| // Copyright 2017 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.devtools.build.android.dexer; |
| |
| import com.google.common.annotations.VisibleForTesting; |
| import java.util.Comparator; |
| import java.util.zip.ZipEntry; |
| |
| /** |
| * Comparator that orders {@link ZipEntry ZipEntries} {@link #LIKE_DX like Android's dx tool}. |
| */ |
| enum ZipEntryComparator implements Comparator<ZipEntry> { |
| /** |
| * Comparator to order more or less order alphabetically by file name. See |
| * {@link #compareClassNames} for the exact name comparison. |
| */ |
| LIKE_DX; |
| |
| @Override |
| // Copied from com.android.dx.cf.direct.ClassPathOpener |
| public int compare(ZipEntry a, ZipEntry b) { |
| return compareClassNames(a.getName(), b.getName()); |
| } |
| |
| /** |
| * Sorts java class names such that outer classes precede their inner classes and "package-info" |
| * precedes all other classes in its package. |
| * |
| * @param a {@code non-null;} first class name |
| * @param b {@code non-null;} second class name |
| * @return {@code compareTo()}-style result |
| */ |
| // Copied from com.android.dx.cf.direct.ClassPathOpener |
| @VisibleForTesting |
| static int compareClassNames(String a, String b) { |
| // Ensure inner classes sort second |
| a = a.replace('$', '0'); |
| b = b.replace('$', '0'); |
| |
| /* |
| * Assuming "package-info" only occurs at the end, ensures package-info |
| * sorts first. |
| */ |
| a = a.replace("package-info", ""); |
| b = b.replace("package-info", ""); |
| |
| return a.compareTo(b); |
| } |
| } |