PackageManager/Client/Filesystem/CopyFile.go

package Filesystem

import (
	"io/fs"
	"io/ioutil"
	"os"
	"path/filepath"
)

func CopyFile(src, dest string) error {
	var (
		input        []byte
		fileInfo     fs.FileInfo
		srcBasePath  string
		destBasePath string
		err          error
	)

	srcBasePath = filepath.Dir(src)
	destBasePath = filepath.Dir(dest)

	fileInfo, err = os.Stat(srcBasePath)
	if err != nil {
		return err
	}

	err = os.MkdirAll(destBasePath, fileInfo.Mode())
	if err != nil {
		return err
	}

	fileInfo, err = os.Stat(src)
	if err != nil {
		return err
	}

	input, err = ioutil.ReadFile(src)
	if err != nil {
		return err
	}

	err = ioutil.WriteFile(dest, input, fileInfo.Mode())
	if err != nil {
		return err
	}

	return nil
}