[PATCH v7 2/4] cat-file: introduce batch_mode enum to replace print_contents

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From: John Cai <johncai86@xxxxxxxxx>

A future patch introduces a new --batch-command flag. Including --batch
and --batch-check, we will have a total of three batch modes. print_contents
is the only boolean on the batch_options sturct used to distinguish
between the different modes. This makes the code harder to read.

To reduce potential confusion, replace print_contents with an enum to
help readability and clarity.

Helped-by: Junio C Hamano <gitster@xxxxxxxxx>
Signed-off-by: John Cai <johncai86@xxxxxxxxx>
---
 builtin/cat-file.c | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index 5f015e71096..5e38af82af1 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -17,10 +17,15 @@
 #include "object-store.h"
 #include "promisor-remote.h"
 
+enum batch_mode {
+	BATCH_MODE_CONTENTS,
+	BATCH_MODE_INFO,
+};
+
 struct batch_options {
 	int enabled;
 	int follow_symlinks;
-	int print_contents;
+	enum batch_mode batch_mode;
 	int buffer_output;
 	int all_objects;
 	int unordered;
@@ -386,7 +391,7 @@ static void batch_object_write(const char *obj_name,
 	strbuf_addch(scratch, '\n');
 	batch_write(opt, scratch->buf, scratch->len);
 
-	if (opt->print_contents) {
+	if (opt->batch_mode == BATCH_MODE_CONTENTS) {
 		print_object_or_die(opt, data);
 		batch_write(opt, "\n", 1);
 	}
@@ -536,7 +541,7 @@ static int batch_objects(struct batch_options *opt)
 	 * If we are printing out the object, then always fill in the type,
 	 * since we will want to decide whether or not to stream.
 	 */
-	if (opt->print_contents)
+	if (opt->batch_mode == BATCH_MODE_CONTENTS)
 		data.info.typep = &data.type;
 
 	if (opt->all_objects) {
@@ -635,7 +640,14 @@ static int batch_option_callback(const struct option *opt,
 	}
 
 	bo->enabled = 1;
-	bo->print_contents = !strcmp(opt->long_name, "batch");
+
+	if (!strcmp(opt->long_name, "batch"))
+		bo->batch_mode = BATCH_MODE_CONTENTS;
+	else if (!strcmp(opt->long_name, "batch-check"))
+		bo->batch_mode = BATCH_MODE_INFO;
+	else
+		BUG("%s given to batch-option-callback", opt->long_name);
+
 	bo->format = arg;
 
 	return 0;
-- 
gitgitgadget




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