| /* |
| * Copyright 2016 The Bazel Authors. All rights reserved. |
| * |
| * 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.google.idea.blaze.android.sync.importer.problems; |
| |
| import com.android.SdkConstants; |
| import com.android.ide.common.resources.configuration.FolderConfiguration; |
| import com.android.ide.common.resources.configuration.LocaleQualifier; |
| import com.android.ide.common.resources.configuration.ResourceQualifier; |
| import com.android.resources.ResourceFolderType; |
| import com.google.common.annotations.VisibleForTesting; |
| import com.google.common.collect.ImmutableSortedMap; |
| import com.google.common.util.concurrent.Futures; |
| import com.google.common.util.concurrent.ListenableFuture; |
| import com.google.common.util.concurrent.ListeningExecutorService; |
| import com.google.idea.blaze.base.ideinfo.ArtifactLocation; |
| import com.google.idea.blaze.base.io.FileAttributeProvider; |
| import com.google.idea.blaze.base.sync.workspace.ArtifactLocationDecoder; |
| import com.intellij.openapi.diagnostic.Logger; |
| import java.io.File; |
| import java.util.Arrays; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.concurrent.ExecutionException; |
| import java.util.stream.Collectors; |
| |
| /** |
| * Classifies generated resource directories as "interesting" or not. |
| * |
| * <p>Uninteresting resources: It is very common to have string translations as the only generated |
| * resources for a rule. If that's the case, we can ignore them since we likely already have a |
| * source variant of the same resource as a baseline for resolving references in Java or XML. |
| * |
| * <p>Other generated resources are interesting. |
| */ |
| class GeneratedResourceClassifier { |
| |
| private static final Logger logger = Logger.getInstance(GeneratedResourceClassifier.class); |
| |
| private final ImmutableSortedMap<ArtifactLocation, Integer> interestingDirectories; |
| |
| GeneratedResourceClassifier( |
| Collection<ArtifactLocation> generatedResourceLocations, |
| ArtifactLocationDecoder artifactLocationDecoder, |
| ListeningExecutorService executorService) { |
| FileAttributeProvider fileAttributeProvider = FileAttributeProvider.getInstance(); |
| List<ListenableFuture<GenResourceClassification>> jobs = |
| generatedResourceLocations |
| .stream() |
| .map( |
| location -> |
| executorService.submit( |
| () -> |
| classifyLocation( |
| location, artifactLocationDecoder, fileAttributeProvider))) |
| .collect(Collectors.toList()); |
| |
| ImmutableSortedMap.Builder<ArtifactLocation, Integer> interesting = |
| ImmutableSortedMap.naturalOrder(); |
| try { |
| for (GenResourceClassification classification : Futures.allAsList(jobs).get()) { |
| if (classification.isInteresting) { |
| interesting.put(classification.artifactLocation, classification.numSubDirs); |
| } |
| } |
| } catch (InterruptedException e) { |
| Thread.currentThread().interrupt(); |
| interesting = considerAllInteresting(generatedResourceLocations); |
| } catch (ExecutionException e) { |
| logger.error(e); |
| interesting = considerAllInteresting(generatedResourceLocations); |
| } finally { |
| interestingDirectories = interesting.build(); |
| } |
| } |
| |
| /** |
| * Returns a collection of interesting directories as a sorted map from directory to estimated |
| * size of subdirectory (to estimate cost of indexing). |
| * |
| * @return map of interesting directories and associated sizes |
| */ |
| public ImmutableSortedMap<ArtifactLocation, Integer> getInterestingDirectories() { |
| return interestingDirectories; |
| } |
| |
| private static ImmutableSortedMap.Builder<ArtifactLocation, Integer> considerAllInteresting( |
| Collection<ArtifactLocation> generatedResourceLocations) { |
| ImmutableSortedMap.Builder<ArtifactLocation, Integer> builder = |
| ImmutableSortedMap.naturalOrder(); |
| for (ArtifactLocation location : generatedResourceLocations) { |
| builder.put(location, -1); |
| } |
| return builder; |
| } |
| |
| private static class GenResourceClassification { |
| final boolean isInteresting; |
| final ArtifactLocation artifactLocation; |
| final int numSubDirs; |
| |
| GenResourceClassification( |
| boolean isInteresting, ArtifactLocation artifactLocation, int numSubDirs) { |
| this.isInteresting = isInteresting; |
| this.artifactLocation = artifactLocation; |
| this.numSubDirs = numSubDirs; |
| } |
| |
| static GenResourceClassification uninteresting( |
| ArtifactLocation artifactLocation, int numSubDirs) { |
| return new GenResourceClassification(false, artifactLocation, numSubDirs); |
| } |
| |
| static GenResourceClassification interesting( |
| ArtifactLocation artifactLocation, int numSubDirs) { |
| return new GenResourceClassification(true, artifactLocation, numSubDirs); |
| } |
| } |
| |
| private static GenResourceClassification classifyLocation( |
| ArtifactLocation artifactLocation, |
| ArtifactLocationDecoder artifactLocationDecoder, |
| FileAttributeProvider fileAttributeProvider) { |
| File resDirectory = artifactLocationDecoder.decode(artifactLocation); |
| File[] children = fileAttributeProvider.listFiles(resDirectory); |
| if (children == null) { |
| return GenResourceClassification.uninteresting(artifactLocation, 0); |
| } |
| if (mayHaveNonStringTranslations(children)) { |
| return GenResourceClassification.interesting(artifactLocation, children.length); |
| } else { |
| return GenResourceClassification.uninteresting(artifactLocation, children.length); |
| } |
| } |
| |
| @VisibleForTesting |
| static boolean mayHaveNonStringTranslations(File[] resDirectoryChildren) { |
| return Arrays.stream(resDirectoryChildren) |
| .anyMatch(child -> mayHaveNonStringTranslations(child.getName())); |
| } |
| |
| private static boolean mayHaveNonStringTranslations(String dirName) { |
| // String translations only sit in the values-xx-rYY directories, so we can rule out other |
| // directories quickly. |
| if (!dirName.contains(SdkConstants.RES_QUALIFIER_SEP)) { |
| return true; |
| } |
| if (ResourceFolderType.getFolderType(dirName) != ResourceFolderType.VALUES) { |
| return true; |
| } |
| FolderConfiguration config = FolderConfiguration.getConfigForFolder(dirName); |
| // Conservatively say it's interesting if there is an unrecognized configuration. |
| if (config == null) { |
| return true; |
| } |
| // If this is a translation mixed with something else, consider it a translation directory. |
| boolean hasTranslation = false; |
| for (ResourceQualifier qualifier : config.getQualifiers()) { |
| if (qualifier instanceof LocaleQualifier) { |
| hasTranslation = true; |
| } |
| } |
| return !hasTranslation; |
| } |
| } |