| // 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 protostatos |
| |
| import ( |
| "context" |
| "io" |
| "os" |
| "path/filepath" |
| ) |
| |
| import ( |
| "go.uber.org/multierr" |
| ) |
| |
| type fileWalker struct { |
| filenames []string |
| } |
| |
| func newFileWalker(filenames []string) *fileWalker { |
| return &fileWalker{ |
| filenames: filenames, |
| } |
| } |
| |
| func (f *fileWalker) Walk(ctx context.Context, fu func(io.Reader) error) error { |
| for _, filename := range f.filenames { |
| if filepath.Ext(filename) != ".proto" { |
| continue |
| } |
| file, err := os.Open(filename) |
| if err != nil { |
| return err |
| } |
| if err := fu(file); err != nil { |
| return multierr.Append(err, file.Close()) |
| } |
| if err := file.Close(); err != nil { |
| return err |
| } |
| } |
| return nil |
| } |