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rails--rails/railties/lib/tasks/gems.rake

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Ruby

desc "List the gems that this rails application depends on"
task :gems => :environment do
Rails.configuration.gems.each do |gem|
puts "[#{gem.loaded? ? '*' : ' '}] #{gem.name} #{gem.requirement.to_s}"
end
end
namespace :gems do
desc "Build any native extensions for unpacked gems"
task :build do
Dir[File.join(RAILS_ROOT, 'vendor', 'gems', '*')].each do |gem_dir|
spec_file = File.join(gem_dir, '.specification')
next unless File.exists?(spec_file)
specification = YAML::load_file(spec_file)
next unless ENV['GEM'].blank? || ENV['GEM'] == specification.name
Rails::GemBuilder.new(specification, gem_dir).build_extensions
puts "Built gem: '#{gem_dir}'"
end
end
desc "Installs all required gems for this application."
task :install => :environment do
require 'rubygems'
require 'rubygems/gem_runner'
Rails.configuration.gems.each { |gem| gem.install unless gem.loaded? }
end
desc "Unpacks the specified gem into vendor/gems."
task :unpack do
Rake::Task["environment"].invoke
require 'rubygems'
require 'rubygems/gem_runner'
Rails.configuration.gems.each do |gem|
next unless ENV['GEM'].blank? || ENV['GEM'] == gem.name
gem.unpack_to(File.join(RAILS_ROOT, 'vendor', 'gems')) if gem.loaded?
end
end
end