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1002f28a52
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 ...
112 lines
2.8 KiB
C
112 lines
2.8 KiB
C
#include "git-compat-util.h"
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#include "gettext.h"
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#include "hash.h"
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#include "hex.h"
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#include "lockfile.h"
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#include "merge.h"
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#include "commit.h"
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#include "repository.h"
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#include "run-command.h"
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#include "resolve-undo.h"
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#include "tree.h"
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#include "tree-walk.h"
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#include "unpack-trees.h"
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static const char *merge_argument(struct commit *commit)
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{
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return oid_to_hex(commit ? &commit->object.oid : the_hash_algo->empty_tree);
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}
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int try_merge_command(struct repository *r,
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const char *strategy, size_t xopts_nr,
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const char **xopts, struct commit_list *common,
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const char *head_arg, struct commit_list *remotes)
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{
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struct child_process cmd = CHILD_PROCESS_INIT;
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int i, ret;
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struct commit_list *j;
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strvec_pushf(&cmd.args, "merge-%s", strategy);
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for (i = 0; i < xopts_nr; i++)
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strvec_pushf(&cmd.args, "--%s", xopts[i]);
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for (j = common; j; j = j->next)
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strvec_push(&cmd.args, merge_argument(j->item));
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strvec_push(&cmd.args, "--");
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strvec_push(&cmd.args, head_arg);
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for (j = remotes; j; j = j->next)
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strvec_push(&cmd.args, merge_argument(j->item));
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cmd.git_cmd = 1;
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ret = run_command(&cmd);
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discard_index(r->index);
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if (repo_read_index(r) < 0)
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die(_("failed to read the cache"));
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resolve_undo_clear_index(r->index);
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return ret;
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}
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int checkout_fast_forward(struct repository *r,
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const struct object_id *head,
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const struct object_id *remote,
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int overwrite_ignore)
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{
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struct tree *trees[MAX_UNPACK_TREES];
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struct unpack_trees_options opts;
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struct tree_desc t[MAX_UNPACK_TREES];
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int i, nr_trees = 0;
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struct lock_file lock_file = LOCK_INIT;
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refresh_index(r->index, REFRESH_QUIET, NULL, NULL, NULL);
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if (repo_hold_locked_index(r, &lock_file, LOCK_REPORT_ON_ERROR) < 0)
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return -1;
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memset(&trees, 0, sizeof(trees));
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memset(&t, 0, sizeof(t));
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trees[nr_trees] = parse_tree_indirect(head);
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if (!trees[nr_trees++]) {
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rollback_lock_file(&lock_file);
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return -1;
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}
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trees[nr_trees] = parse_tree_indirect(remote);
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if (!trees[nr_trees++]) {
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rollback_lock_file(&lock_file);
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return -1;
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}
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for (i = 0; i < nr_trees; i++) {
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if (parse_tree(trees[i]) < 0) {
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rollback_lock_file(&lock_file);
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return -1;
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}
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init_tree_desc(t+i, &trees[i]->object.oid,
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trees[i]->buffer, trees[i]->size);
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}
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memset(&opts, 0, sizeof(opts));
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opts.preserve_ignored = !overwrite_ignore;
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opts.head_idx = 1;
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opts.src_index = r->index;
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opts.dst_index = r->index;
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opts.update = 1;
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opts.verbose_update = 1;
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opts.merge = 1;
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opts.fn = twoway_merge;
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init_checkout_metadata(&opts.meta, NULL, remote, NULL);
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setup_unpack_trees_porcelain(&opts, "merge");
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if (unpack_trees(nr_trees, t, &opts)) {
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rollback_lock_file(&lock_file);
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clear_unpack_trees_porcelain(&opts);
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return -1;
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}
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clear_unpack_trees_porcelain(&opts);
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if (write_locked_index(r->index, &lock_file, COMMIT_LOCK))
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return error(_("unable to write new index file"));
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return 0;
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}
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