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/*
* This file is part of spark.
*
* Copyright (c) lucko (Luck) <luck@lucko.me>
* Copyright (c) contributors
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package me.lucko.spark.common.command.tabcomplete;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import java.util.function.Predicate;
import java.util.stream.Collectors;
public interface CompletionSupplier {
CompletionSupplier EMPTY = partial -> Collections.emptyList();
static CompletionSupplier startsWith(Collection<String> strings) {
if (strings.isEmpty()) {
return EMPTY;
}
return partial -> strings.stream().filter(startsWithIgnoreCasePredicate(partial)).collect(Collectors.toList());
}
static Predicate<String> startsWithIgnoreCasePredicate(String prefix) {
return string -> {
if (string.length() < prefix.length()) {
return false;
}
return string.regionMatches(true, 0, prefix, 0, prefix.length());
};
}
List<String> supplyCompletions(String partial);
}
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