Reader.Multistream in Go

Posted by GoDoc
Public (Editable by Users)

Multistream controls whether the reader supports multistream files.

Go
Edit
package main

import (
    "bytes"
    "compress/gzip"
    "fmt"
    "io"
    "log"
    "os"
    "time"
)

func main() {
    var buf bytes.Buffer
    zw := gzip.NewWriter(&buf)

    var files = []struct {
        name    string
        comment string
        modTime time.Time
        data    string
    }{
        {"file-1.txt", "file-header-1", time.Date(2006, time.February, 1, 3, 4, 5, 0, time.UTC), "Hello Gophers - 1"},
        {"file-2.txt", "file-header-2", time.Date(2007, time.March, 2, 4, 5, 6, 1, time.UTC), "Hello Gophers - 2"},
    }

    for _, file := range files {
        zw.Name = file.name
        zw.Comment = file.comment
        zw.ModTime = file.modTime

        if _, err := zw.Write([]byte(file.data)); err != nil {
            log.Fatal(err)
        }

        if err := zw.Close(); err != nil {
            log.Fatal(err)
        }

        zw.Reset(&buf)
    }

    zr, err := gzip.NewReader(&buf)
    if err != nil {
        log.Fatal(err)
    }

    for {
        zr.Multistream(false)
        fmt.Printf("Name: %s\nComment: %s\nModTime: %s\n\n", zr.Name, zr.Comment, zr.ModTime.UTC())

        if _, err := io.Copy(os.Stdout, zr); err != nil {
            log.Fatal(err)
        }

        fmt.Print("\n\n")

        err = zr.Reset(&buf)
        if err == io.EOF {
            break
        }
        if err != nil {
            log.Fatal(err)
        }
    }

    if err := zr.Close(); err != nil {
        log.Fatal(err)
    }
}