// Copyright (C) 2021 The Syncthing Authors. // // This Source Code Form is subject to the terms of the Mozilla Public // License, v. 2.0. If a copy of the MPL was not distributed with this file, // You can obtain one at https://mozilla.org/MPL/2.0/. // +build ignore package main import ( "bufio" "flag" "fmt" "io/ioutil" "log" "os" "os/exec" "path/filepath" "strings" ) func main() { var path string flag.StringVar(&path, "t", "", "Name of file to prune") flag.Parse() filepath.Walk(path, func(path string, info os.FileInfo, err error) error { if err != nil { log.Fatal(err) } if !info.Mode().IsRegular() { return nil } err = pruneInterfaceCheck(path, info.Size()) if err != nil { log.Fatal(err) } err = exec.Command("goimports", "-w", path).Run() if err != nil { log.Fatal(err) } return nil }) } func pruneInterfaceCheck(path string, size int64) error { fd, err := os.Open(path) if err != nil { return err } defer fd.Close() tmp, err := ioutil.TempFile(".", "") if err != nil { return err } scanner := bufio.NewScanner(fd) for scanner.Scan() { line := scanner.Text() if strings.HasPrefix(strings.TrimSpace(line), "var _ ") { continue } if _, err := tmp.WriteString(line + "\n"); err != nil { os.Remove(tmp.Name()) return err } } if err := fd.Close(); err != nil { return err } if err := os.Remove(path); err != nil { return err } return os.Rename(tmp.Name(), path) }