/*
 * C version by Wessel Dankers <wsl@fruit.eu.org>
 *
 * This code is in the public domain.
 *
 */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>

void print_usage(const char *progname)
{
  fprintf(stderr, "Command line usage: %s [flags] -- prefix [recipients]\n", progname);
  exit(1);
}

int main(int argc, char **argv)
{
  char **opts, **opt, *pfx;
  int i;

  if (argc <= 1)
  {
    print_usage(argv[0]);
  }

  opts = malloc((2 * argc + 1) * sizeof (* opts));	/* __MEM_CHECKED__ */
  if (!opts)
  {
    perror(argv[0]);
    exit(2);
  }

  if (argc < 2)
  {
    fprintf (stderr,
             "Command line usage: %s [flags] -- prefix [recipients]\n",
             argv[0]);
    return 1;
  }

  opt = opts;
  *opt++ = argv[1];
  pfx = NULL;

  for (i = 2; i < argc; )
  {
    if (!strcmp(argv[i], "--"))
    {
      i += 2;
      if (i > argc)
      {
        print_usage(argv[0]);
      }
      pfx = argv[i-1];
    }
    if (pfx)
      *opt++ = pfx;
    *opt++ = argv[i++];
  }
  *opt = NULL;

  execvp(opts[0], opts);
  perror(argv[0]);
  return 2;
}