Class Gem::Source < Object

# File lib/rubygems/source.rb, line 11
def initialize(uri)
  unless uri.kind_of? URI
    uri = URI.parse(uri.to_s)
  end

  @uri = uri
  @api_uri = nil
end

# File lib/rubygems/source.rb, line 27
def <=>(other)
  if !@uri
    return 0 unless other.uri
    return -1
  end

  return 1 if !other.uri

  @uri.to_s <=> other.uri.to_s
end

# File lib/rubygems/source.rb, line 40
def ==(other)
  case other
  when self.class
    @uri == other.uri
  else
    false
  end
end

# File lib/rubygems/source.rb, line 22
def api_uri
  require 'rubygems/remote_fetcher'
  @api_uri ||= Gem::RemoteFetcher.fetcher.api_endpoint uri
end

# File lib/rubygems/source.rb, line 58
def cache_dir(uri)
  # Correct for windows paths
  escaped_path = uri.path.sub(/^\/([a-z]):\//i, '/\1-/')
  root = File.join Gem.user_home, '.gem', 'specs'
  File.join root, "#{uri.host}%#{uri.port}", File.dirname(escaped_path)
end

# File lib/rubygems/source.rb, line 145
def download(spec, dir=Dir.pwd)
  fetcher = Gem::RemoteFetcher.fetcher
  fetcher.download spec, @uri.to_s, dir
end

# File lib/rubygems/source.rb, line 74
def fetch_spec(name)
  fetcher = Gem::RemoteFetcher.fetcher

  spec_file_name = name.spec_name

  uri = @uri + "#{Gem::MARSHAL_SPEC_DIR}#{spec_file_name}"

  cache_dir = cache_dir uri

  local_spec = File.join cache_dir, spec_file_name

  if File.exist? local_spec then
    spec = Gem.read_binary local_spec
    spec = Marshal.load(spec) rescue nil
    return spec if spec
  end

  uri.path << '.rz'

  spec = fetcher.fetch_path uri
  spec = Gem.inflate spec

  if update_cache? then
    FileUtils.mkdir_p cache_dir

    open local_spec, 'wb' do |io|
      io.write spec
    end
  end

  # TODO: Investigate setting Gem::Specification#loaded_from to a URI
  Marshal.load spec
end

# File lib/rubygems/source.rb, line 51
def hash
  @uri.hash
end

# File lib/rubygems/source.rb, line 119
def load_specs(type)
  file       = FILES[type]
  fetcher    = Gem::RemoteFetcher.fetcher
  file_name  = "#{file}.#{Gem.marshal_version}"
  spec_path  = @uri + "#{file_name}.gz"
  cache_dir  = cache_dir spec_path
  local_file = File.join(cache_dir, file_name)
  retried    = false

  FileUtils.mkdir_p cache_dir if update_cache?

  spec_dump = fetcher.cache_update_path spec_path, local_file, update_cache?

  begin
    Gem::NameTuple.from_list Marshal.load(spec_dump)
  rescue ArgumentError
    if update_cache? && !retried
      FileUtils.rm local_file
      retried = true
      retry
    else
      raise Gem::Exception.new("Invalid spec cache file in #{local_file}")
    end
  end
end

# File lib/rubygems/source.rb, line 65
def update_cache?
  @update_cache ||=
    begin
      File.stat(Gem.user_home).uid == Process.uid
    rescue Errno::ENOENT
      false
    end
end