streaming: convert istream internals to struct object_id

Convert the various open_istream variants to take a pointer to struct
object_id.  Introduce a temporary, which will be removed later, to work
around the fact that lookup_replace_object still returns a pointer to
unsigned char.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/streaming.c b/streaming.c
index 344678e95f21246a615916dfd946a3b095a9dd8a..3f4be1ea2c3e9ed68190b8e2bb54c9b3de6d853b 100644 (file)
--- a/streaming.c
+++ b/streaming.c
@@ -14,7 +14,7 @@ enum input_source {
 
 typedef int (*open_istream_fn)(struct git_istream *,
                               struct object_info *,
-                              const unsigned char *,
+                              const struct object_id *,
                               enum object_type *);
 typedef int (*close_istream_fn)(struct git_istream *);
 typedef ssize_t (*read_istream_fn)(struct git_istream *, char *, size_t);
@@ -27,7 +27,7 @@ struct stream_vtbl {
 #define open_method_decl(name) \
        int open_istream_ ##name \
        (struct git_istream *st, struct object_info *oi, \
-        const unsigned char *sha1, \
+        const struct object_id *oid, \
         enum object_type *type)
 
 #define close_method_decl(name) \
@@ -142,13 +142,16 @@ struct git_istream *open_istream(const struct object_id *oid,
        struct object_info oi = OBJECT_INFO_INIT;
        const unsigned char *real = lookup_replace_object(oid->hash);
        enum input_source src = istream_source(real, type, &oi);
+       struct object_id realoid;
+
+       hashcpy(realoid.hash, real);
 
        if (src < 0)
                return NULL;
 
        st = xmalloc(sizeof(*st));
-       if (open_istream_tbl[src](st, &oi, real, type)) {
-               if (open_istream_incore(st, &oi, real, type)) {
+       if (open_istream_tbl[src](st, &oi, &realoid, type)) {
+               if (open_istream_incore(st, &oi, &realoid, type)) {
                        free(st);
                        return NULL;
                }
@@ -338,7 +341,7 @@ static struct stream_vtbl loose_vtbl = {
 
 static open_method_decl(loose)
 {
-       st->u.loose.mapped = map_sha1_file(sha1, &st->u.loose.mapsize);
+       st->u.loose.mapped = map_sha1_file(oid->hash, &st->u.loose.mapsize);
        if (!st->u.loose.mapped)
                return -1;
        if ((unpack_sha1_header(&st->z,
@@ -489,7 +492,7 @@ static struct stream_vtbl incore_vtbl = {
 
 static open_method_decl(incore)
 {
-       st->u.incore.buf = read_sha1_file_extended(sha1, type, &st->size, 0);
+       st->u.incore.buf = read_sha1_file_extended(oid->hash, type, &st->size, 0);
        st->u.incore.read_ptr = 0;
        st->vtbl = &incore_vtbl;