1782 lines
46 KiB
C
1782 lines
46 KiB
C
/* Handle lists of commands, their decoding and documentation, for GDB.
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Copyright 1986, 1989, 1990, 1991, 1998, 2000 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "defs.h"
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#include "gdbcmd.h"
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#include "symtab.h"
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#include "value.h"
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#include <ctype.h>
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#include "gdb_string.h"
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#ifdef UI_OUT
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#include "ui-out.h"
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#endif
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#include "gdb_wait.h"
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#include "gnu-regex.h"
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/* FIXME: this should be auto-configured! */
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#ifdef __MSDOS__
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# define CANT_FORK
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#endif
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/* Prototypes for local functions */
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static void undef_cmd_error PARAMS ((char *, char *));
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static void show_user PARAMS ((char *, int));
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static void show_user_1 (struct cmd_list_element *, struct ui_file *);
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static void make_command PARAMS ((char *, int));
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static void shell_escape PARAMS ((char *, int));
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static int parse_binary_operation PARAMS ((char *));
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static void print_doc_line (struct ui_file *, char *);
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static struct cmd_list_element *find_cmd PARAMS ((char *command,
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int len,
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struct cmd_list_element * clist,
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int ignore_help_classes,
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int *nfound));
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static void apropos_cmd_helper (struct ui_file *, struct cmd_list_element *,
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struct re_pattern_buffer *, char *);
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void apropos_command (char *, int);
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void _initialize_command PARAMS ((void));
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/* Add element named NAME.
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CLASS is the top level category into which commands are broken down
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for "help" purposes.
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FUN should be the function to execute the command;
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it will get a character string as argument, with leading
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and trailing blanks already eliminated.
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DOC is a documentation string for the command.
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Its first line should be a complete sentence.
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It should start with ? for a command that is an abbreviation
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or with * for a command that most users don't need to know about.
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Add this command to command list *LIST.
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Returns a pointer to the added command (not necessarily the head
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of *LIST). */
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struct cmd_list_element *
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add_cmd (name, class, fun, doc, list)
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char *name;
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enum command_class class;
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void (*fun) PARAMS ((char *, int));
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char *doc;
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struct cmd_list_element **list;
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{
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register struct cmd_list_element *c
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= (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element));
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struct cmd_list_element *p;
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delete_cmd (name, list);
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if (*list == NULL || STRCMP ((*list)->name, name) >= 0)
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{
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c->next = *list;
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*list = c;
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}
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else
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{
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p = *list;
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while (p->next && STRCMP (p->next->name, name) <= 0)
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{
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p = p->next;
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}
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c->next = p->next;
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p->next = c;
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}
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c->name = name;
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c->class = class;
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c->function.cfunc = fun;
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c->doc = doc;
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c->hook = NULL;
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c->prefixlist = NULL;
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c->prefixname = NULL;
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c->allow_unknown = 0;
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c->abbrev_flag = 0;
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c->completer = make_symbol_completion_list;
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c->type = not_set_cmd;
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c->var = NULL;
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c->var_type = var_boolean;
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c->enums = NULL;
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c->user_commands = NULL;
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c->hookee = NULL;
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c->cmd_pointer = NULL;
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return c;
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}
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/* Same as above, except that the abbrev_flag is set. */
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#if 0 /* Currently unused */
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struct cmd_list_element *
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add_abbrev_cmd (name, class, fun, doc, list)
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char *name;
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enum command_class class;
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void (*fun) PARAMS ((char *, int));
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char *doc;
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struct cmd_list_element **list;
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{
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register struct cmd_list_element *c
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= add_cmd (name, class, fun, doc, list);
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c->abbrev_flag = 1;
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return c;
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}
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#endif
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struct cmd_list_element *
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add_alias_cmd (name, oldname, class, abbrev_flag, list)
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char *name;
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char *oldname;
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enum command_class class;
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int abbrev_flag;
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struct cmd_list_element **list;
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{
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/* Must do this since lookup_cmd tries to side-effect its first arg */
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char *copied_name;
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register struct cmd_list_element *old;
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register struct cmd_list_element *c;
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copied_name = (char *) alloca (strlen (oldname) + 1);
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strcpy (copied_name, oldname);
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old = lookup_cmd (&copied_name, *list, "", 1, 1);
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if (old == 0)
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{
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delete_cmd (name, list);
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return 0;
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}
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c = add_cmd (name, class, old->function.cfunc, old->doc, list);
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c->prefixlist = old->prefixlist;
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c->prefixname = old->prefixname;
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c->allow_unknown = old->allow_unknown;
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c->abbrev_flag = abbrev_flag;
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c->cmd_pointer = old;
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return c;
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}
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/* Like add_cmd but adds an element for a command prefix:
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a name that should be followed by a subcommand to be looked up
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in another command list. PREFIXLIST should be the address
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of the variable containing that list. */
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struct cmd_list_element *
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add_prefix_cmd (name, class, fun, doc, prefixlist, prefixname,
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allow_unknown, list)
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char *name;
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enum command_class class;
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void (*fun) PARAMS ((char *, int));
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char *doc;
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struct cmd_list_element **prefixlist;
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char *prefixname;
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int allow_unknown;
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struct cmd_list_element **list;
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{
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register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list);
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c->prefixlist = prefixlist;
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c->prefixname = prefixname;
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c->allow_unknown = allow_unknown;
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return c;
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}
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/* Like add_prefix_cmd but sets the abbrev_flag on the new command. */
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struct cmd_list_element *
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add_abbrev_prefix_cmd (name, class, fun, doc, prefixlist, prefixname,
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allow_unknown, list)
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char *name;
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enum command_class class;
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void (*fun) PARAMS ((char *, int));
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char *doc;
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struct cmd_list_element **prefixlist;
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char *prefixname;
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int allow_unknown;
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struct cmd_list_element **list;
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{
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register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list);
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c->prefixlist = prefixlist;
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c->prefixname = prefixname;
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c->allow_unknown = allow_unknown;
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c->abbrev_flag = 1;
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return c;
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}
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/* This is an empty "cfunc". */
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void
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not_just_help_class_command (args, from_tty)
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char *args;
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int from_tty;
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{
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}
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/* This is an empty "sfunc". */
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static void empty_sfunc PARAMS ((char *, int, struct cmd_list_element *));
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static void
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empty_sfunc (args, from_tty, c)
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char *args;
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int from_tty;
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struct cmd_list_element *c;
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{
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}
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/* Add element named NAME to command list LIST (the list for set
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or some sublist thereof).
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CLASS is as in add_cmd.
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VAR_TYPE is the kind of thing we are setting.
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VAR is address of the variable being controlled by this command.
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DOC is the documentation string. */
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struct cmd_list_element *
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add_set_cmd (name, class, var_type, var, doc, list)
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char *name;
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enum command_class class;
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var_types var_type;
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char *var;
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char *doc;
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struct cmd_list_element **list;
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{
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struct cmd_list_element *c
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= add_cmd (name, class, NO_FUNCTION, doc, list);
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c->type = set_cmd;
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c->var_type = var_type;
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c->var = var;
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/* This needs to be something besides NO_FUNCTION so that this isn't
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treated as a help class. */
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c->function.sfunc = empty_sfunc;
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return c;
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}
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/* Add element named NAME to command list LIST (the list for set
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or some sublist thereof).
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CLASS is as in add_cmd.
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ENUMLIST is a list of strings which may follow NAME.
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VAR is address of the variable which will contain the matching string
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(from ENUMLIST).
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DOC is the documentation string. */
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struct cmd_list_element *
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add_set_enum_cmd (name, class, enumlist, var, doc, list)
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char *name;
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enum command_class class;
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char *enumlist[];
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char *var;
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char *doc;
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struct cmd_list_element **list;
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{
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struct cmd_list_element *c
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= add_set_cmd (name, class, var_enum, var, doc, list);
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c->enums = enumlist;
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return c;
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}
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/* Where SETCMD has already been added, add the corresponding show
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command to LIST and return a pointer to the added command (not
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necessarily the head of LIST). */
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struct cmd_list_element *
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add_show_from_set (setcmd, list)
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struct cmd_list_element *setcmd;
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struct cmd_list_element **list;
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{
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struct cmd_list_element *showcmd =
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(struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element));
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struct cmd_list_element *p;
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memcpy (showcmd, setcmd, sizeof (struct cmd_list_element));
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delete_cmd (showcmd->name, list);
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showcmd->type = show_cmd;
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/* Replace "set " at start of docstring with "show ". */
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if (setcmd->doc[0] == 'S' && setcmd->doc[1] == 'e'
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&& setcmd->doc[2] == 't' && setcmd->doc[3] == ' ')
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showcmd->doc = concat ("Show ", setcmd->doc + 4, NULL);
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else
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fprintf_unfiltered (gdb_stderr, "GDB internal error: Bad docstring for set command\n");
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if (*list == NULL || STRCMP ((*list)->name, showcmd->name) >= 0)
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{
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showcmd->next = *list;
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*list = showcmd;
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}
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else
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{
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p = *list;
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while (p->next && STRCMP (p->next->name, showcmd->name) <= 0)
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{
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p = p->next;
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}
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showcmd->next = p->next;
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p->next = showcmd;
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}
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return showcmd;
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}
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/* Remove the command named NAME from the command list. */
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void
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delete_cmd (name, list)
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char *name;
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struct cmd_list_element **list;
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{
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register struct cmd_list_element *c;
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struct cmd_list_element *p;
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while (*list && STREQ ((*list)->name, name))
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{
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if ((*list)->hookee)
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(*list)->hookee->hook = 0; /* Hook slips out of its mouth */
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p = (*list)->next;
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free ((PTR) * list);
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*list = p;
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}
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if (*list)
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for (c = *list; c->next;)
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{
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if (STREQ (c->next->name, name))
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{
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if (c->next->hookee)
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c->next->hookee->hook = 0; /* hooked cmd gets away. */
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p = c->next->next;
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free ((PTR) c->next);
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c->next = p;
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}
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else
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c = c->next;
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}
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}
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/* Recursively walk the commandlist structures, and print out the
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documentation of commands that match our regex in either their
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name, or their documentation.
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*/
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static void
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apropos_cmd_helper (struct ui_file *stream, struct cmd_list_element *commandlist,
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struct re_pattern_buffer *regex, char *prefix)
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{
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register struct cmd_list_element *c;
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int returnvalue=1; /*Needed to avoid double printing*/
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/* Walk through the commands */
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for (c=commandlist;c;c=c->next)
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{
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if (c->name != NULL)
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{
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/* Try to match against the name*/
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returnvalue=re_search(regex,c->name,strlen(c->name),0,strlen(c->name),NULL);
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if (returnvalue >= 0)
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{
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/* Stolen from help_cmd_list. We don't directly use
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* help_cmd_list because it doesn't let us print out
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* single commands
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*/
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fprintf_filtered (stream, "%s%s -- ", prefix, c->name);
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print_doc_line (stream, c->doc);
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fputs_filtered ("\n", stream);
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returnvalue=0; /*Set this so we don't print it again.*/
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}
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}
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if (c->doc != NULL && returnvalue != 0)
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{
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/* Try to match against documentation */
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if (re_search(regex,c->doc,strlen(c->doc),0,strlen(c->doc),NULL) >=0)
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{
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/* Stolen from help_cmd_list. We don't directly use
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* help_cmd_list because it doesn't let us print out
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* single commands
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*/
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fprintf_filtered (stream, "%s%s -- ", prefix, c->name);
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print_doc_line (stream, c->doc);
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fputs_filtered ("\n", stream);
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}
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}
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/* Check if this command has subcommands */
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if (c->prefixlist != NULL)
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{
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/* Recursively call ourselves on the subcommand list,
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passing the right prefix in.
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*/
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apropos_cmd_helper(stream,*c->prefixlist,regex,c->prefixname);
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||
}
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}
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||
}
|
||
/* Search through names of commands and documentations for a certain
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regular expression.
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||
*/
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void
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||
apropos_command (char *searchstr, int from_tty)
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||
{
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||
extern struct cmd_list_element *cmdlist; /*This is the main command list*/
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||
regex_t pattern;
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||
char *pattern_fastmap;
|
||
char errorbuffer[512];
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||
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;
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||
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;
|
||
}
|
||
|
||
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);
|
||
}
|
||
|
||
/* 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;
|
||
|
||
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 this was an abbreviation, use the base command instead. */
|
||
|
||
if (found->cmd_pointer)
|
||
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;
|
||
}
|
||
|
||
#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 (enumlist, text, word)
|
||
char **enumlist;
|
||
char *text;
|
||
char *word;
|
||
{
|
||
char **matchlist;
|
||
int sizeof_matchlist;
|
||
int matches;
|
||
int textlen = strlen (text);
|
||
int i;
|
||
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 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)
|
||
|| !strncmp (arg, "1", length)
|
||
|| !strncmp (arg, "yes", length))
|
||
return 1;
|
||
else if (!strncmp (arg, "off", length)
|
||
|| !strncmp (arg, "0", length)
|
||
|| !strncmp (arg, "no", length))
|
||
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_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;
|
||
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)
|
||
{
|
||
match = c->enums[i];
|
||
nmatches++;
|
||
}
|
||
|
||
if (nmatches <= 0)
|
||
error ("Undefined item: \"%s\".", arg);
|
||
|
||
if (nmatches > 1)
|
||
error ("Ambiguous item \"%s\".", arg);
|
||
|
||
*(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 ((make_cleanup_func) 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_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_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");
|
||
}
|