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