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// Copyright 2013 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.
package tar_test
import (
"archive/tar"
"bytes"
"fmt"
"io"
"log"
"os"
)
func Example() {
// Create a buffer to write our archive to.
buf := new(bytes.Buffer)
// Create a new tar archive.
tw := tar.NewWriter(buf)
// Add some files to the archive.
var files = []struct {
Name, Body string
}{
{"readme.txt", "This archive contains some text files."},
{"gopher.txt", "Gopher names:\nGeorge\nGeoffrey\nGonzo"},
{"todo.txt", "Get animal handling licence."},
}
for _, file := range files {
hdr := &tar.Header{
Name: file.Name,
Size: int64(len(file.Body)),
}
if err := tw.WriteHeader(hdr); err != nil {
log.Fatalln(err)
}
if _, err := tw.Write([]byte(file.Body)); err != nil {
log.Fatalln(err)
}
}
// Make sure to check the error on Close.
if err := tw.Close(); err != nil {
log.Fatalln(err)
}
// Open the tar archive for reading.
r := bytes.NewReader(buf.Bytes())
tr := tar.NewReader(r)
// Iterate through the files in the archive.
for {
hdr, err := tr.Next()
if err == io.EOF {
// end of tar archive
break
}
if err != nil {
log.Fatalln(err)
}
fmt.Printf("Contents of %s:\n", hdr.Name)
if _, err := io.Copy(os.Stdout, tr); err != nil {
log.Fatalln(err)
}
fmt.Println()
}
// Output:
// Contents of readme.txt:
// This archive contains some text files.
// Contents of gopher.txt:
// Gopher names:
// George
// Geoffrey
// Gonzo
// Contents of todo.txt:
// Get animal handling licence.
}
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