reflog: libify delete reflog function and helpers
Currently stash shells out to reflog in order to delete refs. In an effort to reduce how much we shell out to a subprocess, libify the functionality that stash needs into reflog.c. Add a reflog_delete function that is pretty much the logic in the while loop in builtin/reflog.c cmd_reflog_delete(). This is a function that builtin/reflog.c and builtin/stash.c can both call. Also move functions needed by reflog_delete and export them. Helped-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: John Cai <johncai86@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
John Cai
Junio C Hamano
parent
76bccbcfe2
commit
7d3d226e70
1
Makefile
1
Makefile
@ -989,6 +989,7 @@ LIB_OBJS += rebase-interactive.o
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LIB_OBJS += rebase.o
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LIB_OBJS += ref-filter.o
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LIB_OBJS += reflog-walk.o
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LIB_OBJS += reflog.o
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LIB_OBJS += refs.o
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LIB_OBJS += refs/debug.o
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LIB_OBJS += refs/files-backend.o
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455
builtin/reflog.c
455
builtin/reflog.c
@ -1,16 +1,9 @@
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#include "builtin.h"
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#include "config.h"
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#include "lockfile.h"
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#include "object-store.h"
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#include "repository.h"
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#include "commit.h"
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#include "refs.h"
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#include "dir.h"
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#include "tree-walk.h"
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#include "diff.h"
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#include "revision.h"
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#include "reachable.h"
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#include "worktree.h"
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#include "reflog.h"
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static const char reflog_exists_usage[] =
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N_("git reflog exists <ref>");
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@ -18,404 +11,11 @@ N_("git reflog exists <ref>");
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static timestamp_t default_reflog_expire;
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static timestamp_t default_reflog_expire_unreachable;
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struct cmd_reflog_expire_cb {
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int stalefix;
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int explicit_expiry;
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timestamp_t expire_total;
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timestamp_t expire_unreachable;
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int recno;
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};
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struct expire_reflog_policy_cb {
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enum {
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UE_NORMAL,
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UE_ALWAYS,
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UE_HEAD
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} unreachable_expire_kind;
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struct commit_list *mark_list;
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unsigned long mark_limit;
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struct cmd_reflog_expire_cb cmd;
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struct commit *tip_commit;
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struct commit_list *tips;
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unsigned int dry_run:1;
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};
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struct worktree_reflogs {
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struct worktree *worktree;
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struct string_list reflogs;
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};
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/* Remember to update object flag allocation in object.h */
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#define INCOMPLETE (1u<<10)
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#define STUDYING (1u<<11)
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#define REACHABLE (1u<<12)
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static int tree_is_complete(const struct object_id *oid)
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{
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struct tree_desc desc;
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struct name_entry entry;
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int complete;
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struct tree *tree;
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tree = lookup_tree(the_repository, oid);
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if (!tree)
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return 0;
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if (tree->object.flags & SEEN)
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return 1;
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if (tree->object.flags & INCOMPLETE)
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return 0;
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if (!tree->buffer) {
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enum object_type type;
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unsigned long size;
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void *data = read_object_file(oid, &type, &size);
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if (!data) {
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tree->object.flags |= INCOMPLETE;
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return 0;
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}
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tree->buffer = data;
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tree->size = size;
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}
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init_tree_desc(&desc, tree->buffer, tree->size);
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complete = 1;
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while (tree_entry(&desc, &entry)) {
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if (!has_object_file(&entry.oid) ||
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(S_ISDIR(entry.mode) && !tree_is_complete(&entry.oid))) {
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tree->object.flags |= INCOMPLETE;
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complete = 0;
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}
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}
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free_tree_buffer(tree);
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if (complete)
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tree->object.flags |= SEEN;
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return complete;
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}
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static int commit_is_complete(struct commit *commit)
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{
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struct object_array study;
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struct object_array found;
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int is_incomplete = 0;
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int i;
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/* early return */
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if (commit->object.flags & SEEN)
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return 1;
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if (commit->object.flags & INCOMPLETE)
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return 0;
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/*
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* Find all commits that are reachable and are not marked as
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* SEEN. Then make sure the trees and blobs contained are
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* complete. After that, mark these commits also as SEEN.
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* If some of the objects that are needed to complete this
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* commit are missing, mark this commit as INCOMPLETE.
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*/
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memset(&study, 0, sizeof(study));
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memset(&found, 0, sizeof(found));
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add_object_array(&commit->object, NULL, &study);
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add_object_array(&commit->object, NULL, &found);
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commit->object.flags |= STUDYING;
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while (study.nr) {
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struct commit *c;
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struct commit_list *parent;
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c = (struct commit *)object_array_pop(&study);
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if (!c->object.parsed && !parse_object(the_repository, &c->object.oid))
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c->object.flags |= INCOMPLETE;
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if (c->object.flags & INCOMPLETE) {
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is_incomplete = 1;
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break;
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}
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else if (c->object.flags & SEEN)
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continue;
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for (parent = c->parents; parent; parent = parent->next) {
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struct commit *p = parent->item;
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if (p->object.flags & STUDYING)
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continue;
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p->object.flags |= STUDYING;
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add_object_array(&p->object, NULL, &study);
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add_object_array(&p->object, NULL, &found);
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}
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}
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if (!is_incomplete) {
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/*
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* make sure all commits in "found" array have all the
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* necessary objects.
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*/
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for (i = 0; i < found.nr; i++) {
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struct commit *c =
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(struct commit *)found.objects[i].item;
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if (!tree_is_complete(get_commit_tree_oid(c))) {
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is_incomplete = 1;
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c->object.flags |= INCOMPLETE;
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}
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}
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if (!is_incomplete) {
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/* mark all found commits as complete, iow SEEN */
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for (i = 0; i < found.nr; i++)
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found.objects[i].item->flags |= SEEN;
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}
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}
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/* clear flags from the objects we traversed */
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for (i = 0; i < found.nr; i++)
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found.objects[i].item->flags &= ~STUDYING;
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if (is_incomplete)
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commit->object.flags |= INCOMPLETE;
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else {
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/*
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* If we come here, we have (1) traversed the ancestry chain
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* from the "commit" until we reach SEEN commits (which are
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* known to be complete), and (2) made sure that the commits
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* encountered during the above traversal refer to trees that
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* are complete. Which means that we know *all* the commits
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* we have seen during this process are complete.
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*/
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for (i = 0; i < found.nr; i++)
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found.objects[i].item->flags |= SEEN;
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}
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/* free object arrays */
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object_array_clear(&study);
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object_array_clear(&found);
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return !is_incomplete;
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}
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static int keep_entry(struct commit **it, struct object_id *oid)
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{
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struct commit *commit;
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if (is_null_oid(oid))
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return 1;
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commit = lookup_commit_reference_gently(the_repository, oid, 1);
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if (!commit)
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return 0;
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/*
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* Make sure everything in this commit exists.
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*
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* We have walked all the objects reachable from the refs
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* and cache earlier. The commits reachable by this commit
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* must meet SEEN commits -- and then we should mark them as
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* SEEN as well.
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*/
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if (!commit_is_complete(commit))
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return 0;
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*it = commit;
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return 1;
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}
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/*
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* Starting from commits in the cb->mark_list, mark commits that are
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* reachable from them. Stop the traversal at commits older than
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* the expire_limit and queue them back, so that the caller can call
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* us again to restart the traversal with longer expire_limit.
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*/
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static void mark_reachable(struct expire_reflog_policy_cb *cb)
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{
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struct commit_list *pending;
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timestamp_t expire_limit = cb->mark_limit;
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struct commit_list *leftover = NULL;
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for (pending = cb->mark_list; pending; pending = pending->next)
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pending->item->object.flags &= ~REACHABLE;
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pending = cb->mark_list;
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while (pending) {
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struct commit_list *parent;
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struct commit *commit = pop_commit(&pending);
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if (commit->object.flags & REACHABLE)
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continue;
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if (parse_commit(commit))
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continue;
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commit->object.flags |= REACHABLE;
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if (commit->date < expire_limit) {
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commit_list_insert(commit, &leftover);
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continue;
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}
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commit->object.flags |= REACHABLE;
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parent = commit->parents;
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while (parent) {
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commit = parent->item;
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parent = parent->next;
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if (commit->object.flags & REACHABLE)
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continue;
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commit_list_insert(commit, &pending);
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}
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}
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cb->mark_list = leftover;
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}
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static int unreachable(struct expire_reflog_policy_cb *cb, struct commit *commit, struct object_id *oid)
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{
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/*
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* We may or may not have the commit yet - if not, look it
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* up using the supplied sha1.
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*/
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if (!commit) {
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if (is_null_oid(oid))
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return 0;
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commit = lookup_commit_reference_gently(the_repository, oid,
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1);
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/* Not a commit -- keep it */
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if (!commit)
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return 0;
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}
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/* Reachable from the current ref? Don't prune. */
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if (commit->object.flags & REACHABLE)
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return 0;
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if (cb->mark_list && cb->mark_limit) {
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cb->mark_limit = 0; /* dig down to the root */
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mark_reachable(cb);
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}
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return !(commit->object.flags & REACHABLE);
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}
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/*
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* Return true iff the specified reflog entry should be expired.
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*/
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static int should_expire_reflog_ent(struct object_id *ooid, struct object_id *noid,
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const char *email, timestamp_t timestamp, int tz,
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const char *message, void *cb_data)
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{
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struct expire_reflog_policy_cb *cb = cb_data;
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struct commit *old_commit, *new_commit;
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if (timestamp < cb->cmd.expire_total)
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return 1;
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old_commit = new_commit = NULL;
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if (cb->cmd.stalefix &&
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(!keep_entry(&old_commit, ooid) || !keep_entry(&new_commit, noid)))
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return 1;
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if (timestamp < cb->cmd.expire_unreachable) {
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switch (cb->unreachable_expire_kind) {
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case UE_ALWAYS:
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return 1;
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case UE_NORMAL:
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case UE_HEAD:
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if (unreachable(cb, old_commit, ooid) || unreachable(cb, new_commit, noid))
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return 1;
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break;
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}
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}
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if (cb->cmd.recno && --(cb->cmd.recno) == 0)
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return 1;
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return 0;
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}
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static int should_expire_reflog_ent_verbose(struct object_id *ooid,
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struct object_id *noid,
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const char *email,
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timestamp_t timestamp, int tz,
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const char *message, void *cb_data)
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{
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struct expire_reflog_policy_cb *cb = cb_data;
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int expire;
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expire = should_expire_reflog_ent(ooid, noid, email, timestamp, tz,
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message, cb);
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if (!expire)
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printf("keep %s", message);
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else if (cb->dry_run)
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printf("would prune %s", message);
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else
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printf("prune %s", message);
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return expire;
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}
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static int push_tip_to_list(const char *refname, const struct object_id *oid,
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int flags, void *cb_data)
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{
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struct commit_list **list = cb_data;
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struct commit *tip_commit;
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if (flags & REF_ISSYMREF)
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return 0;
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tip_commit = lookup_commit_reference_gently(the_repository, oid, 1);
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if (!tip_commit)
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return 0;
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commit_list_insert(tip_commit, list);
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return 0;
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}
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static int is_head(const char *refname)
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{
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switch (ref_type(refname)) {
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case REF_TYPE_OTHER_PSEUDOREF:
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case REF_TYPE_MAIN_PSEUDOREF:
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if (parse_worktree_ref(refname, NULL, NULL, &refname))
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BUG("not a worktree ref: %s", refname);
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break;
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default:
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break;
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}
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return !strcmp(refname, "HEAD");
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}
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static void reflog_expiry_prepare(const char *refname,
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const struct object_id *oid,
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void *cb_data)
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{
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struct expire_reflog_policy_cb *cb = cb_data;
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struct commit_list *elem;
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struct commit *commit = NULL;
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if (!cb->cmd.expire_unreachable || is_head(refname)) {
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cb->unreachable_expire_kind = UE_HEAD;
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} else {
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commit = lookup_commit(the_repository, oid);
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cb->unreachable_expire_kind = commit ? UE_NORMAL : UE_ALWAYS;
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}
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if (cb->cmd.expire_unreachable <= cb->cmd.expire_total)
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cb->unreachable_expire_kind = UE_ALWAYS;
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switch (cb->unreachable_expire_kind) {
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case UE_ALWAYS:
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return;
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case UE_HEAD:
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for_each_ref(push_tip_to_list, &cb->tips);
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for (elem = cb->tips; elem; elem = elem->next)
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commit_list_insert(elem->item, &cb->mark_list);
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break;
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case UE_NORMAL:
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commit_list_insert(commit, &cb->mark_list);
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/* For reflog_expiry_cleanup() below */
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cb->tip_commit = commit;
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}
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cb->mark_limit = cb->cmd.expire_total;
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mark_reachable(cb);
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}
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static void reflog_expiry_cleanup(void *cb_data)
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{
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struct expire_reflog_policy_cb *cb = cb_data;
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struct commit_list *elem;
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switch (cb->unreachable_expire_kind) {
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case UE_ALWAYS:
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return;
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case UE_HEAD:
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for (elem = cb->tips; elem; elem = elem->next)
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clear_commit_marks(elem->item, REACHABLE);
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free_commit_list(cb->tips);
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break;
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case UE_NORMAL:
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clear_commit_marks(cb->tip_commit, REACHABLE);
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break;
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}
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}
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static int collect_reflog(const char *ref, const struct object_id *oid, int unused, void *cb_data)
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{
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struct worktree_reflogs *cb = cb_data;
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@ -704,16 +304,6 @@ static int cmd_reflog_expire(int argc, const char **argv, const char *prefix)
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return status;
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}
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static int count_reflog_ent(struct object_id *ooid, struct object_id *noid,
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const char *email, timestamp_t timestamp, int tz,
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const char *message, void *cb_data)
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{
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struct cmd_reflog_expire_cb *cb = cb_data;
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if (!cb->expire_total || timestamp < cb->expire_total)
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cb->recno++;
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return 0;
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}
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static const char * reflog_delete_usage[] = {
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N_("git reflog delete [--rewrite] [--updateref] "
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"[--dry-run | -n] [--verbose] <refs>..."),
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@ -722,11 +312,10 @@ static const char * reflog_delete_usage[] = {
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static int cmd_reflog_delete(int argc, const char **argv, const char *prefix)
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{
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struct cmd_reflog_expire_cb cmd = { 0 };
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int i, status = 0;
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unsigned int flags = 0;
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int verbose = 0;
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reflog_expiry_should_prune_fn *should_prune_fn = should_expire_reflog_ent;
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const struct option options[] = {
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OPT_BIT(0, "dry-run", &flags, N_("do not actually prune any entries"),
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EXPIRE_REFLOGS_DRY_RUN),
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@ -742,48 +331,12 @@ static int cmd_reflog_delete(int argc, const char **argv, const char *prefix)
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argc = parse_options(argc, argv, prefix, options, reflog_delete_usage, 0);
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if (verbose)
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should_prune_fn = should_expire_reflog_ent_verbose;
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if (argc < 1)
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return error(_("no reflog specified to delete"));
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for (i = 0; i < argc; i++) {
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const char *spec = strstr(argv[i], "@{");
|
||||
char *ep, *ref;
|
||||
int recno;
|
||||
struct expire_reflog_policy_cb cb = {
|
||||
.dry_run = !!(flags & EXPIRE_REFLOGS_DRY_RUN),
|
||||
};
|
||||
for (i = 0; i < argc; i++)
|
||||
status |= reflog_delete(argv[i], flags, verbose);
|
||||
|
||||
if (!spec) {
|
||||
status |= error(_("not a reflog: %s"), argv[i]);
|
||||
continue;
|
||||
}
|
||||
|
||||
if (!dwim_log(argv[i], spec - argv[i], NULL, &ref)) {
|
||||
status |= error(_("no reflog for '%s'"), argv[i]);
|
||||
continue;
|
||||
}
|
||||
|
||||
recno = strtoul(spec + 2, &ep, 10);
|
||||
if (*ep == '}') {
|
||||
cmd.recno = -recno;
|
||||
for_each_reflog_ent(ref, count_reflog_ent, &cmd);
|
||||
} else {
|
||||
cmd.expire_total = approxidate(spec + 2);
|
||||
for_each_reflog_ent(ref, count_reflog_ent, &cmd);
|
||||
cmd.expire_total = 0;
|
||||
}
|
||||
|
||||
cb.cmd = cmd;
|
||||
status |= reflog_expire(ref, flags,
|
||||
reflog_expiry_prepare,
|
||||
should_prune_fn,
|
||||
reflog_expiry_cleanup,
|
||||
&cb);
|
||||
free(ref);
|
||||
}
|
||||
return status;
|
||||
}
|
||||
|
||||
|
||||
2
object.h
2
object.h
@ -75,7 +75,7 @@ struct object_array {
|
||||
* builtin/fsck.c: 0--3
|
||||
* builtin/gc.c: 0
|
||||
* builtin/index-pack.c: 2021
|
||||
* builtin/reflog.c: 10--12
|
||||
* reflog.c: 10--12
|
||||
* builtin/show-branch.c: 0-------------------------------------------26
|
||||
* builtin/unpack-objects.c: 2021
|
||||
*/
|
||||
|
||||
432
reflog.c
Normal file
432
reflog.c
Normal file
@ -0,0 +1,432 @@
|
||||
#include "cache.h"
|
||||
#include "object-store.h"
|
||||
#include "reflog.h"
|
||||
#include "refs.h"
|
||||
#include "revision.h"
|
||||
#include "worktree.h"
|
||||
|
||||
/* Remember to update object flag allocation in object.h */
|
||||
#define INCOMPLETE (1u<<10)
|
||||
#define STUDYING (1u<<11)
|
||||
#define REACHABLE (1u<<12)
|
||||
|
||||
static int tree_is_complete(const struct object_id *oid)
|
||||
{
|
||||
struct tree_desc desc;
|
||||
struct name_entry entry;
|
||||
int complete;
|
||||
struct tree *tree;
|
||||
|
||||
tree = lookup_tree(the_repository, oid);
|
||||
if (!tree)
|
||||
return 0;
|
||||
if (tree->object.flags & SEEN)
|
||||
return 1;
|
||||
if (tree->object.flags & INCOMPLETE)
|
||||
return 0;
|
||||
|
||||
if (!tree->buffer) {
|
||||
enum object_type type;
|
||||
unsigned long size;
|
||||
void *data = read_object_file(oid, &type, &size);
|
||||
if (!data) {
|
||||
tree->object.flags |= INCOMPLETE;
|
||||
return 0;
|
||||
}
|
||||
tree->buffer = data;
|
||||
tree->size = size;
|
||||
}
|
||||
init_tree_desc(&desc, tree->buffer, tree->size);
|
||||
complete = 1;
|
||||
while (tree_entry(&desc, &entry)) {
|
||||
if (!has_object_file(&entry.oid) ||
|
||||
(S_ISDIR(entry.mode) && !tree_is_complete(&entry.oid))) {
|
||||
tree->object.flags |= INCOMPLETE;
|
||||
complete = 0;
|
||||
}
|
||||
}
|
||||
free_tree_buffer(tree);
|
||||
|
||||
if (complete)
|
||||
tree->object.flags |= SEEN;
|
||||
return complete;
|
||||
}
|
||||
|
||||
static int commit_is_complete(struct commit *commit)
|
||||
{
|
||||
struct object_array study;
|
||||
struct object_array found;
|
||||
int is_incomplete = 0;
|
||||
int i;
|
||||
|
||||
/* early return */
|
||||
if (commit->object.flags & SEEN)
|
||||
return 1;
|
||||
if (commit->object.flags & INCOMPLETE)
|
||||
return 0;
|
||||
/*
|
||||
* Find all commits that are reachable and are not marked as
|
||||
* SEEN. Then make sure the trees and blobs contained are
|
||||
* complete. After that, mark these commits also as SEEN.
|
||||
* If some of the objects that are needed to complete this
|
||||
* commit are missing, mark this commit as INCOMPLETE.
|
||||
*/
|
||||
memset(&study, 0, sizeof(study));
|
||||
memset(&found, 0, sizeof(found));
|
||||
add_object_array(&commit->object, NULL, &study);
|
||||
add_object_array(&commit->object, NULL, &found);
|
||||
commit->object.flags |= STUDYING;
|
||||
while (study.nr) {
|
||||
struct commit *c;
|
||||
struct commit_list *parent;
|
||||
|
||||
c = (struct commit *)object_array_pop(&study);
|
||||
if (!c->object.parsed && !parse_object(the_repository, &c->object.oid))
|
||||
c->object.flags |= INCOMPLETE;
|
||||
|
||||
if (c->object.flags & INCOMPLETE) {
|
||||
is_incomplete = 1;
|
||||
break;
|
||||
}
|
||||
else if (c->object.flags & SEEN)
|
||||
continue;
|
||||
for (parent = c->parents; parent; parent = parent->next) {
|
||||
struct commit *p = parent->item;
|
||||
if (p->object.flags & STUDYING)
|
||||
continue;
|
||||
p->object.flags |= STUDYING;
|
||||
add_object_array(&p->object, NULL, &study);
|
||||
add_object_array(&p->object, NULL, &found);
|
||||
}
|
||||
}
|
||||
if (!is_incomplete) {
|
||||
/*
|
||||
* make sure all commits in "found" array have all the
|
||||
* necessary objects.
|
||||
*/
|
||||
for (i = 0; i < found.nr; i++) {
|
||||
struct commit *c =
|
||||
(struct commit *)found.objects[i].item;
|
||||
if (!tree_is_complete(get_commit_tree_oid(c))) {
|
||||
is_incomplete = 1;
|
||||
c->object.flags |= INCOMPLETE;
|
||||
}
|
||||
}
|
||||
if (!is_incomplete) {
|
||||
/* mark all found commits as complete, iow SEEN */
|
||||
for (i = 0; i < found.nr; i++)
|
||||
found.objects[i].item->flags |= SEEN;
|
||||
}
|
||||
}
|
||||
/* clear flags from the objects we traversed */
|
||||
for (i = 0; i < found.nr; i++)
|
||||
found.objects[i].item->flags &= ~STUDYING;
|
||||
if (is_incomplete)
|
||||
commit->object.flags |= INCOMPLETE;
|
||||
else {
|
||||
/*
|
||||
* If we come here, we have (1) traversed the ancestry chain
|
||||
* from the "commit" until we reach SEEN commits (which are
|
||||
* known to be complete), and (2) made sure that the commits
|
||||
* encountered during the above traversal refer to trees that
|
||||
* are complete. Which means that we know *all* the commits
|
||||
* we have seen during this process are complete.
|
||||
*/
|
||||
for (i = 0; i < found.nr; i++)
|
||||
found.objects[i].item->flags |= SEEN;
|
||||
}
|
||||
/* free object arrays */
|
||||
object_array_clear(&study);
|
||||
object_array_clear(&found);
|
||||
return !is_incomplete;
|
||||
}
|
||||
|
||||
static int keep_entry(struct commit **it, struct object_id *oid)
|
||||
{
|
||||
struct commit *commit;
|
||||
|
||||
if (is_null_oid(oid))
|
||||
return 1;
|
||||
commit = lookup_commit_reference_gently(the_repository, oid, 1);
|
||||
if (!commit)
|
||||
return 0;
|
||||
|
||||
/*
|
||||
* Make sure everything in this commit exists.
|
||||
*
|
||||
* We have walked all the objects reachable from the refs
|
||||
* and cache earlier. The commits reachable by this commit
|
||||
* must meet SEEN commits -- and then we should mark them as
|
||||
* SEEN as well.
|
||||
*/
|
||||
if (!commit_is_complete(commit))
|
||||
return 0;
|
||||
*it = commit;
|
||||
return 1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Starting from commits in the cb->mark_list, mark commits that are
|
||||
* reachable from them. Stop the traversal at commits older than
|
||||
* the expire_limit and queue them back, so that the caller can call
|
||||
* us again to restart the traversal with longer expire_limit.
|
||||
*/
|
||||
static void mark_reachable(struct expire_reflog_policy_cb *cb)
|
||||
{
|
||||
struct commit_list *pending;
|
||||
timestamp_t expire_limit = cb->mark_limit;
|
||||
struct commit_list *leftover = NULL;
|
||||
|
||||
for (pending = cb->mark_list; pending; pending = pending->next)
|
||||
pending->item->object.flags &= ~REACHABLE;
|
||||
|
||||
pending = cb->mark_list;
|
||||
while (pending) {
|
||||
struct commit_list *parent;
|
||||
struct commit *commit = pop_commit(&pending);
|
||||
if (commit->object.flags & REACHABLE)
|
||||
continue;
|
||||
if (parse_commit(commit))
|
||||
continue;
|
||||
commit->object.flags |= REACHABLE;
|
||||
if (commit->date < expire_limit) {
|
||||
commit_list_insert(commit, &leftover);
|
||||
continue;
|
||||
}
|
||||
commit->object.flags |= REACHABLE;
|
||||
parent = commit->parents;
|
||||
while (parent) {
|
||||
commit = parent->item;
|
||||
parent = parent->next;
|
||||
if (commit->object.flags & REACHABLE)
|
||||
continue;
|
||||
commit_list_insert(commit, &pending);
|
||||
}
|
||||
}
|
||||
cb->mark_list = leftover;
|
||||
}
|
||||
|
||||
static int unreachable(struct expire_reflog_policy_cb *cb, struct commit *commit, struct object_id *oid)
|
||||
{
|
||||
/*
|
||||
* We may or may not have the commit yet - if not, look it
|
||||
* up using the supplied sha1.
|
||||
*/
|
||||
if (!commit) {
|
||||
if (is_null_oid(oid))
|
||||
return 0;
|
||||
|
||||
commit = lookup_commit_reference_gently(the_repository, oid,
|
||||
1);
|
||||
|
||||
/* Not a commit -- keep it */
|
||||
if (!commit)
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Reachable from the current ref? Don't prune. */
|
||||
if (commit->object.flags & REACHABLE)
|
||||
return 0;
|
||||
|
||||
if (cb->mark_list && cb->mark_limit) {
|
||||
cb->mark_limit = 0; /* dig down to the root */
|
||||
mark_reachable(cb);
|
||||
}
|
||||
|
||||
return !(commit->object.flags & REACHABLE);
|
||||
}
|
||||
|
||||
/*
|
||||
* Return true iff the specified reflog entry should be expired.
|
||||
*/
|
||||
int should_expire_reflog_ent(struct object_id *ooid, struct object_id *noid,
|
||||
const char *email, timestamp_t timestamp, int tz,
|
||||
const char *message, void *cb_data)
|
||||
{
|
||||
struct expire_reflog_policy_cb *cb = cb_data;
|
||||
struct commit *old_commit, *new_commit;
|
||||
|
||||
if (timestamp < cb->cmd.expire_total)
|
||||
return 1;
|
||||
|
||||
old_commit = new_commit = NULL;
|
||||
if (cb->cmd.stalefix &&
|
||||
(!keep_entry(&old_commit, ooid) || !keep_entry(&new_commit, noid)))
|
||||
return 1;
|
||||
|
||||
if (timestamp < cb->cmd.expire_unreachable) {
|
||||
switch (cb->unreachable_expire_kind) {
|
||||
case UE_ALWAYS:
|
||||
return 1;
|
||||
case UE_NORMAL:
|
||||
case UE_HEAD:
|
||||
if (unreachable(cb, old_commit, ooid) || unreachable(cb, new_commit, noid))
|
||||
return 1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
if (cb->cmd.recno && --(cb->cmd.recno) == 0)
|
||||
return 1;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int should_expire_reflog_ent_verbose(struct object_id *ooid,
|
||||
struct object_id *noid,
|
||||
const char *email,
|
||||
timestamp_t timestamp, int tz,
|
||||
const char *message, void *cb_data)
|
||||
{
|
||||
struct expire_reflog_policy_cb *cb = cb_data;
|
||||
int expire;
|
||||
|
||||
expire = should_expire_reflog_ent(ooid, noid, email, timestamp, tz,
|
||||
message, cb);
|
||||
|
||||
if (!expire)
|
||||
printf("keep %s", message);
|
||||
else if (cb->dry_run)
|
||||
printf("would prune %s", message);
|
||||
else
|
||||
printf("prune %s", message);
|
||||
|
||||
return expire;
|
||||
}
|
||||
|
||||
static int push_tip_to_list(const char *refname, const struct object_id *oid,
|
||||
int flags, void *cb_data)
|
||||
{
|
||||
struct commit_list **list = cb_data;
|
||||
struct commit *tip_commit;
|
||||
if (flags & REF_ISSYMREF)
|
||||
return 0;
|
||||
tip_commit = lookup_commit_reference_gently(the_repository, oid, 1);
|
||||
if (!tip_commit)
|
||||
return 0;
|
||||
commit_list_insert(tip_commit, list);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int is_head(const char *refname)
|
||||
{
|
||||
switch (ref_type(refname)) {
|
||||
case REF_TYPE_OTHER_PSEUDOREF:
|
||||
case REF_TYPE_MAIN_PSEUDOREF:
|
||||
if (parse_worktree_ref(refname, NULL, NULL, &refname))
|
||||
BUG("not a worktree ref: %s", refname);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return !strcmp(refname, "HEAD");
|
||||
}
|
||||
|
||||
void reflog_expiry_prepare(const char *refname,
|
||||
const struct object_id *oid,
|
||||
void *cb_data)
|
||||
{
|
||||
struct expire_reflog_policy_cb *cb = cb_data;
|
||||
struct commit_list *elem;
|
||||
struct commit *commit = NULL;
|
||||
|
||||
if (!cb->cmd.expire_unreachable || is_head(refname)) {
|
||||
cb->unreachable_expire_kind = UE_HEAD;
|
||||
} else {
|
||||
commit = lookup_commit(the_repository, oid);
|
||||
cb->unreachable_expire_kind = commit ? UE_NORMAL : UE_ALWAYS;
|
||||
}
|
||||
|
||||
if (cb->cmd.expire_unreachable <= cb->cmd.expire_total)
|
||||
cb->unreachable_expire_kind = UE_ALWAYS;
|
||||
|
||||
switch (cb->unreachable_expire_kind) {
|
||||
case UE_ALWAYS:
|
||||
return;
|
||||
case UE_HEAD:
|
||||
for_each_ref(push_tip_to_list, &cb->tips);
|
||||
for (elem = cb->tips; elem; elem = elem->next)
|
||||
commit_list_insert(elem->item, &cb->mark_list);
|
||||
break;
|
||||
case UE_NORMAL:
|
||||
commit_list_insert(commit, &cb->mark_list);
|
||||
/* For reflog_expiry_cleanup() below */
|
||||
cb->tip_commit = commit;
|
||||
}
|
||||
cb->mark_limit = cb->cmd.expire_total;
|
||||
mark_reachable(cb);
|
||||
}
|
||||
|
||||
void reflog_expiry_cleanup(void *cb_data)
|
||||
{
|
||||
struct expire_reflog_policy_cb *cb = cb_data;
|
||||
struct commit_list *elem;
|
||||
|
||||
switch (cb->unreachable_expire_kind) {
|
||||
case UE_ALWAYS:
|
||||
return;
|
||||
case UE_HEAD:
|
||||
for (elem = cb->tips; elem; elem = elem->next)
|
||||
clear_commit_marks(elem->item, REACHABLE);
|
||||
free_commit_list(cb->tips);
|
||||
break;
|
||||
case UE_NORMAL:
|
||||
clear_commit_marks(cb->tip_commit, REACHABLE);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
int count_reflog_ent(struct object_id *ooid, struct object_id *noid,
|
||||
const char *email, timestamp_t timestamp, int tz,
|
||||
const char *message, void *cb_data)
|
||||
{
|
||||
struct cmd_reflog_expire_cb *cb = cb_data;
|
||||
if (!cb->expire_total || timestamp < cb->expire_total)
|
||||
cb->recno++;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int reflog_delete(const char *rev, enum expire_reflog_flags flags, int verbose)
|
||||
{
|
||||
struct cmd_reflog_expire_cb cmd = { 0 };
|
||||
int status = 0;
|
||||
reflog_expiry_should_prune_fn *should_prune_fn = should_expire_reflog_ent;
|
||||
const char *spec = strstr(rev, "@{");
|
||||
char *ep, *ref;
|
||||
int recno;
|
||||
struct expire_reflog_policy_cb cb = {
|
||||
.dry_run = !!(flags & EXPIRE_REFLOGS_DRY_RUN),
|
||||
};
|
||||
|
||||
if (verbose)
|
||||
should_prune_fn = should_expire_reflog_ent_verbose;
|
||||
|
||||
if (!spec)
|
||||
return error(_("not a reflog: %s"), rev);
|
||||
|
||||
if (!dwim_log(rev, spec - rev, NULL, &ref)) {
|
||||
status |= error(_("no reflog for '%s'"), rev);
|
||||
goto cleanup;
|
||||
}
|
||||
|
||||
recno = strtoul(spec + 2, &ep, 10);
|
||||
if (*ep == '}') {
|
||||
cmd.recno = -recno;
|
||||
for_each_reflog_ent(ref, count_reflog_ent, &cmd);
|
||||
} else {
|
||||
cmd.expire_total = approxidate(spec + 2);
|
||||
for_each_reflog_ent(ref, count_reflog_ent, &cmd);
|
||||
cmd.expire_total = 0;
|
||||
}
|
||||
|
||||
cb.cmd = cmd;
|
||||
status |= reflog_expire(ref, flags,
|
||||
reflog_expiry_prepare,
|
||||
should_prune_fn,
|
||||
reflog_expiry_cleanup,
|
||||
&cb);
|
||||
|
||||
cleanup:
|
||||
free(ref);
|
||||
return status;
|
||||
}
|
||||
43
reflog.h
Normal file
43
reflog.h
Normal file
@ -0,0 +1,43 @@
|
||||
#ifndef REFLOG_H
|
||||
#define REFLOG_H
|
||||
#include "refs.h"
|
||||
|
||||
struct cmd_reflog_expire_cb {
|
||||
int stalefix;
|
||||
int explicit_expiry;
|
||||
timestamp_t expire_total;
|
||||
timestamp_t expire_unreachable;
|
||||
int recno;
|
||||
};
|
||||
|
||||
struct expire_reflog_policy_cb {
|
||||
enum {
|
||||
UE_NORMAL,
|
||||
UE_ALWAYS,
|
||||
UE_HEAD
|
||||
} unreachable_expire_kind;
|
||||
struct commit_list *mark_list;
|
||||
unsigned long mark_limit;
|
||||
struct cmd_reflog_expire_cb cmd;
|
||||
struct commit *tip_commit;
|
||||
struct commit_list *tips;
|
||||
unsigned int dry_run:1;
|
||||
};
|
||||
|
||||
int reflog_delete(const char *rev, enum expire_reflog_flags flags,
|
||||
int verbose);
|
||||
void reflog_expiry_cleanup(void *cb_data);
|
||||
void reflog_expiry_prepare(const char *refname, const struct object_id *oid,
|
||||
void *cb_data);
|
||||
int should_expire_reflog_ent(struct object_id *ooid, struct object_id *noid,
|
||||
const char *email, timestamp_t timestamp, int tz,
|
||||
const char *message, void *cb_data);
|
||||
int count_reflog_ent(struct object_id *ooid, struct object_id *noid,
|
||||
const char *email, timestamp_t timestamp, int tz,
|
||||
const char *message, void *cb_data);
|
||||
int should_expire_reflog_ent_verbose(struct object_id *ooid,
|
||||
struct object_id *noid,
|
||||
const char *email,
|
||||
timestamp_t timestamp, int tz,
|
||||
const char *message, void *cb_data);
|
||||
#endif /* REFLOG_H */
|
||||
Loading…
Reference in New Issue
Block a user