go - tar typeflag directory or file when tar'ing directories in golang -

i'm not sure how set header.typeflag when tar'ing directory files , subdirectories. know if add

header.typeflag = '0' 

it tar files not directories. how set typeflag when file or directory when untar'ing can pass in case statement tar.typedir

example taken https://www.socketloop.com/tutorials/golang-archive-directory-with-tar-and-gzip

package main   import (          "archive/tar"          "compress/gzip"          "flag"          "fmt"          "io"          "os"          "strings"          "path/filepath"  )   func checkerror(err error) {           if err != nil {                  fmt.println(err)                  os.exit(1)          }  }   func main() {           flag.parse() // arguments command line           destinationfile := flag.arg(0)           if destinationfile == "" {                  fmt.println("usage : gotar destinationfile.tar.gz source")                  os.exit(1)          }           sourcedir := flag.arg(1)           if sourcedir == "" {                  fmt.println("usage : gotar destinationfile.tar.gz source-directory")                  os.exit(1)          }           dir, err := os.open(sourcedir)           checkerror(err)           defer dir.close()           files, err := dir.readdir(0) // grab files list           checkerror(err)           tarfile, err := os.create(destinationfile)           checkerror(err)           defer tarfile.close()          var filewriter io.writecloser = tarfile           if strings.hassuffix(destinationfile, ".gz") {                  filewriter = gzip.newwriter(tarfile) // add gzip filter                  defer filewriter.close()            // if user add .gz in destination filename          }           tarfilewriter := tar.newwriter(filewriter)          defer tarfilewriter.close()           _, fileinfo := range files {                   if fileinfo.isdir() {                     continue                  }                   // see https://www.socketloop.com/tutorials/go-file-path-independent-of-operating-system                   file, err := os.open(dir.name() + string(filepath.separator) + fileinfo.name())                   checkerror(err)                   defer file.close()                    // prepare tar header                   header := new(tar.header)                  header.name = file.name()                  header.size = fileinfo.size()                  header.mode = int64(fileinfo.mode())                  header.modtime = fileinfo.modtime()                    err = tarfilewriter.writeheader(header)                   checkerror(err)                   _, err = io.copy(tarfilewriter, file)                   checkerror(err)          }   } 

if files on disk, looks are, part done you. have @ fileinfoheader. set typeflag based on can extrapolate resource (directory or file in case.)

for complete list of available options see the tar standard docs