content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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.onegravity.rteditor.converter.tagsoup.util;
  
  import java.io.IOException;
  import java.io.Writer;
  
  /**
   * Executes a sequence of translators one after the other. Execution ends whenever
   * the first translator consumes codepoints from the input.
   *
   * @version $Id: AggregateTranslator.java 1436770 2013-01-22 07:09:45Z ggregory $
   * @since 3.0
   */
  public class AggregateTranslator extends CharSequenceTranslator {
  
      private final CharSequenceTranslator[] translators;
  
      /**
       * Specify the translators to be used at creation time.
       *
       * @param translators CharSequenceTranslator array to aggregate
       */
      public AggregateTranslator(final CharSequenceTranslator... translators) {
          this.translators = clone(translators);
      }
  
      public static <T> T[] clone(final T[] array) {
          if (array == null) {
              return null;
          }
          return array.clone();
      }
  
      /**
       * The first translator to consume codepoints from the input is the 'winner'.
       * Execution stops with the number of consumed codepoints being returned.
       * {@inheritDoc}
       */
      @Override
      public int translate(final CharSequence input, final int index, final Writer out) throws IOException {
          for (final CharSequenceTranslator translator : translators) {
              final int consumed = translator.translate(input, index, out);
              if (consumed != 0) {
                  return consumed;
              }
          }
          return 0;
      }
  
  }
  