| /* |
| * Copyright (C) 2018 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 android.content.pm; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| import com.android.internal.util.ArrayUtils; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * Base for classes that update a {@link PackageParser.Package}'s shared libraries. |
| * |
| * @hide |
| */ |
| @VisibleForTesting |
| public abstract class PackageSharedLibraryUpdater { |
| |
| /** |
| * Update the package's shared libraries. |
| * |
| * @param pkg the package to update. |
| */ |
| public abstract void updatePackage(PackageParser.Package pkg); |
| |
| static void removeLibrary(PackageParser.Package pkg, String libraryName) { |
| pkg.usesLibraries = ArrayUtils.remove(pkg.usesLibraries, libraryName); |
| pkg.usesOptionalLibraries = |
| ArrayUtils.remove(pkg.usesOptionalLibraries, libraryName); |
| } |
| |
| static @NonNull |
| <T> ArrayList<T> prefix(@Nullable ArrayList<T> cur, T val) { |
| if (cur == null) { |
| cur = new ArrayList<>(); |
| } |
| cur.add(0, val); |
| return cur; |
| } |
| |
| private static boolean isLibraryPresent(ArrayList<String> usesLibraries, |
| ArrayList<String> usesOptionalLibraries, String apacheHttpLegacy) { |
| return ArrayUtils.contains(usesLibraries, apacheHttpLegacy) |
| || ArrayUtils.contains(usesOptionalLibraries, apacheHttpLegacy); |
| } |
| |
| /** |
| * Add an implicit dependency. |
| * |
| * <p>If the package has an existing dependency on {@code existingLibrary} then prefix it with |
| * the {@code implicitDependency} if it is not already in the list of libraries. |
| * |
| * @param pkg the {@link PackageParser.Package} to update. |
| * @param existingLibrary the existing library. |
| * @param implicitDependency the implicit dependency to add |
| */ |
| void prefixImplicitDependency(PackageParser.Package pkg, String existingLibrary, |
| String implicitDependency) { |
| ArrayList<String> usesLibraries = pkg.usesLibraries; |
| ArrayList<String> usesOptionalLibraries = pkg.usesOptionalLibraries; |
| |
| if (!isLibraryPresent(usesLibraries, usesOptionalLibraries, implicitDependency)) { |
| if (ArrayUtils.contains(usesLibraries, existingLibrary)) { |
| prefix(usesLibraries, implicitDependency); |
| } else if (ArrayUtils.contains(usesOptionalLibraries, existingLibrary)) { |
| prefix(usesOptionalLibraries, implicitDependency); |
| } |
| |
| pkg.usesLibraries = usesLibraries; |
| pkg.usesOptionalLibraries = usesOptionalLibraries; |
| } |
| } |
| |
| void prefixRequiredLibrary(PackageParser.Package pkg, String libraryName) { |
| ArrayList<String> usesLibraries = pkg.usesLibraries; |
| ArrayList<String> usesOptionalLibraries = pkg.usesOptionalLibraries; |
| |
| boolean alreadyPresent = isLibraryPresent( |
| usesLibraries, usesOptionalLibraries, libraryName); |
| if (!alreadyPresent) { |
| usesLibraries = prefix(usesLibraries, libraryName); |
| |
| pkg.usesLibraries = usesLibraries; |
| } |
| } |
| } |