From: ZheNing Hu <redacted>

Use `has_object_file()` in `batch_one_object()` to check
whether the input object exists. This can help us reject
the missing oid when we let `cat-file --batch` use ref-filter
logic later.

Mentored-by: Christian Couder [off-list ref]
Mentored-by: Hariom Verma [off-list ref]
Signed-off-by: ZheNing Hu <redacted>
---
 builtin/cat-file.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index 243fe6844bc..59a86412fd0 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c

@@ -428,6 +428,13 @@ static void batch_one_object(const char *obj_name,
 		return;
 	}
 
+	if (!has_object_file(&data->oid)) {
+		printf("%s missing\n",
+		       obj_name ? obj_name : oid_to_hex(&data->oid));
+		fflush(stdout);
+		return;
+	}
+
 	batch_object_write(obj_name, scratch, opt, data);
 }