[PATCH 2/2] Add a 'source' decorator for commits
- From
Linus Torvalds <torvalds@linux-foundation.org>
- Date
- Oct 27, 2008, 20:07 UTC
- Message-ID
- <alpine.LFD.2.00.0810271306230.3386@nehalem.linux-foundation.org>
- In-Reply-To
- <alpine.LFD.2.00.0810271305500.3386@nehalem.linux-foundation.org>
We already support decorating commits by tags or branches that point to them, but especially when we are looking at multiple branches together, we sometimes want to see _how_ we reached a particular commit.
We can abuse the '->util' field in the commit to keep track of that as we walk the commit lists, and get a reasonably useful view into which branch or tag first reaches that commit.
Of course, if the commit is reachable through multiple sources (which is common), our particular choice of "first" reachable is entirely random and depends on the particular path we happened to follow.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> --- builtin-log.c | 2 ++ builtin-rev-list.c | 2 +- log-tree.c | 8 +++++--- log-tree.h | 2 +- revision.c | 4 ++++ revision.h | 1 + 6 files changed, 14 insertions(+), 5 deletions(-)
diff --git a/builtin-log.c b/builtin-log.c index a0944f7..176cbce 100644 --- a/builtin-log.c +++ b/builtin-log.c @@ -56,6 +56,8 @@ static void cmd_log_init(int argc, const char **argv, const char *prefix, if (!strcmp(arg, "--decorate")) { load_ref_decorations(); decorate = 1; + } else if (!strcmp(arg, "--source")) { + rev->show_source = 1; } else die("unrecognized argument: %s", arg); } diff --git a/builtin-rev-list.c b/builtin-rev-list.c index 06cdeb7..857742a 100644 --- a/builtin-rev-list.c +++ b/builtin-rev-list.c @@ -100,7 +100,7 @@ static void show_commit(struct commit *commit) children = children->next; } } - show_decorations(commit); + show_decorations(&revs, commit); if (revs.commit_format == CMIT_FMT_ONELINE) putchar(' '); else diff --git a/log-tree.c b/log-tree.c index cec3c06..cf7947b 100644 --- a/log-tree.c +++ b/log-tree.c @@ -52,11 +52,13 @@ static void show_parents(struct commit *commit, int abbrev) } } -void show_decorations(struct commit *commit) +void show_decorations(struct rev_info *opt, struct commit *commit) { const char *prefix; struct name_decoration *decoration; + if (opt->show_source && commit->util) + printf(" %s", (char *) commit->util); decoration = lookup_decoration(&name_decoration, &commit->object); if (!decoration) return; @@ -279,7 +281,7 @@ void show_log(struct rev_info *opt) fputs(diff_unique_abbrev(commit->object.sha1, abbrev_commit), stdout); if (opt->print_parents) show_parents(commit, abbrev_commit); - show_decorations(commit); + show_decorations(opt, commit); if (opt->graph && !graph_is_commit_finished(opt->graph)) { putchar('\n'); graph_show_remainder(opt->graph); @@ -352,7 +354,7 @@ void show_log(struct rev_info *opt) printf(" (from %s)", diff_unique_abbrev(parent->object.sha1, abbrev_commit)); - show_decorations(commit); + show_decorations(opt, commit); printf("%s", diff_get_color_opt(&opt->diffopt, DIFF_RESET)); if (opt->commit_format == CMIT_FMT_ONELINE) { putchar(' '); diff --git a/log-tree.h b/log-tree.h index 3c8127b..f2a9008 100644 --- a/log-tree.h +++ b/log-tree.h @@ -12,7 +12,7 @@ int log_tree_diff_flush(struct rev_info *); int log_tree_commit(struct rev_info *, struct commit *); int log_tree_opt_parse(struct rev_info *, const char **, int); void show_log(struct rev_info *opt); -void show_decorations(struct commit *commit); +void show_decorations(struct rev_info *opt, struct commit *commit); void log_write_email_headers(struct rev_info *opt, const char *name, const char **subject_p, const char **extra_headers_p, diff --git a/revision.c b/revision.c index 2f646de..d45f05a 100644 --- a/revision.c +++ b/revision.c @@ -199,6 +199,8 @@ static struct commit *handle_commit(struct rev_info *revs, struct object *object mark_parents_uninteresting(commit); revs->limited = 1; } + if (revs->show_source && !commit->util) + commit->util = (void *) name; return commit; } @@ -484,6 +486,8 @@ static int add_parents_to_list(struct rev_info *revs, struct commit *commit, if (parse_commit(p) < 0) return -1; + if (revs->show_source && !p->util) + p->util = commit->util; p->object.flags |= left_flag; if (!(p->object.flags & SEEN)) { p->object.flags |= SEEN; diff --git a/revision.h b/revision.h index 2fdb2dd..51a4863 100644 --- a/revision.h +++ b/revision.h @@ -53,6 +53,7 @@ struct rev_info { left_right:1, rewrite_parents:1, print_parents:1, + show_source:1, reverse:1, reverse_output_stage:1, cherry_pick:1,
-- 1.6.0.3.517.g759a.dirty