diff mbox series

[20/32] builtin/cat-file: Let the oid determine the output algorithm

Message ID 20230908231049.2035003-20-ebiederm@xmission.com (mailing list archive)
State New, archived
Headers show
Series SHA256 and SHA1 interoperability | expand

Commit Message

Eric W. Biederman Sept. 8, 2023, 11:10 p.m. UTC
Use GET_OID_UNTRANSLATED when calling get_oid_with_context.  This
implements the semi-obvious behaviour that specifying a sha1 oid shows
the output for a sha1 encoded object, and specifying a sha256 oid
shows the output for a sha256 encoded object.

This is useful for testing the the conversion of an object to an
equivalent object encoded with a different hash function.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
 builtin/cat-file.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/builtin/cat-file.c b/builtin/cat-file.c
index 694c8538df2f..7c9600292376 100644
--- a/builtin/cat-file.c
+++ b/builtin/cat-file.c
@@ -107,7 +107,10 @@  static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
 	struct object_info oi = OBJECT_INFO_INIT;
 	struct strbuf sb = STRBUF_INIT;
 	unsigned flags = OBJECT_INFO_LOOKUP_REPLACE;
-	unsigned get_oid_flags = GET_OID_RECORD_PATH | GET_OID_ONLY_TO_DIE;
+	unsigned get_oid_flags =
+		GET_OID_RECORD_PATH |
+		GET_OID_ONLY_TO_DIE |
+		GET_OID_UNTRANSLATED;
 	const char *path = force_path;
 	const int opt_cw = (opt == 'c' || opt == 'w');
 	if (!path && opt_cw)
@@ -223,7 +226,8 @@  static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
 								     &size);
 				const char *target;
 				if (!skip_prefix(buffer, "object ", &target) ||
-				    get_oid_hex(target, &blob_oid))
+				    get_oid_hex_algop(target, &blob_oid,
+						      &hash_algos[oid.algo]))
 					die("%s not a valid tag", oid_to_hex(&oid));
 				free(buffer);
 			} else