[PATCH RFC 09/24] cat-file: start use ref_array_item struct

[Olga Telezhnaya <olyatelezhnaya@xxxxxxxxx>]

Moving from using expand_data to ref_array_item structure.
That helps us to reuse functions from ref-filter easier.

Signed-off-by: Olga Telezhnaia <olyatelezhnaya@xxxxxxxxx>
Mentored-by: Christian Couder <christian.couder@xxxxxxxxx>
Mentored by: Jeff King <peff@xxxxxxxx>
---
 builtin/cat-file.c | 32 ++++++++++++++++++++------------
 ref-filter.h       |  5 +++++
 2 files changed, 25 insertions(+), 12 deletions(-)

diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index 909412747cbd2..61b7acc79155d 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -183,27 +183,27 @@ static int is_atom(const char *atom, const char *s, int slen)
 }
 
 static void expand_atom(struct strbuf *sb, const char *atom, int len,
-			 struct expand_data *data)
+			 struct ref_array_item *item)
 {
 	if (is_atom("objectname", atom, len))
-		strbuf_addstr(sb, oid_to_hex(&data->oid));
+		strbuf_addstr(sb, oid_to_hex(&item->objectname));
 	else if (is_atom("objecttype", atom, len))
-		strbuf_addstr(sb, typename(data->type));
+		strbuf_addstr(sb, typename(item->type));
 	else if (is_atom("objectsize", atom, len))
-		strbuf_addf(sb, "%lu", data->size);
+		strbuf_addf(sb, "%lu", item->size);
 	else if (is_atom("objectsize:disk", atom, len))
-		strbuf_addf(sb, "%"PRIuMAX, (uintmax_t)data->disk_size);
+		strbuf_addf(sb, "%"PRIuMAX, (uintmax_t)item->disk_size);
 	else if (is_atom("rest", atom, len)) {
-		if (data->rest)
-			strbuf_addstr(sb, data->rest);
+		if (item->rest)
+			strbuf_addstr(sb, item->rest);
 	} else if (is_atom("deltabase", atom, len))
-		strbuf_addstr(sb, oid_to_hex(&data->delta_base_oid));
+		strbuf_addstr(sb, oid_to_hex(item->delta_base_oid));
 }
 
-static size_t expand_format(struct strbuf *sb, const char *start, void *vdata)
+static size_t expand_format(struct strbuf *sb, const char *start, void *data)
 {
 	const char *end;
-	struct expand_data *data = vdata;
+	struct ref_array_item *item = data;
 
 	if (*start != '(')
 		return 0;
@@ -211,7 +211,7 @@ static size_t expand_format(struct strbuf *sb, const char *start, void *vdata)
 	if (!end)
 		die("format element '%s' does not end in ')'", start);
 
-	expand_atom(sb, start + 1, end - start - 1, data);
+	expand_atom(sb, start + 1, end - start - 1, item);
 	return end - start + 1;
 }
 
@@ -283,6 +283,7 @@ static void batch_object_write(const char *obj_name, struct batch_options *opt,
 			       struct expand_data *data)
 {
 	struct strbuf buf = STRBUF_INIT;
+	struct ref_array_item item = {0};
 
 	if (!data->skip_object_info &&
 	    sha1_object_info_extended(data->oid.hash, &data->info,
@@ -293,7 +294,14 @@ static void batch_object_write(const char *obj_name, struct batch_options *opt,
 		return;
 	}
 
-	strbuf_expand(&buf, opt->format.format, expand_format, data);
+	item.objectname = data->oid;
+	item.type = data->type;
+	item.size = data->size;
+	item.disk_size = data->disk_size;
+	item.rest = data->rest;
+	item.delta_base_oid = &data->delta_base_oid;
+
+	strbuf_expand(&buf, opt->format.format, expand_format, &item);
 	strbuf_addch(&buf, '\n');
 	batch_write(opt, buf.buf, buf.len);
 	strbuf_release(&buf);
diff --git a/ref-filter.h b/ref-filter.h
index b50c8e6aaf2c4..7aaf82799ec2d 100644
--- a/ref-filter.h
+++ b/ref-filter.h
@@ -40,6 +40,11 @@ struct ref_array_item {
 	const char *symref;
 	struct commit *commit;
 	struct atom_value *value;
+	enum object_type type;
+	unsigned long size;
+	off_t disk_size;
+	const char *rest;
+	struct object_id *delta_base_oid;
 	char refname[FLEX_ARRAY];
 };
 

--
https://github.com/git/git/pull/452