From 592a90d1d4839ee0a61d3f5b9b5d1c63b27efa43 Mon Sep 17 00:00:00 2001
From: Felicitas Pojtinger <felicitas@pojtinger.com>
Date: Sat, 18 Dec 2021 23:42:42 +0100
Subject: [PATCH] feat: Implement `File.ReadAt`

---
 internal/fs/file.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/internal/fs/file.go b/internal/fs/file.go
index 288fd78..dd79981 100644
--- a/internal/fs/file.go
+++ b/internal/fs/file.go
@@ -211,7 +211,11 @@ func (f *File) Read(p []byte) (n int, err error) {
 func (f *File) ReadAt(p []byte, off int64) (n int, err error) {
 	log.Println("File.ReadAt", f.name, p, off)
 
-	return -1, ErrNotImplemented
+	if _, err := f.Seek(off, io.SeekStart); err != nil {
+		return -1, err
+	}
+
+	return f.Read(p)
 }
 
 func (f *File) Seek(offset int64, whence int) (int64, error) {