| // Copyright 2015 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.ziputils; |
| |
| import com.google.common.base.Predicate; |
| import com.google.common.base.Predicates; |
| import com.google.common.collect.ImmutableSet; |
| import java.io.FileInputStream; |
| import java.io.IOException; |
| |
| /** |
| * Custom filters intended for {@link SplitZip#setInputFilter}. |
| */ |
| public class SplitZipFilters { |
| |
| /** |
| * Returns a predicate that returns true for filenames contained in the given zip file. |
| */ |
| public static Predicate<String> entriesIn(String filterZip) throws IOException { |
| // Aggregate filenames into a set so Predicates.in is efficient |
| ImmutableSet.Builder<String> filenames = ImmutableSet.builder(); |
| @SuppressWarnings("resource") // ZipIn takes ownership but isn't Closable |
| ZipIn zip = new ZipIn(new FileInputStream(filterZip).getChannel(), filterZip); |
| for (DirectoryEntry entry : zip.centralDirectory().list()) { |
| filenames.add(entry.getFilename()); |
| } |
| return Predicates.in(filenames.build()); |
| } |
| |
| private SplitZipFilters() { |
| } |
| } |