1 /* Handle set and show GDB commands.
3 Copyright (c) 2000, 2001, 2002, 2003, 2007 Free Software Foundation, Inc.
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 3 of the License, or
8 (at your option) any later version.
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>. */
19 #include "readline/tilde.h"
22 #include "gdb_string.h"
26 #include "cli/cli-decode.h"
27 #include "cli/cli-cmds.h"
28 #include "cli/cli-setshow.h"
30 /* Prototypes for local functions */
32 static int parse_binary_operation (char *);
35 static enum auto_boolean
36 parse_auto_binary_operation (const char *arg)
38 if (arg != NULL && *arg != '\0')
40 int length = strlen (arg);
41 while (isspace (arg[length - 1]) && length > 0)
43 if (strncmp (arg, "on", length) == 0
44 || strncmp (arg, "1", length) == 0
45 || strncmp (arg, "yes", length) == 0
46 || strncmp (arg, "enable", length) == 0)
47 return AUTO_BOOLEAN_TRUE;
48 else if (strncmp (arg, "off", length) == 0
49 || strncmp (arg, "0", length) == 0
50 || strncmp (arg, "no", length) == 0
51 || strncmp (arg, "disable", length) == 0)
52 return AUTO_BOOLEAN_FALSE;
53 else if (strncmp (arg, "auto", length) == 0
54 || (strncmp (arg, "-1", length) == 0 && length > 1))
55 return AUTO_BOOLEAN_AUTO;
57 error (_("\"on\", \"off\" or \"auto\" expected."));
58 return AUTO_BOOLEAN_AUTO; /* pacify GCC */
62 parse_binary_operation (char *arg)
69 length = strlen (arg);
71 while (arg[length - 1] == ' ' || arg[length - 1] == '\t')
74 if (strncmp (arg, "on", length) == 0
75 || strncmp (arg, "1", length) == 0
76 || strncmp (arg, "yes", length) == 0
77 || strncmp (arg, "enable", length) == 0)
79 else if (strncmp (arg, "off", length) == 0
80 || strncmp (arg, "0", length) == 0
81 || strncmp (arg, "no", length) == 0
82 || strncmp (arg, "disable", length) == 0)
86 error (_("\"on\" or \"off\" expected."));
92 deprecated_show_value_hack (struct ui_file *ignore_file,
94 struct cmd_list_element *c,
97 /* If there's no command or value, don't try to print it out. */
98 if (c == NULL || value == NULL)
100 /* Print doc minus "show" at start. */
101 print_doc_line (gdb_stdout, c->doc + 5);
105 case var_string_noescape:
106 case var_optional_filename:
109 printf_filtered ((" is \"%s\".\n"), value);
112 printf_filtered ((" is %s.\n"), value);
117 /* Do a "set" or "show" command. ARG is NULL if no argument, or the text
118 of the argument, and FROM_TTY is nonzero if this command is being entered
119 directly by the user (i.e. these are just like any other
120 command). C is the command list element for the command. */
123 do_setshow_command (char *arg, int from_tty, struct cmd_list_element *c)
125 if (c->type == set_cmd)
138 new = (char *) xmalloc (strlen (arg) + 2);
141 while ((ch = *p++) != '\000')
145 /* \ at end of argument is used after spaces
146 so they won't be lost. */
147 /* This is obsolete now that we no longer strip
148 trailing whitespace and actually, the backslash
149 didn't get here in my test, readline or
150 something did something funky with a backslash
151 right before a newline. */
154 ch = parse_escape (&p);
164 if (*(p - 1) != '\\')
168 new = (char *) xrealloc (new, q - new);
169 if (*(char **) c->var != NULL)
170 xfree (*(char **) c->var);
171 *(char **) c->var = new;
174 case var_string_noescape:
177 if (*(char **) c->var != NULL)
178 xfree (*(char **) c->var);
179 *(char **) c->var = savestring (arg, strlen (arg));
181 case var_optional_filename:
184 if (*(char **) c->var != NULL)
185 xfree (*(char **) c->var);
186 *(char **) c->var = savestring (arg, strlen (arg));
190 error_no_arg (_("filename to set it to."));
191 if (*(char **) c->var != NULL)
192 xfree (*(char **) c->var);
194 /* Clear trailing whitespace of filename. */
195 char *ptr = arg + strlen (arg) - 1;
196 while (ptr >= arg && (*ptr == ' ' || *ptr == '\t'))
200 *(char **) c->var = tilde_expand (arg);
203 *(int *) c->var = parse_binary_operation (arg);
205 case var_auto_boolean:
206 *(enum auto_boolean *) c->var = parse_auto_binary_operation (arg);
210 error_no_arg (_("integer to set it to."));
211 *(unsigned int *) c->var = parse_and_eval_long (arg);
212 if (*(unsigned int *) c->var == 0)
213 *(unsigned int *) c->var = UINT_MAX;
219 error_no_arg (_("integer to set it to."));
220 val = parse_and_eval_long (arg);
222 *(int *) c->var = INT_MAX;
223 else if (val >= INT_MAX)
224 error (_("integer %u out of range"), val);
226 *(int *) c->var = val;
231 error_no_arg (_("integer to set it to."));
232 *(int *) c->var = parse_and_eval_long (arg);
239 const char *match = NULL;
242 /* if no argument was supplied, print an informative error message */
247 for (i = 0; c->enums[i]; i++)
248 msg_len += strlen (c->enums[i]) + 2;
250 msg = xmalloc (msg_len);
252 make_cleanup (xfree, msg);
254 for (i = 0; c->enums[i]; i++)
258 strcat (msg, c->enums[i]);
260 error (_("Requires an argument. Valid arguments are %s."), msg);
263 p = strchr (arg, ' ');
271 for (i = 0; c->enums[i]; i++)
272 if (strncmp (arg, c->enums[i], len) == 0)
274 if (c->enums[i][len] == '\0')
278 break; /* exact match. */
288 error (_("Undefined item: \"%s\"."), arg);
291 error (_("Ambiguous item \"%s\"."), arg);
293 *(const char **) c->var = match;
297 error (_("gdb internal error: bad var_type in do_setshow_command"));
300 else if (c->type == show_cmd)
302 struct cleanup *old_chain;
303 struct ui_stream *stb;
305 stb = ui_out_stream_new (uiout);
306 old_chain = make_cleanup_ui_out_stream_delete (stb);
308 /* Possibly call the pre hook. */
309 if (c->pre_show_hook)
310 (c->pre_show_hook) (c);
315 if (*(char **) c->var)
316 fputstr_filtered (*(char **) c->var, '"', stb->stream);
318 case var_string_noescape:
319 case var_optional_filename:
322 if (*(char **) c->var)
323 fputs_filtered (*(char **) c->var, stb->stream);
326 fputs_filtered (*(int *) c->var ? "on" : "off", stb->stream);
328 case var_auto_boolean:
329 switch (*(enum auto_boolean*) c->var)
331 case AUTO_BOOLEAN_TRUE:
332 fputs_filtered ("on", stb->stream);
334 case AUTO_BOOLEAN_FALSE:
335 fputs_filtered ("off", stb->stream);
337 case AUTO_BOOLEAN_AUTO:
338 fputs_filtered ("auto", stb->stream);
341 internal_error (__FILE__, __LINE__,
342 _("do_setshow_command: invalid var_auto_boolean"));
347 if (*(unsigned int *) c->var == UINT_MAX)
349 fputs_filtered ("unlimited", stb->stream);
352 /* else fall through */
354 fprintf_filtered (stb->stream, "%u", *(unsigned int *) c->var);
357 if (*(int *) c->var == INT_MAX)
359 fputs_filtered ("unlimited", stb->stream);
362 fprintf_filtered (stb->stream, "%d", *(int *) c->var);
366 error (_("gdb internal error: bad var_type in do_setshow_command"));
370 /* FIXME: cagney/2005-02-10: Need to split this in half: code to
371 convert the value into a string (esentially the above); and
372 code to print the value out. For the latter there should be
373 MI and CLI specific versions. */
375 if (ui_out_is_mi_like_p (uiout))
376 ui_out_field_stream (uiout, "value", stb);
380 char *value = ui_file_xstrdup (stb->stream, &length);
381 make_cleanup (xfree, value);
382 if (c->show_value_func != NULL)
383 c->show_value_func (gdb_stdout, from_tty, c, value);
385 deprecated_show_value_hack (gdb_stdout, from_tty, c, value);
387 do_cleanups (old_chain);
390 error (_("gdb internal error: bad cmd_type in do_setshow_command"));
391 c->func (c, NULL, from_tty);
392 if (c->type == set_cmd && deprecated_set_hook)
393 deprecated_set_hook (c);
396 /* Show all the settings in a list of show commands. */
399 cmd_show_list (struct cmd_list_element *list, int from_tty, char *prefix)
401 struct cleanup *showlist_chain;
403 showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist");
404 for (; list != NULL; list = list->next)
406 /* If we find a prefix, run its list, prefixing our output by its
407 prefix (with "show " skipped). */
408 if (list->prefixlist && !list->abbrev_flag)
410 struct cleanup *optionlist_chain
411 = make_cleanup_ui_out_tuple_begin_end (uiout, "optionlist");
412 char *new_prefix = strstr (list->prefixname, "show ") + 5;
413 if (ui_out_is_mi_like_p (uiout))
414 ui_out_field_string (uiout, "prefix", new_prefix);
415 cmd_show_list (*list->prefixlist, from_tty, new_prefix);
416 /* Close the tuple. */
417 do_cleanups (optionlist_chain);
421 struct cleanup *option_chain
422 = make_cleanup_ui_out_tuple_begin_end (uiout, "option");
423 ui_out_text (uiout, prefix);
424 ui_out_field_string (uiout, "name", list->name);
425 ui_out_text (uiout, ": ");
426 if (list->type == show_cmd)
427 do_setshow_command ((char *) NULL, from_tty, list);
429 cmd_func (list, NULL, from_tty);
430 /* Close the tuple. */
431 do_cleanups (option_chain);
434 /* Close the tuple. */
435 do_cleanups (showlist_chain);