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Merge branch 'eb/hash-transition'

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Work to support a repository that work with both SHA-1 and SHA-256
hash algorithms has started.

* eb/hash-transition: (30 commits)
  t1016-compatObjectFormat: add tests to verify the conversion between objects
  t1006: test oid compatibility with cat-file
  t1006: rename sha1 to oid
  test-lib: compute the compatibility hash so tests may use it
  builtin/ls-tree: let the oid determine the output algorithm
  object-file: handle compat objects in check_object_signature
  tree-walk: init_tree_desc take an oid to get the hash algorithm
  builtin/cat-file: let the oid determine the output algorithm
  rev-parse: add an --output-object-format parameter
  repository: implement extensions.compatObjectFormat
  object-file: update object_info_extended to reencode objects
  object-file-convert: convert commits that embed signed tags
  object-file-convert: convert commit objects when writing
  object-file-convert: don't leak when converting tag objects
  object-file-convert: convert tag objects when writing
  object-file-convert: add a function to convert trees between algorithms
  object: factor out parse_mode out of fast-import and tree-walk into in object.h
  cache: add a function to read an OID of a specific algorithm
  tag: sign both hashes
  commit: export add_header_signature to support handling signatures on tags
  ...
This commit is contained in:
Junio C Hamano
2024-03-28 14:13:50 -07:00
parent c75fd8d815 7673ecd2dc
commit 1002f28a52
62 changed files with 1880 additions and 385 deletions
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12
builtin/cat-file.c
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@ -106,7 +106,10 @@ 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_HASH_ANY;
const char *path = force_path;
const int opt_cw = (opt == 'c' || opt == 'w');
if (!path && opt_cw)
@ -226,7 +229,8 @@ static int cat_one_file(int opt, const char *exp_type, const char *obj_name,
die(_("unable to read %s"), oid_to_hex(&oid));
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
@ -517,7 +521,9 @@ static void batch_one_object(const char *obj_name,
struct expand_data *data)
{
struct object_context ctx;
int flags = opt->follow_symlinks ? GET_OID_FOLLOW_SYMLINKS : 0;
int flags =
GET_OID_HASH_ANY |
(opt->follow_symlinks ? GET_OID_FOLLOW_SYMLINKS : 0);
enum get_oid_result result;
result = get_oid_with_context(the_repository, obj_name,