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 2 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, write to the Free Software
17 Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 Boston, MA 02110-1301, USA. */
21 #include "readline/tilde.h"
24 #include "gdb_string.h"
28 #include "cli/cli-decode.h"
29 #include "cli/cli-cmds.h"
30 #include "cli/cli-setshow.h"
32 /* Prototypes for local functions */
34 static int parse_binary_operation (char *);
37 static enum auto_boolean
38 parse_auto_binary_operation (const char *arg)
40 if (arg != NULL && *arg != '\0')
42 int length = strlen (arg);
43 while (isspace (arg[length - 1]) && length > 0)
45 if (strncmp (arg, "on", length) == 0
46 || strncmp (arg, "1", length) == 0
47 || strncmp (arg, "yes", length) == 0
48 || strncmp (arg, "enable", length) == 0)
49 return AUTO_BOOLEAN_TRUE;
50 else if (strncmp (arg, "off", length) == 0
51 || strncmp (arg, "0", length) == 0
52 || strncmp (arg, "no", length) == 0
53 || strncmp (arg, "disable", length) == 0)
54 return AUTO_BOOLEAN_FALSE;
55 else if (strncmp (arg, "auto", length) == 0
56 || (strncmp (arg, "-1", length) == 0 && length > 1))
57 return AUTO_BOOLEAN_AUTO;
59 error (_("\"on\", \"off\" or \"auto\" expected."));
60 return AUTO_BOOLEAN_AUTO; /* pacify GCC */
64 parse_binary_operation (char *arg)
71 length = strlen (arg);
73 while (arg[length - 1] == ' ' || arg[length - 1] == '\t')
76 if (strncmp (arg, "on", length) == 0
77 || strncmp (arg, "1", length) == 0
78 || strncmp (arg, "yes", length) == 0
79 || strncmp (arg, "enable", length) == 0)
81 else if (strncmp (arg, "off", length) == 0
82 || strncmp (arg, "0", length) == 0
83 || strncmp (arg, "no", length) == 0
84 || strncmp (arg, "disable", length) == 0)
88 error (_("\"on\" or \"off\" expected."));
94 deprecated_show_value_hack (struct ui_file *ignore_file,
96 struct cmd_list_element *c,
99 /* If there's no command or value, don't try to print it out. */
100 if (c == NULL || value == NULL)
102 /* Print doc minus "show" at start. */
103 print_doc_line (gdb_stdout, c->doc + 5);
107 case var_string_noescape:
108 case var_optional_filename:
111 printf_filtered ((" is \"%s\".\n"), value);
114 printf_filtered ((" is %s.\n"), value);
119 /* Do a "set" or "show" command. ARG is NULL if no argument, or the text
120 of the argument, and FROM_TTY is nonzero if this command is being entered
121 directly by the user (i.e. these are just like any other
122 command). C is the command list element for the command. */
125 do_setshow_command (char *arg, int from_tty, struct cmd_list_element *c)
127 if (c->type == set_cmd)
140 new = (char *) xmalloc (strlen (arg) + 2);
143 while ((ch = *p++) != '\000')
147 /* \ at end of argument is used after spaces
148 so they won't be lost. */
149 /* This is obsolete now that we no longer strip
150 trailing whitespace and actually, the backslash
151 didn't get here in my test, readline or
152 something did something funky with a backslash
153 right before a newline. */
156 ch = parse_escape (&p);
166 if (*(p - 1) != '\\')
170 new = (char *) xrealloc (new, q - new);
171 if (*(char **) c->var != NULL)
172 xfree (*(char **) c->var);
173 *(char **) c->var = new;
176 case var_string_noescape:
179 if (*(char **) c->var != NULL)
180 xfree (*(char **) c->var);
181 *(char **) c->var = savestring (arg, strlen (arg));
183 case var_optional_filename:
186 if (*(char **) c->var != NULL)
187 xfree (*(char **) c->var);
188 *(char **) c->var = savestring (arg, strlen (arg));
192 error_no_arg (_("filename to set it to."));
193 if (*(char **) c->var != NULL)
194 xfree (*(char **) c->var);
196 /* Clear trailing whitespace of filename. */
197 char *ptr = arg + strlen (arg) - 1;
198 while (ptr >= arg && (*ptr == ' ' || *ptr == '\t'))
202 *(char **) c->var = tilde_expand (arg);
205 *(int *) c->var = parse_binary_operation (arg);
207 case var_auto_boolean:
208 *(enum auto_boolean *) c->var = parse_auto_binary_operation (arg);
212 error_no_arg (_("integer to set it to."));
213 *(unsigned int *) c->var = parse_and_eval_long (arg);
214 if (*(unsigned int *) c->var == 0)
215 *(unsigned int *) c->var = UINT_MAX;
221 error_no_arg (_("integer to set it to."));
222 val = parse_and_eval_long (arg);
224 *(int *) c->var = INT_MAX;
225 else if (val >= INT_MAX)
226 error (_("integer %u out of range"), val);
228 *(int *) c->var = val;
233 error_no_arg (_("integer to set it to."));
234 *(int *) c->var = parse_and_eval_long (arg);
241 const char *match = NULL;
244 /* if no argument was supplied, print an informative error message */
248 strcpy (msg, "Requires an argument. Valid arguments are ");
249 for (i = 0; c->enums[i]; i++)
253 strcat (msg, c->enums[i]);
259 p = strchr (arg, ' ');
267 for (i = 0; c->enums[i]; i++)
268 if (strncmp (arg, c->enums[i], len) == 0)
270 if (c->enums[i][len] == '\0')
274 break; /* exact match. */
284 error (_("Undefined item: \"%s\"."), arg);
287 error (_("Ambiguous item \"%s\"."), arg);
289 *(const char **) c->var = match;
293 error (_("gdb internal error: bad var_type in do_setshow_command"));
296 else if (c->type == show_cmd)
298 struct cleanup *old_chain;
299 struct ui_stream *stb;
301 stb = ui_out_stream_new (uiout);
302 old_chain = make_cleanup_ui_out_stream_delete (stb);
304 /* Possibly call the pre hook. */
305 if (c->pre_show_hook)
306 (c->pre_show_hook) (c);
311 if (*(char **) c->var)
312 fputstr_filtered (*(char **) c->var, '"', stb->stream);
314 case var_string_noescape:
315 case var_optional_filename:
318 if (*(char **) c->var)
319 fputs_filtered (*(char **) c->var, stb->stream);
322 fputs_filtered (*(int *) c->var ? "on" : "off", stb->stream);
324 case var_auto_boolean:
325 switch (*(enum auto_boolean*) c->var)
327 case AUTO_BOOLEAN_TRUE:
328 fputs_filtered ("on", stb->stream);
330 case AUTO_BOOLEAN_FALSE:
331 fputs_filtered ("off", stb->stream);
333 case AUTO_BOOLEAN_AUTO:
334 fputs_filtered ("auto", stb->stream);
337 internal_error (__FILE__, __LINE__,
338 _("do_setshow_command: invalid var_auto_boolean"));
343 if (*(unsigned int *) c->var == UINT_MAX)
345 fputs_filtered ("unlimited", stb->stream);
348 /* else fall through */
350 fprintf_filtered (stb->stream, "%u", *(unsigned int *) c->var);
353 if (*(int *) c->var == INT_MAX)
355 fputs_filtered ("unlimited", stb->stream);
358 fprintf_filtered (stb->stream, "%d", *(int *) c->var);
362 error (_("gdb internal error: bad var_type in do_setshow_command"));
366 /* FIXME: cagney/2005-02-10: Need to split this in half: code to
367 convert the value into a string (esentially the above); and
368 code to print the value out. For the latter there should be
369 MI and CLI specific versions. */
371 if (ui_out_is_mi_like_p (uiout))
372 ui_out_field_stream (uiout, "value", stb);
376 char *value = ui_file_xstrdup (stb->stream, &length);
377 make_cleanup (xfree, value);
378 if (c->show_value_func != NULL)
379 c->show_value_func (gdb_stdout, from_tty, c, value);
381 deprecated_show_value_hack (gdb_stdout, from_tty, c, value);
383 do_cleanups (old_chain);
386 error (_("gdb internal error: bad cmd_type in do_setshow_command"));
387 c->func (c, NULL, from_tty);
388 if (c->type == set_cmd && deprecated_set_hook)
389 deprecated_set_hook (c);
392 /* Show all the settings in a list of show commands. */
395 cmd_show_list (struct cmd_list_element *list, int from_tty, char *prefix)
397 struct cleanup *showlist_chain;
399 showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist");
400 for (; list != NULL; list = list->next)
402 /* If we find a prefix, run its list, prefixing our output by its
403 prefix (with "show " skipped). */
404 if (list->prefixlist && !list->abbrev_flag)
406 struct cleanup *optionlist_chain
407 = make_cleanup_ui_out_tuple_begin_end (uiout, "optionlist");
408 char *new_prefix = strstr (list->prefixname, "show ") + 5;
409 if (ui_out_is_mi_like_p (uiout))
410 ui_out_field_string (uiout, "prefix", new_prefix);
411 cmd_show_list (*list->prefixlist, from_tty, new_prefix);
412 /* Close the tuple. */
413 do_cleanups (optionlist_chain);
417 struct cleanup *option_chain
418 = make_cleanup_ui_out_tuple_begin_end (uiout, "option");
419 ui_out_text (uiout, prefix);
420 ui_out_field_string (uiout, "name", list->name);
421 ui_out_text (uiout, ": ");
422 if (list->type == show_cmd)
423 do_setshow_command ((char *) NULL, from_tty, list);
425 cmd_func (list, NULL, from_tty);
426 /* Close the tuple. */
427 do_cleanups (option_chain);
430 /* Close the tuple. */
431 do_cleanups (showlist_chain);