| package org.apache.maven.plugin.version; |
| |
| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| import java.util.Calendar; |
| import java.util.Date; |
| import java.util.HashMap; |
| import java.util.Map; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| public final class IntervalUtils |
| { |
| |
| private static final String PERIOD_PART_PATTERN = "[0-9]+[WwDdHhMm]?"; |
| |
| private static final Map PART_TYPE_CONTRIBUTIONS; |
| |
| static |
| { |
| Map contributions = new HashMap(); |
| |
| contributions.put( "w", new Long( 7 * 24 * 60 * 60 * 1000 ) ); |
| contributions.put( "d", new Long( 24 * 60 * 60 * 1000 ) ); |
| contributions.put( "h", new Long( 60 * 60 * 1000 ) ); |
| contributions.put( "m", new Long( 60 * 1000 ) ); |
| |
| PART_TYPE_CONTRIBUTIONS = contributions; |
| } |
| |
| private IntervalUtils() |
| { |
| // don't allow construction |
| } |
| |
| public static boolean isExpired( String intervalSpec, Date lastChecked ) |
| { |
| if( "never".equalsIgnoreCase( intervalSpec ) ) |
| { |
| return false; |
| } |
| else if( "always".equalsIgnoreCase( intervalSpec ) ) |
| { |
| return true; |
| } |
| else if( intervalSpec != null && intervalSpec.toLowerCase().startsWith("interval:") && intervalSpec.length() > "interval:".length()) |
| { |
| String intervalPart = intervalSpec.substring( "interval:".length() ); |
| |
| // subtract the specified period from now() and see if it's still after the lastChecked date. |
| long period = IntervalUtils.parseInterval(intervalPart); |
| |
| Calendar cal = Calendar.getInstance(); |
| |
| cal.setTimeInMillis( System.currentTimeMillis() - period ); |
| |
| Date test = cal.getTime(); |
| |
| return lastChecked == null || test.after( lastChecked ); |
| } |
| else |
| { |
| throw new IllegalArgumentException( "Invalid interval specification: \'" + intervalSpec + "\'" ); |
| } |
| } |
| |
| public static long parseInterval( String interval ) |
| { |
| Matcher partMatcher = Pattern.compile(PERIOD_PART_PATTERN).matcher(interval); |
| |
| long period = 0; |
| |
| while( partMatcher.find() ) |
| { |
| String part = partMatcher.group(); |
| |
| period += getPartPeriod( part ); |
| } |
| |
| return period; |
| } |
| |
| private static long getPartPeriod( String part ) |
| { |
| char type = part.charAt( part.length() - 1 ); |
| |
| String coefficientPart; |
| |
| if( Character.isLetter(type)) |
| { |
| coefficientPart = part.substring( 0, part.length() - 1); |
| } |
| else |
| { |
| // if the interval doesn't specify a resolution, assume minutes. |
| coefficientPart = part; |
| |
| type = 'm'; |
| } |
| |
| int coefficient = Integer.parseInt( coefficientPart ); |
| |
| Long period = (Long) PART_TYPE_CONTRIBUTIONS.get( "" + Character.toLowerCase( type ) ); |
| |
| long result = 0; |
| |
| if( period != null ) |
| { |
| result = coefficient * period.longValue(); |
| } |
| |
| return result; |
| } |
| |
| } |