
916 | char *ptr = (*line) + strlen (*line) - 1; | |
917 | ||
918 | /* Clear off trailing whitespace. */ | |
919 | while (ptr >= *line && (*ptr == ' ' || *ptr == '\t')) | |
920 | ptr--; | |
921 | *(ptr + 1) = '\0'; | |
922 | #endif | |
c5aa993b | 923 | |
c906108c SS |
924 | if (!c) |
925 | { | |
926 | if (!allow_unknown) | |
927 | { | |
928 | if (!*line) | |
929 | error ("Lack of needed %scommand", cmdtype); | |
930 | else | |
931 | { | |
932 | char *p = *line, *q; | |
933 | ||
c5aa993b | 934 | while (isalnum (*p) || *p == '-') |
c906108c SS |
935 | p++; |
936 | ||
937 | q = (char *) alloca (p - *line + 1); | |
938 | strncpy (q, *line, p - *line); | |
939 | q[p - *line] = '\0'; | |
940 | undef_cmd_error (cmdtype, q); | |
941 | } | |
942 | } | |
943 | else | |
944 | return 0; | |
945 | } | |
946 | else if (c == (struct cmd_list_element *) -1) | |
947 | { | |
948 | /* Ambigous. Local values should be off prefixlist or called | |
c5aa993b | 949 | values. */ |
c906108c SS |
950 | int local_allow_unknown = (last_list ? last_list->allow_unknown : |
951 | allow_unknown); | |
952 | char *local_cmdtype = last_list ? last_list->prefixname : cmdtype; | |
953 | struct cmd_list_element *local_list = | |
c5aa993b JM |
954 | (last_list ? *(last_list->prefixlist) : list); |
955 | ||
c906108c SS |
956 | if (local_allow_unknown < 0) |
957 | { | |
958 | if (last_list) | |
959 | return last_list; /* Found something. */ | |
960 | else | |
961 | return 0; /* Found nothing. */ | |
962 | } | |
963 | else | |
964 | { | |
965 | /* Report as error. */ | |
966 | int amb_len; | |
967 | char ambbuf[100]; | |
968 | ||
969 | for (amb_len = 0; | |
970 | ((*line)[amb_len] && (*line)[amb_len] != ' ' | |
971 | && (*line)[amb_len] != '\t'); | |
972 | amb_len++) | |
973 | ; | |
c5aa993b | 974 | |
c906108c SS |
975 | ambbuf[0] = 0; |
976 | for (c = local_list; c; c = c->next) | |
977 | if (!strncmp (*line, c->name, amb_len)) | |
978 | { | |
c5aa993b | 979 | if (strlen (ambbuf) + strlen (c->name) + 6 < (int) sizeof ambbuf) |
c906108c SS |
980 | { |
981 | if (strlen (ambbuf)) | |
982 | strcat (ambbuf, ", "); | |
983 | strcat (ambbuf, c->name); | |
984 | } | |
985 | else | |
986 | { | |
987 | strcat (ambbuf, ".."); | |
988 | break; | |
989 | } | |
990 | } | |
991 | error ("Ambiguous %scommand \"%s\": %s.", local_cmdtype, | |
992 | *line, ambbuf); | |
993 | return 0; /* lint */ | |
994 | } | |
995 | } | |
996 | else | |
997 | { | |
998 | /* We've got something. It may still not be what the caller | |
999 | wants (if this command *needs* a subcommand). */ | |
1000 | while (**line == ' ' || **line == '\t') | |
1001 | (*line)++; | |
1002 | ||
1003 | if (c->prefixlist && **line && !c->allow_unknown) | |
1004 | undef_cmd_error (c->prefixname, *line); | |
1005 | ||
1006 | /* Seems to be what he wants. Return it. */ | |
1007 | return c; | |
1008 | } | |
1009 | return 0; | |
1010 | } | |
c5aa993b | 1011 | |
56382845 FN |
1012 | /* We are here presumably because an alias or command in *TEXT is |
1013 | deprecated and a warning message should be generated. This function | |
1014 | decodes *TEXT and potentially generates a warning message as outlined | |
1015 | below. | |
1016 | ||
1017 | Example for 'set endian big' which has a fictitious alias 'seb'. | |
1018 | ||
1019 | If alias wasn't used in *TEXT, and the command is deprecated: | |
1020 | "warning: 'set endian big' is deprecated." | |
1021 | ||
1022 | If alias was used, and only the alias is deprecated: | |
1023 | "warning: 'seb' an alias for the command 'set endian big' is deprecated." | |
1024 | ||
1025 | If alias was used and command is deprecated (regardless of whether the | |
1026 | alias itself is deprecated: | |
1027 | ||
1028 | "warning: 'set endian big' (seb) is deprecated." | |
1029 | ||
1030 | After the message has been sent, clear the appropriate flags in the | |
1031 | command and/or the alias so the user is no longer bothered. | |
1032 | ||
1033 | */ | |
1034 | void | |
1035 | deprecated_cmd_warning (char **text) | |
1036 | { | |
1037 | struct cmd_list_element *alias = NULL; | |
1038 | struct cmd_list_element *prefix_cmd = NULL; | |
1039 | struct cmd_list_element *cmd = NULL; | |
1040 | struct cmd_list_element *c; | |
1041 | char *type; | |
1042 | ||
1043 | if (!lookup_cmd_composition (*text, &alias, &prefix_cmd, &cmd)) | |
1044 | /* return if text doesn't evaluate to a command */ | |
1045 | return; | |
1046 | ||
1047 | if (!((alias ? (alias->flags & DEPRECATED_WARN_USER) : 0) | |
1048 | || (cmd->flags & DEPRECATED_WARN_USER) ) ) | |
1049 | /* return if nothing is deprecated */ | |
1050 | return; | |
1051 | ||
1052 | printf_filtered ("Warning:"); | |
1053 | ||
1054 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1055 | printf_filtered (" '%s', an alias for the", alias->name); | |
1056 | ||
1057 | printf_filtered (" command '"); | |
1058 | ||
1059 | if (prefix_cmd) | |
1060 | printf_filtered ("%s", prefix_cmd->prefixname); | |
1061 | ||
1062 | printf_filtered ("%s", cmd->name); | |
1063 | ||
1064 | if (alias && (cmd->flags & CMD_DEPRECATED)) | |
1065 | printf_filtered ("' (%s) is deprecated.\n", alias->name); | |
1066 | else | |
1067 | printf_filtered ("' is deprecated.\n"); | |
1068 | ||
1069 | ||
1070 | /* if it is only the alias that is deprecated, we want to indicate the | |
1071 | new alias, otherwise we'll indicate the new command */ | |
1072 | ||
1073 | if (alias && !(cmd->flags & CMD_DEPRECATED)) | |
1074 | { | |
1075 | if (alias->replacement) | |
1076 | printf_filtered ("Use '%s'.\n\n", alias->replacement); | |
1077 | else | |
1078 | printf_filtered ("No alternative known.\n\n"); | |
1079 | } | |
1080 | else | |
1081 | { | |
1082 | if (cmd->replacement) | |
1083 | printf_filtered ("Use '%s'.\n\n", cmd->replacement); | |
1084 | else | |
1085 | printf_filtered ("No alternative known.\n\n"); | |
1086 | } | |
1087 | ||
1088 | /* We've warned you, now we'll keep quiet */ | |
1089 | if (alias) | |
1090 | alias->flags &= ~DEPRECATED_WARN_USER; | |
1091 | ||
1092 | cmd->flags &= ~DEPRECATED_WARN_USER; | |
1093 | } | |
1094 | ||
1095 | ||
1096 | ||
1097 | /* Look up the contents of LINE as a command in the command list 'cmdlist'. | |
1098 | Return 1 on success, 0 on failure. | |
1099 | ||
1100 | If LINE refers to an alias, *alias will point to that alias. | |
1101 | ||
1102 | If LINE is a postfix command (i.e. one that is preceeded by a prefix | |
1103 | command) set *prefix_cmd. | |
1104 | ||
1105 | Set *cmd to point to the command LINE indicates. | |
1106 | ||
1107 | If any of *alias, *prefix_cmd, or *cmd cannot be determined or do not | |
1108 | exist, they are NULL when we return. | |
1109 | ||
1110 | */ | |
1111 | int | |
1112 | lookup_cmd_composition (char *text, | |
1113 | struct cmd_list_element **alias, | |
1114 | struct cmd_list_element **prefix_cmd, | |
1115 | struct cmd_list_element **cmd) | |
1116 | { | |
1117 | char *p, *command; | |
1118 | int len, tmp, nfound; | |
1119 | struct cmd_list_element *cur_list; | |
1120 | struct cmd_list_element *prev_cmd; | |
1121 | *alias = NULL; | |
1122 | *prefix_cmd = NULL; | |
1123 | *cmd = NULL; | |
1124 | ||
1125 | cur_list = cmdlist; | |
1126 | ||
1127 | while (1) | |
1128 | { | |
1129 | /* Go through as many command lists as we need to | |
1130 | to find the command TEXT refers to. */ | |
1131 | ||
1132 | prev_cmd = *cmd; | |
1133 | ||
1134 | while (*text == ' ' || *text == '\t') | |
1135 | (text)++; | |
1136 | ||
1137 | /* Treating underscores as part of command words is important | |
1138 | so that "set args_foo()" doesn't get interpreted as | |
1139 | "set args _foo()". */ | |
1140 | for (p = text; | |
1141 | *p && (isalnum (*p) || *p == '-' || *p == '_' || | |
1142 | (tui_version && | |
1143 | (*p == '+' || *p == '<' || *p == '>' || *p == '$')) || | |
1144 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))); | |
1145 | p++) | |
1146 | ; | |
1147 | ||
1148 | /* If nothing but whitespace, return. */ | |
1149 | if (p == text) | |
1150 | return 0; | |
1151 | ||
1152 | len = p - text; | |
1153 | ||
1154 | /* text and p now bracket the first command word to lookup (and | |
1155 | it's length is len). We copy this into a local temporary */ | |
1156 | ||
1157 | command = (char *) alloca (len + 1); | |
1158 | for (tmp = 0; tmp < len; tmp++) | |
1159 | { | |
1160 | char x = text[tmp]; | |
1161 | command[tmp] = x; | |
1162 | } | |
1163 | command[len] = '\0'; | |
1164 | ||
1165 | /* Look it up. */ | |
1166 | *cmd = 0; | |
1167 | nfound = 0; | |
1168 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1169 | ||
1170 | /* We didn't find the command in the entered case, so lower case it | |
1171 | and search again. | |
1172 | */ | |
1173 | if (!*cmd || nfound == 0) | |
1174 | { | |
1175 | for (tmp = 0; tmp < len; tmp++) | |
1176 | { | |
1177 | char x = command[tmp]; | |
1178 | command[tmp] = isupper (x) ? tolower (x) : x; | |
1179 | } | |
1180 | *cmd = find_cmd (command, len, cur_list, 1, &nfound); | |
1181 | } | |
1182 | ||
1183 | if (*cmd == (struct cmd_list_element *) -1) | |
1184 | { | |
1185 | return 0; /* ambiguous */ | |
1186 | } | |
1187 | ||
1188 | if (*cmd == NULL) | |
1189 | return 0; /* nothing found */ | |
1190 | else | |
1191 | { | |
1192 | if ((*cmd)->cmd_pointer) | |
1193 | { | |
1194 | /* cmd was actually an alias, we note that an alias was used | |
1195 | (by assigning *alais) and we set *cmd. | |
1196 | */ | |
1197 | *alias = *cmd; | |
1198 | *cmd = (*cmd)->cmd_pointer; | |
1199 | } | |
1200 | *prefix_cmd = prev_cmd; | |
1201 | } | |
1202 | if ((*cmd)->prefixlist) | |
1203 | cur_list = *(*cmd)->prefixlist; | |
1204 | else | |
1205 | return 1; | |
1206 | ||
1207 | text = p; | |
1208 | } | |
1209 | } | |
1210 | ||
1211 | ||
1212 | ||
1213 | ||
c906108c SS |
1214 | #if 0 |
1215 | /* Look up the contents of *LINE as a command in the command list LIST. | |
1216 | LIST is a chain of struct cmd_list_element's. | |
1217 | If it is found, return the struct cmd_list_element for that command | |
1218 | and update *LINE to point after the command name, at the first argument. | |
1219 | If not found, call error if ALLOW_UNKNOWN is zero | |
1220 | otherwise (or if error returns) return zero. | |
1221 | Call error if specified command is ambiguous, | |
1222 | unless ALLOW_UNKNOWN is negative. | |
1223 | CMDTYPE precedes the word "command" in the error message. */ | |
1224 | ||
1225 | struct cmd_list_element * | |
fba45db2 KB |
1226 | lookup_cmd (char **line, struct cmd_list_element *list, char *cmdtype, |
1227 | int allow_unknown) | |
c906108c SS |
1228 | { |
1229 | register char *p; | |
1230 | register struct cmd_list_element *c, *found; | |
1231 | int nfound; | |
1232 | char ambbuf[100]; | |
1233 | char *processed_cmd; | |
1234 | int i, cmd_len; | |
1235 | ||
1236 | /* Skip leading whitespace. */ | |
1237 | ||
1238 | while (**line == ' ' || **line == '\t') | |
1239 | (*line)++; | |
1240 | ||
1241 | /* Clear out trailing whitespace. */ | |
1242 | ||
1243 | p = *line + strlen (*line); | |
1244 | while (p != *line && (p[-1] == ' ' || p[-1] == '\t')) | |
1245 | p--; | |
1246 | *p = 0; | |
1247 | ||
1248 | /* Find end of command name. */ | |
1249 | ||
1250 | p = *line; | |
c5aa993b | 1251 | while (*p == '-' || isalnum (*p)) |
c906108c SS |
1252 | p++; |
1253 | ||
1254 | /* Look up the command name. | |
1255 | If exact match, keep that. | |
1256 | Otherwise, take command abbreviated, if unique. Note that (in my | |
1257 | opinion) a null string does *not* indicate ambiguity; simply the | |
1258 | end of the argument. */ | |
1259 | ||
1260 | if (p == *line) | |
1261 | { | |
1262 | if (!allow_unknown) | |
1263 | error ("Lack of needed %scommand", cmdtype); | |
1264 | return 0; | |
1265 | } | |
c5aa993b | 1266 | |
c906108c SS |
1267 | /* Copy over to a local buffer, converting to lowercase on the way. |
1268 | This is in case the command being parsed is a subcommand which | |
1269 | doesn't match anything, and that's ok. We want the original | |
1270 | untouched for the routine of the original command. */ | |
c5aa993b | 1271 | |
c906108c SS |
1272 | processed_cmd = (char *) alloca (p - *line + 1); |
1273 | for (cmd_len = 0; cmd_len < p - *line; cmd_len++) | |
1274 | { | |
1275 | char x = (*line)[cmd_len]; | |
c5aa993b JM |
1276 | if (isupper (x)) |
1277 | processed_cmd[cmd_len] = tolower (x); | |
c906108c SS |
1278 | else |
1279 | processed_cmd[cmd_len] = x; | |
1280 | } | |
1281 | processed_cmd[cmd_len] = '\0'; | |
1282 | ||
1283 | /* Check all possibilities in the current command list. */ | |
1284 | found = 0; | |
1285 | nfound = 0; | |
1286 | for (c = list; c; c = c->next) | |
1287 | { | |
1288 | if (!strncmp (processed_cmd, c->name, cmd_len)) | |
1289 | { | |
1290 | found = c; | |
1291 | nfound++; | |
1292 | if (c->name[cmd_len] == 0) | |
1293 | { | |
1294 | nfound = 1; | |
1295 | break; | |
1296 | } | |
1297 | } | |
1298 | } | |
1299 | ||
1300 | /* Report error for undefined command name. */ | |
1301 | ||
1302 | if (nfound != 1) | |
1303 | { | |
1304 | if (nfound > 1 && allow_unknown >= 0) | |
1305 | { | |
1306 | ambbuf[0] = 0; | |
1307 | for (c = list; c; c = c->next) | |
1308 | if (!strncmp (processed_cmd, c->name, cmd_len)) | |
1309 | { | |
1310 | if (strlen (ambbuf) + strlen (c->name) + 6 < sizeof ambbuf) | |
1311 | { | |
1312 | if (strlen (ambbuf)) | |
1313 | strcat (ambbuf, ", "); | |
1314 | strcat (ambbuf, c->name); | |
1315 | } | |
1316 | else | |
1317 | { | |
1318 | strcat (ambbuf, ".."); | |
1319 | break; | |
1320 | } | |
1321 | } | |
1322 | error ("Ambiguous %scommand \"%s\": %s.", cmdtype, | |
1323 | processed_cmd, ambbuf); | |
1324 | } | |
1325 | else if (!allow_unknown) | |
1326 | error ("Undefined %scommand: \"%s\".", cmdtype, processed_cmd); | |
1327 | return 0; | |
1328 | } | |
1329 | ||
1330 | /* Skip whitespace before the argument. */ | |
1331 | ||
c5aa993b JM |
1332 | while (*p == ' ' || *p == '\t') |
1333 | p++; | |
c906108c SS |
1334 | *line = p; |
1335 | ||
1336 | if (found->prefixlist && *p) | |
1337 | { | |
1338 | c = lookup_cmd (line, *found->prefixlist, found->prefixname, | |
1339 | found->allow_unknown); | |
1340 | if (c) | |
1341 | return c; | |
1342 | } | |
1343 | ||
1344 | return found; | |
1345 | } | |
1346 | #endif | |
1347 | ||
1348 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
1349 | ||
1350 | /* Return a vector of char pointers which point to the different | |
1351 | possible completions in LIST of TEXT. | |
1352 | ||
1353 | WORD points in the same buffer as TEXT, and completions should be | |
1354 | returned relative to this position. For example, suppose TEXT is "foo" | |
1355 | and we want to complete to "foobar". If WORD is "oo", return | |
1356 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1357 | ||
1358 | char ** | |
fba45db2 | 1359 | complete_on_cmdlist (struct cmd_list_element *list, char *text, char *word) |
c906108c SS |
1360 | { |
1361 | struct cmd_list_element *ptr; | |
1362 | char **matchlist; | |
1363 | int sizeof_matchlist; | |
1364 | int matches; | |
1365 | int textlen = strlen (text); | |
1366 | ||
1367 | sizeof_matchlist = 10; | |
1368 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1369 | matches = 0; | |
1370 | ||
1371 | for (ptr = list; ptr; ptr = ptr->next) | |
1372 | if (!strncmp (ptr->name, text, textlen) | |
1373 | && !ptr->abbrev_flag | |
1374 | && (ptr->function.cfunc | |
1375 | || ptr->prefixlist)) | |
1376 | { | |
1377 | if (matches == sizeof_matchlist) | |
1378 | { | |
1379 | sizeof_matchlist *= 2; | |
c5aa993b | 1380 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1381 | (sizeof_matchlist |
1382 | * sizeof (char *))); | |
1383 | } | |
1384 | ||
c5aa993b | 1385 | matchlist[matches] = (char *) |
c906108c SS |
1386 | xmalloc (strlen (word) + strlen (ptr->name) + 1); |
1387 | if (word == text) | |
1388 | strcpy (matchlist[matches], ptr->name); | |
1389 | else if (word > text) | |
1390 | { | |
1391 | /* Return some portion of ptr->name. */ | |
1392 | strcpy (matchlist[matches], ptr->name + (word - text)); | |
1393 | } | |
1394 | else | |
1395 | { | |
1396 | /* Return some of text plus ptr->name. */ | |
1397 | strncpy (matchlist[matches], word, text - word); | |
1398 | matchlist[matches][text - word] = '\0'; | |
1399 | strcat (matchlist[matches], ptr->name); | |
1400 | } | |
1401 | ++matches; | |
1402 | } | |
1403 | ||
1404 | if (matches == 0) | |
1405 | { | |
c5aa993b | 1406 | free ((PTR) matchlist); |
c906108c SS |
1407 | matchlist = 0; |
1408 | } | |
1409 | else | |
1410 | { | |
c5aa993b JM |
1411 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1412 | * sizeof (char *))); | |
c906108c SS |
1413 | matchlist[matches] = (char *) 0; |
1414 | } | |
1415 | ||
1416 | return matchlist; | |
1417 | } | |
1418 | ||
1419 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
1420 | ||
1421 | /* Return a vector of char pointers which point to the different | |
1422 | possible completions in CMD of TEXT. | |
1423 | ||
1424 | WORD points in the same buffer as TEXT, and completions should be | |
1425 | returned relative to this position. For example, suppose TEXT is "foo" | |
1426 | and we want to complete to "foobar". If WORD is "oo", return | |
1427 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1428 | ||
1429 | char ** | |
53904c9e AC |
1430 | complete_on_enum (const char *enumlist[], |
1431 | char *text, | |
1432 | char *word) | |
c906108c SS |
1433 | { |
1434 | char **matchlist; | |
1435 | int sizeof_matchlist; | |
1436 | int matches; | |
1437 | int textlen = strlen (text); | |
1438 | int i; | |
53904c9e | 1439 | const char *name; |
c906108c SS |
1440 | |
1441 | sizeof_matchlist = 10; | |
1442 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1443 | matches = 0; | |
1444 | ||
1445 | for (i = 0; (name = enumlist[i]) != NULL; i++) | |
1446 | if (strncmp (name, text, textlen) == 0) | |
1447 | { | |
1448 | if (matches == sizeof_matchlist) | |
1449 | { | |
1450 | sizeof_matchlist *= 2; | |
c5aa993b | 1451 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1452 | (sizeof_matchlist |
1453 | * sizeof (char *))); | |
1454 | } | |
1455 | ||
c5aa993b | 1456 | matchlist[matches] = (char *) |
c906108c SS |
1457 | xmalloc (strlen (word) + strlen (name) + 1); |
1458 | if (word == text) | |
1459 | strcpy (matchlist[matches], name); | |
1460 | else if (word > text) | |
1461 | { | |
1462 | /* Return some portion of name. */ | |
1463 | strcpy (matchlist[matches], name + (word - text)); | |
1464 | } | |
1465 | else | |
1466 | { | |
1467 | /* Return some of text plus name. */ | |
1468 | strncpy (matchlist[matches], word, text - word); | |
1469 | matchlist[matches][text - word] = '\0'; | |
1470 | strcat (matchlist[matches], name); | |
1471 | } | |
1472 | ++matches; | |
1473 | } | |
1474 | ||
1475 | if (matches == 0) | |
1476 | { | |
c5aa993b | 1477 | free ((PTR) matchlist); |
c906108c SS |
1478 | matchlist = 0; |
1479 | } | |
1480 | else | |
1481 | { | |
c5aa993b JM |
1482 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1483 | * sizeof (char *))); | |
c906108c SS |
1484 | matchlist[matches] = (char *) 0; |
1485 | } | |
1486 | ||
1487 | return matchlist; | |
1488 | } | |
1489 | ||
97c3646f AC |
1490 | static enum cmd_auto_boolean |
1491 | parse_auto_binary_operation (const char *arg) | |
1492 | { | |
1493 | if (arg != NULL && *arg != '\0') | |
1494 | { | |
1495 | int length = strlen (arg); | |
1496 | while (isspace (arg[length - 1]) && length > 0) | |
1497 | length--; | |
1498 | if (strncmp (arg, "on", length) == 0 | |
1499 | || strncmp (arg, "1", length) == 0 | |
1500 | || strncmp (arg, "yes", length) == 0 | |
1501 | || strncmp (arg, "enable", length) == 0) | |
1502 | return CMD_AUTO_BOOLEAN_TRUE; | |
1503 | else if (strncmp (arg, "off", length) == 0 | |
1504 | || strncmp (arg, "0", length) == 0 | |
1505 | || strncmp (arg, "no", length) == 0 | |
1506 | || strncmp (arg, "disable", length) == 0) | |
1507 | return CMD_AUTO_BOOLEAN_FALSE; | |
1508 | else if (strncmp (arg, "auto", length) == 0 | |
1509 | || (strncmp (arg, "-1", length) == 0 && length > 1)) | |
1510 | return CMD_AUTO_BOOLEAN_AUTO; | |
1511 | } | |
1512 | error ("\"on\", \"off\" or \"auto\" expected."); | |
1513 | return CMD_AUTO_BOOLEAN_AUTO; /* pacify GCC */ | |
1514 | } | |
1515 | ||
c906108c | 1516 | static int |
fba45db2 | 1517 | parse_binary_operation (char *arg) |
c906108c SS |
1518 | { |
1519 | int length; | |
1520 | ||
1521 | if (!arg || !*arg) | |
1522 | return 1; | |
1523 | ||
1524 | length = strlen (arg); | |
1525 | ||
1526 | while (arg[length - 1] == ' ' || arg[length - 1] == '\t') | |
1527 | length--; | |
1528 | ||
97c3646f AC |
1529 | if (strncmp (arg, "on", length) == 0 |
1530 | || strncmp (arg, "1", length) == 0 | |
1531 | || strncmp (arg, "yes", length) == 0 | |
1532 | || strncmp (arg, "enable", length) == 0) | |
c906108c | 1533 | return 1; |
97c3646f AC |
1534 | else if (strncmp (arg, "off", length) == 0 |
1535 | || strncmp (arg, "0", length) == 0 | |
1536 | || strncmp (arg, "no", length) == 0 | |
1537 | || strncmp (arg, "disable", length) == 0) | |
c5aa993b | 1538 | return 0; |
c906108c | 1539 | else |
c5aa993b JM |
1540 | { |
1541 | error ("\"on\" or \"off\" expected."); | |
c906108c | 1542 | return 0; |
c5aa993b | 1543 | } |
c906108c SS |
1544 | } |
1545 | ||
1546 | /* Do a "set" or "show" command. ARG is NULL if no argument, or the text | |
1547 | of the argument, and FROM_TTY is nonzero if this command is being entered | |
1548 | directly by the user (i.e. these are just like any other | |
1549 | command). C is the command list element for the command. */ | |
1550 | void | |
fba45db2 | 1551 | do_setshow_command (char *arg, int from_tty, struct cmd_list_element *c) |
c906108c SS |
1552 | { |
1553 | if (c->type == set_cmd) | |
1554 | { | |
1555 | switch (c->var_type) | |
1556 | { | |
1557 | case var_string: | |
1558 | { | |
1559 | char *new; | |
1560 | char *p; | |
1561 | char *q; | |
1562 | int ch; | |
c5aa993b | 1563 | |
c906108c SS |
1564 | if (arg == NULL) |
1565 | arg = ""; | |
1566 | new = (char *) xmalloc (strlen (arg) + 2); | |
c5aa993b JM |
1567 | p = arg; |
1568 | q = new; | |
c906108c SS |
1569 | while ((ch = *p++) != '\000') |
1570 | { | |
1571 | if (ch == '\\') | |
1572 | { | |
1573 | /* \ at end of argument is used after spaces | |
1574 | so they won't be lost. */ | |
1575 | /* This is obsolete now that we no longer strip | |
1576 | trailing whitespace and actually, the backslash | |
1577 | didn't get here in my test, readline or | |
1578 | something did something funky with a backslash | |
1579 | right before a newline. */ | |
1580 | if (*p == 0) | |
1581 | break; | |
1582 | ch = parse_escape (&p); | |
1583 | if (ch == 0) | |
c5aa993b | 1584 | break; /* C loses */ |
c906108c SS |
1585 | else if (ch > 0) |
1586 | *q++ = ch; | |
1587 | } | |
1588 | else | |
1589 | *q++ = ch; | |
1590 | } | |
1591 | #if 0 | |
1592 | if (*(p - 1) != '\\') | |
1593 | *q++ = ' '; | |
1594 | #endif | |
1595 | *q++ = '\0'; | |
1596 | new = (char *) xrealloc (new, q - new); | |
c5aa993b JM |
1597 | if (*(char **) c->var != NULL) |
1598 | free (*(char **) c->var); | |
c906108c SS |
1599 | *(char **) c->var = new; |
1600 | } | |
1601 | break; | |
1602 | case var_string_noescape: | |
1603 | if (arg == NULL) | |
1604 | arg = ""; | |
c5aa993b JM |
1605 | if (*(char **) c->var != NULL) |
1606 | free (*(char **) c->var); | |
c906108c SS |
1607 | *(char **) c->var = savestring (arg, strlen (arg)); |
1608 | break; | |
1609 | case var_filename: | |
1610 | if (arg == NULL) | |
1611 | error_no_arg ("filename to set it to."); | |
c5aa993b JM |
1612 | if (*(char **) c->var != NULL) |
1613 | free (*(char **) c->var); | |
1614 | *(char **) c->var = tilde_expand (arg); | |
c906108c SS |
1615 | break; |
1616 | case var_boolean: | |
1617 | *(int *) c->var = parse_binary_operation (arg); | |
1618 | break; | |
97c3646f AC |
1619 | case var_auto_boolean: |
1620 | *(enum cmd_auto_boolean *) c->var = parse_auto_binary_operation (arg); | |
1621 | break; | |
c906108c SS |
1622 | case var_uinteger: |
1623 | if (arg == NULL) | |
1624 | error_no_arg ("integer to set it to."); | |
bb518678 | 1625 | *(unsigned int *) c->var = parse_and_eval_long (arg); |
c906108c SS |
1626 | if (*(unsigned int *) c->var == 0) |
1627 | *(unsigned int *) c->var = UINT_MAX; | |
1628 | break; | |
1629 | case var_integer: | |
1630 | { | |
1631 | unsigned int val; | |
1632 | if (arg == NULL) | |
1633 | error_no_arg ("integer to set it to."); | |
bb518678 | 1634 | val = parse_and_eval_long (arg); |
c906108c SS |
1635 | if (val == 0) |
1636 | *(int *) c->var = INT_MAX; | |
1637 | else if (val >= INT_MAX) | |
1638 | error ("integer %u out of range", val); | |
1639 | else | |
1640 | *(int *) c->var = val; | |
1641 | break; | |
1642 | } | |
1643 | case var_zinteger: | |
1644 | if (arg == NULL) | |
1645 | error_no_arg ("integer to set it to."); | |
bb518678 | 1646 | *(int *) c->var = parse_and_eval_long (arg); |
c906108c SS |
1647 | break; |
1648 | case var_enum: | |
1649 | { | |
1650 | int i; | |
1651 | int len; | |
1652 | int nmatches; | |
53904c9e | 1653 | const char *match = NULL; |
c906108c SS |
1654 | char *p; |
1655 | ||
1656 | /* if no argument was supplied, print an informative error message */ | |
1657 | if (arg == NULL) | |
1658 | { | |
1659 | char msg[1024]; | |
1660 | strcpy (msg, "Requires an argument. Valid arguments are "); | |
1661 | for (i = 0; c->enums[i]; i++) | |
1662 | { | |
1663 | if (i != 0) | |
1664 | strcat (msg, ", "); | |
1665 | strcat (msg, c->enums[i]); | |
1666 | } | |
1667 | strcat (msg, "."); | |
1668 | error (msg); | |
1669 | } | |
1670 | ||
1671 | p = strchr (arg, ' '); | |
c5aa993b | 1672 | |
c906108c SS |
1673 | if (p) |
1674 | len = p - arg; | |
1675 | else | |
1676 | len = strlen (arg); | |
1677 | ||
1678 | nmatches = 0; | |
1679 | for (i = 0; c->enums[i]; i++) | |
1680 | if (strncmp (arg, c->enums[i], len) == 0) | |
1681 | { | |
aa891095 AC |
1682 | if (c->enums[i][len] == '\0') |
1683 | { | |
1684 | match = c->enums[i]; | |
1685 | nmatches = 1; | |
1686 | break; /* exact match. */ | |
1687 | } | |
1688 | else | |
1689 | { | |
1690 | match = c->enums[i]; | |
1691 | nmatches++; | |
1692 | } | |
c906108c SS |
1693 | } |
1694 | ||
1695 | if (nmatches <= 0) | |
1696 | error ("Undefined item: \"%s\".", arg); | |
1697 | ||
1698 | if (nmatches > 1) | |
1699 | error ("Ambiguous item \"%s\".", arg); | |
1700 | ||
53904c9e | 1701 | *(const char **) c->var = match; |
c906108c SS |
1702 | } |
1703 | break; | |
1704 | default: | |
1705 | error ("gdb internal error: bad var_type in do_setshow_command"); | |
1706 | } | |
1707 | } | |
1708 | else if (c->type == show_cmd) | |
1709 | { | |
8b93c638 JM |
1710 | #ifdef UI_OUT |
1711 | struct cleanup *old_chain; | |
1712 | struct ui_stream *stb; | |
1713 | int quote; | |
1714 | ||
1715 | stb = ui_out_stream_new (uiout); | |
b02eeafb | 1716 | old_chain = make_cleanup_ui_out_stream_delete (stb); |
8b93c638 JM |
1717 | #endif /* UI_OUT */ |
1718 | ||
c906108c SS |
1719 | /* Print doc minus "show" at start. */ |
1720 | print_doc_line (gdb_stdout, c->doc + 5); | |
c5aa993b | 1721 | |
8b93c638 JM |
1722 | #ifdef UI_OUT |
1723 | ui_out_text (uiout, " is "); | |
1724 | ui_out_wrap_hint (uiout, " "); | |
1725 | quote = 0; | |
1726 | switch (c->var_type) | |
1727 | { | |
1728 | case var_string: | |
1729 | { | |
1730 | unsigned char *p; | |
1731 | ||
1732 | if (*(unsigned char **) c->var) | |
1733 | fputstr_filtered (*(unsigned char **) c->var, '"', stb->stream); | |
1734 | quote = 1; | |
1735 | } | |
1736 | break; | |
1737 | case var_string_noescape: | |
1738 | case var_filename: | |
1739 | case var_enum: | |
1740 | if (*(char **) c->var) | |
1741 | fputs_filtered (*(char **) c->var, stb->stream); | |
1742 | quote = 1; | |
1743 | break; | |
1744 | case var_boolean: | |
1745 | fputs_filtered (*(int *) c->var ? "on" : "off", stb->stream); | |
1746 | break; | |
97c3646f | 1747 | case var_auto_boolean: |
d5b61b59 | 1748 | switch (*(enum cmd_auto_boolean*) c->var) |
97c3646f AC |
1749 | { |
1750 | case CMD_AUTO_BOOLEAN_TRUE: | |
1751 | fputs_filtered ("on", stb->stream); | |
1752 | break; | |
1753 | case CMD_AUTO_BOOLEAN_FALSE: | |
1754 | fputs_filtered ("off", stb->stream); | |
1755 | break; | |
1756 | case CMD_AUTO_BOOLEAN_AUTO: | |
1757 | fputs_filtered ("auto", stb->stream); | |
1758 | break; | |
1759 | default: | |
1760 | internal_error ("do_setshow_command: invalid var_auto_boolean"); | |
1761 | break; | |
1762 | } | |
1763 | break; | |
8b93c638 JM |
1764 | case var_uinteger: |
1765 | if (*(unsigned int *) c->var == UINT_MAX) | |
1766 | { | |
1767 | fputs_filtered ("unlimited", stb->stream); | |
1768 | break; | |
1769 | } | |
1770 | /* else fall through */ | |
1771 | case var_zinteger: | |
1772 | fprintf_filtered (stb->stream, "%u", *(unsigned int *) c->var); | |
1773 | break; | |
1774 | case var_integer: | |
1775 | if (*(int *) c->var == INT_MAX) | |
1776 | { | |
1777 | fputs_filtered ("unlimited", stb->stream); | |
1778 | } | |
1779 | else | |
1780 | fprintf_filtered (stb->stream, "%d", *(int *) c->var); | |
1781 | break; | |
1782 | ||
1783 | default: | |
1784 | error ("gdb internal error: bad var_type in do_setshow_command"); | |
1785 | } | |
1786 | if (quote) | |
1787 | ui_out_text (uiout, "\""); | |
1788 | ui_out_field_stream (uiout, "value", stb); | |
1789 | if (quote) | |
1790 | ui_out_text (uiout, "\""); | |
1791 | ui_out_text (uiout, ".\n"); | |
1792 | do_cleanups (old_chain); | |
1793 | #else | |
c906108c SS |
1794 | fputs_filtered (" is ", gdb_stdout); |
1795 | wrap_here (" "); | |
1796 | switch (c->var_type) | |
1797 | { | |
c5aa993b JM |
1798 | case var_string: |
1799 | { | |
c5aa993b JM |
1800 | fputs_filtered ("\"", gdb_stdout); |
1801 | if (*(unsigned char **) c->var) | |
43e526b9 | 1802 | fputstr_filtered (*(unsigned char **) c->var, '"', gdb_stdout); |
c5aa993b JM |
1803 | fputs_filtered ("\"", gdb_stdout); |
1804 | } | |
1805 | break; | |
1806 | case var_string_noescape: | |
1807 | case var_filename: | |
1808 | case var_enum: | |
c906108c | 1809 | fputs_filtered ("\"", gdb_stdout); |
c5aa993b JM |
1810 | if (*(char **) c->var) |
1811 | fputs_filtered (*(char **) c->var, gdb_stdout); | |
c906108c | 1812 | fputs_filtered ("\"", gdb_stdout); |
c906108c | 1813 | break; |
c5aa993b JM |
1814 | case var_boolean: |
1815 | fputs_filtered (*(int *) c->var ? "on" : "off", gdb_stdout); | |
1816 | break; | |
97c3646f AC |
1817 | case var_auto_boolean: |
1818 | switch (*(enum cmd_auto_boolean*) c->var) | |
1819 | { | |
1820 | case CMD_AUTO_BOOLEAN_TRUE: | |
1821 | fputs_filtered ("on", gdb_stdout); | |
1822 | break; | |
1823 | case CMD_AUTO_BOOLEAN_FALSE: | |
1824 | fputs_filtered ("off", gdb_stdout); | |
1825 | break; | |
1826 | case CMD_AUTO_BOOLEAN_AUTO: | |
1827 | fputs_filtered ("auto", gdb_stdout); | |
1828 | break; | |
1829 | default: | |
1830 | internal_error ("do_setshow_command: invalid var_auto_boolean"); | |
1831 | break; | |
1832 | } | |
1833 | break; | |
c5aa993b JM |
1834 | case var_uinteger: |
1835 | if (*(unsigned int *) c->var == UINT_MAX) | |
1836 | { | |
1837 | fputs_filtered ("unlimited", gdb_stdout); | |
1838 | break; | |
1839 | } | |
1840 | /* else fall through */ | |
1841 | case var_zinteger: | |
1842 | fprintf_filtered (gdb_stdout, "%u", *(unsigned int *) c->var); | |
1843 | break; | |
1844 | case var_integer: | |
1845 | if (*(int *) c->var == INT_MAX) | |
1846 | { | |
1847 | fputs_filtered ("unlimited", gdb_stdout); | |
1848 | } | |
1849 | else | |
1850 | fprintf_filtered (gdb_stdout, "%d", *(int *) c->var); | |
1851 | break; | |
1852 | ||
1853 | default: | |
1854 | error ("gdb internal error: bad var_type in do_setshow_command"); | |
c906108c | 1855 | } |
c906108c | 1856 | fputs_filtered (".\n", gdb_stdout); |
8b93c638 | 1857 | #endif |
c906108c SS |
1858 | } |
1859 | else | |
1860 | error ("gdb internal error: bad cmd_type in do_setshow_command"); | |
1861 | (*c->function.sfunc) (NULL, from_tty, c); | |
96baa820 JM |
1862 | if (c->type == set_cmd && set_hook) |
1863 | set_hook (c); | |
c906108c SS |
1864 | } |
1865 | ||
1866 | /* Show all the settings in a list of show commands. */ | |
1867 | ||
1868 | void | |
fba45db2 | 1869 | cmd_show_list (struct cmd_list_element *list, int from_tty, char *prefix) |
c906108c | 1870 | { |
8b93c638 JM |
1871 | #ifdef UI_OUT |
1872 | ui_out_list_begin (uiout, "showlist"); | |
1873 | #endif | |
c5aa993b JM |
1874 | for (; list != NULL; list = list->next) |
1875 | { | |
1876 | /* If we find a prefix, run its list, prefixing our output by its | |
1877 | prefix (with "show " skipped). */ | |
8b93c638 JM |
1878 | #ifdef UI_OUT |
1879 | if (list->prefixlist && !list->abbrev_flag) | |
1880 | { | |
1881 | ui_out_list_begin (uiout, "optionlist"); | |
1882 | ui_out_field_string (uiout, "prefix", list->prefixname + 5); | |
1883 | cmd_show_list (*list->prefixlist, from_tty, list->prefixname + 5); | |
1884 | ui_out_list_end (uiout); | |
1885 | } | |
1886 | if (list->type == show_cmd) | |
1887 | { | |
1888 | ui_out_list_begin (uiout, "option"); | |
1889 | ui_out_text (uiout, prefix); | |
1890 | ui_out_field_string (uiout, "name", list->name); | |
1891 | ui_out_text (uiout, ": "); | |
1892 | do_setshow_command ((char *) NULL, from_tty, list); | |
1893 | ui_out_list_end (uiout); | |
1894 | } | |
1895 | #else | |
c5aa993b JM |
1896 | if (list->prefixlist && !list->abbrev_flag) |
1897 | cmd_show_list (*list->prefixlist, from_tty, list->prefixname + 5); | |
1898 | if (list->type == show_cmd) | |
1899 | { | |
1900 | fputs_filtered (prefix, gdb_stdout); | |
1901 | fputs_filtered (list->name, gdb_stdout); | |
1902 | fputs_filtered (": ", gdb_stdout); | |
1903 | do_setshow_command ((char *) NULL, from_tty, list); | |
1904 | } | |
8b93c638 | 1905 | #endif |
c5aa993b | 1906 | } |
8b93c638 JM |
1907 | #ifdef UI_OUT |
1908 | ui_out_list_end (uiout); | |
1909 | #endif | |
c906108c SS |
1910 | } |
1911 | ||
1912 | /* ARGSUSED */ | |
1913 | static void | |
fba45db2 | 1914 | shell_escape (char *arg, int from_tty) |
c906108c SS |
1915 | { |
1916 | #ifdef CANT_FORK | |
53a5351d JM |
1917 | /* If ARG is NULL, they want an inferior shell, but `system' just |
1918 | reports if the shell is available when passed a NULL arg. */ | |
1919 | int rc = system (arg ? arg : ""); | |
1920 | ||
1921 | if (!arg) | |
1922 | arg = "inferior shell"; | |
1923 | ||
1924 | if (rc == -1) | |
1925 | { | |
1926 | fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", arg, | |
1927 | safe_strerror (errno)); | |
1928 | gdb_flush (gdb_stderr); | |
1929 | } | |
1930 | else if (rc) | |
1931 | { | |
1932 | fprintf_unfiltered (gdb_stderr, "%s exited with status %d\n", arg, rc); | |
1933 | gdb_flush (gdb_stderr); | |
1934 | } | |
1935 | #ifdef __DJGPP__ | |
1936 | /* Make sure to return to the directory GDB thinks it is, in case the | |
1937 | shell command we just ran changed it. */ | |
1938 | chdir (current_directory); | |
1939 | #endif | |
c906108c SS |
1940 | #else /* Can fork. */ |
1941 | int rc, status, pid; | |
1942 | char *p, *user_shell; | |
1943 | ||
1944 | if ((user_shell = (char *) getenv ("SHELL")) == NULL) | |
1945 | user_shell = "/bin/sh"; | |
1946 | ||
1947 | /* Get the name of the shell for arg0 */ | |
1948 | if ((p = strrchr (user_shell, '/')) == NULL) | |
1949 | p = user_shell; | |
1950 | else | |
1951 | p++; /* Get past '/' */ | |
1952 | ||
c5aa993b | 1953 | if ((pid = fork ()) == 0) |
c906108c SS |
1954 | { |
1955 | if (!arg) | |
1956 | execl (user_shell, p, 0); | |
1957 | else | |
1958 | execl (user_shell, p, "-c", arg, 0); | |
1959 | ||
1960 | fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell, | |
1961 | safe_strerror (errno)); | |
1962 | gdb_flush (gdb_stderr); | |
1963 | _exit (0177); | |
1964 | } | |
1965 | ||
1966 | if (pid != -1) | |
1967 | while ((rc = wait (&status)) != pid && rc != -1) | |
1968 | ; | |
1969 | else | |
1970 | error ("Fork failed"); | |
1971 | #endif /* Can fork. */ | |
1972 | } | |
1973 | ||
1974 | static void | |
fba45db2 | 1975 | make_command (char *arg, int from_tty) |
c906108c SS |
1976 | { |
1977 | char *p; | |
1978 | ||
1979 | if (arg == 0) | |
1980 | p = "make"; | |
1981 | else | |
1982 | { | |
c5aa993b | 1983 | p = xmalloc (sizeof ("make ") + strlen (arg)); |
c906108c | 1984 | strcpy (p, "make "); |
c5aa993b | 1985 | strcpy (p + sizeof ("make ") - 1, arg); |
c906108c | 1986 | } |
c5aa993b | 1987 | |
c906108c SS |
1988 | shell_escape (p, from_tty); |
1989 | } | |
1990 | ||
1991 | static void | |
fba45db2 | 1992 | show_user_1 (struct cmd_list_element *c, struct ui_file *stream) |
c906108c SS |
1993 | { |
1994 | register struct command_line *cmdlines; | |
1995 | ||
1996 | cmdlines = c->user_commands; | |
1997 | if (!cmdlines) | |
1998 | return; | |
1999 | fputs_filtered ("User command ", stream); | |
2000 | fputs_filtered (c->name, stream); | |
2001 | fputs_filtered (":\n", stream); | |
2002 | ||
8b93c638 JM |
2003 | #ifdef UI_OUT |
2004 | print_command_lines (uiout, cmdlines, 1); | |
2005 | fputs_filtered ("\n", stream); | |
2006 | #else | |
c906108c SS |
2007 | while (cmdlines) |
2008 | { | |
9e086581 | 2009 | print_command_line (cmdlines, 4, stream); |
c906108c SS |
2010 | cmdlines = cmdlines->next; |
2011 | } | |
2012 | fputs_filtered ("\n", stream); | |
8b93c638 | 2013 | #endif |
c906108c SS |
2014 | } |
2015 | ||
2016 | /* ARGSUSED */ | |
2017 | static void | |
fba45db2 | 2018 | show_user (char *args, int from_tty) |
c906108c SS |
2019 | { |
2020 | struct cmd_list_element *c; | |
2021 | extern struct cmd_list_element *cmdlist; | |
2022 | ||
2023 | if (args) | |
2024 | { | |
2025 | c = lookup_cmd (&args, cmdlist, "", 0, 1); | |
2026 | if (c->class != class_user) | |
2027 | error ("Not a user command."); | |
2028 | show_user_1 (c, gdb_stdout); | |
2029 | } | |
2030 | else | |
2031 | { | |
2032 | for (c = cmdlist; c; c = c->next) | |
2033 | { | |
2034 | if (c->class == class_user) | |
2035 | show_user_1 (c, gdb_stdout); | |
2036 | } | |
2037 | } | |
2038 | } | |
2039 | ||
2040 | void | |
fba45db2 | 2041 | _initialize_command (void) |
c906108c SS |
2042 | { |
2043 | add_com ("shell", class_support, shell_escape, | |
2044 | "Execute the rest of the line as a shell command. \n\ | |
2045 | With no arguments, run an inferior shell."); | |
2046 | ||
acd46a93 | 2047 | /* NOTE: cagney/2000-03-20: Being able to enter ``(gdb) !ls'' would |
e26cc349 | 2048 | be a really useful feature. Unfortunately, the below wont do |
acd46a93 AC |
2049 | this. Instead it adds support for the form ``(gdb) ! ls'' |
2050 | (i.e. the space is required). If the ``!'' command below is | |
2051 | added the complains about no ``!'' command would be replaced by | |
2052 | complains about how the ``!'' command is broken :-) */ | |
c906108c | 2053 | if (xdb_commands) |
c5aa993b | 2054 | add_com_alias ("!", "shell", class_support, 0); |
c906108c SS |
2055 | |
2056 | add_com ("make", class_support, make_command, | |
c5aa993b JM |
2057 | "Run the ``make'' program using the rest of the line as arguments."); |
2058 | add_cmd ("user", no_class, show_user, | |
c906108c SS |
2059 | "Show definitions of user defined commands.\n\ |
2060 | Argument is the name of the user defined command.\n\ | |
2061 | With no argument, show definitions of all user defined commands.", &showlist); | |
6837a0a2 | 2062 | add_com ("apropos", class_support, apropos_command, "Search for commands matching a REGEXP"); |
c906108c | 2063 | } |