odb: perform the stream hashing in the frontend

Hash the data as it's coming into the stream and tell the backend what
its name is when finalizing the write. This makes it consistent with
the way a plain git_odb_write() performs the write.

1 files changed, 3 insertions, 0 deletions

diff --git a/include/git2/odb_backend.h b/include/git2/odb_backend.h
index af1e3e5b9..d004238a4 100644
--- a/include/git2/odb_backend.h
+++ b/include/git2/odb_backend.h
@@ -65,10 +65,13 @@ typedef enum {
 	GIT_STREAM_RW = (GIT_STREAM_RDONLY | GIT_STREAM_WRONLY),
 } git_odb_stream_t;
 
+typedef struct git_hash_ctx git_hash_ctx;
+
 /** A stream to read/write from a backend */
 struct git_odb_stream {
 	git_odb_backend *backend;
 	unsigned int mode;
+	git_hash_ctx *hash_ctx;
 
 	int (*read)(git_odb_stream *stream, char *buffer, size_t len);
 	int (*write)(git_odb_stream *stream, const char *buffer, size_t len);