-/* Library for reading command lines and decoding commands.
- Copyright (C) 1986 Free Software Foundation, Inc.
-
- NO WARRANTY
-
- BECAUSE THIS PROGRAM IS LICENSED FREE OF CHARGE, WE PROVIDE ABSOLUTELY
-NO WARRANTY, TO THE EXTENT PERMITTED BY APPLICABLE STATE LAW. EXCEPT
-WHEN OTHERWISE STATED IN WRITING, FREE SOFTWARE FOUNDATION, INC,
-RICHARD M. STALLMAN AND/OR OTHER PARTIES PROVIDE THIS PROGRAM "AS IS"
-WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
-BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
-FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY
-AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
-DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
-CORRECTION.
-
- IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW WILL RICHARD M.
-STALLMAN, THE FREE SOFTWARE FOUNDATION, INC., AND/OR ANY OTHER PARTY
-WHO MAY MODIFY AND REDISTRIBUTE THIS PROGRAM AS PERMITTED BELOW, BE
-LIABLE TO YOU FOR DAMAGES, INCLUDING ANY LOST PROFITS, LOST MONIES, OR
-OTHER SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
-USE OR INABILITY TO USE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR
-DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY THIRD PARTIES OR
-A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS) THIS
-PROGRAM, EVEN IF YOU HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
-DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY.
-
- GENERAL PUBLIC LICENSE TO COPY
-
- 1. You may copy and distribute verbatim copies of this source file
-as you receive it, in any medium, provided that you conspicuously and
-appropriately publish on each copy a valid copyright notice "Copyright
-(C) 1986 Free Software Foundation, Inc."; and include following the
-copyright notice a verbatim copy of the above disclaimer of warranty
-and of this License. You may charge a distribution fee for the
-physical act of transferring a copy.
-
- 2. You may modify your copy or copies of this source file or
-any portion of it, and copy and distribute such modifications under
-the terms of Paragraph 1 above, provided that you also do the following:
-
- a) cause the modified files to carry prominent notices stating
- that you changed the files and the date of any change; and
-
- b) cause the whole of any work that you distribute or publish,
- that in whole or in part contains or is a derivative of this
- program or any part thereof, to be licensed at no charge to all
- third parties on terms identical to those contained in this
- License Agreement (except that you may choose to grant more extensive
- warranty protection to some or all third parties, at your option).
-
- c) You may charge a distribution fee for the physical act of
- transferring a copy, and you may at your option offer warranty
- protection in exchange for a fee.
-
-Mere aggregation of another unrelated program with this program (or its
-derivative) on a volume of a storage or distribution medium does not bring
-the other program under the scope of these terms.
-
- 3. You may copy and distribute this program (or a portion or derivative
-of it, under Paragraph 2) in object code or executable form under the terms
-of Paragraphs 1 and 2 above provided that you also do one of the following:
-
- a) accompany it with the complete corresponding machine-readable
- source code, which must be distributed under the terms of
- Paragraphs 1 and 2 above; or,
-
- b) accompany it with a written offer, valid for at least three
- years, to give any third party free (except for a nominal
- shipping charge) a complete machine-readable copy of the
- corresponding source code, to be distributed under the terms of
- Paragraphs 1 and 2 above; or,
-
- c) accompany it with the information you received as to where the
- corresponding source code may be obtained. (This alternative is
- allowed only for noncommercial distribution and only if you
- received the program in object code or executable form alone.)
-
-For an executable file, complete source code means all the source code for
-all modules it contains; but, as a special exception, it need not include
-source code for modules which are standard libraries that accompany the
-operating system on which the executable file runs.
-
- 4. You may not copy, sublicense, distribute or transfer this program
-except as expressly provided under this License Agreement. Any attempt
-otherwise to copy, sublicense, distribute or transfer this program is void and
-your rights to use the program under this License agreement shall be
-automatically terminated. However, parties who have received computer
-software programs from you with this License Agreement will not have
-their licenses terminated so long as such parties remain in full compliance.
-
- 5. If you wish to incorporate parts of this program into other free
-programs whose distribution conditions are different, write to the Free
-Software Foundation at 675 Mass Ave, Cambridge, MA 02139. We have not yet
-worked out a simple rule that can be stated here, but we will often permit
-this. We will be guided by the two goals of preserving the free status of
-all derivatives of our free software and of promoting the sharing and reuse of
-software.
-
-
-In other words, you are welcome to use, share and improve this program.
-You are forbidden to forbid anyone else to use, share and improve
-what you give them. Help stamp out software-hoarding! */
-
-
-#include "command.h"
-#include <stdio.h>
-
-extern char *xmalloc ();
-
-static char *savestring ();
-
-/* Add element named NAME to command list *LIST.
+/* 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. */
+ 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;
- int class;
- void (*fun) ();
- char *doc;
- struct cmd_list_element **list;
+add_cmd (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 *) xmalloc (sizeof (struct cmd_list_element));
+ struct cmd_list_element *p;
delete_cmd (name, list);
- c->next = *list;
- c->name = savestring (name, strlen (name));
+
+ 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 = fun;
+ c->function.cfunc = fun;
c->doc = doc;
- c->prefixlist = 0;
+ c->flags = 0;
+ c->replacement = NULL;
+ c->hook = NULL;
+ c->prefixlist = NULL;
+ c->prefixname = NULL;
c->allow_unknown = 0;
c->abbrev_flag = 0;
- c->aux = 0;
- *list = c;
+ 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 (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 (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;
- int class;
- int abbrev_flag;
- struct cmd_list_element **list;
+add_alias_cmd (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 *c;
copied_name = (char *) alloca (strlen (oldname) + 1);
strcpy (copied_name, oldname);
- old = lookup_cmd (&copied_name, *list, 0, 1);
+ old = lookup_cmd (&copied_name, *list, "", 1, 1);
if (old == 0)
{
return 0;
}
- c = add_cmd (name, class, old->function, old->doc, list);
+ 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->aux = old->aux;
+ c->cmd_pointer = old;
return c;
}
-/* Like add_prefix_cmd but adds an element for a command prefix:
+/* 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;
- int class;
- void (*fun) ();
- char *doc;
- struct cmd_list_element **prefixlist;
- char *prefixname;
- int allow_unknown;
- struct cmd_list_element **list;
+add_prefix_cmd (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;
return c;
}
+/* Like add_prefix_cmd but sets the abbrev_flag on the new command. */
+
+struct cmd_list_element *
+add_abbrev_prefix_cmd (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 (char *args, int from_tty)
+{
+}
+
+/* This is an empty "sfunc". */
+static void empty_sfunc (char *, int, struct cmd_list_element *);
+
+static void
+empty_sfunc (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 (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;
+delete_cmd (char *name, struct cmd_list_element **list)
{
register struct cmd_list_element *c;
+ struct cmd_list_element *p;
- while (*list && !strcmp ((*list)->name, name))
+ while (*list && STREQ ((*list)->name, name))
{
- *list = (*list)->next;
+ 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 (!strcmp (c->next->name, name))
- c->next = c->next->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);
+}
-/* Implement a help command on command list LIST.
- COMMAND is the argument given (a command from the list to document)
- or zero for no arg (describe briefly all the commands in the list).
- CMDTYPE is a string to use in the error message if command COMMAND
- is not found in the list. */
-/* CLASS should be -1 to list all commands in LIST,
- or a nonnegative class number value to list just commands in that class,
- or -2 to list the classes themselves. */
+/* 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, list, cmdtype, class, stream)
- char *command;
- struct cmd_list_element *list;
- char *cmdtype;
- int class;
- FILE *stream;
+help_cmd (char *command, struct ui_file *stream)
{
- register struct cmd_list_element *c;
- register char *p;
- register int ncmds;
- struct cmdvec { struct cmd_list_element *cmd; int class; };
- register struct cmdvec *cmdvec;
- char *cmdtype1, *cmdtype2;
- int len;
+ struct cmd_list_element *c;
+ extern struct cmd_list_element *cmdlist;
- if (command)
+ if (!command)
{
- c = lookup_cmd (&command, list, cmdtype, 0);
- if (c == 0)
- return;
+ help_list (cmdlist, "", all_classes, stream);
+ return;
+ }
- /* There are three cases here.
- If c->prefixlist is nonzer, we have a prefix command.
- Print its documentation, then list its subcommands.
+ if (strcmp (command, "all") == 0)
+ {
+ help_all (stream);
+ return;
+ }
- If c->function is nonzero, we really have a command.
- Print its documentation and return.
+ c = lookup_cmd (&command, cmdlist, "", 0, 0);
- If c->function is zero, we have a class name.
- Print its documentation (as if it were a command)
- and then set class to he number of this class
- so that the commands in the class will be listed. */
+ if (c == 0)
+ return;
- p = c->doc;
- fprintf (stream, "%s\n", p);
- if (c->function != 0 && c->prefixlist == 0)
- return;
- fputc ('\n', stream);
- if (c->prefixlist)
- {
- list = *c->prefixlist;
- class = 0;
- cmdtype = c->prefixname;
- }
- else
- class = c->class;
- }
+ /* 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 (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);
strcpy (cmdtype2 + len - 1, " sub");
}
- if (class == -2)
- fprintf (stream, "List of classes of %scommands:\n\n", cmdtype2);
+ if (class == all_classes)
+ fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2);
else
- fprintf (stream, "List of %scommands:\n\n", cmdtype2);
+ 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 (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 (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 == -1 /* Listing all */
- || (c->class == class && c->function != 0) /* Listing one class */
- || (class == -2 && c->function == 0))) /* Listing the classes */
+ if (c->abbrev_flag == 0 &&
+ (class == all_commands
+ || (class == all_classes && c->function.cfunc == NULL)
+ || (class == c->class && c->function.cfunc != NULL)))
{
- fprintf (stream, "%s -- ", c->name);
- /* Print just first line of documentation. */
- p = c->doc;
- while (*p && *p != '\n') p++;
- fwrite (c->doc, 1, p - c->doc, stream);
- fputc ('\n', stream);
+ 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);
}
+}
+\f
- if (class == -2)
- fprintf (stream, "\n\
-Type \"help%s\" followed by a class name for a list of commands in that class.",
- cmdtype1);
+/* Search the input clist for 'command'. Return the command if
+ found (or NULL if not), and return the number of commands
+ found in nfound */
- fprintf (stream, "\n\
-Type \"help%s\" followed by %scommand name for full documentation.\n\
-Command name abbreviations are allowed if unambiguous.\n",
- cmdtype1, cmdtype2);
+static struct cmd_list_element *
+find_cmd (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;
}
-\f
+
+/* 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 (char **text, struct cmd_list_element *clist,
+ struct cmd_list_element **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 (char *cmdtype, char *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 (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
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;
+lookup_cmd (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. */
/* Find end of command name. */
p = *line;
- while (*p == '-'
- || (*p >= 'a' && *p <= 'z')
- || (*p >= 'A' && *p <= 'Z')
- || (*p >= '1' && *p <= '9'))
- {
- if (*p >= 'A' && *p <= 'Z')
- *p += 'a' - 'A';
- p++;
- }
+ while (*p == '-' || isalnum (*p))
+ p++;
/* Look up the command name.
If exact match, keep that.
- Otherwise, take command abbreviated, if unique. */
+ 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 (*line, c->name, p - *line))
+ if (!strncmp (processed_cmd, c->name, cmd_len))
{
found = c;
nfound++;
- if (c->name[p - *line] == 0)
+ if (c->name[cmd_len] == 0)
{
nfound = 1;
break;
{
if (nfound > 1 && allow_unknown >= 0)
{
- *p = 0;
ambbuf[0] = 0;
for (c = list; c; c = c->next)
- if (!strncmp (*line, c->name, p - *line))
+ if (!strncmp (processed_cmd, c->name, cmd_len))
{
if (strlen (ambbuf) + strlen (c->name) + 6 < sizeof ambbuf)
{
break;
}
}
- error ("Ambiguous %scommand \"%s\": %s.", cmdtype, *line, ambbuf);
+ error ("Ambiguous %scommand \"%s\": %s.", cmdtype,
+ processed_cmd, ambbuf);
}
else if (!allow_unknown)
- {
- *p = 0;
- error ("Undefined %scommand: \"%s\".", cmdtype, *line);
- }
+ error ("Undefined %scommand: \"%s\".", cmdtype, processed_cmd);
return 0;
}
/* Skip whitespace before the argument. */
- while (*p == ' ' || *p == '\t') p++;
+ while (*p == ' ' || *p == '\t')
+ p++;
*line = p;
if (found->prefixlist && *p)
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 (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 (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 (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 (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 (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 (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 (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
+}
-/* Make a copy of the string at PTR with SIZE characters
- (and add a null character at the end in the copy).
- Uses malloc to get the space. Returns the address of the copy. */
+/* ARGSUSED */
+static void
+show_user (char *args, int from_tty)
+{
+ struct cmd_list_element *c;
+ extern struct cmd_list_element *cmdlist;
-static char *
-savestring (ptr, size)
- char *ptr;
- int size;
+ 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 (void)
{
- register char *p = (char *) xmalloc (size + 1);
- bcopy (ptr, p, size);
- p[size] = 0;
- return p;
+ 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");
}
projects / deliverable / binutils-gdb.git / blobdiff