From 3c9eb01790e8410e0165237a614d6b44bc614611 Mon Sep 17 00:00:00 2001
From: Sasha Koshka <sashakoshka@tebibyte.media>
Date: Sun, 8 Dec 2024 01:30:00 -0500
Subject: [PATCH] providers/os: Add appendFile

---
 providers/os/os.go | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/providers/os/os.go b/providers/os/os.go
index 7da23af..db0b125 100644
--- a/providers/os/os.go
+++ b/providers/os/os.go
@@ -35,6 +35,7 @@ func (this *Provider) FuncMap () template.FuncMap {
 		"readFile":   funcReadFile,
 		"readDir":    funcReadDir,
 		"writeFile":  funcWriteFile,
+		"appendFile": funcAppendFile,
 		"renameFile": funcRenameFile,
 		"removeFile": funcRemoveFile,
 	}
@@ -99,6 +100,13 @@ func funcWriteFile (name, content string) error {
 	return err
 }
 
+func funcAppendFile (name, content string) error {
+	file, err := os.OpenFile(name, os.O_CREATE | os.O_WRONLY | os.O_APPEND, 644)
+	if err != nil { return err }
+	_, err = io.WriteString(file, content)
+	return err
+}
+
 func funcRenameFile (name, newName string) error {
 	return os.Rename(name, newName)
 }