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