Gem::Source

 
               # File ruby-3.1.2/lib/rubygems/source.rb, line 28
def initialize(uri)
  begin
    unless uri.kind_of? URI
      uri = URI.parse(uri.to_s)
    end
  rescue URI::InvalidURIError
    raise if Gem::Source == self.class
  end

  @uri = uri
  @update_cache = nil
end
            

 
               # File ruby-3.1.2/lib/rubygems/source.rb, line 44
def <=>(other)
  case other
  when Gem::Source::Installed,
       Gem::Source::Local,
       Gem::Source::Lock,
       Gem::Source::SpecificFile,
       Gem::Source::Git,
       Gem::Source::Vendor then
    -1
  when Gem::Source then
    if !@uri
      return 0 unless other.uri
      return 1
    end

    return -1 if !other.uri

    # Returning 1 here ensures that when sorting a list of sources, the
    # original ordering of sources supplied by the user is preserved.
    return 1 unless @uri.to_s == other.uri.to_s

    0
  else
    nil
  end
end
            

 
               # File ruby-3.1.2/lib/rubygems/source.rb, line 110
def cache_dir(uri)
  # Correct for windows paths
  escaped_path = uri.path.sub(/^\/([a-z]):\//i, '/\\1-/')
  escaped_path.tap(&Gem::UNTAINT)

  File.join Gem.spec_cache_dir, "#{uri.host}%#{uri.port}", File.dirname(escaped_path)
end
            

 
               # File ruby-3.1.2/lib/rubygems/source.rb, line 213
def download(spec, dir=Dir.pwd)
  fetcher = Gem::RemoteFetcher.fetcher
  fetcher.download spec, uri.to_s, dir
end
            

 
               # File ruby-3.1.2/lib/rubygems/source.rb, line 134
def fetch_spec(name_tuple)
  fetcher = Gem::RemoteFetcher.fetcher

  spec_file_name = name_tuple.spec_name

  source_uri = enforce_trailing_slash(uri) + "#{Gem::MARSHAL_SPEC_DIR}#{spec_file_name}"

  cache_dir = cache_dir source_uri

  local_spec = File.join cache_dir, spec_file_name

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

  source_uri.path << '.rz'

  spec = fetcher.fetch_path source_uri
  spec = Gem::Util.inflate spec

  if update_cache?
    require "fileutils"
    FileUtils.mkdir_p cache_dir

    File.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 ruby-3.1.2/lib/rubygems/source.rb, line 180
def load_specs(type)
  file       = FILES[type]
  fetcher    = Gem::RemoteFetcher.fetcher
  file_name  = "#{file}.#{Gem.marshal_version}"
  spec_path  = enforce_trailing_slash(uri) + "#{file_name}.gz"
  cache_dir  = cache_dir spec_path
  local_file = File.join(cache_dir, file_name)
  retried    = false

  if update_cache?
    require "fileutils"
    FileUtils.mkdir_p cache_dir
  end

  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 ruby-3.1.2/lib/rubygems/source.rb, line 231
def typo_squatting?(host, distance_threshold=4)
  return if @uri.host.nil?
  levenshtein_distance(@uri.host, host).between? 1, distance_threshold
end
            

 
               # File ruby-3.1.2/lib/rubygems/source.rb, line 121
def update_cache?
  return @update_cache unless @update_cache.nil?
  @update_cache =
    begin
      File.stat(Gem.user_home).uid == Process.uid
    rescue Errno::ENOENT
      false
    end
end
            

 
               # File ruby-3.1.2/lib/rubygems/source.rb, line 238
def enforce_trailing_slash(uri)
  uri.merge(uri.path.gsub(/\/+$/, '') + '/')
end