From 8fb79ccb76d993fff289f2dbcddb570dcf9e4fa2 Mon Sep 17 00:00:00 2001
From: Felicitas Pojtinger <felicitas@pojtinger.com>
Date: Sun, 26 Dec 2021 00:18:47 +0100
Subject: [PATCH] feat:  Implement `File.WriteString`

---
 internal/fs/file.go | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/internal/fs/file.go b/internal/fs/file.go
index 279478d..623aac7 100644
--- a/internal/fs/file.go
+++ b/internal/fs/file.go
@@ -258,7 +258,17 @@ func (f *File) WriteString(s string) (ret int, err error) {
 		return -1, err
 	}
 
-	return -1, ErrNotImplemented
+	if f.writeBuf == nil {
+		writeBuf, cleanWriteBuf, err := f.getFileBuffer()
+		if err != nil {
+			return -1, err
+		}
+
+		f.writeBuf = writeBuf
+		f.cleanWriteBuf = cleanWriteBuf
+	}
+
+	return f.writeBuf.Write([]byte(s))
 }
 
 func (f *File) closeWithoutLocking() error {