1 files changed, 46 insertions, 0 deletions
diff --git a/jni/ruby/lib/rake/file_task.rb b/jni/ruby/lib/rake/file_task.rb
new file mode 100644
index 0000000..4c9b040
--- /dev/null
+++ b/jni/ruby/lib/rake/file_task.rb
@@ -0,0 +1,46 @@
+require 'rake/task.rb'
+require 'rake/early_time'
+
+module Rake
+
+  # A FileTask is a task that includes time based dependencies.  If any of a
+  # FileTask's prerequisites have a timestamp that is later than the file
+  # represented by this task, then the file must be rebuilt (using the
+  # supplied actions).
+  #
+  class FileTask < Task
+
+    # Is this file task needed?  Yes if it doesn't exist, or if its time stamp
+    # is out of date.
+    def needed?
+      ! File.exist?(name) || out_of_date?(timestamp) || @application.options.build_all
+    end
+
+    # Time stamp for file task.
+    def timestamp
+      if File.exist?(name)
+        File.mtime(name.to_s)
+      else
+        Rake::LATE
+      end
+    end
+
+    private
+
+    # Are there any prerequisites with a later time than the given time stamp?
+    def out_of_date?(stamp)
+      @prerequisites.any? { |n| application[n, @scope].timestamp > stamp }
+    end
+
+    # ----------------------------------------------------------------
+    # Task class methods.
+    #
+    class << self
+      # Apply the scope to the task name according to the rules for this kind
+      # of task.  File based tasks ignore the scope when creating the name.
+      def scope_name(scope, task_name)
+        Rake.from_pathname(task_name)
+      end
+    end
+  end
+end