test_getopt_long.c

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/*
Copyright (C) 2007-12 Andrea Vedaldi and Brian Fulkerson.
All rights reserved.

This file is part of the VLFeat library and is made available under
the terms of the BSD license (see the COPYING file).
*/

#include <stdio.h>
#include <assert.h>

#include <vl/getopt_long.h>

int daggerset;

/* options descriptor */
static struct option longopts[] = {
  { "help",         no_argument,            0,           'h' },
  { "buffy",        no_argument,            0,           'b' },
  { "fluoride",     required_argument,      0,           'f' },
  { "daggerset",    no_argument,            &daggerset,   1000  },
  { "daggerunset",  no_argument,            &daggerset,   1001  },
  { "spike",        optional_argument,      0,            1002  },
  { NULL,           0,                      0,            0  }
};

int
main (int argc, char *argv[])
{
  int ch ;

  printf("*** parsing options: start\n") ;

  while ((ch = getopt_long(argc, argv, "hbf:", longopts, 0)) != -1) {

    switch (ch) {

    case 'h':
        printf("test_getopt_long: test VLFeat implementation of this function.\n"
               " --help -h      this message\n"
               " --buffy -b     option with no arguments\n"
               " --fluoride -f  option with required argument\n"
               " --daggerset    auto option with no arguments\n"
               " --daggerrunset auto option with no argument\n"
               " --spike        long option with optional argument\n") ;
        break;

    case 'b':
      printf("option `b' or `buffy'\n") ;
      break;

    case 'f':
      printf("option `f' or `flouride' with arg `%s'\n", optarg) ;
      break ;

    case 1002 :
      printf("option `spike' with arg `%s'\n", optarg) ;
      break ;

    case 0:
      printf("automatic longoption (daggerset=%d)\n", daggerset) ;
      break ;

    case  '?' :
      printf("illegal option or missing argument\n") ;
      break ;

    case ':'  :
      printf("illegal option\n") ;
      break ;

    default:
      abort() ;
    }
  }

  printf("*** parsing options: end\n");
  {
    int i ;
    for(i = optind ; i < argc ; ++i)
                printf("non-option: '%s'\n", argv[i]) ;
  }

  return 0 ;
}