zlib

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Andrew Lambert edited this page Dec 8, 2022 · 21 revisions

zlib

Module declaration

 Protected Module zlib

Remarks

Contains all methods, properties, classes, etc. relating to zlib.

Classes

Methods

Constants

Stream encoding

Used in creating or opening a compressed stream to indicate the type of stream.

DEFLATE_ENCODING Deflated data in a zlib wrapper.
GZIP_ENCODING Deflated data in a gzip wrapper.
RAW_ENCODING Deflated data with no wrapper.
Z_DETECT Try them all.

Compression level

Used in creating a compressed stream to indicate the compression level.

Z_BEST_COMPRESSION=9
Z_BEST_SPEED=1
Z_DEFAULT_COMPRESSION=-1 (equivalent to level 6)
Z_NO_COMPRESSION=0

Compression strategies

Used in creating a compressed stream to indicate the compression strategy. See: Deflater.Strategy

Z_DEFAULT_STRATEGY
Z_FILTERED
Z_FIXED
Z_HUFFMAN_ONLY
Z_RLE

Flush modes

Used in writing a compressed stream to indicate whether and how pending output should be flushed. See: Deflater.Deflate

Z_FINISH
Z_BLOCK
Z_FULL_FLUSH
Z_NO_FLUSH
Z_PARTIAL_FLUSH
Z_SYNC_FLUSH
Z_TREES

Datatype guesses

Indicates zlib's guess as to the kind of data being processed. See: Deflater.DataType

Z_ASCII
Z_BINARY
Z_TEXT
Z_UNKNOWN

Miscellaneous

DEFAULT_MEM_LVL See: Deflater.Constructor
Z_DEFLATED See: Deflater.Constructor
Z_NEED_DICT See: Inflater.Dictionary

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