| /* |
| Copyright 2017 The Kubernetes Authors. |
| |
| Licensed 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 file |
| |
| import ( |
| "os" |
| ) |
| |
| // FileExists checks if specified file exists. |
| func FileExists(filename string) (bool, error) { |
| if _, err := os.Stat(filename); os.IsNotExist(err) { |
| return false, nil |
| } else if err != nil { |
| return false, err |
| } |
| return true, nil |
| } |
| |
| // FileOrSymlinkExists checks if specified file or symlink exists. |
| func FileOrSymlinkExists(filename string) (bool, error) { |
| if _, err := os.Lstat(filename); os.IsNotExist(err) { |
| return false, nil |
| } else if err != nil { |
| return false, err |
| } |
| return true, nil |
| } |
| |
| // ReadDirNoStat returns a string of files/directories contained |
| // in dirname without calling lstat on them. |
| func ReadDirNoStat(dirname string) ([]string, error) { |
| if dirname == "" { |
| dirname = "." |
| } |
| |
| f, err := os.Open(dirname) |
| if err != nil { |
| return nil, err |
| } |
| defer f.Close() |
| |
| return f.Readdirnames(-1) |
| } |