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From: Toon Claes <toon@iotcl.com>
To: git@vger.kernel.org
Cc: Toon Claes <toon@iotcl.com>, Phillip Wood <phillip.wood123@gmail.com>
Subject: [PATCH v2 1/1] cat-file: quote-format name in error when using -z
Date: Thu,  5 Jan 2023 07:24:47 +0100	[thread overview]
Message-ID: <20230105062447.2943709-2-toon@iotcl.com> (raw)
In-Reply-To: <20230105062447.2943709-1-toon@iotcl.com>

Since it's supported to have NUL-delimited input, introduced in
db9d67f2e9 (builtin/cat-file.c: support NUL-delimited input with `-z`,
2022-07-22), it's possible to pass paths that contain newlines. This
works great when the object is found, but when it's not, the input path
is returned in the error message. Because this can contain newlines, the
error message might get spread over multiple lines, making it harder to
machine-parse this error message.

With this change, the input is quote-formatted in the error message, if
needed. This ensures the error message is always on a single line and
makes parsing the error more straightforward.

Signed-off-by: Toon Claes <toon@iotcl.com>
---
 builtin/cat-file.c  | 19 +++++++++++++++++++
 t/t1006-cat-file.sh |  8 ++++++++
 2 files changed, 27 insertions(+)

diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index b3be58b1fb..6d7d5e2188 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -14,6 +14,7 @@
 #include "tree-walk.h"
 #include "oid-array.h"
 #include "packfile.h"
+#include "quote.h"
 #include "object-store.h"
 #include "promisor-remote.h"
 #include "mailmap.h"
@@ -439,8 +440,17 @@ static void batch_object_write(const char *obj_name,
 						       &data->oid, &data->info,
 						       OBJECT_INFO_LOOKUP_REPLACE);
 		if (ret < 0) {
+			struct strbuf quoted = STRBUF_INIT;
+
+			if (opt->nul_terminated &&
+			    obj_name) {
+				quote_c_style(obj_name, &quoted, NULL, 0);
+				obj_name = quoted.buf;
+			}
+
 			printf("%s missing\n",
 			       obj_name ? obj_name : oid_to_hex(&data->oid));
+			strbuf_release(&quoted);
 			fflush(stdout);
 			return;
 		}
@@ -475,6 +485,13 @@ static void batch_one_object(const char *obj_name,
 	result = get_oid_with_context(the_repository, obj_name,
 				      flags, &data->oid, &ctx);
 	if (result != FOUND) {
+		struct strbuf quoted = STRBUF_INIT;
+
+		if (opt->nul_terminated) {
+			quote_c_style(obj_name, &quoted, NULL, 0);
+			obj_name = quoted.buf;
+		}
+
 		switch (result) {
 		case MISSING_OBJECT:
 			printf("%s missing\n", obj_name);
@@ -499,6 +516,8 @@ static void batch_one_object(const char *obj_name,
 			       result);
 			break;
 		}
+
+		strbuf_release(&quoted);
 		fflush(stdout);
 		return;
 	}
diff --git a/t/t1006-cat-file.sh b/t/t1006-cat-file.sh
index 23b8942edb..11344a35bf 100755
--- a/t/t1006-cat-file.sh
+++ b/t/t1006-cat-file.sh
@@ -447,6 +447,14 @@ test_expect_success FUNNYNAMES '--batch-check, -z with newline in input' '
 	test_cmp expect actual
 '

+test_expect_success '--batch-check, -z with newline in non-existent named object' '
+	printf "HEAD:newline${LF}embedded" >in &&
+	git cat-file --batch-check -z <in >actual &&
+
+	printf "\"HEAD:newline\\\\nembedded\" missing\n" >expect &&
+	test_cmp expect actual
+'
+
 batch_command_multiple_info="info $hello_sha1
 info $tree_sha1
 info $commit_sha1
--
2.38.1

  reply	other threads:[~2023-01-05  6:26 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-09 15:00 [PATCH 0/1] cat-file: quote-format name in error when using -z Toon Claes
2022-12-09 15:00 ` [PATCH 1/1] " Toon Claes
2022-12-09 19:33   ` Phillip Wood
2022-12-09 23:58     ` Junio C Hamano
2022-12-11 16:30       ` Phillip Wood
2022-12-12  0:11         ` Junio C Hamano
2022-12-12 11:34           ` Toon Claes
2022-12-12 22:09             ` Junio C Hamano
2022-12-13 15:06           ` Phillip Wood
2022-12-14  8:29             ` Junio C Hamano
2022-12-20  5:31     ` Toon Claes
2022-12-20 10:18       ` Phillip Wood
2022-12-21 12:42         ` Toon Claes
2023-01-05  6:24 ` [PATCH v2 0/1] " Toon Claes
2023-01-05  6:24   ` Toon Claes [this message]
2023-01-16 19:07   ` [PATCH v3 " Toon Claes
2023-01-16 19:07     ` [PATCH v3 1/1] " Toon Claes
2023-01-17 15:24       ` Phillip Wood
2023-03-03 19:17     ` [PATCH v4 0/2] " Toon Claes
2023-03-03 19:17       ` [PATCH v4 1/2] cat-file: extract printing batch error message into function Toon Claes
2023-03-03 20:26         ` Junio C Hamano
2023-03-03 23:14           ` Junio C Hamano
2023-05-10 19:01             ` [PATCH v5 0/1] cat-file: quote-format name in error when using -z Toon Claes
2023-05-10 19:01               ` [PATCH v5 1/1] " Toon Claes
2023-05-10 20:13                 ` Junio C Hamano
2023-05-12  8:54                   ` Toon Claes
2023-05-12 16:57                     ` Junio C Hamano
2023-05-15  8:47                       ` Phillip Wood
2023-05-15 17:20                         ` Junio C Hamano
2023-06-02 13:29                           ` Phillip Wood
2023-03-03 19:17       ` [PATCH v4 2/2] " Toon Claes
2023-03-03 20:14       ` [PATCH v4 0/2] " Junio C Hamano

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