Siva read-write

siva-read-write.go

package main

import (
	"bytes"
	"fmt"
	"io"
	"io/ioutil"
	"os"
	"time"

	"gopkg.in/src-d/go-siva.v1"
)

const testPath = "./repos/test.siva"

var testFiles = [2]file{
	file{"readme.txt", "This archive contains some text files."},
	file{"gopher.txt", "Gopher names:\nGeorge\nGeoffrey\nGonzo"},
}

type file struct{ Name, Body string }

func main() {
	write(testPath)
	read(testPath)
}

func write(path string) {
	siva := newSiva(testFiles)
	ioutil.WriteFile(path, siva.Bytes(), 0644)
}

func newSiva(files [2]file) *bytes.Buffer {
	buf := new(bytes.Buffer)
	writer := siva.NewWriter(buf)
	defer writer.Close()
	for _, file := range files {
		append(writer, file)
	}
	return buf
}

func append(w siva.Writer, f file) {
	hdr := &siva.Header{
		Name:    f.Name,
		Mode:    0644,
		ModTime: time.Now(),
	}
	w.WriteHeader(hdr)
	w.Write([]byte(f.Body))
}

func read(path string) {
	content, _ := ioutil.ReadFile(path)
	r := siva.NewReader(bytes.NewReader(content))
	i, _ := r.Index()
	for _, e := range i {
		fmt.Printf("\nContents of %s:\n", e.Name)
		fileContent, _ := r.Get(e)
		io.Copy(os.Stdout, fileContent)
		fmt.Println()
	}
}

siva-write.go

package main

import (
	"bytes"
	"io/ioutil"
	"time"

	"gopkg.in/src-d/go-siva.v1"
)

const testPath = "./repos/test.siva"

var testFiles = [2]file{
	file{"readme.txt", "This archive contains some text files."},
	file{"gopher.txt", "Gopher names:\nGeorge\nGeoffrey\nGonzo"},
}

type file struct{ Name, Body string }

func main() {
	write(testPath)
}

func write(path string) {
	siva := newSiva(testFiles)
	ioutil.WriteFile(path, siva.Bytes(), 0644)
}

func newSiva(files [2]file) *bytes.Buffer {
	buf := new(bytes.Buffer)
	writer := siva.NewWriter(buf)
	defer writer.Close()
	for _, file := range files {
		append(writer, file)
	}
	return buf
}

func append(w siva.Writer, f file) {
	hdr := &siva.Header{
		Name:    f.Name,
		Mode:    0644,
		ModTime: time.Now(),
	}
	w.WriteHeader(hdr)
	w.Write([]byte(f.Body))
}