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c906108c SS |
1 | /* Handle lists of commands, their decoding and documentation, for GDB. |
2 | Copyright 1986, 1989, 1990, 1991, 1998 Free Software Foundation, Inc. | |
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" | |
25 | #ifdef HAVE_UNISTD_H | |
26 | #include <unistd.h> | |
27 | #endif | |
28 | ||
29 | #ifdef HAVE_WAIT_H | |
c5aa993b | 30 | #include <wait.h> |
c906108c | 31 | #else |
c5aa993b JM |
32 | #ifdef HAVE_SYS_WAIT_H |
33 | #include <sys/wait.h> | |
34 | #endif | |
c906108c SS |
35 | #endif |
36 | ||
37 | #include "wait.h" | |
38 | ||
53a5351d JM |
39 | /* FIXME: this should be auto-configured! */ |
40 | #ifdef __MSDOS__ | |
41 | # define CANT_FORK | |
42 | #endif | |
43 | ||
c906108c SS |
44 | /* Prototypes for local functions */ |
45 | ||
46 | static void undef_cmd_error PARAMS ((char *, char *)); | |
47 | ||
48 | static void show_user PARAMS ((char *, int)); | |
49 | ||
50 | static void show_user_1 PARAMS ((struct cmd_list_element *, GDB_FILE *)); | |
51 | ||
52 | static void make_command PARAMS ((char *, int)); | |
53 | ||
54 | static void shell_escape PARAMS ((char *, int)); | |
55 | ||
56 | static int parse_binary_operation PARAMS ((char *)); | |
57 | ||
58 | static void print_doc_line PARAMS ((GDB_FILE *, char *)); | |
59 | ||
392a587b JM |
60 | static struct cmd_list_element *find_cmd PARAMS ((char *command, |
61 | int len, | |
c5aa993b | 62 | struct cmd_list_element * clist, |
392a587b JM |
63 | int ignore_help_classes, |
64 | int *nfound)); | |
65 | ||
c906108c SS |
66 | void _initialize_command PARAMS ((void)); |
67 | ||
68 | /* Add element named NAME. | |
69 | CLASS is the top level category into which commands are broken down | |
70 | for "help" purposes. | |
71 | FUN should be the function to execute the command; | |
72 | it will get a character string as argument, with leading | |
73 | and trailing blanks already eliminated. | |
74 | ||
75 | DOC is a documentation string for the command. | |
76 | Its first line should be a complete sentence. | |
77 | It should start with ? for a command that is an abbreviation | |
78 | or with * for a command that most users don't need to know about. | |
79 | ||
80 | Add this command to command list *LIST. | |
81 | ||
82 | Returns a pointer to the added command (not necessarily the head | |
83 | of *LIST). */ | |
84 | ||
85 | struct cmd_list_element * | |
86 | add_cmd (name, class, fun, doc, list) | |
87 | char *name; | |
88 | enum command_class class; | |
89 | void (*fun) PARAMS ((char *, int)); | |
90 | char *doc; | |
91 | struct cmd_list_element **list; | |
92 | { | |
93 | register struct cmd_list_element *c | |
c5aa993b | 94 | = (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); |
c906108c SS |
95 | struct cmd_list_element *p; |
96 | ||
97 | delete_cmd (name, list); | |
98 | ||
99 | if (*list == NULL || STRCMP ((*list)->name, name) >= 0) | |
100 | { | |
101 | c->next = *list; | |
102 | *list = c; | |
103 | } | |
104 | else | |
105 | { | |
106 | p = *list; | |
107 | while (p->next && STRCMP (p->next->name, name) <= 0) | |
c5aa993b JM |
108 | { |
109 | p = p->next; | |
110 | } | |
c906108c SS |
111 | c->next = p->next; |
112 | p->next = c; | |
113 | } | |
114 | ||
115 | c->name = name; | |
116 | c->class = class; | |
117 | c->function.cfunc = fun; | |
118 | c->doc = doc; | |
119 | c->hook = NULL; | |
120 | c->prefixlist = NULL; | |
121 | c->prefixname = NULL; | |
122 | c->allow_unknown = 0; | |
123 | c->abbrev_flag = 0; | |
124 | c->completer = make_symbol_completion_list; | |
125 | c->type = not_set_cmd; | |
126 | c->var = NULL; | |
127 | c->var_type = var_boolean; | |
128 | c->enums = NULL; | |
129 | c->user_commands = NULL; | |
130 | c->hookee = NULL; | |
131 | c->cmd_pointer = NULL; | |
132 | ||
133 | return c; | |
134 | } | |
135 | ||
136 | /* Same as above, except that the abbrev_flag is set. */ | |
137 | ||
c5aa993b | 138 | #if 0 /* Currently unused */ |
c906108c SS |
139 | |
140 | struct cmd_list_element * | |
141 | add_abbrev_cmd (name, class, fun, doc, list) | |
142 | char *name; | |
143 | enum command_class class; | |
144 | void (*fun) PARAMS ((char *, int)); | |
145 | char *doc; | |
146 | struct cmd_list_element **list; | |
147 | { | |
148 | register struct cmd_list_element *c | |
c5aa993b | 149 | = add_cmd (name, class, fun, doc, list); |
c906108c SS |
150 | |
151 | c->abbrev_flag = 1; | |
152 | return c; | |
153 | } | |
154 | ||
155 | #endif | |
156 | ||
157 | struct cmd_list_element * | |
158 | add_alias_cmd (name, oldname, class, abbrev_flag, list) | |
159 | char *name; | |
160 | char *oldname; | |
161 | enum command_class class; | |
162 | int abbrev_flag; | |
163 | struct cmd_list_element **list; | |
164 | { | |
165 | /* Must do this since lookup_cmd tries to side-effect its first arg */ | |
166 | char *copied_name; | |
167 | register struct cmd_list_element *old; | |
168 | register struct cmd_list_element *c; | |
169 | copied_name = (char *) alloca (strlen (oldname) + 1); | |
170 | strcpy (copied_name, oldname); | |
c5aa993b | 171 | old = lookup_cmd (&copied_name, *list, "", 1, 1); |
c906108c SS |
172 | |
173 | if (old == 0) | |
174 | { | |
175 | delete_cmd (name, list); | |
176 | return 0; | |
177 | } | |
178 | ||
179 | c = add_cmd (name, class, old->function.cfunc, old->doc, list); | |
180 | c->prefixlist = old->prefixlist; | |
181 | c->prefixname = old->prefixname; | |
182 | c->allow_unknown = old->allow_unknown; | |
183 | c->abbrev_flag = abbrev_flag; | |
184 | c->cmd_pointer = old; | |
185 | return c; | |
186 | } | |
187 | ||
188 | /* Like add_cmd but adds an element for a command prefix: | |
189 | a name that should be followed by a subcommand to be looked up | |
190 | in another command list. PREFIXLIST should be the address | |
191 | of the variable containing that list. */ | |
192 | ||
193 | struct cmd_list_element * | |
194 | add_prefix_cmd (name, class, fun, doc, prefixlist, prefixname, | |
195 | allow_unknown, list) | |
196 | char *name; | |
197 | enum command_class class; | |
198 | void (*fun) PARAMS ((char *, int)); | |
199 | char *doc; | |
200 | struct cmd_list_element **prefixlist; | |
201 | char *prefixname; | |
202 | int allow_unknown; | |
203 | struct cmd_list_element **list; | |
204 | { | |
205 | register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); | |
206 | c->prefixlist = prefixlist; | |
207 | c->prefixname = prefixname; | |
208 | c->allow_unknown = allow_unknown; | |
209 | return c; | |
210 | } | |
211 | ||
212 | /* Like add_prefix_cmd but sets the abbrev_flag on the new command. */ | |
c5aa993b | 213 | |
c906108c SS |
214 | struct cmd_list_element * |
215 | add_abbrev_prefix_cmd (name, class, fun, doc, prefixlist, prefixname, | |
216 | allow_unknown, list) | |
217 | char *name; | |
218 | enum command_class class; | |
219 | void (*fun) PARAMS ((char *, int)); | |
220 | char *doc; | |
221 | struct cmd_list_element **prefixlist; | |
222 | char *prefixname; | |
223 | int allow_unknown; | |
224 | struct cmd_list_element **list; | |
225 | { | |
226 | register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list); | |
227 | c->prefixlist = prefixlist; | |
228 | c->prefixname = prefixname; | |
229 | c->allow_unknown = allow_unknown; | |
230 | c->abbrev_flag = 1; | |
231 | return c; | |
232 | } | |
233 | ||
234 | /* This is an empty "cfunc". */ | |
235 | void | |
236 | not_just_help_class_command (args, from_tty) | |
237 | char *args; | |
238 | int from_tty; | |
239 | { | |
240 | } | |
241 | ||
242 | /* This is an empty "sfunc". */ | |
243 | static void empty_sfunc PARAMS ((char *, int, struct cmd_list_element *)); | |
244 | ||
245 | static void | |
246 | empty_sfunc (args, from_tty, c) | |
247 | char *args; | |
248 | int from_tty; | |
249 | struct cmd_list_element *c; | |
250 | { | |
251 | } | |
252 | ||
253 | /* Add element named NAME to command list LIST (the list for set | |
254 | or some sublist thereof). | |
255 | CLASS is as in add_cmd. | |
256 | VAR_TYPE is the kind of thing we are setting. | |
257 | VAR is address of the variable being controlled by this command. | |
258 | DOC is the documentation string. */ | |
259 | ||
260 | struct cmd_list_element * | |
261 | add_set_cmd (name, class, var_type, var, doc, list) | |
262 | char *name; | |
263 | enum command_class class; | |
264 | var_types var_type; | |
265 | char *var; | |
266 | char *doc; | |
267 | struct cmd_list_element **list; | |
268 | { | |
269 | struct cmd_list_element *c | |
c5aa993b | 270 | = add_cmd (name, class, NO_FUNCTION, doc, list); |
c906108c SS |
271 | |
272 | c->type = set_cmd; | |
273 | c->var_type = var_type; | |
274 | c->var = var; | |
275 | /* This needs to be something besides NO_FUNCTION so that this isn't | |
276 | treated as a help class. */ | |
277 | c->function.sfunc = empty_sfunc; | |
278 | return c; | |
279 | } | |
280 | ||
281 | /* Add element named NAME to command list LIST (the list for set | |
282 | or some sublist thereof). | |
283 | CLASS is as in add_cmd. | |
284 | ENUMLIST is a list of strings which may follow NAME. | |
285 | VAR is address of the variable which will contain the matching string | |
c5aa993b | 286 | (from ENUMLIST). |
c906108c SS |
287 | DOC is the documentation string. */ |
288 | ||
289 | struct cmd_list_element * | |
290 | add_set_enum_cmd (name, class, enumlist, var, doc, list) | |
291 | char *name; | |
292 | enum command_class class; | |
293 | char *enumlist[]; | |
294 | char *var; | |
295 | char *doc; | |
296 | struct cmd_list_element **list; | |
297 | { | |
298 | struct cmd_list_element *c | |
c5aa993b | 299 | = add_set_cmd (name, class, var_enum, var, doc, list); |
c906108c SS |
300 | c->enums = enumlist; |
301 | ||
302 | return c; | |
303 | } | |
304 | ||
305 | /* Where SETCMD has already been added, add the corresponding show | |
306 | command to LIST and return a pointer to the added command (not | |
307 | necessarily the head of LIST). */ | |
308 | struct cmd_list_element * | |
309 | add_show_from_set (setcmd, list) | |
310 | struct cmd_list_element *setcmd; | |
311 | struct cmd_list_element **list; | |
312 | { | |
313 | struct cmd_list_element *showcmd = | |
c5aa993b | 314 | (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element)); |
c906108c SS |
315 | struct cmd_list_element *p; |
316 | ||
317 | memcpy (showcmd, setcmd, sizeof (struct cmd_list_element)); | |
318 | delete_cmd (showcmd->name, list); | |
319 | showcmd->type = show_cmd; | |
c5aa993b | 320 | |
c906108c SS |
321 | /* Replace "set " at start of docstring with "show ". */ |
322 | if (setcmd->doc[0] == 'S' && setcmd->doc[1] == 'e' | |
323 | && setcmd->doc[2] == 't' && setcmd->doc[3] == ' ') | |
324 | showcmd->doc = concat ("Show ", setcmd->doc + 4, NULL); | |
325 | else | |
326 | fprintf_unfiltered (gdb_stderr, "GDB internal error: Bad docstring for set command\n"); | |
c5aa993b JM |
327 | |
328 | if (*list == NULL || STRCMP ((*list)->name, showcmd->name) >= 0) | |
c906108c SS |
329 | { |
330 | showcmd->next = *list; | |
331 | *list = showcmd; | |
332 | } | |
333 | else | |
334 | { | |
335 | p = *list; | |
336 | while (p->next && STRCMP (p->next->name, showcmd->name) <= 0) | |
c5aa993b JM |
337 | { |
338 | p = p->next; | |
339 | } | |
c906108c SS |
340 | showcmd->next = p->next; |
341 | p->next = showcmd; | |
342 | } | |
343 | ||
344 | return showcmd; | |
345 | } | |
346 | ||
347 | /* Remove the command named NAME from the command list. */ | |
348 | ||
349 | void | |
350 | delete_cmd (name, list) | |
351 | char *name; | |
352 | struct cmd_list_element **list; | |
353 | { | |
354 | register struct cmd_list_element *c; | |
355 | struct cmd_list_element *p; | |
356 | ||
357 | while (*list && STREQ ((*list)->name, name)) | |
358 | { | |
359 | if ((*list)->hookee) | |
360 | (*list)->hookee->hook = 0; /* Hook slips out of its mouth */ | |
361 | p = (*list)->next; | |
c5aa993b | 362 | free ((PTR) * list); |
c906108c SS |
363 | *list = p; |
364 | } | |
365 | ||
366 | if (*list) | |
367 | for (c = *list; c->next;) | |
368 | { | |
369 | if (STREQ (c->next->name, name)) | |
370 | { | |
371 | if (c->next->hookee) | |
c5aa993b | 372 | c->next->hookee->hook = 0; /* hooked cmd gets away. */ |
c906108c | 373 | p = c->next->next; |
c5aa993b | 374 | free ((PTR) c->next); |
c906108c SS |
375 | c->next = p; |
376 | } | |
377 | else | |
378 | c = c->next; | |
379 | } | |
380 | } | |
381 | ||
382 | /* This command really has to deal with two things: | |
383 | * 1) I want documentation on *this string* (usually called by | |
384 | * "help commandname"). | |
385 | * 2) I want documentation on *this list* (usually called by | |
386 | * giving a command that requires subcommands. Also called by saying | |
387 | * just "help".) | |
388 | * | |
389 | * I am going to split this into two seperate comamnds, help_cmd and | |
390 | * help_list. | |
391 | */ | |
392 | ||
393 | void | |
394 | help_cmd (command, stream) | |
395 | char *command; | |
396 | GDB_FILE *stream; | |
397 | { | |
398 | struct cmd_list_element *c; | |
399 | extern struct cmd_list_element *cmdlist; | |
400 | ||
401 | if (!command) | |
402 | { | |
403 | help_list (cmdlist, "", all_classes, stream); | |
404 | return; | |
405 | } | |
406 | ||
407 | c = lookup_cmd (&command, cmdlist, "", 0, 0); | |
408 | ||
409 | if (c == 0) | |
410 | return; | |
411 | ||
412 | /* There are three cases here. | |
413 | If c->prefixlist is nonzero, we have a prefix command. | |
414 | Print its documentation, then list its subcommands. | |
c5aa993b | 415 | |
c906108c SS |
416 | If c->function is nonzero, we really have a command. |
417 | Print its documentation and return. | |
c5aa993b | 418 | |
c906108c SS |
419 | If c->function is zero, we have a class name. |
420 | Print its documentation (as if it were a command) | |
421 | and then set class to the number of this class | |
422 | so that the commands in the class will be listed. */ | |
423 | ||
424 | fputs_filtered (c->doc, stream); | |
425 | fputs_filtered ("\n", stream); | |
426 | ||
427 | if (c->prefixlist == 0 && c->function.cfunc != NULL) | |
428 | return; | |
429 | fprintf_filtered (stream, "\n"); | |
430 | ||
431 | /* If this is a prefix command, print it's subcommands */ | |
432 | if (c->prefixlist) | |
433 | help_list (*c->prefixlist, c->prefixname, all_commands, stream); | |
434 | ||
435 | /* If this is a class name, print all of the commands in the class */ | |
436 | if (c->function.cfunc == NULL) | |
437 | help_list (cmdlist, "", c->class, stream); | |
438 | ||
439 | if (c->hook) | |
440 | fprintf_filtered (stream, "\nThis command has a hook defined: %s\n", | |
441 | c->hook->name); | |
442 | } | |
443 | ||
444 | /* | |
445 | * Get a specific kind of help on a command list. | |
446 | * | |
447 | * LIST is the list. | |
448 | * CMDTYPE is the prefix to use in the title string. | |
449 | * CLASS is the class with which to list the nodes of this list (see | |
450 | * documentation for help_cmd_list below), As usual, ALL_COMMANDS for | |
451 | * everything, ALL_CLASSES for just classes, and non-negative for only things | |
452 | * in a specific class. | |
453 | * and STREAM is the output stream on which to print things. | |
454 | * If you call this routine with a class >= 0, it recurses. | |
455 | */ | |
456 | void | |
457 | help_list (list, cmdtype, class, stream) | |
458 | struct cmd_list_element *list; | |
459 | char *cmdtype; | |
460 | enum command_class class; | |
461 | GDB_FILE *stream; | |
462 | { | |
463 | int len; | |
464 | char *cmdtype1, *cmdtype2; | |
c5aa993b | 465 | |
c906108c SS |
466 | /* If CMDTYPE is "foo ", CMDTYPE1 gets " foo" and CMDTYPE2 gets "foo sub" */ |
467 | len = strlen (cmdtype); | |
468 | cmdtype1 = (char *) alloca (len + 1); | |
469 | cmdtype1[0] = 0; | |
470 | cmdtype2 = (char *) alloca (len + 4); | |
471 | cmdtype2[0] = 0; | |
472 | if (len) | |
473 | { | |
474 | cmdtype1[0] = ' '; | |
475 | strncpy (cmdtype1 + 1, cmdtype, len - 1); | |
476 | cmdtype1[len] = 0; | |
477 | strncpy (cmdtype2, cmdtype, len - 1); | |
478 | strcpy (cmdtype2 + len - 1, " sub"); | |
479 | } | |
480 | ||
481 | if (class == all_classes) | |
482 | fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2); | |
483 | else | |
484 | fprintf_filtered (stream, "List of %scommands:\n\n", cmdtype2); | |
485 | ||
c5aa993b | 486 | help_cmd_list (list, class, cmdtype, (int) class >= 0, stream); |
c906108c SS |
487 | |
488 | if (class == all_classes) | |
489 | fprintf_filtered (stream, "\n\ | |
490 | Type \"help%s\" followed by a class name for a list of commands in that class.", | |
c5aa993b | 491 | cmdtype1); |
c906108c SS |
492 | |
493 | fprintf_filtered (stream, "\n\ | |
494 | Type \"help%s\" followed by %scommand name for full documentation.\n\ | |
495 | Command name abbreviations are allowed if unambiguous.\n", | |
c5aa993b | 496 | cmdtype1, cmdtype2); |
c906108c | 497 | } |
c5aa993b | 498 | |
c906108c SS |
499 | /* Print only the first line of STR on STREAM. */ |
500 | static void | |
501 | print_doc_line (stream, str) | |
502 | GDB_FILE *stream; | |
503 | char *str; | |
504 | { | |
505 | static char *line_buffer = 0; | |
506 | static int line_size; | |
507 | register char *p; | |
508 | ||
509 | if (!line_buffer) | |
510 | { | |
511 | line_size = 80; | |
512 | line_buffer = (char *) xmalloc (line_size); | |
513 | } | |
514 | ||
515 | p = str; | |
516 | while (*p && *p != '\n' && *p != '.' && *p != ',') | |
517 | p++; | |
518 | if (p - str > line_size - 1) | |
519 | { | |
520 | line_size = p - str + 1; | |
c5aa993b | 521 | free ((PTR) line_buffer); |
c906108c SS |
522 | line_buffer = (char *) xmalloc (line_size); |
523 | } | |
524 | strncpy (line_buffer, str, p - str); | |
525 | line_buffer[p - str] = '\0'; | |
526 | if (islower (line_buffer[0])) | |
527 | line_buffer[0] = toupper (line_buffer[0]); | |
528 | fputs_filtered (line_buffer, stream); | |
529 | } | |
530 | ||
531 | /* | |
532 | * Implement a help command on command list LIST. | |
533 | * RECURSE should be non-zero if this should be done recursively on | |
534 | * all sublists of LIST. | |
535 | * PREFIX is the prefix to print before each command name. | |
536 | * STREAM is the stream upon which the output should be written. | |
537 | * CLASS should be: | |
c5aa993b | 538 | * A non-negative class number to list only commands in that |
c906108c | 539 | * class. |
c5aa993b JM |
540 | * ALL_COMMANDS to list all commands in list. |
541 | * ALL_CLASSES to list all classes in list. | |
c906108c SS |
542 | * |
543 | * Note that RECURSE will be active on *all* sublists, not just the | |
544 | * ones selected by the criteria above (ie. the selection mechanism | |
545 | * is at the low level, not the high-level). | |
546 | */ | |
547 | void | |
548 | help_cmd_list (list, class, prefix, recurse, stream) | |
549 | struct cmd_list_element *list; | |
550 | enum command_class class; | |
551 | char *prefix; | |
552 | int recurse; | |
553 | GDB_FILE *stream; | |
554 | { | |
555 | register struct cmd_list_element *c; | |
556 | ||
557 | for (c = list; c; c = c->next) | |
558 | { | |
559 | if (c->abbrev_flag == 0 && | |
560 | (class == all_commands | |
c5aa993b JM |
561 | || (class == all_classes && c->function.cfunc == NULL) |
562 | || (class == c->class && c->function.cfunc != NULL))) | |
c906108c SS |
563 | { |
564 | fprintf_filtered (stream, "%s%s -- ", prefix, c->name); | |
565 | print_doc_line (stream, c->doc); | |
566 | fputs_filtered ("\n", stream); | |
567 | } | |
568 | if (recurse | |
569 | && c->prefixlist != 0 | |
570 | && c->abbrev_flag == 0) | |
571 | help_cmd_list (*c->prefixlist, class, c->prefixname, 1, stream); | |
572 | } | |
573 | } | |
c906108c | 574 | \f |
c5aa993b | 575 | |
c906108c SS |
576 | /* Search the input clist for 'command'. Return the command if |
577 | found (or NULL if not), and return the number of commands | |
578 | found in nfound */ | |
579 | ||
580 | static struct cmd_list_element * | |
c5aa993b | 581 | find_cmd (command, len, clist, ignore_help_classes, nfound) |
c906108c | 582 | char *command; |
392a587b | 583 | int len; |
c906108c SS |
584 | struct cmd_list_element *clist; |
585 | int ignore_help_classes; | |
586 | int *nfound; | |
587 | { | |
588 | struct cmd_list_element *found, *c; | |
589 | ||
c5aa993b | 590 | found = (struct cmd_list_element *) NULL; |
c906108c SS |
591 | *nfound = 0; |
592 | for (c = clist; c; c = c->next) | |
593 | if (!strncmp (command, c->name, len) | |
c5aa993b | 594 | && (!ignore_help_classes || c->function.cfunc)) |
c906108c | 595 | { |
c5aa993b JM |
596 | found = c; |
597 | (*nfound)++; | |
598 | if (c->name[len] == '\0') | |
599 | { | |
600 | *nfound = 1; | |
601 | break; | |
602 | } | |
c906108c SS |
603 | } |
604 | return found; | |
605 | } | |
606 | ||
607 | /* This routine takes a line of TEXT and a CLIST in which to start the | |
608 | lookup. When it returns it will have incremented the text pointer past | |
609 | the section of text it matched, set *RESULT_LIST to point to the list in | |
610 | which the last word was matched, and will return a pointer to the cmd | |
611 | list element which the text matches. It will return NULL if no match at | |
612 | all was possible. It will return -1 (cast appropriately, ick) if ambigous | |
613 | matches are possible; in this case *RESULT_LIST will be set to point to | |
614 | the list in which there are ambiguous choices (and *TEXT will be set to | |
615 | the ambiguous text string). | |
616 | ||
617 | If the located command was an abbreviation, this routine returns the base | |
618 | command of the abbreviation. | |
619 | ||
620 | It does no error reporting whatsoever; control will always return | |
621 | to the superior routine. | |
622 | ||
623 | In the case of an ambiguous return (-1), *RESULT_LIST will be set to point | |
624 | at the prefix_command (ie. the best match) *or* (special case) will be NULL | |
625 | if no prefix command was ever found. For example, in the case of "info a", | |
626 | "info" matches without ambiguity, but "a" could be "args" or "address", so | |
627 | *RESULT_LIST is set to the cmd_list_element for "info". So in this case | |
628 | RESULT_LIST should not be interpeted as a pointer to the beginning of a | |
629 | list; it simply points to a specific command. In the case of an ambiguous | |
630 | return *TEXT is advanced past the last non-ambiguous prefix (e.g. | |
631 | "info t" can be "info types" or "info target"; upon return *TEXT has been | |
632 | advanced past "info "). | |
633 | ||
634 | If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise | |
635 | affect the operation). | |
636 | ||
637 | This routine does *not* modify the text pointed to by TEXT. | |
c5aa993b | 638 | |
c906108c SS |
639 | If IGNORE_HELP_CLASSES is nonzero, ignore any command list elements which |
640 | are actually help classes rather than commands (i.e. the function field of | |
641 | the struct cmd_list_element is NULL). */ | |
642 | ||
643 | struct cmd_list_element * | |
644 | lookup_cmd_1 (text, clist, result_list, ignore_help_classes) | |
645 | char **text; | |
646 | struct cmd_list_element *clist, **result_list; | |
647 | int ignore_help_classes; | |
648 | { | |
649 | char *p, *command; | |
650 | int len, tmp, nfound; | |
651 | struct cmd_list_element *found, *c; | |
652 | ||
653 | while (**text == ' ' || **text == '\t') | |
654 | (*text)++; | |
655 | ||
656 | /* Treating underscores as part of command words is important | |
657 | so that "set args_foo()" doesn't get interpreted as | |
658 | "set args _foo()". */ | |
659 | for (p = *text; | |
c5aa993b | 660 | *p && (isalnum (*p) || *p == '-' || *p == '_' || |
c906108c SS |
661 | (tui_version && |
662 | (*p == '+' || *p == '<' || *p == '>' || *p == '$')) || | |
663 | (xdb_commands && (*p == '!' || *p == '/' || *p == '?'))); | |
664 | p++) | |
665 | ; | |
666 | ||
667 | /* If nothing but whitespace, return 0. */ | |
668 | if (p == *text) | |
669 | return 0; | |
c5aa993b | 670 | |
c906108c SS |
671 | len = p - *text; |
672 | ||
673 | /* *text and p now bracket the first command word to lookup (and | |
674 | it's length is len). We copy this into a local temporary */ | |
675 | ||
676 | ||
677 | command = (char *) alloca (len + 1); | |
678 | for (tmp = 0; tmp < len; tmp++) | |
679 | { | |
680 | char x = (*text)[tmp]; | |
681 | command[tmp] = x; | |
682 | } | |
683 | command[len] = '\0'; | |
684 | ||
685 | /* Look it up. */ | |
686 | found = 0; | |
687 | nfound = 0; | |
c5aa993b | 688 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); |
c906108c SS |
689 | |
690 | /* | |
c5aa993b JM |
691 | ** We didn't find the command in the entered case, so lower case it |
692 | ** and search again. | |
693 | */ | |
c906108c SS |
694 | if (!found || nfound == 0) |
695 | { | |
696 | for (tmp = 0; tmp < len; tmp++) | |
c5aa993b JM |
697 | { |
698 | char x = command[tmp]; | |
699 | command[tmp] = isupper (x) ? tolower (x) : x; | |
700 | } | |
701 | found = find_cmd (command, len, clist, ignore_help_classes, &nfound); | |
c906108c SS |
702 | } |
703 | ||
704 | /* If nothing matches, we have a simple failure. */ | |
705 | if (nfound == 0) | |
706 | return 0; | |
707 | ||
708 | if (nfound > 1) | |
709 | { | |
710 | if (result_list != NULL) | |
711 | /* Will be modified in calling routine | |
712 | if we know what the prefix command is. */ | |
c5aa993b JM |
713 | *result_list = 0; |
714 | return (struct cmd_list_element *) -1; /* Ambiguous. */ | |
c906108c SS |
715 | } |
716 | ||
717 | /* We've matched something on this list. Move text pointer forward. */ | |
718 | ||
719 | *text = p; | |
720 | ||
721 | /* If this was an abbreviation, use the base command instead. */ | |
722 | ||
723 | if (found->cmd_pointer) | |
724 | found = found->cmd_pointer; | |
725 | ||
726 | /* If we found a prefix command, keep looking. */ | |
727 | ||
728 | if (found->prefixlist) | |
729 | { | |
730 | c = lookup_cmd_1 (text, *found->prefixlist, result_list, | |
731 | ignore_help_classes); | |
732 | if (!c) | |
733 | { | |
734 | /* Didn't find anything; this is as far as we got. */ | |
735 | if (result_list != NULL) | |
736 | *result_list = clist; | |
737 | return found; | |
738 | } | |
739 | else if (c == (struct cmd_list_element *) -1) | |
740 | { | |
741 | /* We've gotten this far properly, but the next step | |
742 | is ambiguous. We need to set the result list to the best | |
743 | we've found (if an inferior hasn't already set it). */ | |
744 | if (result_list != NULL) | |
745 | if (!*result_list) | |
746 | /* This used to say *result_list = *found->prefixlist | |
c5aa993b JM |
747 | If that was correct, need to modify the documentation |
748 | at the top of this function to clarify what is supposed | |
749 | to be going on. */ | |
c906108c SS |
750 | *result_list = found; |
751 | return c; | |
752 | } | |
753 | else | |
754 | { | |
755 | /* We matched! */ | |
756 | return c; | |
757 | } | |
758 | } | |
759 | else | |
760 | { | |
761 | if (result_list != NULL) | |
762 | *result_list = clist; | |
763 | return found; | |
764 | } | |
765 | } | |
766 | ||
767 | /* All this hair to move the space to the front of cmdtype */ | |
768 | ||
769 | static void | |
770 | undef_cmd_error (cmdtype, q) | |
771 | char *cmdtype, *q; | |
772 | { | |
773 | error ("Undefined %scommand: \"%s\". Try \"help%s%.*s\".", | |
c5aa993b JM |
774 | cmdtype, |
775 | q, | |
776 | *cmdtype ? " " : "", | |
777 | strlen (cmdtype) - 1, | |
778 | cmdtype); | |
c906108c SS |
779 | } |
780 | ||
781 | /* Look up the contents of *LINE as a command in the command list LIST. | |
782 | LIST is a chain of struct cmd_list_element's. | |
783 | If it is found, return the struct cmd_list_element for that command | |
784 | and update *LINE to point after the command name, at the first argument. | |
785 | If not found, call error if ALLOW_UNKNOWN is zero | |
786 | otherwise (or if error returns) return zero. | |
787 | Call error if specified command is ambiguous, | |
788 | unless ALLOW_UNKNOWN is negative. | |
789 | CMDTYPE precedes the word "command" in the error message. | |
790 | ||
791 | If INGNORE_HELP_CLASSES is nonzero, ignore any command list | |
792 | elements which are actually help classes rather than commands (i.e. | |
793 | the function field of the struct cmd_list_element is 0). */ | |
794 | ||
795 | struct cmd_list_element * | |
796 | lookup_cmd (line, list, cmdtype, allow_unknown, ignore_help_classes) | |
797 | char **line; | |
798 | struct cmd_list_element *list; | |
799 | char *cmdtype; | |
800 | int allow_unknown; | |
801 | int ignore_help_classes; | |
802 | { | |
803 | struct cmd_list_element *last_list = 0; | |
804 | struct cmd_list_element *c = | |
c5aa993b | 805 | lookup_cmd_1 (line, list, &last_list, ignore_help_classes); |
c906108c SS |
806 | #if 0 |
807 | /* This is wrong for complete_command. */ | |
808 | char *ptr = (*line) + strlen (*line) - 1; | |
809 | ||
810 | /* Clear off trailing whitespace. */ | |
811 | while (ptr >= *line && (*ptr == ' ' || *ptr == '\t')) | |
812 | ptr--; | |
813 | *(ptr + 1) = '\0'; | |
814 | #endif | |
c5aa993b | 815 | |
c906108c SS |
816 | if (!c) |
817 | { | |
818 | if (!allow_unknown) | |
819 | { | |
820 | if (!*line) | |
821 | error ("Lack of needed %scommand", cmdtype); | |
822 | else | |
823 | { | |
824 | char *p = *line, *q; | |
825 | ||
c5aa993b | 826 | while (isalnum (*p) || *p == '-') |
c906108c SS |
827 | p++; |
828 | ||
829 | q = (char *) alloca (p - *line + 1); | |
830 | strncpy (q, *line, p - *line); | |
831 | q[p - *line] = '\0'; | |
832 | undef_cmd_error (cmdtype, q); | |
833 | } | |
834 | } | |
835 | else | |
836 | return 0; | |
837 | } | |
838 | else if (c == (struct cmd_list_element *) -1) | |
839 | { | |
840 | /* Ambigous. Local values should be off prefixlist or called | |
c5aa993b | 841 | values. */ |
c906108c SS |
842 | int local_allow_unknown = (last_list ? last_list->allow_unknown : |
843 | allow_unknown); | |
844 | char *local_cmdtype = last_list ? last_list->prefixname : cmdtype; | |
845 | struct cmd_list_element *local_list = | |
c5aa993b JM |
846 | (last_list ? *(last_list->prefixlist) : list); |
847 | ||
c906108c SS |
848 | if (local_allow_unknown < 0) |
849 | { | |
850 | if (last_list) | |
851 | return last_list; /* Found something. */ | |
852 | else | |
853 | return 0; /* Found nothing. */ | |
854 | } | |
855 | else | |
856 | { | |
857 | /* Report as error. */ | |
858 | int amb_len; | |
859 | char ambbuf[100]; | |
860 | ||
861 | for (amb_len = 0; | |
862 | ((*line)[amb_len] && (*line)[amb_len] != ' ' | |
863 | && (*line)[amb_len] != '\t'); | |
864 | amb_len++) | |
865 | ; | |
c5aa993b | 866 | |
c906108c SS |
867 | ambbuf[0] = 0; |
868 | for (c = local_list; c; c = c->next) | |
869 | if (!strncmp (*line, c->name, amb_len)) | |
870 | { | |
c5aa993b | 871 | if (strlen (ambbuf) + strlen (c->name) + 6 < (int) sizeof ambbuf) |
c906108c SS |
872 | { |
873 | if (strlen (ambbuf)) | |
874 | strcat (ambbuf, ", "); | |
875 | strcat (ambbuf, c->name); | |
876 | } | |
877 | else | |
878 | { | |
879 | strcat (ambbuf, ".."); | |
880 | break; | |
881 | } | |
882 | } | |
883 | error ("Ambiguous %scommand \"%s\": %s.", local_cmdtype, | |
884 | *line, ambbuf); | |
885 | return 0; /* lint */ | |
886 | } | |
887 | } | |
888 | else | |
889 | { | |
890 | /* We've got something. It may still not be what the caller | |
891 | wants (if this command *needs* a subcommand). */ | |
892 | while (**line == ' ' || **line == '\t') | |
893 | (*line)++; | |
894 | ||
895 | if (c->prefixlist && **line && !c->allow_unknown) | |
896 | undef_cmd_error (c->prefixname, *line); | |
897 | ||
898 | /* Seems to be what he wants. Return it. */ | |
899 | return c; | |
900 | } | |
901 | return 0; | |
902 | } | |
c5aa993b | 903 | |
c906108c SS |
904 | #if 0 |
905 | /* Look up the contents of *LINE as a command in the command list LIST. | |
906 | LIST is a chain of struct cmd_list_element's. | |
907 | If it is found, return the struct cmd_list_element for that command | |
908 | and update *LINE to point after the command name, at the first argument. | |
909 | If not found, call error if ALLOW_UNKNOWN is zero | |
910 | otherwise (or if error returns) return zero. | |
911 | Call error if specified command is ambiguous, | |
912 | unless ALLOW_UNKNOWN is negative. | |
913 | CMDTYPE precedes the word "command" in the error message. */ | |
914 | ||
915 | struct cmd_list_element * | |
916 | lookup_cmd (line, list, cmdtype, allow_unknown) | |
917 | char **line; | |
918 | struct cmd_list_element *list; | |
919 | char *cmdtype; | |
920 | int allow_unknown; | |
921 | { | |
922 | register char *p; | |
923 | register struct cmd_list_element *c, *found; | |
924 | int nfound; | |
925 | char ambbuf[100]; | |
926 | char *processed_cmd; | |
927 | int i, cmd_len; | |
928 | ||
929 | /* Skip leading whitespace. */ | |
930 | ||
931 | while (**line == ' ' || **line == '\t') | |
932 | (*line)++; | |
933 | ||
934 | /* Clear out trailing whitespace. */ | |
935 | ||
936 | p = *line + strlen (*line); | |
937 | while (p != *line && (p[-1] == ' ' || p[-1] == '\t')) | |
938 | p--; | |
939 | *p = 0; | |
940 | ||
941 | /* Find end of command name. */ | |
942 | ||
943 | p = *line; | |
c5aa993b | 944 | while (*p == '-' || isalnum (*p)) |
c906108c SS |
945 | p++; |
946 | ||
947 | /* Look up the command name. | |
948 | If exact match, keep that. | |
949 | Otherwise, take command abbreviated, if unique. Note that (in my | |
950 | opinion) a null string does *not* indicate ambiguity; simply the | |
951 | end of the argument. */ | |
952 | ||
953 | if (p == *line) | |
954 | { | |
955 | if (!allow_unknown) | |
956 | error ("Lack of needed %scommand", cmdtype); | |
957 | return 0; | |
958 | } | |
c5aa993b | 959 | |
c906108c SS |
960 | /* Copy over to a local buffer, converting to lowercase on the way. |
961 | This is in case the command being parsed is a subcommand which | |
962 | doesn't match anything, and that's ok. We want the original | |
963 | untouched for the routine of the original command. */ | |
c5aa993b | 964 | |
c906108c SS |
965 | processed_cmd = (char *) alloca (p - *line + 1); |
966 | for (cmd_len = 0; cmd_len < p - *line; cmd_len++) | |
967 | { | |
968 | char x = (*line)[cmd_len]; | |
c5aa993b JM |
969 | if (isupper (x)) |
970 | processed_cmd[cmd_len] = tolower (x); | |
c906108c SS |
971 | else |
972 | processed_cmd[cmd_len] = x; | |
973 | } | |
974 | processed_cmd[cmd_len] = '\0'; | |
975 | ||
976 | /* Check all possibilities in the current command list. */ | |
977 | found = 0; | |
978 | nfound = 0; | |
979 | for (c = list; c; c = c->next) | |
980 | { | |
981 | if (!strncmp (processed_cmd, c->name, cmd_len)) | |
982 | { | |
983 | found = c; | |
984 | nfound++; | |
985 | if (c->name[cmd_len] == 0) | |
986 | { | |
987 | nfound = 1; | |
988 | break; | |
989 | } | |
990 | } | |
991 | } | |
992 | ||
993 | /* Report error for undefined command name. */ | |
994 | ||
995 | if (nfound != 1) | |
996 | { | |
997 | if (nfound > 1 && allow_unknown >= 0) | |
998 | { | |
999 | ambbuf[0] = 0; | |
1000 | for (c = list; c; c = c->next) | |
1001 | if (!strncmp (processed_cmd, c->name, cmd_len)) | |
1002 | { | |
1003 | if (strlen (ambbuf) + strlen (c->name) + 6 < sizeof ambbuf) | |
1004 | { | |
1005 | if (strlen (ambbuf)) | |
1006 | strcat (ambbuf, ", "); | |
1007 | strcat (ambbuf, c->name); | |
1008 | } | |
1009 | else | |
1010 | { | |
1011 | strcat (ambbuf, ".."); | |
1012 | break; | |
1013 | } | |
1014 | } | |
1015 | error ("Ambiguous %scommand \"%s\": %s.", cmdtype, | |
1016 | processed_cmd, ambbuf); | |
1017 | } | |
1018 | else if (!allow_unknown) | |
1019 | error ("Undefined %scommand: \"%s\".", cmdtype, processed_cmd); | |
1020 | return 0; | |
1021 | } | |
1022 | ||
1023 | /* Skip whitespace before the argument. */ | |
1024 | ||
c5aa993b JM |
1025 | while (*p == ' ' || *p == '\t') |
1026 | p++; | |
c906108c SS |
1027 | *line = p; |
1028 | ||
1029 | if (found->prefixlist && *p) | |
1030 | { | |
1031 | c = lookup_cmd (line, *found->prefixlist, found->prefixname, | |
1032 | found->allow_unknown); | |
1033 | if (c) | |
1034 | return c; | |
1035 | } | |
1036 | ||
1037 | return found; | |
1038 | } | |
1039 | #endif | |
1040 | ||
1041 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
1042 | ||
1043 | /* Return a vector of char pointers which point to the different | |
1044 | possible completions in LIST of TEXT. | |
1045 | ||
1046 | WORD points in the same buffer as TEXT, and completions should be | |
1047 | returned relative to this position. For example, suppose TEXT is "foo" | |
1048 | and we want to complete to "foobar". If WORD is "oo", return | |
1049 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1050 | ||
1051 | char ** | |
1052 | complete_on_cmdlist (list, text, word) | |
1053 | struct cmd_list_element *list; | |
1054 | char *text; | |
1055 | char *word; | |
1056 | { | |
1057 | struct cmd_list_element *ptr; | |
1058 | char **matchlist; | |
1059 | int sizeof_matchlist; | |
1060 | int matches; | |
1061 | int textlen = strlen (text); | |
1062 | ||
1063 | sizeof_matchlist = 10; | |
1064 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1065 | matches = 0; | |
1066 | ||
1067 | for (ptr = list; ptr; ptr = ptr->next) | |
1068 | if (!strncmp (ptr->name, text, textlen) | |
1069 | && !ptr->abbrev_flag | |
1070 | && (ptr->function.cfunc | |
1071 | || ptr->prefixlist)) | |
1072 | { | |
1073 | if (matches == sizeof_matchlist) | |
1074 | { | |
1075 | sizeof_matchlist *= 2; | |
c5aa993b | 1076 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1077 | (sizeof_matchlist |
1078 | * sizeof (char *))); | |
1079 | } | |
1080 | ||
c5aa993b | 1081 | matchlist[matches] = (char *) |
c906108c SS |
1082 | xmalloc (strlen (word) + strlen (ptr->name) + 1); |
1083 | if (word == text) | |
1084 | strcpy (matchlist[matches], ptr->name); | |
1085 | else if (word > text) | |
1086 | { | |
1087 | /* Return some portion of ptr->name. */ | |
1088 | strcpy (matchlist[matches], ptr->name + (word - text)); | |
1089 | } | |
1090 | else | |
1091 | { | |
1092 | /* Return some of text plus ptr->name. */ | |
1093 | strncpy (matchlist[matches], word, text - word); | |
1094 | matchlist[matches][text - word] = '\0'; | |
1095 | strcat (matchlist[matches], ptr->name); | |
1096 | } | |
1097 | ++matches; | |
1098 | } | |
1099 | ||
1100 | if (matches == 0) | |
1101 | { | |
c5aa993b | 1102 | free ((PTR) matchlist); |
c906108c SS |
1103 | matchlist = 0; |
1104 | } | |
1105 | else | |
1106 | { | |
c5aa993b JM |
1107 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1108 | * sizeof (char *))); | |
c906108c SS |
1109 | matchlist[matches] = (char *) 0; |
1110 | } | |
1111 | ||
1112 | return matchlist; | |
1113 | } | |
1114 | ||
1115 | /* Helper function for SYMBOL_COMPLETION_FUNCTION. */ | |
1116 | ||
1117 | /* Return a vector of char pointers which point to the different | |
1118 | possible completions in CMD of TEXT. | |
1119 | ||
1120 | WORD points in the same buffer as TEXT, and completions should be | |
1121 | returned relative to this position. For example, suppose TEXT is "foo" | |
1122 | and we want to complete to "foobar". If WORD is "oo", return | |
1123 | "oobar"; if WORD is "baz/foo", return "baz/foobar". */ | |
1124 | ||
1125 | char ** | |
1126 | complete_on_enum (enumlist, text, word) | |
1127 | char **enumlist; | |
1128 | char *text; | |
1129 | char *word; | |
1130 | { | |
1131 | char **matchlist; | |
1132 | int sizeof_matchlist; | |
1133 | int matches; | |
1134 | int textlen = strlen (text); | |
1135 | int i; | |
1136 | char *name; | |
1137 | ||
1138 | sizeof_matchlist = 10; | |
1139 | matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *)); | |
1140 | matches = 0; | |
1141 | ||
1142 | for (i = 0; (name = enumlist[i]) != NULL; i++) | |
1143 | if (strncmp (name, text, textlen) == 0) | |
1144 | { | |
1145 | if (matches == sizeof_matchlist) | |
1146 | { | |
1147 | sizeof_matchlist *= 2; | |
c5aa993b | 1148 | matchlist = (char **) xrealloc ((char *) matchlist, |
c906108c SS |
1149 | (sizeof_matchlist |
1150 | * sizeof (char *))); | |
1151 | } | |
1152 | ||
c5aa993b | 1153 | matchlist[matches] = (char *) |
c906108c SS |
1154 | xmalloc (strlen (word) + strlen (name) + 1); |
1155 | if (word == text) | |
1156 | strcpy (matchlist[matches], name); | |
1157 | else if (word > text) | |
1158 | { | |
1159 | /* Return some portion of name. */ | |
1160 | strcpy (matchlist[matches], name + (word - text)); | |
1161 | } | |
1162 | else | |
1163 | { | |
1164 | /* Return some of text plus name. */ | |
1165 | strncpy (matchlist[matches], word, text - word); | |
1166 | matchlist[matches][text - word] = '\0'; | |
1167 | strcat (matchlist[matches], name); | |
1168 | } | |
1169 | ++matches; | |
1170 | } | |
1171 | ||
1172 | if (matches == 0) | |
1173 | { | |
c5aa993b | 1174 | free ((PTR) matchlist); |
c906108c SS |
1175 | matchlist = 0; |
1176 | } | |
1177 | else | |
1178 | { | |
c5aa993b JM |
1179 | matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1) |
1180 | * sizeof (char *))); | |
c906108c SS |
1181 | matchlist[matches] = (char *) 0; |
1182 | } | |
1183 | ||
1184 | return matchlist; | |
1185 | } | |
1186 | ||
1187 | static int | |
1188 | parse_binary_operation (arg) | |
1189 | char *arg; | |
1190 | { | |
1191 | int length; | |
1192 | ||
1193 | if (!arg || !*arg) | |
1194 | return 1; | |
1195 | ||
1196 | length = strlen (arg); | |
1197 | ||
1198 | while (arg[length - 1] == ' ' || arg[length - 1] == '\t') | |
1199 | length--; | |
1200 | ||
1201 | if (!strncmp (arg, "on", length) | |
1202 | || !strncmp (arg, "1", length) | |
1203 | || !strncmp (arg, "yes", length)) | |
1204 | return 1; | |
c5aa993b JM |
1205 | else if (!strncmp (arg, "off", length) |
1206 | || !strncmp (arg, "0", length) | |
1207 | || !strncmp (arg, "no", length)) | |
1208 | return 0; | |
c906108c | 1209 | else |
c5aa993b JM |
1210 | { |
1211 | error ("\"on\" or \"off\" expected."); | |
c906108c | 1212 | return 0; |
c5aa993b | 1213 | } |
c906108c SS |
1214 | } |
1215 | ||
1216 | /* Do a "set" or "show" command. ARG is NULL if no argument, or the text | |
1217 | of the argument, and FROM_TTY is nonzero if this command is being entered | |
1218 | directly by the user (i.e. these are just like any other | |
1219 | command). C is the command list element for the command. */ | |
1220 | void | |
1221 | do_setshow_command (arg, from_tty, c) | |
1222 | char *arg; | |
1223 | int from_tty; | |
1224 | struct cmd_list_element *c; | |
1225 | { | |
1226 | if (c->type == set_cmd) | |
1227 | { | |
1228 | switch (c->var_type) | |
1229 | { | |
1230 | case var_string: | |
1231 | { | |
1232 | char *new; | |
1233 | char *p; | |
1234 | char *q; | |
1235 | int ch; | |
c5aa993b | 1236 | |
c906108c SS |
1237 | if (arg == NULL) |
1238 | arg = ""; | |
1239 | new = (char *) xmalloc (strlen (arg) + 2); | |
c5aa993b JM |
1240 | p = arg; |
1241 | q = new; | |
c906108c SS |
1242 | while ((ch = *p++) != '\000') |
1243 | { | |
1244 | if (ch == '\\') | |
1245 | { | |
1246 | /* \ at end of argument is used after spaces | |
1247 | so they won't be lost. */ | |
1248 | /* This is obsolete now that we no longer strip | |
1249 | trailing whitespace and actually, the backslash | |
1250 | didn't get here in my test, readline or | |
1251 | something did something funky with a backslash | |
1252 | right before a newline. */ | |
1253 | if (*p == 0) | |
1254 | break; | |
1255 | ch = parse_escape (&p); | |
1256 | if (ch == 0) | |
c5aa993b | 1257 | break; /* C loses */ |
c906108c SS |
1258 | else if (ch > 0) |
1259 | *q++ = ch; | |
1260 | } | |
1261 | else | |
1262 | *q++ = ch; | |
1263 | } | |
1264 | #if 0 | |
1265 | if (*(p - 1) != '\\') | |
1266 | *q++ = ' '; | |
1267 | #endif | |
1268 | *q++ = '\0'; | |
1269 | new = (char *) xrealloc (new, q - new); | |
c5aa993b JM |
1270 | if (*(char **) c->var != NULL) |
1271 | free (*(char **) c->var); | |
c906108c SS |
1272 | *(char **) c->var = new; |
1273 | } | |
1274 | break; | |
1275 | case var_string_noescape: | |
1276 | if (arg == NULL) | |
1277 | arg = ""; | |
c5aa993b JM |
1278 | if (*(char **) c->var != NULL) |
1279 | free (*(char **) c->var); | |
c906108c SS |
1280 | *(char **) c->var = savestring (arg, strlen (arg)); |
1281 | break; | |
1282 | case var_filename: | |
1283 | if (arg == NULL) | |
1284 | error_no_arg ("filename to set it to."); | |
c5aa993b JM |
1285 | if (*(char **) c->var != NULL) |
1286 | free (*(char **) c->var); | |
1287 | *(char **) c->var = tilde_expand (arg); | |
c906108c SS |
1288 | break; |
1289 | case var_boolean: | |
1290 | *(int *) c->var = parse_binary_operation (arg); | |
1291 | break; | |
1292 | case var_uinteger: | |
1293 | if (arg == NULL) | |
1294 | error_no_arg ("integer to set it to."); | |
1295 | *(unsigned int *) c->var = parse_and_eval_address (arg); | |
1296 | if (*(unsigned int *) c->var == 0) | |
1297 | *(unsigned int *) c->var = UINT_MAX; | |
1298 | break; | |
1299 | case var_integer: | |
1300 | { | |
1301 | unsigned int val; | |
1302 | if (arg == NULL) | |
1303 | error_no_arg ("integer to set it to."); | |
1304 | val = parse_and_eval_address (arg); | |
1305 | if (val == 0) | |
1306 | *(int *) c->var = INT_MAX; | |
1307 | else if (val >= INT_MAX) | |
1308 | error ("integer %u out of range", val); | |
1309 | else | |
1310 | *(int *) c->var = val; | |
1311 | break; | |
1312 | } | |
1313 | case var_zinteger: | |
1314 | if (arg == NULL) | |
1315 | error_no_arg ("integer to set it to."); | |
1316 | *(int *) c->var = parse_and_eval_address (arg); | |
1317 | break; | |
1318 | case var_enum: | |
1319 | { | |
1320 | int i; | |
1321 | int len; | |
1322 | int nmatches; | |
1323 | char *match = NULL; | |
1324 | char *p; | |
1325 | ||
1326 | /* if no argument was supplied, print an informative error message */ | |
1327 | if (arg == NULL) | |
1328 | { | |
1329 | char msg[1024]; | |
1330 | strcpy (msg, "Requires an argument. Valid arguments are "); | |
1331 | for (i = 0; c->enums[i]; i++) | |
1332 | { | |
1333 | if (i != 0) | |
1334 | strcat (msg, ", "); | |
1335 | strcat (msg, c->enums[i]); | |
1336 | } | |
1337 | strcat (msg, "."); | |
1338 | error (msg); | |
1339 | } | |
1340 | ||
1341 | p = strchr (arg, ' '); | |
c5aa993b | 1342 | |
c906108c SS |
1343 | if (p) |
1344 | len = p - arg; | |
1345 | else | |
1346 | len = strlen (arg); | |
1347 | ||
1348 | nmatches = 0; | |
1349 | for (i = 0; c->enums[i]; i++) | |
1350 | if (strncmp (arg, c->enums[i], len) == 0) | |
1351 | { | |
1352 | match = c->enums[i]; | |
1353 | nmatches++; | |
1354 | } | |
1355 | ||
1356 | if (nmatches <= 0) | |
1357 | error ("Undefined item: \"%s\".", arg); | |
1358 | ||
1359 | if (nmatches > 1) | |
1360 | error ("Ambiguous item \"%s\".", arg); | |
1361 | ||
c5aa993b | 1362 | *(char **) c->var = match; |
c906108c SS |
1363 | } |
1364 | break; | |
1365 | default: | |
1366 | error ("gdb internal error: bad var_type in do_setshow_command"); | |
1367 | } | |
1368 | } | |
1369 | else if (c->type == show_cmd) | |
1370 | { | |
1371 | /* Print doc minus "show" at start. */ | |
1372 | print_doc_line (gdb_stdout, c->doc + 5); | |
c5aa993b | 1373 | |
c906108c SS |
1374 | fputs_filtered (" is ", gdb_stdout); |
1375 | wrap_here (" "); | |
1376 | switch (c->var_type) | |
1377 | { | |
c5aa993b JM |
1378 | case var_string: |
1379 | { | |
1380 | unsigned char *p; | |
c906108c | 1381 | |
c5aa993b JM |
1382 | fputs_filtered ("\"", gdb_stdout); |
1383 | if (*(unsigned char **) c->var) | |
43e526b9 | 1384 | fputstr_filtered (*(unsigned char **) c->var, '"', gdb_stdout); |
c5aa993b JM |
1385 | fputs_filtered ("\"", gdb_stdout); |
1386 | } | |
1387 | break; | |
1388 | case var_string_noescape: | |
1389 | case var_filename: | |
1390 | case var_enum: | |
c906108c | 1391 | fputs_filtered ("\"", gdb_stdout); |
c5aa993b JM |
1392 | if (*(char **) c->var) |
1393 | fputs_filtered (*(char **) c->var, gdb_stdout); | |
c906108c | 1394 | fputs_filtered ("\"", gdb_stdout); |
c906108c | 1395 | break; |
c5aa993b JM |
1396 | case var_boolean: |
1397 | fputs_filtered (*(int *) c->var ? "on" : "off", gdb_stdout); | |
1398 | break; | |
1399 | case var_uinteger: | |
1400 | if (*(unsigned int *) c->var == UINT_MAX) | |
1401 | { | |
1402 | fputs_filtered ("unlimited", gdb_stdout); | |
1403 | break; | |
1404 | } | |
1405 | /* else fall through */ | |
1406 | case var_zinteger: | |
1407 | fprintf_filtered (gdb_stdout, "%u", *(unsigned int *) c->var); | |
1408 | break; | |
1409 | case var_integer: | |
1410 | if (*(int *) c->var == INT_MAX) | |
1411 | { | |
1412 | fputs_filtered ("unlimited", gdb_stdout); | |
1413 | } | |
1414 | else | |
1415 | fprintf_filtered (gdb_stdout, "%d", *(int *) c->var); | |
1416 | break; | |
1417 | ||
1418 | default: | |
1419 | error ("gdb internal error: bad var_type in do_setshow_command"); | |
c906108c | 1420 | } |
c906108c SS |
1421 | fputs_filtered (".\n", gdb_stdout); |
1422 | } | |
1423 | else | |
1424 | error ("gdb internal error: bad cmd_type in do_setshow_command"); | |
1425 | (*c->function.sfunc) (NULL, from_tty, c); | |
96baa820 JM |
1426 | if (c->type == set_cmd && set_hook) |
1427 | set_hook (c); | |
c906108c SS |
1428 | } |
1429 | ||
1430 | /* Show all the settings in a list of show commands. */ | |
1431 | ||
1432 | void | |
1433 | cmd_show_list (list, from_tty, prefix) | |
1434 | struct cmd_list_element *list; | |
1435 | int from_tty; | |
1436 | char *prefix; | |
1437 | { | |
c5aa993b JM |
1438 | for (; list != NULL; list = list->next) |
1439 | { | |
1440 | /* If we find a prefix, run its list, prefixing our output by its | |
1441 | prefix (with "show " skipped). */ | |
1442 | if (list->prefixlist && !list->abbrev_flag) | |
1443 | cmd_show_list (*list->prefixlist, from_tty, list->prefixname + 5); | |
1444 | if (list->type == show_cmd) | |
1445 | { | |
1446 | fputs_filtered (prefix, gdb_stdout); | |
1447 | fputs_filtered (list->name, gdb_stdout); | |
1448 | fputs_filtered (": ", gdb_stdout); | |
1449 | do_setshow_command ((char *) NULL, from_tty, list); | |
1450 | } | |
1451 | } | |
c906108c SS |
1452 | } |
1453 | ||
1454 | /* ARGSUSED */ | |
1455 | static void | |
1456 | shell_escape (arg, from_tty) | |
1457 | char *arg; | |
1458 | int from_tty; | |
1459 | { | |
1460 | #ifdef CANT_FORK | |
53a5351d JM |
1461 | /* If ARG is NULL, they want an inferior shell, but `system' just |
1462 | reports if the shell is available when passed a NULL arg. */ | |
1463 | int rc = system (arg ? arg : ""); | |
1464 | ||
1465 | if (!arg) | |
1466 | arg = "inferior shell"; | |
1467 | ||
1468 | if (rc == -1) | |
1469 | { | |
1470 | fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", arg, | |
1471 | safe_strerror (errno)); | |
1472 | gdb_flush (gdb_stderr); | |
1473 | } | |
1474 | else if (rc) | |
1475 | { | |
1476 | fprintf_unfiltered (gdb_stderr, "%s exited with status %d\n", arg, rc); | |
1477 | gdb_flush (gdb_stderr); | |
1478 | } | |
1479 | #ifdef __DJGPP__ | |
1480 | /* Make sure to return to the directory GDB thinks it is, in case the | |
1481 | shell command we just ran changed it. */ | |
1482 | chdir (current_directory); | |
1483 | #endif | |
c906108c SS |
1484 | #else /* Can fork. */ |
1485 | int rc, status, pid; | |
1486 | char *p, *user_shell; | |
1487 | ||
1488 | if ((user_shell = (char *) getenv ("SHELL")) == NULL) | |
1489 | user_shell = "/bin/sh"; | |
1490 | ||
1491 | /* Get the name of the shell for arg0 */ | |
1492 | if ((p = strrchr (user_shell, '/')) == NULL) | |
1493 | p = user_shell; | |
1494 | else | |
1495 | p++; /* Get past '/' */ | |
1496 | ||
c5aa993b | 1497 | if ((pid = fork ()) == 0) |
c906108c SS |
1498 | { |
1499 | if (!arg) | |
1500 | execl (user_shell, p, 0); | |
1501 | else | |
1502 | execl (user_shell, p, "-c", arg, 0); | |
1503 | ||
1504 | fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell, | |
1505 | safe_strerror (errno)); | |
1506 | gdb_flush (gdb_stderr); | |
1507 | _exit (0177); | |
1508 | } | |
1509 | ||
1510 | if (pid != -1) | |
1511 | while ((rc = wait (&status)) != pid && rc != -1) | |
1512 | ; | |
1513 | else | |
1514 | error ("Fork failed"); | |
1515 | #endif /* Can fork. */ | |
1516 | } | |
1517 | ||
1518 | static void | |
1519 | make_command (arg, from_tty) | |
1520 | char *arg; | |
1521 | int from_tty; | |
1522 | { | |
1523 | char *p; | |
1524 | ||
1525 | if (arg == 0) | |
1526 | p = "make"; | |
1527 | else | |
1528 | { | |
c5aa993b | 1529 | p = xmalloc (sizeof ("make ") + strlen (arg)); |
c906108c | 1530 | strcpy (p, "make "); |
c5aa993b | 1531 | strcpy (p + sizeof ("make ") - 1, arg); |
c906108c | 1532 | } |
c5aa993b | 1533 | |
c906108c SS |
1534 | shell_escape (p, from_tty); |
1535 | } | |
1536 | ||
1537 | static void | |
1538 | show_user_1 (c, stream) | |
1539 | struct cmd_list_element *c; | |
1540 | GDB_FILE *stream; | |
1541 | { | |
1542 | register struct command_line *cmdlines; | |
1543 | ||
1544 | cmdlines = c->user_commands; | |
1545 | if (!cmdlines) | |
1546 | return; | |
1547 | fputs_filtered ("User command ", stream); | |
1548 | fputs_filtered (c->name, stream); | |
1549 | fputs_filtered (":\n", stream); | |
1550 | ||
1551 | while (cmdlines) | |
1552 | { | |
9e086581 | 1553 | print_command_line (cmdlines, 4, stream); |
c906108c SS |
1554 | cmdlines = cmdlines->next; |
1555 | } | |
1556 | fputs_filtered ("\n", stream); | |
1557 | } | |
1558 | ||
1559 | /* ARGSUSED */ | |
1560 | static void | |
1561 | show_user (args, from_tty) | |
1562 | char *args; | |
1563 | int from_tty; | |
1564 | { | |
1565 | struct cmd_list_element *c; | |
1566 | extern struct cmd_list_element *cmdlist; | |
1567 | ||
1568 | if (args) | |
1569 | { | |
1570 | c = lookup_cmd (&args, cmdlist, "", 0, 1); | |
1571 | if (c->class != class_user) | |
1572 | error ("Not a user command."); | |
1573 | show_user_1 (c, gdb_stdout); | |
1574 | } | |
1575 | else | |
1576 | { | |
1577 | for (c = cmdlist; c; c = c->next) | |
1578 | { | |
1579 | if (c->class == class_user) | |
1580 | show_user_1 (c, gdb_stdout); | |
1581 | } | |
1582 | } | |
1583 | } | |
1584 | ||
1585 | void | |
1586 | _initialize_command () | |
1587 | { | |
1588 | add_com ("shell", class_support, shell_escape, | |
1589 | "Execute the rest of the line as a shell command. \n\ | |
1590 | With no arguments, run an inferior shell."); | |
1591 | ||
1592 | if (xdb_commands) | |
c5aa993b | 1593 | add_com_alias ("!", "shell", class_support, 0); |
c906108c SS |
1594 | |
1595 | add_com ("make", class_support, make_command, | |
c5aa993b JM |
1596 | "Run the ``make'' program using the rest of the line as arguments."); |
1597 | add_cmd ("user", no_class, show_user, | |
c906108c SS |
1598 | "Show definitions of user defined commands.\n\ |
1599 | Argument is the name of the user defined command.\n\ | |
1600 | With no argument, show definitions of all user defined commands.", &showlist); | |
1601 | } |