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.frames;
18  
19  import java.io.IOException;
20  import java.io.InputStream;
21  import java.text.ParseException;
22  import java.util.ArrayList;
23  import java.util.Collection;
24  import java.util.List;
25  
26  import org.orekit.data.DataLoader;
27  
28  /**
29   * Implementation of {@link DataLoader} based on {@link EopHistoryLoader.Parser} that
30   * loads all files and compiles the results into one data structure.
31   *
32   * @author Evan Ward
33   * @since 10.1
34   */
35  class EopParserLoader implements DataLoader {
36  
37      /** Parser for EOP data files. */
38      private final EopHistoryLoader.Parser parser;
39  
40      /** History entries. */
41      private final List<EOPEntry> history;
42  
43      /**
44       * Create a {@link DataLoader} based on a {@link EopHistoryLoader.Parser}. Loads
45       * all EOP data into a single collection.
46       *
47       * @param parser for the EOP data files.
48       */
49      EopParserLoader(final EopHistoryLoader.Parser parser) {
50          this.parser = parser;
51          this.history = new ArrayList<>();
52      }
53  
54      /**
55       * Get the parsed EOP entries.
56       *
57       * @return the parsed EOP data. The returned collection is a reference, not a
58       * copy. It is not guaranteed to be sorted.
59       */
60      public Collection<EOPEntry> getEop() {
61          return history;
62      }
63  
64      /** {@inheritDoc} */
65      public boolean stillAcceptsData() {
66          return true;
67      }
68  
69      @Override
70      public void loadData(final InputStream input, final String name)
71              throws IOException, ParseException {
72          history.addAll(parser.parse(input, name));
73      }
74  
75  }