[PATCH 20/20] cat-file: make cat_file_info variable independent

[Olga Telezhnaya <olyatelezhnaya@gmail.com>]

Remove connection between expand_data variable
in cat-file and in ref-filter.
It will help further to get rid of using expand_data in cat-file.

Signed-off-by: Olga Telezhnaia <olyatelezhnaya@gmail.com>
Mentored-by: Christian Couder <christian.couder@gmail.com>
Mentored by: Jeff King <peff@peff.net>
---
 builtin/cat-file.c |  2 +-
 ref-filter.c       | 28 ++++++++++++++--------------
 ref-filter.h       |  1 -
 3 files changed, 15 insertions(+), 16 deletions(-)

diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index 19cee0d22fabe..ffa8e61213e36 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -289,6 +289,7 @@ static void batch_object_write(const char *obj_name, struct batch_options *opt,
 	item.start_of_request = obj_name;
 
 	if (populate_value(&item)) return;
+	data->type = item.type;
 
 	strbuf_expand(&buf, opt->format->format, expand_format, &item);
 	strbuf_addch(&buf, '\n');
@@ -392,7 +393,6 @@ static int batch_objects(struct batch_options *opt)
 	 * object.
 	 */
 	memset(&data, 0, sizeof(data));
-	opt->format->cat_file_data = &data;
 	opt->format->is_cat = 1;
 	opt->format->split_on_whitespace = &data.split_on_whitespace;
 	opt->format->all_objects = opt->all_objects;
diff --git a/ref-filter.c b/ref-filter.c
index dbca6856432c0..a8a93b488db37 100644
--- a/ref-filter.c
+++ b/ref-filter.c
@@ -100,7 +100,7 @@ static struct used_atom {
 	} u;
 } *used_atoms;
 static int used_atom_cnt, need_tagged, need_symref;
-struct expand_data *cat_file_info;
+struct expand_data cat_file_info;
 static int is_cat = 0;
 
 static void color_atom_parser(const struct ref_format *format, struct used_atom *atom, const char *color_value)
@@ -256,9 +256,9 @@ static void objectname_atom_parser(const struct ref_format *format, struct used_
 static void objectsize_atom_parser(const struct ref_format *format, struct used_atom *atom, const char *arg)
 {
 	if (!arg)
-		cat_file_info->info.sizep = &cat_file_info->size;
+		cat_file_info.info.sizep = &cat_file_info.size;
 	else if (!strcmp(arg, "disk"))
-		cat_file_info->info.disk_sizep = &cat_file_info->disk_size;
+		cat_file_info.info.disk_sizep = &cat_file_info.disk_size;
 	else
 		die(_("urecognized %%(objectsize) argument: %s"), arg);
 }
@@ -266,7 +266,7 @@ static void objectsize_atom_parser(const struct ref_format *format, struct used_
 static void objecttype_atom_parser(const struct ref_format *format, struct used_atom *atom, const char *arg)
 {
 	if (!arg)
-		cat_file_info->info.typep = &cat_file_info->type;
+		cat_file_info.info.typep = &cat_file_info.type;
 	else
 		die(_("urecognized %%(objecttype) argument: %s"), arg);
 }
@@ -274,7 +274,7 @@ static void objecttype_atom_parser(const struct ref_format *format, struct used_
 static void deltabase_atom_parser(const struct ref_format *format, struct used_atom *atom, const char *arg)
 {
 	if (!arg)
-		cat_file_info->info.delta_base_sha1 = cat_file_info->delta_base_oid.hash;
+		cat_file_info.info.delta_base_sha1 = cat_file_info.delta_base_oid.hash;
 	else
 		die(_("urecognized %%(deltabase) argument: %s"), arg);
 }
@@ -739,7 +739,6 @@ int verify_ref_format(struct ref_format *format)
 {
 	const char *cp, *sp;
 
-	cat_file_info = format->cat_file_data;
 	is_cat = format->is_cat;
 	format->need_color_reset_at_eol = 0;
 	for (cp = format->format; *cp && (sp = find_next(cp)); ) {
@@ -768,8 +767,8 @@ int verify_ref_format(struct ref_format *format)
 		format->need_color_reset_at_eol = 0;
 	if (is_cat && format->all_objects) {
 		struct object_info empty = OBJECT_INFO_INIT;
-		if (!memcmp(&cat_file_info->info, &empty, sizeof(empty)))
-			cat_file_info->skip_object_info = 1;
+		if (!memcmp(&cat_file_info.info, &empty, sizeof(empty)))
+			cat_file_info.skip_object_info = 1;
 	}
 	return 0;
 }
@@ -1474,18 +1473,19 @@ int populate_value(struct ref_array_item *ref)
 	}
 
 	if (is_cat) {
-		if (!cat_file_info->skip_object_info &&
-		    sha1_object_info_extended(ref->objectname.hash, &cat_file_info->info,
+		if (!cat_file_info.info.typep) cat_file_info.info.typep = &cat_file_info.type;
+		if (!cat_file_info.skip_object_info &&
+		    sha1_object_info_extended(ref->objectname.hash, &cat_file_info.info,
 					      OBJECT_INFO_LOOKUP_REPLACE) < 0) {
 			const char *e = ref->start_of_request;
 			printf("%s missing\n", e ? e : oid_to_hex(&ref->objectname));
 			fflush(stdout);
 			return -1;
 		}
-		ref->type = cat_file_info->type;
-		ref->size = cat_file_info->size;
-		ref->disk_size = cat_file_info->disk_size;
-		ref->delta_base_oid = cat_file_info->delta_base_oid;
+		ref->type = cat_file_info.type;
+		ref->size = cat_file_info.size;
+		ref->disk_size = cat_file_info.disk_size;
+		ref->delta_base_oid = cat_file_info.delta_base_oid;
 	}
 
 	/* Fill in specials first */
diff --git a/ref-filter.h b/ref-filter.h
index 7f7b17e659241..ebaed0412fac2 100644
--- a/ref-filter.h
+++ b/ref-filter.h
@@ -125,7 +125,6 @@ struct ref_format {
 	 * Helps to move all formatting logic from cat-file to ref-filter,
 	 * hopefully would be reduced later.
 	 */
-	struct expand_data *cat_file_data;
 	int is_cat;
 	int *split_on_whitespace;
 	int all_objects;

--
https://github.com/git/git/pull/450