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// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build ignore
// +build ignore
// Savedir archives a directory tree as a txtar archive printed to standard output.
//
// Usage:
//
// go run savedir.go /path/to/dir >saved.txt
//
// Typically the tree is later extracted during a test with tg.extract("testdata/saved.txt").
package main
import (
"cmd/go/internal/str"
"flag"
"fmt"
"internal/txtar"
"io/fs"
"log"
"os"
"path/filepath"
"strings"
"unicode/utf8"
)
func usage() {
fmt.Fprintf(os.Stderr, "usage: go run savedir.go dir >saved.txt\n")
os.Exit(2)
}
const goCmd = "vgo"
func main() {
flag.Usage = usage
flag.Parse()
if flag.NArg() != 1 {
usage()
}
log.SetPrefix("savedir: ")
log.SetFlags(0)
dir := flag.Arg(0)
a := new(txtar.Archive)
dir = filepath.Clean(dir)
filepath.WalkDir(dir, func(path string, info fs.DirEntry, err error) error {
if path == dir {
return nil
}
name := info.Name()
if strings.HasPrefix(name, ".") {
if info.IsDir() {
return filepath.SkipDir
}
return nil
}
if !info.Type().IsRegular() {
return nil
}
data, err := os.ReadFile(path)
if err != nil {
log.Fatal(err)
}
if !utf8.Valid(data) {
log.Printf("%s: ignoring invalid UTF-8 data", path)
return nil
}
a.Files = append(a.Files, txtar.File{Name: str.TrimFilePathPrefix(path, dir), Data: data})
return nil
})
data := txtar.Format(a)
os.Stdout.Write(data)
}