werf/trdl

package util

import (
    "os"
    "strings"
)

func IsDirExist(path string) (bool, error) {
    fileInfo, err := os.Lstat(path)
    if err != nil {
        if isNotExistErr(err) {
            return false, nil
        }

        return false, err
    }

    return fileInfo.IsDir(), nil
}

func IsRegularFileExist(path string) (bool, error) {
    fileInfo, err := os.Lstat(path)
    if err != nil {
        if isNotExistErr(err) {
            return false, nil
        }

        return false, err
    }

    return fileInfo.Mode().IsRegular(), nil
}

func isNotExistErr(err error) bool {
    return os.IsNotExist(err) || IsNotDirectoryErr(err)
}

func IsNotDirectoryErr(err error) bool {
    return strings.HasSuffix(err.Error(), "not a directory")
}