Because I know the first twenty-something weren't enough, here's another series of SHA-256-related patches. This is the beginning of the work to make SHA-256 and SHA-1 repositories interoperate, which of course is part of the transition plan. This series introduces code to make struct object_id take a hash algorithm member and use that for printing the object ID. This is the first step to handling multiple hash algorithms in the same binary, which we'll need if we're going to process both SHA-1 and SHA-256 versions of objects. The major contributor to the size of this series is the patch to switch to per-algorithm null OIDs via a null_oid function. It's certainly possible there are conflicts with topics in flight, but those should be easy to resolve (just change "&null_oid" to "null_oid()"). In addition, there's an initial set of patches to allow hashing an object literally with any algorithm. Such objects cannot be written into the object store, but their values can be printed. This series is available as transition-interop-part-1 from the usual places and is part of the transition-interop branch (the entirety of the work) as well. Be aware that the latter is very, very broken and its use is not advised at this time. Future series will likely include some fixes to our testsuite and code to map objects across hash algorithms. brian m. carlson (15): sha1-file: allow hashing objects literally with any algorithm builtin/hash-object: allow literally hashing with a given algorithm cache: add an algo member to struct object_id Always use oidread to read into struct object_id hash: add a function to finalize object IDs Use the final_oid_fn to finalize hashing of object IDs builtin/pack-redundant: avoid casting buffers to struct object_id cache: compare the entire buffer for struct object_id hash: set and copy algo field in struct object_id hash: provide per-algorithm null OIDs builtin/show-index: set the algorithm for object IDs commit-graph: don't store file hashes as struct object_id builtin/pack-objects: avoid using struct object_id for pack hash hex: default to the_hash_algo on zero algorithm value hex: print objects using the hash algorithm member archive.c | 6 +- blame.c | 2 +- branch.c | 2 +- builtin/checkout.c | 6 +- builtin/clone.c | 2 +- builtin/describe.c | 2 +- builtin/diff.c | 2 +- builtin/fast-export.c | 10 +-- builtin/fast-import.c | 8 +- builtin/grep.c | 2 +- builtin/hash-object.c | 47 ++++++++---- builtin/index-pack.c | 6 +- builtin/ls-files.c | 2 +- builtin/pack-objects.c | 20 ++--- builtin/pack-redundant.c | 28 +++---- builtin/rebase.c | 4 +- builtin/receive-pack.c | 2 +- builtin/show-index.c | 4 +- builtin/submodule--helper.c | 29 +++---- builtin/unpack-objects.c | 7 +- builtin/worktree.c | 4 +- bulk-checkin.c | 2 +- combine-diff.c | 2 +- commit-graph.c | 25 ++++--- connect.c | 2 +- diff-lib.c | 6 +- diff-no-index.c | 2 +- diff.c | 6 +- dir.c | 6 +- grep.c | 2 +- hash.h | 73 +++++++++++------- hex.c | 20 +++-- http-walker.c | 2 +- http.c | 2 +- log-tree.c | 2 +- match-trees.c | 2 +- merge-ort.c | 20 ++--- merge-recursive.c | 10 +-- midx.c | 2 +- notes-merge.c | 2 +- notes.c | 9 ++- object-file.c | 79 +++++++++++++++++--- object-store.h | 3 + parse-options-cb.c | 2 +- range-diff.c | 2 +- read-cache.c | 4 +- refs.c | 4 +- refs/debug.c | 2 +- refs/files-backend.c | 2 +- reset.c | 2 +- sequencer.c | 4 +- split-index.c | 2 +- submodule-config.c | 2 +- submodule.c | 26 ++++--- t/helper/test-submodule-nested-repo-config.c | 2 +- t/t1007-hash-object.sh | 10 +++ tree-diff.c | 4 +- tree-walk.c | 2 +- wt-status.c | 4 +- xdiff-interface.c | 2 +- 60 files changed, 341 insertions(+), 209 deletions(-)
