Merge pull request #60 from stereobooster/master

Windows support!

Gemfile

@@ -13,5 +13,6 @@ if Config::CONFIG['target_os'] =~ /linux/i
   gem 'libnotify',  '~> 0.1.3', :require => false
 end
 if Config::CONFIG['target_os'] =~ /mswin|mingw/i
-  gem 'win32console'
+  gem 'win32console', :require => false
+  gem 'rb-fchange', '>= 0.0.2', :require => false
 end

README.markdown

@@ -10,6 +10,7 @@ Features
 
 * [FSEvent](http://en.wikipedia.org/wiki/FSEvents) support on Mac OS X 10.5+ (without RubyCocoa!, [rb-fsevent gem, >= 0.3.5](https://rubygems.org/gems/rb-fsevent) required).
 * [Inotify](http://en.wikipedia.org/wiki/Inotify) support on Linux ([rb-inotify gem, >= 0.5.1](https://rubygems.org/gems/rb-inotify) required).
+* [Directory Change Notification](http://msdn.microsoft.com/en-us/library/aa365261\(VS.85\).aspx) suuport on Windows ([rb-fchange, >= 0.0.2](https://rubygems.org/gems/rb-fchange) required)
 * Polling on the other operating systems (help us to support more OS).
 * Automatic & Super fast (when polling is not used) files modifications detection (even new files are detected).
 * Growl notifications ([growlnotify](http://growl.info/documentation/growlnotify.php) & [growl gem](https://rubygems.org/gems/growl) required).
@@ -67,6 +68,13 @@ And add it to you Gemfile:
 gem 'libnotify'
 ```
 
+### On Windows
+
+Install the rb-fchange gem for [Directory Change Notification](http://msdn.microsoft.com/en-us/library/aa365261\(VS.85\).aspx) support:
+
+    $ gem install rb-fchange
+
+
 Usage
 -----
 

lib/guard/listener.rb

@@ -4,6 +4,7 @@ module Guard
 
   autoload :Darwin,  'guard/listeners/darwin'
   autoload :Linux,   'guard/listeners/linux'
+  autoload :Windows, 'guard/listeners/windows'
   autoload :Polling, 'guard/listeners/polling'
 
   class Listener
@@ -14,6 +15,8 @@ def self.select_and_init
         Darwin.new
       elsif linux? && Linux.usable?
         Linux.new
+      elsif windows? && Windows.usable?
+        Windows.new
       else
         UI.info "Using polling (Please help us to support your system better than that.)"
         Polling.new
@@ -54,6 +57,10 @@ def self.linux?
       Config::CONFIG['target_os'] =~ /linux/i
     end
 
+    def self.windows?
+      Config::CONFIG['target_os'] =~ /mswin|mingw/i
+    end
+
   end
 end
 

lib/guard/listeners/windows.rb

@@ -0,0 +1,36 @@
+module Guard
+  class Windows < Listener
+    attr_reader :fchange
+
+    def initialize
+      super
+      @fchange = FChange::Notifier.new
+    end
+
+    def on_change(&callback)
+      @fchange.watch(Dir.pwd, :all_events, :recursive) do |event|
+        paths = [File.expand_path(event.watcher.path) + '/']
+        files = modified_files(paths, {:all => true})
+        update_last_event
+        callback.call(files)
+      end
+    end
+
+    def start
+      @fchange.run
+    end
+
+    def stop
+      @fchange.stop
+    end
+
+    def self.usable?
+      require 'rb-fchange'
+      true
+    rescue LoadError
+      UI.info "Please install rb-fchange gem for Windows file events support"
+      false
+    end
+
+  end
+end

spec/guard/listener_spec.rb

@@ -14,10 +14,10 @@
       subject.select_and_init
     end
 
-    it "uses polling listener on Windows" do
-      Config::CONFIG['target_os'] = 'win32'
-      Guard::Polling.stub(:usable?).and_return(true)
-      Guard::Polling.should_receive(:new)
+    it "uses windows listener on Windows" do
+      Config::CONFIG['target_os'] = 'mingw'
+      Guard::Windows.stub(:usable?).and_return(true)
+      Guard::Windows.should_receive(:new)
       subject.select_and_init
     end
 

spec/guard/listeners/windows_spec.rb

@@ -0,0 +1,88 @@
+require 'spec_helper'
+require 'guard/listeners/windows'
+
+describe Guard::Windows do
+  subject { Guard::Windows }
+
+  if linux?
+    it "isn't usable on linux" do
+      subject.should_not be_usable
+    end
+  end
+
+  if mac?
+    it "isn't usable on Mac" do
+      subject.should_not be_usable
+    end
+  end
+
+  if windows?
+    it "is usable on Windows 2000 and later" do
+      subject.should be_usable
+    end
+
+    describe "#on_change" do
+      before(:each) do
+        @results = []
+        @listener = Guard::Windows.new
+        @listener.on_change do |files|
+          @results += files
+        end
+      end
+
+      it "catches new file" do
+        file = @fixture_path.join("newfile.rb")
+        if File.exists?(file)
+          begin
+            File.delete file
+          rescue
+          end
+        end
+        File.exists?(file).should be_false
+        start
+        FileUtils.touch file
+        stop
+        begin
+          File.delete file
+        rescue
+        end
+        @results.should == ['spec/fixtures/newfile.rb']
+      end
+
+      it "catches file update" do
+        file = @fixture_path.join("folder1/file1.txt")
+        File.exists?(file).should be_true
+        start
+        FileUtils.touch file
+        stop
+        @results.should == ['spec/fixtures/folder1/file1.txt']
+      end
+
+      it "catches files update" do
+        file1 = @fixture_path.join("folder1/file1.txt")
+        file2 = @fixture_path.join("folder1/folder2/file2.txt")
+        File.exists?(file1).should be_true
+        File.exists?(file2).should be_true
+        start
+        FileUtils.touch file1
+        FileUtils.touch file2
+        stop
+        @results.should == ['spec/fixtures/folder1/file1.txt', 'spec/fixtures/folder1/folder2/file2.txt']
+      end
+    end
+  end
+
+private
+
+  def start
+    sleep 0.6
+    Thread.new { @listener.start }
+    sleep 0.6
+  end
+
+  def stop
+    sleep 0.6
+    @listener.stop
+  end
+
+end

spec/support/platform_helper.rb

@@ -4,4 +4,8 @@ def mac?
 
 def linux?
   Config::CONFIG['target_os'] =~ /linux/i
+end
+
+def windows?
+  Config::CONFIG['target_os'] =~ /mswin|mingw/i
 end