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Merge branch 'pk/rebase-in-c-4-opts'

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Rewrite "git rebase" in C.

* pk/rebase-in-c-4-opts:
  builtin rebase: support --root
  builtin rebase: add support for custom merge strategies
  builtin rebase: support `fork-point` option
  merge-base --fork-point: extract libified function
  builtin rebase: support --rebase-merges[=[no-]rebase-cousins]
  builtin rebase: support `--allow-empty-message` option
  builtin rebase: support `--exec`
  builtin rebase: support `--autostash` option
  builtin rebase: support `-C` and `--whitespace=<type>`
  builtin rebase: support `--gpg-sign` option
  builtin rebase: support `--autosquash`
  builtin rebase: support `keep-empty` option
  builtin rebase: support `ignore-date` option
  builtin rebase: support `ignore-whitespace` option
  builtin rebase: support --committer-date-is-author-date
  builtin rebase: support --rerere-autoupdate
  builtin rebase: support --signoff
  builtin rebase: allow selecting the rebase "backend"
This commit is contained in:
Junio C Hamano
2018-11-02 11:04:55 +09:00
parent 39f7331545 9dba809a69
commit 0293121717
4 changed files with 530 additions and 85 deletions
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82
commit.c
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@ -17,6 +17,8 @@
#include "sha1-lookup.h"
#include "wt-status.h"
#include "advice.h"
#include "refs.h"
#include "commit-reach.h"
static struct commit_extra_header *read_commit_extra_header_lines(const char *buf, size_t len, const char **);
@ -843,6 +845,86 @@ void sort_in_topological_order(struct commit_list **list, enum rev_sort_order so
clear_author_date_slab(&author_date);
}
struct rev_collect {
struct commit **commit;
int nr;
int alloc;
unsigned int initial : 1;
};
static void add_one_commit(struct object_id *oid, struct rev_collect *revs)
{
struct commit *commit;
if (is_null_oid(oid))
return;
commit = lookup_commit(the_repository, oid);
if (!commit ||
(commit->object.flags & TMP_MARK) ||
parse_commit(commit))
return;
ALLOC_GROW(revs->commit, revs->nr + 1, revs->alloc);
revs->commit[revs->nr++] = commit;
commit->object.flags |= TMP_MARK;
}
static int collect_one_reflog_ent(struct object_id *ooid, struct object_id *noid,
const char *ident, timestamp_t timestamp,
int tz, const char *message, void *cbdata)
{
struct rev_collect *revs = cbdata;
if (revs->initial) {
revs->initial = 0;
add_one_commit(ooid, revs);
}
add_one_commit(noid, revs);
return 0;
}
struct commit *get_fork_point(const char *refname, struct commit *commit)
{
struct object_id oid;
struct rev_collect revs;
struct commit_list *bases;
int i;
struct commit *ret = NULL;
memset(&revs, 0, sizeof(revs));
revs.initial = 1;
for_each_reflog_ent(refname, collect_one_reflog_ent, &revs);
if (!revs.nr && !get_oid(refname, &oid))
add_one_commit(&oid, &revs);
for (i = 0; i < revs.nr; i++)
revs.commit[i]->object.flags &= ~TMP_MARK;
bases = get_merge_bases_many(commit, revs.nr, revs.commit);
/*
* There should be one and only one merge base, when we found
* a common ancestor among reflog entries.
*/
if (!bases || bases->next)
goto cleanup_return;
/* And the found one must be one of the reflog entries */
for (i = 0; i < revs.nr; i++)
if (&bases->item->object == &revs.commit[i]->object)
break; /* found */
if (revs.nr <= i)
goto cleanup_return;
ret = bases->item;
cleanup_return:
free_commit_list(bases);
return ret;
}
static const char gpg_sig_header[] = "gpgsig";
static const int gpg_sig_header_len = sizeof(gpg_sig_header) - 1;