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require 'rubygems'

require 'rake'

require 'date'

#############################################################################

#

# Helper functions

#

#############################################################################

def name

@name ||= Dir['*.gemspec'].first.split('.').first

end

def version

line = File.read("lib/#{name}.rb")[/^\s*VERSION\s*=\s*.*/]

line.match(/.*VERSION\s*=\s*['"](.*)['"]/)[1]

end

def date

Date.today.to_s

end

def rubyforge_project

name

end

def gemspec_file

"#{name}.gemspec"

end

def gem_file

"#{name}-#{version}.gem"

end

def replace_header(head, header_name)

head.sub!(/(\.#{header_name}\s*= ').*'/) { "#{$1}#{send(header_name)}'"}

end

#############################################################################

#

# Standard tasks

#

#############################################################################

task :default => :test

require 'rake/testtask'

Rake::TestTask.new(:test) do |test|

test.libs << 'lib' << 'test'

test.pattern = 'test/**/*_test.rb'

test.verbose = true

end

desc "Open an irb session preloaded with this library"

task :console do

sh "irb -rubygems -r ./lib/#{name}.rb"

end

#############################################################################

#

# Custom tasks (add your own tasks here)

#

#############################################################################

desc "Kick it"

task :kick do

exec "kicker -e rake test lib"

end

#############################################################################

#

# Packaging tasks

#

#############################################################################

desc "Create tag v#{version} and build and push #{gem_file} to Rubygems"

task :release => :build do

unless `git branch` =~ /^\* master$/

puts "You must be on the master branch to release!"

exit!

end

sh "git commit --allow-empty -a -m 'Release #{version}'"

sh "git tag v#{version}"

sh "git push origin master"

sh "git push origin v#{version}"

sh "gem push pkg/#{name}-#{version}.gem"

end

desc "Build #{gem_file} into the pkg directory"

task :build => :gemspec do

sh "mkdir -p pkg"

sh "gem build #{gemspec_file}"

sh "mv #{gem_file} pkg"

end

desc "Generate #{gemspec_file}"

task :gemspec => :validate do

# read spec file and split out manifest section

spec = File.read(gemspec_file)

head, manifest, tail = spec.split(" # = MANIFEST =\n")

# replace name version and date

replace_header(head, :name)

replace_header(head, :version)

replace_header(head, :date)

#comment this out if your rubyforge_project has a different name

replace_header(head, :rubyforge_project)

# determine file list from git ls-files

files = `git ls-files`.

split("\n").

sort.

reject { |file| file =~ /^\./ }.

reject { |file| file =~ /^(rdoc|pkg)/ }.

map { |file| " #{file}" }.

join("\n")

# piece file back together and write

manifest = " s.files = %w[\n#{files}\n ]\n"

spec = [head, manifest, tail].join(" # = MANIFEST =\n")

File.open(gemspec_file, 'w') { |io| io.write(spec) }

puts "Updated #{gemspec_file}"

end

desc "Validate #{gemspec_file}"

task :validate do

unless Dir['VERSION*'].empty?

puts "A `VERSION` file at root level violates Gem best practices."

exit!

end

end