You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: utils.go
    path of file: ./repos/podman/vendor/github.com/mistifyio/go-zfs/v3
    
    the code of the file until where you have to start completion: package zfs

import (
	"bytes"
	"errors"
	"fmt"
	"io"
	"os/exec"
	"regexp"
	"runtime"
	"strconv"
	"strings"

	"github.com/google/uuid"
)

type command struct {
	Command string
	Stdin   io.Reader
	Stdout  io.Writer
}

func (c *command
    
func unescapeFilepath(path string) (string, error) {
	buf := make([]byte, 0, len(path))
	llen := len(path)
	for i := 0; i < llen; {
		if path[i] == '\\' {
			if llen < i+4 {
				return "", fmt.Errorf("invalid octal code: too short")
			}
			octalCode := path[(i + 1):(i + 4)]
			val, err := strconv.ParseUint(octalCode, 8, 8)
			if err != nil {
				return "", fmt.Errorf("invalid octal code: %w", err)
			}
			buf = append(buf, byte(val))
			i += 4
		} else {
			buf = append(buf, path[i])
			i++
		}
	}
	return string(buf), nil
}