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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.
// The txtar-x command extracts a txtar archive to a filesystem.
//
// Usage:
//
// txtar-x [-C root-dir] saved.txt
//
// See https://godoc.org/golang.org/x/tools/txtar for details of the format
// and how to parse a txtar file.
package main
import (
"flag"
"fmt"
"io"
"log"
"os"
"github.com/rogpeppe/go-internal/txtar"
)
var (
extractDir = flag.String("C", ".", "directory to extract files into")
)
func usage() {
fmt.Fprintf(os.Stderr, "usage: txtar-x [flags] [file]\n")
flag.PrintDefaults()
}
func main() {
os.Exit(main1())
}
func main1() int {
flag.Usage = usage
flag.Parse()
if flag.NArg() > 1 {
usage()
return 2
}
log.SetPrefix("txtar-x: ")
log.SetFlags(0)
var a *txtar.Archive
if flag.NArg() == 0 {
data, err := io.ReadAll(os.Stdin)
if err != nil {
log.Printf("cannot read stdin: %v", err)
return 1
}
a = txtar.Parse(data)
} else {
a1, err := txtar.ParseFile(flag.Arg(0))
if err != nil {
log.Print(err)
return 1
}
a = a1
}
if err := txtar.Write(a, *extractDir); err != nil {
log.Print(err)
return 1
}
return 0
}
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