smart_streetlights/common/util/gzip.go

package util

import (
	"bytes"
	"compress/gzip"
	"io/ioutil"
)

func GzipEncode(in []byte) ([]byte, error) {
	var (
		buffer bytes.Buffer
		out    []byte
		err    error
	)
	writer, _ := gzip.NewWriterLevel(&buffer, gzip.BestSpeed)
	_, err = writer.Write(in)
	if err != nil {
		writer.Close()
		return out, err
	}
	err = writer.Close()
	if err != nil {
		return out, err
	}

	return buffer.Bytes(), nil
}

func GzipDecode(in []byte) ([]byte, error) {
	reader, err := gzip.NewReader(bytes.NewReader(in))
	if err != nil {
		var out []byte
		return out, err
	}
	defer reader.Close()

	return ioutil.ReadAll(reader)
}