#define PICKAXE_BLAME_COPY_HARDER 04
#define PICKAXE_BLAME_COPY_HARDEST 010
-/*
- * blame for a blame_entry with score lower than these thresholds
- * is not passed to the parent using move/copy logic.
- */
static unsigned blame_move_score;
static unsigned blame_copy_score;
#define BLAME_DEFAULT_MOVE_SCORE 20
};
static int diff_hunks(mmfile_t *file_a, mmfile_t *file_b,
- xdl_emit_hunk_consume_func_t hunk_func, void *cb_data)
+ xdl_emit_hunk_consume_func_t hunk_func, void *cb_data, int xdl_opts)
{
xpparam_t xpp = {0};
xdemitconf_t xecfg = {0};
int num_read_blob;
int num_get_patch;
int num_commits;
+
+ /*
+ * blame for a blame_entry with score lower than these thresholds
+ * is not passed to the parent using move/copy logic.
+ */
+ unsigned move_score;
+ unsigned copy_score;
+
+ /* use this file's contents as the final image */
+ const char *contents_from;
+
+ /* flags */
+ int reverse;
+ int show_root;
+ int xdl_opts;
+ int no_whole_file_rename;
};
static void sanity_check_refcnt(struct blame_scoreboard *);
fill_origin_blob(&sb->revs->diffopt, target, &file_o, &sb->num_read_blob);
sb->num_get_patch++;
- if (diff_hunks(&file_p, &file_o, blame_chunk_cb, &d))
+ if (diff_hunks(&file_p, &file_o, blame_chunk_cb, &d, sb->xdl_opts))
die("unable to generate diff (%s -> %s)",
oid_to_hex(&parent->commit->object.oid),
oid_to_hex(&target->commit->object.oid));
* file_p partially may match that image.
*/
memset(split, 0, sizeof(struct blame_entry [3]));
- if (diff_hunks(file_p, &file_o, handle_split_cb, &d))
+ if (diff_hunks(file_p, &file_o, handle_split_cb, &d, sb->xdl_opts))
die("unable to generate diff (%s)",
oid_to_hex(&parent->commit->object.oid));
/* remainder, if any, all match the preimage */
next = e->next;
find_copy_in_blob(sb, e, parent, split, &file_p);
if (split[1].suspect &&
- blame_move_score < blame_entry_score(sb, &split[1])) {
+ sb->move_score < blame_entry_score(sb, &split[1])) {
split_blame(blamed, &unblamedtail, split, e);
} else {
e->next = leftover;
decref_split(split);
}
*unblamedtail = NULL;
- toosmall = filter_small(sb, toosmall, &unblamed, blame_move_score);
+ toosmall = filter_small(sb, toosmall, &unblamed, sb->move_score);
} while (unblamed);
target->suspects = reverse_blame(leftover, NULL);
}
for (j = 0; j < num_ents; j++) {
struct blame_entry *split = blame_list[j].split;
if (split[1].suspect &&
- blame_copy_score < blame_entry_score(sb, &split[1])) {
+ sb->copy_score < blame_entry_score(sb, &split[1])) {
split_blame(blamed, &unblamedtail, split,
blame_list[j].ent);
} else {
}
free(blame_list);
*unblamedtail = NULL;
- toosmall = filter_small(sb, toosmall, &unblamed, blame_copy_score);
+ toosmall = filter_small(sb, toosmall, &unblamed, sb->copy_score);
} while (unblamed);
target->suspects = reverse_blame(leftover, NULL);
diff_flush(&diff_opts);
* "parent" (and "porigin"), but what we mean is to find scapegoat to
* exonerate ourselves.
*/
-static struct commit_list *first_scapegoat(struct rev_info *revs, struct commit *commit)
+static struct commit_list *first_scapegoat(struct rev_info *revs, struct commit *commit,
+ int reverse)
{
if (!reverse) {
if (revs->first_parent_only &&
return lookup_decoration(&revs->children, &commit->object);
}
-static int num_scapegoats(struct rev_info *revs, struct commit *commit)
+static int num_scapegoats(struct rev_info *revs, struct commit *commit, int reverse)
{
- struct commit_list *l = first_scapegoat(revs, commit);
+ struct commit_list *l = first_scapegoat(revs, commit, reverse);
return commit_list_count(l);
}
struct blame_entry *toosmall = NULL;
struct blame_entry *blames, **blametail = &blames;
- num_sg = num_scapegoats(revs, commit);
+ num_sg = num_scapegoats(revs, commit, sb->reverse);
if (!num_sg)
goto finish;
else if (num_sg < ARRAY_SIZE(sg_buf))
* The first pass looks for unrenamed path to optimize for
* common cases, then we look for renames in the second pass.
*/
- for (pass = 0; pass < 2 - no_whole_file_rename; pass++) {
+ for (pass = 0; pass < 2 - sb->no_whole_file_rename; pass++) {
struct blame_origin *(*find)(struct commit *, struct blame_origin *);
find = pass ? find_rename : find_origin;
- for (i = 0, sg = first_scapegoat(revs, commit);
+ for (i = 0, sg = first_scapegoat(revs, commit, sb->reverse);
i < num_sg && sg;
sg = sg->next, i++) {
struct commit *p = sg->item;
}
sb->num_commits++;
- for (i = 0, sg = first_scapegoat(revs, commit);
+ for (i = 0, sg = first_scapegoat(revs, commit, sb->reverse);
i < num_sg && sg;
sg = sg->next, i++) {
struct blame_origin *porigin = sg_origin[i];
* Optionally find moves in parents' files.
*/
if (opt & PICKAXE_BLAME_MOVE) {
- filter_small(sb, &toosmall, &origin->suspects, blame_move_score);
+ filter_small(sb, &toosmall, &origin->suspects, sb->move_score);
if (origin->suspects) {
- for (i = 0, sg = first_scapegoat(revs, commit);
+ for (i = 0, sg = first_scapegoat(revs, commit, sb->reverse);
i < num_sg && sg;
sg = sg->next, i++) {
struct blame_origin *porigin = sg_origin[i];
* Optionally find copies from parents' files.
*/
if (opt & PICKAXE_BLAME_COPY) {
- if (blame_copy_score > blame_move_score)
- filter_small(sb, &toosmall, &origin->suspects, blame_copy_score);
- else if (blame_copy_score < blame_move_score) {
+ if (sb->copy_score > sb->move_score)
+ filter_small(sb, &toosmall, &origin->suspects, sb->copy_score);
+ else if (sb->copy_score < sb->move_score) {
origin->suspects = blame_merge(origin->suspects, toosmall);
toosmall = NULL;
- filter_small(sb, &toosmall, &origin->suspects, blame_copy_score);
+ filter_small(sb, &toosmall, &origin->suspects, sb->copy_score);
}
if (!origin->suspects)
goto finish;
- for (i = 0, sg = first_scapegoat(revs, commit);
+ for (i = 0, sg = first_scapegoat(revs, commit, sb->reverse);
i < num_sg && sg;
sg = sg->next, i++) {
struct blame_origin *porigin = sg_origin[i];
*/
blame_origin_incref(suspect);
parse_commit(commit);
- if (reverse ||
+ if (sb->reverse ||
(!(commit->object.flags & UNINTERESTING) &&
!(revs->max_age != -1 && commit->date < revs->max_age)))
pass_blame(sb, suspect, opt);
mark_parents_uninteresting(commit);
}
/* treat root commit as boundary */
- if (!commit->parents && !show_root)
+ if (!commit->parents && !sb->show_root)
commit->object.flags |= UNINTERESTING;
/* Take responsibility for the remaining entries */
opt |= (PICKAXE_BLAME_COPY | PICKAXE_BLAME_MOVE |
PICKAXE_BLAME_COPY_HARDER);
- if (!blame_move_score)
- blame_move_score = BLAME_DEFAULT_MOVE_SCORE;
- if (!blame_copy_score)
- blame_copy_score = BLAME_DEFAULT_COPY_SCORE;
-
/*
* We have collected options unknown to us in argv[1..unk]
* which are to be passed to revision machinery if we are
revs.disable_stdin = 1;
setup_revisions(argc, argv, &revs, NULL);
memset(&sb, 0, sizeof(sb));
+ sb.move_score = BLAME_DEFAULT_MOVE_SCORE;
+ sb.copy_score = BLAME_DEFAULT_COPY_SCORE;
sb.revs = &revs;
+ sb.contents_from = contents_from;
+ sb.reverse = reverse;
if (!reverse) {
final_commit_name = prepare_final(&sb);
sb.commits.compare = compare_commits_by_commit_date;
sb.ent = NULL;
sb.path = path;
+ if (blame_move_score)
+ sb.move_score = blame_move_score;
+ if (blame_copy_score)
+ sb.copy_score = blame_copy_score;
+
+ sb.show_root = show_root;
+ sb.xdl_opts = xdl_opts;
+ sb.no_whole_file_rename = no_whole_file_rename;
+
read_mailmap(&mailmap, NULL);
assign_blame(&sb, opt);