Difference between revisions of "Zlib.deflate"
(Created page with "__NOTOC__ '''Available since:''' Gideros 2015.04.18<br/> === Description === Return a deflate stream. <source lang="lua"> (stream), = zlib.deflate(sinklevelmethodwindowBitsmem...") |
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Return a deflate stream. | Return a deflate stream. | ||
<source lang="lua"> | <source lang="lua"> | ||
| − | (stream) | + | (stream) = zlib.deflate(sink,level,method,windowBits,memLevel,strategy,dictionary) |
</source> | </source> | ||
| − | '''sink | + | '''sink''': (function or table) function | { write: function [, close: function, flush: function ] }, ''''''<br/> |
| − | '''level | + | '''level''': (number) compression level, 0 no compression, 9 best compression, -1 default compression '''optional'''<br/> |
| − | '''method | + | '''method''': (number) compression method, should be 8 for this version '''optional'''<br/> |
| − | '''windowBits | + | '''windowBits''': (number) from 8 to 15, larger values of this parameter result in better compression at the expense of memory usage '''optional'''<br/> |
| − | '''memLevel | + | '''memLevel''': (number) 1 uses minimum memory but is slow and reduces compression ratio; 9 uses maximum memory for optimal speed '''optional'''<br/> |
| − | '''strategy | + | '''strategy''': (number) 1 - Filtered, 2 - Huffman, 3 - RLE, 4 - Fixed, 0 - default '''optional'''<br/> |
| − | '''dictionary | + | '''dictionary''': (string) compression dictionary '''optional'''<br/> |
'''Returns''' (stream) deflate stream<br/> | '''Returns''' (stream) deflate stream<br/> | ||
Revision as of 11:21, 23 August 2018
Available since: Gideros 2015.04.18
Description
Return a deflate stream.
(stream) = zlib.deflate(sink,level,method,windowBits,memLevel,strategy,dictionary)
'sink: (function or table) function | { write: function [, close: function, flush: function ] }, '
level: (number) compression level, 0 no compression, 9 best compression, -1 default compression optional
method: (number) compression method, should be 8 for this version optional
windowBits: (number) from 8 to 15, larger values of this parameter result in better compression at the expense of memory usage optional
memLevel: (number) 1 uses minimum memory but is slow and reduces compression ratio; 9 uses maximum memory for optimal speed optional
strategy: (number) 1 - Filtered, 2 - Huffman, 3 - RLE, 4 - Fixed, 0 - default optional
dictionary: (string) compression dictionary optional
Returns (stream) deflate stream
