added tag v1_9_0_4

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 40 insertions, 0 deletions

diff --git a/trunk/lib/rake/loaders/makefile.rb b/trunk/lib/rake/loaders/makefile.rb
new file mode 100644
index 0000000000..f66eb3b35f
--- /dev/null
+++ b/trunk/lib/rake/loaders/makefile.rb
@@ -0,0 +1,40 @@
+#!/usr/bin/env ruby
+
+module Rake
+
+  # Makefile loader to be used with the import file loader.
+  class MakefileLoader
+
+    # Load the makefile dependencies in +fn+.
+    def load(fn)
+      buffer = ''
+      open(fn) do |mf|
+        mf.each do |line|
+          next if line =~ /^\s*#/
+          buffer << line
+          if buffer =~ /\\$/
+            buffer.sub!(/\\\n/, ' ')
+            state = :append
+          else
+            process_line(buffer)
+            buffer = ''
+          end
+        end
+      end
+      process_line(buffer) if buffer != ''
+    end
+
+    private
+
+    # Process one logical line of makefile data.
+    def process_line(line)
+      file_task, args = line.split(':')
+      return if args.nil?
+      dependents = args.split
+      file file_task => dependents
+    end
+  end
+
+  # Install the handler
+  Rake.application.add_loader('mf', MakefileLoader.new)
+end