1// Copyright 2024 Google Inc. All rights reserved. 2// 3// Licensed under the Apache License, Version 2.0 (the "License"); 4// you may not use this file except in compliance with the License. 5// You may obtain a copy of the License at 6// 7// http://www.apache.org/licenses/LICENSE-2.0 8// 9// Unless required by applicable law or agreed to in writing, software 10// distributed under the License is distributed on an "AS IS" BASIS, 11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12// See the License for the specific language governing permissions and 13// limitations under the License. 14 15package find_input_delta_lib 16 17import ( 18 "io/fs" 19 "os" 20) 21 22// OsFs provides a minimal implementation so that we can use testing/fstest for 23// unit tests. 24var OsFs fileSystem = osFS{} 25 26type fileSystem interface { 27 Open(path string) (fs.File, error) 28 Stat(path string) (os.FileInfo, error) 29 ReadFile(path string) ([]byte, error) 30} 31 32// osFS implements fileSystem using the local disk. 33type osFS struct{} 34 35func (osFS) Open(path string) (fs.File, error) { return os.Open(path) } 36func (osFS) Stat(path string) (os.FileInfo, error) { return os.Stat(path) } 37func (osFS) ReadFile(path string) ([]byte, error) { return os.ReadFile(path) } 38