ftp.nice.ch/Attic/openStep/unix/mail/appnmail.1.8.s.bs.tgz#/appnmail.Solaris/mailapp-utilities/optutil.c

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/*+++*
 *  title:	optutil.c
 *  RCS         optutil.c,v 1.1 1996/12/01 17:03:26 tom Exp
 *  abstract:	command-line option handling support stuff.
 *  author:	Tom Hageman, The Netherlands <tom@basil.icce.rug.nl>
 *  created:	November 1996
 *  modified:	
 *---*/

#import <stdio.h>
#import <stdlib.h>
#import <string.h>

#import "optutil.h"
#import "version.h"

const char *basename(const char *path)
{
   const char *s = strrchr(path, '/');

   return (s ? ++s : path);
}

const char *_progname = "(unset)";

void handle_usage_help_version(int what, const char *usage, const char *help)
{
   switch (what) {
   case EXIT_USAGE:
      fprintf(stderr, usage, progname());
      fprintf(stderr, "try `%s -H' for more information.\n", progname()); 
      break;
   case EXIT_HELP:
      printf(usage, progname());
      printf(help, progname());
      what = EXIT_SUCCESS;
      break;
   case EXIT_VERSION:
      printf("%s: %s version %s, %s.\n",
             progname(), PACKAGE, VERSION, VERSION_DATE);
      what = EXIT_SUCCESS;
      break;
   default:
      return; /* no-op. */
   }
   exit(what);
}

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