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builtin/init-db: allow specifying hash algorithm on command line

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Allow the user to specify the hash algorithm on the command line by
using the --object-format option to git init.  Validate that the user is
not attempting to reinitialize a repository with a different hash
algorithm.  Ensure that if we are writing a non-SHA-1 repository that we
set the repository version to 1 and write the objectFormat extension.

Restrict this option to work only when ENABLE_SHA256 is set until the
codebase is in a situation to fully support this.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
brian m. carlson
2020-02-22 20:17:38 +00:00
committed by Junio C Hamano
parent cfe3917c85
commit 8b8f7189df
4 changed files with 55 additions and 9 deletions
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2
builtin/clone.c
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@ -1097,7 +1097,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
}
}
init_db(git_dir, real_git_dir, option_template, INIT_DB_QUIET);
init_db(git_dir, real_git_dir, option_template, GIT_HASH_UNKNOWN, INIT_DB_QUIET);
if (real_git_dir)
git_dir = real_git_dir;