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//opt/alt/ruby34/share/rubygems/rubygems/package/io_source.rb
# frozen_string_literal: true ## # Supports reading and writing gems from/to a generic IO object. This is # useful for other applications built on top of rubygems, such as # rubygems.org. # # This is a private class, do not depend on it directly. Instead, pass an IO # object to `Gem::Package.new`. class Gem::Package::IOSource < Gem::Package::Source # :nodoc: all attr_reader :io def initialize(io) @io = io end def start @start ||= begin if io.pos > 0 raise Gem::Package::Error, "Cannot read start unless IO is at start" end value = io.read 20 io.rewind value end end def present? true end def with_read_io yield io ensure io.rewind end def with_write_io yield io ensure io.rewind end def path end end
