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https://github.com/golang/go
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c32140fa94
Now that filepath.WalkDir is available, it is more efficient and should be used in place of filepath.Walk. Update the tree to reflect best practices. As usual, the code compiled with Go 1.4 during bootstrap is excluded. (In this CL, that's only cmd/dist.) For #42027. Change-Id: Ib0f7b1e43e50b789052f9835a63ced701d8c411c Reviewed-on: https://go-review.googlesource.com/c/go/+/267719 Trust: Russ Cox <rsc@golang.org> Run-TryBot: Russ Cox <rsc@golang.org> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Rob Pike <r@golang.org>
69 lines
2.0 KiB
Go
69 lines
2.0 KiB
Go
// run
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// Copyright 2020 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Check that batch files are maintained as CRLF files (consistent
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// behavior on all operating systems). See golang.org/issue/37791.
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package main
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import (
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"bytes"
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"fmt"
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"io/ioutil"
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"log"
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"os"
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"path/filepath"
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"runtime"
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"strings"
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)
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func main() {
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// Ensure that the GOROOT/src/all.bat file exists and has strict CRLF line endings.
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enforceBatchStrictCRLF(filepath.Join(runtime.GOROOT(), "src", "all.bat"))
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// Walk the entire Go repository source tree (without GOROOT/pkg),
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// skipping directories that start with "." and named "testdata",
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// and ensure all .bat files found have exact CRLF line endings.
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err := filepath.WalkDir(runtime.GOROOT(), func(path string, d os.DirEntry, err error) error {
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if err != nil {
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return err
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}
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if d.IsDir() && (strings.HasPrefix(d.Name(), ".") || d.Name() == "testdata") {
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return filepath.SkipDir
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}
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if path == filepath.Join(runtime.GOROOT(), "pkg") {
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// GOROOT/pkg is known to contain generated artifacts, not source code.
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// Skip it to avoid false positives. (Also see golang.org/issue/37929.)
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return filepath.SkipDir
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}
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if filepath.Ext(d.Name()) == ".bat" {
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enforceBatchStrictCRLF(path)
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}
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return nil
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})
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if err != nil {
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log.Fatalln(err)
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}
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}
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func enforceBatchStrictCRLF(path string) {
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b, err := ioutil.ReadFile(path)
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if err != nil {
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log.Fatalln(err)
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}
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cr, lf := bytes.Count(b, []byte{13}), bytes.Count(b, []byte{10})
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crlf := bytes.Count(b, []byte{13, 10})
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if cr != crlf || lf != crlf {
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if rel, err := filepath.Rel(runtime.GOROOT(), path); err == nil {
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// Make the test failure more readable by showing a path relative to GOROOT.
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path = rel
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}
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fmt.Printf("Windows batch file %s does not use strict CRLF line termination.\n", path)
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fmt.Printf("Please convert it to CRLF before checking it in due to golang.org/issue/37791.\n")
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os.Exit(1)
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}
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}
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