Allow parameter to specify seconds to wait.

example/cdchange.c

@@ -1,5 +1,5 @@
 /*
-  $Id: cdchange.c,v 1.1 2006/01/24 00:15:33 rocky Exp $
+  $Id: cdchange.c,v 1.2 2006/01/24 00:53:19 rocky Exp $
 
   Copyright (C) 2005, 2006 Rocky Bernstein <rocky@panix.com>
   
@@ -23,29 +23,56 @@
 # include "config.h"
 #endif
 #include <stdio.h>
+
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+
+#ifdef HAVE_STRING_H
+# include <string.h>
+#endif
+
+#ifdef HAVE_ERRNO_H
+# include <errno.h>
+#endif 
+
+#ifdef HAVE_SYS_TYPES_H
 # include <sys/types.h>
+#endif
+
 #include <cdio/cdio.h>
 int
 main(int argc, const char *argv[])
 {
   CdIo_t *p_cdio;
+  unsigned long i_sleep=30;
 
-  if (argc > 1)
+  if (argc > 1) {
     p_cdio = cdio_open (argv[1], DRIVER_DEVICE);
-  else {
+    if (argc > 2) {
+      i_sleep = strtol(argv[2], (char **)NULL, 10);
+      if (errno != 0) {
+	printf("Invalid sleep parameter %s\n", argv[2]);
+	printf("Error reported back from strtol: %s\n", strerror(errno));
+	return 2;
+      }
+    }
+  } else {
     p_cdio = cdio_open (NULL, DRIVER_DEVICE);
+  }
+
   if (NULL == p_cdio) {
     printf("Couldn't find a driver.. leaving.\n");
     return 1;
   }
-  }
 
   if (cdio_get_media_changed(p_cdio))
     printf("Initial media status: changed\n");
   else 
     printf("Initial media status: not changed\n");
 
-  printf("Giving you 30 seconds to change CD if you want to do so.\n");
+  printf("Giving you %lu seconds to change CD if you want to do so.\n",
+	 i_sleep);
   sleep(30);
   if (cdio_get_media_changed(p_cdio))
     printf("Media status: changed\n");