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