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.io.File;
023
024 import org.apache.maven.model.Activation;
025 import org.apache.maven.model.ActivationFile;
026 import org.apache.maven.model.Profile;
027 import org.apache.maven.model.building.ModelProblemCollector;
028 import org.apache.maven.model.building.ModelProblem.Severity;
029 import org.apache.maven.model.building.ModelProblem.Version;
030 import org.apache.maven.model.building.ModelProblemCollectorRequest;
031 import org.apache.maven.model.path.PathTranslator;
032 import org.apache.maven.model.profile.ProfileActivationContext;
033 import org.codehaus.plexus.component.annotations.Component;
034 import org.codehaus.plexus.component.annotations.Requirement;
035 import org.codehaus.plexus.interpolation.AbstractValueSource;
036 import org.codehaus.plexus.interpolation.MapBasedValueSource;
037 import org.codehaus.plexus.interpolation.RegexBasedInterpolator;
038 import org.codehaus.plexus.util.StringUtils;
039
040 /**
041 * Determines profile activation based on the existence/absence of some file.
042 *
043 * @author Benjamin Bentmann
044 */
045 @Component( role = ProfileActivator.class, hint = "file" )
046 public class FileProfileActivator
047 implements ProfileActivator
048 {
049
050 @Requirement
051 private PathTranslator pathTranslator;
052
053 public FileProfileActivator setPathTranslator( PathTranslator pathTranslator )
054 {
055 this.pathTranslator = pathTranslator;
056 return this;
057 }
058
059 public boolean isActive( Profile profile, ProfileActivationContext context, ModelProblemCollector problems )
060 {
061 Activation activation = profile.getActivation();
062
063 if ( activation == null )
064 {
065 return false;
066 }
067
068 ActivationFile file = activation.getFile();
069
070 if ( file == null )
071 {
072 return false;
073 }
074
075 String path;
076 boolean missing;
077
078 if ( StringUtils.isNotEmpty( file.getExists() ) )
079 {
080 path = file.getExists();
081 missing = false;
082 }
083 else if ( StringUtils.isNotEmpty( file.getMissing() ) )
084 {
085 path = file.getMissing();
086 missing = true;
087 }
088 else
089 {
090 return false;
091 }
092
093 RegexBasedInterpolator interpolator = new RegexBasedInterpolator();
094
095 final File basedir = context.getProjectDirectory();
096
097 if ( basedir != null )
098 {
099 interpolator.addValueSource( new AbstractValueSource( false )
100 {
101 public Object getValue( String expression )
102 {
103 /*
104 * NOTE: We intentionally only support ${basedir} and not ${project.basedir} as the latter form
105 * would suggest that other project.* expressions can be used which is however beyond the design.
106 */
107 if ( "basedir".equals( expression ) )
108 {
109 return basedir.getAbsolutePath();
110 }
111 return null;
112 }
113 } );
114 }
115 else if ( path.indexOf( "${basedir}" ) >= 0 )
116 {
117 return false;
118 }
119
120 interpolator.addValueSource( new MapBasedValueSource( context.getUserProperties() ) );
121
122 interpolator.addValueSource( new MapBasedValueSource( context.getSystemProperties() ) );
123
124 try
125 {
126 path = interpolator.interpolate( path, "" );
127 }
128 catch ( Exception e )
129 {
130 problems.add( new ModelProblemCollectorRequest( Severity.ERROR, Version.BASE)
131 .setMessage( "Failed to interpolate file location " + path + " for profile " + profile.getId() + ": " + e.getMessage())
132 .setLocation( file.getLocation( missing ? "missing" : "exists" ))
133 .setException( e ));
134 return false;
135 }
136
137 path = pathTranslator.alignToBaseDirectory( path, basedir );
138
139 File f = new File( path );
140
141 if ( !f.isAbsolute() )
142 {
143 return false;
144 }
145
146 boolean fileExists = f.exists();
147
148 return missing ? !fileExists : fileExists;
149 }
150
151 }