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/*
* Copyright (C) 2017 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.tools.appbundle.bundle2installable;
import static com.android.tools.appbundle.bundle2installable.util.PathUtils.getFilePathWithoutTopLevel;
import static com.android.tools.appbundle.bundle2installable.util.PathUtils.getFilePathWithoutVariant;
import com.android.tools.appbundle.bundle2installable.util.Pair;
import com.android.tools.appbundle.bundle2installable.util.PathUtils;
import com.android.tools.appbundle.bundle2installable.util.ZipWalker;
import java.io.IOException;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
/**
* Assets directory variant processor.
*
* Currently, scans the directory in the assets directory of the module zip. Every directory name
* is considered a variant name, and the final split will contain files from the variant directory
* with that directory elided: all goes directly in the assets directory. Each variant will include
* files that are directly in the assets root directory.
*/
public class AssetsProcessor implements ZipWalker.ZipEntryListener, VariantProcessor {
private static final String ASSETS_DIR = "assets";
private Map<String, List<ZipEntry>> variantAssetsMap;
private List<ZipEntry> nonVariantAssets;
public AssetsProcessor() {
this.variantAssetsMap = new HashMap<>();
this.nonVariantAssets = new ArrayList<>();
}
public void notify(ZipFile bundle, ZipEntry entry) throws IOException {
// TODO(b/64285122): fix the asset variants detection when there is only non-variant data.
Path p = Paths.get(entry.getName());
if (PathUtils.isInsideTopDirectory(p, ASSETS_DIR)) {
String variant = PathUtils.resolveVariant(p);
if (variant != null) { // inside the variant directory
if (!variantAssetsMap.containsKey(variant)) {
variantAssetsMap.put(variant, new ArrayList<>());
}
variantAssetsMap.get(variant).add(entry);
} else { // inside the assets directory
System.out.println("Entry name: " + entry.getName());
if (!entry.isDirectory()) {
System.out.println("..is not a directory");
nonVariantAssets.add(entry);
}
}
}
}
public List<Pair<ZipEntry, String>> generateForVariant(String variant) {
List<Pair<ZipEntry, String>> res = new ArrayList<>();
Set<String> coveredFiles = new HashSet<>();
if (!variantAssetsMap.containsKey(variant)) {
System.out.println(
String.format("Warning! The '%s' variant has no dedicated assets.",
variant));
} else {
for (ZipEntry entry : variantAssetsMap.get(variant)) {
String pathWithoutVariant = getFilePathWithoutVariant(entry.getName());
coveredFiles.add(pathWithoutVariant);
res.add(Pair.of(entry, Paths.get(ASSETS_DIR, pathWithoutVariant).toString()));
}
}
for (ZipEntry entry : nonVariantAssets) {
String pathWithoutVariant = getFilePathWithoutTopLevel(entry.getName());
if (!coveredFiles.contains(pathWithoutVariant)) {
res.add(Pair.of(entry, Paths.get(ASSETS_DIR, pathWithoutVariant).toString()));
}
}
return res;
}
public List<String> getAllVariants() {
return new ArrayList<>(variantAssetsMap.keySet());
}
}
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