1 files changed, 144 insertions, 0 deletions
diff --git a/jni/ruby/lib/rake/file_utils_ext.rb b/jni/ruby/lib/rake/file_utils_ext.rb
new file mode 100644
index 0000000..309159a
--- /dev/null
+++ b/jni/ruby/lib/rake/file_utils_ext.rb
@@ -0,0 +1,144 @@
+require 'rake/file_utils'
+
+module Rake
+  #
+  # FileUtilsExt provides a custom version of the FileUtils methods
+  # that respond to the <tt>verbose</tt> and <tt>nowrite</tt>
+  # commands.
+  #
+  module FileUtilsExt
+    include FileUtils
+
+    class << self
+      attr_accessor :verbose_flag, :nowrite_flag
+    end
+
+    DEFAULT = Object.new
+
+    FileUtilsExt.verbose_flag = DEFAULT
+    FileUtilsExt.nowrite_flag = false
+
+    FileUtils.commands.each do |name|
+      opts = FileUtils.options_of name
+      default_options = []
+      if opts.include?("verbose")
+        default_options << ':verbose => FileUtilsExt.verbose_flag'
+      end
+      if opts.include?("noop")
+        default_options << ':noop => FileUtilsExt.nowrite_flag'
+      end
+
+      next if default_options.empty?
+      module_eval(<<-EOS, __FILE__, __LINE__ + 1)
+      def #{name}( *args, &block )
+        super(
+          *rake_merge_option(args,
+            #{default_options.join(', ')}
+            ), &block)
+      end
+      EOS
+    end
+
+    # Get/set the verbose flag controlling output from the FileUtils
+    # utilities.  If verbose is true, then the utility method is
+    # echoed to standard output.
+    #
+    # Examples:
+    #    verbose              # return the current value of the
+    #                         # verbose flag
+    #    verbose(v)           # set the verbose flag to _v_.
+    #    verbose(v) { code }  # Execute code with the verbose flag set
+    #                         # temporarily to _v_.  Return to the
+    #                         # original value when code is done.
+    def verbose(value=nil)
+      oldvalue = FileUtilsExt.verbose_flag
+      FileUtilsExt.verbose_flag = value unless value.nil?
+      if block_given?
+        begin
+          yield
+        ensure
+          FileUtilsExt.verbose_flag = oldvalue
+        end
+      end
+      FileUtilsExt.verbose_flag
+    end
+
+    # Get/set the nowrite flag controlling output from the FileUtils
+    # utilities.  If verbose is true, then the utility method is
+    # echoed to standard output.
+    #
+    # Examples:
+    #    nowrite              # return the current value of the
+    #                         # nowrite flag
+    #    nowrite(v)           # set the nowrite flag to _v_.
+    #    nowrite(v) { code }  # Execute code with the nowrite flag set
+    #                         # temporarily to _v_. Return to the
+    #                         # original value when code is done.
+    def nowrite(value=nil)
+      oldvalue = FileUtilsExt.nowrite_flag
+      FileUtilsExt.nowrite_flag = value unless value.nil?
+      if block_given?
+        begin
+          yield
+        ensure
+          FileUtilsExt.nowrite_flag = oldvalue
+        end
+      end
+      oldvalue
+    end
+
+    # Use this function to prevent potentially destructive ruby code
+    # from running when the :nowrite flag is set.
+    #
+    # Example:
+    #
+    #   when_writing("Building Project") do
+    #     project.build
+    #   end
+    #
+    # The following code will build the project under normal
+    # conditions. If the nowrite(true) flag is set, then the example
+    # will print:
+    #
+    #      DRYRUN: Building Project
+    #
+    # instead of actually building the project.
+    #
+    def when_writing(msg=nil)
+      if FileUtilsExt.nowrite_flag
+        $stderr.puts "DRYRUN: #{msg}" if msg
+      else
+        yield
+      end
+    end
+
+    # Merge the given options with the default values.
+    def rake_merge_option(args, defaults)
+      if Hash === args.last
+        defaults.update(args.last)
+        args.pop
+      end
+      args.push defaults
+      args
+    end
+
+    # Send the message to the default rake output (which is $stderr).
+    def rake_output_message(message)
+      $stderr.puts(message)
+    end
+
+    # Check that the options do not contain options not listed in
+    # +optdecl+.  An ArgumentError exception is thrown if non-declared
+    # options are found.
+    def rake_check_options(options, *optdecl)
+      h = options.dup
+      optdecl.each do |name|
+        h.delete name
+      end
+      raise ArgumentError, "no such option: #{h.keys.join(' ')}" unless
+        h.empty?
+    end
+
+    extend self
+  end
+end