Merge branch 'mt/use-passed-repo-more-in-funcs'

Some codepaths were given a repository instance as a parameter to
work in the repository, but passed the_repository instance to its
callees, which has been cleaned up (somewhat).

* mt/use-passed-repo-more-in-funcs:
  sha1-file: allow check_object_signature() to handle any repo
  sha1-file: pass git_hash_algo to hash_object_file()
  sha1-file: pass git_hash_algo to write_object_file_prepare()
  streaming: allow open_istream() to handle any repo
  pack-check: use given repo's hash_algo at verify_packfile()
  cache-tree: use given repo's hash_algo at verify_one()
  diff: make diff_populate_filespec() honor its repo argument

1 files changed, 31 insertions, 24 deletions

diff --git a/sha1-file.c b/sha1-file.c
index 6575d6f..d785de8 100644
--- a/sha1-file.c
+++ b/sha1-file.c
@@ -971,8 +971,8 @@ void *xmmap(void *start, size_t length,
  * With "map" == NULL, try reading the object named with "oid" using
  * the streaming interface and rehash it to do the same.
  */
-int check_object_signature(const struct object_id *oid, void *map,
-			   unsigned long size, const char *type)
+int check_object_signature(struct repository *r, const struct object_id *oid,
+			   void *map, unsigned long size, const char *type)
 {
 	struct object_id real_oid;
 	enum object_type obj_type;
@@ -982,11 +982,11 @@ int check_object_signature(const struct object_id *oid, void *map,
 	int hdrlen;
 
 	if (map) {
-		hash_object_file(map, size, type, &real_oid);
+		hash_object_file(r->hash_algo, map, size, type, &real_oid);
 		return !oideq(oid, &real_oid) ? -1 : 0;
 	}
 
-	st = open_istream(oid, &obj_type, &size, NULL);
+	st = open_istream(r, oid, &obj_type, &size, NULL);
 	if (!st)
 		return -1;
 
@@ -994,8 +994,8 @@ int check_object_signature(const struct object_id *oid, void *map,
 	hdrlen = xsnprintf(hdr, sizeof(hdr), "%s %"PRIuMAX , type_name(obj_type), (uintmax_t)size) + 1;
 
 	/* Sha1.. */
-	the_hash_algo->init_fn(&c);
-	the_hash_algo->update_fn(&c, hdr, hdrlen);
+	r->hash_algo->init_fn(&c);
+	r->hash_algo->update_fn(&c, hdr, hdrlen);
 	for (;;) {
 		char buf[1024 * 16];
 		ssize_t readlen = read_istream(st, buf, sizeof(buf));
@@ -1006,9 +1006,9 @@ int check_object_signature(const struct object_id *oid, void *map,
 		}
 		if (!readlen)
 			break;
-		the_hash_algo->update_fn(&c, buf, readlen);
+		r->hash_algo->update_fn(&c, buf, readlen);
 	}
-	the_hash_algo->final_fn(real_oid.hash, &c);
+	r->hash_algo->final_fn(real_oid.hash, &c);
 	close_istream(st);
 	return !oideq(oid, &real_oid) ? -1 : 0;
 }
@@ -1588,7 +1588,7 @@ int pretend_object_file(void *buf, unsigned long len, enum object_type type,
 {
 	struct cached_object *co;
 
-	hash_object_file(buf, len, type_name(type), oid);
+	hash_object_file(the_hash_algo, buf, len, type_name(type), oid);
 	if (has_object_file(oid) || find_cached_object(oid))
 		return 0;
 	ALLOC_GROW(cached_objects, cached_object_nr + 1, cached_object_alloc);
@@ -1694,7 +1694,8 @@ void *read_object_with_reference(struct repository *r,
 	}
 }
 
-static void write_object_file_prepare(const void *buf, unsigned long len,
+static void write_object_file_prepare(const struct git_hash_algo *algo,
+				      const void *buf, unsigned long len,
 				      const char *type, struct object_id *oid,
 				      char *hdr, int *hdrlen)
 {
@@ -1704,10 +1705,10 @@ static void write_object_file_prepare(const void *buf, unsigned long len,
 	*hdrlen = xsnprintf(hdr, *hdrlen, "%s %"PRIuMAX , type, (uintmax_t)len)+1;
 
 	/* Sha1.. */
-	the_hash_algo->init_fn(&c);
-	the_hash_algo->update_fn(&c, hdr, *hdrlen);
-	the_hash_algo->update_fn(&c, buf, len);
-	the_hash_algo->final_fn(oid->hash, &c);
+	algo->init_fn(&c);
+	algo->update_fn(&c, hdr, *hdrlen);
+	algo->update_fn(&c, buf, len);
+	algo->final_fn(oid->hash, &c);
 }
 
 /*
@@ -1760,12 +1761,13 @@ static int write_buffer(int fd, const void *buf, size_t len)
 	return 0;
 }
 
-int hash_object_file(const void *buf, unsigned long len, const char *type,
+int hash_object_file(const struct git_hash_algo *algo, const void *buf,
+		     unsigned long len, const char *type,
 		     struct object_id *oid)
 {
 	char hdr[MAX_HEADER_LEN];
 	int hdrlen = sizeof(hdr);
-	write_object_file_prepare(buf, len, type, oid, hdr, &hdrlen);
+	write_object_file_prepare(algo, buf, len, type, oid, hdr, &hdrlen);
 	return 0;
 }
 
@@ -1923,7 +1925,8 @@ int write_object_file(const void *buf, unsigned long len, const char *type,
 	/* Normally if we have it in the pack then we do not bother writing
 	 * it out into .git/objects/??/?{38} file.
 	 */
-	write_object_file_prepare(buf, len, type, oid, hdr, &hdrlen);
+	write_object_file_prepare(the_hash_algo, buf, len, type, oid, hdr,
+				  &hdrlen);
 	if (freshen_packed_object(oid) || freshen_loose_object(oid))
 		return 0;
 	return write_loose_object(oid, hdr, hdrlen, buf, len, 0);
@@ -1939,7 +1942,8 @@ int hash_object_file_literally(const void *buf, unsigned long len,
 	/* type string, SP, %lu of the length plus NUL must fit this */
 	hdrlen = strlen(type) + MAX_HEADER_LEN;
 	header = xmalloc(hdrlen);
-	write_object_file_prepare(buf, len, type, oid, header, &hdrlen);
+	write_object_file_prepare(the_hash_algo, buf, len, type, oid, header,
+				  &hdrlen);
 
 	if (!(flags & HASH_WRITE_OBJECT))
 		goto cleanup;
@@ -2049,7 +2053,8 @@ static int index_mem(struct index_state *istate,
 	if (write_object)
 		ret = write_object_file(buf, size, type_name(type), oid);
 	else
-		ret = hash_object_file(buf, size, type_name(type), oid);
+		ret = hash_object_file(the_hash_algo, buf, size,
+				       type_name(type), oid);
 	if (re_allocated)
 		free(buf);
 	return ret;
@@ -2075,8 +2080,8 @@ static int index_stream_convert_blob(struct index_state *istate,
 		ret = write_object_file(sbuf.buf, sbuf.len, type_name(OBJ_BLOB),
 					oid);
 	else
-		ret = hash_object_file(sbuf.buf, sbuf.len, type_name(OBJ_BLOB),
-				       oid);
+		ret = hash_object_file(the_hash_algo, sbuf.buf, sbuf.len,
+				       type_name(OBJ_BLOB), oid);
 	strbuf_release(&sbuf);
 	return ret;
 }
@@ -2194,7 +2199,8 @@ int index_path(struct index_state *istate, struct object_id *oid,
 		if (strbuf_readlink(&sb, path, st->st_size))
 			return error_errno("readlink(\"%s\")", path);
 		if (!(flags & HASH_WRITE_OBJECT))
-			hash_object_file(sb.buf, sb.len, blob_type, oid);
+			hash_object_file(the_hash_algo, sb.buf, sb.len,
+					 blob_type, oid);
 		else if (write_object_file(sb.buf, sb.len, blob_type, oid))
 			rc = error(_("%s: failed to insert into database"), path);
 		strbuf_release(&sb);
@@ -2495,8 +2501,9 @@ int read_loose_object(const char *path,
 			git_inflate_end(&stream);
 			goto out;
 		}
-		if (check_object_signature(expected_oid, *contents,
-					 *size, type_name(*type))) {
+		if (check_object_signature(the_repository, expected_oid,
+					   *contents, *size,
+					   type_name(*type))) {
 			error(_("hash mismatch for %s (expected %s)"), path,
 			      oid_to_hex(expected_oid));
 			free(*contents);