01 /*
02 * Java GPX Library (jpx-3.1.0).
03 *
04 * Licensed under the Apache License, Version 2.0 (the "License");
05 * you may not use this file except in compliance with the License.
06 * You may obtain a copy of the License at
07 *
08 * http://www.apache.org/licenses/LICENSE-2.0
09 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package io.jenetics.jpx.format;
17
18 import static java.lang.Math.abs;
19
20 import java.text.ParsePosition;
21 import java.util.Optional;
22
23 import io.jenetics.jpx.Longitude;
24
25 /**
26 * This field allows to access the longitude degrees of a given location. If the
27 * pattern has a fractional part, the longitude is rounded to match the pattern.
28 * If the pattern has no fractional part, the longitude is truncated rather than
29 * rounded, on the assumption that the fractional part will be represented by
30 * minutes and seconds.
31 *
32 * @version 2.2
33 * @since 2.2
34 */
35 class LongitudeDegree extends Field {
36
37 LongitudeDegree(final String pattern) {
38 super(pattern, 'd');
39 }
40
41 @Override
42 public void parse(
43 final CharSequence in,
44 final ParsePosition pos,
45 final LocationBuilder builder
46 ) {
47 double d = parse(in, pos);
48 builder.addLongitude(d);
49 }
50
51 @Override
52 public Optional<String> format(final Location loc) {
53 return loc.longitude()
54 .map(Longitude::toDegrees)
55 .map(d -> isAbsolute() ? abs(d) : d)
56 .map(this::format);
57 }
58
59 @Override
60 public String toPattern() {
61 return isPrefixSign() ? "+" + super.toPattern() : super.toPattern();
62 }
63
64 }
|