1 /* Library for reading command lines and decoding commands.
2 Copyright (C) 1986, 1989, 1990 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
27 extern char *getenv ();
29 /* Add element named NAME to command list *LIST.
30 FUN should be the function to execute the command;
31 it will get a character string as argument, with leading
32 and trailing blanks already eliminated.
34 DOC is a documentation string for the command.
35 Its first line should be a complete sentence.
36 It should start with ? for a command that is an abbreviation
37 or with * for a command that most users don't need to know about. */
39 struct cmd_list_element *
40 add_cmd (name, class, fun, doc, list)
42 enum command_class class;
45 struct cmd_list_element **list;
47 register struct cmd_list_element *c
48 = (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element));
50 delete_cmd (name, list);
57 c->prefixname = (char *)NULL;
61 c->type = not_set_cmd;
62 c->completer = make_symbol_completion_list;
64 c->var_type = var_boolean;
70 /* Same as above, except that the abbrev_flag is set. */
72 struct cmd_list_element *
73 add_abbrev_cmd (name, class, fun, doc, list)
75 enum command_class class;
78 struct cmd_list_element **list;
80 register struct cmd_list_element *c
81 = add_cmd (name, class, fun, doc, list);
87 struct cmd_list_element *
88 add_alias_cmd (name, oldname, class, abbrev_flag, list)
91 enum command_class class;
93 struct cmd_list_element **list;
95 /* Must do this since lookup_cmd tries to side-effect its first arg */
97 register struct cmd_list_element *old;
98 register struct cmd_list_element *c;
99 copied_name = (char *) alloca (strlen (oldname) + 1);
100 strcpy (copied_name, oldname);
101 old = lookup_cmd (&copied_name, *list, "", 1, 1);
105 delete_cmd (name, list);
109 c = add_cmd (name, class, old->function, old->doc, list);
110 c->prefixlist = old->prefixlist;
111 c->prefixname = old->prefixname;
112 c->allow_unknown = old->allow_unknown;
113 c->abbrev_flag = abbrev_flag;
118 /* Like add_cmd but adds an element for a command prefix:
119 a name that should be followed by a subcommand to be looked up
120 in another command list. PREFIXLIST should be the address
121 of the variable containing that list. */
123 struct cmd_list_element *
124 add_prefix_cmd (name, class, fun, doc, prefixlist, prefixname,
127 enum command_class class;
130 struct cmd_list_element **prefixlist;
133 struct cmd_list_element **list;
135 register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list);
136 c->prefixlist = prefixlist;
137 c->prefixname = prefixname;
138 c->allow_unknown = allow_unknown;
142 /* Like add_prefix_cmd butsets the abbrev_flag on the new command. */
144 struct cmd_list_element *
145 add_abbrev_prefix_cmd (name, class, fun, doc, prefixlist, prefixname,
148 enum command_class class;
151 struct cmd_list_element **prefixlist;
154 struct cmd_list_element **list;
156 register struct cmd_list_element *c = add_cmd (name, class, fun, doc, list);
157 c->prefixlist = prefixlist;
158 c->prefixname = prefixname;
159 c->allow_unknown = allow_unknown;
166 not_just_help_class_command (args, from_tty, c)
169 struct cmd_list_element *c;
173 /* Add element named NAME to command list LIST (the list for set
174 or some sublist thereof).
175 CLASS is as in add_cmd.
176 VAR_TYPE is the kind of thing we are setting.
177 VAR is address of the variable being controlled by this command.
178 DOC is the documentation string. */
179 struct cmd_list_element *
180 add_set_cmd (name, class, var_type, var, doc, list)
182 enum command_class class;
186 struct cmd_list_element **list;
188 /* For set/show, we have to call do_setshow_command
189 differently than an ordinary function (take commandlist as
190 well as arg), so the function field isn't helpful. However,
191 function == NULL means that it's a help class, so set the function
192 to not_just_help_class_command. */
193 struct cmd_list_element *c
194 = add_cmd (name, class, not_just_help_class_command, doc, list);
197 c->var_type = var_type;
202 /* Where SETCMD has already been added, add the corresponding show
203 command to LIST and return a pointer to it. */
204 struct cmd_list_element *
205 add_show_from_set (setcmd, list)
206 struct cmd_list_element *setcmd;
207 struct cmd_list_element **list;
209 struct cmd_list_element *showcmd =
210 (struct cmd_list_element *) xmalloc (sizeof (struct cmd_list_element));
212 bcopy (setcmd, showcmd, sizeof (struct cmd_list_element));
213 delete_cmd (showcmd->name, list);
214 showcmd->type = show_cmd;
216 /* Replace "set " at start of docstring with "show ". */
217 if (setcmd->doc[0] == 'S' && setcmd->doc[1] == 'e'
218 && setcmd->doc[2] == 't' && setcmd->doc[3] == ' ')
219 showcmd->doc = concat ("Show ", setcmd->doc + 4, NULL);
221 fprintf (stderr, "GDB internal error: Bad docstring for set command\n");
223 showcmd->next = *list;
228 /* Remove the command named NAME from the command list. */
231 delete_cmd (name, list)
233 struct cmd_list_element **list;
235 register struct cmd_list_element *c;
236 struct cmd_list_element *p;
238 while (*list && !strcmp ((*list)->name, name))
246 for (c = *list; c->next;)
248 if (!strcmp (c->next->name, name))
259 /* This command really has to deal with two things:
260 * 1) I want documentation on *this string* (usually called by
261 * "help commandname").
262 * 2) I want documentation on *this list* (usually called by
263 * giving a command that requires subcommands. Also called by saying
266 * I am going to split this into two seperate comamnds, help_cmd and
271 help_cmd (command, stream)
275 struct cmd_list_element *c;
276 extern struct cmd_list_element *cmdlist;
280 help_list (cmdlist, "", all_classes, stream);
284 c = lookup_cmd (&command, cmdlist, "", 0, 0);
289 /* There are three cases here.
290 If c->prefixlist is nonzero, we have a prefix command.
291 Print its documentation, then list its subcommands.
293 If c->function is nonzero, we really have a command.
294 Print its documentation and return.
296 If c->function is zero, we have a class name.
297 Print its documentation (as if it were a command)
298 and then set class to the number of this class
299 so that the commands in the class will be listed. */
301 fputs_filtered (c->doc, stream);
302 fputs_filtered ("\n", stream);
304 if (c->prefixlist == 0 && c->function != 0)
306 fprintf_filtered (stream, "\n");
308 /* If this is a prefix command, print it's subcommands */
310 help_list (*c->prefixlist, c->prefixname, all_commands, stream);
312 /* If this is a class name, print all of the commands in the class */
313 if (c->function == 0)
314 help_list (cmdlist, "", c->class, stream);
318 * Get a specific kind of help on a command list.
321 * CMDTYPE is the prefix to use in the title string.
322 * CLASS is the class with which to list the nodes of this list (see
323 * documentation for help_cmd_list below), As usual, ALL_COMMANDS for
324 * everything, ALL_CLASSES for just classes, and non-negative for only things
325 * in a specific class.
326 * and STREAM is the output stream on which to print things.
327 * If you call this routine with a class >= 0, it recurses.
330 help_list (list, cmdtype, class, stream)
331 struct cmd_list_element *list;
333 enum command_class class;
337 char *cmdtype1, *cmdtype2;
339 /* If CMDTYPE is "foo ", CMDTYPE1 gets " foo" and CMDTYPE2 gets "foo sub" */
340 len = strlen (cmdtype);
341 cmdtype1 = (char *) alloca (len + 1);
343 cmdtype2 = (char *) alloca (len + 4);
348 strncpy (cmdtype1 + 1, cmdtype, len - 1);
350 strncpy (cmdtype2, cmdtype, len - 1);
351 strcpy (cmdtype2 + len - 1, " sub");
354 if (class == all_classes)
355 fprintf_filtered (stream, "List of classes of %scommands:\n\n", cmdtype2);
357 fprintf_filtered (stream, "List of %scommands:\n\n", cmdtype2);
359 help_cmd_list (list, class, cmdtype, (int)class >= 0, stream);
361 if (class == all_classes)
362 fprintf_filtered (stream, "\n\
363 Type \"help%s\" followed by a class name for a list of commands in that class.",
366 fprintf_filtered (stream, "\n\
367 Type \"help%s\" followed by %scommand name for full documentation.\n\
368 Command name abbreviations are allowed if unambiguous.\n",
372 /* Print only the first line of STR on STREAM. */
374 print_doc_line (stream, str)
378 static char *line_buffer = 0;
379 static int line_size;
385 line_buffer = (char *) xmalloc (line_size);
389 while (*p && *p != '\n' && *p != '.' && *p != ',')
391 if (p - str > line_size - 1)
393 line_size = p - str + 1;
395 line_buffer = (char *) xmalloc (line_size);
397 strncpy (line_buffer, str, p - str);
398 line_buffer[p - str] = '\0';
399 if (islower (line_buffer[0]))
400 line_buffer[0] = toupper (line_buffer[0]);
401 fputs_filtered (line_buffer, stream);
405 * Implement a help command on command list LIST.
406 * RECURSE should be non-zero if this should be done recursively on
407 * all sublists of LIST.
408 * PREFIX is the prefix to print before each command name.
409 * STREAM is the stream upon which the output should be written.
411 * A non-negative class number to list only commands in that
413 * ALL_COMMANDS to list all commands in list.
414 * ALL_CLASSES to list all classes in list.
416 * Note that RECURSE will be active on *all* sublists, not just the
417 * ones seclected by the criteria above (ie. the selection mechanism
418 * is at the low level, not the high-level).
421 help_cmd_list (list, class, prefix, recurse, stream)
422 struct cmd_list_element *list;
423 enum command_class class;
428 register struct cmd_list_element *c;
430 for (c = list; c; c = c->next)
432 if (c->abbrev_flag == 0 &&
433 (class == all_commands
434 || (class == all_classes && c->function == 0)
435 || (class == c->class && c->function != 0)))
437 fprintf_filtered (stream, "%s%s -- ", prefix, c->name);
438 print_doc_line (stream, c->doc);
439 fputs_filtered ("\n", stream);
442 && c->prefixlist != 0
443 && c->abbrev_flag == 0)
444 help_cmd_list (*c->prefixlist, class, c->prefixname, 1, stream);
448 /* This routine takes a line of TEXT and a CLIST in which to
449 start the lookup. When it returns it will have incremented the text
450 pointer past the section of text it matched, set *RESULT_LIST to
451 the list in which the last word was matched, and will return the
452 cmd list element which the text matches. It will return 0 if no
453 match at all was possible. It will return -1 if ambigous matches are
454 possible; in this case *RESULT_LIST will be set to the list in which
455 there are ambiguous choices (and text will be set to the ambiguous
458 It does no error reporting whatsoever; control will always return
459 to the superior routine.
461 In the case of an ambiguous return (-1), *RESULT_LIST will be set to
462 point at the prefix_command (ie. the best match) *or* (special
463 case) will be 0 if no prefix command was ever found. For example,
464 in the case of "info a", "info" matches without ambiguity, but "a"
465 could be "args" or "address", so *RESULT_LIST is set to
466 the cmd_list_element for "info". So in this case
467 result list should not be interpeted as a pointer to the beginning
468 of a list; it simply points to a specific command.
470 If RESULT_LIST is NULL, don't set *RESULT_LIST (but don't otherwise
471 affect the operation).
473 This routine does *not* modify the text pointed to by TEXT.
475 If IGNORE_HELP_CLASSES is nonzero, ignore any command list
476 elements which are actually help classes rather than commands (i.e.
477 the function field of the struct cmd_list_element is 0). */
479 struct cmd_list_element *
480 lookup_cmd_1 (text, clist, result_list, ignore_help_classes)
482 struct cmd_list_element *clist, **result_list;
483 int ignore_help_classes;
486 int len, tmp, nfound;
487 struct cmd_list_element *found, *c;
489 while (**text == ' ' || **text == '\t')
492 /* Treating underscores as part of command words is important
493 so that "set args_foo()" doesn't get interpreted as
494 "set args _foo()". */
496 *p && (isalnum(*p) || *p == '-' || *p == '_');
500 /* If nothing but whitespace, return 0. */
506 /* *text and p now bracket the first command word to lookup (and
507 it's length is len). We copy this into a local temporary,
508 converting to lower case as we go. */
510 command = (char *) alloca (len + 1);
511 for (tmp = 0; tmp < len; tmp++)
513 char x = (*text)[tmp];
514 command[tmp] = (x >= 'A' && x <= 'Z') ? x - 'A' + 'a' : x;
521 for (c = clist; c; c = c->next)
522 if (!strncmp (command, c->name, len)
523 && (!ignore_help_classes || c->function))
527 if (c->name[len] == '\0')
534 /* If nothing matches, we have a simple failure. */
540 if (result_list != NULL)
541 /* Will be modified in calling routine
542 if we know what the prefix command is. */
544 return (struct cmd_list_element *) -1; /* Ambiguous. */
547 /* We've matched something on this list. Move text pointer forward. */
550 if (found->prefixlist)
552 c = lookup_cmd_1 (text, *found->prefixlist, result_list,
553 ignore_help_classes);
556 /* Didn't find anything; this is as far as we got. */
557 if (result_list != NULL)
558 *result_list = clist;
561 else if (c == (struct cmd_list_element *) -1)
563 /* We've gotten this far properley, but the next step
564 is ambiguous. We need to set the result list to the best
565 we've found (if an inferior hasn't already set it). */
566 if (result_list != NULL)
568 /* This used to say *result_list = *found->prefixlist
569 If that was correct, need to modify the documentation
570 at the top of this function to clarify what is supposed
572 *result_list = found;
583 if (result_list != NULL)
584 *result_list = clist;
589 /* All this hair to move the space to the front of cmdtype */
592 undef_cmd_error (cmdtype, q)
595 error ("Undefined %scommand: \"%s\". Try \"help%s%.*s\".",
603 /* Look up the contents of *LINE as a command in the command list LIST.
604 LIST is a chain of struct cmd_list_element's.
605 If it is found, return the struct cmd_list_element for that command
606 and update *LINE to point after the command name, at the first argument.
607 If not found, call error if ALLOW_UNKNOWN is zero
608 otherwise (or if error returns) return zero.
609 Call error if specified command is ambiguous,
610 unless ALLOW_UNKNOWN is negative.
611 CMDTYPE precedes the word "command" in the error message.
613 If INGNORE_HELP_CLASSES is nonzero, ignore any command list
614 elements which are actually help classes rather than commands (i.e.
615 the function field of the struct cmd_list_element is 0). */
617 struct cmd_list_element *
618 lookup_cmd (line, list, cmdtype, allow_unknown, ignore_help_classes)
620 struct cmd_list_element *list;
623 int ignore_help_classes;
625 struct cmd_list_element *last_list = 0;
626 struct cmd_list_element *c =
627 lookup_cmd_1 (line, list, &last_list, ignore_help_classes);
628 char *ptr = (*line) + strlen (*line) - 1;
630 /* Clear off trailing whitespace. */
631 while (ptr >= *line && (*ptr == ' ' || *ptr == '\t'))
640 error ("Lack of needed %scommand", cmdtype);
645 while (isalnum(*p) || *p == '-')
648 q = (char *) alloca (p - *line + 1);
649 strncpy (q, *line, p - *line);
651 undef_cmd_error (cmdtype, q);
657 else if (c == (struct cmd_list_element *) -1)
659 /* Ambigous. Local values should be off prefixlist or called
661 int local_allow_unknown = (last_list ? last_list->allow_unknown :
663 char *local_cmdtype = last_list ? last_list->prefixname : cmdtype;
664 struct cmd_list_element *local_list =
665 (last_list ? *(last_list->prefixlist) : list);
667 if (local_allow_unknown < 0)
670 return last_list; /* Found something. */
672 return 0; /* Found nothing. */
676 /* Report as error. */
681 ((*line)[amb_len] && (*line)[amb_len] != ' '
682 && (*line)[amb_len] != '\t');
687 for (c = local_list; c; c = c->next)
688 if (!strncmp (*line, c->name, amb_len))
690 if (strlen (ambbuf) + strlen (c->name) + 6 < (int)sizeof ambbuf)
693 strcat (ambbuf, ", ");
694 strcat (ambbuf, c->name);
698 strcat (ambbuf, "..");
702 error ("Ambiguous %scommand \"%s\": %s.", local_cmdtype,
709 /* We've got something. It may still not be what the caller
710 wants (if this command *needs* a subcommand). */
711 while (**line == ' ' || **line == '\t')
714 if (c->prefixlist && **line && !c->allow_unknown)
715 undef_cmd_error (c->prefixname, *line);
717 /* Seems to be what he wants. Return it. */
724 /* Look up the contents of *LINE as a command in the command list LIST.
725 LIST is a chain of struct cmd_list_element's.
726 If it is found, return the struct cmd_list_element for that command
727 and update *LINE to point after the command name, at the first argument.
728 If not found, call error if ALLOW_UNKNOWN is zero
729 otherwise (or if error returns) return zero.
730 Call error if specified command is ambiguous,
731 unless ALLOW_UNKNOWN is negative.
732 CMDTYPE precedes the word "command" in the error message. */
734 struct cmd_list_element *
735 lookup_cmd (line, list, cmdtype, allow_unknown)
737 struct cmd_list_element *list;
742 register struct cmd_list_element *c, *found;
748 /* Skip leading whitespace. */
750 while (**line == ' ' || **line == '\t')
753 /* Clear out trailing whitespace. */
755 p = *line + strlen (*line);
756 while (p != *line && (p[-1] == ' ' || p[-1] == '\t'))
760 /* Find end of command name. */
764 || (*p >= 'a' && *p <= 'z')
765 || (*p >= 'A' && *p <= 'Z')
766 || (*p >= '0' && *p <= '9'))
769 /* Look up the command name.
770 If exact match, keep that.
771 Otherwise, take command abbreviated, if unique. Note that (in my
772 opinion) a null string does *not* indicate ambiguity; simply the
773 end of the argument. */
778 error ("Lack of needed %scommand", cmdtype);
782 /* Copy over to a local buffer, converting to lowercase on the way.
783 This is in case the command being parsed is a subcommand which
784 doesn't match anything, and that's ok. We want the original
785 untouched for the routine of the original command. */
787 processed_cmd = (char *) alloca (p - *line + 1);
788 for (cmd_len = 0; cmd_len < p - *line; cmd_len++)
790 char x = (*line)[cmd_len];
791 if (x >= 'A' && x <= 'Z')
792 processed_cmd[cmd_len] = x - 'A' + 'a';
794 processed_cmd[cmd_len] = x;
796 processed_cmd[cmd_len] = '\0';
798 /* Check all possibilities in the current command list. */
801 for (c = list; c; c = c->next)
803 if (!strncmp (processed_cmd, c->name, cmd_len))
807 if (c->name[cmd_len] == 0)
815 /* Report error for undefined command name. */
819 if (nfound > 1 && allow_unknown >= 0)
822 for (c = list; c; c = c->next)
823 if (!strncmp (processed_cmd, c->name, cmd_len))
825 if (strlen (ambbuf) + strlen (c->name) + 6 < sizeof ambbuf)
828 strcat (ambbuf, ", ");
829 strcat (ambbuf, c->name);
833 strcat (ambbuf, "..");
837 error ("Ambiguous %scommand \"%s\": %s.", cmdtype,
838 processed_cmd, ambbuf);
840 else if (!allow_unknown)
841 error ("Undefined %scommand: \"%s\".", cmdtype, processed_cmd);
845 /* Skip whitespace before the argument. */
847 while (*p == ' ' || *p == '\t') p++;
850 if (found->prefixlist && *p)
852 c = lookup_cmd (line, *found->prefixlist, found->prefixname,
853 found->allow_unknown);
862 /* Helper function for SYMBOL_COMPLETION_FUNCTION. */
864 /* Return a vector of char pointers which point to the different
865 possible completions in LIST of TEXT. */
868 complete_on_cmdlist (list, text)
869 struct cmd_list_element *list;
872 struct cmd_list_element *ptr;
874 int sizeof_matchlist;
876 int textlen = strlen (text);
878 sizeof_matchlist = 10;
879 matchlist = (char **) xmalloc (sizeof_matchlist * sizeof (char *));
882 for (ptr = list; ptr; ptr = ptr->next)
883 if (!strncmp (ptr->name, text, textlen)
888 if (matches == sizeof_matchlist)
890 sizeof_matchlist *= 2;
891 matchlist = (char **) xrealloc ((char *)matchlist,
896 matchlist[matches] = (char *)
897 xmalloc (strlen (ptr->name) + 1);
898 strcpy (matchlist[matches++], ptr->name);
908 matchlist = (char **) xrealloc ((char *)matchlist, ((matches + 1)
910 matchlist[matches] = (char *) 0;
917 parse_binary_operation (arg)
925 length = strlen (arg);
927 while (arg[length - 1] == ' ' || arg[length - 1] == '\t')
930 if (!strncmp (arg, "on", length)
931 || !strncmp (arg, "1", length)
932 || !strncmp (arg, "yes", length))
935 if (!strncmp (arg, "off", length)
936 || !strncmp (arg, "0", length)
937 || !strncmp (arg, "no", length))
941 error ("\"on\" or \"off\" expected.");
946 /* Do a "set" or "show" command. ARG is NULL if no argument, or the text
947 of the argument, and FROM_TTY is nonzero if this command is being entered
948 directly by the user (i.e. these are just like any other
949 command). C is the command list element for the command. */
951 do_setshow_command (arg, from_tty, c)
954 struct cmd_list_element *c;
956 if (c->type == set_cmd)
969 new = (char *) xmalloc (strlen (arg) + 2);
975 /* \ at end of argument is used after spaces
976 so they won't be lost. */
979 ch = parse_escape (&p);
988 if (*(p - 1) != '\\')
991 new = (char *) xrealloc (new, q - new);
992 if (*(char **)c->var != NULL)
993 free (*(char **)c->var);
994 *(char **) c->var = new;
997 case var_string_noescape:
1000 if (*(char **)c->var != NULL)
1001 free (*(char **)c->var);
1002 *(char **) c->var = savestring (arg, strlen (arg));
1006 error_no_arg ("filename to set it to.");
1007 if (*(char **)c->var != NULL)
1008 free (*(char **)c->var);
1009 *(char **)c->var = tilde_expand (arg);
1012 *(int *) c->var = parse_binary_operation (arg);
1016 error_no_arg ("integer to set it to.");
1017 *(int *) c->var = parse_and_eval_address (arg);
1018 if (*(int *) c->var == 0)
1019 *(int *) c->var = UINT_MAX;
1023 error_no_arg ("integer to set it to.");
1024 *(int *) c->var = parse_and_eval_address (arg);
1027 error ("gdb internal error: bad var_type in do_setshow_command");
1030 else if (c->type == show_cmd)
1032 /* Print doc minus "show" at start. */
1033 print_doc_line (stdout, c->doc + 5);
1035 fputs_filtered (" is ", stdout);
1037 switch (c->var_type)
1042 fputs_filtered ("\"", stdout);
1043 for (p = *(unsigned char **) c->var; *p != '\0'; p++)
1044 printchar (*p, stdout, '"');
1045 fputs_filtered ("\"", stdout);
1048 case var_string_noescape:
1050 fputs_filtered ("\"", stdout);
1051 fputs_filtered (*(char **) c->var, stdout);
1052 fputs_filtered ("\"", stdout);
1055 fputs_filtered (*(int *) c->var ? "on" : "off", stdout);
1058 if (*(unsigned int *) c->var == UINT_MAX) {
1059 fputs_filtered ("unlimited", stdout);
1062 /* else fall through */
1064 fprintf_filtered (stdout, "%d", *(unsigned int *) c->var);
1067 error ("gdb internal error: bad var_type in do_setshow_command");
1069 fputs_filtered (".\n", stdout);
1072 error ("gdb internal error: bad cmd_type in do_setshow_command");
1073 (*c->function) (NULL, from_tty, c);
1076 /* Show all the settings in a list of show commands. */
1079 cmd_show_list (list, from_tty, prefix)
1080 struct cmd_list_element *list;
1084 for (; list != NULL; list = list->next) {
1085 /* If we find a prefix, run its list, prefixing our output by its
1086 prefix (with "show " skipped). */
1087 if (list->prefixlist && !list->abbrev_flag)
1088 cmd_show_list (*list->prefixlist, from_tty, list->prefixname + 5);
1089 if (list->type == show_cmd)
1091 fputs_filtered (prefix, stdout);
1092 fputs_filtered (list->name, stdout);
1093 fputs_filtered (": ", stdout);
1094 do_setshow_command ((char *)NULL, from_tty, list);
1101 shell_escape (arg, from_tty)
1105 int rc, status, pid;
1106 char *p, *user_shell;
1107 extern char *rindex ();
1109 if ((user_shell = (char *) getenv ("SHELL")) == NULL)
1110 user_shell = "/bin/sh";
1112 /* Get the name of the shell for arg0 */
1113 if ((p = rindex (user_shell, '/')) == NULL)
1116 p++; /* Get past '/' */
1118 if ((pid = fork()) == 0)
1121 execl (user_shell, p, 0);
1123 execl (user_shell, p, "-c", arg, 0);
1125 fprintf (stderr, "Exec of shell failed\n");
1130 while ((rc = wait (&status)) != pid && rc != -1)
1133 error ("Fork failed");
1137 make_command (arg, from_tty)
1147 p = xmalloc (sizeof("make ") + strlen(arg));
1148 strcpy (p, "make ");
1149 strcpy (p + sizeof("make ")-1, arg);
1152 shell_escape (p, from_tty);
1156 user_info_1 (c, stream)
1157 struct cmd_list_element *c;
1160 register struct command_line *cmdlines;
1162 cmdlines = c->user_commands;
1165 fprintf_filtered (stream, "User command %s:\n", c->name);
1168 fprintf_filtered (stream, "%s\n", cmdlines->line);
1169 cmdlines = cmdlines->next;
1171 fputs_filtered ("\n", stream);
1176 user_info (args, from_tty)
1180 struct cmd_list_element *c;
1181 extern struct cmd_list_element *cmdlist;
1185 c = lookup_cmd (&args, cmdlist, "", 0, 1);
1186 if (c->class != class_user)
1187 error ("Not a user command.");
1188 user_info_1 (c, stdout);
1192 for (c = cmdlist; c; c = c->next)
1194 if (c->class == class_user)
1195 user_info_1 (c, stdout);
1201 _initialize_command ()
1203 add_com ("shell", class_support, shell_escape,
1204 "Execute the rest of the line as a shell command. \n\
1205 With no arguments, run an inferior shell.");
1207 add_com ("make", class_support, make_command,
1208 "Run the ``make'' program using the rest of the line as arguments.");
1210 add_info ("user", user_info, "Show definitions of user defined commands.\n\
1211 Argument is the name of the user defined command.\n\
1212 With no argument, show definitions of all user defined commands.");