minio-into-ck/util/util.go

package util

import (
	"github.com/klauspost/compress/zstd"
	"os/exec"
	"strings"
)

func ExpandShellString(s string) (string, error) {
	if strings.Contains(s, "$") {
		// Start a shell to expand the environment variables
		cmd := exec.Command("sh", "-c", "echo "+s)
		out, err := cmd.Output()
		if err != nil {
			return "", err
		}
		s = strings.TrimSpace(string(out))
	}
	return s, nil
}

func ExpandShellStringInfallible(s string) string {
	expanded, err := ExpandShellString(s)
	if err != nil {
		return s
	}
	return expanded
}

func DecompressZstdBuffer(input []byte) ([]byte, error) {
	decoder, err := zstd.NewReader(nil)
	if err != nil {
		return nil, err
	}
	defer decoder.Close()
	return decoder.DecodeAll(input, nil)
}