Module: FFI::Zlib

Extended by:
Library
Defined in:
lib/ffi/zlib.rb

Overview

Defined Under Namespace

Classes: GZ_header, Z_stream

Constant Summary collapse

ZLIB_VERSION = 
zlibVersion()
Z_NO_FLUSH =

Allowed flush values.

0
Z_PARTIAL_FLUSH = 
1
Z_SYNC_FLUSH = 
2
Z_FULL_FLUSH = 
3
Z_FINISH = 
4
Z_BLOCK = 
5
Z_OK =

Return codes for the compression/decompression functions. Negative values are errors, positive values are used for special but normal events.

0
Z_STREAM_END = 
1
Z_NEED_DICT = 
2
Z_ERRNO = 
-1
Z_STREAM_ERROR = 
-2
Z_DATA_ERROR = 
-3
Z_MEM_ERROR = 
-4
Z_BUF_ERROR = 
-5
Z_VERSION_ERROR = 
-6
Z_NO_COMPRESSION =

Compression levels.

0
Z_BEST_SPEED = 
1
Z_BEST_COMPRESSION = 
9
Z_DEFAULT_COMPRESSION = 
-1
Z_FILTERED =

Compression strategies.

1
Z_HUFFMAN_ONLY = 
2
Z_RLE = 
3
Z_FIXED = 
4
Z_DEFAULT_STRATEGY = 
0
Z_BINARY =

Possible values of the data_type field.

0
Z_TEXT = 
1
Z_UNKNOWN = 
2
Z_DEFLATED =

The deflate compression method (the only one supported).

8

Class Method Summary collapse

Class Method Details

.deflateInit(zstream, level) ⇒ Object 



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# File 'lib/ffi/zlib.rb', line 114

def self.deflateInit(zstream, level)
    deflateInit_(zstream, level, ZLIB_VERSION, zstream.size)
end

.deflateInit2(zstream, level, method, window_bits, mem_level, strategy) ⇒ Object 



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# File 'lib/ffi/zlib.rb', line 118

def self.deflateInit2(zstream, level, method, window_bits, mem_level, strategy)
    deflateInit2_(zstream, level, method, window_bits, mem_level, strategy, ZLIB_VERSION, zstream.size)
end

.inflateInit(zstream) ⇒ Object 



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# File 'lib/ffi/zlib.rb', line 138

def self.inflateInit(zstream)
    inflateInit_(zstream, ZLIB_VERSION, zstream.size)
end

.inflateInit2(zstream, window_bits) ⇒ Object 



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# File 'lib/ffi/zlib.rb', line 142

def self.inflateInit2(zstream, window_bits)
    inflateInit2_(zstream, window_bits, ZLIB_VERSION, zstream.size)
end