1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.tools.build.apkzlib.zip; 18 19 import com.google.common.collect.ImmutableList; 20 import java.util.ArrayList; 21 import java.util.List; 22 import javax.annotation.Nonnull; 23 24 /** 25 * Factory for verification logs. 26 */ 27 final class VerifyLogs { 28 VerifyLogs()29 private VerifyLogs() {} 30 31 /** 32 * Creates a {@link VerifyLog} that ignores all messages logged. 33 * 34 * @return the log 35 */ 36 @Nonnull devNull()37 static VerifyLog devNull() { 38 return new VerifyLog() { 39 @Override 40 public void log(@Nonnull String message) {} 41 42 @Nonnull 43 @Override 44 public ImmutableList<String> getLogs() { 45 return ImmutableList.of(); 46 } 47 }; 48 } 49 50 /** 51 * Creates a {@link VerifyLog} that stores all log messages. 52 * 53 * @return the log 54 */ 55 @Nonnull 56 static VerifyLog unlimited() { 57 return new VerifyLog() { 58 59 /** 60 * All saved messages. 61 */ 62 @Nonnull 63 private final List<String> messages = new ArrayList<>(); 64 65 @Override 66 public void log(@Nonnull String message) { 67 messages.add(message); 68 } 69 70 @Nonnull 71 @Override 72 public ImmutableList<String> getLogs() { 73 return ImmutableList.copyOf(messages); 74 } 75 }; 76 } 77 } 78