lib: buffer - Add buffer_clear()

For completeness with respect to the next commit.

diff --git a/src/lib/buffer.h b/src/lib/buffer.h
index 0f173022b7c803dabcdcfb0deb191388e1b99402..f6c26df93abd788cd876bf6e7eb1955da4080ad4 100644 (file)
--- a/src/lib/buffer.h
+++ b/src/lib/buffer.h
@@ -111,6 +111,12 @@ void *buffer_get_modifiable_data(const buffer_t *buf, size_t *used_size_r)
    the contents. */
 void buffer_set_used_size(buffer_t *buf, size_t used_size);
 
+/* Clear the buffer. */
+static inline void buffer_clear(buffer_t *buf)
+{
+       buffer_set_used_size(buf, 0);
+}
+
 /* Returns the current buffer size. */
 size_t buffer_get_size(const buffer_t *buf) ATTR_PURE;
 /* Returns how many bytes we can write to buffer without increasing its size.