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- /*******************************************************************************
- * Example source code for using the argtable3 library to implement:
- *
- * uname [-asnrvmpio] [--help] [--version]
- *
- * This file is part of the argtable3 library.
- *
- * Copyright (C) 1998-2001,2003-2011,2013 Stewart Heitmann
- * <sheitmann@users.sourceforge.net>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- * * Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * * 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.
- * * Neither the name of STEWART HEITMANN nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 STEWART HEITMANN 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 "argtable3.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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