1 package org.apache.maven.index.locator;
2
3 /*
4 * Licensed to the Apache Software Foundation (ASF) under one
5 * or more contributor license agreements. See the NOTICE file
6 * distributed with this work for additional information
7 * regarding copyright ownership. The ASF licenses this file
8 * to you under the Apache License, Version 2.0 (the
9 * "License"); you may not use this file except in compliance
10 * with the License. You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing,
15 * software distributed under the License is distributed on an
16 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17 * KIND, either express or implied. See the License for the
18 * specific language governing permissions and limitations
19 * under the License.
20 */
21
22 import java.io.File;
23 import java.io.FileInputStream;
24 import java.io.IOException;
25
26 import org.apache.maven.index.ArtifactContext.ModelReader;
27 import org.apache.maven.index.artifact.ArtifactPackagingMapper;
28 import org.apache.maven.index.artifact.Gav;
29 import org.apache.maven.index.artifact.GavCalculator;
30 import org.apache.maven.model.Model;
31
32 /**
33 * Artifact locator.
34 *
35 * @author Damian Bradicich
36 */
37 public class ArtifactLocator
38 implements GavHelpedLocator
39 {
40 private final ArtifactPackagingMapper mapper;
41
42 public ArtifactLocator( ArtifactPackagingMapper mapper )
43 {
44 this.mapper = mapper;
45 }
46
47 public File locate( File source, GavCalculator gavCalculator, Gav gav )
48 {
49 // if we don't have this data, nothing we can do
50 if ( source == null || !source.exists() || gav == null || gav.getArtifactId() == null
51 || gav.getVersion() == null )
52 {
53 return null;
54 }
55
56 try
57 {
58 // need to read the pom model to get packaging
59 Model model = new ModelReader().readModel( new FileInputStream( source ) );
60
61 if ( model == null )
62 {
63 return null;
64 }
65
66 // now generate the artifactname
67 String artifactName =
68 gav.getArtifactId() + "-" + gav.getVersion() + "."
69 + mapper.getExtensionForPackaging( model.getPackaging() );
70
71 File artifact = new File( source.getParent(), artifactName );
72
73 if ( !artifact.exists() )
74 {
75 return null;
76 }
77
78 return artifact;
79 }
80 catch ( IOException e )
81 {
82 return null;
83 }
84 }
85 }