pathutils/pathutils.go

package pathutils

import (
	"io"
	"os"
	"path/filepath"
	"strings"
)

func GetCurrentDirectory() (string, error) {
	dir, err := filepath.Abs(filepath.Dir(os.Args[0]))
	return strings.Replace(dir, "\\", "/", -1), err
}

func PathExists(path string) (bool, error) {
	_, err := os.Stat(path)
	if err == nil {
		return true, nil
	}
	if os.IsNotExist(err) {
		return false, nil
	}
	return false, err
}

func CopyFile(dstName, srcName string) (written int64, err error) {
	src, err := os.Open(srcName)
	if err != nil {
		return 0, err
	}
	fi, err := os.Stat(srcName)
	if err != nil {
		return 0, err
	}
	perm := fi.Mode()
	defer src.Close()
	dst, err := os.OpenFile(dstName, os.O_WRONLY|os.O_CREATE, perm)
	if err != nil {
		return 0, err
	}
	defer dst.Close()
	return io.Copy(dst, src)
}

func MkDirIfNotExist(path string, perm os.FileMode) error {
	if r, err := PathExists(path); (!r) || (err != nil) {
		if err := os.MkdirAll(path, perm); err != nil {
			return err
		}
	}
	return nil
}