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Versions: 42
Compression:
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Contents
module Zip
class Inflater < Decompressor #:nodoc:all
def initialize(*args)
super
@buffer = +''
@zlib_inflater = ::Zlib::Inflate.new(-Zlib::MAX_WBITS)
end
def read(length = nil, outbuf = '')
return (length.nil? || length.zero? ? '' : nil) if eof
while length.nil? || (@buffer.bytesize < length)
break if input_finished?
@buffer << produce_input
end
outbuf.replace(@buffer.slice!(0...(length || @buffer.bytesize)))
end
def eof
@buffer.empty? && input_finished?
end
alias eof? eof
private
def produce_input
retried = 0
begin
@zlib_inflater.inflate(input_stream.read(Decompressor::CHUNK_SIZE))
rescue Zlib::BufError
raise if retried >= 5 # how many times should we retry?
retried += 1
retry
end
rescue Zlib::Error
raise(::Zip::DecompressionError, 'zlib error while inflating')
end
def input_finished?
@zlib_inflater.finished?
end
end
::Zip::Decompressor.register(::Zip::COMPRESSION_METHOD_DEFLATE, ::Zip::Inflater)
end
# Copyright (C) 2002, 2003 Thomas Sondergaard
# rubyzip is free software; you can redistribute it and/or
# modify it under the terms of the ruby license.
Version data entries
42 entries across 32 versions & 8 rubygems