engigu
46 lines
935 B
Go
46 lines
935 B
Go
package utils
|
|
|
|
import (
|
|
"bytes"
|
|
"compress/zlib"
|
|
"encoding/base64"
|
|
"io"
|
|
)
|
|
|
|
// CompressToBase64 compresses data using zlib and encodes to base64
|
|
func CompressToBase64(data string) (string, error) {
|
|
if data == "" {
|
|
return "", nil
|
|
}
|
|
var buf bytes.Buffer
|
|
zw := zlib.NewWriter(&buf)
|
|
if _, err := zw.Write([]byte(data)); err != nil {
|
|
return "", err
|
|
}
|
|
if err := zw.Close(); err != nil {
|
|
return "", err
|
|
}
|
|
return base64.StdEncoding.EncodeToString(buf.Bytes()), nil
|
|
}
|
|
|
|
// DecompressFromBase64 decodes base64 and decompresses zlib data
|
|
func DecompressFromBase64(data string) (string, error) {
|
|
if data == "" {
|
|
return "", nil
|
|
}
|
|
decoded, err := base64.StdEncoding.DecodeString(data)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
zr, err := zlib.NewReader(bytes.NewReader(decoded))
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
defer zr.Close()
|
|
result, err := io.ReadAll(zr)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return string(result), nil
|
|
}
|