[PATCH v2 02/18] cat-file: reuse struct ref_format

[Olga Telezhnaya <olyatelezhnaya@gmail.com>]

Start using ref_format struct instead of simple char*.
Need that for further reusing of formatting logic from ref-filter.

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 | 16 +++++++++-------
 1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index f783b39b9bd5c..7655a9a726773 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -13,15 +13,16 @@
 #include "tree-walk.h"
 #include "sha1-array.h"
 #include "packfile.h"
+#include "ref-filter.h"
 
 struct batch_options {
+	struct ref_format *format;
 	int enabled;
 	int follow_symlinks;
 	int print_contents;
 	int buffer_output;
 	int all_objects;
 	int cmdmode; /* may be 'w' or 'c' for --filters or --textconv */
-	const char *format;
 };
 
 static const char *force_path;
@@ -353,7 +354,7 @@ static void batch_object_write(const char *obj_name, struct batch_options *opt,
 		return;
 	}
 
-	strbuf_expand(&buf, opt->format, expand_format, data);
+	strbuf_expand(&buf, opt->format->format, expand_format, data);
 	strbuf_addch(&buf, '\n');
 	batch_write(opt, buf.buf, buf.len);
 	strbuf_release(&buf);
@@ -446,8 +447,8 @@ static int batch_objects(struct batch_options *opt)
 	int save_warning;
 	int retval = 0;
 
-	if (!opt->format)
-		opt->format = "%(objectname) %(objecttype) %(objectsize)";
+	if (!opt->format->format)
+		opt->format->format = "%(objectname) %(objecttype) %(objectsize)";
 
 	/*
 	 * Expand once with our special mark_query flag, which will prime the
@@ -456,7 +457,7 @@ static int batch_objects(struct batch_options *opt)
 	 */
 	memset(&data, 0, sizeof(data));
 	data.mark_query = 1;
-	strbuf_expand(&buf, opt->format, expand_format, &data);
+	strbuf_expand(&buf, opt->format->format, expand_format, &data);
 	data.mark_query = 0;
 	if (opt->cmdmode)
 		data.split_on_whitespace = 1;
@@ -548,7 +549,7 @@ static int batch_option_callback(const struct option *opt,
 
 	bo->enabled = 1;
 	bo->print_contents = !strcmp(opt->long_name, "batch");
-	bo->format = arg;
+	bo->format->format = arg;
 
 	return 0;
 }
@@ -557,7 +558,8 @@ int cmd_cat_file(int argc, const char **argv, const char *prefix)
 {
 	int opt = 0;
 	const char *exp_type = NULL, *obj_name = NULL;
-	struct batch_options batch = {0};
+	struct ref_format format = REF_FORMAT_INIT;
+	struct batch_options batch = {&format};
 	int unknown_type = 0;
 
 	const struct option options[] = {

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