/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.ide.common.build;
import com.android.annotations.NonNull;
import com.android.annotations.Nullable;
import com.android.build.SplitOutput;
import com.android.resources.Density;
import com.google.common.collect.Lists;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
/**
* Helper class to help with installation of multi-output variants.
*/
public class SplitOutputMatcher {
/**
* Returns which output to use based on given densities and abis.
*
* This uses the same logic as the store, using two passes:
* First, find all the compatible outputs.
* Then take the one with the highest versionCode.
*
* @param outputs the outputs to choose from
* @param density the density
* @param abis a list of ABIs.
* @return the output to use or null if none are compatible.
*/
@Nullable
public static SplitOutput computeBestOutput(
@NonNull List<? extends SplitOutput> outputs,
int density,
@NonNull List<String> abis) {
Density densityEnum = Density.getEnum(density);
String densityValue;
if (densityEnum == null) {
densityValue = null;
} else {
densityValue = densityEnum.getResourceValue();
}
// gather all compatible matches.
List<SplitOutput> matches = Lists.newArrayListWithExpectedSize(outputs.size());
// find a matching output.
for (SplitOutput output : outputs) {
String densityFilter = output.getDensityFilter();
String abiFilter = output.getAbiFilter();
if (densityFilter != null && !densityFilter.equals(densityValue)) {
continue;
}
if (abiFilter != null && !abis.contains(abiFilter)) {
continue;
}
matches.add(output);
}
if (matches.isEmpty()) {
return null;
}
return Collections.max(matches, new Comparator<SplitOutput>() {
@Override
public int compare(SplitOutput splitOutput, SplitOutput splitOutput2) {
return splitOutput.getVersionCode() - splitOutput2.getVersionCode();
}
});
}
}