1 files changed, 16 insertions, 0 deletions
diff --git a/internal/bufpool/append.go b/internal/bufpool/append.go
new file mode 100644
index 00000000..f19dbc78
--- /dev/null
+++ b/internal/bufpool/append.go
@@ -0,0 +1,16 @@
+package bufpool
+
+// Append copies the provided bytes onto the end of the buffer, growing its
+// capacity if required. If src is empty, the method does nothing.
+//
+// The receiver retains ownership of the data; the caller may reuse src freely.
+func (buf *Buffer) Append(src []byte) {
+	if len(src) == 0 {
+		return
+	}
+
+	start := len(buf.buf)
+	buf.ensureCapacity(start + len(src))
+	buf.buf = buf.buf[:start+len(src)]
+	copy(buf.buf[start:], src)
+}