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/*********************************************************************
Example source code for using the argtable2 library to implement:
uname [-asnrvmpio] [--help] [--version]
This file is part of the argtable2 library.
Copyright (C) 1998-2001,2003-2011 Stewart Heitmann
sheitmann@users.sourceforge.net
The argtable2 library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This software 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA.
**********************************************************************/
#include "argtable2.h"
/* Here we simulate the uname functionality */
int mymain(int kname, int nname, int krel, int kver, int mach, int proc, int hard, int opsys)
{
if (kname) printf("Linux ");
if (nname) printf("localhost.localdomain ");
if (krel) printf("2.4.19-16 ");
if (kver) printf("#1 Fri Sep 20 18:15:05 CEST 2002 ");
if (mach) printf("i686 ");
if (proc) printf("Intel ");
if (hard) printf("unknown ");
if (opsys) printf("GNU/Linux ");
printf("\n");
return 0;
}
int main(int argc, char **argv)
{
const char* progname = "uname";
struct arg_lit *all = arg_lit0("a", "all", "print all information, in the following order:");
struct arg_lit *kname = arg_lit0("s", "kernel-name", "print the kernel name");
struct arg_lit *nname = arg_lit0("n", "nodename", "print the node name");
struct arg_lit *krel = arg_lit0("r", "kernel-release", "print the kernel release");
struct arg_lit *kver = arg_lit0("v", "kernel-version", "print the kernel version");
struct arg_lit *mach = arg_lit0("m", "machine", "print the machine hardware name");
struct arg_lit *proc = arg_lit0("p", "processor", "print the processor type");
struct arg_lit *hard = arg_lit0("i", "hardware-platform","print the hardware platform");
struct arg_lit *opsys = arg_lit0("o", "operating-system", "print the operating system");
struct arg_lit *help = arg_lit0(NULL,"help", "print this help and exit");
struct arg_lit *vers = arg_lit0(NULL,"version", "print version information and exit");
struct arg_end *end = arg_end(20);
void* argtable[] = {all,kname,nname,krel,kver,mach,proc,hard,opsys,help,vers,end};
int nerrors;
int exitcode=0;
/* verify the argtable[] entries were allocated sucessfully */
if (arg_nullcheck(argtable) != 0)
{
/* NULL entries were detected, some allocations must have failed */
printf("%s: insufficient memory\n",progname);
exitcode=1;
goto exit;
}
/* Parse the command line as defined by argtable[] */
nerrors = arg_parse(argc,argv,argtable);
/* special case: '--help' takes precedence over error reporting */
if (help->count > 0)
{
printf("Usage: %s", progname);
arg_print_syntax(stdout,argtable,"\n");
printf("Print certain system information. With no options, same as -s.\n\n");
arg_print_glossary(stdout,argtable," %-25s %s\n");
printf("\nReport bugs to <foo@bar>.\n");
exitcode=0;
goto exit;
}
/* special case: '--version' takes precedence error reporting */
if (vers->count > 0)
{
printf("'%s' example program for the \"argtable\" command line argument parser.\n",progname);
printf("September 2003, Stewart Heitmann\n");
exitcode=0;
goto exit;
}
/* If the parser returned any errors then display them and exit */
if (nerrors > 0)
{
/* Display the error details contained in the arg_end struct.*/
arg_print_errors(stdout,end,progname);
printf("Try '%s --help' for more information.\n",progname);
exitcode=1;
goto exit;
}
/* special case: uname with no command line options is equivalent to "uname -s" */
if (argc==1)
{
exitcode = mymain(0,1,0,0,0,0,0,0);
goto exit;
}
/* special case: "uname -a" is equivalent to "uname -snrvmpi" */
if (all->count>0)
{
exitcode = mymain(1,1,1,1,1,1,1,1);
goto exit;
}
/* normal case: take the command line options at face value */
exitcode = mymain(kname->count, nname->count, krel->count, kver->count, mach->count, proc->count, hard->count, opsys->count);
exit:
/* deallocate each non-null entry in argtable[] */
arg_freetable(argtable,sizeof(argtable)/sizeof(argtable[0]));
return exitcode;
}
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