1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.maven.scm.util;
20
21 import java.text.DateFormat;
22 import java.text.ParseException;
23 import java.text.SimpleDateFormat;
24 import java.util.Date;
25 import java.util.Locale;
26
27 import org.codehaus.plexus.util.cli.StreamConsumer;
28 import org.slf4j.Logger;
29 import org.slf4j.LoggerFactory;
30
31 /**
32 * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
33 */
34 public abstract class AbstractConsumer implements StreamConsumer {
35 protected final Logger logger = LoggerFactory.getLogger(getClass());
36
37 /**
38 * Converts the date timestamp from the output into a date object.
39 *
40 * @param date TODO
41 * @param userPattern TODO
42 * @param defaultPattern TODO
43 * @return a date representing the timestamp of the log entry
44 */
45 protected Date parseDate(String date, String userPattern, String defaultPattern) {
46 return parseDate(date, userPattern, defaultPattern, null);
47 }
48
49 /**
50 * Converts the date timestamp from the output into a date object.
51 *
52 * @param date TODO
53 * @param userPattern TODO
54 * @param defaultPattern TODO
55 * @param locale TODO
56 * @return a date representing the timestamp of the log entry
57 */
58 protected Date parseDate(String date, String userPattern, String defaultPattern, Locale locale) {
59 DateFormat format;
60
61 String patternUsed = null;
62 Locale localeUsed = null;
63
64 if (userPattern != null && !userPattern.isEmpty()) {
65 if (locale != null) {
66 format = new SimpleDateFormat(userPattern, locale);
67 localeUsed = locale;
68 } else {
69 format = new SimpleDateFormat(userPattern);
70 localeUsed = Locale.getDefault();
71 }
72 patternUsed = userPattern;
73 } else {
74 if (defaultPattern != null && !defaultPattern.isEmpty()) {
75 if (locale != null) {
76 format = new SimpleDateFormat(defaultPattern, locale);
77 localeUsed = locale;
78 } else {
79 format = new SimpleDateFormat(defaultPattern);
80 localeUsed = Locale.getDefault();
81 }
82 patternUsed = defaultPattern;
83 } else {
84 // Use the English short date pattern if no pattern is specified
85 format = DateFormat.getDateInstance(DateFormat.SHORT, Locale.ENGLISH);
86 patternUsed = "DateFormat.SHORT";
87 localeUsed = Locale.ENGLISH;
88 }
89 }
90
91 try {
92 return format.parse(date);
93 } catch (ParseException e) {
94 if (logger.isWarnEnabled()) {
95 logger.warn(
96 "skip ParseException: " + e.getMessage() + " during parsing date '" + date
97 + "' with pattern '" + patternUsed + "' and locale '"
98 + localeUsed + "'",
99 e);
100 }
101
102 return null;
103 }
104 }
105 }