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/*
* Package xz examples
*
* Author: Michael Cross <https://github.com/xi2>
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*/
package xz_test
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"log"
"os"
"path/filepath"
"github.com/xi2/xz"
)
func ExampleNewReader() {
// load some XZ data into memory
data, err := ioutil.ReadFile(
filepath.Join("testdata", "xz-utils", "good-1-check-sha256.xz"))
if err != nil {
log.Fatal(err)
}
// create an xz.Reader to decompress the data
r, err := xz.NewReader(bytes.NewReader(data), 0)
if err != nil {
log.Fatal(err)
}
// write the decompressed data to os.Stdout
_, err = io.Copy(os.Stdout, r)
if err != nil {
log.Fatal(err)
}
// Output:
// Hello
// World!
}
func ExampleReader_Multistream() {
// load some XZ data into memory
data, err := ioutil.ReadFile(
filepath.Join("testdata", "xz-utils", "good-1-check-sha256.xz"))
if err != nil {
log.Fatal(err)
}
// create a MultiReader that will read the data twice
mr := io.MultiReader(bytes.NewReader(data), bytes.NewReader(data))
// create an xz.Reader from the MultiReader
r, err := xz.NewReader(mr, 0)
if err != nil {
log.Fatal(err)
}
// set Multistream mode to false
r.Multistream(false)
// decompress the first stream
_, err = io.Copy(os.Stdout, r)
if err != nil {
log.Fatal(err)
}
fmt.Println("Read first stream")
// reset the XZ reader so it is ready to read the second stream
err = r.Reset(nil)
if err != nil {
log.Fatal(err)
}
// set Multistream mode to false again
r.Multistream(false)
// decompress the second stream
_, err = io.Copy(os.Stdout, r)
if err != nil {
log.Fatal(err)
}
fmt.Println("Read second stream")
// reset the XZ reader so it is ready to read further streams
err = r.Reset(nil)
// confirm that the second stream was the last one
if err == io.EOF {
fmt.Println("No more streams")
}
// Output:
// Hello
// World!
// Read first stream
// Hello
// World!
// Read second stream
// No more streams
}
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