-/* 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 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.
-
- 3. You may copy and distribute this program or any portion of it in
-compiled, executable or object code form under the terms of Paragraphs
-1 and 2 above provided that you do the following:
-
- a) cause each such copy to be accompanied by the
- corresponding machine-readable source code, which must
- be distributed under the terms of Paragraphs 1 and 2 above; or,
-
- b) cause each such copy to be accompanied by a
- written offer, with no time limit, to give any third party
- free (except for a nominal shipping charge) a machine readable
- copy of the corresponding source code, to be distributed
- under the terms of Paragraphs 1 and 2 above; or,
-
- c) in the case of a recipient of this program in compiled, executable
- or object code form (without the corresponding source code) you
- shall cause copies you distribute to be accompanied by a copy
- of the written offer of source code which you received along
- with the copy you received.
-
- 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 ();
+/* Handle lists of commands, their decoding and documentation, for GDB.
+ Copyright 1986, 1989, 1990, 1991 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "defs.h"
+#include "gdbcmd.h"
+#include "symtab.h"
+#include "value.h"
+#include <ctype.h>
+#include <string.h>
+
+/* Prototypes for local functions */
+
+static void
+undef_cmd_error PARAMS ((char *, char *));
+
+static void
+show_user PARAMS ((char *, int));
+
+static void
+show_user_1 PARAMS ((struct cmd_list_element *, FILE *));
+
+static void
+make_command PARAMS ((char *, int));
+
+static void
+shell_escape PARAMS ((char *, int));
+
+static int
+parse_binary_operation PARAMS ((char *));
+
+static void
+print_doc_line PARAMS ((FILE *, char *));
/* Add element named NAME to command list *LIST.
FUN should be the function to execute the command;
struct cmd_list_element *
add_cmd (name, class, fun, doc, list)
char *name;
- int class;
- void (*fun) ();
+ enum command_class class;
+ void (*fun) PARAMS ((char *, int));
char *doc;
struct cmd_list_element **list;
{
delete_cmd (name, list);
c->next = *list;
- c->name = savestring (name, strlen (name));
+ c->name = name;
c->class = class;
- c->function = fun;
+ c->function.cfunc = fun;
c->doc = doc;
c->prefixlist = 0;
+ c->prefixname = (char *)NULL;
c->allow_unknown = 0;
+ c->hook = 0;
+ c->hookee = 0;
+ c->cmd_pointer = 0;
c->abbrev_flag = 0;
- c->aux = 0;
+ c->type = not_set_cmd;
+ c->completer = make_symbol_completion_list;
+ c->var = 0;
+ c->var_type = var_boolean;
+ c->user_commands = 0;
*list = c;
return c;
}
+/* Same as above, except that the abbrev_flag is set. */
+
+#if 0 /* Currently unused */
+
+struct cmd_list_element *
+add_abbrev_cmd (name, class, fun, doc, list)
+ char *name;
+ enum command_class class;
+ void (*fun) PARAMS ((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;
+ enum command_class class;
int abbrev_flag;
struct cmd_list_element **list;
{
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. */
add_prefix_cmd (name, class, fun, doc, prefixlist, prefixname,
allow_unknown, list)
char *name;
- int class;
- void (*fun) ();
+ enum command_class class;
+ void (*fun) PARAMS ((char *, int));
char *doc;
struct cmd_list_element **prefixlist;
char *prefixname;
return c;
}
+/* Like add_prefix_cmd but sets the abbrev_flag on the new command. */
+
+struct cmd_list_element *
+add_abbrev_prefix_cmd (name, class, fun, doc, prefixlist, prefixname,
+ allow_unknown, list)
+ char *name;
+ enum command_class class;
+ void (*fun) PARAMS ((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;
+}
+
+/* ARGSUSED */
+void
+not_just_help_class_command (args, from_tty)
+ char *args;
+ int from_tty;
+{
+}
+
+/* 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 (name, class, var_type, var, doc, list)
+ char *name;
+ enum command_class class;
+ var_types var_type;
+ char *var;
+ char *doc;
+ struct cmd_list_element **list;
+{
+ /* For set/show, we have to call do_setshow_command
+ differently than an ordinary function (take commandlist as
+ well as arg), so the function field isn't helpful. However,
+ function == NULL means that it's a help class, so set the function
+ to not_just_help_class_command. */
+ struct cmd_list_element *c
+ = add_cmd (name, class, not_just_help_class_command, doc, list);
+
+ c->type = set_cmd;
+ c->var_type = var_type;
+ c->var = var;
+ return c;
+}
+
+/* Where SETCMD has already been added, add the corresponding show
+ command to LIST and return a pointer to it. */
+struct cmd_list_element *
+add_show_from_set (setcmd, list)
+ struct cmd_list_element *setcmd;
+ struct cmd_list_element **list;
+{
+ struct cmd_list_element *showcmd =
+ (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element));
+
+ 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 (stderr, "GDB internal error: Bad docstring for set command\n");
+
+ showcmd->next = *list;
+ *list = showcmd;
+ return showcmd;
+}
+
/* Remove the command named NAME from the command list. */
void
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;
}
}
-/* 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)
+help_cmd (command, stream)
char *command;
- struct cmd_list_element *list;
- char *cmdtype;
- int class;
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;
-
- /* There are three cases here.
- If c->prefixlist is nonzer, 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 he number of this class
- so that the commands in the class will be listed. */
-
- 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;
+ 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;
+ 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);
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);
- 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 */
- {
- 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);
- }
- }
+ help_cmd_list (list, class, cmdtype, (int)class >= 0, stream);
- if (class == -2)
- fprintf (stream, "\n\
+ 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 (stream, "\n\
+ 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)
+ 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]);
+ fputs_filtered (line_buffer, stream);
+}
+
+/*
+ * 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;
+ 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);
+ }
+}
\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.
+
+ 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 == '_');
+ 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,
+ converting to lower case as we go. */
+
+ command = (char *) alloca (len + 1);
+ for (tmp = 0; tmp < len; tmp++)
+ {
+ char x = (*text)[tmp];
+ command[tmp] = isupper(x) ? tolower(x) : x;
+ }
+ command[len] = '\0';
+
+ /* Look it up. */
+ found = 0;
+ 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;
+ }
+ }
+
+ /* 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 properley, 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);
+ char *ptr = (*line) + strlen (*line) - 1;
+
+ /* Clear off trailing whitespace. */
+ while (ptr >= *line && (*ptr == ' ' || *ptr == '\t'))
+ ptr--;
+ *(ptr + 1) = '\0';
+
+ 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
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;
}
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. */
+
+char **
+complete_on_cmdlist (list, text)
+ struct cmd_list_element *list;
+ char *text;
+{
+ 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 (ptr->name) + 1);
+ strcpy (matchlist[matches++], ptr->name);
+ }
+
+ 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);
-/* 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. */
+ while (arg[length - 1] == ' ' || arg[length - 1] == '\t')
+ length--;
-static char *
-savestring (ptr, size)
- char *ptr;
- int size;
+ 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. */
+ if (*p == 0)
+ break;
+ ch = parse_escape (&p);
+ if (ch == 0)
+ break; /* C loses */
+ else if (ch > 0)
+ *q++ = ch;
+ }
+ else
+ *q++ = ch;
+ }
+ if (*(p - 1) != '\\')
+ *q++ = ' ';
+ *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.");
+ *(int *) c->var = parse_and_eval_address (arg);
+ if (*(int *) c->var == 0)
+ *(int *) c->var = UINT_MAX;
+ break;
+ case var_zinteger:
+ if (arg == NULL)
+ error_no_arg ("integer to set it to.");
+ *(int *) c->var = parse_and_eval_address (arg);
+ break;
+ default:
+ error ("gdb internal error: bad var_type in do_setshow_command");
+ }
+ }
+ else if (c->type == show_cmd)
+ {
+ /* Print doc minus "show" at start. */
+ print_doc_line (stdout, c->doc + 5);
+
+ fputs_filtered (" is ", stdout);
+ wrap_here (" ");
+ switch (c->var_type)
+ {
+ case var_string:
+ {
+ unsigned char *p;
+ fputs_filtered ("\"", stdout);
+ for (p = *(unsigned char **) c->var; *p != '\0'; p++)
+ gdb_printchar (*p, stdout, '"');
+ fputs_filtered ("\"", stdout);
+ }
+ break;
+ case var_string_noescape:
+ case var_filename:
+ fputs_filtered ("\"", stdout);
+ fputs_filtered (*(char **) c->var, stdout);
+ fputs_filtered ("\"", stdout);
+ break;
+ case var_boolean:
+ fputs_filtered (*(int *) c->var ? "on" : "off", stdout);
+ break;
+ case var_uinteger:
+ if (*(unsigned int *) c->var == UINT_MAX) {
+ fputs_filtered ("unlimited", stdout);
+ break;
+ }
+ /* else fall through */
+ case var_zinteger:
+ fprintf_filtered (stdout, "%d", *(unsigned int *) c->var);
+ break;
+ default:
+ error ("gdb internal error: bad var_type in do_setshow_command");
+ }
+ fputs_filtered (".\n", stdout);
+ }
+ else
+ error ("gdb internal error: bad cmd_type in do_setshow_command");
+ (*c->function.sfunc) (NULL, from_tty, 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;
+{
+ for (; list != NULL; list = list->next) {
+ /* If we find a prefix, run its list, prefixing our output by its
+ prefix (with "show " skipped). */
+ if (list->prefixlist && !list->abbrev_flag)
+ cmd_show_list (*list->prefixlist, from_tty, list->prefixname + 5);
+ if (list->type == show_cmd)
+ {
+ fputs_filtered (prefix, stdout);
+ fputs_filtered (list->name, stdout);
+ fputs_filtered (": ", stdout);
+ do_setshow_command ((char *)NULL, from_tty, list);
+ }
+ }
+}
+
+#ifndef CANT_FORK
+/* ARGSUSED */
+static void
+shell_escape (arg, from_tty)
+ char *arg;
+ int from_tty;
+{
+ 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 (stderr, "Exec of shell failed\n");
+ exit (0);
+ }
+
+ if (pid != -1)
+ while ((rc = wait (&status)) != pid && rc != -1)
+ ;
+ else
+ error ("Fork failed");
+}
+#endif
+
+#ifndef CANT_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);
+}
+#endif
+
+static void
+show_user_1 (c, stream)
+ struct cmd_list_element *c;
+ FILE *stream;
+{
+ register struct command_line *cmdlines;
+
+ cmdlines = c->user_commands;
+ if (!cmdlines)
+ return;
+ fprintf_filtered (stream, "User command %s:\n", c->name);
+ while (cmdlines)
+ {
+ fprintf_filtered (stream, "%s\n", cmdlines->line);
+ cmdlines = cmdlines->next;
+ }
+ fputs_filtered ("\n", stream);
+}
+
+/* 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, stdout);
+ }
+ else
+ {
+ for (c = cmdlist; c; c = c->next)
+ {
+ if (c->class == class_user)
+ show_user_1 (c, stdout);
+ }
+ }
+}
+
+void
+_initialize_command ()
{
- register char *p = (char *) xmalloc (size + 1);
- bcopy (ptr, p, size);
- p[size] = 0;
- return p;
+#ifndef CANT_FORK
+ 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.");
+#endif
+#ifndef CANT_FORK
+ add_com ("make", class_support, make_command,
+ "Run the ``make'' program using the rest of the line as arguments.");
+#endif
+ 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);
}
projects / deliverable / binutils-gdb.git / blobdiff