From 9991030c0c97285087e5da86cfdbaf143a8a74cb Mon Sep 17 00:00:00 2001
From: Junio C Hamano <gitster@pobox.com>
Date: Wed, 4 Jun 2008 22:48:42 -0700
Subject: [PATCH 1/2] git-blame: refactor code to emit "porcelain format"
output
Both the --porcelain and --incremental format shared the same output
format but implemented with two identical codepaths. This merges them
into one shared function.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
builtin-blame.c | 65 +++++++++++++++++++++++--------------------------
1 file changed, 31 insertions(+), 34 deletions(-)
diff --git a/builtin-blame.c b/builtin-blame.c
index 48cc0c175d5..163d2dc34c1 100644
--- a/builtin-blame.c
+++ b/builtin-blame.c
@@ -1490,6 +1490,34 @@ static void write_filename_info(const char *path)
write_name_quoted(path, stdout, '\n');
}
+/*
+ * Porcelain/Incremental format wants to show a lot of details per
+ * commit. Instead of repeating this every line, emit it only once,
+ * the first time each commit appears in the output.
+ */
+static int emit_one_suspect_detail(struct origin *suspect)
+{
+ struct commit_info ci;
+
+ if (suspect->commit->object.flags & METAINFO_SHOWN)
+ return 0;
+
+ suspect->commit->object.flags |= METAINFO_SHOWN;
+ get_commit_info(suspect->commit, &ci, 1);
+ printf("author %s\n", ci.author);
+ printf("author-mail %s\n", ci.author_mail);
+ printf("author-time %lu\n", ci.author_time);
+ printf("author-tz %s\n", ci.author_tz);
+ printf("committer %s\n", ci.committer);
+ printf("committer-mail %s\n", ci.committer_mail);
+ printf("committer-time %lu\n", ci.committer_time);
+ printf("committer-tz %s\n", ci.committer_tz);
+ printf("summary %s\n", ci.summary);
+ if (suspect->commit->object.flags & UNINTERESTING)
+ printf("boundary\n");
+ return 1;
+}
+
/*
* The blame_entry is found to be guilty for the range. Mark it
* as such, and show it in incremental output.
@@ -1505,22 +1533,7 @@ static void found_guilty_entry(struct blame_entry *ent)
printf("%s %d %d %d\n",
sha1_to_hex(suspect->commit->object.sha1),
ent->s_lno + 1, ent->lno + 1, ent->num_lines);
- if (!(suspect->commit->object.flags & METAINFO_SHOWN)) {
- struct commit_info ci;
- suspect->commit->object.flags |= METAINFO_SHOWN;
- get_commit_info(suspect->commit, &ci, 1);
- printf("author %s\n", ci.author);
- printf("author-mail %s\n", ci.author_mail);
- printf("author-time %lu\n", ci.author_time);
- printf("author-tz %s\n", ci.author_tz);
- printf("committer %s\n", ci.committer);
- printf("committer-mail %s\n", ci.committer_mail);
- printf("committer-time %lu\n", ci.committer_time);
- printf("committer-tz %s\n", ci.committer_tz);
- printf("summary %s\n", ci.summary);
- if (suspect->commit->object.flags & UNINTERESTING)
- printf("boundary\n");
- }
+ emit_one_suspect_detail(suspect);
write_filename_info(suspect->path);
maybe_flush_or_die(stdout, "stdout");
}
@@ -1627,24 +1640,8 @@ static void emit_porcelain(struct scoreboard *sb, struct blame_entry *ent)
ent->s_lno + 1,
ent->lno + 1,
ent->num_lines);
- if (!(suspect->commit->object.flags & METAINFO_SHOWN)) {
- struct commit_info ci;
- suspect->commit->object.flags |= METAINFO_SHOWN;
- get_commit_info(suspect->commit, &ci, 1);
- printf("author %s\n", ci.author);
- printf("author-mail %s\n", ci.author_mail);
- printf("author-time %lu\n", ci.author_time);
- printf("author-tz %s\n", ci.author_tz);
- printf("committer %s\n", ci.committer);
- printf("committer-mail %s\n", ci.committer_mail);
- printf("committer-time %lu\n", ci.committer_time);
- printf("committer-tz %s\n", ci.committer_tz);
- write_filename_info(suspect->path);
- printf("summary %s\n", ci.summary);
- if (suspect->commit->object.flags & UNINTERESTING)
- printf("boundary\n");
- }
- else if (suspect->commit->object.flags & MORE_THAN_ONE_PATH)
+ if (emit_one_suspect_detail(suspect) ||
+ (suspect->commit->object.flags & MORE_THAN_ONE_PATH))
write_filename_info(suspect->path);
cp = nth_line(sb, ent->lno);
From 96e117099c0e4f7d508eb071f60b6275038f6f37 Mon Sep 17 00:00:00 2001
From: Junio C Hamano <gitster@pobox.com>
Date: Wed, 4 Jun 2008 22:58:40 -0700
Subject: [PATCH 2/2] 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>
---
builtin-blame.c | 42 ++++++++++++------------------------------
1 file changed, 12 insertions(+), 30 deletions(-)
diff --git a/builtin-blame.c b/builtin-blame.c
index 163d2dc34c1..e386120596e 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);