initial commit

server/utils/copy_file.go

@@ -0,0 +1,39 @@
+package utils
+
+import (
+	"io"
+	"os"
+)
+
+func CopyFile(src, dst string) error {
+	sourceFileStat, err := os.Stat(src)
+	if err != nil {
+		return err
+	}
+
+	if !sourceFileStat.Mode().IsRegular() {
+		return os.ErrInvalid
+	}
+
+	source, err := os.Open(src)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		_ = source.Close()
+	}()
+
+	destination, err := os.Create(dst)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		_ = destination.Close()
+	}()
+
+	if _, err := io.Copy(destination, source); err != nil {
+		return err
+	}
+
+	return os.Chmod(dst, sourceFileStat.Mode())
+}