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/**
 * Copyright 2011 The Buzz Media, LLC
 * Copyright 2015-2019 Mickael Jeanroy
 *
 * 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.thebuzzmedia.exiftool.process.executor;

import com.thebuzzmedia.exiftool.process.OutputHandler;

import java.util.ArrayList;
import java.util.List;

import static java.util.Collections.addAll;
import static java.util.Collections.unmodifiableList;

/**
 * Composite handler.
 *
 * 

* * Run each internal handler and return false if one of them returns * false during line processing. * * This class should only be used internally (to compose handlers during * command execution). * *

* * Note: this class is thread safe if (and only if) * internal handlers are thread safe. */ class CompositeHandler implements OutputHandler { /** * List of internal handlers. * Each one will be processed in order. * Once created, this list is unmodifiable. */ private final List handlers; /** * Create handler. * * @param handlers List of handlers. */ CompositeHandler(OutputHandler... handlers) { List list = new ArrayList<>(handlers.length); if (handlers.length > 0) { addAll(list, handlers); } // Create immutable list. this.handlers = unmodifiableList(list); } @Override public boolean readLine(String line) { boolean hasNext = true; for (OutputHandler handler : handlers) { if (!handler.readLine(line)) { hasNext = false; } } return hasNext; } }





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