Zlib

Zlib bindings for Julia.

Note: This library is currently maintained, but should be considered deprecated in favor of Libz.jl, which is in every way better.

This library provides a compress and decompress function that work as follows.

# Compress data, ouputting a Vector{UInt8} where data is either a Vector{UInt8}
# or an AbstractString.
compress(data)

# Compress at a particular level in [1, 9]
compress("Hello world", 5)

# Decompress to a Vector{UInt8} where data is either a Vector{UInt8} or an
# AbstractString.
decompress(data)

Incremental compression or decompression can be performed with the Reader and Writer types which both derive IO, and can be used with most functions that operate on streams.

Reader(io::IO, raw::Bool=false, bufsize::Int=4096)

• io source from which compressed data should be read
• raw true if the data is in the raw deflate format.
• bufsize how much input data to operate on at a time

Writer(io::IO, level::Integer, gzip::Bool=false, raw::Bool=false)

• io source to which compressed data should be written
• level compression level in [1,9]
• gzip true if output should be in the gzip format
• raw true if output is in the raw deflate format.

crc32(data::Vector{UInt8}, crc::Integer=0) crc32(data::AbstractString, crc::Integer=0)

Compute and return the 32-bit cycle redundancy check on data, updating a running value crc.

# E.g.
crc32("hello")

0x3610a686