Beispiel #1
0
static int reachable(struct commit *want)
{
	struct commit_list *work = NULL;

	commit_list_insert_by_date(want, &work);
	while (work) {
		struct commit_list *list = work->next;
		struct commit *commit = work->item;
		free(work);
		work = list;

		if (commit->object.flags & THEY_HAVE) {
			want->object.flags |= COMMON_KNOWN;
			break;
		}
		if (!commit->object.parsed)
			parse_object(commit->object.sha1);
		if (commit->object.flags & REACHABLE)
			continue;
		commit->object.flags |= REACHABLE;
		if (commit->date < oldest_have)
			continue;
		for (list = commit->parents; list; list = list->next) {
			struct commit *parent = list->item;
			if (!(parent->object.flags & REACHABLE))
				commit_list_insert_by_date(parent, &work);
		}
	}
	want->object.flags |= REACHABLE;
	clear_commit_marks(want, REACHABLE);
	free_commit_list(work);
	return (want->object.flags & COMMON_KNOWN);
}
Beispiel #2
0
static unsigned long finish_depth_computation(
	struct commit_list **list,
	struct possible_tag *best)
{
	unsigned long seen_commits = 0;
	while (*list) {
		struct commit *c = pop_commit(list);
		struct commit_list *parents = c->parents;
		seen_commits++;
		if (c->object.flags & best->flag_within) {
			struct commit_list *a = *list;
			while (a) {
				struct commit *i = a->item;
				if (!(i->object.flags & best->flag_within))
					break;
				a = a->next;
			}
			if (!a)
				break;
		} else
			best->depth++;
		while (parents) {
			struct commit *p = parents->item;
			parse_commit(p);
			if (!(p->object.flags & SEEN))
				commit_list_insert_by_date(p, list);
			p->object.flags |= c->object.flags;
			parents = parents->next;
		}
	}
	return seen_commits;
}
static int mark_complete(const char *path, const unsigned char *sha1, int flag, void *cb_data)
{
	struct commit *commit = lookup_commit_reference_gently(sha1, 1);
	if (commit) {
		commit->object.flags |= COMPLETE;
		commit_list_insert_by_date(commit, &complete);
	}
	return 0;
}
Beispiel #4
0
static void rev_list_push(struct commit *commit, int mark)
{
	if (!(commit->object.flags & mark)) {
		commit->object.flags |= mark;

		if (!(commit->object.parsed))
			if (parse_commit(commit))
				return;

		commit_list_insert_by_date(commit, &rev_list);

		if (!(commit->object.flags & COMMON))
			non_common_revs++;
	}
}
Beispiel #5
0
static int mark_complete(const char *path, const unsigned char *sha1, int flag, void *cb_data)
{
	struct object *o = parse_object(sha1);

	while (o && o->type == OBJ_TAG) {
		struct tag *t = (struct tag *) o;
		if (!t->tagged)
			break; /* broken repository */
		o->flags |= COMPLETE;
		o = parse_object(t->tagged->sha1);
	}
	if (o && o->type == OBJ_COMMIT) {
		struct commit *commit = (struct commit *)o;
		if (!(commit->object.flags & COMPLETE)) {
			commit->object.flags |= COMPLETE;
			commit_list_insert_by_date(commit, &complete);
		}
	}
	return 0;
}
Beispiel #6
0
int cmd_show_branch(int ac, const char **av, const char *prefix)
{
	struct commit *rev[MAX_REVS], *commit;
	char *reflog_msg[MAX_REVS];
	struct commit_list *list = NULL, *seen = NULL;
	unsigned int rev_mask[MAX_REVS];
	int num_rev, i, extra = 0;
	int all_heads = 0, all_remotes = 0;
	int all_mask, all_revs;
	int lifo = 1;
	char head[128];
	const char *head_p;
	int head_len;
	unsigned char head_sha1[20];
	int merge_base = 0;
	int independent = 0;
	int no_name = 0;
	int sha1_name = 0;
	int shown_merge_point = 0;
	int with_current_branch = 0;
	int head_at = -1;
	int topics = 0;
	int dense = 1;
	const char *reflog_base = NULL;
	struct option builtin_show_branch_options[] = {
		OPT_BOOLEAN('a', "all", &all_heads,
			    "show remote-tracking and local branches"),
		OPT_BOOLEAN('r', "remotes", &all_remotes,
			    "show remote-tracking branches"),
		OPT__COLOR(&showbranch_use_color,
			    "color '*!+-' corresponding to the branch"),
		{ OPTION_INTEGER, 0, "more", &extra, "n",
			    "show <n> more commits after the common ancestor",
			    PARSE_OPT_OPTARG, NULL, (intptr_t)1 },
		OPT_SET_INT(0, "list", &extra, "synonym to more=-1", -1),
		OPT_BOOLEAN(0, "no-name", &no_name, "suppress naming strings"),
		OPT_BOOLEAN(0, "current", &with_current_branch,
			    "include the current branch"),
		OPT_BOOLEAN(0, "sha1-name", &sha1_name,
			    "name commits with their object names"),
		OPT_BOOLEAN(0, "merge-base", &merge_base,
			    "show possible merge bases"),
		OPT_BOOLEAN(0, "independent", &independent,
			    "show refs unreachable from any other ref"),
		OPT_BOOLEAN(0, "topo-order", &lifo,
			    "show commits in topological order"),
		OPT_BOOLEAN(0, "topics", &topics,
			    "show only commits not on the first branch"),
		OPT_SET_INT(0, "sparse", &dense,
			    "show merges reachable from only one tip", 0),
		OPT_SET_INT(0, "date-order", &lifo,
			    "show commits where no parent comes before its "
			    "children", 0),
		{ OPTION_CALLBACK, 'g', "reflog", &reflog_base, "<n>[,<base>]",
			    "show <n> most recent ref-log entries starting at "
			    "base",
			    PARSE_OPT_OPTARG | PARSE_OPT_LITERAL_ARGHELP,
			    parse_reflog_param },
		OPT_END()
	};

	git_config(git_show_branch_config, NULL);

	if (showbranch_use_color == -1)
		showbranch_use_color = git_use_color_default;

	/* If nothing is specified, try the default first */
	if (ac == 1 && default_num) {
		ac = default_num;
		av = default_arg;
	}

	ac = parse_options(ac, av, prefix, builtin_show_branch_options,
			   show_branch_usage, PARSE_OPT_STOP_AT_NON_OPTION);
	if (all_heads)
		all_remotes = 1;

	if (extra || reflog) {
		/* "listing" mode is incompatible with
		 * independent nor merge-base modes.
		 */
		if (independent || merge_base)
			usage_with_options(show_branch_usage,
					   builtin_show_branch_options);
		if (reflog && ((0 < extra) || all_heads || all_remotes))
			/*
			 * Asking for --more in reflog mode does not
			 * make sense.  --list is Ok.
			 *
			 * Also --all and --remotes do not make sense either.
			 */
			die("--reflog is incompatible with --all, --remotes, "
			    "--independent or --merge-base");
	}

	/* If nothing is specified, show all branches by default */
	if (ac + all_heads + all_remotes == 0)
		all_heads = 1;

	if (reflog) {
		unsigned char sha1[20];
		char nth_desc[256];
		char *ref;
		int base = 0;

		if (ac == 0) {
			static const char *fake_av[2];
			const char *refname;

			refname = resolve_ref("HEAD", sha1, 1, NULL);
			fake_av[0] = xstrdup(refname);
			fake_av[1] = NULL;
			av = fake_av;
			ac = 1;
		}
		if (ac != 1)
			die("--reflog option needs one branch name");

		if (MAX_REVS < reflog)
			die("Only %d entries can be shown at one time.",
			    MAX_REVS);
		if (!dwim_ref(*av, strlen(*av), sha1, &ref))
			die("No such ref %s", *av);

		/* Has the base been specified? */
		if (reflog_base) {
			char *ep;
			base = strtoul(reflog_base, &ep, 10);
			if (*ep) {
				/* Ah, that is a date spec... */
				unsigned long at;
				at = approxidate(reflog_base);
				read_ref_at(ref, at, -1, sha1, NULL,
					    NULL, NULL, &base);
			}
		}

		for (i = 0; i < reflog; i++) {
			char *logmsg, *m;
			const char *msg;
			unsigned long timestamp;
			int tz;

			if (read_ref_at(ref, 0, base+i, sha1, &logmsg,
					&timestamp, &tz, NULL)) {
				reflog = i;
				break;
			}
			msg = strchr(logmsg, '\t');
			if (!msg)
				msg = "(none)";
			else
				msg++;
			m = xmalloc(strlen(msg) + 200);
			sprintf(m, "(%s) %s",
				show_date(timestamp, tz, 1),
				msg);
			reflog_msg[i] = m;
			free(logmsg);
			sprintf(nth_desc, "%s@{%d}", *av, base+i);
			append_ref(nth_desc, sha1, 1);
		}
	}
	else if (all_heads + all_remotes)
		snarf_refs(all_heads, all_remotes);
	else {
		while (0 < ac) {
			append_one_rev(*av);
			ac--; av++;
		}
	}

	head_p = resolve_ref("HEAD", head_sha1, 1, NULL);
	if (head_p) {
		head_len = strlen(head_p);
		memcpy(head, head_p, head_len + 1);
	}
	else {
		head_len = 0;
		head[0] = 0;
	}

	if (with_current_branch && head_p) {
		int has_head = 0;
		for (i = 0; !has_head && i < ref_name_cnt; i++) {
			/* We are only interested in adding the branch
			 * HEAD points at.
			 */
			if (rev_is_head(head,
					head_len,
					ref_name[i],
					head_sha1, NULL))
				has_head++;
		}
		if (!has_head) {
			int offset = !prefixcmp(head, "refs/heads/") ? 11 : 0;
			append_one_rev(head + offset);
		}
	}

	if (!ref_name_cnt) {
		fprintf(stderr, "No revs to be shown.\n");
		exit(0);
	}

	for (num_rev = 0; ref_name[num_rev]; num_rev++) {
		unsigned char revkey[20];
		unsigned int flag = 1u << (num_rev + REV_SHIFT);

		if (MAX_REVS <= num_rev)
			die("cannot handle more than %d revs.", MAX_REVS);
		if (get_sha1(ref_name[num_rev], revkey))
			die("'%s' is not a valid ref.", ref_name[num_rev]);
		commit = lookup_commit_reference(revkey);
		if (!commit)
			die("cannot find commit %s (%s)",
			    ref_name[num_rev], revkey);
		parse_commit(commit);
		mark_seen(commit, &seen);

		/* rev#0 uses bit REV_SHIFT, rev#1 uses bit REV_SHIFT+1,
		 * and so on.  REV_SHIFT bits from bit 0 are used for
		 * internal bookkeeping.
		 */
		commit->object.flags |= flag;
		if (commit->object.flags == flag)
			commit_list_insert_by_date(commit, &list);
		rev[num_rev] = commit;
	}
	for (i = 0; i < num_rev; i++)
		rev_mask[i] = rev[i]->object.flags;

	if (0 <= extra)
		join_revs(&list, &seen, num_rev, extra);

	commit_list_sort_by_date(&seen);

	if (merge_base)
		return show_merge_base(seen, num_rev);

	if (independent)
		return show_independent(rev, num_rev, ref_name, rev_mask);

	/* Show list; --more=-1 means list-only */
	if (1 < num_rev || extra < 0) {
		for (i = 0; i < num_rev; i++) {
			int j;
			int is_head = rev_is_head(head,
						  head_len,
						  ref_name[i],
						  head_sha1,
						  rev[i]->object.sha1);
			if (extra < 0)
				printf("%c [%s] ",
				       is_head ? '*' : ' ', ref_name[i]);
			else {
				for (j = 0; j < i; j++)
					putchar(' ');
				printf("%s%c%s [%s] ",
				       get_color_code(i % COLUMN_COLORS_MAX),
				       is_head ? '*' : '!',
				       get_color_reset_code(), ref_name[i]);
			}

			if (!reflog) {
				/* header lines never need name */
				show_one_commit(rev[i], 1);
			}
			else
				puts(reflog_msg[i]);

			if (is_head)
				head_at = i;
		}
		if (0 <= extra) {
			for (i = 0; i < num_rev; i++)
				putchar('-');
			putchar('\n');
		}
	}
	if (extra < 0)
		exit(0);

	/* Sort topologically */
	sort_in_topological_order(&seen, lifo);

	/* Give names to commits */
	if (!sha1_name && !no_name)
		name_commits(seen, rev, ref_name, num_rev);

	all_mask = ((1u << (REV_SHIFT + num_rev)) - 1);
	all_revs = all_mask & ~((1u << REV_SHIFT) - 1);

	while (seen) {
		struct commit *commit = pop_one_commit(&seen);
		int this_flag = commit->object.flags;
		int is_merge_point = ((this_flag & all_revs) == all_revs);

		shown_merge_point |= is_merge_point;

		if (1 < num_rev) {
			int is_merge = !!(commit->parents &&
					  commit->parents->next);
			if (topics &&
			    !is_merge_point &&
			    (this_flag & (1u << REV_SHIFT)))
				continue;
			if (dense && is_merge &&
			    omit_in_dense(commit, rev, num_rev))
				continue;
			for (i = 0; i < num_rev; i++) {
				int mark;
				if (!(this_flag & (1u << (i + REV_SHIFT))))
					mark = ' ';
				else if (is_merge)
					mark = '-';
				else if (i == head_at)
					mark = '*';
				else
					mark = '+';
				printf("%s%c%s",
				       get_color_code(i % COLUMN_COLORS_MAX),
				       mark, get_color_reset_code());
			}
			putchar(' ');
		}
		show_one_commit(commit, no_name);

		if (shown_merge_point && --extra < 0)
			break;
	}
	return 0;
}
Beispiel #7
0
static void join_revs(struct commit_list **list_p,
		      struct commit_list **seen_p,
		      int num_rev, int extra)
{
	int all_mask = ((1u << (REV_SHIFT + num_rev)) - 1);
	int all_revs = all_mask & ~((1u << REV_SHIFT) - 1);

	while (*list_p) {
		struct commit_list *parents;
		int still_interesting = !!interesting(*list_p);
		struct commit *commit = pop_one_commit(list_p);
		int flags = commit->object.flags & all_mask;

		if (!still_interesting && extra <= 0)
			break;

		mark_seen(commit, seen_p);
		if ((flags & all_revs) == all_revs)
			flags |= UNINTERESTING;
		parents = commit->parents;

		while (parents) {
			struct commit *p = parents->item;
			int this_flag = p->object.flags;
			parents = parents->next;
			if ((this_flag & flags) == flags)
				continue;
			if (!p->object.parsed)
				parse_commit(p);
			if (mark_seen(p, seen_p) && !still_interesting)
				extra--;
			p->object.flags |= flags;
			commit_list_insert_by_date(p, list_p);
		}
	}

	/*
	 * Postprocess to complete well-poisoning.
	 *
	 * At this point we have all the commits we have seen in
	 * seen_p list.  Mark anything that can be reached from
	 * uninteresting commits not interesting.
	 */
	for (;;) {
		int changed = 0;
		struct commit_list *s;
		for (s = *seen_p; s; s = s->next) {
			struct commit *c = s->item;
			struct commit_list *parents;

			if (((c->object.flags & all_revs) != all_revs) &&
			    !(c->object.flags & UNINTERESTING))
				continue;

			/* The current commit is either a merge base or
			 * already uninteresting one.  Mark its parents
			 * as uninteresting commits _only_ if they are
			 * already parsed.  No reason to find new ones
			 * here.
			 */
			parents = c->parents;
			while (parents) {
				struct commit *p = parents->item;
				parents = parents->next;
				if (!(p->object.flags & UNINTERESTING)) {
					p->object.flags |= UNINTERESTING;
					changed = 1;
				}
			}
		}
		if (!changed)
			break;
	}
}
Beispiel #8
0
static void describe(const char *arg, int last_one)
{
	unsigned char sha1[20];
	struct commit *cmit, *gave_up_on = NULL;
	struct commit_list *list;
	struct commit_name *n;
	struct possible_tag all_matches[MAX_TAGS];
	unsigned int match_cnt = 0, annotated_cnt = 0, cur_match;
	unsigned long seen_commits = 0;
	unsigned int unannotated_cnt = 0;

	if (get_sha1(arg, sha1))
		die(_("Not a valid object name %s"), arg);
	cmit = lookup_commit_reference(sha1);
	if (!cmit)
		die(_("%s is not a valid '%s' object"), arg, commit_type);

	n = find_commit_name(cmit->object.sha1);
	if (n && (tags || all || n->prio == 2)) {
		/*
		 * Exact match to an existing ref.
		 */
		display_name(n);
		if (longformat)
			show_suffix(0, n->tag ? n->tag->tagged->sha1 : sha1);
		if (dirty)
			printf("%s", dirty);
		printf("\n");
		return;
	}

	if (!max_candidates)
		die(_("no tag exactly matches '%s'"), sha1_to_hex(cmit->object.sha1));
	if (debug)
		fprintf(stderr, _("searching to describe %s\n"), arg);

	if (!have_util) {
		for_each_hash(&names, set_util, NULL);
		have_util = 1;
	}

	list = NULL;
	cmit->object.flags = SEEN;
	commit_list_insert(cmit, &list);
	while (list) {
		struct commit *c = pop_commit(&list);
		struct commit_list *parents = c->parents;
		seen_commits++;
		n = c->util;
		if (n) {
			if (!tags && !all && n->prio < 2) {
				unannotated_cnt++;
			} else if (match_cnt < max_candidates) {
				struct possible_tag *t = &all_matches[match_cnt++];
				t->name = n;
				t->depth = seen_commits - 1;
				t->flag_within = 1u << match_cnt;
				t->found_order = match_cnt;
				c->object.flags |= t->flag_within;
				if (n->prio == 2)
					annotated_cnt++;
			}
			else {
				gave_up_on = c;
				break;
			}
		}
		for (cur_match = 0; cur_match < match_cnt; cur_match++) {
			struct possible_tag *t = &all_matches[cur_match];
			if (!(c->object.flags & t->flag_within))
				t->depth++;
		}
		if (annotated_cnt && !list) {
			if (debug)
				fprintf(stderr, _("finished search at %s\n"),
					sha1_to_hex(c->object.sha1));
			break;
		}
		while (parents) {
			struct commit *p = parents->item;
			parse_commit(p);
			if (!(p->object.flags & SEEN))
				commit_list_insert_by_date(p, &list);
			p->object.flags |= c->object.flags;
			parents = parents->next;
		}
	}

	if (!match_cnt) {
		const unsigned char *sha1 = cmit->object.sha1;
		if (always) {
			printf("%s", find_unique_abbrev(sha1, abbrev));
			if (dirty)
				printf("%s", dirty);
			printf("\n");
			return;
		}
		if (unannotated_cnt)
			die(_("No annotated tags can describe '%s'.\n"
			    "However, there were unannotated tags: try --tags."),
			    sha1_to_hex(sha1));
		else
			die(_("No tags can describe '%s'.\n"
			    "Try --always, or create some tags."),
			    sha1_to_hex(sha1));
	}

	qsort(all_matches, match_cnt, sizeof(all_matches[0]), compare_pt);

	if (gave_up_on) {
		commit_list_insert_by_date(gave_up_on, &list);
		seen_commits--;
	}
	seen_commits += finish_depth_computation(&list, &all_matches[0]);
	free_commit_list(list);

	if (debug) {
		for (cur_match = 0; cur_match < match_cnt; cur_match++) {
			struct possible_tag *t = &all_matches[cur_match];
			fprintf(stderr, " %-11s %8d %s\n",
				prio_names[t->name->prio],
				t->depth, t->name->path);
		}
		fprintf(stderr, _("traversed %lu commits\n"), seen_commits);
		if (gave_up_on) {
			fprintf(stderr,
				_("more than %i tags found; listed %i most recent\n"
				"gave up search at %s\n"),
				max_candidates, max_candidates,
				sha1_to_hex(gave_up_on->object.sha1));
		}
	}

	display_name(all_matches[0].name);
	if (abbrev)
		show_suffix(all_matches[0].depth, cmit->object.sha1);
	if (dirty)
		printf("%s", dirty);
	printf("\n");

	if (!last_one)
		clear_commit_marks(cmit, -1);
}