Commit | Line | Data |
---|---|---|
7d9884b9 JG |
1 | /* Handle lists of commands, their decoding and documentation, for GDB. |
2 | Copyright 1986, 1989, 1990, 1991 Free Software Foundation, Inc. | |
dd3b648e | 3 | |
99a7de40 JG |
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. | |
dd3b648e | 8 | |
99a7de40 JG |
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. | |
dd3b648e | 13 | |
99a7de40 JG |
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 | |
6c9638b4 | 16 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
dd3b648e RP |
17 | |
18 | #include "defs.h" | |
4369a140 | 19 | #include "gdbcmd.h" |
dd3b648e RP |
20 | #include "symtab.h" |
21 | #include "value.h" | |
dd3b648e | 22 | #include <ctype.h> |
2b576293 | 23 | #include "gdb_string.h" |
1a494973 C |
24 | #ifdef HAVE_UNISTD_H |
25 | #include <unistd.h> | |
26 | #endif | |
dd3b648e | 27 | |
4ff3dfab JM |
28 | #ifdef HAVE_WAIT_H |
29 | # include <wait.h> | |
30 | #else | |
31 | # ifdef HAVE_SYS_WAIT_H | |
32 | # include <sys/wait.h> | |
33 | # endif | |
34 | #endif | |
35 | ||
dd877625 AC |
36 | #include "wait.h" |
37 | ||
1ab3bf1b JG |
38 | /* Prototypes for local functions */ |
39 | ||
40 | static void | |
41 | undef_cmd_error PARAMS ((char *, char *)); | |
42 | ||
43 | static void | |
44 | show_user PARAMS ((char *, int)); | |
45 | ||
46 | static void | |
199b2450 | 47 | show_user_1 PARAMS ((struct cmd_list_element *, GDB_FILE *)); |
1ab3bf1b JG |
48 | |
49 | static void | |
50 | make_command PARAMS ((char *, int)); | |
51 | ||
52 | static void | |
53 | shell_escape PARAMS ((char *, int)); | |
54 | ||
55 | static int | |
56 | parse_binary_operation PARAMS ((char *)); | |
57 | ||
58 | static void | |
199b2450 | 59 | print_doc_line PARAMS ((GDB_FILE *, char *)); |
dd3b648e | 60 | |
f936e20d RP |
61 | /* Add element named NAME. |
62 | CLASS is the top level category into which commands are broken down | |
63 | for "help" purposes. | |
dd3b648e RP |
64 | FUN should be the function to execute the command; |
65 | it will get a character string as argument, with leading | |
66 | and trailing blanks already eliminated. | |
67 | ||
68 | DOC is a documentation string for the command. | |
69 | Its first line should be a complete sentence. | |
70 | It should start with ? for a command that is an abbreviation | |
f936e20d RP |
71 | or with * for a command that most users don't need to know about. |
72 | ||
36ad9bd5 JM |
73 | Add this command to command list *LIST. |
74 | ||
75 | Returns a pointer to the added command (not necessarily the head | |
76 | of *LIST). */ | |
dd3b648e RP |
77 | |
78 | struct cmd_list_element * | |
79 | add_cmd (name, class, fun, doc, list) | |
80 | char *name; | |
81 | enum command_class class; | |
1ab3bf1b | 82 | void (*fun) PARAMS ((char *, int)); |
dd3b648e RP |
83 | char *doc; |
84 | struct cmd_list_element **list; | |
85 | { | |
86 | register struct cmd_list_element *c | |
87 | = (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); | |
36ad9bd5 | 88 | struct cmd_list_element *p; |
dd3b648e RP |
89 | |
90 | delete_cmd (name, list); | |
36ad9bd5 JM |
91 | |
92 | if (*list == NULL || STRCMP ((*list)->name, name) >= 0) | |
93 | { | |
94 | c->next = *list; | |
95 | *list = c; | |
96 | } | |
97 | else | |
98 | { | |
99 | p = *list; | |
100 | while (p->next && STRCMP (p->next->name, name) <= 0) | |
101 | { | |
102 | p = p->next; | |
103 | } | |
104 | c->next = p->next; | |
105 | p->next = c; | |
106 | } | |
107 | ||
dd3b648e RP |
108 | c->name = name; |
109 | c->class = class; | |
1ab3bf1b | 110 | c->function.cfunc = fun; |
dd3b648e | 111 | c->doc = doc; |
f56cc4e7 FF |
112 | c->hook = NULL; |
113 | c->prefixlist = NULL; | |
114 | c->prefixname = NULL; | |
dd3b648e RP |
115 | c->allow_unknown = 0; |
116 | c->abbrev_flag = 0; | |
dd3b648e | 117 | c->completer = make_symbol_completion_list; |
f56cc4e7 FF |
118 | c->type = not_set_cmd; |
119 | c->var = NULL; | |
dd3b648e | 120 | c->var_type = var_boolean; |
f56cc4e7 FF |
121 | c->enums = NULL; |
122 | c->user_commands = NULL; | |
123 | c->hookee = NULL; | |
124 | c->cmd_pointer = NULL; | |
36ad9bd5 | 125 | |
dd3b648e RP |
126 | return c; |
127 | } | |
128 | ||
129 | /* Same as above, except that the abbrev_flag is set. */ | |
130 | ||
1ab3bf1b JG |
131 | #if 0 /* Currently unused */ |
132 | ||
dd3b648e RP |
133 | struct cmd_list_element * |
134 | add_abbrev_cmd (name, class, fun, doc, list) | |
135 | char *name; | |
136 | enum command_class class; | |
1ab3bf1b | 137 | void (*fun) PARAMS ((char *, int)); |
dd3b648e RP |
138 | char *doc; |
139 | struct cmd_list_element **list; | |
140 | { | |
141 | register struct cmd_list_element *c | |
142 | = add_cmd (name, class, fun, doc, list); | |
143 | ||
144 | c->abbrev_flag = 1; | |
145 | return c; | |
146 | } | |
147 | ||
1ab3bf1b JG |
148 | #endif |
149 | ||
dd3b648e RP |
150 | struct cmd_list_element * |
151 | add_alias_cmd (name, oldname, class, abbrev_flag, list) | |
152 | char *name; | |
153 | char *oldname; | |
154 | enum command_class class; | |
155 | int abbrev_flag; | |
156 | struct cmd_list_element **list; | |
157 | { | |
158 | /* Must do this since lookup_cmd tries to side-effect its first arg */ | |
159 | char *copied_name; | |
160 | register struct cmd_list_element *old; | |
161 | register struct cmd_list_element *c; | |
162 | copied_name = (char *) alloca (strlen (oldname) + 1); | |
163 | strcpy (copied_name, oldname); | |
164 | old = lookup_cmd (&copied_name, *list, "", 1, 1); | |
165 | ||
166 | if (old == 0) | |
167 | { | |
168 | delete_cmd (name, list); | |
169 | return 0; | |
170 | } | |
171 | ||
1ab3bf1b | 172 | c = add_cmd (name, class, old->function.cfunc, old->doc, list); |
dd3b648e RP |
173 | c->prefixlist = old->prefixlist; |
174 | c->prefixname = old->prefixname; | |
175 | c->allow_unknown = old->allow_unknown; | |
176 | c->abbrev_flag = abbrev_flag; | |
a65841d7 | 177 | c->cmd_pointer = old; |
dd3b648e RP |
178 | return c; |
179 | } | |
180 | ||
181 | /* Like add_cmd but adds an element for a command prefix: | |
182 | a name that should be followed by a subcommand to be looked up | |
183 | in another command list. PREFIXLIST should be the address | |
184 | of the variable containing that list. */ | |
185 | ||
186 | struct cmd_list_element * | |
187 | add_prefix_cmd (name, class, fun, doc, prefixlist, prefixname, | |
188 | allow_unknown, list) | |
189 | char *name; | |
190 | enum command_class class; | |
1ab3bf1b | 191 | void (*fun) PARAMS ((char *, int)); |
dd3b648e RP |
192 | char *doc; |
193 | struct cmd_list_element **prefixlist; | |
194 | char *prefixname; | |
195 | int allow_unknown; | |
196 | struct cmd_list_element **list; | |
197 | { | |
198 | register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); | |
199 | c->prefixlist = prefixlist; | |
200 | c->prefixname = prefixname; | |
201 | c->allow_unknown = allow_unknown; | |
202 | return c; | |
203 | } | |
204 | ||
0efe20a6 | 205 | /* Like add_prefix_cmd but sets the abbrev_flag on the new command. */ |
dd3b648e RP |
206 | |
207 | struct cmd_list_element * | |
208 | add_abbrev_prefix_cmd (name, class, fun, doc, prefixlist, prefixname, | |
1ab3bf1b | 209 | allow_unknown, list) |
dd3b648e RP |
210 | char *name; |
211 | enum command_class class; | |
1ab3bf1b | 212 | void (*fun) PARAMS ((char *, int)); |
dd3b648e RP |
213 | char *doc; |
214 | struct cmd_list_element **prefixlist; | |
215 | char *prefixname; | |
216 | int allow_unknown; | |
217 | struct cmd_list_element **list; | |
218 | { | |
219 | register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); | |
220 | c->prefixlist = prefixlist; | |
221 | c->prefixname = prefixname; | |
222 | c->allow_unknown = allow_unknown; | |
223 | c->abbrev_flag = 1; | |
224 | return c; | |
225 | } | |
226 | ||
e6357967 | 227 | /* This is an empty "cfunc". */ |
dd3b648e | 228 | void |
e6357967 JK |
229 | not_just_help_class_command (args, from_tty) |
230 | char *args; | |
231 | int from_tty; | |
232 | { | |
233 | } | |
234 | ||
235 | /* This is an empty "sfunc". */ | |
236 | static void empty_sfunc PARAMS ((char *, int, struct cmd_list_element *)); | |
237 | ||
238 | static void | |
239 | empty_sfunc (args, from_tty, c) | |
dd3b648e RP |
240 | char *args; |
241 | int from_tty; | |
719d9abb | 242 | struct cmd_list_element *c; |
dd3b648e RP |
243 | { |
244 | } | |
245 | ||
246 | /* Add element named NAME to command list LIST (the list for set | |
247 | or some sublist thereof). | |
248 | CLASS is as in add_cmd. | |
249 | VAR_TYPE is the kind of thing we are setting. | |
250 | VAR is address of the variable being controlled by this command. | |
251 | DOC is the documentation string. */ | |
1ab3bf1b | 252 | |
dd3b648e RP |
253 | struct cmd_list_element * |
254 | add_set_cmd (name, class, var_type, var, doc, list) | |
255 | char *name; | |
256 | enum command_class class; | |
257 | var_types var_type; | |
258 | char *var; | |
259 | char *doc; | |
260 | struct cmd_list_element **list; | |
261 | { | |
dd3b648e | 262 | struct cmd_list_element *c |
719d9abb | 263 | = add_cmd (name, class, NO_FUNCTION, doc, list); |
dd3b648e RP |
264 | |
265 | c->type = set_cmd; | |
266 | c->var_type = var_type; | |
267 | c->var = var; | |
719d9abb JK |
268 | /* This needs to be something besides NO_FUNCTION so that this isn't |
269 | treated as a help class. */ | |
e6357967 | 270 | c->function.sfunc = empty_sfunc; |
dd3b648e RP |
271 | return c; |
272 | } | |
273 | ||
236274b9 SG |
274 | /* Add element named NAME to command list LIST (the list for set |
275 | or some sublist thereof). | |
276 | CLASS is as in add_cmd. | |
277 | ENUMLIST is a list of strings which may follow NAME. | |
278 | VAR is address of the variable which will contain the matching string | |
279 | (from ENUMLIST). | |
280 | DOC is the documentation string. */ | |
281 | ||
282 | struct cmd_list_element * | |
283 | add_set_enum_cmd (name, class, enumlist, var, doc, list) | |
284 | char *name; | |
285 | enum command_class class; | |
286 | char *enumlist[]; | |
287 | char *var; | |
288 | char *doc; | |
289 | struct cmd_list_element **list; | |
290 | { | |
291 | struct cmd_list_element *c | |
292 | = add_set_cmd (name, class, var_enum, var, doc, list); | |
236274b9 SG |
293 | c->enums = enumlist; |
294 | ||
295 | return c; | |
296 | } | |
297 | ||
dd3b648e | 298 | /* Where SETCMD has already been added, add the corresponding show |
36ad9bd5 JM |
299 | command to LIST and return a pointer to the added command (not |
300 | necessarily the head of LIST). */ | |
dd3b648e RP |
301 | struct cmd_list_element * |
302 | add_show_from_set (setcmd, list) | |
303 | struct cmd_list_element *setcmd; | |
304 | struct cmd_list_element **list; | |
305 | { | |
306 | struct cmd_list_element *showcmd = | |
307 | (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); | |
36ad9bd5 | 308 | struct cmd_list_element *p; |
dd3b648e | 309 | |
4ed3a9ea | 310 | memcpy (showcmd, setcmd, sizeof (struct cmd_list_element)); |
dd3b648e RP |
311 | delete_cmd (showcmd->name, list); |
312 | showcmd->type = show_cmd; | |
313 | ||
314 | /* Replace "set " at start of docstring with "show ". */ | |
315 | if (setcmd->doc[0] == 'S' && setcmd->doc[1] == 'e' | |
316 | && setcmd->doc[2] == 't' && setcmd->doc[3] == ' ') | |
58ae87f6 | 317 | showcmd->doc = concat ("Show ", setcmd->doc + 4, NULL); |
dd3b648e | 318 | else |
199b2450 | 319 | fprintf_unfiltered (gdb_stderr, "GDB internal error: Bad docstring for set command\n"); |
dd3b648e | 320 | |
36ad9bd5 JM |
321 | if (*list == NULL || STRCMP ((*list)->name, showcmd->name) >= 0) |
322 | { | |
323 | showcmd->next = *list; | |
324 | *list = showcmd; | |
325 | } | |
326 | else | |
327 | { | |
328 | p = *list; | |
329 | while (p->next && STRCMP (p->next->name, showcmd->name) <= 0) | |
330 | { | |
331 | p = p->next; | |
332 | } | |
333 | showcmd->next = p->next; | |
334 | p->next = showcmd; | |
335 | } | |
336 | ||
dd3b648e RP |
337 | return showcmd; |
338 | } | |
339 | ||
340 | /* Remove the command named NAME from the command list. */ | |
341 | ||
342 | void | |
343 | delete_cmd (name, list) | |
344 | char *name; | |
345 | struct cmd_list_element **list; | |
346 | { | |
347 | register struct cmd_list_element *c; | |
348 | struct cmd_list_element *p; | |
349 | ||
2e4964ad | 350 | while (*list && STREQ ((*list)->name, name)) |
dd3b648e | 351 | { |
a65841d7 JG |
352 | if ((*list)->hookee) |
353 | (*list)->hookee->hook = 0; /* Hook slips out of its mouth */ | |
dd3b648e | 354 | p = (*list)->next; |
be772100 | 355 | free ((PTR)*list); |
dd3b648e RP |
356 | *list = p; |
357 | } | |
358 | ||
359 | if (*list) | |
360 | for (c = *list; c->next;) | |
361 | { | |
2e4964ad | 362 | if (STREQ (c->next->name, name)) |
dd3b648e | 363 | { |
a65841d7 JG |
364 | if (c->next->hookee) |
365 | c->next->hookee->hook = 0; /* hooked cmd gets away. */ | |
dd3b648e | 366 | p = c->next->next; |
be772100 | 367 | free ((PTR)c->next); |
dd3b648e RP |
368 | c->next = p; |
369 | } | |
370 | else | |
371 | c = c->next; | |
372 | } | |
373 | } | |
374 | ||
dd3b648e RP |
375 | /* This command really has to deal with two things: |
376 | * 1) I want documentation on *this string* (usually called by | |
377 | * "help commandname"). | |
378 | * 2) I want documentation on *this list* (usually called by | |
379 | * giving a command that requires subcommands. Also called by saying | |
380 | * just "help".) | |
381 | * | |
382 | * I am going to split this into two seperate comamnds, help_cmd and | |
383 | * help_list. | |
384 | */ | |
385 | ||
386 | void | |
387 | help_cmd (command, stream) | |
388 | char *command; | |
199b2450 | 389 | GDB_FILE *stream; |
dd3b648e RP |
390 | { |
391 | struct cmd_list_element *c; | |
392 | extern struct cmd_list_element *cmdlist; | |
393 | ||
394 | if (!command) | |
395 | { | |
396 | help_list (cmdlist, "", all_classes, stream); | |
397 | return; | |
398 | } | |
399 | ||
400 | c = lookup_cmd (&command, cmdlist, "", 0, 0); | |
401 | ||
402 | if (c == 0) | |
403 | return; | |
404 | ||
405 | /* There are three cases here. | |
406 | If c->prefixlist is nonzero, we have a prefix command. | |
407 | Print its documentation, then list its subcommands. | |
408 | ||
409 | If c->function is nonzero, we really have a command. | |
410 | Print its documentation and return. | |
411 | ||
412 | If c->function is zero, we have a class name. | |
413 | Print its documentation (as if it were a command) | |
414 | and then set class to the number of this class | |
415 | so that the commands in the class will be listed. */ | |
416 | ||
417 | fputs_filtered (c->doc, stream); | |
418 | fputs_filtered ("\n", stream); | |
419 | ||
1ab3bf1b | 420 | if (c->prefixlist == 0 && c->function.cfunc != NULL) |
dd3b648e RP |
421 | return; |
422 | fprintf_filtered (stream, "\n"); | |
423 | ||
424 | /* If this is a prefix command, print it's subcommands */ | |
425 | if (c->prefixlist) | |
426 | help_list (*c->prefixlist, c->prefixname, all_commands, stream); | |
427 | ||
428 | /* If this is a class name, print all of the commands in the class */ | |
1ab3bf1b | 429 | if (c->function.cfunc == NULL) |
dd3b648e | 430 | help_list (cmdlist, "", c->class, stream); |
a65841d7 JG |
431 | |
432 | if (c->hook) | |
433 | fprintf_filtered (stream, "\nThis command has a hook defined: %s\n", | |
434 | c->hook->name); | |
dd3b648e RP |
435 | } |
436 | ||
437 | /* | |
438 | * Get a specific kind of help on a command list. | |
439 | * | |
440 | * LIST is the list. | |
441 | * CMDTYPE is the prefix to use in the title string. | |
442 | * CLASS is the class with which to list the nodes of this list (see | |
443 | * documentation for help_cmd_list below), As usual, ALL_COMMANDS for | |
444 | * everything, ALL_CLASSES for just classes, and non-negative for only things | |
445 | * in a specific class. | |
446 | * and STREAM is the output stream on which to print things. | |
447 | * If you call this routine with a class >= 0, it recurses. | |
448 | */ | |
449 | void | |
450 | help_list (list, cmdtype, class, stream) | |
451 | struct cmd_list_element *list; | |
452 | char *cmdtype; | |
453 | enum command_class class; | |
199b2450 | 454 | GDB_FILE *stream; |
dd3b648e RP |
455 | { |
456 | int len; | |
457 | char *cmdtype1, *cmdtype2; | |
458 | ||
459 | /* If CMDTYPE is "foo ", CMDTYPE1 gets " foo" and CMDTYPE2 gets "foo sub" */ | |
460 | len = strlen (cmdtype); | |
461 | cmdtype1 = (char *) alloca (len + 1); | |
462 | cmdtype1[0] = 0; | |
463 | cmdtype2 = (char *) alloca (len + 4); | |
464 | cmdtype2[0] = 0; | |
465 | if (len) | |
466 | { | |
467 | cmdtype1[0] = ' '; | |
468 | strncpy (cmdtype1 + 1, cmdtype, len - 1); | |
469 | cmdtype1[len] = 0; | |
470 | strncpy (cmdtype2, cmdtype, len - 1); | |
471 | strcpy (cmdtype2 + len - 1, " sub"); | |
472 | } | |
473 | ||
474 | if (class == all_classes) | |
475 | fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2); | |
476 | else | |
477 | fprintf_filtered (stream, "List of %scommands:\n\n", cmdtype2); | |
478 | ||
479 | help_cmd_list (list, class, cmdtype, (int)class >= 0, stream); | |
480 | ||
481 | if (class == all_classes) | |
482 | fprintf_filtered (stream, "\n\ | |
483 | Type \"help%s\" followed by a class name for a list of commands in that class.", | |
484 | cmdtype1); | |
485 | ||
486 | fprintf_filtered (stream, "\n\ | |
487 | Type \"help%s\" followed by %scommand name for full documentation.\n\ | |
488 | Command name abbreviations are allowed if unambiguous.\n", | |
489 | cmdtype1, cmdtype2); | |
490 | } | |
491 | ||
492 | /* Print only the first line of STR on STREAM. */ | |
493 | static void | |
494 | print_doc_line (stream, str) | |
199b2450 | 495 | GDB_FILE *stream; |
dd3b648e RP |
496 | char *str; |
497 | { | |
498 | static char *line_buffer = 0; | |
499 | static int line_size; | |
500 | register char *p; | |
501 | ||
502 | if (!line_buffer) | |
503 | { | |
504 | line_size = 80; | |
505 | line_buffer = (char *) xmalloc (line_size); | |
506 | } | |
507 | ||
508 | p = str; | |
509 | while (*p && *p != '\n' && *p != '.' && *p != ',') | |
510 | p++; | |
511 | if (p - str > line_size - 1) | |
512 | { | |
513 | line_size = p - str + 1; | |
be772100 | 514 | free ((PTR)line_buffer); |
dd3b648e RP |
515 | line_buffer = (char *) xmalloc (line_size); |
516 | } | |
517 | strncpy (line_buffer, str, p - str); | |
518 | line_buffer[p - str] = '\0'; | |
519 | if (islower (line_buffer[0])) | |
520 | line_buffer[0] = toupper (line_buffer[0]); | |
521 | fputs_filtered (line_buffer, stream); | |
522 | } | |
523 | ||
524 | /* | |
525 | * Implement a help command on command list LIST. | |
526 | * RECURSE should be non-zero if this should be done recursively on | |
527 | * all sublists of LIST. | |
528 | * PREFIX is the prefix to print before each command name. | |
529 | * STREAM is the stream upon which the output should be written. | |
530 | * CLASS should be: | |
531 | * A non-negative class number to list only commands in that | |
532 | * class. | |
533 | * ALL_COMMANDS to list all commands in list. | |
534 | * ALL_CLASSES to list all classes in list. | |
535 | * | |
536 | * Note that RECURSE will be active on *all* sublists, not just the | |
1ab3bf1b | 537 | * ones selected by the criteria above (ie. the selection mechanism |
dd3b648e RP |
538 | * is at the low level, not the high-level). |
539 | */ | |
540 | void | |
541 | help_cmd_list (list, class, prefix, recurse, stream) | |
542 | struct cmd_list_element *list; | |
543 | enum command_class class; | |
544 | char *prefix; | |
545 | int recurse; | |
199b2450 | 546 | GDB_FILE *stream; |
dd3b648e RP |
547 | { |
548 | register struct cmd_list_element *c; | |
549 | ||
550 | for (c = list; c; c = c->next) | |
551 | { | |
552 | if (c->abbrev_flag == 0 && | |
553 | (class == all_commands | |
1ab3bf1b JG |
554 | || (class == all_classes && c->function.cfunc == NULL) |
555 | || (class == c->class && c->function.cfunc != NULL))) | |
dd3b648e RP |
556 | { |
557 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
558 | print_doc_line (stream, c->doc); | |
559 | fputs_filtered ("\n", stream); | |
560 | } | |
561 | if (recurse | |
562 | && c->prefixlist != 0 | |
563 | && c->abbrev_flag == 0) | |
564 | help_cmd_list (*c->prefixlist, class, c->prefixname, 1, stream); | |
565 | } | |
566 | } | |
567 | \f | |
311592ff FF |
568 | /* This routine takes a line of TEXT and a CLIST in which to start the |
569 | lookup. When it returns it will have incremented the text pointer past | |
570 | the section of text it matched, set *RESULT_LIST to point to the list in | |
571 | which the last word was matched, and will return a pointer to the cmd | |
572 | list element which the text matches. It will return NULL if no match at | |
573 | all was possible. It will return -1 (cast appropriately, ick) if ambigous | |
574 | matches are possible; in this case *RESULT_LIST will be set to point to | |
575 | the list in which there are ambiguous choices (and *TEXT will be set to | |
576 | the ambiguous text string). | |
dd3b648e | 577 | |
a65841d7 JG |
578 | If the located command was an abbreviation, this routine returns the base |
579 | command of the abbreviation. | |
580 | ||
dd3b648e RP |
581 | It does no error reporting whatsoever; control will always return |
582 | to the superior routine. | |
583 | ||
311592ff FF |
584 | In the case of an ambiguous return (-1), *RESULT_LIST will be set to point |
585 | at the prefix_command (ie. the best match) *or* (special case) will be NULL | |
586 | if no prefix command was ever found. For example, in the case of "info a", | |
587 | "info" matches without ambiguity, but "a" could be "args" or "address", so | |
588 | *RESULT_LIST is set to the cmd_list_element for "info". So in this case | |
589 | RESULT_LIST should not be interpeted as a pointer to the beginning of a | |
a32ebcfd JK |
590 | list; it simply points to a specific command. In the case of an ambiguous |
591 | return *TEXT is advanced past the last non-ambiguous prefix (e.g. | |
592 | "info t" can be "info types" or "info target"; upon return *TEXT has been | |
593 | advanced past "info "). | |
dd3b648e RP |
594 | |
595 | If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise | |
596 | affect the operation). | |
597 | ||
598 | This routine does *not* modify the text pointed to by TEXT. | |
599 | ||
311592ff FF |
600 | If IGNORE_HELP_CLASSES is nonzero, ignore any command list elements which |
601 | are actually help classes rather than commands (i.e. the function field of | |
602 | the struct cmd_list_element is NULL). */ | |
dd3b648e RP |
603 | |
604 | struct cmd_list_element * | |
605 | lookup_cmd_1 (text, clist, result_list, ignore_help_classes) | |
606 | char **text; | |
607 | struct cmd_list_element *clist, **result_list; | |
608 | int ignore_help_classes; | |
609 | { | |
610 | char *p, *command; | |
611 | int len, tmp, nfound; | |
612 | struct cmd_list_element *found, *c; | |
613 | ||
614 | while (**text == ' ' || **text == '\t') | |
615 | (*text)++; | |
616 | ||
617 | /* Treating underscores as part of command words is important | |
618 | so that "set args_foo()" doesn't get interpreted as | |
619 | "set args _foo()". */ | |
620 | for (p = *text; | |
621 | *p && (isalnum(*p) || *p == '-' || *p == '_'); | |
622 | p++) | |
623 | ; | |
624 | ||
625 | /* If nothing but whitespace, return 0. */ | |
626 | if (p == *text) | |
627 | return 0; | |
628 | ||
629 | len = p - *text; | |
630 | ||
631 | /* *text and p now bracket the first command word to lookup (and | |
632 | it's length is len). We copy this into a local temporary, | |
633 | converting to lower case as we go. */ | |
634 | ||
635 | command = (char *) alloca (len + 1); | |
636 | for (tmp = 0; tmp < len; tmp++) | |
637 | { | |
638 | char x = (*text)[tmp]; | |
5c71cf23 | 639 | command[tmp] = isupper(x) ? tolower(x) : x; |
dd3b648e RP |
640 | } |
641 | command[len] = '\0'; | |
642 | ||
643 | /* Look it up. */ | |
644 | found = 0; | |
645 | nfound = 0; | |
646 | for (c = clist; c; c = c->next) | |
647 | if (!strncmp (command, c->name, len) | |
1ab3bf1b | 648 | && (!ignore_help_classes || c->function.cfunc)) |
dd3b648e RP |
649 | { |
650 | found = c; | |
651 | nfound++; | |
652 | if (c->name[len] == '\0') | |
653 | { | |
654 | nfound = 1; | |
655 | break; | |
656 | } | |
657 | } | |
658 | ||
659 | /* If nothing matches, we have a simple failure. */ | |
660 | if (nfound == 0) | |
661 | return 0; | |
662 | ||
663 | if (nfound > 1) | |
664 | { | |
665 | if (result_list != NULL) | |
666 | /* Will be modified in calling routine | |
667 | if we know what the prefix command is. */ | |
668 | *result_list = 0; | |
669 | return (struct cmd_list_element *) -1; /* Ambiguous. */ | |
670 | } | |
671 | ||
672 | /* We've matched something on this list. Move text pointer forward. */ | |
673 | ||
674 | *text = p; | |
a65841d7 JG |
675 | |
676 | /* If this was an abbreviation, use the base command instead. */ | |
677 | ||
678 | if (found->cmd_pointer) | |
679 | found = found->cmd_pointer; | |
680 | ||
681 | /* If we found a prefix command, keep looking. */ | |
682 | ||
dd3b648e RP |
683 | if (found->prefixlist) |
684 | { | |
685 | c = lookup_cmd_1 (text, *found->prefixlist, result_list, | |
686 | ignore_help_classes); | |
687 | if (!c) | |
688 | { | |
689 | /* Didn't find anything; this is as far as we got. */ | |
690 | if (result_list != NULL) | |
691 | *result_list = clist; | |
692 | return found; | |
693 | } | |
694 | else if (c == (struct cmd_list_element *) -1) | |
695 | { | |
36ad9bd5 | 696 | /* We've gotten this far properly, but the next step |
dd3b648e RP |
697 | is ambiguous. We need to set the result list to the best |
698 | we've found (if an inferior hasn't already set it). */ | |
699 | if (result_list != NULL) | |
700 | if (!*result_list) | |
701 | /* This used to say *result_list = *found->prefixlist | |
702 | If that was correct, need to modify the documentation | |
703 | at the top of this function to clarify what is supposed | |
704 | to be going on. */ | |
705 | *result_list = found; | |
706 | return c; | |
707 | } | |
708 | else | |
709 | { | |
710 | /* We matched! */ | |
711 | return c; | |
712 | } | |
713 | } | |
714 | else | |
715 | { | |
716 | if (result_list != NULL) | |
717 | *result_list = clist; | |
718 | return found; | |
719 | } | |
720 | } | |
721 | ||
81066208 JG |
722 | /* All this hair to move the space to the front of cmdtype */ |
723 | ||
1ab3bf1b | 724 | static void |
81066208 JG |
725 | undef_cmd_error (cmdtype, q) |
726 | char *cmdtype, *q; | |
727 | { | |
728 | error ("Undefined %scommand: \"%s\". Try \"help%s%.*s\".", | |
729 | cmdtype, | |
730 | q, | |
731 | *cmdtype? " ": "", | |
732 | strlen(cmdtype)-1, | |
733 | cmdtype); | |
734 | } | |
735 | ||
dd3b648e RP |
736 | /* Look up the contents of *LINE as a command in the command list LIST. |
737 | LIST is a chain of struct cmd_list_element's. | |
738 | If it is found, return the struct cmd_list_element for that command | |
739 | and update *LINE to point after the command name, at the first argument. | |
740 | If not found, call error if ALLOW_UNKNOWN is zero | |
741 | otherwise (or if error returns) return zero. | |
742 | Call error if specified command is ambiguous, | |
743 | unless ALLOW_UNKNOWN is negative. | |
744 | CMDTYPE precedes the word "command" in the error message. | |
745 | ||
746 | If INGNORE_HELP_CLASSES is nonzero, ignore any command list | |
747 | elements which are actually help classes rather than commands (i.e. | |
748 | the function field of the struct cmd_list_element is 0). */ | |
749 | ||
750 | struct cmd_list_element * | |
751 | lookup_cmd (line, list, cmdtype, allow_unknown, ignore_help_classes) | |
752 | char **line; | |
753 | struct cmd_list_element *list; | |
754 | char *cmdtype; | |
755 | int allow_unknown; | |
756 | int ignore_help_classes; | |
757 | { | |
758 | struct cmd_list_element *last_list = 0; | |
759 | struct cmd_list_element *c = | |
760 | lookup_cmd_1 (line, list, &last_list, ignore_help_classes); | |
09973223 JK |
761 | #if 0 |
762 | /* This is wrong for complete_command. */ | |
dd3b648e RP |
763 | char *ptr = (*line) + strlen (*line) - 1; |
764 | ||
765 | /* Clear off trailing whitespace. */ | |
766 | while (ptr >= *line && (*ptr == ' ' || *ptr == '\t')) | |
767 | ptr--; | |
768 | *(ptr + 1) = '\0'; | |
09973223 | 769 | #endif |
dd3b648e RP |
770 | |
771 | if (!c) | |
772 | { | |
773 | if (!allow_unknown) | |
774 | { | |
775 | if (!*line) | |
776 | error ("Lack of needed %scommand", cmdtype); | |
777 | else | |
778 | { | |
779 | char *p = *line, *q; | |
780 | ||
781 | while (isalnum(*p) || *p == '-') | |
782 | p++; | |
783 | ||
784 | q = (char *) alloca (p - *line + 1); | |
785 | strncpy (q, *line, p - *line); | |
36ad9bd5 | 786 | q[p - *line] = '\0'; |
81066208 | 787 | undef_cmd_error (cmdtype, q); |
dd3b648e RP |
788 | } |
789 | } | |
790 | else | |
791 | return 0; | |
792 | } | |
793 | else if (c == (struct cmd_list_element *) -1) | |
794 | { | |
795 | /* Ambigous. Local values should be off prefixlist or called | |
796 | values. */ | |
797 | int local_allow_unknown = (last_list ? last_list->allow_unknown : | |
798 | allow_unknown); | |
799 | char *local_cmdtype = last_list ? last_list->prefixname : cmdtype; | |
800 | struct cmd_list_element *local_list = | |
801 | (last_list ? *(last_list->prefixlist) : list); | |
802 | ||
803 | if (local_allow_unknown < 0) | |
804 | { | |
805 | if (last_list) | |
806 | return last_list; /* Found something. */ | |
807 | else | |
808 | return 0; /* Found nothing. */ | |
809 | } | |
810 | else | |
811 | { | |
812 | /* Report as error. */ | |
813 | int amb_len; | |
814 | char ambbuf[100]; | |
815 | ||
816 | for (amb_len = 0; | |
817 | ((*line)[amb_len] && (*line)[amb_len] != ' ' | |
818 | && (*line)[amb_len] != '\t'); | |
819 | amb_len++) | |
820 | ; | |
821 | ||
822 | ambbuf[0] = 0; | |
823 | for (c = local_list; c; c = c->next) | |
824 | if (!strncmp (*line, c->name, amb_len)) | |
825 | { | |
826 | if (strlen (ambbuf) + strlen (c->name) + 6 < (int)sizeof ambbuf) | |
827 | { | |
828 | if (strlen (ambbuf)) | |
829 | strcat (ambbuf, ", "); | |
830 | strcat (ambbuf, c->name); | |
831 | } | |
832 | else | |
833 | { | |
834 | strcat (ambbuf, ".."); | |
835 | break; | |
836 | } | |
837 | } | |
838 | error ("Ambiguous %scommand \"%s\": %s.", local_cmdtype, | |
839 | *line, ambbuf); | |
840 | return 0; /* lint */ | |
841 | } | |
842 | } | |
843 | else | |
844 | { | |
845 | /* We've got something. It may still not be what the caller | |
846 | wants (if this command *needs* a subcommand). */ | |
847 | while (**line == ' ' || **line == '\t') | |
848 | (*line)++; | |
849 | ||
850 | if (c->prefixlist && **line && !c->allow_unknown) | |
81066208 | 851 | undef_cmd_error (c->prefixname, *line); |
dd3b648e RP |
852 | |
853 | /* Seems to be what he wants. Return it. */ | |
854 | return c; | |
855 | } | |
856 | return 0; | |
857 | } | |
858 | ||
859 | #if 0 | |
860 | /* Look up the contents of *LINE as a command in the command list LIST. | |
861 | LIST is a chain of struct cmd_list_element's. | |
862 | If it is found, return the struct cmd_list_element for that command | |
863 | and update *LINE to point after the command name, at the first argument. | |
864 | If not found, call error if ALLOW_UNKNOWN is zero | |
865 | otherwise (or if error returns) return zero. | |
866 | Call error if specified command is ambiguous, | |
867 | unless ALLOW_UNKNOWN is negative. | |
868 | CMDTYPE precedes the word "command" in the error message. */ | |
869 | ||
870 | struct cmd_list_element * | |
871 | lookup_cmd (line, list, cmdtype, allow_unknown) | |
872 | char **line; | |
873 | struct cmd_list_element *list; | |
874 | char *cmdtype; | |
875 | int allow_unknown; | |
876 | { | |
877 | register char *p; | |
878 | register struct cmd_list_element *c, *found; | |
879 | int nfound; | |
880 | char ambbuf[100]; | |
881 | char *processed_cmd; | |
882 | int i, cmd_len; | |
883 | ||
884 | /* Skip leading whitespace. */ | |
885 | ||
886 | while (**line == ' ' || **line == '\t') | |
887 | (*line)++; | |
888 | ||
889 | /* Clear out trailing whitespace. */ | |
890 | ||
891 | p = *line + strlen (*line); | |
892 | while (p != *line && (p[-1] == ' ' || p[-1] == '\t')) | |
893 | p--; | |
894 | *p = 0; | |
895 | ||
896 | /* Find end of command name. */ | |
897 | ||
898 | p = *line; | |
5c71cf23 | 899 | while (*p == '-' || isalnum(*p)) |
dd3b648e RP |
900 | p++; |
901 | ||
902 | /* Look up the command name. | |
903 | If exact match, keep that. | |
904 | Otherwise, take command abbreviated, if unique. Note that (in my | |
905 | opinion) a null string does *not* indicate ambiguity; simply the | |
906 | end of the argument. */ | |
907 | ||
908 | if (p == *line) | |
909 | { | |
910 | if (!allow_unknown) | |
911 | error ("Lack of needed %scommand", cmdtype); | |
912 | return 0; | |
913 | } | |
914 | ||
915 | /* Copy over to a local buffer, converting to lowercase on the way. | |
916 | This is in case the command being parsed is a subcommand which | |
917 | doesn't match anything, and that's ok. We want the original | |
918 | untouched for the routine of the original command. */ | |
919 | ||
920 | processed_cmd = (char *) alloca (p - *line + 1); | |
921 | for (cmd_len = 0; cmd_len < p - *line; cmd_len++) | |
922 | { | |
923 | char x = (*line)[cmd_len]; | |
5c71cf23 PB |
924 | if (isupper(x)) |
925 | processed_cmd[cmd_len] = tolower(x); | |
dd3b648e RP |
926 | else |
927 | processed_cmd[cmd_len] = x; | |
928 | } | |
929 | processed_cmd[cmd_len] = '\0'; | |
930 | ||
931 | /* Check all possibilities in the current command list. */ | |
932 | found = 0; | |
933 | nfound = 0; | |
934 | for (c = list; c; c = c->next) | |
935 | { | |
936 | if (!strncmp (processed_cmd, c->name, cmd_len)) | |
937 | { | |
938 | found = c; | |
939 | nfound++; | |
940 | if (c->name[cmd_len] == 0) | |
941 | { | |
942 | nfound = 1; | |
943 | break; | |
944 | } | |
945 | } | |
946 | } | |
947 | ||
948 | /* Report error for undefined command name. */ | |
949 | ||
950 | if (nfound != 1) | |
951 | { | |
952 | if (nfound > 1 && allow_unknown >= 0) | |
953 | { | |
954 | ambbuf[0] = 0; | |
955 | for (c = list; c; c = c->next) | |
956 | if (!strncmp (processed_cmd, c->name, cmd_len)) | |
957 | { | |
958 | if (strlen (ambbuf) + strlen (c->name) + 6 < sizeof ambbuf) | |
959 | { | |
960 | if (strlen (ambbuf)) | |
961 | strcat (ambbuf, ", "); | |
962 | strcat (ambbuf, c->name); | |
963 | } | |
964 | else | |
965 | { | |
966 | strcat (ambbuf, ".."); | |
967 | break; | |
968 | } | |
969 | } | |
970 | error ("Ambiguous %scommand \"%s\": %s.", cmdtype, | |
971 | processed_cmd, ambbuf); | |
972 | } | |
973 | else if (!allow_unknown) | |
974 | error ("Undefined %scommand: \"%s\".", cmdtype, processed_cmd); | |
975 | return 0; | |
976 | } | |
977 | ||
978 | /* Skip whitespace before the argument. */ | |
979 | ||
980 | while (*p == ' ' || *p == '\t') p++; | |
981 | *line = p; | |
982 | ||
983 | if (found->prefixlist && *p) | |
984 | { | |
985 | c = lookup_cmd (line, *found->prefixlist, found->prefixname, | |
986 | found->allow_unknown); | |
987 | if (c) | |
988 | return c; | |
989 | } | |
990 | ||
991 | return found; | |
992 | } | |
993 | #endif | |
994 | ||
995 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
996 | ||
997 | /* Return a vector of char pointers which point to the different | |
a32ebcfd JK |
998 | possible completions in LIST of TEXT. |
999 | ||
1000 | WORD points in the same buffer as TEXT, and completions should be | |
1001 | returned relative to this position. For example, suppose TEXT is "foo" | |
1002 | and we want to complete to "foobar". If WORD is "oo", return | |
1003 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
dd3b648e RP |
1004 | |
1005 | char ** | |
a32ebcfd | 1006 | complete_on_cmdlist (list, text, word) |
dd3b648e RP |
1007 | struct cmd_list_element *list; |
1008 | char *text; | |
a32ebcfd | 1009 | char *word; |
dd3b648e RP |
1010 | { |
1011 | struct cmd_list_element *ptr; | |
1012 | char **matchlist; | |
1013 | int sizeof_matchlist; | |
1014 | int matches; | |
1015 | int textlen = strlen (text); | |
1016 | ||
1017 | sizeof_matchlist = 10; | |
1018 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1019 | matches = 0; | |
1020 | ||
1021 | for (ptr = list; ptr; ptr = ptr->next) | |
1022 | if (!strncmp (ptr->name, text, textlen) | |
1023 | && !ptr->abbrev_flag | |
1ab3bf1b | 1024 | && (ptr->function.cfunc |
dd3b648e RP |
1025 | || ptr->prefixlist)) |
1026 | { | |
1027 | if (matches == sizeof_matchlist) | |
1028 | { | |
1029 | sizeof_matchlist *= 2; | |
1030 | matchlist = (char **) xrealloc ((char *)matchlist, | |
1031 | (sizeof_matchlist | |
1032 | * sizeof (char *))); | |
1033 | } | |
1034 | ||
1035 | matchlist[matches] = (char *) | |
a32ebcfd JK |
1036 | xmalloc (strlen (word) + strlen (ptr->name) + 1); |
1037 | if (word == text) | |
1038 | strcpy (matchlist[matches], ptr->name); | |
1039 | else if (word > text) | |
1040 | { | |
1041 | /* Return some portion of ptr->name. */ | |
1042 | strcpy (matchlist[matches], ptr->name + (word - text)); | |
1043 | } | |
1044 | else | |
1045 | { | |
1046 | /* Return some of text plus ptr->name. */ | |
1047 | strncpy (matchlist[matches], word, text - word); | |
1048 | matchlist[matches][text - word] = '\0'; | |
1049 | strcat (matchlist[matches], ptr->name); | |
1050 | } | |
1051 | ++matches; | |
dd3b648e RP |
1052 | } |
1053 | ||
1054 | if (matches == 0) | |
1055 | { | |
be772100 | 1056 | free ((PTR)matchlist); |
dd3b648e RP |
1057 | matchlist = 0; |
1058 | } | |
1059 | else | |
1060 | { | |
1061 | matchlist = (char **) xrealloc ((char *)matchlist, ((matches + 1) | |
1062 | * sizeof (char *))); | |
1063 | matchlist[matches] = (char *) 0; | |
1064 | } | |
1065 | ||
1066 | return matchlist; | |
1067 | } | |
1068 | ||
236274b9 SG |
1069 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ |
1070 | ||
1071 | /* Return a vector of char pointers which point to the different | |
1072 | possible completions in CMD of TEXT. | |
1073 | ||
1074 | WORD points in the same buffer as TEXT, and completions should be | |
1075 | returned relative to this position. For example, suppose TEXT is "foo" | |
1076 | and we want to complete to "foobar". If WORD is "oo", return | |
1077 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1078 | ||
1079 | char ** | |
1080 | complete_on_enum (enumlist, text, word) | |
1081 | char **enumlist; | |
1082 | char *text; | |
1083 | char *word; | |
1084 | { | |
1085 | char **matchlist; | |
1086 | int sizeof_matchlist; | |
1087 | int matches; | |
1088 | int textlen = strlen (text); | |
1089 | int i; | |
1090 | char *name; | |
1091 | ||
1092 | sizeof_matchlist = 10; | |
1093 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1094 | matches = 0; | |
1095 | ||
b52cac6b | 1096 | for (i = 0; (name = enumlist[i]) != NULL; i++) |
236274b9 SG |
1097 | if (strncmp (name, text, textlen) == 0) |
1098 | { | |
1099 | if (matches == sizeof_matchlist) | |
1100 | { | |
1101 | sizeof_matchlist *= 2; | |
1102 | matchlist = (char **) xrealloc ((char *)matchlist, | |
1103 | (sizeof_matchlist | |
1104 | * sizeof (char *))); | |
1105 | } | |
1106 | ||
1107 | matchlist[matches] = (char *) | |
1108 | xmalloc (strlen (word) + strlen (name) + 1); | |
1109 | if (word == text) | |
1110 | strcpy (matchlist[matches], name); | |
1111 | else if (word > text) | |
1112 | { | |
1113 | /* Return some portion of name. */ | |
1114 | strcpy (matchlist[matches], name + (word - text)); | |
1115 | } | |
1116 | else | |
1117 | { | |
1118 | /* Return some of text plus name. */ | |
1119 | strncpy (matchlist[matches], word, text - word); | |
1120 | matchlist[matches][text - word] = '\0'; | |
1121 | strcat (matchlist[matches], name); | |
1122 | } | |
1123 | ++matches; | |
1124 | } | |
1125 | ||
1126 | if (matches == 0) | |
1127 | { | |
1128 | free ((PTR)matchlist); | |
1129 | matchlist = 0; | |
1130 | } | |
1131 | else | |
1132 | { | |
1133 | matchlist = (char **) xrealloc ((char *)matchlist, ((matches + 1) | |
1134 | * sizeof (char *))); | |
1135 | matchlist[matches] = (char *) 0; | |
1136 | } | |
1137 | ||
1138 | return matchlist; | |
1139 | } | |
1140 | ||
dd3b648e RP |
1141 | static int |
1142 | parse_binary_operation (arg) | |
1143 | char *arg; | |
1144 | { | |
1145 | int length; | |
1146 | ||
1147 | if (!arg || !*arg) | |
1148 | return 1; | |
1149 | ||
1150 | length = strlen (arg); | |
1151 | ||
1152 | while (arg[length - 1] == ' ' || arg[length - 1] == '\t') | |
1153 | length--; | |
1154 | ||
1155 | if (!strncmp (arg, "on", length) | |
1156 | || !strncmp (arg, "1", length) | |
1157 | || !strncmp (arg, "yes", length)) | |
1158 | return 1; | |
1159 | else | |
1160 | if (!strncmp (arg, "off", length) | |
1161 | || !strncmp (arg, "0", length) | |
1162 | || !strncmp (arg, "no", length)) | |
1163 | return 0; | |
1164 | else | |
1165 | { | |
1166 | error ("\"on\" or \"off\" expected."); | |
1167 | return 0; | |
1168 | } | |
1169 | } | |
1170 | ||
1171 | /* Do a "set" or "show" command. ARG is NULL if no argument, or the text | |
1172 | of the argument, and FROM_TTY is nonzero if this command is being entered | |
1173 | directly by the user (i.e. these are just like any other | |
1174 | command). C is the command list element for the command. */ | |
1175 | void | |
1176 | do_setshow_command (arg, from_tty, c) | |
1177 | char *arg; | |
1178 | int from_tty; | |
1179 | struct cmd_list_element *c; | |
1180 | { | |
1181 | if (c->type == set_cmd) | |
1182 | { | |
1183 | switch (c->var_type) | |
1184 | { | |
1185 | case var_string: | |
1186 | { | |
1187 | char *new; | |
1188 | char *p; | |
1189 | char *q; | |
1190 | int ch; | |
1191 | ||
1192 | if (arg == NULL) | |
1193 | arg = ""; | |
1194 | new = (char *) xmalloc (strlen (arg) + 2); | |
1195 | p = arg; q = new; | |
1ab3bf1b | 1196 | while ((ch = *p++) != '\000') |
dd3b648e RP |
1197 | { |
1198 | if (ch == '\\') | |
1199 | { | |
1200 | /* \ at end of argument is used after spaces | |
1201 | so they won't be lost. */ | |
72e35288 JK |
1202 | /* This is obsolete now that we no longer strip |
1203 | trailing whitespace and actually, the backslash | |
1204 | didn't get here in my test, readline or | |
1205 | something did something funky with a backslash | |
1206 | right before a newline. */ | |
dd3b648e RP |
1207 | if (*p == 0) |
1208 | break; | |
1209 | ch = parse_escape (&p); | |
1210 | if (ch == 0) | |
1211 | break; /* C loses */ | |
1212 | else if (ch > 0) | |
1213 | *q++ = ch; | |
1214 | } | |
1215 | else | |
1216 | *q++ = ch; | |
1217 | } | |
72e35288 | 1218 | #if 0 |
dd3b648e RP |
1219 | if (*(p - 1) != '\\') |
1220 | *q++ = ' '; | |
72e35288 | 1221 | #endif |
dd3b648e RP |
1222 | *q++ = '\0'; |
1223 | new = (char *) xrealloc (new, q - new); | |
1224 | if (*(char **)c->var != NULL) | |
1225 | free (*(char **)c->var); | |
1226 | *(char **) c->var = new; | |
1227 | } | |
1228 | break; | |
1229 | case var_string_noescape: | |
1230 | if (arg == NULL) | |
1231 | arg = ""; | |
1232 | if (*(char **)c->var != NULL) | |
1233 | free (*(char **)c->var); | |
1234 | *(char **) c->var = savestring (arg, strlen (arg)); | |
1235 | break; | |
1236 | case var_filename: | |
1237 | if (arg == NULL) | |
1238 | error_no_arg ("filename to set it to."); | |
1239 | if (*(char **)c->var != NULL) | |
1240 | free (*(char **)c->var); | |
1241 | *(char **)c->var = tilde_expand (arg); | |
1242 | break; | |
1243 | case var_boolean: | |
1244 | *(int *) c->var = parse_binary_operation (arg); | |
1245 | break; | |
1246 | case var_uinteger: | |
1247 | if (arg == NULL) | |
1248 | error_no_arg ("integer to set it to."); | |
4966c17c JG |
1249 | *(unsigned int *) c->var = parse_and_eval_address (arg); |
1250 | if (*(unsigned int *) c->var == 0) | |
1251 | *(unsigned int *) c->var = UINT_MAX; | |
dd3b648e | 1252 | break; |
359a097f JK |
1253 | case var_integer: |
1254 | { | |
1255 | unsigned int val; | |
1256 | if (arg == NULL) | |
1257 | error_no_arg ("integer to set it to."); | |
1258 | val = parse_and_eval_address (arg); | |
1259 | if (val == 0) | |
1260 | *(int *) c->var = INT_MAX; | |
1261 | else if (val >= INT_MAX) | |
1262 | error ("integer %u out of range", val); | |
1263 | else | |
1264 | *(int *) c->var = val; | |
1265 | break; | |
1266 | } | |
dd3b648e RP |
1267 | case var_zinteger: |
1268 | if (arg == NULL) | |
1269 | error_no_arg ("integer to set it to."); | |
1270 | *(int *) c->var = parse_and_eval_address (arg); | |
1271 | break; | |
236274b9 SG |
1272 | case var_enum: |
1273 | { | |
1274 | int i; | |
1275 | int len; | |
1276 | int nmatches; | |
efaf2b58 | 1277 | char *match = NULL; |
236274b9 SG |
1278 | char *p; |
1279 | ||
1d7a3fd7 MH |
1280 | /* if no argument was supplied, print an informative error message */ |
1281 | if (arg == NULL) | |
1282 | { | |
1283 | char msg[1024]; | |
1284 | strcpy (msg, "Requires an argument. Valid arguments are "); | |
1285 | for (i = 0; c->enums[i]; i++) | |
1286 | { | |
1287 | if (i != 0) | |
1288 | strcat (msg, ", "); | |
1289 | strcat (msg, c->enums[i]); | |
1290 | } | |
1291 | strcat (msg, "."); | |
1292 | error (msg); | |
1293 | } | |
236274b9 | 1294 | |
1d7a3fd7 MH |
1295 | p = strchr (arg, ' '); |
1296 | ||
236274b9 SG |
1297 | if (p) |
1298 | len = p - arg; | |
1299 | else | |
1300 | len = strlen (arg); | |
1301 | ||
1302 | nmatches = 0; | |
1303 | for (i = 0; c->enums[i]; i++) | |
1304 | if (strncmp (arg, c->enums[i], len) == 0) | |
1305 | { | |
1306 | match = c->enums[i]; | |
1307 | nmatches++; | |
1308 | } | |
1309 | ||
1310 | if (nmatches <= 0) | |
1311 | error ("Undefined item: \"%s\".", arg); | |
1312 | ||
1313 | if (nmatches > 1) | |
1314 | error ("Ambiguous item \"%s\".", arg); | |
1315 | ||
1316 | *(char **)c->var = match; | |
1317 | } | |
1318 | break; | |
dd3b648e RP |
1319 | default: |
1320 | error ("gdb internal error: bad var_type in do_setshow_command"); | |
1321 | } | |
1322 | } | |
1323 | else if (c->type == show_cmd) | |
1324 | { | |
1325 | /* Print doc minus "show" at start. */ | |
199b2450 | 1326 | print_doc_line (gdb_stdout, c->doc + 5); |
dd3b648e | 1327 | |
199b2450 | 1328 | fputs_filtered (" is ", gdb_stdout); |
dd3b648e RP |
1329 | wrap_here (" "); |
1330 | switch (c->var_type) | |
1331 | { | |
1332 | case var_string: | |
1333 | { | |
1334 | unsigned char *p; | |
76420d46 | 1335 | |
199b2450 | 1336 | fputs_filtered ("\"", gdb_stdout); |
76420d46 SG |
1337 | if (*(unsigned char **)c->var) |
1338 | for (p = *(unsigned char **) c->var; *p != '\0'; p++) | |
1339 | gdb_printchar (*p, gdb_stdout, '"'); | |
199b2450 | 1340 | fputs_filtered ("\"", gdb_stdout); |
dd3b648e RP |
1341 | } |
1342 | break; | |
1343 | case var_string_noescape: | |
1344 | case var_filename: | |
236274b9 | 1345 | case var_enum: |
199b2450 | 1346 | fputs_filtered ("\"", gdb_stdout); |
76420d46 SG |
1347 | if (*(char **)c->var) |
1348 | fputs_filtered (*(char **) c->var, gdb_stdout); | |
199b2450 | 1349 | fputs_filtered ("\"", gdb_stdout); |
dd3b648e RP |
1350 | break; |
1351 | case var_boolean: | |
199b2450 | 1352 | fputs_filtered (*(int *) c->var ? "on" : "off", gdb_stdout); |
dd3b648e RP |
1353 | break; |
1354 | case var_uinteger: | |
1355 | if (*(unsigned int *) c->var == UINT_MAX) { | |
199b2450 | 1356 | fputs_filtered ("unlimited", gdb_stdout); |
dd3b648e RP |
1357 | break; |
1358 | } | |
1359 | /* else fall through */ | |
1360 | case var_zinteger: | |
199b2450 | 1361 | fprintf_filtered (gdb_stdout, "%u", *(unsigned int *) c->var); |
dd3b648e | 1362 | break; |
359a097f JK |
1363 | case var_integer: |
1364 | if (*(int *) c->var == INT_MAX) | |
1365 | { | |
199b2450 | 1366 | fputs_filtered ("unlimited", gdb_stdout); |
359a097f JK |
1367 | } |
1368 | else | |
199b2450 | 1369 | fprintf_filtered (gdb_stdout, "%d", *(int *) c->var); |
359a097f JK |
1370 | break; |
1371 | ||
dd3b648e RP |
1372 | default: |
1373 | error ("gdb internal error: bad var_type in do_setshow_command"); | |
1374 | } | |
199b2450 | 1375 | fputs_filtered (".\n", gdb_stdout); |
dd3b648e RP |
1376 | } |
1377 | else | |
1378 | error ("gdb internal error: bad cmd_type in do_setshow_command"); | |
1ab3bf1b | 1379 | (*c->function.sfunc) (NULL, from_tty, c); |
dd3b648e RP |
1380 | } |
1381 | ||
1382 | /* Show all the settings in a list of show commands. */ | |
1383 | ||
1384 | void | |
1385 | cmd_show_list (list, from_tty, prefix) | |
1386 | struct cmd_list_element *list; | |
1387 | int from_tty; | |
1388 | char *prefix; | |
1389 | { | |
1390 | for (; list != NULL; list = list->next) { | |
1391 | /* If we find a prefix, run its list, prefixing our output by its | |
1392 | prefix (with "show " skipped). */ | |
1393 | if (list->prefixlist && !list->abbrev_flag) | |
1394 | cmd_show_list (*list->prefixlist, from_tty, list->prefixname + 5); | |
1395 | if (list->type == show_cmd) | |
1396 | { | |
199b2450 TL |
1397 | fputs_filtered (prefix, gdb_stdout); |
1398 | fputs_filtered (list->name, gdb_stdout); | |
1399 | fputs_filtered (": ", gdb_stdout); | |
dd3b648e RP |
1400 | do_setshow_command ((char *)NULL, from_tty, list); |
1401 | } | |
1402 | } | |
1403 | } | |
1404 | ||
e1ce8aa5 | 1405 | /* ARGSUSED */ |
dd3b648e RP |
1406 | static void |
1407 | shell_escape (arg, from_tty) | |
1408 | char *arg; | |
1409 | int from_tty; | |
1410 | { | |
87237c52 JK |
1411 | #ifdef CANT_FORK |
1412 | /* FIXME: what about errors (I don't know how GO32 system() handles | |
1413 | them)? */ | |
1414 | system (arg); | |
1415 | #else /* Can fork. */ | |
dd3b648e RP |
1416 | int rc, status, pid; |
1417 | char *p, *user_shell; | |
dd3b648e RP |
1418 | |
1419 | if ((user_shell = (char *) getenv ("SHELL")) == NULL) | |
1420 | user_shell = "/bin/sh"; | |
1421 | ||
1422 | /* Get the name of the shell for arg0 */ | |
1ab3bf1b | 1423 | if ((p = strrchr (user_shell, '/')) == NULL) |
dd3b648e RP |
1424 | p = user_shell; |
1425 | else | |
1426 | p++; /* Get past '/' */ | |
1427 | ||
1428 | if ((pid = fork()) == 0) | |
1429 | { | |
1430 | if (!arg) | |
1431 | execl (user_shell, p, 0); | |
1432 | else | |
1433 | execl (user_shell, p, "-c", arg, 0); | |
1434 | ||
5b3591ab JK |
1435 | fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell, |
1436 | safe_strerror (errno)); | |
1437 | gdb_flush (gdb_stderr); | |
1438 | _exit (0177); | |
dd3b648e RP |
1439 | } |
1440 | ||
1441 | if (pid != -1) | |
1442 | while ((rc = wait (&status)) != pid && rc != -1) | |
1443 | ; | |
1444 | else | |
1445 | error ("Fork failed"); | |
87237c52 | 1446 | #endif /* Can fork. */ |
dd3b648e RP |
1447 | } |
1448 | ||
1449 | static void | |
1450 | make_command (arg, from_tty) | |
1451 | char *arg; | |
1452 | int from_tty; | |
1453 | { | |
1454 | char *p; | |
1455 | ||
1456 | if (arg == 0) | |
1457 | p = "make"; | |
1458 | else | |
1459 | { | |
1460 | p = xmalloc (sizeof("make ") + strlen(arg)); | |
1461 | strcpy (p, "make "); | |
1462 | strcpy (p + sizeof("make ")-1, arg); | |
1463 | } | |
1464 | ||
1465 | shell_escape (p, from_tty); | |
1466 | } | |
1467 | ||
3f2e006b | 1468 | static void |
4369a140 | 1469 | show_user_1 (c, stream) |
3f2e006b | 1470 | struct cmd_list_element *c; |
199b2450 | 1471 | GDB_FILE *stream; |
3f2e006b JG |
1472 | { |
1473 | register struct command_line *cmdlines; | |
1474 | ||
1475 | cmdlines = c->user_commands; | |
1476 | if (!cmdlines) | |
1477 | return; | |
3021c40d JG |
1478 | fputs_filtered ("User command ", stream); |
1479 | fputs_filtered (c->name, stream); | |
1480 | fputs_filtered (":\n", stream); | |
59528079 | 1481 | |
3f2e006b JG |
1482 | while (cmdlines) |
1483 | { | |
59528079 | 1484 | print_command_line (cmdlines, 4); |
3f2e006b JG |
1485 | cmdlines = cmdlines->next; |
1486 | } | |
1487 | fputs_filtered ("\n", stream); | |
1488 | } | |
1489 | ||
1490 | /* ARGSUSED */ | |
1491 | static void | |
4369a140 | 1492 | show_user (args, from_tty) |
3f2e006b JG |
1493 | char *args; |
1494 | int from_tty; | |
1495 | { | |
1496 | struct cmd_list_element *c; | |
1497 | extern struct cmd_list_element *cmdlist; | |
1498 | ||
1499 | if (args) | |
1500 | { | |
1501 | c = lookup_cmd (&args, cmdlist, "", 0, 1); | |
1502 | if (c->class != class_user) | |
1503 | error ("Not a user command."); | |
199b2450 | 1504 | show_user_1 (c, gdb_stdout); |
3f2e006b JG |
1505 | } |
1506 | else | |
1507 | { | |
1508 | for (c = cmdlist; c; c = c->next) | |
1509 | { | |
1510 | if (c->class == class_user) | |
199b2450 | 1511 | show_user_1 (c, gdb_stdout); |
3f2e006b JG |
1512 | } |
1513 | } | |
1514 | } | |
1515 | ||
dd3b648e RP |
1516 | void |
1517 | _initialize_command () | |
1518 | { | |
1519 | add_com ("shell", class_support, shell_escape, | |
1520 | "Execute the rest of the line as a shell command. \n\ | |
1521 | With no arguments, run an inferior shell."); | |
dd3b648e RP |
1522 | add_com ("make", class_support, make_command, |
1523 | "Run the ``make'' program using the rest of the line as arguments."); | |
4369a140 JG |
1524 | add_cmd ("user", no_class, show_user, |
1525 | "Show definitions of user defined commands.\n\ | |
3f2e006b | 1526 | Argument is the name of the user defined command.\n\ |
4369a140 | 1527 | With no argument, show definitions of all user defined commands.", &showlist); |
dd3b648e | 1528 | } |