[#436] Adapt rake task to also clean trailing whitespace

lib/tasks/code.rake

@@ -1,27 +1,33 @@
 #-- copyright
 # ChiliProject is a project management system.
-# 
+#
 # Copyright (C) 2010-2011 the ChiliProject Team
-# 
+#
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
 # as published by the Free Software Foundation; either version 2
 # of the License, or (at your option) any later version.
-# 
+#
 # See doc/COPYRIGHT.rdoc for more details.
 #++
 
 namespace :code do
   desc "Fix line endings of all source files"
   task :fix_line_endings do
-    unless `which fromdos`.present?
-      raise "fromdos command not found"
-    end
-    
-    Dir['**/**{.rb,.html.erb,.rhtml,.rjs,.rsb,.plain.erb,.rxml,.yml,.rake,.eml}'].each do |file_name|
-      next if file_name.include?("vendor")
-      system("fromdos #{file_name}")
+    Dir.chdir(File.join(File.dirname(__FILE__), "../..")) do
+      files = Dir['**/**{.rb,.html.erb,.rhtml,.rjs,.rsb,.plain.erb,.rxml,.yml,.rake,.eml}']
+      files.reject!{ |f|
+        f.include?("vendor") ||
+        f.include?("lib/SVG") ||
+        f.include?("lib/faster_csv") ||
+        f.include?("lib/redcloth") ||
+        f.include?("lib/diff")
+      }
+
+      # handle files in chunks of 50 to avoid too long command lines
+      while (slice = files.slice!(0, 50)).present?
+        system('ruby', '-i', '-pe', 'gsub(/\s+$/,"\n")', *slice)
+      end
     end
-    
   end
 end