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| author | brian m. carlson <sandals@crustytoothpaste.net> | 2025-07-01 21:22:27 +0000 |
|---|---|---|
| committer | Junio C Hamano <gitster@pobox.com> | 2025-07-01 14:58:23 -0700 |
| commit | ca6daa1368eb9b0b48f64ef57907821318d7971c (patch) | |
| tree | fd48d36667b3b186c3469dab3acd79c1cbf76c33 | |
| parent | 16bd9f20a403117f2e0d9bcda6c6e621d3763e77 (diff) | |
| download | git-ca6daa1368eb9b0b48f64ef57907821318d7971c.tar.xz | |
hash: add a constant for the default hash algorithm
Right now, SHA-1 is the default hash algorithm in Git. However, this
may change in the future.
We have many places in our code that use the SHA-1 constant to indicate
the default hash if none is specified, but it will end up being more
practical to specify this explicitly and clearly using a constant for
whatever the default hash algorithm is. Then, if we decide to change it
in the future, we can simply replace the constant representing the
default with a new value.
For these reasons, introduce GIT_HASH_DEFAULT to represent the default
hash algorithm.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | hash.h | 2 |
1 files changed, 2 insertions, 0 deletions
@@ -174,6 +174,8 @@ static inline void git_SHA256_Clone(git_SHA256_CTX *dst, const git_SHA256_CTX *s #define GIT_HASH_SHA256 2 /* Number of algorithms supported (including unknown). */ #define GIT_HASH_NALGOS (GIT_HASH_SHA256 + 1) +/* Default hash algorithm if unspecified. */ +#define GIT_HASH_DEFAULT GIT_HASH_SHA1 /* "sha1", big-endian */ #define GIT_SHA1_FORMAT_ID 0x73686131 |