class Gem::ConfigFile

# File lib/rubygems/config_file.rb, line 171
def initialize(args)
  @config_file_name = nil
  need_config_file_name = false

  arg_list = []

  args.each do |arg|
    if need_config_file_name then
      @config_file_name = arg
      need_config_file_name = false
    elsif arg =~ /^--config-file=(.*)/ then
      @config_file_name = $1
    elsif arg =~ /^--config-file$/ then
      need_config_file_name = true
    else
      arg_list << arg
    end
  end

  @backtrace = DEFAULT_BACKTRACE
  @bulk_threshold = DEFAULT_BULK_THRESHOLD
  @verbose = DEFAULT_VERBOSITY
  @update_sources = DEFAULT_UPDATE_SOURCES

  operating_system_config = Marshal.load Marshal.dump(OPERATING_SYSTEM_DEFAULTS)
  platform_config = Marshal.load Marshal.dump(PLATFORM_DEFAULTS)
  system_config = load_file SYSTEM_WIDE_CONFIG_FILE
  user_config = load_file config_file_name.dup.untaint
  environment_config = (ENV['GEMRC'] || '').split(/[:;]/).inject({}) do |result, file|
    result.merge load_file file
  end


  @hash = operating_system_config.merge platform_config
  @hash = @hash.merge system_config
  @hash = @hash.merge user_config
  @hash = @hash.merge environment_config

  # HACK these override command-line args, which is bad
  @backtrace                  = @hash[:backtrace]                  if @hash.key? :backtrace
  @bulk_threshold             = @hash[:bulk_threshold]             if @hash.key? :bulk_threshold
  @home                       = @hash[:gemhome]                    if @hash.key? :gemhome
  @path                       = @hash[:gempath]                    if @hash.key? :gempath
  @update_sources             = @hash[:update_sources]             if @hash.key? :update_sources
  @verbose                    = @hash[:verbose]                    if @hash.key? :verbose
  @disable_default_gem_server = @hash[:disable_default_gem_server] if @hash.key? :disable_default_gem_server

  @ssl_verify_mode  = @hash[:ssl_verify_mode]  if @hash.key? :ssl_verify_mode
  @ssl_ca_cert      = @hash[:ssl_ca_cert]      if @hash.key? :ssl_ca_cert
  @ssl_client_cert  = @hash[:ssl_client_cert]  if @hash.key? :ssl_client_cert

  @api_keys         = nil
  @rubygems_api_key = nil

  Gem.sources = @hash[:sources] if @hash.key? :sources
  handle_arguments arg_list
end

# File lib/rubygems/config_file.rb, line 452
def [](key)
  @hash[key.to_s]
end

# File lib/rubygems/config_file.rb, line 457
def []=(key, value)
  @hash[key.to_s] = value
end

# File lib/rubygems/config_file.rb, line 232
def api_keys
  load_api_keys unless @api_keys

  @api_keys
end

# File lib/rubygems/config_file.rb, line 349
def backtrace
  @backtrace or $DEBUG
end

# File lib/rubygems/config_file.rb, line 242
  def check_credentials_permissions
    return if Gem.win_platform? # windows doesn't write 0600 as 0600
    return unless File.exist? credentials_path

    existing_permissions = File.stat(credentials_path).mode & 0777

    return if existing_permissions == 0600

    alert_error <<-ERROR
Your gem push credentials file located at:

\t#{credentials_path}

has file permissions of 0#{existing_permissions.to_s 8} but 0600 is required.

To fix this error run:

\tchmod 0600 #{credentials_path}

You should reset your credentials at:

\thttps://rubygems.org/profile/edit

if you believe they were disclosed to a third party.
    ERROR

    terminate_interaction 1
  end

# File lib/rubygems/config_file.rb, line 354
def config_file_name
  @config_file_name || Gem.config_file
end

# File lib/rubygems/config_file.rb, line 274
def credentials_path
  File.join Gem.user_home, '.gem', 'credentials'
end

# File lib/rubygems/config_file.rb, line 359
def each(&block)
  hash = @hash.dup
  hash.delete :update_sources
  hash.delete :verbose
  hash.delete :backtrace
  hash.delete :bulk_threshold

  yield :update_sources, @update_sources
  yield :verbose, @verbose
  yield :backtrace, @backtrace
  yield :bulk_threshold, @bulk_threshold

  yield 'config_file_name', @config_file_name if @config_file_name

  hash.each(&block)
end

# File lib/rubygems/config_file.rb, line 377
def handle_arguments(arg_list)
  @args = []

  arg_list.each do |arg|
    case arg
    when /^--(backtrace|traceback)$/ then
      @backtrace = true
    when /^--debug$/ then
      $DEBUG = true
    else
      @args << arg
    end
  end
end

# File lib/rubygems/config_file.rb, line 278
def load_api_keys
  check_credentials_permissions

  @api_keys = if File.exist? credentials_path then
                load_file(credentials_path)
              else
                @hash
              end

  if @api_keys.key? :rubygems_api_key then
    @rubygems_api_key    = @api_keys[:rubygems_api_key]
    @api_keys[:rubygems] = @api_keys.delete :rubygems_api_key unless
      @api_keys.key? :rubygems
  end
end

# File lib/rubygems/config_file.rb, line 327
def load_file(filename)
  Gem.load_yaml

  return {} unless filename and File.exist? filename

  begin
    content = YAML.load(File.read(filename))
    unless content.kind_of? Hash
      warn "Failed to load #{filename} because it doesn't contain valid YAML hash"
      return {}
    end
    return content
  rescue *YAMLErrors => e
    warn "Failed to load #{filename}, #{e.to_s}"
  rescue Errno::EACCES
    warn "Failed to load #{filename} due to permissions problem."
  end

  {}
end

# File lib/rubygems/config_file.rb, line 393
def really_verbose
  case verbose
  when true, false, nil then
    false
  else
    true
  end
end

# File lib/rubygems/config_file.rb, line 297
def rubygems_api_key
  load_api_keys unless @rubygems_api_key

  @rubygems_api_key
end

# File lib/rubygems/config_file.rb, line 306
def rubygems_api_key= api_key
  check_credentials_permissions

  config = load_file(credentials_path).merge(:rubygems_api_key => api_key)

  dirname = File.dirname credentials_path
  Dir.mkdir(dirname) unless File.exist? dirname

  Gem.load_yaml

  permissions = 0600 & (~File.umask)
  File.open(credentials_path, 'w', permissions) do |f|
    f.write config.to_yaml
  end

  @rubygems_api_key = api_key
end

# File lib/rubygems/config_file.rb, line 445
def write
  open config_file_name, 'w' do |io|
    io.write to_yaml
  end
end