33 lines
967 B
Ruby
Executable File
33 lines
967 B
Ruby
Executable File
module Zip
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class Deflater < Compressor #:nodoc:all
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def initialize(output_stream, level = Zip.default_compression, encrypter = NullEncrypter.new)
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super()
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@output_stream = output_stream
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@zlib_deflater = ::Zlib::Deflate.new(level, -::Zlib::MAX_WBITS)
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@size = 0
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@crc = ::Zlib.crc32
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@encrypter = encrypter
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@buffer_stream = ::StringIO.new('')
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end
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def << (data)
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val = data.to_s
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@crc = Zlib::crc32(val, @crc)
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@size += val.bytesize
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@buffer_stream << @zlib_deflater.deflate(data)
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end
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def finish
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@output_stream << @encrypter.encrypt(@buffer_stream.string)
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@output_stream << @encrypter.encrypt(@zlib_deflater.finish) until @zlib_deflater.finished?
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end
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attr_reader :size, :crc
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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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