From 263db403face43927c2eb545a2e6ebb39aae4239 Mon Sep 17 00:00:00 2001
From: Jeff King <peff@peff.net>
Date: Mon, 12 Nov 2018 09:48:47 -0500
Subject: rename "alternate_object_database" to "object_directory"

In preparation for unifying the handling of alt odb's and the normal
repo object directory, let's use a more neutral name. This patch is
purely mechanical, swapping the type name, and converting any variables
named "alt" to "odb". There should be no functional change, but it will
reduce the noise in subsequent diffs.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/count-objects.c b/builtin/count-objects.c
index a7cad05..3fae474 100644
--- a/builtin/count-objects.c
+++ b/builtin/count-objects.c
@@ -78,10 +78,10 @@ static int count_cruft(const char *basename, const char *path, void *data)
 	return 0;
 }
 
-static int print_alternate(struct alternate_object_database *alt, void *data)
+static int print_alternate(struct object_directory *odb, void *data)
 {
 	printf("alternate: ");
-	quote_c_style(alt->path, NULL, stdout, 0);
+	quote_c_style(odb->path, NULL, stdout, 0);
 	putchar('\n');
 	return 0;
 }
diff --git a/builtin/fsck.c b/builtin/fsck.c
index b10f2b1..55153cf 100644
--- a/builtin/fsck.c
+++ b/builtin/fsck.c
@@ -688,7 +688,7 @@ static struct option fsck_opts[] = {
 int cmd_fsck(int argc, const char **argv, const char *prefix)
 {
 	int i;
-	struct alternate_object_database *alt;
+	struct object_directory *odb;
 
 	/* fsck knows how to handle missing promisor objects */
 	fetch_if_missing = 0;
@@ -725,14 +725,14 @@ int cmd_fsck(int argc, const char **argv, const char *prefix)
 		for_each_loose_object(mark_loose_for_connectivity, NULL, 0);
 		for_each_packed_object(mark_packed_for_connectivity, NULL, 0);
 	} else {
-		struct alternate_object_database *alt_odb_list;
+		struct object_directory *alt_odb_list;
 
 		fsck_object_dir(get_object_directory());
 
 		prepare_alt_odb(the_repository);
 		alt_odb_list = the_repository->objects->alt_odb_list;
-		for (alt = alt_odb_list; alt; alt = alt->next)
-			fsck_object_dir(alt->path);
+		for (odb = alt_odb_list; odb; odb = odb->next)
+			fsck_object_dir(odb->path);
 
 		if (check_full) {
 			struct packed_git *p;
@@ -840,12 +840,12 @@ int cmd_fsck(int argc, const char **argv, const char *prefix)
 			errors_found |= ERROR_COMMIT_GRAPH;
 
 		prepare_alt_odb(the_repository);
-		for (alt =  the_repository->objects->alt_odb_list; alt; alt = alt->next) {
+		for (odb = the_repository->objects->alt_odb_list; odb; odb = odb->next) {
 			child_process_init(&commit_graph_verify);
 			commit_graph_verify.argv = verify_argv;
 			commit_graph_verify.git_cmd = 1;
 			verify_argv[2] = "--object-dir";
-			verify_argv[3] = alt->path;
+			verify_argv[3] = odb->path;
 			if (run_command(&commit_graph_verify))
 				errors_found |= ERROR_COMMIT_GRAPH;
 		}
@@ -861,12 +861,12 @@ int cmd_fsck(int argc, const char **argv, const char *prefix)
 			errors_found |= ERROR_COMMIT_GRAPH;
 
 		prepare_alt_odb(the_repository);
-		for (alt =  the_repository->objects->alt_odb_list; alt; alt = alt->next) {
+		for (odb = the_repository->objects->alt_odb_list; odb; odb = odb->next) {
 			child_process_init(&midx_verify);
 			midx_verify.argv = midx_argv;
 			midx_verify.git_cmd = 1;
 			midx_argv[2] = "--object-dir";
-			midx_argv[3] = alt->path;
+			midx_argv[3] = odb->path;
 			if (run_command(&midx_verify))
 				errors_found |= ERROR_COMMIT_GRAPH;
 		}
diff --git a/builtin/submodule--helper.c b/builtin/submodule--helper.c
index 28b9449..3ae451b 100644
--- a/builtin/submodule--helper.c
+++ b/builtin/submodule--helper.c
@@ -1265,7 +1265,7 @@ struct submodule_alternate_setup {
 	SUBMODULE_ALTERNATE_ERROR_IGNORE, NULL }
 
 static int add_possible_reference_from_superproject(
-		struct alternate_object_database *alt, void *sas_cb)
+		struct object_directory *odb, void *sas_cb)
 {
 	struct submodule_alternate_setup *sas = sas_cb;
 	size_t len;
@@ -1274,11 +1274,11 @@ static int add_possible_reference_from_superproject(
 	 * If the alternate object store is another repository, try the
 	 * standard layout with .git/(modules/<name>)+/objects
 	 */
-	if (strip_suffix(alt->path, "/objects", &len)) {
+	if (strip_suffix(odb->path, "/objects", &len)) {
 		char *sm_alternate;
 		struct strbuf sb = STRBUF_INIT;
 		struct strbuf err = STRBUF_INIT;
-		strbuf_add(&sb, alt->path, len);
+		strbuf_add(&sb, odb->path, len);
 
 		/*
 		 * We need to end the new path with '/' to mark it as a dir,
diff --git a/commit-graph.c b/commit-graph.c
index 40c855f..5dd3f5b 100644
--- a/commit-graph.c
+++ b/commit-graph.c
@@ -230,7 +230,7 @@ static void prepare_commit_graph_one(struct repository *r, const char *obj_dir)
  */
 static int prepare_commit_graph(struct repository *r)
 {
-	struct alternate_object_database *alt;
+	struct object_directory *odb;
 	char *obj_dir;
 	int config_value;
 
@@ -255,10 +255,10 @@ static int prepare_commit_graph(struct repository *r)
 	obj_dir = r->objects->objectdir;
 	prepare_commit_graph_one(r, obj_dir);
 	prepare_alt_odb(r);
-	for (alt = r->objects->alt_odb_list;
-	     !r->objects->commit_graph && alt;
-	     alt = alt->next)
-		prepare_commit_graph_one(r, alt->path);
+	for (odb = r->objects->alt_odb_list;
+	     !r->objects->commit_graph && odb;
+	     odb = odb->next)
+		prepare_commit_graph_one(r, odb->path);
 	return !!r->objects->commit_graph;
 }
 
diff --git a/object-store.h b/object-store.h
index 63b7605..122d5f7 100644
--- a/object-store.h
+++ b/object-store.h
@@ -7,8 +7,8 @@
 #include "sha1-array.h"
 #include "strbuf.h"
 
-struct alternate_object_database {
-	struct alternate_object_database *next;
+struct object_directory {
+	struct object_directory *next;
 
 	/* see alt_scratch_buf() */
 	struct strbuf scratch;
@@ -32,14 +32,14 @@ struct alternate_object_database {
 };
 void prepare_alt_odb(struct repository *r);
 char *compute_alternate_path(const char *path, struct strbuf *err);
-typedef int alt_odb_fn(struct alternate_object_database *, void *);
+typedef int alt_odb_fn(struct object_directory *, void *);
 int foreach_alt_odb(alt_odb_fn, void*);
 
 /*
  * Allocate a "struct alternate_object_database" but do _not_ actually
  * add it to the list of alternates.
  */
-struct alternate_object_database *alloc_alt_odb(const char *dir);
+struct object_directory *alloc_alt_odb(const char *dir);
 
 /*
  * Add the directory to the on-disk alternates file; the new entry will also
@@ -60,7 +60,7 @@ void add_to_alternates_memory(const char *dir);
  * alternate. Always use this over direct access to alt->scratch, as it
  * cleans up any previous use of the scratch buffer.
  */
-struct strbuf *alt_scratch_buf(struct alternate_object_database *alt);
+struct strbuf *alt_scratch_buf(struct object_directory *odb);
 
 struct packed_git {
 	struct packed_git *next;
@@ -100,8 +100,8 @@ struct raw_object_store {
 	/* Path to extra alternate object database if not NULL */
 	char *alternate_db;
 
-	struct alternate_object_database *alt_odb_list;
-	struct alternate_object_database **alt_odb_tail;
+	struct object_directory *alt_odb_list;
+	struct object_directory **alt_odb_tail;
 
 	/*
 	 * Objects that should be substituted by other objects
diff --git a/object.c b/object.c
index e541605..6af8e90 100644
--- a/object.c
+++ b/object.c
@@ -482,17 +482,17 @@ struct raw_object_store *raw_object_store_new(void)
 	return o;
 }
 
-static void free_alt_odb(struct alternate_object_database *alt)
+static void free_alt_odb(struct object_directory *odb)
 {
-	strbuf_release(&alt->scratch);
-	oid_array_clear(&alt->loose_objects_cache);
-	free(alt);
+	strbuf_release(&odb->scratch);
+	oid_array_clear(&odb->loose_objects_cache);
+	free(odb);
 }
 
 static void free_alt_odbs(struct raw_object_store *o)
 {
 	while (o->alt_odb_list) {
-		struct alternate_object_database *next;
+		struct object_directory *next;
 
 		next = o->alt_odb_list->next;
 		free_alt_odb(o->alt_odb_list);
diff --git a/packfile.c b/packfile.c
index f2850a0..d6d511c 100644
--- a/packfile.c
+++ b/packfile.c
@@ -966,16 +966,16 @@ static void prepare_packed_git_mru(struct repository *r)
 
 static void prepare_packed_git(struct repository *r)
 {
-	struct alternate_object_database *alt;
+	struct object_directory *odb;
 
 	if (r->objects->packed_git_initialized)
 		return;
 	prepare_multi_pack_index_one(r, r->objects->objectdir, 1);
 	prepare_packed_git_one(r, r->objects->objectdir, 1);
 	prepare_alt_odb(r);
-	for (alt = r->objects->alt_odb_list; alt; alt = alt->next) {
-		prepare_multi_pack_index_one(r, alt->path, 0);
-		prepare_packed_git_one(r, alt->path, 0);
+	for (odb = r->objects->alt_odb_list; odb; odb = odb->next) {
+		prepare_multi_pack_index_one(r, odb->path, 0);
+		prepare_packed_git_one(r, odb->path, 0);
 	}
 	rearrange_packed_git(r);
 
diff --git a/sha1-file.c b/sha1-file.c
index dd0b6aa..a3cc650 100644
--- a/sha1-file.c
+++ b/sha1-file.c
@@ -353,16 +353,16 @@ void sha1_file_name(struct repository *r, struct strbuf *buf, const unsigned cha
 	fill_sha1_path(buf, sha1);
 }
 
-struct strbuf *alt_scratch_buf(struct alternate_object_database *alt)
+struct strbuf *alt_scratch_buf(struct object_directory *odb)
 {
-	strbuf_setlen(&alt->scratch, alt->base_len);
-	return &alt->scratch;
+	strbuf_setlen(&odb->scratch, odb->base_len);
+	return &odb->scratch;
 }
 
-static const char *alt_sha1_path(struct alternate_object_database *alt,
+static const char *alt_sha1_path(struct object_directory *odb,
 				 const unsigned char *sha1)
 {
-	struct strbuf *buf = alt_scratch_buf(alt);
+	struct strbuf *buf = alt_scratch_buf(odb);
 	fill_sha1_path(buf, sha1);
 	return buf->buf;
 }
@@ -374,7 +374,7 @@ static int alt_odb_usable(struct raw_object_store *o,
 			  struct strbuf *path,
 			  const char *normalized_objdir)
 {
-	struct alternate_object_database *alt;
+	struct object_directory *odb;
 
 	/* Detect cases where alternate disappeared */
 	if (!is_directory(path->buf)) {
@@ -388,8 +388,8 @@ static int alt_odb_usable(struct raw_object_store *o,
 	 * Prevent the common mistake of listing the same
 	 * thing twice, or object directory itself.
 	 */
-	for (alt = o->alt_odb_list; alt; alt = alt->next) {
-		if (!fspathcmp(path->buf, alt->path))
+	for (odb = o->alt_odb_list; odb; odb = odb->next) {
+		if (!fspathcmp(path->buf, odb->path))
 			return 0;
 	}
 	if (!fspathcmp(path->buf, normalized_objdir))
@@ -402,7 +402,7 @@ static int alt_odb_usable(struct raw_object_store *o,
  * Prepare alternate object database registry.
  *
  * The variable alt_odb_list points at the list of struct
- * alternate_object_database.  The elements on this list come from
+ * object_directory.  The elements on this list come from
  * non-empty elements from colon separated ALTERNATE_DB_ENVIRONMENT
  * environment variable, and $GIT_OBJECT_DIRECTORY/info/alternates,
  * whose contents is similar to that environment variable but can be
@@ -419,7 +419,7 @@ static void read_info_alternates(struct repository *r,
 static int link_alt_odb_entry(struct repository *r, const char *entry,
 	const char *relative_base, int depth, const char *normalized_objdir)
 {
-	struct alternate_object_database *ent;
+	struct object_directory *ent;
 	struct strbuf pathbuf = STRBUF_INIT;
 
 	if (!is_absolute_path(entry) && relative_base) {
@@ -540,9 +540,9 @@ static void read_info_alternates(struct repository *r,
 	free(path);
 }
 
-struct alternate_object_database *alloc_alt_odb(const char *dir)
+struct object_directory *alloc_alt_odb(const char *dir)
 {
-	struct alternate_object_database *ent;
+	struct object_directory *ent;
 
 	FLEX_ALLOC_STR(ent, path, dir);
 	strbuf_init(&ent->scratch, 0);
@@ -684,7 +684,7 @@ out:
 
 int foreach_alt_odb(alt_odb_fn fn, void *cb)
 {
-	struct alternate_object_database *ent;
+	struct object_directory *ent;
 	int r = 0;
 
 	prepare_alt_odb(the_repository);
@@ -743,10 +743,10 @@ static int check_and_freshen_local(const struct object_id *oid, int freshen)
 
 static int check_and_freshen_nonlocal(const struct object_id *oid, int freshen)
 {
-	struct alternate_object_database *alt;
+	struct object_directory *odb;
 	prepare_alt_odb(the_repository);
-	for (alt = the_repository->objects->alt_odb_list; alt; alt = alt->next) {
-		const char *path = alt_sha1_path(alt, oid->hash);
+	for (odb = the_repository->objects->alt_odb_list; odb; odb = odb->next) {
+		const char *path = alt_sha1_path(odb, oid->hash);
 		if (check_and_freshen_file(path, freshen))
 			return 1;
 	}
@@ -893,7 +893,7 @@ int git_open_cloexec(const char *name, int flags)
 static int stat_sha1_file(struct repository *r, const unsigned char *sha1,
 			  struct stat *st, const char **path)
 {
-	struct alternate_object_database *alt;
+	struct object_directory *odb;
 	static struct strbuf buf = STRBUF_INIT;
 
 	strbuf_reset(&buf);
@@ -905,8 +905,8 @@ static int stat_sha1_file(struct repository *r, const unsigned char *sha1,
 
 	prepare_alt_odb(r);
 	errno = ENOENT;
-	for (alt = r->objects->alt_odb_list; alt; alt = alt->next) {
-		*path = alt_sha1_path(alt, sha1);
+	for (odb = r->objects->alt_odb_list; odb; odb = odb->next) {
+		*path = alt_sha1_path(odb, sha1);
 		if (!lstat(*path, st))
 			return 0;
 	}
@@ -922,7 +922,7 @@ static int open_sha1_file(struct repository *r,
 			  const unsigned char *sha1, const char **path)
 {
 	int fd;
-	struct alternate_object_database *alt;
+	struct object_directory *odb;
 	int most_interesting_errno;
 	static struct strbuf buf = STRBUF_INIT;
 
@@ -936,8 +936,8 @@ static int open_sha1_file(struct repository *r,
 	most_interesting_errno = errno;
 
 	prepare_alt_odb(r);
-	for (alt = r->objects->alt_odb_list; alt; alt = alt->next) {
-		*path = alt_sha1_path(alt, sha1);
+	for (odb = r->objects->alt_odb_list; odb; odb = odb->next) {
+		*path = alt_sha1_path(odb, sha1);
 		fd = git_open(*path);
 		if (fd >= 0)
 			return fd;
@@ -2139,14 +2139,14 @@ struct loose_alt_odb_data {
 	void *data;
 };
 
-static int loose_from_alt_odb(struct alternate_object_database *alt,
+static int loose_from_alt_odb(struct object_directory *odb,
 			      void *vdata)
 {
 	struct loose_alt_odb_data *data = vdata;
 	struct strbuf buf = STRBUF_INIT;
 	int r;
 
-	strbuf_addstr(&buf, alt->path);
+	strbuf_addstr(&buf, odb->path);
 	r = for_each_loose_file_in_objdir_buf(&buf,
 					      data->cb, NULL, NULL,
 					      data->data);
diff --git a/sha1-name.c b/sha1-name.c
index faa60f6..2594aa7 100644
--- a/sha1-name.c
+++ b/sha1-name.c
@@ -95,8 +95,8 @@ static int match_sha(unsigned, const unsigned char *, const unsigned char *);
 static void find_short_object_filename(struct disambiguate_state *ds)
 {
 	int subdir_nr = ds->bin_pfx.hash[0];
-	struct alternate_object_database *alt;
-	static struct alternate_object_database *fakeent;
+	struct object_directory *odb;
+	static struct object_directory *fakeent;
 
 	if (!fakeent) {
 		/*
@@ -110,24 +110,24 @@ static void find_short_object_filename(struct disambiguate_state *ds)
 	}
 	fakeent->next = the_repository->objects->alt_odb_list;
 
-	for (alt = fakeent; alt && !ds->ambiguous; alt = alt->next) {
+	for (odb = fakeent; odb && !ds->ambiguous; odb = odb->next) {
 		int pos;
 
-		if (!alt->loose_objects_subdir_seen[subdir_nr]) {
-			struct strbuf *buf = alt_scratch_buf(alt);
+		if (!odb->loose_objects_subdir_seen[subdir_nr]) {
+			struct strbuf *buf = alt_scratch_buf(odb);
 			for_each_file_in_obj_subdir(subdir_nr, buf,
 						    append_loose_object,
 						    NULL, NULL,
-						    &alt->loose_objects_cache);
-			alt->loose_objects_subdir_seen[subdir_nr] = 1;
+						    &odb->loose_objects_cache);
+			odb->loose_objects_subdir_seen[subdir_nr] = 1;
 		}
 
-		pos = oid_array_lookup(&alt->loose_objects_cache, &ds->bin_pfx);
+		pos = oid_array_lookup(&odb->loose_objects_cache, &ds->bin_pfx);
 		if (pos < 0)
 			pos = -1 - pos;
-		while (!ds->ambiguous && pos < alt->loose_objects_cache.nr) {
+		while (!ds->ambiguous && pos < odb->loose_objects_cache.nr) {
 			const struct object_id *oid;
-			oid = alt->loose_objects_cache.oid + pos;
+			oid = odb->loose_objects_cache.oid + pos;
 			if (!match_sha(ds->len, ds->bin_pfx.hash, oid->hash))
 				break;
 			update_candidates(ds, oid);
diff --git a/transport.c b/transport.c
index 5a74b60..040e92c 100644
--- a/transport.c
+++ b/transport.c
@@ -1433,7 +1433,7 @@ struct alternate_refs_data {
 	void *data;
 };
 
-static int refs_from_alternate_cb(struct alternate_object_database *e,
+static int refs_from_alternate_cb(struct object_directory *e,
 				  void *data)
 {
 	struct strbuf path = STRBUF_INIT;
-- 
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