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From: "Han-Wen Nienhuys via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: Han-Wen Nienhuys <hanwenn@gmail.com>,
	Han-Wen Nienhuys <hanwen@google.com>
Subject: [PATCH v2 01/25] hash.h: provide constants for the hash IDs
Date: Mon, 16 Aug 2021 20:16:52 +0000	[thread overview]
Message-ID: <c40393e83e1d57be9429211cdebcb715e9d319d8.1629145036.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.1054.v2.git.git.1629145036.gitgitgadget@gmail.com>

From: Han-Wen Nienhuys <hanwen@google.com>

This will simplify referencing them from code that is not deeply integrated with
Git, in particular, the reftable library.

Signed-off-by: Han-Wen Nienhuys <hanwen@google.com>
---
 hash.h        | 6 ++++++
 object-file.c | 7 ++-----
 2 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/hash.h b/hash.h
index 27a180248f9..f9e8d4b736c 100644
--- a/hash.h
+++ b/hash.h
@@ -95,12 +95,18 @@ static inline void git_SHA256_Clone(git_SHA256_CTX *dst, const git_SHA256_CTX *s
 /* Number of algorithms supported (including unknown). */
 #define GIT_HASH_NALGOS (GIT_HASH_SHA256 + 1)
 
+/* "sha1", big-endian */
+#define GIT_SHA1_FORMAT_ID 0x73686131
+
 /* The length in bytes and in hex digits of an object name (SHA-1 value). */
 #define GIT_SHA1_RAWSZ 20
 #define GIT_SHA1_HEXSZ (2 * GIT_SHA1_RAWSZ)
 /* The block size of SHA-1. */
 #define GIT_SHA1_BLKSZ 64
 
+/* "s256", big-endian */
+#define GIT_SHA256_FORMAT_ID 0x73323536
+
 /* The length in bytes and in hex digits of an object name (SHA-256 value). */
 #define GIT_SHA256_RAWSZ 32
 #define GIT_SHA256_HEXSZ (2 * GIT_SHA256_RAWSZ)
diff --git a/object-file.c b/object-file.c
index a8be8994814..7bfd5e6e2e9 100644
--- a/object-file.c
+++ b/object-file.c
@@ -164,7 +164,6 @@ static void git_hash_unknown_final_oid(struct object_id *oid, git_hash_ctx *ctx)
 	BUG("trying to finalize unknown hash");
 }
 
-
 const struct git_hash_algo hash_algos[GIT_HASH_NALGOS] = {
 	{
 		NULL,
@@ -183,8 +182,7 @@ const struct git_hash_algo hash_algos[GIT_HASH_NALGOS] = {
 	},
 	{
 		"sha1",
-		/* "sha1", big-endian */
-		0x73686131,
+		GIT_SHA1_FORMAT_ID,
 		GIT_SHA1_RAWSZ,
 		GIT_SHA1_HEXSZ,
 		GIT_SHA1_BLKSZ,
@@ -199,8 +197,7 @@ const struct git_hash_algo hash_algos[GIT_HASH_NALGOS] = {
 	},
 	{
 		"sha256",
-		/* "s256", big-endian */
-		0x73323536,
+		GIT_SHA256_FORMAT_ID,
 		GIT_SHA256_RAWSZ,
 		GIT_SHA256_HEXSZ,
 		GIT_SHA256_BLKSZ,
-- 
gitgitgadget


  reply	other threads:[~2021-08-16 20:17 UTC|newest]

Thread overview: 132+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-20 17:04 [PATCH 00/26] Support reftable ref backend for Git Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 01/26] hash.h: provide constants for the hash IDs Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 02/26] init-db: set the_repository->hash_algo early on Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 03/26] reftable: RFC: add LICENSE Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 04/26] reftable: add error related functionality Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 05/26] reftable: utility functions Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 06/26] reftable: add blocksource, an abstraction for random access reads Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 07/26] reftable: (de)serialization for the polymorphic record type Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 08/26] Provide zlib's uncompress2 from compat/zlib-compat.c Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 09/26] reftable: reading/writing blocks Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 10/26] reftable: a generic binary tree implementation Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 11/26] reftable: write reftable files Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 12/26] reftable: generic interface to tables Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 13/26] reftable: read reftable files Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 14/26] reftable: reftable file level tests Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 15/26] reftable: add a heap-based priority queue for reftable records Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 16/26] reftable: add merged table view Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 17/26] reftable: implement refname validation Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 18/26] reftable: implement stack, a mutable database of reftable files Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 19/26] reftable: add dump utility Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 20/26] refs: RFC: Reftable support for git-core Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 21/26] git-prompt: prepare for reftable refs backend SZEDER Gábor via GitGitGadget
2021-07-20 17:04 ` [PATCH 22/26] Add "test-tool dump-reftable" command Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 23/26] t1301: document what needs to be done for reftable Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 24/26] t1401,t2011: parameterize HEAD.lock for REFFILES Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 25/26] t1404: annotate test cases with REFFILES Han-Wen Nienhuys via GitGitGadget
2021-07-20 17:04 ` [PATCH 26/26] t7004: avoid direct filesystem access Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:16 ` [PATCH v2 00/25] Support reftable ref backend for Git Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:16   ` Han-Wen Nienhuys via GitGitGadget [this message]
2021-08-16 20:16   ` [PATCH v2 02/25] init-db: set the_repository->hash_algo early on Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:16   ` [PATCH v2 03/25] reftable: RFC: add LICENSE Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:16   ` [PATCH v2 04/25] reftable: add error related functionality Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:16   ` [PATCH v2 05/25] reftable: utility functions Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:16   ` [PATCH v2 06/25] reftable: add blocksource, an abstraction for random access reads Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:16   ` [PATCH v2 07/25] reftable: (de)serialization for the polymorphic record type Han-Wen Nienhuys via GitGitGadget
2021-08-16 21:54     ` Carlo Marcelo Arenas Belón
2021-08-17 13:44       ` Han-Wen Nienhuys
2021-08-16 20:16   ` [PATCH v2 08/25] Provide zlib's uncompress2 from compat/zlib-compat.c Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 09/25] reftable: reading/writing blocks Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 10/25] reftable: a generic binary tree implementation Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 11/25] reftable: write reftable files Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 12/25] reftable: generic interface to tables Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 13/25] reftable: read reftable files Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 14/25] reftable: reftable file level tests Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 15/25] reftable: add a heap-based priority queue for reftable records Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 16/25] reftable: add merged table view Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 17/25] reftable: implement refname validation Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 18/25] reftable: implement stack, a mutable database of reftable files Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 19/25] reftable: add dump utility Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 20/25] refs: RFC: Reftable support for git-core Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 21/25] git-prompt: prepare for reftable refs backend SZEDER Gábor via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 22/25] Add "test-tool dump-reftable" command Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 23/25] t1301: document what needs to be done for reftable Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 24/25] t1401,t2011: parameterize HEAD.lock for REFFILES Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:17   ` [PATCH v2 25/25] t1404: annotate test cases with REFFILES Han-Wen Nienhuys via GitGitGadget
2021-08-16 20:48   ` [PATCH v2 00/25] Support reftable ref backend for Git Junio C Hamano
2021-08-17 16:38     ` Han-Wen Nienhuys
2021-08-17 13:39   ` [PATCH v3 " Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 01/25] hash.h: provide constants for the hash IDs Han-Wen Nienhuys via GitGitGadget
2021-08-23  9:47       ` Ævar Arnfjörð Bjarmason
2021-08-17 13:39     ` [PATCH v3 02/25] init-db: set the_repository->hash_algo early on Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 03/25] reftable: RFC: add LICENSE Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 04/25] reftable: add error related functionality Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 05/25] reftable: utility functions Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 06/25] reftable: add blocksource, an abstraction for random access reads Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 07/25] reftable: (de)serialization for the polymorphic record type Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 08/25] Provide zlib's uncompress2 from compat/zlib-compat.c Han-Wen Nienhuys via GitGitGadget
2021-08-18 10:14       ` Philip Oakley
2021-08-18 10:39         ` Han-Wen Nienhuys
2021-08-18 11:53           ` Philip Oakley
2021-08-17 13:39     ` [PATCH v3 09/25] reftable: reading/writing blocks Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 10/25] reftable: a generic binary tree implementation Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 11/25] reftable: write reftable files Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 12/25] reftable: generic interface to tables Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 13/25] reftable: read reftable files Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 14/25] reftable: reftable file level tests Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 15/25] reftable: add a heap-based priority queue for reftable records Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 16/25] reftable: add merged table view Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:39     ` [PATCH v3 17/25] reftable: implement refname validation Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:40     ` [PATCH v3 18/25] reftable: implement stack, a mutable database of reftable files Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:40     ` [PATCH v3 19/25] reftable: add dump utility Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:40     ` [PATCH v3 20/25] refs: RFC: Reftable support for git-core Han-Wen Nienhuys via GitGitGadget
2021-08-23  9:50       ` Ævar Arnfjörð Bjarmason
2021-08-30 13:31         ` Han-Wen Nienhuys
2021-08-30 14:10           ` Ævar Arnfjörð Bjarmason
2021-08-17 13:40     ` [PATCH v3 21/25] git-prompt: prepare for reftable refs backend SZEDER Gábor via GitGitGadget
2021-08-17 13:40     ` [PATCH v3 22/25] Add "test-tool dump-reftable" command Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:40     ` [PATCH v3 23/25] t1301: document what needs to be done for reftable Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:40     ` [PATCH v3 24/25] t1401,t2011: parameterize HEAD.lock for REFFILES Han-Wen Nienhuys via GitGitGadget
2021-08-17 13:40     ` [PATCH v3 25/25] t1404: annotate test cases with REFFILES Han-Wen Nienhuys via GitGitGadget
2021-08-23  9:08     ` [PATCH v3 00/25] Support reftable ref backend for Git Ævar Arnfjörð Bjarmason
2021-08-26 16:02       ` Ævar Arnfjörð Bjarmason
2021-08-23 12:12     ` [PATCH v4 00/28] " Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 01/28] hash.h: provide constants for the hash IDs Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 02/28] init-db: set the_repository->hash_algo early on Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 03/28] reftable: RFC: add LICENSE Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 04/28] reftable: add error related functionality Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 05/28] reftable: utility functions Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 06/28] reftable: add blocksource, an abstraction for random access reads Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 07/28] reftable: (de)serialization for the polymorphic record type Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 08/28] Provide zlib's uncompress2 from compat/zlib-compat.c Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 09/28] reftable: reading/writing blocks Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 10/28] reftable: a generic binary tree implementation Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 11/28] reftable: write reftable files Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 12/28] reftable: generic interface to tables Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 13/28] reftable: read reftable files Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 14/28] reftable: reftable file level tests Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 15/28] reftable: add a heap-based priority queue for reftable records Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 16/28] reftable: add merged table view Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 17/28] reftable: implement refname validation Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 18/28] reftable: implement stack, a mutable database of reftable files Ævar Arnfjörð Bjarmason
2021-08-27  5:33         ` Junio C Hamano
2021-08-27  6:01           ` [RFC PATCH] reftable: fixup for broken __FUNCTION__ use Ævar Arnfjörð Bjarmason
2021-08-27  7:00             ` Carlo Arenas
2021-08-30 12:11             ` Han-Wen Nienhuys
2021-08-23 12:12       ` [PATCH v4 19/28] reftable: add dump utility Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 20/28] refs: RFC: Reftable support for git-core Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 21/28] git-prompt: prepare for reftable refs backend Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 22/28] Add "test-tool dump-reftable" command Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 23/28] t1301: document what needs to be done for reftable Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 24/28] t1401,t2011: parameterize HEAD.lock for REFFILES Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 25/28] t1404: annotate test cases with REFFILES Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 26/28] reftable: fixup for new base topic 1/3 Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 27/28] reftable: fixup for new base topic 2/3 Ævar Arnfjörð Bjarmason
2021-08-30 12:32         ` Han-Wen Nienhuys
2021-08-30 13:01           ` Ævar Arnfjörð Bjarmason
2021-08-30 13:48             ` Han-Wen Nienhuys
2021-08-30 14:03               ` Ævar Arnfjörð Bjarmason
2021-08-23 12:12       ` [PATCH v4 28/28] reftable: fixup for new base topic 3/3 Ævar Arnfjörð Bjarmason
2021-08-26  8:39       ` [PATCH v4 00/28] Support reftable ref backend for Git Junio C Hamano
2021-08-26  8:56         ` Han-Wen Nienhuys
2021-08-26 15:05           ` Junio C Hamano

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