return ret;
}
+static int tree_has_path(struct tree *tree, const char *path)
+{
+ unsigned char hashy[GIT_MAX_RAWSZ];
+ unsigned int mode_o;
+
+ return !get_tree_entry(tree->object.oid.hash, path,
+ hashy, &mode_o);
+}
+
static void get_renamed_dir_portion(const char *old_path, const char *new_path,
char **old_dir, char **new_dir)
{
}
}
+static void remove_hashmap_entries(struct hashmap *dir_renames,
+ struct string_list *items_to_remove)
+{
+ int i;
+ struct dir_rename_entry *entry;
+
+ for (i = 0; i < items_to_remove->nr; i++) {
+ entry = items_to_remove->items[i].util;
+ hashmap_remove(dir_renames, entry, NULL);
+ }
+ string_list_clear(items_to_remove, 0);
+}
+
+/*
+ * There are a couple things we want to do at the directory level:
+ * 1. Check for both sides renaming to the same thing, in order to avoid
+ * implicit renaming of files that should be left in place. (See
+ * testcase 6b in t6043 for details.)
+ * 2. Prune directory renames if there are still files left in the
+ * the original directory. These represent a partial directory rename,
+ * i.e. a rename where only some of the files within the directory
+ * were renamed elsewhere. (Technically, this could be done earlier
+ * in get_directory_renames(), except that would prevent us from
+ * doing the previous check and thus failing testcase 6b.)
+ * 3. Check for rename/rename(1to2) conflicts (at the directory level).
+ * In the future, we could potentially record this info as well and
+ * omit reporting rename/rename(1to2) conflicts for each path within
+ * the affected directories, thus cleaning up the merge output.
+ * NOTE: We do NOT check for rename/rename(2to1) conflicts at the
+ * directory level, because merging directories is fine. If it
+ * causes conflicts for files within those merged directories, then
+ * that should be detected at the individual path level.
+ */
+static void handle_directory_level_conflicts(struct merge_options *o,
+ struct hashmap *dir_re_head,
+ struct tree *head,
+ struct hashmap *dir_re_merge,
+ struct tree *merge)
+{
+ struct hashmap_iter iter;
+ struct dir_rename_entry *head_ent;
+ struct dir_rename_entry *merge_ent;
+
+ struct string_list remove_from_head = STRING_LIST_INIT_NODUP;
+ struct string_list remove_from_merge = STRING_LIST_INIT_NODUP;
+
+ hashmap_iter_init(dir_re_head, &iter);
+ while ((head_ent = hashmap_iter_next(&iter))) {
+ merge_ent = dir_rename_find_entry(dir_re_merge, head_ent->dir);
+ if (merge_ent &&
+ !head_ent->non_unique_new_dir &&
+ !merge_ent->non_unique_new_dir &&
+ !strbuf_cmp(&head_ent->new_dir, &merge_ent->new_dir)) {
+ /* 1. Renamed identically; remove it from both sides */
+ string_list_append(&remove_from_head,
+ head_ent->dir)->util = head_ent;
+ strbuf_release(&head_ent->new_dir);
+ string_list_append(&remove_from_merge,
+ merge_ent->dir)->util = merge_ent;
+ strbuf_release(&merge_ent->new_dir);
+ } else if (tree_has_path(head, head_ent->dir)) {
+ /* 2. This wasn't a directory rename after all */
+ string_list_append(&remove_from_head,
+ head_ent->dir)->util = head_ent;
+ strbuf_release(&head_ent->new_dir);
+ }
+ }
+
+ remove_hashmap_entries(dir_re_head, &remove_from_head);
+ remove_hashmap_entries(dir_re_merge, &remove_from_merge);
+
+ hashmap_iter_init(dir_re_merge, &iter);
+ while ((merge_ent = hashmap_iter_next(&iter))) {
+ head_ent = dir_rename_find_entry(dir_re_head, merge_ent->dir);
+ if (tree_has_path(merge, merge_ent->dir)) {
+ /* 2. This wasn't a directory rename after all */
+ string_list_append(&remove_from_merge,
+ merge_ent->dir)->util = merge_ent;
+ } else if (head_ent &&
+ !head_ent->non_unique_new_dir &&
+ !merge_ent->non_unique_new_dir) {
+ /* 3. rename/rename(1to2) */
+ /*
+ * We can assume it's not rename/rename(1to1) because
+ * that was case (1), already checked above. So we
+ * know that head_ent->new_dir and merge_ent->new_dir
+ * are different strings.
+ */
+ output(o, 1, _("CONFLICT (rename/rename): "
+ "Rename directory %s->%s in %s. "
+ "Rename directory %s->%s in %s"),
+ head_ent->dir, head_ent->new_dir.buf, o->branch1,
+ head_ent->dir, merge_ent->new_dir.buf, o->branch2);
+ string_list_append(&remove_from_head,
+ head_ent->dir)->util = head_ent;
+ strbuf_release(&head_ent->new_dir);
+ string_list_append(&remove_from_merge,
+ merge_ent->dir)->util = merge_ent;
+ strbuf_release(&merge_ent->new_dir);
+ }
+ }
+
+ remove_hashmap_entries(dir_re_head, &remove_from_head);
+ remove_hashmap_entries(dir_re_merge, &remove_from_merge);
+}
+
static struct hashmap *get_directory_renames(struct diff_queue_struct *pairs,
struct tree *tree)
{
dir_re_head = get_directory_renames(head_pairs, head);
dir_re_merge = get_directory_renames(merge_pairs, merge);
+ handle_directory_level_conflicts(o,
+ dir_re_head, head,
+ dir_re_merge, merge);
+
ri->head_renames = get_renames(o, head_pairs, head,
common, head, merge, entries);
ri->merge_renames = get_renames(o, merge_pairs, merge,