dir: introduce readdir_skip_dot_and_dotdot() helper

Many places in the code were doing
    while ((d = readdir(dir)) != NULL) {
        if (is_dot_or_dotdot(d->d_name))
            continue;
        ...process d...
    }
Introduce a readdir_skip_dot_and_dotdot() helper to make that a one-liner:
    while ((d = readdir_skip_dot_and_dotdot(dir)) != NULL) {
        ...process d...
    }

This helper particularly simplifies checks for empty directories.

Also use this helper in read_cached_dir() so that our statistics are
consistent across platforms.  (In other words, read_cached_dir() should
have been using is_dot_or_dotdot() and skipping such entries, but did
not and left it to treat_path() to detect and mark such entries as
path_none.)

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Elijah Newren
2021-05-12 17:28:22 +00:00
committed by Junio C Hamano
parent 4e689d8171
commit b548f0f156
11 changed files with 31 additions and 45 deletions

View File

@ -2304,10 +2304,8 @@ int for_each_file_in_obj_subdir(unsigned int subdir_nr,
strbuf_addch(path, '/');
baselen = path->len;
while ((de = readdir(dir))) {
while ((de = readdir_skip_dot_and_dotdot(dir))) {
size_t namelen;
if (is_dot_or_dotdot(de->d_name))
continue;
namelen = strlen(de->d_name);
strbuf_setlen(path, baselen);