01 /*
02 * Java GPX Library (jpx-3.1.0).
03 * Copyright (c) 2016-2023 Franz Wilhelmstötter
04 *
05 * Licensed under the Apache License, Version 2.0 (the "License");
06 * you may not use this file except in compliance with the License.
07 * You may obtain a copy of the License at
08 *
09 * 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 * Author:
18 * Franz Wilhelmstötter (franz.wilhelmstoetter@gmail.com)
19 */
20 package io.jenetics.jpx.format;
21
22 import java.text.ParsePosition;
23 import java.util.Optional;
24
25 import io.jenetics.jpx.Longitude;
26
27 /**
28 * @author <a href="mailto:franz.wilhelmstoetter@gmail.com">Franz Wilhelmstötter</a>
29 * @version 2.2
30 * @since 1.4
31 */
32 enum LongitudeEW implements Format {
33
34 INSTANCE;
35
36 @Override
37 public Optional<String> format(final Location value) {
38 return value.longitude()
39 .map(Longitude::toDegrees)
40 .map(v -> Double.compare(v, 0.0) >= 0 ? "E" : "W");
41 }
42
43 @Override
44 public void parse(
45 final CharSequence in,
46 final ParsePosition pos,
47 final LocationBuilder builder
48 ) {
49 final int i = pos.getIndex();
50 switch (in.charAt(i)) {
51 case 'E' -> {
52 pos.setIndex(i + 1);
53 builder.setLongitudeSign(+1);
54 }
55 case 'W' -> {
56 pos.setIndex(i + 1);
57 builder.setLongitudeSign(-1);
58 }
59 default -> {
60 pos.setErrorIndex(i);
61 throw new ParseException("Not found E/W", in, i);
62 }
63 }
64 }
65
66 @Override
67 public String toPattern() {
68 return "x";
69 }
70
71 }
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