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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
platform display the supported gem platforms
<omitted> display everything
EOF
return args.gsub(/^\s+/, '')
end
def description # :nodoc:
<<-EOF
The RubyGems environment can be controlled through command line arguments,
gemrc files, environment variables and built-in defaults.
Command line argument defaults and some RubyGems defaults can be set in a
~/.gemrc file for individual users and a /etc/gemrc for all users. These
files are YAML files with the following YAML keys:
:sources: A YAML array of remote gem repositories to install gems from
:verbose: Verbosity of the gem command. false, true, and :really are the
levels
:update_sources: Enable/disable automatic updating of repository metadata
:backtrace: Print backtrace when RubyGems encounters an error
:gempath: The paths in which to look for gems
:disable_default_gem_server: Force specification of gem server host on push
<gem_command>: A string containing arguments for the specified gem command
Example:
:verbose: false
install: --no-wrappers
update: --no-wrappers
:disable_default_gem_server: true
RubyGems' default local repository can be overridden with the GEM_PATH and
GEM_HOME environment variables. GEM_HOME sets the default repository to
install into. GEM_PATH allows multiple local repositories to be searched for
gems.
If you are behind a proxy server, RubyGems uses the HTTP_PROXY,
HTTP_PROXY_USER and HTTP_PROXY_PASS environment variables to discover the
proxy server.
If you would like to push gems to a private gem server the RUBYGEMS_HOST
environment variable can be set to the URI for that server.
If you are packaging RubyGems all of RubyGems' defaults are in
lib/rubygems/defaults.rb. You may override these in
lib/rubygems/defaults/operating_system.rb
EOF
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::VERSION
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.to_a.join("\n")
when /^platform/ then
out << Gem.platforms.join(File::PATH_SEPARATOR)
when nil then
out = "RubyGems Environment:\n"
out << " - RUBYGEMS VERSION: #{Gem::VERSION}\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 << " - EXECUTABLE DIRECTORY: #{Gem.bindir}\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|
value = value.gsub(/./, '*') if name == 'gemcutter_key'
out << " - #{name.inspect} => #{value.inspect}\n"
end
out << " - REMOTE SOURCES:\n"
Gem.sources.each do |s|
out << " - #{s}\n"
end
else
raise Gem::CommandLineError, "Unknown environment option [#{arg}]"
end
say out
true
end
end