merge-ort: collect which directories are removed in dirs_removed

Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Elijah Newren committed Jan 7, 2021 at 21:35 UTC eb3e3e1ddffa1348532a6b8d741c235e4c73017c
1 file changed +27
merge-ort.c
+27
index 2e6d41b0a0..999a7c91c5 100644 --- a/merge-ort.c +++ b/merge-ort.c @@ -480,6 +480,27 @@ static void setup_path_info(struct merge_options *opt, result->util = mi; } +static void collect_rename_info(struct merge_options *opt, + struct name_entry *names, + const char *dirname, + const char *fullname, + unsigned filemask, + unsigned dirmask, + unsigned match_mask) +{ + struct rename_info *renames = &opt->priv->renames; + + /* Update dirs_removed, as needed */ + if (dirmask == 1 || dirmask == 3 || dirmask == 5) { + /* absent_mask = 0x07 - dirmask; sides = absent_mask/2 */ + unsigned sides = (0x07 - dirmask)/2; + if (sides & 1) + strset_add(&renames->dirs_removed[1], fullname); + if (sides & 2) + strset_add(&renames->dirs_removed[2], fullname); + } +} + static int collect_merge_info_callback(int n, unsigned long mask, unsigned long dirmask, @@ -580,6 +601,12 @@ static int collect_merge_info_callback(int n, return mask; } + /* + * Gather additional information used in rename detection. + */ + collect_rename_info(opt, names, dirname, fullpath, + filemask, dirmask, match_mask); + /* * Record information about the path so we can resolve later in * process_entries.