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# frozen_string_literal: true
require_relative "../command"
class Gem::Commands::EnvironmentCommand < Gem::Command
def initialize
super "environment", "Display information about the RubyGems environment"
end
def arguments # :nodoc:
args = <<-EOF
home display the path where gems are installed. Aliases: gemhome, gemdir, GEM_HOME
path display path used to search for gems. Aliases: gempath, GEM_PATH
user_gemhome display the path where gems are installed when `--user-install` is given. Aliases: user_gemdir
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 environment command lets you query rubygems for its configuration for
use in shell scripts or as a debugging aid.
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 gemrc in the SYSTEM CONFIGURATION
DIRECTORY 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 = String.new
arg = options[:args][0]
out <<
case arg
when /^version/ then
Gem::VERSION
when /^gemdir/, /^gemhome/, /^home/, /^GEM_HOME/ then
Gem.dir
when /^gempath/, /^path/, /^GEM_PATH/ then
Gem.path.join(File::PATH_SEPARATOR)
when /^user_gemdir/, /^user_gemhome/ then
Gem.user_dir
when /^remotesources/ then
Gem.sources.to_a.join("\n")
when /^platform/ then
Gem.platforms.join(File::PATH_SEPARATOR)
when nil then
show_environment
else
raise Gem::CommandLineError, "Unknown environment option [#{arg}]"
end
say out
true
end
def add_path(out, path)
path.each do |component|
out << " - #{component}\n"
end
end
def show_environment # :nodoc:
out = "RubyGems Environment:\n".dup
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 << " - USER INSTALLATION DIRECTORY: #{Gem.user_dir}\n"
out << " - RUBYGEMS PREFIX: #{Gem.prefix}\n" unless Gem.prefix.nil?
out << " - RUBY EXECUTABLE: #{Gem.ruby}\n"
out << " - GIT EXECUTABLE: #{git_path}\n"
out << " - EXECUTABLE DIRECTORY: #{Gem.bindir}\n"
out << " - SPEC CACHE DIRECTORY: #{Gem.spec_cache_dir}\n"
out << " - SYSTEM CONFIGURATION DIRECTORY: #{Gem::ConfigFile::SYSTEM_CONFIG_PATH}\n"
out << " - RUBYGEMS PLATFORMS:\n"
Gem.platforms.each do |platform|
out << " - #{platform}\n"
end
out << " - GEM PATHS:\n"
out << " - #{Gem.dir}\n"
gem_path = Gem.path.dup
gem_path.delete Gem.dir
add_path out, gem_path
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
out << " - SHELL PATH:\n"
shell_path = ENV["PATH"].split(File::PATH_SEPARATOR)
add_path out, shell_path
out
end
private
##
# Git binary path
def git_path
exts = ENV["PATHEXT"] ? ENV["PATHEXT"].split(";") : [""]
ENV["PATH"].split(File::PATH_SEPARATOR).each do |path|
exts.each do |ext|
exe = File.join(path, "git#{ext}")
return exe if File.executable?(exe) && !File.directory?(exe)
end
end
return nil
end
end