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require 'yaml'
require 'rubygems/command'
require 'rubygems/local_remote_options'
require 'rubygems/version_option'
require 'rubygems/source_info_cache'
class Gem::Commands::SpecificationCommand < Gem::Command
include Gem::LocalRemoteOptions
include Gem::VersionOption
def initialize
super 'specification', 'Display gem specification (in yaml)',
:domain => :local, :version => Gem::Requirement.default
add_version_option('examine')
add_platform_option
add_option('--all', 'Output specifications for all versions of',
'the gem') do |value, options|
options[:all] = true
end
add_local_remote_options
end
def arguments # :nodoc:
"GEMFILE name of gem to show the gemspec for"
end
def defaults_str # :nodoc:
"--local --version '#{Gem::Requirement.default}'"
end
def usage # :nodoc:
"#{program_name} [GEMFILE]"
end
def execute
specs = []
gem = get_one_gem_name
if local? then
source_index = Gem::SourceIndex.from_installed_gems
specs.push(*source_index.search(/\A#{gem}\z/, options[:version]))
end
if remote? then
alert_warning "Remote information is not complete\n\n"
Gem::SourceInfoCache.cache_data.each do |_,sice|
specs.push(*sice.source_index.search(gem, options[:version]))
end
end
if specs.empty? then
alert_error "Unknown gem '#{gem}'"
terminate_interaction 1
end
output = lambda { |spec| say spec.to_yaml; say "\n" }
if options[:all] then
specs.each(&output)
else
spec = specs.sort_by { |spec| spec.version }.last
output[spec]
end
end
end
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