Rakefile

task :default => :test
 
desc "Run the tests."
task :test do
  rename_test_git_dir
  Dir.glob("tests/*_test.rb").each do |file|
        require "./#{file}"
  end
end

def rename_test_git_dir
  dot_git = File.join(File.dirname(__FILE__), 'tests', 'example')
  cp_r File.join(dot_git, '_git'), File.join(dot_git, 'test_repo', '.git'), :remove_destination => true
end


require 'rubygems'
require 'date'

#############################################################################
#
# Helper functions
#
#############################################################################

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

def date
  Date.today.to_s
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

def version
  spec = File.read(gemspec_file)
  spec.match(/s\.version = \'(.*)\'/)[1]
end

#############################################################################
#
# Packaging tasks
#
#############################################################################

desc 'Create a release build and push 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 pull --rebase origin master"
  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 'Publish to rubygems. Same as release'
task :publish => :release

desc 'Build gem'
task :build => :gemspec do
  sh "mkdir -p pkg"
  sh "gem build #{gemspec_file}"
  sh "mv #{gem_file} pkg"
end

desc "Build and install"
task :install => :build do
  sh "gem install --local --no-document pkg/#{name}-#{version}.gem"
end

desc 'Update gemspec'
task :gemspec do
  # read spec file and split out manifest section
  spec = File.read(gemspec_file)
  head, manifest, tail = spec.split("  # = MANIFEST =\n")

  # replace name and date
  replace_header(head, :name)
  replace_header(head, :date)

  # determine file list from git ls-files
  files = `git ls-files`.
    split("\n").
    sort.
    reject { |file| file =~ /^\./ }.
    reject { |file| file =~ /^(rdoc|pkg|test|Home\.md|\.gitattributes)/ }.
    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