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-rw-r--r--diffcore-rename.c74
1 files changed, 46 insertions, 28 deletions
diff --git a/diffcore-rename.c b/diffcore-rename.c
index 4e132f1fdb..f7444c86bd 100644
--- a/diffcore-rename.c
+++ b/diffcore-rename.c
@@ -15,8 +15,7 @@ static struct diff_rename_dst {
} *rename_dst;
static int rename_dst_nr, rename_dst_alloc;
-static struct diff_rename_dst *locate_rename_dst(struct diff_filespec *two,
- int insert_ok)
+static int find_rename_dst(struct diff_filespec *two)
{
int first, last;
@@ -27,16 +26,33 @@ static struct diff_rename_dst *locate_rename_dst(struct diff_filespec *two,
struct diff_rename_dst *dst = &(rename_dst[next]);
int cmp = strcmp(two->path, dst->two->path);
if (!cmp)
- return dst;
+ return next;
if (cmp < 0) {
last = next;
continue;
}
first = next+1;
}
- /* not found */
- if (!insert_ok)
- return NULL;
+ return -first - 1;
+}
+
+static struct diff_rename_dst *locate_rename_dst(struct diff_filespec *two)
+{
+ int ofs = find_rename_dst(two);
+ return ofs < 0 ? NULL : &rename_dst[ofs];
+}
+
+/*
+ * Returns 0 on success, -1 if we found a duplicate.
+ */
+static int add_rename_dst(struct diff_filespec *two)
+{
+ int first = find_rename_dst(two);
+
+ if (first >= 0)
+ return -1;
+ first = -first - 1;
+
/* insert to make it at "first" */
ALLOC_GROW(rename_dst, rename_dst_nr + 1, rename_dst_alloc);
rename_dst_nr++;
@@ -44,9 +60,10 @@ static struct diff_rename_dst *locate_rename_dst(struct diff_filespec *two,
memmove(rename_dst + first + 1, rename_dst + first,
(rename_dst_nr - first - 1) * sizeof(*rename_dst));
rename_dst[first].two = alloc_filespec(two->path);
- fill_filespec(rename_dst[first].two, two->sha1, two->sha1_valid, two->mode);
+ fill_filespec(rename_dst[first].two, two->oid.hash, two->oid_valid,
+ two->mode);
rename_dst[first].pair = NULL;
- return &(rename_dst[first]);
+ return 0;
}
/* Table of rename/copy src files */
@@ -128,7 +145,6 @@ static int estimate_similarity(struct diff_filespec *src,
* call into this function in that case.
*/
unsigned long max_size, delta_size, base_size, src_copied, literal_added;
- unsigned long delta_limit;
int score;
/* We deal only with regular files. Symlink renames are handled
@@ -174,11 +190,8 @@ static int estimate_similarity(struct diff_filespec *src,
if (!dst->cnt_data && diff_populate_filespec(dst, 0))
return 0;
- delta_limit = (unsigned long)
- (base_size * (MAX_SCORE-minimum_score) / MAX_SCORE);
if (diffcore_count_changes(src, dst,
&src->cnt_data, &dst->cnt_data,
- delta_limit,
&src_copied, &literal_added))
return 0;
@@ -244,12 +257,13 @@ struct file_similarity {
static unsigned int hash_filespec(struct diff_filespec *filespec)
{
- if (!filespec->sha1_valid) {
+ if (!filespec->oid_valid) {
if (diff_populate_filespec(filespec, 0))
return 0;
- hash_sha1_file(filespec->data, filespec->size, "blob", filespec->sha1);
+ hash_sha1_file(filespec->data, filespec->size, "blob",
+ filespec->oid.hash);
}
- return sha1hash(filespec->sha1);
+ return sha1hash(filespec->oid.hash);
}
static int find_identical_files(struct hashmap *srcs,
@@ -271,7 +285,7 @@ static int find_identical_files(struct hashmap *srcs,
struct diff_filespec *source = p->filespec;
/* False hash collision? */
- if (hashcmp(source->sha1, target->sha1))
+ if (oidcmp(&source->oid, &target->oid))
continue;
/* Non-regular files? If so, the modes must match! */
if (!S_ISREG(source->mode) || !S_ISREG(target->mode)) {
@@ -324,9 +338,11 @@ static int find_exact_renames(struct diff_options *options)
int i, renames = 0;
struct hashmap file_table;
- /* Add all sources to the hash table */
+ /* Add all sources to the hash table in reverse order, because
+ * later on they will be retrieved in LIFO order.
+ */
hashmap_init(&file_table, NULL, rename_src_nr);
- for (i = 0; i < rename_src_nr; i++)
+ for (i = rename_src_nr-1; i >= 0; i--)
insert_file_table(&file_table, i, rename_src[i].p->one);
/* Walk the destinations and find best source match */
@@ -448,13 +464,17 @@ void diffcore_rename(struct diff_options *options)
strcmp(options->single_follow, p->two->path))
continue; /* not interested */
else if (!DIFF_OPT_TST(options, RENAME_EMPTY) &&
- is_empty_blob_sha1(p->two->sha1))
+ is_empty_blob_sha1(p->two->oid.hash))
continue;
- else
- locate_rename_dst(p->two, 1);
+ else if (add_rename_dst(p->two) < 0) {
+ warning("skipping rename detection, detected"
+ " duplicate destination '%s'",
+ p->two->path);
+ goto cleanup;
+ }
}
else if (!DIFF_OPT_TST(options, RENAME_EMPTY) &&
- is_empty_blob_sha1(p->one->sha1))
+ is_empty_blob_sha1(p->one->oid.hash))
continue;
else if (!DIFF_PAIR_UNMERGED(p) && !DIFF_FILE_VALID(p->two)) {
/*
@@ -517,7 +537,7 @@ void diffcore_rename(struct diff_options *options)
rename_dst_nr * rename_src_nr, 50, 1);
}
- mx = xcalloc(num_create * NUM_CANDIDATE_PER_DST, sizeof(*mx));
+ mx = xcalloc(st_mult(NUM_CANDIDATE_PER_DST, num_create), sizeof(*mx));
for (dst_cnt = i = 0; i < rename_dst_nr; i++) {
struct diff_filespec *two = rename_dst[i].two;
struct diff_score *m;
@@ -556,7 +576,7 @@ void diffcore_rename(struct diff_options *options)
stop_progress(&progress);
/* cost matrix sorted by most to least similar pair */
- qsort(mx, dst_cnt * NUM_CANDIDATE_PER_DST, sizeof(*mx), score_compare);
+ QSORT(mx, dst_cnt * NUM_CANDIDATE_PER_DST, score_compare);
rename_count += find_renames(mx, dst_cnt, minimum_score, 0);
if (detect_rename == DIFF_DETECT_COPY)
@@ -582,8 +602,7 @@ void diffcore_rename(struct diff_options *options)
* We would output this create record if it has
* not been turned into a rename/copy already.
*/
- struct diff_rename_dst *dst =
- locate_rename_dst(p->two, 0);
+ struct diff_rename_dst *dst = locate_rename_dst(p->two);
if (dst && dst->pair) {
diff_q(&outq, dst->pair);
pair_to_free = p;
@@ -613,8 +632,7 @@ void diffcore_rename(struct diff_options *options)
*/
if (DIFF_PAIR_BROKEN(p)) {
/* broken delete */
- struct diff_rename_dst *dst =
- locate_rename_dst(p->one, 0);
+ struct diff_rename_dst *dst = locate_rename_dst(p->one);
if (dst && dst->pair)
/* counterpart is now rename/copy */
pair_to_free = p;
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 06:46:30 +0000