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Improve sorting a bit and fix some bugs in edge cases

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makes nheko appear at the top, if you search for it as well as TWIM match the twim room
This commit is contained in:
Nicolas Werner 2021-04-09 17:20:07 +02:00
parent 28074794e7
commit 7d6bd67615
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GPG key ID: C8D75E610773F2D9
2 changed files with 57 additions and 40 deletions
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3
src/CompletionProxyModel.cpp
View file

@ -28,12 +28,15 @@ CompletionProxyModel::CompletionProxyModel(QAbstractItemModel *model,
->data(sourceModel()->index(i, 0), CompletionModel::SearchRole)
.toString()
.toLower();
if (!string1.isEmpty())
trie_.insert(string1.toUcs4(), i);
auto string2 = sourceModel()
->data(sourceModel()->index(i, 0), CompletionModel::SearchRole2)
.toString()
.toLower();
if (!string2.isEmpty())
trie_.insert(string2.toUcs4(), i);
}
// insert the partial matches

62
src/CompletionProxyModel.h
View file

@ -59,7 +59,7 @@ struct trie
std::vector<Value> search(const QVector<Key> &keys, //< TODO(Nico): replace this with a span
size_t result_count_limit,
size_t max_edit_distance = 2) const
size_t max_edit_distance_ = 2) const
{
std::vector<Value> ret;
if (!result_count_limit)
@ -79,11 +79,14 @@ struct trie
}
};
if (auto e = this->next.find(keys[0]); e != this->next.end()) {
append(
e->second.search(keys.mid(1), result_count_limit, max_edit_distance));
}
auto limit = [&ret, result_count_limit] {
return std::min(result_count_limit, (result_count_limit - ret.size()) * 2);
};
// Try first exact matches, then with maximum errors
for (size_t max_edit_distance = 0;
max_edit_distance <= max_edit_distance_ && ret.size() < result_count_limit;
max_edit_distance += 1) {
if (max_edit_distance && ret.size() < result_count_limit) {
max_edit_distance -= 1;
@ -91,7 +94,8 @@ struct trie
if (keys.size() >= 2) {
auto t = this;
for (int i = 1; i >= 0; i--) {
if (auto e = t->next.find(keys[i]); e != t->next.end()) {
if (auto e = t->next.find(keys[i]);
e != t->next.end()) {
t = &e->second;
} else {
t = nullptr;
@ -100,31 +104,41 @@ struct trie
}
if (t) {
append(t->search(keys.mid(2),
(result_count_limit - ret.size()) * 2,
max_edit_distance));
append(t->search(
keys.mid(2), limit(), max_edit_distance));
}
}
// delete character case
append(this->search(
keys.mid(1), (result_count_limit - ret.size()) * 2, max_edit_distance));
// substitute and insert cases
// insert case
for (const auto &[k, t] : this->next) {
if (k == keys[0] || ret.size() >= result_count_limit)
break;
// substitute
append(t.search(
keys.mid(1), result_count_limit - ret.size(), max_edit_distance));
if (ret.size() >= result_count_limit)
if (k == keys[0])
continue;
if (ret.size() >= limit())
break;
// insert
append(t.search(
keys, result_count_limit - ret.size(), max_edit_distance));
append(t.search(keys, limit(), max_edit_distance));
}
// delete character case
append(this->search(keys.mid(1), limit(), max_edit_distance));
// substitute case
for (const auto &[k, t] : this->next) {
if (k == keys[0])
continue;
if (ret.size() >= limit())
break;
// substitute
append(t.search(keys.mid(1), limit(), max_edit_distance));
}
max_edit_distance += 1;
}
if (auto e = this->next.find(keys[0]); e != this->next.end()) {
append(e->second.search(keys.mid(1), limit(), max_edit_distance));
}
}