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tree-walk: init_tree_desc take an oid to get the hash algorithm

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To make it possible for git ls-tree to display the tree encoded
in the hash algorithm of the oid specified to git ls-tree, update
init_tree_desc to take as a parameter the oid of the tree object.

Update all callers of init_tree_desc and init_tree_desc_gently
to pass the oid of the tree object.

Use the oid of the tree object to discover the hash algorithm
of the oid and store that hash algorithm in struct tree_desc.

Use the hash algorithm in decode_tree_entry and
update_tree_entry_internal to handle reading a tree object encoded in
a hash algorithm that differs from the repositories hash algorithm.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Eric W. Biederman
2023-10-01 21:40:28 -05:00
committed by Junio C Hamano
parent d6222a2d05
commit efed687edc
28 changed files with 80 additions and 59 deletions
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6
builtin/pack-objects.c
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@ -1756,7 +1756,8 @@ static void add_pbase_object(struct tree_desc *tree,
tree = pbase_tree_get(&entry.oid);
if (!tree)
return;
init_tree_desc(&sub, tree->tree_data, tree->tree_size);
init_tree_desc(&sub, &tree->oid,
tree->tree_data, tree->tree_size);
add_pbase_object(&sub, down, downlen, fullname);
pbase_tree_put(tree);
@ -1816,7 +1817,8 @@ static void add_preferred_base_object(const char *name)
}
else {
struct tree_desc tree;
init_tree_desc(&tree, it->pcache.tree_data, it->pcache.tree_size);
init_tree_desc(&tree, &it->pcache.oid,
it->pcache.tree_data, it->pcache.tree_size);
add_pbase_object(&tree, name, cmplen, name);
}
}