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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>
pull/1029/head
Elijah Newren 1 year ago committed by Junio C Hamano
parent
commit
906fc557b7
  1. 4
      builtin/clean.c
  2. 4
      builtin/worktree.c
  3. 5
      diff-no-index.c
  4. 25
      dir.c
  5. 2
      dir.h
  6. 5
      entry.c
  7. 5
      notes-merge.c
  8. 4
      object-file.c
  9. 5
      packfile.c
  10. 4
      rerere.c
  11. 12
      worktree.c

4
builtin/clean.c

@ -189,10 +189,8 @@ static int remove_dirs(struct strbuf *path, const char *prefix, int force_flag,
strbuf_complete(path, '/');
len = path->len;
while ((e = readdir(dir)) != NULL) {
while ((e = readdir_skip_dot_and_dotdot(dir)) != NULL) {
struct stat st;
if (is_dot_or_dotdot(e->d_name))
continue;
strbuf_setlen(path, len);
strbuf_addstr(path, e->d_name);

4
builtin/worktree.c

@ -118,10 +118,8 @@ static void prune_worktrees(void)
struct dirent *d;
if (!dir)
return;
while ((d = readdir(dir)) != NULL) {
while ((d = readdir_skip_dot_and_dotdot(dir)) != NULL) {
char *path;
if (is_dot_or_dotdot(d->d_name))
continue;
strbuf_reset(&reason);
if (should_prune_worktree(d->d_name, &reason, &path, expire))
prune_worktree(d->d_name, reason.buf);

5
diff-no-index.c

@ -26,9 +26,8 @@ static int read_directory_contents(const char *path, struct string_list *list)
if (!(dir = opendir(path)))
return error("Could not open directory %s", path);
while ((e = readdir(dir)))
if (!is_dot_or_dotdot(e->d_name))
string_list_insert(list, e->d_name);
while ((e = readdir_skip_dot_and_dotdot(dir)))
string_list_insert(list, e->d_name);
closedir(dir);
return 0;

25
dir.c

@ -59,6 +59,17 @@ void dir_init(struct dir_struct *dir)
memset(dir, 0, sizeof(*dir));
}
struct dirent *readdir_skip_dot_and_dotdot(DIR *dirp)
{
struct dirent *e;
while ((e = readdir(dirp)) != NULL) {
if (!is_dot_or_dotdot(e->d_name))
break;
}
return e;
}
int count_slashes(const char *s)
{
int cnt = 0;
@ -2332,7 +2343,7 @@ static int read_cached_dir(struct cached_dir *cdir)
struct dirent *de;
if (cdir->fdir) {
de = readdir(cdir->fdir);
de = readdir_skip_dot_and_dotdot(cdir->fdir);
if (!de) {
cdir->d_name = NULL;
cdir->d_type = DT_UNKNOWN;
@ -2931,11 +2942,9 @@ int is_empty_dir(const char *path)
if (!dir)
return 0;
while ((e = readdir(dir)) != NULL)
if (!is_dot_or_dotdot(e->d_name)) {
ret = 0;
break;
}
e = readdir_skip_dot_and_dotdot(dir);
if (e)
ret = 0;
closedir(dir);
return ret;
@ -2975,10 +2984,8 @@ static int remove_dir_recurse(struct strbuf *path, int flag, int *kept_up)
strbuf_complete(path, '/');
len = path->len;
while ((e = readdir(dir)) != NULL) {
while ((e = readdir_skip_dot_and_dotdot(dir)) != NULL) {
struct stat st;
if (is_dot_or_dotdot(e->d_name))
continue;
strbuf_setlen(path, len);
strbuf_addstr(path, e->d_name);

2
dir.h

@ -342,6 +342,8 @@ struct dir_struct {
unsigned visited_directories;
};
struct dirent *readdir_skip_dot_and_dotdot(DIR *dirp);
/*Count the number of slashes for string s*/
int count_slashes(const char *s);

5
entry.c

@ -56,12 +56,9 @@ static void remove_subtree(struct strbuf *path)
if (!dir)
die_errno("cannot opendir '%s'", path->buf);
while ((de = readdir(dir)) != NULL) {
while ((de = readdir_skip_dot_and_dotdot(dir)) != NULL) {
struct stat st;
if (is_dot_or_dotdot(de->d_name))
continue;
strbuf_addch(path, '/');
strbuf_addstr(path, de->d_name);
if (lstat(path->buf, &st))

5
notes-merge.c

@ -695,13 +695,10 @@ int notes_merge_commit(struct notes_merge_options *o,
strbuf_addch(&path, '/');
baselen = path.len;
while ((e = readdir(dir)) != NULL) {
while ((e = readdir_skip_dot_and_dotdot(dir)) != NULL) {
struct stat st;
struct object_id obj_oid, blob_oid;
if (is_dot_or_dotdot(e->d_name))
continue;
if (get_oid_hex(e->d_name, &obj_oid)) {
if (o->verbosity >= 3)
printf("Skipping non-SHA1 entry '%s%s'\n",

4
object-file.c

@ -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);

5
packfile.c

@ -813,10 +813,7 @@ void for_each_file_in_pack_dir(const char *objdir,
}
strbuf_addch(&path, '/');
dirnamelen = path.len;
while ((de = readdir(dir)) != NULL) {
if (is_dot_or_dotdot(de->d_name))
continue;
while ((de = readdir_skip_dot_and_dotdot(dir)) != NULL) {
strbuf_setlen(&path, dirnamelen);
strbuf_addstr(&path, de->d_name);

4
rerere.c

@ -1190,13 +1190,11 @@ void rerere_gc(struct repository *r, struct string_list *rr)
if (!dir)
die_errno(_("unable to open rr-cache directory"));
/* Collect stale conflict IDs ... */
while ((e = readdir(dir))) {
while ((e = readdir_skip_dot_and_dotdot(dir))) {
struct rerere_dir *rr_dir;
struct rerere_id id;
int now_empty;
if (is_dot_or_dotdot(e->d_name))
continue;
if (!is_rr_cache_dirname(e->d_name))
continue; /* or should we remove e->d_name? */

12
worktree.c

@ -128,10 +128,8 @@ struct worktree **get_worktrees(void)
dir = opendir(path.buf);
strbuf_release(&path);
if (dir) {
while ((d = readdir(dir)) != NULL) {
while ((d = readdir_skip_dot_and_dotdot(dir)) != NULL) {
struct worktree *linked = NULL;
if (is_dot_or_dotdot(d->d_name))
continue;
if ((linked = get_linked_worktree(d->d_name))) {
ALLOC_GROW(list, counter + 1, alloc);
@ -486,13 +484,9 @@ int submodule_uses_worktrees(const char *path)
if (!dir)
return 0;
while ((d = readdir(dir)) != NULL) {
if (is_dot_or_dotdot(d->d_name))
continue;
d = readdir_skip_dot_and_dotdot(dir);
if (d != NULL)
ret = 1;
break;
}
closedir(dir);
return ret;
}

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