File: [local] / prex-old / usr / bin / cmdbox / main.c (download)
Revision 1.1.1.1 (vendor branch), Tue Jun 3 09:38:46 2008 UTC (16 years, 3 months ago) by nbrk
Branch: MAIN, KOHSUKE
CVS Tags: PREX_0_7_BASE, HEAD Branch point for: PREX_0_8_BASE
Changes since 1.1: +0 -0 lines
Yeah, this is an initial import of Prex, portable real-time microkernel
operating system. I wanna hack it for non-profit but fun, so let it in.
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/*
* Copyright (c) 2005-2006, Kohsuke Ohtani
* 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. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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.
*/
#include <prex/prex.h>
#include <sys/utsname.h>
#include <sys/ioctl.h>
#include <limits.h>
#include <ctype.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <libgen.h>
#include "cmdbox.h"
#ifdef CONFIG_CMD_SH
extern int sh_main(int argc, char *argv[]);
#endif
int
help_main(int argc, char *argv[])
{
struct cmd_entry const *entry;
struct winsize ws;
int maxcol, col = 0;
/* Get screen size */
maxcol = 80;
if (ioctl(fileno(stderr), TIOCGWINSZ, (u_long)&ws) == 0)
maxcol = (int)ws.ws_col;
if (maxcol < 80)
maxcol -= 15;
else
maxcol -= 25;
fprintf(stderr, "usage: cmdbox [command] [arguments]...\n");
fprintf(stderr, "builtin commands:\n");
entry = builtin_cmds;
while (entry->cmd != NULL) {
col += fprintf(stderr, "%s%s", ((col == 0) ? " " : ", "),
entry->cmd);
entry++;
if (col > maxcol && entry->cmd != NULL) {
fprintf(stderr, ",\n");
col = 0;
}
}
fprintf(stderr, "\nuse `-?` to find out more about each command.\n");
return 0;
}
static void
bannar(void)
{
struct info_kernel info;
sys_info(INFO_KERNEL, &info);
printf("%s version %s (%s)\n",
info.sysname, info.version, info.machine);
}
int
main(int argc, char *argv[])
{
static char *shcmd[] = {"sh"};
char *prog, *cmd;
struct cmd_entry const *entry;
prog = basename(argv[0]);
if (!strcmp(prog, "cmdbox")) {
if (argc == 1) {
bannar();
#ifdef CONFIG_CMD_SH
exit(sh_main(1, shcmd));
#else
exit(1);
#endif
} else {
cmd = argv[1];
argv++;
argc--;
}
} else
cmd = prog;
entry = builtin_cmds;
while (entry->cmd != NULL) {
if (!strcmp(cmd, entry->cmd))
exit(entry->func(argc, argv));
entry++;
}
return 0;
}