01 /*
02 * SPDX-License-Identifier: Apache-2.0
03 *
04 * Copyright 2008-2017 the original author or authors.
05 *
06 * Licensed under the Apache License, Version 2.0 (the "License");
07 * you may not use this file except in compliance with the License.
08 * You may obtain a copy of the License at
09 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18 package griffon.core.formatters;
19
20 import javax.annotation.Nullable;
21 import java.math.BigDecimal;
22 import java.math.BigInteger;
23 import java.text.DecimalFormat;
24 import java.text.NumberFormat;
25
26 import static griffon.util.GriffonNameUtils.isBlank;
27
28 /**
29 * @author Andres Almiray
30 * @since 2.0.0
31 */
32 public class BigIntegerFormatter extends AbstractFormatter<BigInteger> {
33 public static final String PATTERN_CURRENCY = "currency";
34 public static final String PATTERN_PERCENT = "percent";
35
36 private final NumberFormat numberFormat;
37
38 public BigIntegerFormatter() {
39 this(null);
40 }
41
42 public BigIntegerFormatter(@Nullable String pattern) {
43 if (isBlank(pattern)) {
44 numberFormat = NumberFormat.getIntegerInstance();
45 } else if (PATTERN_CURRENCY.equalsIgnoreCase(pattern)) {
46 numberFormat = NumberFormat.getCurrencyInstance();
47 } else if (PATTERN_PERCENT.equalsIgnoreCase(pattern)) {
48 numberFormat = NumberFormat.getPercentInstance();
49 } else {
50 numberFormat = new DecimalFormat(pattern);
51 numberFormat.setParseIntegerOnly(true);
52 ((DecimalFormat) numberFormat).setParseBigDecimal(true);
53 }
54 }
55
56 @Nullable
57 @Override
58 public String format(@Nullable BigInteger number) {
59 return number == null ? null : numberFormat.format(number);
60 }
61
62 @Nullable
63 @Override
64 public BigInteger parse(@Nullable String str) throws ParseException {
65 if (isBlank(str)) return null;
66 try {
67 Number number = numberFormat.parse(str);
68 if (number instanceof BigDecimal) {
69 return ((BigDecimal) number).toBigInteger();
70 }
71 return BigInteger.valueOf(number.longValue());
72 } catch (java.text.ParseException e) {
73 throw new ParseException(e);
74 }
75 }
76 }
|