add gem tasks to Rakefile

- rake gemspec
  generates open_id_authentication.gemspec to build gem in GitHub
- rake package
  build gem in pkg/open_id_authentication-VERSION.gem
- rake debug_gem
  show gemspec to be generated.

Rakefile

@@ -1,6 +1,8 @@
 require 'rake'
 require 'rake/testtask'
 require 'rake/rdoctask'
+require 'rake/packagetask'
+require 'rake/gempackagetask'
 
 desc 'Default: run unit tests.'
 task :default => :test
@@ -20,3 +22,64 @@ Rake::RDocTask.new(:rdoc) do |rdoc|
   rdoc.rdoc_files.include('README')
   rdoc.rdoc_files.include('lib/**/*.rb')
 end
+
+NAME = ENV["GEMNAME"] || "open_id_authentication"
+DESCRIPTION = "Provides a thin wrapper around the excellent ruby-openid gem from JanRan. gem version is unofficial, github fork of rails's by moro"
+AUTHOR = "David Heinemeier Hansson"
+EMAIL  = ""
+HOMEPAGE = "http//github.com/rails/open_id_authentication"
+
+RDOC_OPTS = [
+  '--title', "#{NAME} documentation",
+  "--charset", "utf-8",
+  "--opname", "index.html",
+  "--line-numbers",
+  "--main", "README",
+  "--inline-source",
+]
+
+spec = Gem::Specification.new do |s|
+  s.name              = NAME
+  s.version           = "1.0.0"
+  s.platform          = Gem::Platform::RUBY
+  s.has_rdoc          = true
+  s.extra_rdoc_files  = ["README", "CHANGElOG"]
+  s.rdoc_options     += RDOC_OPTS + ['--exclude', '^(examples|extras)/']
+  s.summary           = DESCRIPTION
+  s.description       = DESCRIPTION
+  s.author            = AUTHOR
+  s.email             = EMAIL
+  s.homepage          = HOMEPAGE
+  s.executables       = []
+  s.require_path      = "lib"
+  s.test_files        = Dir["test/*_test.rb"]
+
+  s.add_dependency("ruby-openid", ">=2.0.4")
+  #s.add_dependency('activesupport', '>=1.3.1')
+  #s.required_ruby_version = '>= 1.8.2'
+
+  s.files = %w(README CHANGElOG Rakefile) +
+    Dir.glob("{bin,doc,test,lib,templates,generators,extras,website,script}/**/*") +
+    Dir.glob("ext/**/*.{h,c,rb}") +
+    Dir.glob("examples/**/*.rb") +
+    Dir.glob("tools/*.rb") +
+    Dir.glob("rails/*.rb")
+
+  s.extensions = FileList["ext/**/extconf.rb"].to_a
+end
+
+Rake::GemPackageTask.new(spec) do |p|
+  p.need_tar = true
+  p.gem_spec = spec
+end
+
+desc 'Show information about the gem.'
+task :debug_gem do
+  puts spec.to_ruby
+end
+
+desc 'Update gem spec'
+task :gemspec do
+  open("#{NAME}.gemspec", 'w').write spec.to_ruby
+end
+

init.rb

@@ -1,18 +1,3 @@
-if config.respond_to?(:gems)
-  config.gem 'ruby-openid', :lib => 'openid', :version => '>=2.0.4'
-else
-  begin
-    require 'openid'
-  rescue LoadError
-    begin
-      gem 'ruby-openid', '>=2.0.4'
-    rescue Gem::LoadError
-      puts "Install the ruby-openid gem to enable OpenID support"
-    end
-  end
-end
+#!/usr/bin/env ruby
 
-config.to_prepare do
-  OpenID::Util.logger = Rails.logger
-  ActionController::Base.send :include, OpenIdAuthentication
-end
+load File.expand_path('rails/init.rb', File.dirname(__FILE__))

open_id_authentication.gemspec

@@ -0,0 +1,34 @@
+# -*- encoding: utf-8 -*-
+
+Gem::Specification.new do |s|
+  s.name = %q{open_id_authentication}
+  s.version = "1.0.0"
+
+  s.required_rubygems_version = Gem::Requirement.new(">= 0") if s.respond_to? :required_rubygems_version=
+  s.authors = ["David Heinemeier Hansson"]
+  s.date = %q{2009-03-25}
+  s.description = %q{Provides a thin wrapper around the excellent ruby-openid gem from JanRan. gem version is unofficial, github fork of rails's by moro}
+  s.email = %q{}
+  s.extra_rdoc_files = ["README", "CHANGElOG"]
+  s.files = ["README", "CHANGElOG", "Rakefile", "test/mem_cache_store_test.rb", "test/normalize_test.rb", "test/open_id_authentication_test.rb", "test/status_test.rb", "test/test_helper.rb", "lib/open_id_authentication", "lib/open_id_authentication/association.rb", "lib/open_id_authentication/db_store.rb", "lib/open_id_authentication/mem_cache_store.rb", "lib/open_id_authentication/nonce.rb", "lib/open_id_authentication/request.rb", "lib/open_id_authentication/timeout_fixes.rb", "lib/open_id_authentication.rb", "generators/open_id_authentication_tables", "generators/open_id_authentication_tables/open_id_authentication_tables_generator.rb", "generators/open_id_authentication_tables/templates", "generators/open_id_authentication_tables/templates/migration.rb", "generators/upgrade_open_id_authentication_tables", "generators/upgrade_open_id_authentication_tables/templates", "generators/upgrade_open_id_authentication_tables/templates/migration.rb", "generators/upgrade_open_id_authentication_tables/upgrade_open_id_authentication_tables_generator.rb", "rails/init.rb"]
+  s.has_rdoc = true
+  s.homepage = %q{http//github.com/rails/open_id_authentication}
+  s.rdoc_options = ["--title", "open_id_authentication documentation", "--charset", "utf-8", "--opname", "index.html", "--line-numbers", "--main", "README", "--inline-source", "--exclude", "^(examples|extras)/"]
+  s.require_paths = ["lib"]
+  s.rubygems_version = %q{1.3.1}
+  s.summary = %q{Provides a thin wrapper around the excellent ruby-openid gem from JanRan. gem version is unofficial, github fork of rails's by moro}
+  s.test_files = ["test/mem_cache_store_test.rb", "test/normalize_test.rb", "test/open_id_authentication_test.rb", "test/status_test.rb"]
+
+  if s.respond_to? :specification_version then
+    current_version = Gem::Specification::CURRENT_SPECIFICATION_VERSION
+    s.specification_version = 2
+
+    if Gem::Version.new(Gem::RubyGemsVersion) >= Gem::Version.new('1.2.0') then
+      s.add_runtime_dependency(%q<ruby-openid>, [">= 2.0.4"])
+    else
+      s.add_dependency(%q<ruby-openid>, [">= 2.0.4"])
+    end
+  else
+    s.add_dependency(%q<ruby-openid>, [">= 2.0.4"])
+  end
+end

rails/init.rb

@@ -0,0 +1,18 @@
+if config.respond_to?(:gems)
+  config.gem 'ruby-openid', :lib => 'openid', :version => '>=2.0.4'
+else
+  begin
+    require 'openid'
+  rescue LoadError
+    begin
+      gem 'ruby-openid', '>=2.0.4'
+    rescue Gem::LoadError
+      puts "Install the ruby-openid gem to enable OpenID support"
+    end
+  end
+end
+
+config.to_prepare do
+  OpenID::Util.logger = Rails.logger
+  ActionController::Base.send :include, OpenIdAuthentication
+end