759ef83693
may be NULL. * ui-file.c (ui_file_xstrdup): Don't dereference LENGTH if it is NULL. * aix-thread.c (aix_thread_extra_thread_info): Pass NULL as length parameter to ui_file_xstrdup. * arm-tdep.c (_initialize_arm_tdep): Ditto. * infrun.c (print_target_wait_results): Ditto. * language.c (add_language): Ditto. * linespec.c (cplusplus_error): Ditto. * remote.c (escape_buffer): Ditto. * typeprint.c (type_to_string): Ditto. * utils.c (error_stream): Ditto. * varobj.c (value_get_print_value): Ditto. * xtensa-tdep.c (xtensa_verify_config): Replace `dummy' local with `length' local. Pass it to ui_file_xstrdup, and avoid an strlen call. * gdbarch.sh (verify_gdbarch): Ditto. * gdbarch.c: Regenerate. * cli/cli-setshow.c (do_setshow_command): Pass NULL as length parameter to ui_file_xstrdup. * python/python-frame.c (frapy_str): Ditto. * python/python-type.c (typy_str): Use the length local instead of calling strlen. * python/python-value.c (valpy_str): Pass NULL as length parameter to ui_file_xstrdup.
444 lines
12 KiB
C
444 lines
12 KiB
C
/* Handle set and show GDB commands.
|
||
|
||
Copyright (c) 2000, 2001, 2002, 2003, 2007, 2008, 2009
|
||
Free Software Foundation, Inc.
|
||
|
||
This program is free software; you can redistribute it and/or modify
|
||
it under the terms of the GNU General Public License as published by
|
||
the Free Software Foundation; either version 3 of the License, or
|
||
(at your option) any later version.
|
||
|
||
This program is distributed in the hope that it will be useful,
|
||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
GNU General Public License for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with this program. If not, see <http://www.gnu.org/licenses/>. */
|
||
|
||
#include "defs.h"
|
||
#include "readline/tilde.h"
|
||
#include "value.h"
|
||
#include <ctype.h>
|
||
#include "gdb_string.h"
|
||
|
||
#include "ui-out.h"
|
||
|
||
#include "cli/cli-decode.h"
|
||
#include "cli/cli-cmds.h"
|
||
#include "cli/cli-setshow.h"
|
||
|
||
/* Prototypes for local functions */
|
||
|
||
static int parse_binary_operation (char *);
|
||
|
||
|
||
static enum auto_boolean
|
||
parse_auto_binary_operation (const char *arg)
|
||
{
|
||
if (arg != NULL && *arg != '\0')
|
||
{
|
||
int length = strlen (arg);
|
||
while (isspace (arg[length - 1]) && length > 0)
|
||
length--;
|
||
if (strncmp (arg, "on", length) == 0
|
||
|| strncmp (arg, "1", length) == 0
|
||
|| strncmp (arg, "yes", length) == 0
|
||
|| strncmp (arg, "enable", length) == 0)
|
||
return AUTO_BOOLEAN_TRUE;
|
||
else if (strncmp (arg, "off", length) == 0
|
||
|| strncmp (arg, "0", length) == 0
|
||
|| strncmp (arg, "no", length) == 0
|
||
|| strncmp (arg, "disable", length) == 0)
|
||
return AUTO_BOOLEAN_FALSE;
|
||
else if (strncmp (arg, "auto", length) == 0
|
||
|| (strncmp (arg, "-1", length) == 0 && length > 1))
|
||
return AUTO_BOOLEAN_AUTO;
|
||
}
|
||
error (_("\"on\", \"off\" or \"auto\" expected."));
|
||
return AUTO_BOOLEAN_AUTO; /* pacify GCC */
|
||
}
|
||
|
||
static int
|
||
parse_binary_operation (char *arg)
|
||
{
|
||
int length;
|
||
|
||
if (!arg || !*arg)
|
||
return 1;
|
||
|
||
length = strlen (arg);
|
||
|
||
while (arg[length - 1] == ' ' || arg[length - 1] == '\t')
|
||
length--;
|
||
|
||
if (strncmp (arg, "on", length) == 0
|
||
|| strncmp (arg, "1", length) == 0
|
||
|| strncmp (arg, "yes", length) == 0
|
||
|| strncmp (arg, "enable", length) == 0)
|
||
return 1;
|
||
else if (strncmp (arg, "off", length) == 0
|
||
|| strncmp (arg, "0", length) == 0
|
||
|| strncmp (arg, "no", length) == 0
|
||
|| strncmp (arg, "disable", length) == 0)
|
||
return 0;
|
||
else
|
||
{
|
||
error (_("\"on\" or \"off\" expected."));
|
||
return 0;
|
||
}
|
||
}
|
||
|
||
void
|
||
deprecated_show_value_hack (struct ui_file *ignore_file,
|
||
int ignore_from_tty,
|
||
struct cmd_list_element *c,
|
||
const char *value)
|
||
{
|
||
/* If there's no command or value, don't try to print it out. */
|
||
if (c == NULL || value == NULL)
|
||
return;
|
||
/* Print doc minus "show" at start. */
|
||
print_doc_line (gdb_stdout, c->doc + 5);
|
||
switch (c->var_type)
|
||
{
|
||
case var_string:
|
||
case var_string_noescape:
|
||
case var_optional_filename:
|
||
case var_filename:
|
||
case var_enum:
|
||
printf_filtered ((" is \"%s\".\n"), value);
|
||
break;
|
||
default:
|
||
printf_filtered ((" is %s.\n"), value);
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Do a "set" or "show" command. ARG is NULL if no argument, or the text
|
||
of the argument, and FROM_TTY is nonzero if this command is being entered
|
||
directly by the user (i.e. these are just like any other
|
||
command). C is the command list element for the command. */
|
||
|
||
void
|
||
do_setshow_command (char *arg, int from_tty, struct cmd_list_element *c)
|
||
{
|
||
if (c->type == set_cmd)
|
||
{
|
||
switch (c->var_type)
|
||
{
|
||
case var_string:
|
||
{
|
||
char *new;
|
||
char *p;
|
||
char *q;
|
||
int ch;
|
||
|
||
if (arg == NULL)
|
||
arg = "";
|
||
new = (char *) xmalloc (strlen (arg) + 2);
|
||
p = arg;
|
||
q = new;
|
||
while ((ch = *p++) != '\000')
|
||
{
|
||
if (ch == '\\')
|
||
{
|
||
/* \ at end of argument is used after spaces
|
||
so they won't be lost. */
|
||
/* This is obsolete now that we no longer strip
|
||
trailing whitespace and actually, the backslash
|
||
didn't get here in my test, readline or
|
||
something did something funky with a backslash
|
||
right before a newline. */
|
||
if (*p == 0)
|
||
break;
|
||
ch = parse_escape (&p);
|
||
if (ch == 0)
|
||
break; /* C loses */
|
||
else if (ch > 0)
|
||
*q++ = ch;
|
||
}
|
||
else
|
||
*q++ = ch;
|
||
}
|
||
#if 0
|
||
if (*(p - 1) != '\\')
|
||
*q++ = ' ';
|
||
#endif
|
||
*q++ = '\0';
|
||
new = (char *) xrealloc (new, q - new);
|
||
if (*(char **) c->var != NULL)
|
||
xfree (*(char **) c->var);
|
||
*(char **) c->var = new;
|
||
}
|
||
break;
|
||
case var_string_noescape:
|
||
if (arg == NULL)
|
||
arg = "";
|
||
if (*(char **) c->var != NULL)
|
||
xfree (*(char **) c->var);
|
||
*(char **) c->var = xstrdup (arg);
|
||
break;
|
||
case var_optional_filename:
|
||
if (arg == NULL)
|
||
arg = "";
|
||
if (*(char **) c->var != NULL)
|
||
xfree (*(char **) c->var);
|
||
*(char **) c->var = xstrdup (arg);
|
||
break;
|
||
case var_filename:
|
||
if (arg == NULL)
|
||
error_no_arg (_("filename to set it to."));
|
||
if (*(char **) c->var != NULL)
|
||
xfree (*(char **) c->var);
|
||
{
|
||
/* Clear trailing whitespace of filename. */
|
||
char *ptr = arg + strlen (arg) - 1;
|
||
while (ptr >= arg && (*ptr == ' ' || *ptr == '\t'))
|
||
ptr--;
|
||
*(ptr + 1) = '\0';
|
||
}
|
||
*(char **) c->var = tilde_expand (arg);
|
||
break;
|
||
case var_boolean:
|
||
*(int *) c->var = parse_binary_operation (arg);
|
||
break;
|
||
case var_auto_boolean:
|
||
*(enum auto_boolean *) c->var = parse_auto_binary_operation (arg);
|
||
break;
|
||
case var_uinteger:
|
||
if (arg == NULL)
|
||
error_no_arg (_("integer to set it to."));
|
||
*(unsigned int *) c->var = parse_and_eval_long (arg);
|
||
if (*(unsigned int *) c->var == 0)
|
||
*(unsigned int *) c->var = UINT_MAX;
|
||
break;
|
||
case var_integer:
|
||
{
|
||
unsigned int val;
|
||
if (arg == NULL)
|
||
error_no_arg (_("integer to set it to."));
|
||
val = parse_and_eval_long (arg);
|
||
if (val == 0)
|
||
*(int *) c->var = INT_MAX;
|
||
else if (val >= INT_MAX)
|
||
error (_("integer %u out of range"), val);
|
||
else
|
||
*(int *) c->var = val;
|
||
break;
|
||
}
|
||
case var_zinteger:
|
||
if (arg == NULL)
|
||
error_no_arg (_("integer to set it to."));
|
||
*(int *) c->var = parse_and_eval_long (arg);
|
||
break;
|
||
case var_zuinteger:
|
||
if (arg == NULL)
|
||
error_no_arg (_("integer to set it to."));
|
||
*(unsigned int *) c->var = parse_and_eval_long (arg);
|
||
break;
|
||
case var_enum:
|
||
{
|
||
int i;
|
||
int len;
|
||
int nmatches;
|
||
const char *match = NULL;
|
||
char *p;
|
||
|
||
/* if no argument was supplied, print an informative error message */
|
||
if (arg == NULL)
|
||
{
|
||
char *msg;
|
||
int msg_len = 0;
|
||
for (i = 0; c->enums[i]; i++)
|
||
msg_len += strlen (c->enums[i]) + 2;
|
||
|
||
msg = xmalloc (msg_len);
|
||
*msg = '\0';
|
||
make_cleanup (xfree, msg);
|
||
|
||
for (i = 0; c->enums[i]; i++)
|
||
{
|
||
if (i != 0)
|
||
strcat (msg, ", ");
|
||
strcat (msg, c->enums[i]);
|
||
}
|
||
error (_("Requires an argument. Valid arguments are %s."), msg);
|
||
}
|
||
|
||
p = strchr (arg, ' ');
|
||
|
||
if (p)
|
||
len = p - arg;
|
||
else
|
||
len = strlen (arg);
|
||
|
||
nmatches = 0;
|
||
for (i = 0; c->enums[i]; i++)
|
||
if (strncmp (arg, c->enums[i], len) == 0)
|
||
{
|
||
if (c->enums[i][len] == '\0')
|
||
{
|
||
match = c->enums[i];
|
||
nmatches = 1;
|
||
break; /* exact match. */
|
||
}
|
||
else
|
||
{
|
||
match = c->enums[i];
|
||
nmatches++;
|
||
}
|
||
}
|
||
|
||
if (nmatches <= 0)
|
||
error (_("Undefined item: \"%s\"."), arg);
|
||
|
||
if (nmatches > 1)
|
||
error (_("Ambiguous item \"%s\"."), arg);
|
||
|
||
*(const char **) c->var = match;
|
||
}
|
||
break;
|
||
default:
|
||
error (_("gdb internal error: bad var_type in do_setshow_command"));
|
||
}
|
||
}
|
||
else if (c->type == show_cmd)
|
||
{
|
||
struct cleanup *old_chain;
|
||
struct ui_stream *stb;
|
||
|
||
stb = ui_out_stream_new (uiout);
|
||
old_chain = make_cleanup_ui_out_stream_delete (stb);
|
||
|
||
/* Possibly call the pre hook. */
|
||
if (c->pre_show_hook)
|
||
(c->pre_show_hook) (c);
|
||
|
||
switch (c->var_type)
|
||
{
|
||
case var_string:
|
||
if (*(char **) c->var)
|
||
fputstr_filtered (*(char **) c->var, '"', stb->stream);
|
||
break;
|
||
case var_string_noescape:
|
||
case var_optional_filename:
|
||
case var_filename:
|
||
case var_enum:
|
||
if (*(char **) c->var)
|
||
fputs_filtered (*(char **) c->var, stb->stream);
|
||
break;
|
||
case var_boolean:
|
||
fputs_filtered (*(int *) c->var ? "on" : "off", stb->stream);
|
||
break;
|
||
case var_auto_boolean:
|
||
switch (*(enum auto_boolean*) c->var)
|
||
{
|
||
case AUTO_BOOLEAN_TRUE:
|
||
fputs_filtered ("on", stb->stream);
|
||
break;
|
||
case AUTO_BOOLEAN_FALSE:
|
||
fputs_filtered ("off", stb->stream);
|
||
break;
|
||
case AUTO_BOOLEAN_AUTO:
|
||
fputs_filtered ("auto", stb->stream);
|
||
break;
|
||
default:
|
||
internal_error (__FILE__, __LINE__,
|
||
_("do_setshow_command: invalid var_auto_boolean"));
|
||
break;
|
||
}
|
||
break;
|
||
case var_uinteger:
|
||
if (*(unsigned int *) c->var == UINT_MAX)
|
||
{
|
||
fputs_filtered ("unlimited", stb->stream);
|
||
break;
|
||
}
|
||
/* else fall through */
|
||
case var_zuinteger:
|
||
case var_zinteger:
|
||
fprintf_filtered (stb->stream, "%u", *(unsigned int *) c->var);
|
||
break;
|
||
case var_integer:
|
||
if (*(int *) c->var == INT_MAX)
|
||
{
|
||
fputs_filtered ("unlimited", stb->stream);
|
||
}
|
||
else
|
||
fprintf_filtered (stb->stream, "%d", *(int *) c->var);
|
||
break;
|
||
|
||
default:
|
||
error (_("gdb internal error: bad var_type in do_setshow_command"));
|
||
}
|
||
|
||
|
||
/* FIXME: cagney/2005-02-10: Need to split this in half: code to
|
||
convert the value into a string (esentially the above); and
|
||
code to print the value out. For the latter there should be
|
||
MI and CLI specific versions. */
|
||
|
||
if (ui_out_is_mi_like_p (uiout))
|
||
ui_out_field_stream (uiout, "value", stb);
|
||
else
|
||
{
|
||
char *value = ui_file_xstrdup (stb->stream, NULL);
|
||
make_cleanup (xfree, value);
|
||
if (c->show_value_func != NULL)
|
||
c->show_value_func (gdb_stdout, from_tty, c, value);
|
||
else
|
||
deprecated_show_value_hack (gdb_stdout, from_tty, c, value);
|
||
}
|
||
do_cleanups (old_chain);
|
||
}
|
||
else
|
||
error (_("gdb internal error: bad cmd_type in do_setshow_command"));
|
||
c->func (c, NULL, from_tty);
|
||
if (c->type == set_cmd && deprecated_set_hook)
|
||
deprecated_set_hook (c);
|
||
}
|
||
|
||
/* Show all the settings in a list of show commands. */
|
||
|
||
void
|
||
cmd_show_list (struct cmd_list_element *list, int from_tty, char *prefix)
|
||
{
|
||
struct cleanup *showlist_chain;
|
||
|
||
showlist_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "showlist");
|
||
for (; list != NULL; list = list->next)
|
||
{
|
||
/* If we find a prefix, run its list, prefixing our output by its
|
||
prefix (with "show " skipped). */
|
||
if (list->prefixlist && !list->abbrev_flag)
|
||
{
|
||
struct cleanup *optionlist_chain
|
||
= make_cleanup_ui_out_tuple_begin_end (uiout, "optionlist");
|
||
char *new_prefix = strstr (list->prefixname, "show ") + 5;
|
||
if (ui_out_is_mi_like_p (uiout))
|
||
ui_out_field_string (uiout, "prefix", new_prefix);
|
||
cmd_show_list (*list->prefixlist, from_tty, new_prefix);
|
||
/* Close the tuple. */
|
||
do_cleanups (optionlist_chain);
|
||
}
|
||
else
|
||
{
|
||
struct cleanup *option_chain
|
||
= make_cleanup_ui_out_tuple_begin_end (uiout, "option");
|
||
ui_out_text (uiout, prefix);
|
||
ui_out_field_string (uiout, "name", list->name);
|
||
ui_out_text (uiout, ": ");
|
||
if (list->type == show_cmd)
|
||
do_setshow_command ((char *) NULL, from_tty, list);
|
||
else
|
||
cmd_func (list, NULL, from_tty);
|
||
/* Close the tuple. */
|
||
do_cleanups (option_chain);
|
||
}
|
||
}
|
||
/* Close the tuple. */
|
||
do_cleanups (showlist_chain);
|
||
}
|
||
|