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Adopt dir_iter_t in descend_unique_hierarchy

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Migrate this function from wreaddir_resolving to dir_iter_t
This commit is contained in:
ridiculousfish 2022-09-25 15:34:12 -07:00
parent 2a9366f938
commit 749d71288d
1 changed files with 17 additions and 20 deletions
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37
src/wildcard.cpp
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@ -586,42 +586,39 @@ class wildcard_expander_t {
wcstring unique_hierarchy;
wcstring abs_unique_hierarchy = start_point;
bool stop_descent = false;
DIR *dir;
while (!stop_descent && (dir = wopendir(abs_unique_hierarchy))) {
for (;;) {
// We keep track of the single unique_entry entry. If we get more than one, it's not
// unique and we stop the descent.
wcstring unique_entry;
bool child_is_dir;
wcstring child_entry;
while (wreaddir_resolving(dir, abs_unique_hierarchy, child_entry, &child_is_dir)) {
if (child_entry.empty() || child_entry.at(0) == L'.') {
dir_iter_t dir(abs_unique_hierarchy);
if (!dir.valid()) {
break;
}
while (const auto *entry = dir.next()) {
if (entry->name.empty() || entry->name.at(0) == L'.') {
continue; // either hidden, or . and .. entries -- skip them
} else if (child_is_dir && unique_entry.empty()) {
unique_entry = child_entry; // first candidate
}
if (entry->is_dir() && unique_entry.empty()) {
unique_entry = entry->name; // first candidate
} else {
// We either have two or more candidates, or the child is not a directory. We're
// done.
stop_descent = true;
unique_entry.clear();
break;
}
}
// We stop if we got two or more entries; also stop if we got zero or were interrupted
if (unique_entry.empty() || interrupted_or_overflowed()) {
stop_descent = true;
break;
}
if (!stop_descent) {
// We have an entry in the unique hierarchy!
append_path_component(unique_hierarchy, unique_entry);
unique_hierarchy.push_back(L'/');
// We have an entry in the unique hierarchy!
append_path_component(unique_hierarchy, unique_entry);
unique_hierarchy.push_back(L'/');
append_path_component(abs_unique_hierarchy, unique_entry);
abs_unique_hierarchy.push_back(L'/');
}
closedir(dir);
append_path_component(abs_unique_hierarchy, unique_entry);
abs_unique_hierarchy.push_back(L'/');
}
return unique_hierarchy;
}