zip/example_test.go

114 lines
2.2 KiB
Go

// Copyright 2012 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 zip_test
import (
"bytes"
"fmt"
"io"
"log"
"os"
"github.com/alexmullins/zip"
)
func ExampleWriter() {
// Create a buffer to write our archive to.
buf := new(bytes.Buffer)
// Create a new zip archive.
w := zip.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.\nWrite more examples."},
}
for _, file := range files {
f, err := w.Create(file.Name)
if err != nil {
log.Fatal(err)
}
_, err = f.Write([]byte(file.Body))
if err != nil {
log.Fatal(err)
}
}
// Make sure to check the error on Close.
err := w.Close()
if err != nil {
log.Fatal(err)
}
}
func ExampleReader() {
// Open a zip archive for reading.
r, err := zip.OpenReader("testdata/readme.zip")
if err != nil {
log.Fatal(err)
}
defer r.Close()
// Iterate through the files in the archive,
// printing some of their contents.
for _, f := range r.File {
fmt.Printf("Contents of %s:\n", f.Name)
rc, err := f.Open()
if err != nil {
log.Fatal(err)
}
_, err = io.CopyN(os.Stdout, rc, 68)
if err != nil {
log.Fatal(err)
}
rc.Close()
fmt.Println()
}
// Output:
// Contents of README:
// This is the source code repository for the Go programming language.
}
func ExampleWriter_Encrypt() {
contents := []byte("Hello World")
// write a password zip
raw := new(bytes.Buffer)
zipw := zip.NewWriter(raw)
w, err := zipw.Encrypt("hello.txt", "golang")
if err != nil {
log.Fatal(err)
}
_, err = io.Copy(w, bytes.NewReader(contents))
if err != nil {
log.Fatal(err)
}
zipw.Close()
// read the password zip
zipr, err := zip.NewReader(bytes.NewReader(raw.Bytes()), int64(raw.Len()))
if err != nil {
log.Fatal(err)
}
for _, z := range zipr.File {
z.SetPassword("golang")
rr, err := z.Open()
if err != nil {
log.Fatal(err)
}
_, err = io.Copy(os.Stdout, rr)
if err != nil {
log.Fatal(err)
}
rr.Close()
}
// Output:
// Hello World
}