106a107
>   { "recursive", no_argument, 0, 'r'},
132a134
>   -r, --recursive         check directories recursively\n\
477a480,574
> 
> void print_sum(char *file, int recurse, int binary, 
> 	       unsigned char bin_buffer[], 
> 	       int (*digest_stream)(FILE *, void *),
> 	       int *err) {
>   int fail;
>   struct stat filestat;
>   
>   if (lstat(file, &filestat) == -1) {
>     fprintf(stderr, "Error checking file: \"%s\"\n", file);
>     return;
>   } else {
>     if (recurse && S_ISDIR(filestat.st_mode)) {
>       DIR *dp;
>       struct dirent *dentry;
>       char *ptr;
>       int value = 0;
> 
>       if ((dp = opendir(file)) != NULL) {
> 	while ((dentry = readdir(dp)) != NULL) {
> 	  if ((strcmp(dentry->d_name, ".") == 0) ||
> 	      (strcmp(dentry->d_name, "..") == 0))
> 	    continue;
> 
> 	  ptr = malloc(strlen(file) + 1 + 
> 		       strlen(dentry->d_name) + 1);
> 
> 	  if (ptr == NULL) {
> 	    fprintf(stderr, "Out of memory\n");
> 	    exit(1);
> 	  }
> 
> 	  sprintf(ptr, "%s/%s", file, dentry->d_name);
> 		
> 	  print_sum(ptr, recurse, binary, bin_buffer, 
> 		    DIGEST_STREAM(algorithm), err);
> 
> 	  free(ptr);
> 	}
> 
> 	closedir(dp);
> 
> 	return;
>       } else {
> 	fprintf(stderr, "Errer opening directory %s", file);
> 	return;
>       }
>     } else {
> 
>       fail = digest_file (file, binary, bin_buffer,
> 			  DIGEST_STREAM (algorithm));
>       *err |= fail;
>       if (!fail)
> 	{
> 	  size_t i;
> 	  
> 	  /* Output a leading backslash if the file name contains
> 	     a newline or backslash.  */
> 	  if (strchr (file, '\n') || strchr (file, '\\'))
> 	    putchar ('\\');
> 
> 	  for (i = 0; i < (digest_hex_bytes / 2); ++i)
> 	    printf ("%02x", bin_buffer[i]);
> 	  
> 	  putchar (' ');
> 	  if (binary)
> 	    putchar ('*');
> 	  else
> 	    putchar (' ');
> 
> 	  /* Translate each NEWLINE byte to the string, "\\n",
> 	     and each backslash to "\\\\".  */
> 	  for (i = 0; i < strlen (file); ++i)
> 	    {
> 	      switch (file[i])
> 		{
> 		case '\n':
> 		  fputs ("\\n", stdout);
> 		  break;
> 		  
> 		case '\\':
> 		  fputs ("\\\\", stdout);
> 		  break;
> 		  
> 		default:
> 		  putchar (file[i]);
> 		  break;
> 		}
> 	    }
> 	  putchar ('\n');
> 	}
>     }
>   }
> }
> 
487a585
>   int recursive = 0;
506c604
<   while ((opt = getopt_long (argc, argv, "bctw", long_options, NULL)) != -1)
---
>   while ((opt = getopt_long (argc, argv, "brctw", long_options, NULL)) != -1)
524a623,625
>       case 'r':
> 	recursive = 1;
> 	break;
622,663c723,724
< 	  fail = digest_file (file, binary, bin_buffer,
< 			      DIGEST_STREAM (algorithm));
< 	  err |= fail;
< 	  if (!fail)
< 	    {
< 	      size_t i;
< 
< 	      /* Output a leading backslash if the file name contains
< 		 a newline or backslash.  */
< 	      if (strchr (file, '\n') || strchr (file, '\\'))
< 		putchar ('\\');
< 
< 	      for (i = 0; i < (digest_hex_bytes / 2); ++i)
< 		printf ("%02x", bin_buffer[i]);
< 
< 	      putchar (' ');
< 	      if (binary)
< 		putchar ('*');
< 	      else
< 		putchar (' ');
< 
< 	      /* Translate each NEWLINE byte to the string, "\\n",
< 		 and each backslash to "\\\\".  */
< 	      for (i = 0; i < strlen (file); ++i)
< 		{
< 		  switch (file[i])
< 		    {
< 		    case '\n':
< 		      fputs ("\\n", stdout);
< 		      break;
< 
< 		    case '\\':
< 		      fputs ("\\\\", stdout);
< 		      break;
< 
< 		    default:
< 		      putchar (file[i]);
< 		      break;
< 		    }
< 		}
< 	      putchar ('\n');
< 	    }
---
> 	  print_sum(file, recursive, binary, bin_buffer, 
> 		    DIGEST_STREAM(algorithm), &err);