| // Copyright 2017 Google Inc. All Rights Reserved. |
| // |
| // 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 main |
| |
| import ( |
| "io/ioutil" |
| "log" |
| "os" |
| "os/exec" |
| "strings" |
| ) |
| |
| // Run goimports to format and update imports statements in generated code. |
| func goimports(filename string, inputBytes []byte) (outputBytes []byte, err error) { |
| if false { |
| return inputBytes, nil |
| } |
| cmd := exec.Command(os.Getenv("GOPATH") + "/bin/goimports") |
| input, _ := cmd.StdinPipe() |
| output, _ := cmd.StdoutPipe() |
| cmderr, _ := cmd.StderrPipe() |
| err = cmd.Start() |
| if err != nil { |
| return |
| } |
| input.Write(inputBytes) |
| input.Close() |
| |
| outputBytes, _ = ioutil.ReadAll(output) |
| errors, _ := ioutil.ReadAll(cmderr) |
| if len(errors) > 0 { |
| errors := strings.Replace(string(errors), "<standard input>", filename, -1) |
| log.Printf("Syntax errors in generated code:\n%s", errors) |
| return inputBytes, nil |
| } |
| |
| return |
| } |
