| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package files |
| |
| import ( |
| "io/fs" |
| "os" |
| "path/filepath" |
| ) |
| |
| func FileExists(path string) bool { |
| _, err := os.Stat(path) |
| return err == nil |
| } |
| |
| func FileEmpty(path string) (bool, error) { |
| file, err := os.Stat(path) |
| if err != nil { |
| return true, err |
| } |
| return file.Size() == 0, nil |
| } |
| |
| // IsDirWriteable checks if dir is writable by writing and removing a file |
| // to dir. It returns nil if dir is writable. |
| func IsDirWriteable(dir string) error { |
| f := filepath.Join(dir, ".touch") |
| perm := 0o600 |
| if err := os.WriteFile(f, []byte(""), fs.FileMode(perm)); err != nil { |
| return err |
| } |
| return os.Remove(f) |
| } |