diff options
author | Junio C Hamano <gitster@pobox.com> | 2015-11-04 02:13:09 +0300 |
---|---|---|
committer | Junio C Hamano <gitster@pobox.com> | 2015-11-04 02:13:10 +0300 |
commit | 6784eb5ad93da15d24a5d111a3d6df618f98532f (patch) | |
tree | 1c0311803176e831745024d632c146dd21a9808e /builtin | |
parent | a59d1d8035a1a6d878274e97818c56bb691ac5c0 (diff) | |
parent | 700fd28e4f3ecd6e7b5f8f2098e62ffef9ab958b (diff) |
Merge branch 'mk/blame-first-parent'
"git blame" learnt to take "--first-parent" and "--reverse" at the
same time when it makes sense.
* mk/blame-first-parent:
blame: allow blame --reverse --first-parent when it makes sense
blame: extract find_single_final
blame: test to describe use of blame --reverse --first-parent
Diffstat (limited to 'builtin')
-rw-r--r-- | builtin/blame.c | 61 |
1 files changed, 47 insertions, 14 deletions
diff --git a/builtin/blame.c b/builtin/blame.c index 3b80e8fd75..83612f5b64 100644 --- a/builtin/blame.c +++ b/builtin/blame.c @@ -2402,16 +2402,11 @@ static struct commit *fake_working_tree_commit(struct diff_options *opt, return commit; } -static char *prepare_final(struct scoreboard *sb) +static struct object_array_entry *find_single_final(struct rev_info *revs) { int i; - const char *final_commit_name = NULL; - struct rev_info *revs = sb->revs; + struct object_array_entry *found = NULL; - /* - * There must be one and only one positive commit in the - * revs->pending array. - */ for (i = 0; i < revs->pending.nr; i++) { struct object *obj = revs->pending.objects[i].item; if (obj->flags & UNINTERESTING) @@ -2420,14 +2415,24 @@ static char *prepare_final(struct scoreboard *sb) obj = deref_tag(obj, NULL, 0); if (obj->type != OBJ_COMMIT) die("Non commit %s?", revs->pending.objects[i].name); - if (sb->final) + if (found) die("More than one commit to dig from %s and %s?", revs->pending.objects[i].name, - final_commit_name); - sb->final = (struct commit *) obj; - final_commit_name = revs->pending.objects[i].name; + found->name); + found = &(revs->pending.objects[i]); + } + return found; +} + +static char *prepare_final(struct scoreboard *sb) +{ + struct object_array_entry *found = find_single_final(sb->revs); + if (found) { + sb->final = (struct commit *) found->item; + return xstrdup(found->name); + } else { + return NULL; } - return xstrdup_or_null(final_commit_name); } static char *prepare_initial(struct scoreboard *sb) @@ -2503,6 +2508,7 @@ int cmd_blame(int argc, const char **argv, const char *prefix) long dashdash_pos, lno; char *final_commit_name = NULL; enum object_type type; + struct commit *final_commit = NULL; static struct string_list range_list; static int output_option = 0, opt = 0; @@ -2692,11 +2698,11 @@ parse_done: } else if (contents_from) die("--contents and --reverse do not blend well."); - else if (revs.first_parent_only) - die("combining --first-parent and --reverse is not supported"); else { final_commit_name = prepare_initial(&sb); sb.commits.compare = compare_commits_by_reverse_commit_date; + if (revs.first_parent_only) + revs.children.name = NULL; } if (!sb.final) { @@ -2713,6 +2719,14 @@ parse_done: else if (contents_from) die("Cannot use --contents with final commit object name"); + if (reverse && revs.first_parent_only) { + struct object_array_entry *entry = find_single_final(sb.revs); + if (!entry) + die("--reverse and --first-parent together require specified latest commit"); + else + final_commit = (struct commit*) entry->item; + } + /* * If we have bottom, this will mark the ancestors of the * bottom commits we would reach while traversing as @@ -2721,6 +2735,25 @@ parse_done: if (prepare_revision_walk(&revs)) die(_("revision walk setup failed")); + if (reverse && revs.first_parent_only) { + struct commit *c = final_commit; + + sb.revs->children.name = "children"; + while (c->parents && + hashcmp(c->object.sha1, sb.final->object.sha1)) { + struct commit_list *l = xcalloc(1, sizeof(*l)); + + l->item = c; + if (add_decoration(&sb.revs->children, + &c->parents->item->object, l)) + die("BUG: not unique item in first-parent chain"); + c = c->parents->item; + } + + if (hashcmp(c->object.sha1, sb.final->object.sha1)) + die("--reverse --first-parent together require range along first-parent chain"); + } + if (is_null_sha1(sb.final->object.sha1)) { o = sb.final->util; sb.final_buf = xmemdupz(o->file.ptr, o->file.size); |