pack-objects: use reachability bitmap index when generating non-stdout pack

diff --git a/zlib.c b/zlib.c
index 3c63d480c75e9939fb3a047f595b032e9509d681..4223f1a8c57a281d5e41c329a4f983a7bb3b57a0 100644 (file)
--- a/zlib.c
+++ b/zlib.c
@@ -159,6 +159,7 @@ void git_deflate_init(git_zstream *strm, int level)
 {
        int status;
 
+       memset(strm, 0, sizeof(*strm));
        zlib_pre_call(strm);
        status = deflateInit(&strm->z, level);
        zlib_post_call(strm);
@@ -168,15 +169,11 @@ void git_deflate_init(git_zstream *strm, int level)
            strm->z.msg ? strm->z.msg : "no message");
 }
 
-void git_deflate_init_gzip(git_zstream *strm, int level)
+static void do_git_deflate_init(git_zstream *strm, int level, int windowBits)
 {
-       /*
-        * Use default 15 bits, +16 is to generate gzip header/trailer
-        * instead of the zlib wrapper.
-        */
-       const int windowBits = 15 + 16;
        int status;
 
+       memset(strm, 0, sizeof(*strm));
        zlib_pre_call(strm);
        status = deflateInit2(&strm->z, level,
                                  Z_DEFLATED, windowBits,
@@ -188,13 +185,38 @@ void git_deflate_init_gzip(git_zstream *strm, int level)
            strm->z.msg ? strm->z.msg : "no message");
 }
 
-void git_deflate_end(git_zstream *strm)
+void git_deflate_init_gzip(git_zstream *strm, int level)
+{
+       /*
+        * Use default 15 bits, +16 is to generate gzip header/trailer
+        * instead of the zlib wrapper.
+        */
+       do_git_deflate_init(strm, level, 15 + 16);
+}
+
+void git_deflate_init_raw(git_zstream *strm, int level)
+{
+       /*
+        * Use default 15 bits, negate the value to get raw compressed
+        * data without zlib header and trailer.
+        */
+       do_git_deflate_init(strm, level, -15);
+}
+
+int git_deflate_abort(git_zstream *strm)
 {
        int status;
 
        zlib_pre_call(strm);
        status = deflateEnd(&strm->z);
        zlib_post_call(strm);
+       return status;
+}
+
+void git_deflate_end(git_zstream *strm)
+{
+       int status = git_deflate_abort(strm);
+
        if (status == Z_OK)
                return;
        error("deflateEnd: %s (%s)", zerr_to_string(status),