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require 'rubygems/command'
class Gem::Commands::EnvironmentCommand < Gem::Command
def initialize
super 'environment', 'Display information about the RubyGems environment'
end
def arguments # :nodoc:
args = <<-EOF
packageversion display the package version
gemdir display the path where gems are installed
gempath display path used to search for gems
version display the gem format version
remotesources display the remote gem servers
<omitted> display everything
EOF
return args.gsub(/^\s+/, '')
end
def usage # :nodoc:
"#{program_name} [arg]"
end
def execute
out = ''
arg = options[:args][0]
case arg
when /^packageversion/ then
out << Gem::RubyGemsPackageVersion
when /^version/ then
out << Gem::RubyGemsVersion
when /^gemdir/, /^gemhome/, /^home/, /^GEM_HOME/ then
out << Gem.dir
when /^gempath/, /^path/, /^GEM_PATH/ then
out << Gem.path.join(File::PATH_SEPARATOR)
when /^remotesources/ then
out << Gem.sources.join("\n")
when nil then
out = "RubyGems Environment:\n"
out << " - RUBYGEMS VERSION: #{Gem::RubyGemsVersion}\n"
out << " - RUBY VERSION: #{RUBY_VERSION} (#{RUBY_RELEASE_DATE}"
out << " patchlevel #{RUBY_PATCHLEVEL}" if defined? RUBY_PATCHLEVEL
out << ") [#{RUBY_PLATFORM}]\n"
out << " - INSTALLATION DIRECTORY: #{Gem.dir}\n"
out << " - RUBYGEMS PREFIX: #{Gem.prefix}\n" unless Gem.prefix.nil?
out << " - RUBY EXECUTABLE: #{Gem.ruby}\n"
out << " - RUBYGEMS PLATFORMS:\n"
Gem.platforms.each do |platform|
out << " - #{platform}\n"
end
out << " - GEM PATHS:\n"
out << " - #{Gem.dir}\n"
path = Gem.path.dup
path.delete Gem.dir
path.each do |p|
out << " - #{p}\n"
end
out << " - GEM CONFIGURATION:\n"
Gem.configuration.each do |name, value|
out << " - #{name.inspect} => #{value.inspect}\n"
end
out << " - REMOTE SOURCES:\n"
Gem.sources.each do |s|
out << " - #{s}\n"
end
else
fail Gem::CommandLineError, "Unknown enviroment option [#{arg}]"
end
say out
true
end
end
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