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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.apkzlib.zip;
import com.google.common.collect.ImmutableList;
import java.util.ArrayList;
import java.util.List;
import javax.annotation.Nonnull;
/**
* Factory for verification logs.
*/
final class VerifyLogs {
private VerifyLogs() {}
/**
* Creates a {@link VerifyLog} that ignores all messages logged.
*
* @return the log
*/
@Nonnull
static VerifyLog devNull() {
return new VerifyLog() {
@Override
public void log(@Nonnull String message) {}
@Nonnull
@Override
public ImmutableList<String> getLogs() {
return ImmutableList.of();
}
};
}
/**
* Creates a {@link VerifyLog} that stores all log messages.
*
* @return the log
*/
@Nonnull
static VerifyLog unlimited() {
return new VerifyLog() {
/**
* All saved messages.
*/
@Nonnull
private final List<String> messages = new ArrayList<>();
@Override
public void log(@Nonnull String message) {
messages.add(message);
}
@Nonnull
@Override
public ImmutableList<String> getLogs() {
return ImmutableList.copyOf(messages);
}
};
}
}
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