001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019package org.apache.maven.scm.util; 020 021import java.text.DateFormat; 022import java.text.ParseException; 023import java.text.SimpleDateFormat; 024import java.util.Date; 025import java.util.Locale; 026 027import org.codehaus.plexus.util.StringUtils; 028import org.codehaus.plexus.util.cli.StreamConsumer; 029import org.slf4j.Logger; 030import org.slf4j.LoggerFactory; 031 032/** 033 * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a> 034 * 035 */ 036public abstract class AbstractConsumer implements StreamConsumer { 037 protected final Logger logger = LoggerFactory.getLogger(getClass()); 038 039 /** 040 * Converts the date timestamp from the output into a date object. 041 * 042 * @param date TODO 043 * @param userPattern TODO 044 * @param defaultPattern TODO 045 * @return A date representing the timestamp of the log entry. 046 */ 047 protected Date parseDate(String date, String userPattern, String defaultPattern) { 048 return parseDate(date, userPattern, defaultPattern, null); 049 } 050 051 /** 052 * Converts the date timestamp from the output into a date object. 053 * 054 * @param date TODO 055 * @param userPattern TODO 056 * @param defaultPattern TODO 057 * @param locale TODO 058 * @return A date representing the timestamp of the log entry. 059 */ 060 protected Date parseDate(String date, String userPattern, String defaultPattern, Locale locale) { 061 DateFormat format; 062 063 String patternUsed = null; 064 Locale localeUsed = null; 065 066 if (StringUtils.isNotEmpty(userPattern)) { 067 if (locale != null) { 068 format = new SimpleDateFormat(userPattern, locale); 069 localeUsed = locale; 070 } else { 071 format = new SimpleDateFormat(userPattern); 072 localeUsed = Locale.getDefault(); 073 } 074 patternUsed = userPattern; 075 } else { 076 if (StringUtils.isNotEmpty(defaultPattern)) { 077 if (locale != null) { 078 format = new SimpleDateFormat(defaultPattern, locale); 079 localeUsed = locale; 080 } else { 081 format = new SimpleDateFormat(defaultPattern); 082 localeUsed = Locale.getDefault(); 083 } 084 patternUsed = defaultPattern; 085 } else { 086 // Use the English short date pattern if no pattern is specified 087 format = DateFormat.getDateInstance(DateFormat.SHORT, Locale.ENGLISH); 088 patternUsed = "DateFormat.SHORT"; 089 localeUsed = Locale.ENGLISH; 090 } 091 } 092 093 try { 094 return format.parse(date); 095 } catch (ParseException e) { 096 if (logger.isWarnEnabled()) { 097 logger.warn( 098 "skip ParseException: " + e.getMessage() + " during parsing date '" + date 099 + "' with pattern '" + patternUsed + "' and locale '" 100 + localeUsed + "'", 101 e); 102 } 103 104 return null; 105 } 106 } 107}