feat: add support for all upstream dist to file package (#226)

use specific function for unix goos and fallback for non-unix systems

file/fileinfo.go

@@ -43,6 +43,15 @@ func Lstat(name string) (FileInfo, error) {
 	return stat(name, os.Lstat)
 }
 
+func stat(name string, statFunc func(name string) (os.FileInfo, error)) (FileInfo, error) {
+	info, err := statFunc(name)
+	if err != nil {
+		return nil, err
+	}
+
+	return wrap(info)
+}
+
 // Wrap wraps the given os.FileInfo and returns a FileInfo in order to expose
 // the UID and GID in a uniform manner across operating systems.
 func Wrap(info os.FileInfo) (FileInfo, error) {

file/fileinfo_windows.go → file/fileinfo_other.go

@@ -15,21 +15,14 @@
 // specific language governing permissions and limitations
 // under the License.
 
+//go:build !unix
+
 package file
 
 import (
 	"os"
 )
 
-func stat(name string, statFunc func(name string) (os.FileInfo, error)) (FileInfo, error) {
-	info, err := statFunc(name)
-	if err != nil {
-		return nil, err
-	}
-
-	return wrap(info)
-}
-
 func wrap(info os.FileInfo) (FileInfo, error) {
 	return fileInfo{FileInfo: info}, nil
 }

file/fileinfo_unix.go

@@ -25,15 +25,6 @@ import (
 	"syscall"
 )
 
-func stat(name string, statFunc func(name string) (os.FileInfo, error)) (FileInfo, error) {
-	info, err := statFunc(name)
-	if err != nil {
-		return nil, err
-	}
-
-	return wrap(info)
-}
-
 func wrap(info os.FileInfo) (FileInfo, error) {
 	stat, ok := info.Sys().(*syscall.Stat_t)
 	if !ok {