examples/demo_info_options.c

/*
  File autogenerated by gengetopt version 2.3  
  generated with the following command:
  gengetopt --file-name=demo_info_options --unamed-opts --input=demo_info_options.ggo 

  The developers of gengetopt consider the fixed text that goes in all
  gengetopt output files to be in the public domain:
  we make no copyright claims on it.
*/


#include <stdio.h>
#include <stdlib.h>
#include <string.h>
/* If we use autoconf.  */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* Check for configure's getopt check result.  */
#ifndef HAVE_GETOPT_LONG
#include "getopt.h"
#else
#include <getopt.h>
#endif

#include "demo_info_options.h"


void
cmdline_parser_print_version (void)
{
  printf ("%s %s\n", PACKAGE, VERSION);
}

void
cmdline_parser_print_help (void)
{
  cmdline_parser_print_version ();
  printf("\n"
"Usage: %s [OPTIONS]... [FILES]...\n\
   -h  --help      Print help and exit\n\
   -V  --version   Print version and exit\n\
   -a  --assign    Test the assignment operator (default=off)\n\
   -w  --warning   Turn on warnings (for debugging) (default=off)\n\
   -n  --notice    Turn on notices (for debugging) (default=off)\n\
", PACKAGE);
}


static char *
gengetopt_strdup (char * s)
{
  char * n, * pn, * ps = s;
  while (*ps) ps++;
  n = (char *) malloc (1 + ps - s);
  if (n != NULL)
    {
      for (ps=s,pn=n; *ps; ps++,pn++)
        *pn = *ps;
      *pn = 0;
    }
  return n;
}


int
cmdline_parser (int argc, char * const *argv, struct gengetopt_args_info *args_info)
{
  int c;	/* Character of the parsed option.  */
  int missing_required_options = 0;	

  args_info->help_given = 0 ;
  args_info->version_given = 0 ;
  args_info->assign_given = 0 ;
  args_info->warning_given = 0 ;
  args_info->notice_given = 0 ;
#define clear_args() { \
  args_info->assign_flag = 0;\
  args_info->warning_flag = 0;\
  args_info->notice_flag = 0;\
}

  clear_args();

  args_info->inputs = NULL;
  args_info->inputs_num = 0;

  while (1)
    {
      int option_index = 0;
      static struct option long_options[] = {
        { "help",	0, NULL, 'h' },
        { "version",	0, NULL, 'V' },
        { "assign",	0, NULL, 'a' },
        { "warning",	0, NULL, 'w' },
        { "notice",	0, NULL, 'n' },
        { NULL,	0, NULL, 0 }
      };

      c = getopt_long (argc, argv, "hVawn", long_options, &option_index);

      if (c == -1) break;	/* Exit from `while (1)' loop.  */

      switch (c)
        {
        case 'h':	/* Print help and exit.  */
          clear_args ();
          cmdline_parser_print_help ();
          exit (0);

        case 'V':	/* Print version and exit.  */
          clear_args ();
          cmdline_parser_print_version ();
          exit (0);

        case 'a':	/* Test the assignment operator.  */
          args_info->assign_flag = !(args_info->assign_flag);
          break;

        case 'w':	/* Turn on warnings (for debugging).  */
          args_info->warning_flag = !(args_info->warning_flag);
          break;

        case 'n':	/* Turn on notices (for debugging).  */
          args_info->notice_flag = !(args_info->notice_flag);
          break;

        case 0:	/* Long option with no short option */

        case '?':	/* Invalid option.  */
          /* `getopt_long' already printed an error message.  */
          exit (1);

        default:	/* bug: option not considered.  */
          fprintf (stderr, "%s: option unknown: %c\n", PACKAGE, c);
          abort ();
        } /* switch */
    } /* while */

  if ( missing_required_options )
    exit (1);

  if (optind < argc)
    {
      int i = 0 ;

      args_info->inputs_num = argc - optind ;
      args_info->inputs = 
        (char **)(malloc ((args_info->inputs_num)*sizeof(char *))) ;
      while (optind < argc)
        args_info->inputs[ i++ ] = gengetopt_strdup (argv[optind++]) ; 
    }

  return 0;
}