Tar and Un-tar Gzip files in Golang
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package main | |
import ( | |
"archive/tar" | |
"compress/gzip" | |
"io" | |
"io/ioutil" | |
"log" | |
"os" | |
"strings" | |
) | |
func walk(path, r string, tw *tar.Writer) error { | |
if tw == nil { | |
panic("tw must not be nil") | |
} | |
f, err := os.Open(path) | |
if err != nil { | |
return err | |
} | |
defer f.Close() | |
i, err := f.Stat() | |
if err != nil { | |
return err | |
} | |
h, err := tar.FileInfoHeader(i, "") | |
if err != nil { | |
return err | |
} | |
h.Name = strings.TrimPrefix(path, r) | |
if err = tw.WriteHeader(h); err != nil { | |
return err | |
} | |
if i.IsDir() { | |
fs, err := ioutil.ReadDir(path) | |
if err != nil { | |
return err | |
} | |
for i := range fs { | |
p := path + "/" + fs[i].Name() | |
if err = walk(p, r, tw); err != nil { | |
return err | |
} | |
} | |
return nil | |
} | |
_, err = io.Copy(tw, f) | |
return err | |
} | |
func main() { | |
log.SetFlags(log.Lshortfile) | |
l := len(os.Args) | |
if l < 3 { | |
log.Fatal("Usage: zipper <source file>... <dist file>.tar.gz") | |
} | |
fs := os.Args[1 : l-1] | |
dist, err := os.Create(os.Args[l-1]) | |
if err != nil { | |
log.Fatalln(err) | |
} | |
defer dist.Close() | |
gz := gzip.NewWriter(dist) | |
tw := tar.NewWriter(gz) | |
for i := range fs { | |
info, err := os.Stat(fs[i]) | |
if err != nil { | |
log.Println(err) | |
continue | |
} | |
r := strings.TrimSuffix(fs[i], "/") | |
r = strings.TrimSuffix(r, info.Name()) | |
err = walk(fs[i], r, tw) | |
if err != nil { | |
log.Print(err) | |
} | |
} | |
if err = tw.Close(); err != nil { | |
log.Print(err) | |
} | |
if err = gz.Close(); err != nil { | |
log.Print(err) | |
} | |
} |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
package main | |
import ( | |
"archive/tar" | |
"compress/gzip" | |
"io" | |
"log" | |
"os" | |
) | |
func main() { | |
log.SetFlags(log.Lshortfile) | |
l := len(os.Args) | |
if l < 3 { | |
log.Fatal("Usage: zipper <source file>... <dist file>.tar.gz") | |
} | |
fs := os.Args[1 : l-1] | |
dist, err := os.Create(os.Args[l-1]) | |
if err != nil { | |
log.Fatalln(err) | |
} | |
defer dist.Close() | |
gz := gzip.NewWriter(dist) | |
defer gz.Close() | |
tw := tar.NewWriter(gz) | |
defer tw.Close() | |
for i := range fs { | |
f, err := os.Open(fs[i]) | |
if err != nil { | |
log.Println(err) | |
continue | |
} | |
defer f.Close() | |
info, err := f.Stat() | |
if err != nil { | |
log.Println(err) | |
continue | |
} | |
h, err := tar.FileInfoHeader(info, "") | |
if err != nil { | |
log.Println(err) | |
continue | |
} | |
if err = tw.WriteHeader(h); err != nil { | |
log.Println(err) | |
continue | |
} | |
if _, err = io.Copy(tw, f); err != nil { | |
log.Println(err) | |
} | |
} | |
} |
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