42 lines
1.1 KiB
Ruby
Executable File
42 lines
1.1 KiB
Ruby
Executable File
module Zip
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class PassThruDecompressor < Decompressor #:nodoc:all
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def initialize(input_stream, chars_to_read)
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super(input_stream)
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@chars_to_read = chars_to_read
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@read_so_far = 0
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@has_returned_empty_string = false
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end
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def sysread(number_of_bytes = nil, buf = '')
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if input_finished?
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has_returned_empty_string_val = @has_returned_empty_string
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@has_returned_empty_string = true
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return '' unless has_returned_empty_string_val
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return
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end
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if number_of_bytes.nil? || @read_so_far + number_of_bytes > @chars_to_read
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number_of_bytes = @chars_to_read - @read_so_far
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end
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@read_so_far += number_of_bytes
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@input_stream.read(number_of_bytes, buf)
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end
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def produce_input
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sysread(::Zip::Decompressor::CHUNK_SIZE)
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end
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def input_finished?
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@read_so_far >= @chars_to_read
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end
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alias :eof :input_finished?
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alias :eof? :input_finished?
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end
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end
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# Copyright (C) 2002, 2003 Thomas Sondergaard
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# rubyzip is free software; you can redistribute it and/or
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# modify it under the terms of the ruby license.
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