Add SerdBuffer type for mutable buffers

This avoids const violations from abusing SerdChunk as a mutable buffer
for string sinks.

1 files changed, 14 insertions, 6 deletions

diff --git a/serd/serd.h b/serd/serd.h
index c1e8ba8e..08a5e151 100644
--- a/serd/serd.h
+++ b/serd/serd.h
@@ -234,6 +234,14 @@ typedef struct {
 } SerdChunk;
 
 /**
+   A mutable buffer in memory.
+*/
+typedef struct {
+	void*  buf;  /**< Buffer */
+	size_t len;  /**< Size of buffer in bytes */
+} SerdBuffer;
+
+/**
    An error description.
 */
 typedef struct {
@@ -975,24 +983,24 @@ serd_file_sink(const void* buf, size_t len, void* stream);
 /**
    A convenience sink function for writing to a string.
 
-   This function can be used as a SerdSink to write to a SerdChunk which is
+   This function can be used as a SerdSink to write to a SerdBuffer which is
    resized as necessary with realloc().  The `stream` parameter must point to
-   an initialized SerdChunk.  When the write is finished, the string should be
-   retrieved with serd_chunk_sink_finish().
+   an initialized SerdBuffer.  When the write is finished, the string should be
+   retrieved with serd_buffer_sink_finish().
 */
 SERD_API
 size_t
-serd_chunk_sink(const void* buf, size_t len, void* stream);
+serd_buffer_sink(const void* buf, size_t len, void* stream);
 
 /**
-   Finish a serialisation to a chunk with serd_chunk_sink().
+   Finish a serialisation to a chunk with serd_buffer_sink().
 
    The returned string is the result of the serialisation, which is NULL
    terminated (by this function) and owned by the caller.
 */
 SERD_API
 uint8_t*
-serd_chunk_sink_finish(SerdChunk* stream);
+serd_buffer_sink_finish(SerdBuffer* stream);
 
 /**
    Set a function to be called when errors occur during writing.