001 package org.apache.maven.model.profile.activation; 002 003 /* 004 * Licensed to the Apache Software Foundation (ASF) under one 005 * or more contributor license agreements. See the NOTICE file 006 * distributed with this work for additional information 007 * regarding copyright ownership. The ASF licenses this file 008 * to you under the Apache License, Version 2.0 (the 009 * "License"); you may not use this file except in compliance 010 * with the License. You may obtain a copy of the License at 011 * 012 * http://www.apache.org/licenses/LICENSE-2.0 013 * 014 * Unless required by applicable law or agreed to in writing, 015 * software distributed under the License is distributed on an 016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 017 * KIND, either express or implied. See the License for the 018 * specific language governing permissions and limitations 019 * under the License. 020 */ 021 022 import java.util.ArrayList; 023 import java.util.Arrays; 024 import java.util.List; 025 026 import org.apache.maven.model.Activation; 027 import org.apache.maven.model.Profile; 028 import org.apache.maven.model.building.ModelProblemCollector; 029 import org.apache.maven.model.building.ModelProblem.Severity; 030 import org.apache.maven.model.building.ModelProblem.Version; 031 import org.apache.maven.model.building.ModelProblemCollectorRequest; 032 import org.apache.maven.model.profile.ProfileActivationContext; 033 import org.codehaus.plexus.component.annotations.Component; 034 035 /** 036 * Determines profile activation based on the version of the current Java runtime. 037 * 038 * @author Benjamin Bentmann 039 */ 040 @Component( role = ProfileActivator.class, hint = "jdk-version" ) 041 public class JdkVersionProfileActivator 042 implements ProfileActivator 043 { 044 045 public boolean isActive( Profile profile, ProfileActivationContext context, ModelProblemCollector problems ) 046 { 047 boolean active = false; 048 049 Activation activation = profile.getActivation(); 050 051 if ( activation != null ) 052 { 053 String jdk = activation.getJdk(); 054 055 if ( jdk != null ) 056 { 057 String version = context.getSystemProperties().get( "java.version" ); 058 059 if ( version == null || version.length() <= 0 ) 060 { 061 problems.add( new ModelProblemCollectorRequest( Severity.ERROR, Version.BASE) 062 .setMessage( "Failed to determine Java version for profile " + profile.getId()) 063 .setLocation(activation.getLocation( "jdk" ))); 064 return false; 065 } 066 067 if ( jdk.startsWith( "!" ) ) 068 { 069 active = !version.startsWith( jdk.substring( 1 ) ); 070 } 071 else if ( isRange( jdk ) ) 072 { 073 active = isInRange( version, getRange( jdk ) ); 074 } 075 else 076 { 077 active = version.startsWith( jdk ); 078 } 079 } 080 } 081 082 return active; 083 } 084 085 private static boolean isInRange( String value, List<RangeValue> range ) 086 { 087 int leftRelation = getRelationOrder( value, range.get( 0 ), true ); 088 089 if ( leftRelation == 0 ) 090 { 091 return true; 092 } 093 094 if ( leftRelation < 0 ) 095 { 096 return false; 097 } 098 099 return getRelationOrder( value, range.get( 1 ), false ) <= 0; 100 } 101 102 private static int getRelationOrder( String value, RangeValue rangeValue, boolean isLeft ) 103 { 104 if ( rangeValue.value.length() <= 0 ) 105 { 106 return isLeft ? 1 : -1; 107 } 108 109 value = value.replaceAll( "[^0-9\\.\\-\\_]", "" ); 110 111 List<String> valueTokens = new ArrayList<String>( Arrays.asList( value.split( "[\\.\\-\\_]" ) ) ); 112 List<String> rangeValueTokens = new ArrayList<String>( Arrays.asList( rangeValue.value.split( "\\." ) ) ); 113 114 addZeroTokens( valueTokens, 3 ); 115 addZeroTokens( rangeValueTokens, 3 ); 116 117 for ( int i = 0; i < 3; i++ ) 118 { 119 int x = Integer.parseInt( valueTokens.get( i ) ); 120 int y = Integer.parseInt( rangeValueTokens.get( i ) ); 121 if ( x < y ) 122 { 123 return -1; 124 } 125 else if ( x > y ) 126 { 127 return 1; 128 } 129 } 130 if ( !rangeValue.closed ) 131 { 132 return isLeft ? -1 : 1; 133 } 134 return 0; 135 } 136 137 private static void addZeroTokens( List<String> tokens, int max ) 138 { 139 while ( tokens.size() < max ) 140 { 141 tokens.add( "0" ); 142 } 143 } 144 145 private static boolean isRange( String value ) 146 { 147 return value.startsWith( "[" ) || value.startsWith( "(" ); 148 } 149 150 private static List<RangeValue> getRange( String range ) 151 { 152 List<RangeValue> ranges = new ArrayList<RangeValue>(); 153 154 for ( String token : range.split( "," ) ) 155 { 156 if ( token.startsWith( "[" ) ) 157 { 158 ranges.add( new RangeValue( token.replace( "[", "" ), true ) ); 159 } 160 else if ( token.startsWith( "(" ) ) 161 { 162 ranges.add( new RangeValue( token.replace( "(", "" ), false ) ); 163 } 164 else if ( token.endsWith( "]" ) ) 165 { 166 ranges.add( new RangeValue( token.replace( "]", "" ), true ) ); 167 } 168 else if ( token.endsWith( ")" ) ) 169 { 170 ranges.add( new RangeValue( token.replace( ")", "" ), false ) ); 171 } 172 else if ( token.length() <= 0 ) 173 { 174 ranges.add( new RangeValue( "", false ) ); 175 } 176 } 177 if ( ranges.size() < 2 ) 178 { 179 ranges.add( new RangeValue( "99999999", false ) ); 180 } 181 return ranges; 182 } 183 184 private static class RangeValue 185 { 186 private String value; 187 188 private boolean closed; 189 190 RangeValue( String value, boolean closed ) 191 { 192 this.value = value.trim(); 193 this.closed = closed; 194 } 195 196 public String toString() 197 { 198 return value; 199 } 200 } 201 202 }