add --slient/--quiet options, work properly if no args

@@ -3,23 +3,48 @@
 #include <stdio.h>
 #include <argp.h>
 
+static int messages_count (char *);
+
 const char *argp_program_version = "messages (" PACKAGE ") " VERSION;
 const char *argp_program_bug_address = "<bug-mailutils@gnu.org>";
 static char doc[] = "GNU messages -- count the number of messages in a mailbox";
 static char args_doc[] = "[mailbox...]";
 
 static struct argp_option options[] = {
+  {"quiet",	'q',	0,	0,	"Only display number of messages"},
+  {"silent",	's',	0,	0,	"Same as -q"},
   { 0 }
 };
 
 struct arguments
 {
-  char **args;
+  int argc;
+  char **argv;
 };
 
+/* are we loud or quiet? */
+static int silent = 0;
+
 static error_t
 parse_opt (int key, char *arg, struct argp_state *state)
 {
+  struct arguments *args = state->input;
+  switch (key)
+    {
+    case 'q':
+    case 's':
+      silent = 1;
+      break;
+    case ARGP_KEY_ARG:
+      args->argv = realloc (args->argv,
+			    sizeof (char *) * (state->arg_num + 2));
+      args->argv[state->arg_num] = arg;
+      args->argv[state->arg_num + 1] = NULL;
+      args->argc++;
+      break;
+    default:
+      return ARGP_ERR_UNKNOWN;
+    }
   return 0;
 }
 
@@ -30,49 +55,58 @@ main (int argc, char **argv)
 {
   int i = 1;
   list_t bookie;
-  mailbox_t mbox;
-  int count;
   int err = 0;
-  struct arguments args;
-  args.args = NULL;
+  struct arguments args = {0, NULL};
 
   argp_parse (&argp, argc, argv, 0, 0, &args);
 
   registrar_get_list (&bookie);
   list_append (bookie, path_record);
 
-  /* FIXME: if argc < 2, check on $MAIL and exit */
-
-  for (i=1; i < argc; i++)
+  if (args.argc < 1 && messages_count (getenv("MAIL")) < 0)
+      err = 1;
+  else if (args.argc >= 1)
     {
-      if (mailbox_create_default (&mbox, argv[i]) != 0)
-	{
-	  fprintf (stderr, "Couldn't create mailbox %s.\n", argv[i]);
-	  err = 1;
-	  continue;
-	}
-      if (mailbox_open (mbox, MU_STREAM_READ) != 0)
-	{
-	  fprintf (stderr, "Couldn't open mailbox %s.\n", argv[i]);
-	  err = 1;
-	  continue;
-	}
-      if (mailbox_messages_count (mbox, &count) != 0)
-	{
-	  fprintf (stderr, "Couldn't count messages in %s.\n", argv[i]);
+      for (i=0; i < args.argc; i++)
+	if (messages_count (args.argv[i]) < 0)
 	  err = 1;
-	  continue;
-	}
+    }
 
-      printf ("Number of messages in %s: %d\n", argv[i], count);
+  return err;
+}
 
-      if (mailbox_close (mbox) != 0)
-	{
-	  fprintf (stderr, "Couldn't close %s.\n", argv[i]);
-	  err = 1;
-	  continue;
-	}
-      mailbox_destroy (&mbox);
+static int
+messages_count (char *box)
+{
+  mailbox_t mbox;
+  int count;
+
+  if (mailbox_create_default (&mbox, box) != 0)
+    {
+      fprintf (stderr, "Couldn't create mailbox %s.\n", box);
+      return -1;
     }
-  return 0;
+  if (mailbox_open (mbox, MU_STREAM_READ) != 0)
+    {
+      fprintf (stderr, "Couldn't open mailbox %s.\n", box);
+      return -1;
+    }
+  if (mailbox_messages_count (mbox, &count) != 0)
+    {
+      fprintf (stderr, "Couldn't count messages in %s.\n", box);
+      return -1;
+    }
+  
+  if (silent)
+    printf ("%d\n", count);
+  else
+    printf ("Number of messages in %s: %d\n", box, count);
+  
+  if (mailbox_close (mbox) != 0)
+    {
+      fprintf (stderr, "Couldn't close %s.\n", box);
+      return -1;
+    }
+  mailbox_destroy (&mbox);
+  return count;
 }