lib/rio/ops/file.rb in rio-0.3.7 vs lib/rio/ops/file.rb in rio-0.3.8

@@ -1,8 +1,8 @@
 #--
 # =============================================================================== 
-# Copyright (c) 2005, Christopher Kleckner
+# Copyright (c) 2005, 2006 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
@@ -20,11 +20,11 @@
 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 # =============================================================================== 
 #++
 #
 # To create the documentation for Rio run the command
-#  rake rdoc
+#  ruby build_doc.rb
 # from the distribution directory. Then point your browser at the 'doc/rdoc' directory.
 #
 # Suggested Reading
 # * RIO::Doc::SYNOPSIS
 # * RIO::Doc::INTRO
@@ -37,29 +37,29 @@
 
 require 'rio/cp'
 require 'rio/piper/cp'
 require 'rio/ops/either'
 
+# module RIO
+#   module Impl
+#     module U
+#       def self.copy(s,d)
+#         require 'fileutils'
+#         ::FileUtils.cp(s.to_s,d.to_s)
+#       end
+#       def self.rm(s)
+#         require 'fileutils'
+#         ::FileUtils.rm(s.to_s)
+#       end
+#       def self.touch(s)
+#         require 'fileutils'
+#         ::FileUtils.touch(s.to_s)
+#       end
+#     end
+#   end
+# end
 module RIO
-  module Impl
-    module U
-      def self.copy(s,d)
-        require 'fileutils'
-        ::FileUtils.cp(s.to_s,d.to_s)
-      end
-      def self.rm(s)
-        require 'fileutils'
-        ::FileUtils.rm(s.to_s)
-      end
-      def self.touch(s)
-        require 'fileutils'
-        ::FileUtils.touch(s.to_s)
-      end
-    end
-  end
-end
-module RIO
   module Ops
     module File
       module ExistOrNot
         include FileOrDir::ExistOrNot
        end
@@ -71,27 +71,31 @@
         include Piper::Cp::Input
 
         def selective?
           %w[stream_sel stream_nosel].any? { |k| cx.has_key?(k) }
         end
+        def empty?() 
+          self.selective? ? self.to_a.empty? : self.size == 0 
+        end
         def rm(*args) 
           rtn_reset { 
-            Impl::U.rm(self,*args) 
+            fs.rm(self,*args) 
           } 
         end
         alias :delete :rm
         alias :delete! :rm
-
-        def touch(*args) rtn_self { Impl::U.touch(self,*args) } end
+        def touch(*args) rtn_self { fs.touch(self.to_s,*args) } end
+        def truncate(sz=0) rtn_reset { fs.truncate(self.to_s,sz) } end
+        def clear() truncate(0) end
       end
       module NonExisting
         include ExistOrNot
         include FileOrDir::NonExisting
 
         def rm(*args) rtn_self { ; } end
         alias delete rm
         alias delete! rm
-        def touch(*args) rtn_reset { Impl::U.touch(self,*args) } end
+        def touch(*args) rtn_reset { fs.touch(self,*args) } end
       end
     end
   end
 end