mirror of
https://github.com/mudler/luet.git
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79 lines
2.3 KiB
Go
79 lines
2.3 KiB
Go
// Copyright © 2019 Ettore Di Giacinto <mudler@gentoo.org>
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this program; if not, see <http://www.gnu.org/licenses/>.
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package helpers
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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copy "github.com/otiai10/copy"
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)
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// Exists reports whether the named file or directory exists.
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func Exists(name string) bool {
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if _, err := os.Stat(name); err != nil {
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if os.IsNotExist(err) {
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return false
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}
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}
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return true
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}
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func Read(file string) (string, error) {
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dat, err := ioutil.ReadFile(file)
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if err != nil {
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return "", err
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}
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return string(dat), nil
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}
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func ensureDir(fileName string) {
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dirName := filepath.Dir(fileName)
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if _, serr := os.Stat(dirName); serr != nil {
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merr := os.MkdirAll(dirName, os.ModePerm) // FIXME: It should preserve permissions from src to dst instead
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if merr != nil {
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panic(merr)
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}
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}
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}
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// CopyFile copies the contents of the file named src to the file named
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// by dst. The file will be created if it does not already exist. If the
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// destination file exists, all it's contents will be replaced by the contents
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// of the source file. The file mode will be copied from the source and
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// the copied data is synced/flushed to stable storage.
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func CopyFile(src, dst string) (err error) {
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return copy.Copy(src, dst)
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}
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func IsDirectory(path string) (bool, error) {
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fileInfo, err := os.Stat(path)
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if err != nil {
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return false, err
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}
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return fileInfo.IsDir(), err
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}
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// CopyDir recursively copies a directory tree, attempting to preserve permissions.
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// Source directory must exist, destination directory must *not* exist.
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// Symlinks are ignored and skipped.
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func CopyDir(src string, dst string) (err error) {
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src = filepath.Clean(src)
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dst = filepath.Clean(dst)
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return copy.Copy(src, dst)
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}
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