1 /* Handle set and show GDB commands.
3 Copyright 2000, 2001, 2002, 2003 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., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, 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));
184 case var_optional_filename:
187 if (c->var_type == var_optional_filename)
190 error_no_arg (_("filename to set it to."));
192 if (*(char **) c->var != NULL)
193 xfree (*(char **) c->var);
194 *(char **) c->var = tilde_expand (arg);
197 *(int *) c->var = parse_binary_operation (arg);
199 case var_auto_boolean:
200 *(enum auto_boolean *) c->var = parse_auto_binary_operation (arg);
204 error_no_arg (_("integer to set it to."));
205 *(unsigned int *) c->var = parse_and_eval_long (arg);
206 if (*(unsigned int *) c->var == 0)
207 *(unsigned int *) c->var = UINT_MAX;
213 error_no_arg (_("integer to set it to."));
214 val = parse_and_eval_long (arg);
216 *(int *) c->var = INT_MAX;
217 else if (val >= INT_MAX)
218 error (_("integer %u out of range"), val);
220 *(int *) c->var = val;
225 error_no_arg (_("integer to set it to."));
226 *(int *) c->var = parse_and_eval_long (arg);
233 const char *match = NULL;
236 /* if no argument was supplied, print an informative error message */
240 strcpy (msg, "Requires an argument. Valid arguments are ");
241 for (i = 0; c->enums[i]; i++)
245 strcat (msg, c->enums[i]);
251 p = strchr (arg, ' ');
259 for (i = 0; c->enums[i]; i++)
260 if (strncmp (arg, c->enums[i], len) == 0)
262 if (c->enums[i][len] == '\0')
266 break; /* exact match. */
276 error (_("Undefined item: \"%s\"."), arg);
279 error (_("Ambiguous item \"%s\"."), arg);
281 *(const char **) c->var = match;
285 error (_("gdb internal error: bad var_type in do_setshow_command"));
288 else if (c->type == show_cmd)
290 struct cleanup *old_chain;
291 struct ui_stream *stb;
293 stb = ui_out_stream_new (uiout);
294 old_chain = make_cleanup_ui_out_stream_delete (stb);
296 /* Possibly call the pre hook. */
297 if (c->pre_show_hook)
298 (c->pre_show_hook) (c);
306 if (*(unsigned char **) c->var)
307 fputstr_filtered (*(unsigned char **) c->var, '"', stb->stream);
310 case var_string_noescape:
311 case var_optional_filename:
314 if (*(char **) c->var)
315 fputs_filtered (*(char **) c->var, stb->stream);
318 fputs_filtered (*(int *) c->var ? "on" : "off", stb->stream);
320 case var_auto_boolean:
321 switch (*(enum auto_boolean*) c->var)
323 case AUTO_BOOLEAN_TRUE:
324 fputs_filtered ("on", stb->stream);
326 case AUTO_BOOLEAN_FALSE:
327 fputs_filtered ("off", stb->stream);
329 case AUTO_BOOLEAN_AUTO:
330 fputs_filtered ("auto", stb->stream);
333 internal_error (__FILE__, __LINE__,
334 _("do_setshow_command: invalid var_auto_boolean"));
339 if (*(unsigned int *) c->var == UINT_MAX)
341 fputs_filtered ("unlimited", stb->stream);
344 /* else fall through */
346 fprintf_filtered (stb->stream, "%u", *(unsigned int *) c->var);
349 if (*(int *) c->var == INT_MAX)
351 fputs_filtered ("unlimited", stb->stream);
354 fprintf_filtered (stb->stream, "%d", *(int *) c->var);
358 error (_("gdb internal error: bad var_type in do_setshow_command"));
362 /* FIXME: cagney/2005-02-10: Need to split this in half: code to
363 convert the value into a string (esentially the above); and
364 code to print the value out. For the latter there should be
365 MI and CLI specific versions. */
367 if (ui_out_is_mi_like_p (uiout))
368 ui_out_field_stream (uiout, "value", stb);
372 char *value = ui_file_xstrdup (stb->stream, &length);
373 make_cleanup (xfree, value);
374 if (c->show_value_func != NULL)
375 c->show_value_func (gdb_stdout, from_tty, c, value);
377 deprecated_show_value_hack (gdb_stdout, from_tty, c, value);
379 do_cleanups (old_chain);
382 error (_("gdb internal error: bad cmd_type in do_setshow_command"));
383 c->func (c, NULL, from_tty);
384 if (c->type == set_cmd && deprecated_set_hook)
385 deprecated_set_hook (c);
388 /* Show all the settings in a list of show commands. */
391 cmd_show_list (struct cmd_list_element *list, int from_tty, char *prefix)
393 struct cleanup *showlist_chain;
395 showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist");
396 for (; list != NULL; list = list->next)
398 /* If we find a prefix, run its list, prefixing our output by its
399 prefix (with "show " skipped). */
400 if (list->prefixlist && !list->abbrev_flag)
402 struct cleanup *optionlist_chain
403 = make_cleanup_ui_out_tuple_begin_end (uiout, "optionlist");
404 char *new_prefix = strstr (list->prefixname, "show ") + 5;
405 if (ui_out_is_mi_like_p (uiout))
406 ui_out_field_string (uiout, "prefix", new_prefix);
407 cmd_show_list (*list->prefixlist, from_tty, new_prefix);
408 /* Close the tuple. */
409 do_cleanups (optionlist_chain);
411 if (list->type == show_cmd)
413 struct cleanup *option_chain
414 = make_cleanup_ui_out_tuple_begin_end (uiout, "option");
415 ui_out_text (uiout, prefix);
416 ui_out_field_string (uiout, "name", list->name);
417 ui_out_text (uiout, ": ");
418 do_setshow_command ((char *) NULL, from_tty, list);
419 /* Close the tuple. */
420 do_cleanups (option_chain);
423 /* Close the tuple. */
424 do_cleanups (showlist_chain);