prompt.rb in rio-0.3.9

- old
+ new

@@ -1,8 +1,8 @@
 #--
 # =============================================================================== 
-# Copyright (c) 2005, 2006 Christopher Kleckner
+# Copyright (c) 2005,2006,2007 Christopher Kleckner
 # All rights reserved
 #
 # This file is part of the Rio library for ruby.
 #
 # Rio is free software; you can redistribute it and/or modify
@@ -21,29 +21,34 @@
 # =============================================================================== 
 #++
 #
 # To create the documentation for Rio run the command
 #  ruby build_doc.rb
-# from the distribution directory. Then point your browser at the 'doc/rdoc' directory.
+# from the distribution directory.
 #
 # Suggested Reading
 # * RIO::Doc::SYNOPSIS
 # * RIO::Doc::INTRO
 # * RIO::Doc::HOWTO
+# * RIO::Doc::EXAMPLES
 # * RIO::Rio
 #
-# <b>Rio is pre-alpha software. 
-# The documented interface and behavior is subject to change without notice.</b>
 
 #
 
 require 'rio'
 
 module RIO
   def prompt(str="")
     rio(?-).strip.print(str).gets
   end
-  module_function :prompt
+  def promptd(str="",default=nil)
+    dstr = default ? "[#{default}]: " : ": "
+    pstr = str + dstr
+    ans = prompt(pstr)
+    ans.empty? ? default : ans
+  end
+  module_function :prompt,:promptd
 end
 
 if $0 == __FILE__
   eval DATA.read, nil, $0, __LINE__+4
 end