Add SVN downloader. Closes #81.

lib/cocoapods/downloader.rb

 module Pod
   class Downloader
-    autoload :Git,       'cocoapods/downloader/git'
-    autoload :Mercurial, 'cocoapods/downloader/mercurial'
+    autoload :Git,        'cocoapods/downloader/git'
+    autoload :Mercurial,  'cocoapods/downloader/mercurial'
+    autoload :Subversion, 'cocoapods/downloader/subversion'
 
     extend Executable
 
@@ -11,6 +12,8 @@ module Pod
         Git.new(pod_root, url, options)
       elsif url = options.delete(:hg)
         Mercurial.new(pod_root, url, options)
+      elsif url = options.delete(:svn)
+        Subversion.new(pod_root, url, options)
       else
         raise "Unsupported download strategy `#{source.inspect}'."
       end

lib/cocoapods/downloader/subversion.rb

+module Pod
+  class Downloader
+    class Subversion < Downloader
+      executable :svn
+
+      def download
+        @pod_root.dirname.mkpath
+        if @options[:revision]
+          download_revision
+        else
+          download_head
+        end
+      end
+
+      def download_head
+        svn "checkout '#{@url}' '#{@pod_root}'"
+      end
+
+      def download_revision
+        svn "checkout '#{@url}' -r '#{@options[:revision]}' '#{@pod_root}'"
+      end
+
+      def clean(clean_paths = [])
+        super
+        @pod_root.glob('**/.svn').each(&:rmtree)
+      end
+    end
+  end
+end

spec/functional/downloader_spec.rb

@@ -56,7 +56,7 @@ describe "Pod::Downloader" do
 
     it "removes the .hg directory" do
       downloader = Pod::Downloader.for_source(@dir,
-        :hg => fixture('mercurial-repo'), :revision => '46198bb3af96'
+        :hg => fixture('mercurial-repo')
       )
       downloader.download
       downloader.clean
@@ -65,13 +65,50 @@ describe "Pod::Downloader" do
 
     it "removes the clean_paths files and directories" do
       downloader = Pod::Downloader.for_source(@dir,
-        :hg => fixture('mercurial-repo'), :revision => '46198bb3af96'
+        :hg => fixture('mercurial-repo')
       )
       downloader.download
       downloader.clean([@dir + 'README'])
       (@dir + 'README').should.not.exist
     end
+  end
+
+  describe "for Subversion" do
+    extend SpecHelper::TemporaryDirectory
+
+    it "check's out a specific revision" do
+      downloader = Pod::Downloader.for_source(@dir,
+        :svn => "file://#{fixture('subversion-repo')}", :revision => '1'
+      )
+      downloader.download
+      (@dir + 'README').read.strip.should == 'first commit'
+    end
 
+    it "check's out a specific tag" do
+      downloader = Pod::Downloader.for_source(@dir,
+        :svn => "file://#{fixture('subversion-repo')}/tags/tag-1"
+      )
+      downloader.download
+      (@dir + 'README').read.strip.should == 'tag 1'
+    end
+
+    it "removes the .svn directories" do
+      downloader = Pod::Downloader.for_source(@dir,
+        :svn => "file://#{fixture('subversion-repo')}/trunk"
+      )
+      downloader.download
+      downloader.clean
+      (@dir + '.svn').should.not.exist
+    end
+
+    it "removes the clean_paths files and directories" do
+      downloader = Pod::Downloader.for_source(@dir,
+        :svn => "file://#{fixture('subversion-repo')}/trunk"
+      )
+      downloader.download
+      downloader.clean([@dir + 'README'])
+      (@dir + 'README').should.not.exist
+    end
   end
 
 end