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compression_cgo.go
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/
compression_cgo.go
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// Copyright (C) MongoDB, Inc. 2017-present.
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
// +build cgo
package driver
import (
"bytes"
"io"
"github.com/DataDog/zstd"
)
func zstdCompress(in []byte, level int) ([]byte, error) {
var b bytes.Buffer
w := zstd.NewWriterLevel(&b, level)
_, err := w.Write(in)
if err != nil {
return nil, err
}
err = w.Close()
if err != nil {
return nil, err
}
return b.Bytes(), nil
}
func zstdDecompress(in []byte, size int32) ([]byte, error) {
out := make([]byte, size)
decompressor := zstd.NewReader(bytes.NewReader(in))
_, err := io.ReadFull(decompressor, out)
if err != nil {
return nil, err
}
return out, nil
}