svn commit: r917116 - /buildr/trunk/addon/buildr/cc.rb

[dj...@apache.org]

Author: djspiewak
Date: Sun Feb 28 04:36:23 2010
New Revision: 917116

URL: http://svn.apache.org/viewvc?rev=917116&view=rev
Log:
Added prototype continuous compilation task

Added:
    buildr/trunk/addon/buildr/cc.rb

Added: buildr/trunk/addon/buildr/cc.rb
URL: http://svn.apache.org/viewvc/buildr/trunk/addon/buildr/cc.rb?rev=917116&view=auto
==============================================================================
--- buildr/trunk/addon/buildr/cc.rb (added)
+++ buildr/trunk/addon/buildr/cc.rb Sun Feb 28 04:36:23 2010
@@ -0,0 +1,67 @@
+module Buildr
+  module CC
+    include Extension
+    
+    class << self
+      def check_mtime(dirs, ext, old_times)
+        times = old_times
+        changed = []
+        
+        dirs.each do |dir|
+          Dir.glob "#{dir}/**/*.{#{ext.join ','}}" do |fname|
+            if old_times[fname].nil? || old_times[fname] < File.mtime(fname)
+              times[fname] = File.mtime fname
+              changed << fname
+            end
+          end
+        end
+        
+        [times, changed]
+      end
+      
+      def strip_filename(project, name)
+        name.gsub project.base_dir + File::SEPARATOR, ''
+      end
+    end
+    
+    first_time do
+      Project.local_task :cc
+    end
+    
+    before_define do |project|
+      project.task :cc => :compile do
+        dirs = project.compile.sources.map(&:to_s)
+        ext = Buildr::Compiler.select(project.compile.compiler).source_ext.map(&:to_s)
+        times, _ = Buildr::CC.check_mtime dirs, ext, {}     # establish baseline
+        
+        dir_names = dirs.map { |file| Buildr::CC.strip_filename project, file }
+        if dirs.length == 1
+          info "Monitoring directory: #{dir_names.first}"
+        else
+          info "Monitoring directories: [#{dir_names.join ', '}]"
+        end
+        trace "Monitoring extensions: [#{ext.join ', '}]"
+        
+        while true
+          sleep 0.2
+          
+          times, changed = Buildr::CC.check_mtime dirs, ext, times
+          unless changed.empty?
+            info ''    # better spacing
+            
+            changed.each do |file|
+              info "Detected changes in #{Buildr::CC.strip_filename project, file}"
+            end
+            
+            project.task(:compile).reenable
+            project.task(:compile).invoke
+          end
+        end
+      end
+    end
+  end
+  
+  class Project
+    include CC
+  end
+end