buffer: add utility function to NUL terminate buffer

1 files changed, 5 insertions, 0 deletions

diff --git a/buffer.c b/buffer.c
index d8b01f7..410a059 100644
--- a/buffer.c
+++ b/buffer.c
@@ -29,6 +29,11 @@ void buffer_truncate(Buffer *buf) {
 	buf->len = 0;
 }
 
+bool buffer_terminate(Buffer *buf) {
+	return !buf->data || buf->len == 0 || buf->data[buf->len-1] == '\0' ||
+	        buffer_append(buf, "\0", 1);
+}
+
 void buffer_release(Buffer *buf) {
 	if (!buf)
 		return;