Go bindings for libdeflate

# embeds libdeflate version 1.19
go get github.com/bir3/[email protected]

Example

package main

import (
	"fmt"

	"github.com/bir3/libdeflate"
)

func main() {
	data := []byte{
		// text: "bgzf"
		0x1f, 0x8b, 0x08, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0x06, 0x00, 0x42, 0x43,
		0x02, 0x00, 0x1f, 0x00, 0x4b, 0x4a, 0xaf, 0x4a, 0x03, 0x00, 0x20, 0x68, 0xf2, 0x8c,
		0x04, 0x00, 0x00, 0x00,
	}
	out := make([]byte, 1000)
	dc := new(libdeflate.Decompressor)
	err := dc.Init()
	if err != nil {
		panic(err)
	}

	n, err := dc.GzipDecompress(out, data)
	if err != nil {
		panic(err)
	}
	fmt.Printf("%s\n", string(out[0:n]))
	dc.Cleanup()
}

Acknowledgments

The code was taken from https://github.com/grailbio/base/tree/master/compress/libdeflate and the libdeflate library updated.

Modifications:

• A build constraint for arm64 was removed. The code runs fine on apple m1 (arm64)
• Avoid accidentially using slow stdlib gzip/zlib/deflate. Now needs explict build tag disable_libdefldate
• added actualDecompressor.Multistream(false) to align libdeflate and stdlib wrappers

code embedded/derived from:

• https://github.com/ebiggers/libdeflate
• https://github.com/grailbio/base/tree/0d762ae/compress/libdeflate @ 0d762ae / 2023-04-14