buffer: Provide buffer_destroy

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/util.c b/util.c
index 0f24282e772d17904092e5c5c7c9d1d465284fea..0215f257620b29955da29135aa332cf044bcf944 100644 (file)
--- a/util.c
+++ b/util.c
@@ -291,6 +291,14 @@ void buffer_init(struct buffer_if *buffer, int32_t max_start_pad)
     buffer->size=0;
 }
 
+void buffer_destroy(struct buffer_if *buf)
+{
+    BUF_ASSERT_FREE(buf);
+    free(buf->base);
+    buf->start=buf->base=0;
+    buf->size=buf->alloclen=0;
+}
+
 void *buf_append(struct buffer_if *buf, int32_t amount) {
     void *p;
     assert(amount <= buf_remaining_space(buf));

diff --git a/util.h b/util.h
index a5a82a431e8eed383e24b6d55f122ac2ea779154..3549eb0fa251853c28f5c3aac1cdcd184c9ce180 100644 (file)
--- a/util.h
+++ b/util.h
@@ -23,6 +23,7 @@ extern void buffer_assert_used(struct buffer_if *buffer, cstring_t file,
                               int line);
 extern void buffer_new(struct buffer_if *buffer, int32_t len);
 extern void buffer_init(struct buffer_if *buffer, int32_t max_start_pad);
+extern void buffer_destroy(struct buffer_if *buffer);
 extern void buffer_copy(struct buffer_if *dst, const struct buffer_if *src);
 extern void *buf_append(struct buffer_if *buf, int32_t amount);
 extern void *buf_prepend(struct buffer_if *buf, int32_t amount);