9f82b75e57
* removed packer.Cache and references since packer.Cache is never used except in the download step. The download step now uses the new func packer.CachePath(targetPath) for this, the behavior is the same. * removed download code from packer that was reimplemented into the go-getter library: progress bar, http download restart, checksuming from file, skip already downloaded files, symlinking, make a download cancellable by context. * on windows if packer is running without symlinking rights and we are getting a local file, the file will be copied instead to avoid errors. * added unit tests for step_download that are now CI tested on windows, mac & linux. * files are now downloaded under cache dir `sha1(filename + "?checksum=" + checksum) + file_extension` * since the output dir is based on the source url and the checksum, when the checksum fails, the file is auto deleted. * a download file is protected and locked by a file lock, * updated docs * updated go modules and vendors
41 lines
878 B
Go
41 lines
878 B
Go
// Copyright 2014-2017 Ulrich Kunitz. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
// +build ignore
|
|
|
|
package main
|
|
|
|
import (
|
|
"bytes"
|
|
"io"
|
|
"log"
|
|
"os"
|
|
|
|
"github.com/ulikunitz/xz"
|
|
)
|
|
|
|
func main() {
|
|
const text = "The quick brown fox jumps over the lazy dog.\n"
|
|
var buf bytes.Buffer
|
|
// compress text
|
|
w, err := xz.NewWriter(&buf)
|
|
if err != nil {
|
|
log.Fatalf("xz.NewWriter error %s", err)
|
|
}
|
|
if _, err := io.WriteString(w, text); err != nil {
|
|
log.Fatalf("WriteString error %s", err)
|
|
}
|
|
if err := w.Close(); err != nil {
|
|
log.Fatalf("w.Close error %s", err)
|
|
}
|
|
// decompress buffer and write output to stdout
|
|
r, err := xz.NewReader(&buf)
|
|
if err != nil {
|
|
log.Fatalf("NewReader error %s", err)
|
|
}
|
|
if _, err = io.Copy(os.Stdout, r); err != nil {
|
|
log.Fatalf("io.Copy error %s", err)
|
|
}
|
|
}
|