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-rw-r--r--sbin/bim/command.c292
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diff --git a/sbin/bim/command.c b/sbin/bim/command.c
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--- a/sbin/bim/command.c
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-/* $OpenBSD: command.c,v 1.2 1996/06/23 14:29:57 deraadt Exp $ */
-/* $NetBSD: command.c,v 1.2 1995/03/18 12:28:15 cgd Exp $ */
-
-/*
- * Copyright (c) 1994 Philip A. Nelson.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by Philip A. Nelson.
- * 4. The name of Philip A. Nelson may not be used to endorse or promote
- * products derived from this software without specific prior written
- * permission.
- *
- * THIS SOFTWARE IS PROVIDED BY PHILIP NELSON ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL PHILIP NELSON BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-/*
- * command.c - The routines to implement the command processor.
- *
- * The user must add to "cmdtable.h" all commands that are available.
- */
-
-#include <stdio.h>
-#include <ctype.h>
-#include "command.h"
-#include "cmdtable.h"
-
-
-/* This allows the user to define the prompt in cmdtable.h */
-#ifndef PROMPT
-#define PROMPT "Command (? for help): "
-#endif
-
-
-/* Other procedure prototypes. */
-PROTO (void prompt, (char *, int, char *));
-PROTO (int parse, (char *, char **));
-PROTO (CONST struct command *find_entry, (char *));
-PROTO (int StrCmp, (char *, char *));
-
-/* A pointer to a function to be called after every command.
- A NULL pointer says no function is to be executed.
- The int parameter is the "done" flag.. TRUE => last command */
-
-PROTO (void (*after_cmd), (int)) = NULL;
-
-/* This is the command processor loop. */
-
-command_loop ()
-{
- char cmdline [LINELEN];
- char *args [MAXARGS];
- int numargs;
- CONST struct command *cmd;
- int done = FALSE;
-
- int ix;
-
- while (!done) {
- prompt(cmdline, LINELEN, PROMPT);
- numargs = parse (cmdline, args);
- if (numargs == BLANK_LINE) continue;
- cmd = find_entry (args[0]);
- if (cmd != NULL)
- {
- done = (*(cmd->fn)) (numargs, args, cmd->syntax);
- if (after_cmd != NULL)
- (*(after_cmd)) (done);
- }
- else
- printf ("Unknown command\n");
- }
-}
-
-/* This is the command processor for a single command. */
-int
-one_command (cmdline)
- char *cmdline;
-{
- char *args [MAXARGS];
- int numargs;
- CONST struct command *cmd;
- int done;
-
- numargs = parse (cmdline, args);
- if (numargs == BLANK_LINE) return 0;
- cmd = find_entry (args[0]);
- if (cmd != NULL)
- {
- done = (*(cmd->fn)) (numargs, args, cmd->syntax);
- if (after_cmd != NULL)
- (*(after_cmd)) (done);
- return done;
- }
- else
- return 0;
-}
-
-/* prompt procedure.... Write out the prompt and then read
- a response. */
-
-void prompt (cmdline, linelen, promptstr)
- char *cmdline;
- int linelen;
- char *promptstr;
-{
- int incount = 0;
- int inchar;
-
- /* Give the prompt. */
- printf ("%s", promptstr);
- fflush (stdout);
-
- /* Read chars until newline or EOF, toss chars that won't fit in the
- array. */
- while (TRUE)
- {
- inchar = getchar();
- if (inchar == '\n' || inchar == EOF) break;
- if (++incount < linelen) *cmdline++ = inchar;
- }
- *cmdline = 0;
-}
-
-
-/* parse the arguments on an input line. It returns an array of
- pointers to substrings in the original string. It puts the string
- terminator in the original line. */
-
-int parse (cmdline, args)
- char *cmdline;
- char **args;
-{
- int index;
- int argcnt = BLANK_LINE;
-
- /* Initialize the args. */
- for (index = 0; index < MAXARGS; index++)
- args[index] = NULL;
-
- /* Start looking for the commands */
- while (*cmdline != 0)
- {
- while (isspace(*cmdline)) cmdline++; /* skip blanks. */
- if (*cmdline != 0)
- {
- /* Start of new argument. */
- if (argcnt < MAXARGS) args[argcnt] = cmdline;
- while (!isspace(*cmdline) && *cmdline != 0) cmdline++;
- if (*cmdline != 0) *cmdline++ = 0;
- argcnt++;
- }
- }
- return (argcnt < MAXARGS ? argcnt : MAXARGS -1);
-}
-
-
-/* Search cmd_tbl for 1) a command matching what the user typed or 2)
- * a unique command which is a superstring of what the user typed.
- */
-
-CONST struct command *
-find_entry (name)
-char *name;
-{
- CONST struct command *item, *save;
- int subcount = 0;
-
- for (item = cmd_table; item < cmd_table + CMDLEN; item++)
- switch (StrCmp (name, item->name)) {
- case CMP_MATCH:
- return item;
- case CMP_SUBSTR:
- subcount++;
- save = item;
- break;
- case CMP_NOMATCH:
- break;
- }
- return (subcount == 1)? save : NULL;
-}
-
-
-/* Returns CMP_MATCH if strings are the same, CMP_SUBSTR if p1 is a
- * proper substring of p2, and CMP_NOMATCH if neither.
- */
-int
-StrCmp (p1, p2)
-register char *p1, *p2;
-{
- while (*p1 == *p2 && *p1 != '\0') {
- ++p1;
- ++p2;
- }
- if (*p1 == '\0')
- return (*p2 == '\0')? CMP_MATCH: CMP_SUBSTR;
- return CMP_NOMATCH;
-}
-
-
-/* Other routines that may be helpful in evaluating arguments....
- */
-
-int
-Str2Int (str, num)
- char *str;
- int *num;
-{
- if (!isdigit(*str) && *str != '-') return FALSE;
- *num = atoi (str);
- return TRUE;
-}
-
-
-
-#ifndef NO_HELP
-/* "?" command handler. Print help and list of commands.
- */
-help_cmds ()
-{
- CONST struct command *q;
-
- printf("\nFor additional help, type HELP <command>. Commands are:\n");
- for (q = cmd_table; q < cmd_table + CMDLEN; ++q)
- if ((q - cmd_table) % 5 == 4)
- printf ("%s\n", q -> name);
- else
- printf ("%-15s", q -> name);
- if ((q - cmd_table) % 5 != 0)
- printf ("\n");
- printf ("\n");
-}
-
-/* The default help routine. This may be redefined by the user. */
-int help (num, args, syntax)
- int num;
- char **args;
- char *syntax;
-{
- CONST struct command *item;
- int index;
- int show_cmds = FALSE;
- char dummy[2];
-
- if (args[0][0] == '?') num = 1; /* Force "no args" for ?. */
-
- /* Print help for each argument. */
- if (num > 1)
- for (index = 1; index < num; index++)
- {
- item = find_entry (args[index]);
- if (item != NULL)
- {
- printf ("\n");
- if (item -> syntax[0] != 0)
- printf ("Syntax: %s\n", item -> syntax);
- printf ("%s\n\n", item -> help);
- if (index < num-1) prompt (dummy, 1, "cr to continue:");
- }
- else
- {
- printf ("unknow command %s.\n", args[index]);
- show_cmds = TRUE;
- }
- }
-
- if (show_cmds || num == 1)
- help_cmds ();
-
- return FALSE;
-}
-#endif
-
-
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