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.cli.StreamConsumer; 028import org.slf4j.Logger; 029import org.slf4j.LoggerFactory; 030 031/** 032 * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a> 033 */ 034public abstract class AbstractConsumer implements StreamConsumer { 035 protected final Logger logger = LoggerFactory.getLogger(getClass()); 036 037 /** 038 * Converts the date timestamp from the output into a date object. 039 * 040 * @param date TODO 041 * @param userPattern TODO 042 * @param defaultPattern TODO 043 * @return a date representing the timestamp of the log entry 044 */ 045 protected Date parseDate(String date, String userPattern, String defaultPattern) { 046 return parseDate(date, userPattern, defaultPattern, null); 047 } 048 049 /** 050 * Converts the date timestamp from the output into a date object. 051 * 052 * @param date TODO 053 * @param userPattern TODO 054 * @param defaultPattern TODO 055 * @param locale TODO 056 * @return a date representing the timestamp of the log entry 057 */ 058 protected Date parseDate(String date, String userPattern, String defaultPattern, Locale locale) { 059 DateFormat format; 060 061 String patternUsed = null; 062 Locale localeUsed = null; 063 064 if (userPattern != null && !userPattern.isEmpty()) { 065 if (locale != null) { 066 format = new SimpleDateFormat(userPattern, locale); 067 localeUsed = locale; 068 } else { 069 format = new SimpleDateFormat(userPattern); 070 localeUsed = Locale.getDefault(); 071 } 072 patternUsed = userPattern; 073 } else { 074 if (defaultPattern != null && !defaultPattern.isEmpty()) { 075 if (locale != null) { 076 format = new SimpleDateFormat(defaultPattern, locale); 077 localeUsed = locale; 078 } else { 079 format = new SimpleDateFormat(defaultPattern); 080 localeUsed = Locale.getDefault(); 081 } 082 patternUsed = defaultPattern; 083 } else { 084 // Use the English short date pattern if no pattern is specified 085 format = DateFormat.getDateInstance(DateFormat.SHORT, Locale.ENGLISH); 086 patternUsed = "DateFormat.SHORT"; 087 localeUsed = Locale.ENGLISH; 088 } 089 } 090 091 try { 092 return format.parse(date); 093 } catch (ParseException e) { 094 if (logger.isWarnEnabled()) { 095 logger.warn( 096 "skip ParseException: " + e.getMessage() + " during parsing date '" + date 097 + "' with pattern '" + patternUsed + "' and locale '" 098 + localeUsed + "'", 099 e); 100 } 101 102 return null; 103 } 104 } 105}