o adding ProjectUtils to the list of things required in the wild

git-svn-id: https://svn.apache.org/repos/asf/maven/components/trunk@726936 13f79535-47bb-0310-9956-ffa450edef68

maven-compat/src/main/java/org/apache/maven/project/ProjectUtils.java

@@ -0,0 +1,137 @@
+package org.apache.maven.project;
+
+/*
+ * 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 org.apache.maven.artifact.InvalidRepositoryException;
+import org.apache.maven.artifact.repository.ArtifactRepository;
+import org.apache.maven.artifact.repository.ArtifactRepositoryFactory;
+import org.apache.maven.artifact.repository.ArtifactRepositoryPolicy;
+import org.apache.maven.model.DeploymentRepository;
+import org.apache.maven.model.Repository;
+import org.apache.maven.model.RepositoryPolicy;
+import org.codehaus.plexus.PlexusContainer;
+
+import java.util.ArrayList;
+import java.util.Iterator;
+import java.util.List;
+
+public final class ProjectUtils
+{
+    private ProjectUtils()
+    {
+    }
+
+    public static List buildArtifactRepositories( List repositories,
+                                                  ArtifactRepositoryFactory artifactRepositoryFactory,
+                                                  PlexusContainer container )
+        throws InvalidRepositoryException
+    {
+
+        List repos = new ArrayList();
+
+        for ( Iterator i = repositories.iterator(); i.hasNext(); )
+        {
+            Repository mavenRepo = (Repository) i.next();
+
+            ArtifactRepository artifactRepo =
+                buildArtifactRepository( mavenRepo, artifactRepositoryFactory, container );
+
+            if ( !repos.contains( artifactRepo ) )
+            {
+                repos.add( artifactRepo );
+            }
+        }
+        return repos;
+    }
+
+    public static ArtifactRepository buildDeploymentArtifactRepository( DeploymentRepository repo,
+                                                                        ArtifactRepositoryFactory artifactRepositoryFactory,
+                                                                        PlexusContainer container )
+        throws InvalidRepositoryException
+    {
+        if ( repo != null )
+        {
+            String id = repo.getId();
+            String url = repo.getUrl();
+
+            return artifactRepositoryFactory.createDeploymentArtifactRepository( id, url, repo.getLayout(),
+                                                                                 repo.isUniqueVersion() );
+        }
+        else
+        {
+            return null;
+        }
+    }
+
+    public static ArtifactRepository buildArtifactRepository( Repository repo,
+                                                              ArtifactRepositoryFactory artifactRepositoryFactory,
+                                                              PlexusContainer container )
+        throws InvalidRepositoryException
+    {
+        if ( repo != null )
+        {
+            String id = repo.getId();
+            String url = repo.getUrl();
+
+            if ( id == null || id.trim().length() < 1 )
+            {
+                throw new MissingRepositoryElementException( "Repository ID must not be empty (URL is: " + url + ")." );
+            }
+
+            if ( url == null || url.trim().length() < 1 )
+            {
+                throw new MissingRepositoryElementException( "Repository URL must not be empty (ID is: " + id + ").",
+                                                             id );
+            }
+
+            ArtifactRepositoryPolicy snapshots = buildArtifactRepositoryPolicy( repo.getSnapshots() );
+            ArtifactRepositoryPolicy releases = buildArtifactRepositoryPolicy( repo.getReleases() );
+
+            return artifactRepositoryFactory.createArtifactRepository( id, url, repo.getLayout(), snapshots, releases );
+        }
+        else
+        {
+            return null;
+        }
+    }
+
+    private static ArtifactRepositoryPolicy buildArtifactRepositoryPolicy( RepositoryPolicy policy )
+    {
+        boolean enabled = true;
+        String updatePolicy = null;
+        String checksumPolicy = null;
+
+        if ( policy != null )
+        {
+            enabled = policy.isEnabled();
+            if ( policy.getUpdatePolicy() != null )
+            {
+                updatePolicy = policy.getUpdatePolicy();
+            }
+            if ( policy.getChecksumPolicy() != null )
+            {
+                checksumPolicy = policy.getChecksumPolicy();
+            }
+        }
+
+        return new ArtifactRepositoryPolicy( enabled, updatePolicy, checksumPolicy );
+    }
+
+}