OpenE2K
/
binutils-gdb
12
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
binutils-gdb/gdb/command.c

2141 lines
56 KiB
C
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* Handle lists of commands, their decoding and documentation, for GDB.
Copyright 1986, 1989, 1990, 1991, 1998, 2000 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 2 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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include "defs.h"
#include "gdbcmd.h"
#include "symtab.h"
#include "value.h"
#include <ctype.h>
#include "gdb_string.h"
#ifdef UI_OUT
#include "ui-out.h"
#endif
#include "gdb_wait.h"
#include "gnu-regex.h"
/* FIXME: this should be auto-configured! */
#ifdef __MSDOS__
# define CANT_FORK
#endif
/* Prototypes for local functions */
static void undef_cmd_error (char *, char *);
static void show_user (char *, int);
static void show_user_1 (struct cmd_list_element *, struct ui_file *);
static void make_command (char *, int);
static void shell_escape (char *, int);
static int parse_binary_operation (char *);
static void print_doc_line (struct ui_file *, char *);
static struct cmd_list_element *find_cmd (char *command,
int len,
struct cmd_list_element *clist,
int ignore_help_classes,
int *nfound);
static void apropos_cmd_helper (struct ui_file *, struct cmd_list_element *,
struct re_pattern_buffer *, char *);
static void help_all (struct ui_file *stream);
void apropos_command (char *, int);
void _initialize_command (void);
/* Add element named NAME.
CLASS is the top level category into which commands are broken down
for "help" purposes.
FUN should be the function to execute the command;
it will get a character string as argument, with leading
and trailing blanks already eliminated.
DOC is a documentation string for the command.
Its first line should be a complete sentence.
It should start with ? for a command that is an abbreviation
or with * for a command that most users don't need to know about.
Add this command to command list *LIST.
Returns a pointer to the added command (not necessarily the head
of *LIST). */
struct cmd_list_element *
add_cmd (name, class, fun, doc, list)
char *name;
enum command_class class;
void (*fun) (char *, int);
char *doc;
struct cmd_list_element **list;
{
register struct cmd_list_element *c
= (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element));
struct cmd_list_element *p;
delete_cmd (name, list);
if (*list == NULL || STRCMP ((*list)->name, name) >= 0)
{
c->next = *list;
*list = c;
}
else
{
p = *list;
while (p->next && STRCMP (p->next->name, name) <= 0)
{
p = p->next;
}
c->next = p->next;
p->next = c;
}
c->name = name;
c->class = class;
c->function.cfunc = fun;
c->doc = doc;
c->flags = 0;
c->replacement = NULL;
c->hook = NULL;
c->prefixlist = NULL;
c->prefixname = NULL;
c->allow_unknown = 0;
c->abbrev_flag = 0;
c->completer = make_symbol_completion_list;
c->type = not_set_cmd;
c->var = NULL;
c->var_type = var_boolean;
c->enums = NULL;
c->user_commands = NULL;
c->hookee = NULL;
c->cmd_pointer = NULL;
return c;
}
/* Deprecates a command CMD.
REPLACEMENT is the name of the command which should be used in place
of this command, or NULL if no such command exists.
This function does not check to see if command REPLACEMENT exists
since gdb may not have gotten around to adding REPLACEMENT when this
function is called.
Returns a pointer to the deprecated command. */
struct cmd_list_element *
deprecate_cmd (cmd, replacement)
struct cmd_list_element *cmd;
char *replacement;
{
cmd->flags |= (CMD_DEPRECATED | DEPRECATED_WARN_USER);
if (replacement != NULL)
cmd->replacement = replacement;
else
cmd->replacement = NULL;
return cmd;
}
/* Same as above, except that the abbrev_flag is set. */
#if 0 /* Currently unused */
struct cmd_list_element *
add_abbrev_cmd (name, class, fun, doc, list)
char *name;
enum command_class class;
void (*fun) (char *, int);
char *doc;
struct cmd_list_element **list;
{
register struct cmd_list_element *c
= add_cmd (name, class, fun, doc, list);
c->abbrev_flag = 1;
return c;
}
#endif
struct cmd_list_element *
add_alias_cmd (name, oldname, class, abbrev_flag, list)
char *name;
char *oldname;
enum command_class class;
int abbrev_flag;
struct cmd_list_element **list;
{
/* Must do this since lookup_cmd tries to side-effect its first arg */
char *copied_name;
register struct cmd_list_element *old;
register struct cmd_list_element *c;
copied_name = (char *) alloca (strlen (oldname) + 1);
strcpy (copied_name, oldname);
old = lookup_cmd (&copied_name, *list, "", 1, 1);
if (old == 0)
{
delete_cmd (name, list);
return 0;
}
c = add_cmd (name, class, old->function.cfunc, old->doc, list);
c->prefixlist = old->prefixlist;
c->prefixname = old->prefixname;
c->allow_unknown = old->allow_unknown;
c->abbrev_flag = abbrev_flag;
c->cmd_pointer = old;
return c;
}
/* Like add_cmd but adds an element for a command prefix:
a name that should be followed by a subcommand to be looked up
in another command list. PREFIXLIST should be the address
of the variable containing that list. */
struct cmd_list_element *
add_prefix_cmd (name, class, fun, doc, prefixlist, prefixname,
allow_unknown, list)
char *name;
enum command_class class;
void (*fun) (char *, int);
char *doc;
struct cmd_list_element **prefixlist;
char *prefixname;
int allow_unknown;
struct cmd_list_element **list;
{
register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list);
c->prefixlist = prefixlist;
c->prefixname = prefixname;
c->allow_unknown = allow_unknown;
return c;
}
/* Like add_prefix_cmd but sets the abbrev_flag on the new command. */
struct cmd_list_element *
add_abbrev_prefix_cmd (name, class, fun, doc, prefixlist, prefixname,
allow_unknown, list)
char *name;
enum command_class class;
void (*fun) (char *, int);
char *doc;
struct cmd_list_element **prefixlist;
char *prefixname;
int allow_unknown;
struct cmd_list_element **list;
{
register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list);
c->prefixlist = prefixlist;
c->prefixname = prefixname;
c->allow_unknown = allow_unknown;
c->abbrev_flag = 1;
return c;
}
/* This is an empty "cfunc". */
void
not_just_help_class_command (args, from_tty)
char *args;
int from_tty;
{
}
/* This is an empty "sfunc". */
static void empty_sfunc (char *, int, struct cmd_list_element *);
static void
empty_sfunc (args, from_tty, c)
char *args;
int from_tty;
struct cmd_list_element *c;
{
}
/* Add element named NAME to command list LIST (the list for set
or some sublist thereof).
CLASS is as in add_cmd.
VAR_TYPE is the kind of thing we are setting.
VAR is address of the variable being controlled by this command.
DOC is the documentation string. */
struct cmd_list_element *
add_set_cmd (char *name,
enum command_class class,
var_types var_type,
void *var,
char *doc,
struct cmd_list_element **list)
{
struct cmd_list_element *c
= add_cmd (name, class, NO_FUNCTION, doc, list);
c->type = set_cmd;
c->var_type = var_type;
c->var = var;
/* This needs to be something besides NO_FUNCTION so that this isn't
treated as a help class. */
c->function.sfunc = empty_sfunc;
return c;
}
/* Add element named NAME to command list LIST (the list for set
or some sublist thereof).
CLASS is as in add_cmd.
ENUMLIST is a list of strings which may follow NAME.
VAR is address of the variable which will contain the matching string
(from ENUMLIST).
DOC is the documentation string. */
struct cmd_list_element *
add_set_enum_cmd (char *name,
enum command_class class,
const char *enumlist[],
const char **var,
char *doc,
struct cmd_list_element **list)
{
struct cmd_list_element *c
= add_set_cmd (name, class, var_enum, var, doc, list);
c->enums = enumlist;
return c;
}
/* Add element named NAME to command list LIST (the list for set
or some sublist thereof).
CLASS is as in add_cmd.
VAR is address of the variable which will contain the value.
DOC is the documentation string. */
struct cmd_list_element *
add_set_auto_boolean_cmd (char *name,
enum command_class class,
enum cmd_auto_boolean *var,
char *doc,
struct cmd_list_element **list)
{
static const char *auto_boolean_enums[] = { "on", "off", "auto", NULL };
struct cmd_list_element *c;
c = add_set_cmd (name, class, var_auto_boolean, var, doc, list);
c->enums = auto_boolean_enums;
return c;
}
/* Where SETCMD has already been added, add the corresponding show
command to LIST and return a pointer to the added command (not
necessarily the head of LIST). */
struct cmd_list_element *
add_show_from_set (setcmd, list)
struct cmd_list_element *setcmd;
struct cmd_list_element **list;
{
struct cmd_list_element *showcmd =
(struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element));
struct cmd_list_element *p;
memcpy (showcmd, setcmd, sizeof (struct cmd_list_element));
delete_cmd (showcmd->name, list);
showcmd->type = show_cmd;
/* Replace "set " at start of docstring with "show ". */
if (setcmd->doc[0] == 'S' && setcmd->doc[1] == 'e'
&& setcmd->doc[2] == 't' && setcmd->doc[3] == ' ')
showcmd->doc = concat ("Show ", setcmd->doc + 4, NULL);
else
fprintf_unfiltered (gdb_stderr, "GDB internal error: Bad docstring for set command\n");
if (*list == NULL || STRCMP ((*list)->name, showcmd->name) >= 0)
{
showcmd->next = *list;
*list = showcmd;
}
else
{
p = *list;
while (p->next && STRCMP (p->next->name, showcmd->name) <= 0)
{
p = p->next;
}
showcmd->next = p->next;
p->next = showcmd;
}
return showcmd;
}
/* Remove the command named NAME from the command list. */
void
delete_cmd (name, list)
char *name;
struct cmd_list_element **list;
{
register struct cmd_list_element *c;
struct cmd_list_element *p;
while (*list && STREQ ((*list)->name, name))
{
if ((*list)->hookee)
(*list)->hookee->hook = 0; /* Hook slips out of its mouth */
p = (*list)->next;
free ((PTR) * list);
*list = p;
}
if (*list)
for (c = *list; c->next;)
{
if (STREQ (c->next->name, name))
{
if (c->next->hookee)
c->next->hookee->hook = 0; /* hooked cmd gets away. */
p = c->next->next;
free ((PTR) c->next);
c->next = p;
}
else
c = c->next;
}
}
/* Recursively walk the commandlist structures, and print out the
documentation of commands that match our regex in either their
name, or their documentation.
*/
static void
apropos_cmd_helper (struct ui_file *stream, struct cmd_list_element *commandlist,
struct re_pattern_buffer *regex, char *prefix)
{
register struct cmd_list_element *c;
int returnvalue=1; /*Needed to avoid double printing*/
/* Walk through the commands */
for (c=commandlist;c;c=c->next)
{
if (c->name != NULL)
{
/* Try to match against the name*/
returnvalue=re_search(regex,c->name,strlen(c->name),0,strlen(c->name),NULL);
if (returnvalue >= 0)
{
/* Stolen from help_cmd_list. We don't directly use
* help_cmd_list because it doesn't let us print out
* single commands
*/
fprintf_filtered (stream, "%s%s -- ", prefix, c->name);
print_doc_line (stream, c->doc);
fputs_filtered ("\n", stream);
returnvalue=0; /*Set this so we don't print it again.*/
}
}
if (c->doc != NULL && returnvalue != 0)
{
/* Try to match against documentation */
if (re_search(regex,c->doc,strlen(c->doc),0,strlen(c->doc),NULL) >=0)
{
/* Stolen from help_cmd_list. We don't directly use
* help_cmd_list because it doesn't let us print out
* single commands
*/
fprintf_filtered (stream, "%s%s -- ", prefix, c->name);
print_doc_line (stream, c->doc);
fputs_filtered ("\n", stream);
}
}
/* Check if this command has subcommands */
if (c->prefixlist != NULL)
{
/* Recursively call ourselves on the subcommand list,
passing the right prefix in.
*/
apropos_cmd_helper(stream,*c->prefixlist,regex,c->prefixname);
}
}
}
/* Search through names of commands and documentations for a certain
regular expression.
*/
void
apropos_command (char *searchstr, int from_tty)
{
extern struct cmd_list_element *cmdlist; /*This is the main command list*/
regex_t pattern;
char *pattern_fastmap;
char errorbuffer[512];
pattern_fastmap=calloc(256,sizeof(char));
if (searchstr == NULL)
error("REGEXP string is empty");
if (regcomp(&pattern,searchstr,REG_ICASE) == 0)
{
pattern.fastmap=pattern_fastmap;
re_compile_fastmap(&pattern);
apropos_cmd_helper(gdb_stdout,cmdlist,&pattern,"");
}
else
{
regerror(regcomp(&pattern,searchstr,REG_ICASE),NULL,errorbuffer,512);
error("Error in regular expression:%s",errorbuffer);
}
free(pattern_fastmap);
}
/* This command really has to deal with two things:
* 1) I want documentation on *this string* (usually called by
* "help commandname").
* 2) I want documentation on *this list* (usually called by
* giving a command that requires subcommands. Also called by saying
* just "help".)
*
* I am going to split this into two seperate comamnds, help_cmd and
* help_list.
*/
void
help_cmd (command, stream)
char *command;
struct ui_file *stream;
{
struct cmd_list_element *c;
extern struct cmd_list_element *cmdlist;
if (!command)
{
help_list (cmdlist, "", all_classes, stream);
return;
}
if (strcmp (command, "all") == 0)
{
help_all (stream);
return;
}
c = lookup_cmd (&command, cmdlist, "", 0, 0);
if (c == 0)
return;
/* There are three cases here.
If c->prefixlist is nonzero, we have a prefix command.
Print its documentation, then list its subcommands.
If c->function is nonzero, we really have a command.
Print its documentation and return.
If c->function is zero, we have a class name.
Print its documentation (as if it were a command)
and then set class to the number of this class
so that the commands in the class will be listed. */
fputs_filtered (c->doc, stream);
fputs_filtered ("\n", stream);
if (c->prefixlist == 0 && c->function.cfunc != NULL)
return;
fprintf_filtered (stream, "\n");
/* If this is a prefix command, print it's subcommands */
if (c->prefixlist)
help_list (*c->prefixlist, c->prefixname, all_commands, stream);
/* If this is a class name, print all of the commands in the class */
if (c->function.cfunc == NULL)
help_list (cmdlist, "", c->class, stream);
if (c->hook)
fprintf_filtered (stream, "\nThis command has a hook defined: %s\n",
c->hook->name);
}
/*
* Get a specific kind of help on a command list.
*
* LIST is the list.
* CMDTYPE is the prefix to use in the title string.
* CLASS is the class with which to list the nodes of this list (see
* documentation for help_cmd_list below), As usual, ALL_COMMANDS for
* everything, ALL_CLASSES for just classes, and non-negative for only things
* in a specific class.
* and STREAM is the output stream on which to print things.
* If you call this routine with a class >= 0, it recurses.
*/
void
help_list (list, cmdtype, class, stream)
struct cmd_list_element *list;
char *cmdtype;
enum command_class class;
struct ui_file *stream;
{
int len;
char *cmdtype1, *cmdtype2;
/* If CMDTYPE is "foo ", CMDTYPE1 gets " foo" and CMDTYPE2 gets "foo sub" */
len = strlen (cmdtype);
cmdtype1 = (char *) alloca (len + 1);
cmdtype1[0] = 0;
cmdtype2 = (char *) alloca (len + 4);
cmdtype2[0] = 0;
if (len)
{
cmdtype1[0] = ' ';
strncpy (cmdtype1 + 1, cmdtype, len - 1);
cmdtype1[len] = 0;
strncpy (cmdtype2, cmdtype, len - 1);
strcpy (cmdtype2 + len - 1, " sub");
}
if (class == all_classes)
fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2);
else
fprintf_filtered (stream, "List of %scommands:\n\n", cmdtype2);
help_cmd_list (list, class, cmdtype, (int) class >= 0, stream);
if (class == all_classes)
fprintf_filtered (stream, "\n\
Type \"help%s\" followed by a class name for a list of commands in that class.",
cmdtype1);
fprintf_filtered (stream, "\n\
Type \"help%s\" followed by %scommand name for full documentation.\n\
Command name abbreviations are allowed if unambiguous.\n",
cmdtype1, cmdtype2);
}
static void
help_all (struct ui_file *stream)
{
struct cmd_list_element *c;
extern struct cmd_list_element *cmdlist;
for (c = cmdlist; c; c = c->next)
{
if (c->abbrev_flag)
continue;
/* If this is a prefix command, print it's subcommands */
if (c->prefixlist)
help_cmd_list (*c->prefixlist, all_commands, c->prefixname, 0, stream);
/* If this is a class name, print all of the commands in the class */
else if (c->function.cfunc == NULL)
help_cmd_list (cmdlist, c->class, "", 0, stream);
}
}
/* Print only the first line of STR on STREAM. */
static void
print_doc_line (stream, str)
struct ui_file *stream;
char *str;
{
static char *line_buffer = 0;
static int line_size;
register char *p;
if (!line_buffer)
{
line_size = 80;
line_buffer = (char *) xmalloc (line_size);
}
p = str;
while (*p && *p != '\n' && *p != '.' && *p != ',')
p++;
if (p - str > line_size - 1)
{
line_size = p - str + 1;
free ((PTR) line_buffer);
line_buffer = (char *) xmalloc (line_size);
}
strncpy (line_buffer, str, p - str);
line_buffer[p - str] = '\0';
if (islower (line_buffer[0]))
line_buffer[0] = toupper (line_buffer[0]);
#ifdef UI_OUT
ui_out_text (uiout, line_buffer);
#else
fputs_filtered (line_buffer, stream);
#endif
}
/*
* Implement a help command on command list LIST.
* RECURSE should be non-zero if this should be done recursively on
* all sublists of LIST.
* PREFIX is the prefix to print before each command name.
* STREAM is the stream upon which the output should be written.
* CLASS should be:
* A non-negative class number to list only commands in that
* class.
* ALL_COMMANDS to list all commands in list.
* ALL_CLASSES to list all classes in list.
*
* Note that RECURSE will be active on *all* sublists, not just the
* ones selected by the criteria above (ie. the selection mechanism
* is at the low level, not the high-level).
*/
void
help_cmd_list (list, class, prefix, recurse, stream)
struct cmd_list_element *list;
enum command_class class;
char *prefix;
int recurse;
struct ui_file *stream;
{
register struct cmd_list_element *c;
for (c = list; c; c = c->next)
{
if (c->abbrev_flag == 0 &&
(class == all_commands
|| (class == all_classes && c->function.cfunc == NULL)
|| (class == c->class && c->function.cfunc != NULL)))
{
fprintf_filtered (stream, "%s%s -- ", prefix, c->name);
print_doc_line (stream, c->doc);
fputs_filtered ("\n", stream);
}
if (recurse
&& c->prefixlist != 0
&& c->abbrev_flag == 0)
help_cmd_list (*c->prefixlist, class, c->prefixname, 1, stream);
}
}
/* Search the input clist for 'command'. Return the command if
found (or NULL if not), and return the number of commands
found in nfound */
static struct cmd_list_element *
find_cmd (command, len, clist, ignore_help_classes, nfound)
char *command;
int len;
struct cmd_list_element *clist;
int ignore_help_classes;
int *nfound;
{
struct cmd_list_element *found, *c;
found = (struct cmd_list_element *) NULL;
*nfound = 0;
for (c = clist; c; c = c->next)
if (!strncmp (command, c->name, len)
&& (!ignore_help_classes || c->function.cfunc))
{
found = c;
(*nfound)++;
if (c->name[len] == '\0')
{
*nfound = 1;
break;
}
}
return found;
}
/* This routine takes a line of TEXT and a CLIST in which to start the
lookup. When it returns it will have incremented the text pointer past
the section of text it matched, set *RESULT_LIST to point to the list in
which the last word was matched, and will return a pointer to the cmd
list element which the text matches. It will return NULL if no match at
all was possible. It will return -1 (cast appropriately, ick) if ambigous
matches are possible; in this case *RESULT_LIST will be set to point to
the list in which there are ambiguous choices (and *TEXT will be set to
the ambiguous text string).
If the located command was an abbreviation, this routine returns the base
command of the abbreviation.
It does no error reporting whatsoever; control will always return
to the superior routine.
In the case of an ambiguous return (-1), *RESULT_LIST will be set to point
at the prefix_command (ie. the best match) *or* (special case) will be NULL
if no prefix command was ever found. For example, in the case of "info a",
"info" matches without ambiguity, but "a" could be "args" or "address", so
*RESULT_LIST is set to the cmd_list_element for "info". So in this case
RESULT_LIST should not be interpeted as a pointer to the beginning of a
list; it simply points to a specific command. In the case of an ambiguous
return *TEXT is advanced past the last non-ambiguous prefix (e.g.
"info t" can be "info types" or "info target"; upon return *TEXT has been
advanced past "info ").
If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise
affect the operation).
This routine does *not* modify the text pointed to by TEXT.
If IGNORE_HELP_CLASSES is nonzero, ignore any command list elements which
are actually help classes rather than commands (i.e. the function field of
the struct cmd_list_element is NULL). */
struct cmd_list_element *
lookup_cmd_1 (text, clist, result_list, ignore_help_classes)
char **text;
struct cmd_list_element *clist, **result_list;
int ignore_help_classes;
{
char *p, *command;
int len, tmp, nfound;
struct cmd_list_element *found, *c;
char *line = *text;
while (**text == ' ' || **text == '\t')
(*text)++;
/* Treating underscores as part of command words is important
so that "set args_foo()" doesn't get interpreted as
"set args _foo()". */
for (p = *text;
*p && (isalnum (*p) || *p == '-' || *p == '_' ||
(tui_version &&
(*p == '+' || *p == '<' || *p == '>' || *p == '$')) ||
(xdb_commands && (*p == '!' || *p == '/' || *p == '?')));
p++)
;
/* If nothing but whitespace, return 0. */
if (p == *text)
return 0;
len = p - *text;
/* *text and p now bracket the first command word to lookup (and
it's length is len). We copy this into a local temporary */
command = (char *) alloca (len + 1);
for (tmp = 0; tmp < len; tmp++)
{
char x = (*text)[tmp];
command[tmp] = x;
}
command[len] = '\0';
/* Look it up. */
found = 0;
nfound = 0;
found = find_cmd (command, len, clist, ignore_help_classes, &nfound);
/*
** We didn't find the command in the entered case, so lower case it
** and search again.
*/
if (!found || nfound == 0)
{
for (tmp = 0; tmp < len; tmp++)
{
char x = command[tmp];
command[tmp] = isupper (x) ? tolower (x) : x;
}
found = find_cmd (command, len, clist, ignore_help_classes, &nfound);
}
/* If nothing matches, we have a simple failure. */
if (nfound == 0)
return 0;
if (nfound > 1)
{
if (result_list != NULL)
/* Will be modified in calling routine
if we know what the prefix command is. */
*result_list = 0;
return (struct cmd_list_element *) -1; /* Ambiguous. */
}
/* We've matched something on this list. Move text pointer forward. */
*text = p;
if (found->cmd_pointer)
{
/* We drop the alias (abbreviation) in favor of the command it is
pointing to. If the alias is deprecated, though, we need to
warn the user about it before we drop it. Note that while we
are warning about the alias, we may also warn about the command
itself and we will adjust the appropriate DEPRECATED_WARN_USER
flags */
if (found->flags & DEPRECATED_WARN_USER)
deprecated_cmd_warning (&line);
found = found->cmd_pointer;
}
/* If we found a prefix command, keep looking. */
if (found->prefixlist)
{
c = lookup_cmd_1 (text, *found->prefixlist, result_list,
ignore_help_classes);
if (!c)
{
/* Didn't find anything; this is as far as we got. */
if (result_list != NULL)
*result_list = clist;
return found;
}
else if (c == (struct cmd_list_element *) -1)
{
/* We've gotten this far properly, but the next step
is ambiguous. We need to set the result list to the best
we've found (if an inferior hasn't already set it). */
if (result_list != NULL)
if (!*result_list)
/* This used to say *result_list = *found->prefixlist
If that was correct, need to modify the documentation
at the top of this function to clarify what is supposed
to be going on. */
*result_list = found;
return c;
}
else
{
/* We matched! */
return c;
}
}
else
{
if (result_list != NULL)
*result_list = clist;
return found;
}
}
/* All this hair to move the space to the front of cmdtype */
static void
undef_cmd_error (cmdtype, q)
char *cmdtype, *q;
{
error ("Undefined %scommand: \"%s\". Try \"help%s%.*s\".",
cmdtype,
q,
*cmdtype ? " " : "",
strlen (cmdtype) - 1,
cmdtype);
}
/* Look up the contents of *LINE as a command in the command list LIST.
LIST is a chain of struct cmd_list_element's.
If it is found, return the struct cmd_list_element for that command
and update *LINE to point after the command name, at the first argument.
If not found, call error if ALLOW_UNKNOWN is zero
otherwise (or if error returns) return zero.
Call error if specified command is ambiguous,
unless ALLOW_UNKNOWN is negative.
CMDTYPE precedes the word "command" in the error message.
If INGNORE_HELP_CLASSES is nonzero, ignore any command list
elements which are actually help classes rather than commands (i.e.
the function field of the struct cmd_list_element is 0). */
struct cmd_list_element *
lookup_cmd (line, list, cmdtype, allow_unknown, ignore_help_classes)
char **line;
struct cmd_list_element *list;
char *cmdtype;
int allow_unknown;
int ignore_help_classes;
{
struct cmd_list_element *last_list = 0;
struct cmd_list_element *c =
lookup_cmd_1 (line, list, &last_list, ignore_help_classes);
#if 0
/* This is wrong for complete_command. */
char *ptr = (*line) + strlen (*line) - 1;
/* Clear off trailing whitespace. */
while (ptr >= *line && (*ptr == ' ' || *ptr == '\t'))
ptr--;
*(ptr + 1) = '\0';
#endif
if (!c)
{
if (!allow_unknown)
{
if (!*line)
error ("Lack of needed %scommand", cmdtype);
else
{
char *p = *line, *q;
while (isalnum (*p) || *p == '-')
p++;
q = (char *) alloca (p - *line + 1);
strncpy (q, *line, p - *line);
q[p - *line] = '\0';
undef_cmd_error (cmdtype, q);
}
}
else
return 0;
}
else if (c == (struct cmd_list_element *) -1)
{
/* Ambigous. Local values should be off prefixlist or called
values. */
int local_allow_unknown = (last_list ? last_list->allow_unknown :
allow_unknown);
char *local_cmdtype = last_list ? last_list->prefixname : cmdtype;
struct cmd_list_element *local_list =
(last_list ? *(last_list->prefixlist) : list);
if (local_allow_unknown < 0)
{
if (last_list)
return last_list; /* Found something. */
else
return 0; /* Found nothing. */
}
else
{
/* Report as error. */
int amb_len;
char ambbuf[100];
for (amb_len = 0;
((*line)[amb_len] && (*line)[amb_len] != ' '
&& (*line)[amb_len] != '\t');
amb_len++)
;
ambbuf[0] = 0;
for (c = local_list; c; c = c->next)
if (!strncmp (*line, c->name, amb_len))
{
if (strlen (ambbuf) + strlen (c->name) + 6 < (int) sizeof ambbuf)
{
if (strlen (ambbuf))
strcat (ambbuf, ", ");
strcat (ambbuf, c->name);
}
else
{
strcat (ambbuf, "..");
break;
}
}
error ("Ambiguous %scommand \"%s\": %s.", local_cmdtype,
*line, ambbuf);
return 0; /* lint */
}
}
else
{
/* We've got something. It may still not be what the caller
wants (if this command *needs* a subcommand). */
while (**line == ' ' || **line == '\t')
(*line)++;
if (c->prefixlist && **line && !c->allow_unknown)
undef_cmd_error (c->prefixname, *line);
/* Seems to be what he wants. Return it. */
return c;
}
return 0;
}
/* We are here presumably because an alias or command in *TEXT is
deprecated and a warning message should be generated. This function
decodes *TEXT and potentially generates a warning message as outlined
below.
Example for 'set endian big' which has a fictitious alias 'seb'.
If alias wasn't used in *TEXT, and the command is deprecated:
"warning: 'set endian big' is deprecated."
If alias was used, and only the alias is deprecated:
"warning: 'seb' an alias for the command 'set endian big' is deprecated."
If alias was used and command is deprecated (regardless of whether the
alias itself is deprecated:
"warning: 'set endian big' (seb) is deprecated."
After the message has been sent, clear the appropriate flags in the
command and/or the alias so the user is no longer bothered.
*/
void
deprecated_cmd_warning (char **text)
{
struct cmd_list_element *alias = NULL;
struct cmd_list_element *prefix_cmd = NULL;
struct cmd_list_element *cmd = NULL;
struct cmd_list_element *c;
char *type;
if (!lookup_cmd_composition (*text, &alias, &prefix_cmd, &cmd))
/* return if text doesn't evaluate to a command */
return;
if (!((alias ? (alias->flags & DEPRECATED_WARN_USER) : 0)
|| (cmd->flags & DEPRECATED_WARN_USER) ) )
/* return if nothing is deprecated */
return;
printf_filtered ("Warning:");
if (alias && !(cmd->flags & CMD_DEPRECATED))
printf_filtered (" '%s', an alias for the", alias->name);
printf_filtered (" command '");
if (prefix_cmd)
printf_filtered ("%s", prefix_cmd->prefixname);
printf_filtered ("%s", cmd->name);
if (alias && (cmd->flags & CMD_DEPRECATED))
printf_filtered ("' (%s) is deprecated.\n", alias->name);
else
printf_filtered ("' is deprecated.\n");
/* if it is only the alias that is deprecated, we want to indicate the
new alias, otherwise we'll indicate the new command */
if (alias && !(cmd->flags & CMD_DEPRECATED))
{
if (alias->replacement)
printf_filtered ("Use '%s'.\n\n", alias->replacement);
else
printf_filtered ("No alternative known.\n\n");
}
else
{
if (cmd->replacement)
printf_filtered ("Use '%s'.\n\n", cmd->replacement);
else
printf_filtered ("No alternative known.\n\n");
}
/* We've warned you, now we'll keep quiet */
if (alias)
alias->flags &= ~DEPRECATED_WARN_USER;
cmd->flags &= ~DEPRECATED_WARN_USER;
}
/* Look up the contents of LINE as a command in the command list 'cmdlist'.
Return 1 on success, 0 on failure.
If LINE refers to an alias, *alias will point to that alias.
If LINE is a postfix command (i.e. one that is preceeded by a prefix
command) set *prefix_cmd.
Set *cmd to point to the command LINE indicates.
If any of *alias, *prefix_cmd, or *cmd cannot be determined or do not
exist, they are NULL when we return.
*/
int
lookup_cmd_composition (char *text,
struct cmd_list_element **alias,
struct cmd_list_element **prefix_cmd,
struct cmd_list_element **cmd)
{
char *p, *command;
int len, tmp, nfound;
struct cmd_list_element *cur_list;
struct cmd_list_element *prev_cmd;
*alias = NULL;
*prefix_cmd = NULL;
*cmd = NULL;
cur_list = cmdlist;
while (1)
{
/* Go through as many command lists as we need to
to find the command TEXT refers to. */
prev_cmd = *cmd;
while (*text == ' ' || *text == '\t')
(text)++;
/* Treating underscores as part of command words is important
so that "set args_foo()" doesn't get interpreted as
"set args _foo()". */
for (p = text;
*p && (isalnum (*p) || *p == '-' || *p == '_' ||
(tui_version &&
(*p == '+' || *p == '<' || *p == '>' || *p == '$')) ||
(xdb_commands && (*p == '!' || *p == '/' || *p == '?')));
p++)
;
/* If nothing but whitespace, return. */
if (p == text)
return 0;
len = p - text;
/* text and p now bracket the first command word to lookup (and
it's length is len). We copy this into a local temporary */
command = (char *) alloca (len + 1);
for (tmp = 0; tmp < len; tmp++)
{
char x = text[tmp];
command[tmp] = x;
}
command[len] = '\0';
/* Look it up. */
*cmd = 0;
nfound = 0;
*cmd = find_cmd (command, len, cur_list, 1, &nfound);
/* We didn't find the command in the entered case, so lower case it
and search again.
*/
if (!*cmd || nfound == 0)
{
for (tmp = 0; tmp < len; tmp++)
{
char x = command[tmp];
command[tmp] = isupper (x) ? tolower (x) : x;
}
*cmd = find_cmd (command, len, cur_list, 1, &nfound);
}
if (*cmd == (struct cmd_list_element *) -1)
{
return 0; /* ambiguous */
}
if (*cmd == NULL)
return 0; /* nothing found */
else
{
if ((*cmd)->cmd_pointer)
{
/* cmd was actually an alias, we note that an alias was used
(by assigning *alais) and we set *cmd.
*/
*alias = *cmd;
*cmd = (*cmd)->cmd_pointer;
}
*prefix_cmd = prev_cmd;
}
if ((*cmd)->prefixlist)
cur_list = *(*cmd)->prefixlist;
else
return 1;
text = p;
}
}
#if 0
/* Look up the contents of *LINE as a command in the command list LIST.
LIST is a chain of struct cmd_list_element's.
If it is found, return the struct cmd_list_element for that command
and update *LINE to point after the command name, at the first argument.
If not found, call error if ALLOW_UNKNOWN is zero
otherwise (or if error returns) return zero.
Call error if specified command is ambiguous,
unless ALLOW_UNKNOWN is negative.
CMDTYPE precedes the word "command" in the error message. */
struct cmd_list_element *
lookup_cmd (line, list, cmdtype, allow_unknown)
char **line;
struct cmd_list_element *list;
char *cmdtype;
int allow_unknown;
{
register char *p;
register struct cmd_list_element *c, *found;
int nfound;
char ambbuf[100];
char *processed_cmd;
int i, cmd_len;
/* Skip leading whitespace. */
while (**line == ' ' || **line == '\t')
(*line)++;
/* Clear out trailing whitespace. */
p = *line + strlen (*line);
while (p != *line && (p[-1] == ' ' || p[-1] == '\t'))
p--;
*p = 0;
/* Find end of command name. */
p = *line;
while (*p == '-' || isalnum (*p))
p++;
/* Look up the command name.
If exact match, keep that.
Otherwise, take command abbreviated, if unique. Note that (in my
opinion) a null string does *not* indicate ambiguity; simply the
end of the argument. */
if (p == *line)
{
if (!allow_unknown)
error ("Lack of needed %scommand", cmdtype);
return 0;
}
/* Copy over to a local buffer, converting to lowercase on the way.
This is in case the command being parsed is a subcommand which
doesn't match anything, and that's ok. We want the original
untouched for the routine of the original command. */
processed_cmd = (char *) alloca (p - *line + 1);
for (cmd_len = 0; cmd_len < p - *line; cmd_len++)
{
char x = (*line)[cmd_len];
if (isupper (x))
processed_cmd[cmd_len] = tolower (x);
else
processed_cmd[cmd_len] = x;
}
processed_cmd[cmd_len] = '\0';
/* Check all possibilities in the current command list. */
found = 0;
nfound = 0;
for (c = list; c; c = c->next)
{
if (!strncmp (processed_cmd, c->name, cmd_len))
{
found = c;
nfound++;
if (c->name[cmd_len] == 0)
{
nfound = 1;
break;
}
}
}
/* Report error for undefined command name. */
if (nfound != 1)
{
if (nfound > 1 && allow_unknown >= 0)
{
ambbuf[0] = 0;
for (c = list; c; c = c->next)
if (!strncmp (processed_cmd, c->name, cmd_len))
{
if (strlen (ambbuf) + strlen (c->name) + 6 < sizeof ambbuf)
{
if (strlen (ambbuf))
strcat (ambbuf, ", ");
strcat (ambbuf, c->name);
}
else
{
strcat (ambbuf, "..");
break;
}
}
error ("Ambiguous %scommand \"%s\": %s.", cmdtype,
processed_cmd, ambbuf);
}
else if (!allow_unknown)
error ("Undefined %scommand: \"%s\".", cmdtype, processed_cmd);
return 0;
}
/* Skip whitespace before the argument. */
while (*p == ' ' || *p == '\t')
p++;
*line = p;
if (found->prefixlist && *p)
{
c = lookup_cmd (line, *found->prefixlist, found->prefixname,
found->allow_unknown);
if (c)
return c;
}
return found;
}
#endif
/* Helper function for SYMBOL_COMPLETION_FUNCTION. */
/* Return a vector of char pointers which point to the different
possible completions in LIST of TEXT.
WORD points in the same buffer as TEXT, and completions should be
returned relative to this position. For example, suppose TEXT is "foo"
and we want to complete to "foobar". If WORD is "oo", return
"oobar"; if WORD is "baz/foo", return "baz/foobar". */
char **
complete_on_cmdlist (list, text, word)
struct cmd_list_element *list;
char *text;
char *word;
{
struct cmd_list_element *ptr;
char **matchlist;
int sizeof_matchlist;
int matches;
int textlen = strlen (text);
sizeof_matchlist = 10;
matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *));
matches = 0;
for (ptr = list; ptr; ptr = ptr->next)
if (!strncmp (ptr->name, text, textlen)
&& !ptr->abbrev_flag
&& (ptr->function.cfunc
|| ptr->prefixlist))
{
if (matches == sizeof_matchlist)
{
sizeof_matchlist *= 2;
matchlist = (char **) xrealloc ((char *) matchlist,
(sizeof_matchlist
* sizeof (char *)));
}
matchlist[matches] = (char *)
xmalloc (strlen (word) + strlen (ptr->name) + 1);
if (word == text)
strcpy (matchlist[matches], ptr->name);
else if (word > text)
{
/* Return some portion of ptr->name. */
strcpy (matchlist[matches], ptr->name + (word - text));
}
else
{
/* Return some of text plus ptr->name. */
strncpy (matchlist[matches], word, text - word);
matchlist[matches][text - word] = '\0';
strcat (matchlist[matches], ptr->name);
}
++matches;
}
if (matches == 0)
{
free ((PTR) matchlist);
matchlist = 0;
}
else
{
matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1)
* sizeof (char *)));
matchlist[matches] = (char *) 0;
}
return matchlist;
}
/* Helper function for SYMBOL_COMPLETION_FUNCTION. */
/* Return a vector of char pointers which point to the different
possible completions in CMD of TEXT.
WORD points in the same buffer as TEXT, and completions should be
returned relative to this position. For example, suppose TEXT is "foo"
and we want to complete to "foobar". If WORD is "oo", return
"oobar"; if WORD is "baz/foo", return "baz/foobar". */
char **
complete_on_enum (const char *enumlist[],
char *text,
char *word)
{
char **matchlist;
int sizeof_matchlist;
int matches;
int textlen = strlen (text);
int i;
const char *name;
sizeof_matchlist = 10;
matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *));
matches = 0;
for (i = 0; (name = enumlist[i]) != NULL; i++)
if (strncmp (name, text, textlen) == 0)
{
if (matches == sizeof_matchlist)
{
sizeof_matchlist *= 2;
matchlist = (char **) xrealloc ((char *) matchlist,
(sizeof_matchlist
* sizeof (char *)));
}
matchlist[matches] = (char *)
xmalloc (strlen (word) + strlen (name) + 1);
if (word == text)
strcpy (matchlist[matches], name);
else if (word > text)
{
/* Return some portion of name. */
strcpy (matchlist[matches], name + (word - text));
}
else
{
/* Return some of text plus name. */
strncpy (matchlist[matches], word, text - word);
matchlist[matches][text - word] = '\0';
strcat (matchlist[matches], name);
}
++matches;
}
if (matches == 0)
{
free ((PTR) matchlist);
matchlist = 0;
}
else
{
matchlist = (char **) xrealloc ((char *) matchlist, ((matches + 1)
* sizeof (char *)));
matchlist[matches] = (char *) 0;
}
return matchlist;
}
static enum cmd_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 CMD_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 CMD_AUTO_BOOLEAN_FALSE;
else if (strncmp (arg, "auto", length) == 0
|| (strncmp (arg, "-1", length) == 0 && length > 1))
return CMD_AUTO_BOOLEAN_AUTO;
}
error ("\"on\", \"off\" or \"auto\" expected.");
return CMD_AUTO_BOOLEAN_AUTO; /* pacify GCC */
}
static int
parse_binary_operation (arg)
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;
}
}
/* 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 (arg, from_tty, c)
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)
free (*(char **) c->var);
*(char **) c->var = new;
}
break;
case var_string_noescape:
if (arg == NULL)
arg = "";
if (*(char **) c->var != NULL)
free (*(char **) c->var);
*(char **) c->var = savestring (arg, strlen (arg));
break;
case var_filename:
if (arg == NULL)
error_no_arg ("filename to set it to.");
if (*(char **) c->var != NULL)
free (*(char **) c->var);
*(char **) c->var = tilde_expand (arg);
break;
case var_boolean:
*(int *) c->var = parse_binary_operation (arg);
break;
case var_auto_boolean:
*(enum cmd_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_address (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_address (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_address (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[1024];
strcpy (msg, "Requires an argument. Valid arguments are ");
for (i = 0; c->enums[i]; i++)
{
if (i != 0)
strcat (msg, ", ");
strcat (msg, c->enums[i]);
}
strcat (msg, ".");
error (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)
{
#ifdef UI_OUT
struct cleanup *old_chain;
struct ui_stream *stb;
int quote;
stb = ui_out_stream_new (uiout);
old_chain = make_cleanup_ui_out_stream_delete (stb);
#endif /* UI_OUT */
/* Print doc minus "show" at start. */
print_doc_line (gdb_stdout, c->doc + 5);
#ifdef UI_OUT
ui_out_text (uiout, " is ");
ui_out_wrap_hint (uiout, " ");
quote = 0;
switch (c->var_type)
{
case var_string:
{
unsigned char *p;
if (*(unsigned char **) c->var)
fputstr_filtered (*(unsigned char **) c->var, '"', stb->stream);
quote = 1;
}
break;
case var_string_noescape:
case var_filename:
case var_enum:
if (*(char **) c->var)
fputs_filtered (*(char **) c->var, stb->stream);
quote = 1;
break;
case var_boolean:
fputs_filtered (*(int *) c->var ? "on" : "off", stb->stream);
break;
case var_auto_boolean:
switch (*(enum cmd_auto_boolean*) c->var)
{
case CMD_AUTO_BOOLEAN_TRUE:
fputs_filtered ("on", stb->stream);
break;
case CMD_AUTO_BOOLEAN_FALSE:
fputs_filtered ("off", stb->stream);
break;
case CMD_AUTO_BOOLEAN_AUTO:
fputs_filtered ("auto", stb->stream);
break;
default:
internal_error ("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_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");
}
if (quote)
ui_out_text (uiout, "\"");
ui_out_field_stream (uiout, "value", stb);
if (quote)
ui_out_text (uiout, "\"");
ui_out_text (uiout, ".\n");
do_cleanups (old_chain);
#else
fputs_filtered (" is ", gdb_stdout);
wrap_here (" ");
switch (c->var_type)
{
case var_string:
{
fputs_filtered ("\"", gdb_stdout);
if (*(unsigned char **) c->var)
fputstr_filtered (*(unsigned char **) c->var, '"', gdb_stdout);
fputs_filtered ("\"", gdb_stdout);
}
break;
case var_string_noescape:
case var_filename:
case var_enum:
fputs_filtered ("\"", gdb_stdout);
if (*(char **) c->var)
fputs_filtered (*(char **) c->var, gdb_stdout);
fputs_filtered ("\"", gdb_stdout);
break;
case var_boolean:
fputs_filtered (*(int *) c->var ? "on" : "off", gdb_stdout);
break;
case var_auto_boolean:
switch (*(enum cmd_auto_boolean*) c->var)
{
case CMD_AUTO_BOOLEAN_TRUE:
fputs_filtered ("on", gdb_stdout);
break;
case CMD_AUTO_BOOLEAN_FALSE:
fputs_filtered ("off", gdb_stdout);
break;
case CMD_AUTO_BOOLEAN_AUTO:
fputs_filtered ("auto", gdb_stdout);
break;
default:
internal_error ("do_setshow_command: invalid var_auto_boolean");
break;
}
break;
case var_uinteger:
if (*(unsigned int *) c->var == UINT_MAX)
{
fputs_filtered ("unlimited", gdb_stdout);
break;
}
/* else fall through */
case var_zinteger:
fprintf_filtered (gdb_stdout, "%u", *(unsigned int *) c->var);
break;
case var_integer:
if (*(int *) c->var == INT_MAX)
{
fputs_filtered ("unlimited", gdb_stdout);
}
else
fprintf_filtered (gdb_stdout, "%d", *(int *) c->var);
break;
default:
error ("gdb internal error: bad var_type in do_setshow_command");
}
fputs_filtered (".\n", gdb_stdout);
#endif
}
else
error ("gdb internal error: bad cmd_type in do_setshow_command");
(*c->function.sfunc) (NULL, from_tty, c);
if (c->type == set_cmd && set_hook)
set_hook (c);
}
/* Show all the settings in a list of show commands. */
void
cmd_show_list (list, from_tty, prefix)
struct cmd_list_element *list;
int from_tty;
char *prefix;
{
#ifdef UI_OUT
ui_out_list_begin (uiout, "showlist");
#endif
for (; list != NULL; list = list->next)
{
/* If we find a prefix, run its list, prefixing our output by its
prefix (with "show " skipped). */
#ifdef UI_OUT
if (list->prefixlist && !list->abbrev_flag)
{
ui_out_list_begin (uiout, "optionlist");
ui_out_field_string (uiout, "prefix", list->prefixname + 5);
cmd_show_list (*list->prefixlist, from_tty, list->prefixname + 5);
ui_out_list_end (uiout);
}
if (list->type == show_cmd)
{
ui_out_list_begin (uiout, "option");
ui_out_text (uiout, prefix);
ui_out_field_string (uiout, "name", list->name);
ui_out_text (uiout, ": ");
do_setshow_command ((char *) NULL, from_tty, list);
ui_out_list_end (uiout);
}
#else
if (list->prefixlist && !list->abbrev_flag)
cmd_show_list (*list->prefixlist, from_tty, list->prefixname + 5);
if (list->type == show_cmd)
{
fputs_filtered (prefix, gdb_stdout);
fputs_filtered (list->name, gdb_stdout);
fputs_filtered (": ", gdb_stdout);
do_setshow_command ((char *) NULL, from_tty, list);
}
#endif
}
#ifdef UI_OUT
ui_out_list_end (uiout);
#endif
}
/* ARGSUSED */
static void
shell_escape (arg, from_tty)
char *arg;
int from_tty;
{
#ifdef CANT_FORK
/* If ARG is NULL, they want an inferior shell, but `system' just
reports if the shell is available when passed a NULL arg. */
int rc = system (arg ? arg : "");
if (!arg)
arg = "inferior shell";
if (rc == -1)
{
fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", arg,
safe_strerror (errno));
gdb_flush (gdb_stderr);
}
else if (rc)
{
fprintf_unfiltered (gdb_stderr, "%s exited with status %d\n", arg, rc);
gdb_flush (gdb_stderr);
}
#ifdef __DJGPP__
/* Make sure to return to the directory GDB thinks it is, in case the
shell command we just ran changed it. */
chdir (current_directory);
#endif
#else /* Can fork. */
int rc, status, pid;
char *p, *user_shell;
if ((user_shell = (char *) getenv ("SHELL")) == NULL)
user_shell = "/bin/sh";
/* Get the name of the shell for arg0 */
if ((p = strrchr (user_shell, '/')) == NULL)
p = user_shell;
else
p++; /* Get past '/' */
if ((pid = fork ()) == 0)
{
if (!arg)
execl (user_shell, p, 0);
else
execl (user_shell, p, "-c", arg, 0);
fprintf_unfiltered (gdb_stderr, "Cannot execute %s: %s\n", user_shell,
safe_strerror (errno));
gdb_flush (gdb_stderr);
_exit (0177);
}
if (pid != -1)
while ((rc = wait (&status)) != pid && rc != -1)
;
else
error ("Fork failed");
#endif /* Can fork. */
}
static void
make_command (arg, from_tty)
char *arg;
int from_tty;
{
char *p;
if (arg == 0)
p = "make";
else
{
p = xmalloc (sizeof ("make ") + strlen (arg));
strcpy (p, "make ");
strcpy (p + sizeof ("make ") - 1, arg);
}
shell_escape (p, from_tty);
}
static void
show_user_1 (c, stream)
struct cmd_list_element *c;
struct ui_file *stream;
{
register struct command_line *cmdlines;
cmdlines = c->user_commands;
if (!cmdlines)
return;
fputs_filtered ("User command ", stream);
fputs_filtered (c->name, stream);
fputs_filtered (":\n", stream);
#ifdef UI_OUT
print_command_lines (uiout, cmdlines, 1);
fputs_filtered ("\n", stream);
#else
while (cmdlines)
{
print_command_line (cmdlines, 4, stream);
cmdlines = cmdlines->next;
}
fputs_filtered ("\n", stream);
#endif
}
/* ARGSUSED */
static void
show_user (args, from_tty)
char *args;
int from_tty;
{
struct cmd_list_element *c;
extern struct cmd_list_element *cmdlist;
if (args)
{
c = lookup_cmd (&args, cmdlist, "", 0, 1);
if (c->class != class_user)
error ("Not a user command.");
show_user_1 (c, gdb_stdout);
}
else
{
for (c = cmdlist; c; c = c->next)
{
if (c->class == class_user)
show_user_1 (c, gdb_stdout);
}
}
}
void
_initialize_command ()
{
add_com ("shell", class_support, shell_escape,
"Execute the rest of the line as a shell command. \n\
With no arguments, run an inferior shell.");
/* NOTE: cagney/2000-03-20: Being able to enter ``(gdb) !ls'' would
be a really useful feature. Unfortunatly, the below wont do
this. Instead it adds support for the form ``(gdb) ! ls''
(i.e. the space is required). If the ``!'' command below is
added the complains about no ``!'' command would be replaced by
complains about how the ``!'' command is broken :-) */
if (xdb_commands)
add_com_alias ("!", "shell", class_support, 0);
add_com ("make", class_support, make_command,
"Run the ``make'' program using the rest of the line as arguments.");
add_cmd ("user", no_class, show_user,
"Show definitions of user defined commands.\n\
Argument is the name of the user defined command.\n\
With no argument, show definitions of all user defined commands.", &showlist);
add_com ("apropos", class_support, apropos_command, "Search for commands matching a REGEXP");
}
Reference in New Issue View Git Blame Copy Permalink