1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
# frozen_string_literal: true
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 for compatibility. Remove for version 4.
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 => e
raise ::Zip::DecompressionError, e
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.
|
