scoutos / prex-0.9.0 / usr / bin / cmdbox / main.c @ 03e9c04a
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/*
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* Copyright (c) 2005-2006, Kohsuke Ohtani
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the names of any co-contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/prex.h> |
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#include <limits.h> |
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#include <ctype.h> |
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#include <unistd.h> |
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#include <string.h> |
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#include <stdlib.h> |
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#include <stdio.h> |
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#include <libgen.h> |
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#include <termios.h> |
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#include "cmdbox.h" |
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#ifdef CONFIG_CMD_SH
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extern int sh_main(int argc, char *argv[]); |
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#endif
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int
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null_main(int argc, char *argv[]) |
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{ |
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return -1; |
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} |
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int
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help_main(int argc, char *argv[]) |
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{ |
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struct cmdentry const *entry; |
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struct winsize ws;
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int maxcol, col = 0; |
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/* Get screen size */
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maxcol = 80;
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if (ioctl(fileno(stderr), TIOCGWINSZ, &ws) == 0) |
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maxcol = (int)ws.ws_col;
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if (maxcol < 80) |
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maxcol -= 15;
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else
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maxcol -= 25;
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fprintf(stderr, "usage: cmdbox [command] [arguments]...\n");
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fprintf(stderr, "builtin commands:\n");
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/*
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* Show help for builtin commands.
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*/
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entry = builtin_cmds; |
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while (entry->cmd != NULL) { |
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col += fprintf(stderr, "%s%s", ((col == 0) ? " " : ", "), |
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entry->cmd); |
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entry++; |
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if (col > maxcol && entry->cmd != NULL) { |
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fprintf(stderr, ",\n");
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col = 0;
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} |
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} |
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#ifdef CONFIG_CMD_SH
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/*
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* Show help for shell commands.
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*/
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entry = shell_cmds; |
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while (entry->cmd != NULL) { |
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col += fprintf(stderr, "%s%s", ((col == 0) ? " " : ", "), |
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entry->cmd); |
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entry++; |
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if (col > maxcol && entry->cmd != NULL) { |
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fprintf(stderr, ",\n");
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col = 0;
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} |
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} |
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#endif
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fprintf(stderr, "\nuse `-?` to find out more about each command.\n");
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return 0; |
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} |
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int
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main(int argc, char *argv[]) |
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{ |
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char *prog, *cmd;
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struct cmdentry const *entry; |
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int shcmd = 0; |
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prog = basename(argv[0]);
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cmd = prog; |
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/*
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* Alias:
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* 'sh' => sh
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* 'cmdbox' => sh
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* 'cmdbox sh' => sh
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* 'cmdbox cmd' => cmd
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* 'cmd' (symlink) => cmd
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*/
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if (!strcmp(prog, "sh")) |
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shcmd = 1;
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else if (!strcmp(prog, "cmdbox")) { |
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if (argc == 1) |
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shcmd = 1;
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else {
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if (!strcmp(argv[1], "sh")) |
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shcmd = 1;
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else
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cmd = argv[1];
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argv++; |
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argc--; |
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} |
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} |
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if (shcmd) {
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task_setname(task_self(), "sh");
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exit(sh_main(argc, argv)); |
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} |
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entry = builtin_cmds; |
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while (entry->cmd != NULL) { |
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if (!strcmp(cmd, entry->cmd)) {
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task_setname(task_self(), cmd); |
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exit(entry->func(argc, argv)); |
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} |
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entry++; |
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} |
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fprintf(stderr, "No such command: %s\n", cmd);
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return 0; |
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} |