1   /* Contributed in the public domain.
2    * Licensed to CS GROUP (CS) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * CS licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *   http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.orekit.time;
18  
19  import java.io.IOException;
20  import java.io.InputStream;
21  import java.util.ArrayList;
22  import java.util.List;
23  
24  import org.orekit.data.DataLoader;
25  
26  /**
27   * A {@link DataLoader} based on a {@link UTCTAIOffsetsLoader.Parser} that loads a single
28   * file.
29   *
30   * @author Evan Ward
31   * @since 10.1
32   */
33  class UtcTaiOffsetLoader implements DataLoader {
34  
35      /** Leap second parser. */
36      private final UTCTAIOffsetsLoader.Parser parser;
37  
38      /** UTC-TAI offsets. */
39      private final List<OffsetModel> offsets;
40  
41      /**
42       * Create a data loader from a lep second parser.
43       *
44       * @param parser leap second parser.
45       */
46      UtcTaiOffsetLoader(final UTCTAIOffsetsLoader.Parser parser) {
47          this.parser = parser;
48          this.offsets = new ArrayList<>();
49      }
50  
51      /**
52       * Get the parsed offsets.
53       *
54       * @return parsed offsets
55       */
56      public List<OffsetModel> getOffsets() {
57          return offsets;
58      }
59  
60      @Override
61      public boolean stillAcceptsData() {
62          return offsets.isEmpty();
63      }
64  
65      @Override
66      public void loadData(final InputStream input, final String name)
67              throws IOException {
68          offsets.clear();
69          offsets.addAll(parser.parse(input, name));
70      }
71  
72  }