func parseSyncPackage(r *tar.Reader) (pkg *pkginfo.Package, err error) {
var hdr *tar.Header
if hdr, err = r.Next(); err != nil {
return nil, err
}
if hdr.Typeflag != tar.TypeDir {
return nil, errors.New(fmt.Sprintf("expected directory, found %s (%d)", hdr.Name, hdr.Typeflag))
}
dirPath := hdr.Name
descPath := path.Join(dirPath, "desc")
depsPath := path.Join(dirPath, "depends")
var desc *pkginfo.Desc
var deps *pkginfo.Deps
for desc == nil || deps == nil {
if hdr, err = tarMustNext(r.Next()); err != nil {
return
}
if hdr.Typeflag != tar.TypeReg && hdr.Typeflag != tar.TypeRegA {
err = errors.New(fmt.Sprintf("expected file, found %d (%s)", hdr.Typeflag, hdr.Name))
return
}
pkgReader := paclist.NewReader(r)
switch hdr.Name {
default:
err = errors.New(fmt.Sprintf("expected %s | %s, found %s", descPath, depsPath, hdr.Name))
case descPath:
desc, err = pkginfo.DecodeDesc(pkgReader)
case depsPath:
deps, err = pkginfo.DecodeDeps(pkgReader)
}
if err != nil {
err = errors.New(fmt.Sprintf("couldn't load package %s: %s", dirPath, err))
return
}
}
return &pkginfo.Package{*desc, *deps}, nil
}
func main() {
fmt.Println(paclist.Decode(paclist.NewReader(os.Stdin)))
}