Add release management rake tasks.

Rakefile

@@ -1,7 +1,9 @@
+require 'ffi'
 require 'rake/extensiontask'
 require 'rake/testtask'
+require 'rake/version_task'
 require 'rubygems/package_task'
-require 'ffi'
+require 'rubygems/gem_runner'
 
 def gemspec
   @gemspec ||= Gem::Specification.load('process_shared.gemspec')
@@ -23,9 +25,28 @@ Rake::TestTask.new(:test => [:compile]) do |t|
   t.libs.push 'spec'
 end
 
-Gem::PackageTask.new(gemspec) do |p|
+pkg = Gem::PackageTask.new(gemspec) do |p|
   p.need_tar = true
   p.gem_spec = gemspec
 end
 
 task :gem => :compile
+
+Rake::VersionTask.new do |t|
+  t.with_git_tag = true
+end
+
+task :push => :gem do
+  gem_file = File.basename gemspec.cache_file
+  gem_path = File.join pkg.package_dir, gem_file
+  Gem::GemRunner.new.run(["push", gem_path])
+end
+
+if Version.current.prerelease?
+  vrelease = Version.current.bump!
+  desc "Release version #{vrelease}"
+  task :release => [:test, 'version:bump'] do
+    # must run in subprocess so tasks use newwer versioned gemspec
+    sh %{rake push version:bump:pre}
+  end
+end

process_shared.gemspec

@@ -1,6 +1,6 @@
 Gem::Specification.new do |s|
   s.name = 'process_shared'
-  s.version = '0.1.1'
+  s.version = File.read(File.expand_path('../VERSION', __FILE__))
   s.platform = Gem::Platform::RUBY
   s.has_rdoc = true
   s.extra_rdoc_files = ["README.rdoc", "ChangeLog", "COPYING"]
@@ -18,4 +18,5 @@ Gem::Specification.new do |s|
   s.add_development_dependency('rake-compiler')
   s.add_development_dependency('minitest')
   s.add_development_dependency('minitest-matchers')
+  s.add_development_dependency('version')
 end