zlib.cr

This library provides binding for ZLib library.

Status

Alpha

Requirements

• Crystal language version 0.9 and higher.
• zlib version 1.2.5 or higher

Goal

Provide a simple API to handle Zlib Deflate/Inflate stream and GZFile API.

Usage

An example of using GZFile API:

Zlib::GZFile.open("output.gz", "w") do |f|
  f.puts "hello world!"
end

An example of deflating of a stream of data:

File.open("data.txt", "r") do |src|
  File.open("data.txt.z", "w") do |dst|
    deflate = Zlib::Deflate.new(dst)

    IO.copy(src, deflate)
    deflate.finish
  end
end

and inflating it back:

File.open("data.txt.z", "r") do |src|
  inflate = Zlib::Inflate.new(STDOUT)

  IO.copy(src, inflate)
end

License

MIT clause - see LICENSE for more details.