rake task to generate github gemspec

Rakefile

@@ -2,6 +2,61 @@ require 'rake'
 require "rake/rdoctask"
 require 'spec/rake/spectask'
 
+
+spec = Gem::Specification.new do |s|
+  s.name = "couchrest"
+  s.version = "0.9.4"
+  s.date = "2008-09-11"
+  s.summary = "Lean and RESTful interface to CouchDB."
+  s.email = "jchris@grabb.it"
+  s.homepage = "http://github.com/jchris/couchrest"
+  s.description = "CouchRest provides a simple interface on top of CouchDB's RESTful HTTP API, as well as including some utility scripts for managing views and attachments."
+  s.has_rdoc = true
+  s.authors = ["J. Chris Anderson"]
+  s.files = %w( LICENSE README.rdoc Rakefile THANKS ) + Dir["{bin,examples,lib,spec,utils}/**/*"]
+  s.extra_rdoc_files = %w( README.rdoc LICENSE THANKS )
+  s.require_path = "lib"
+  s.bindir = 'bin'
+  s.executables << 'couchview'
+  s.executables << 'couchdir'
+  s.add_dependency("json", [">= 1.1.2"])
+  s.add_dependency("rest-client", [">= 0.5"])
+end
+
+namespace :github do # thanks merb!
+  desc "Update Github Gemspec"
+  task :update_gemspec do
+    skip_fields = %w(new_platform original_platform)
+    integer_fields = %w(specification_version)
+
+    result = "Gem::Specification.new do |s|\n"
+    spec.instance_variables.each do |ivar|
+      value = spec.instance_variable_get(ivar)
+      name  = ivar.split("@").last
+      next if skip_fields.include?(name) || value.nil? || value == "" || (value.respond_to?(:empty?) && value.empty?)
+      if name == "dependencies"
+        value.each do |d|
+          dep, *ver = d.to_s.split(" ")
+          result <<  "  s.add_dependency #{dep.inspect}, #{ver.join(" ").inspect.gsub(/[()]/, "")}\n"
+        end
+      else
+        case value
+        when Array
+          value =  name != "files" ? value.inspect : value.inspect.split(",").join(",\n")
+        when String
+          value = value.to_i if integer_fields.include?(name)
+          value = value.inspect
+        else
+          value = value.to_s.inspect
+        end
+        result << "  s.#{name} = #{value}\n"
+      end
+    end
+    result << "end"
+    File.open(File.join(File.dirname(__FILE__), "#{spec.name}.gemspec"), "w"){|f| f << result}
+  end
+end
+
 desc "Run all specs"
 Spec::Rake::SpecTask.new('spec') do |t|
 	t.spec_files = FileList['spec/*_spec.rb']
@@ -19,8 +74,11 @@ Rake::RDocTask.new do |rdoc|
   rdoc.rdoc_files.add(files)
   rdoc.main = "README.rdoc"
   rdoc.title = "CouchRest: Ruby CouchDB, close to the metal"
-  # rdoc.rdoc_dir = "doc/rdoc"
-  # rdoc.options << "--line-numbers" << "--inline-source"
 end
 
+desc "Generate the gemspec"
+
+
+
+
 task :default => :spec