f4609b896f
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because there is some breakage in the git build related to the netrc credentials helper which someone has taken care of in nixpkgs. The stable channel is not used for anything other than git, so this should be fine. Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
111 lines
2.8 KiB
C
111 lines
2.8 KiB
C
#include "cache.h"
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#include "diff.h"
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#include "diffcore.h"
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#include "lockfile.h"
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#include "commit.h"
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#include "run-command.h"
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#include "resolve-undo.h"
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#include "tree-walk.h"
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#include "unpack-trees.h"
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#include "dir.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 strvec args = STRVEC_INIT;
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int i, ret;
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struct commit_list *j;
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strvec_pushf(&args, "merge-%s", strategy);
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for (i = 0; i < xopts_nr; i++)
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strvec_pushf(&args, "--%s", xopts[i]);
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for (j = common; j; j = j->next)
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strvec_push(&args, merge_argument(j->item));
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strvec_push(&args, "--");
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strvec_push(&args, head_arg);
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for (j = remotes; j; j = j->next)
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strvec_push(&args, merge_argument(j->item));
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ret = run_command_v_opt(args.v, RUN_GIT_CMD);
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strvec_clear(&args);
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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 dir_struct dir;
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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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parse_tree(trees[i]);
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init_tree_desc(t+i, trees[i]->buffer, trees[i]->size);
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}
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memset(&opts, 0, sizeof(opts));
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dir_init(&dir);
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if (overwrite_ignore) {
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dir.flags |= DIR_SHOW_IGNORED;
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setup_standard_excludes(&dir);
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opts.dir = &dir;
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}
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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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dir_clear(&dir);
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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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