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