zlib: wrap deflate side of the API
Wrap deflateInit, deflate, and deflateEnd for everybody, and the sole use
of deflateInit2 in remote-curl.c to tell the library to use gzip header
and trailer in git_deflate_init_gzip().
There is only one caller that cares about the status from deflateEnd().
Introduce git_deflate_end_gently() to let that sole caller retrieve the
status and act on it (i.e. die) for now, but we would probably want to
make inflate_end/deflate_end die when they ran out of memory and get
rid of the _gently() kind.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/diff.c b/diff.c
index 559bf57..c15c70f 100644
--- a/diff.c
+++ b/diff.c
@@ -1732,7 +1732,7 @@
z_stream stream;
memset(&stream, 0, sizeof(stream));
- deflateInit(&stream, zlib_compression_level);
+ git_deflate_init(&stream, zlib_compression_level);
bound = deflateBound(&stream, size);
deflated = xmalloc(bound);
stream.next_out = deflated;
@@ -1740,9 +1740,9 @@
stream.next_in = (unsigned char *)data;
stream.avail_in = size;
- while (deflate(&stream, Z_FINISH) == Z_OK)
+ while (git_deflate(&stream, Z_FINISH) == Z_OK)
; /* nothing */
- deflateEnd(&stream);
+ git_deflate_end(&stream);
*result_size = stream.total_out;
return deflated;
}
