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authorJunio C Hamano <gitster@pobox.com>2008-06-04 22:58:40 -0700
committerShawn O. Pearce <spearce@spearce.org>2008-10-12 13:21:51 -0700
commit96e117099c0e4f7d508eb071f60b6275038f6f37 (patch)
treee4879be8b4b1c6288a34842428e36657e75743ec /builtin-blame.c
parent9991030c0c97285087e5da86cfdbaf143a8a74cb (diff)
downloadgit-96e117099c0e4f7d508eb071f60b6275038f6f37.tar.gz
blame: show "previous" information in --porcelain/--incremental format
When the final blame is laid for a line to a <commit, path> pair, it also gives a "previous" information to --porcelain and --incremental output format. It gives the parent commit of the blamed commit, _and_ a path in that parent commit that corresponds to the blamed path --- in short, it is the origin that would have been blamed (or passed blame through) for the line _if_ the blamed commit did not change that line. This unfortunately makes sanity checking of refcount quite complex, so I ripped it out for now. Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin-blame.c')
-rw-r--r--builtin-blame.c42
1 files changed, 12 insertions, 30 deletions
diff --git a/builtin-blame.c b/builtin-blame.c
index 163d2dc34c..e386120596 100644
--- a/builtin-blame.c
+++ b/builtin-blame.c
@@ -73,6 +73,7 @@ static unsigned blame_copy_score;
*/
struct origin {
int refcnt;
+ struct origin *previous;
struct commit *commit;
mmfile_t file;
unsigned char blob_sha1[20];
@@ -114,6 +115,8 @@ static inline struct origin *origin_incref(struct origin *o)
static void origin_decref(struct origin *o)
{
if (o && --o->refcnt <= 0) {
+ if (o->previous)
+ origin_decref(o->previous);
free(o->file.ptr);
free(o);
}
@@ -1292,6 +1295,10 @@ static void pass_blame(struct scoreboard *sb, struct origin *origin, int opt)
struct origin *porigin = sg_origin[i];
if (!porigin)
continue;
+ if (!origin->previous) {
+ origin_incref(porigin);
+ origin->previous = porigin;
+ }
if (pass_blame_to_parent(sb, origin, porigin))
goto finish;
}
@@ -1515,6 +1522,11 @@ static int emit_one_suspect_detail(struct origin *suspect)
printf("summary %s\n", ci.summary);
if (suspect->commit->object.flags & UNINTERESTING)
printf("boundary\n");
+ if (suspect->previous) {
+ struct origin *prev = suspect->previous;
+ printf("previous %s ", sha1_to_hex(prev->commit->object.sha1));
+ write_name_quoted(prev->path, stdout, '\n');
+ }
return 1;
}
@@ -1878,36 +1890,6 @@ static void sanity_check_refcnt(struct scoreboard *sb)
baa = 1;
}
}
- for (ent = sb->ent; ent; ent = ent->next) {
- /* Mark the ones that haven't been checked */
- if (0 < ent->suspect->refcnt)
- ent->suspect->refcnt = -ent->suspect->refcnt;
- }
- for (ent = sb->ent; ent; ent = ent->next) {
- /*
- * ... then pick each and see if they have the the
- * correct refcnt.
- */
- int found;
- struct blame_entry *e;
- struct origin *suspect = ent->suspect;
-
- if (0 < suspect->refcnt)
- continue;
- suspect->refcnt = -suspect->refcnt; /* Unmark */
- for (found = 0, e = sb->ent; e; e = e->next) {
- if (e->suspect != suspect)
- continue;
- found++;
- }
- if (suspect->refcnt != found) {
- fprintf(stderr, "%s in %s has refcnt %d, not %d\n",
- ent->suspect->path,
- sha1_to_hex(ent->suspect->commit->object.sha1),
- ent->suspect->refcnt, found);
- baa = 2;
- }
- }
if (baa) {
int opt = 0160;
find_alignment(sb, &opt);