package org.apache.maven.profiles;

 /*

  * 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.profiles.io.xpp3.ProfilesXpp3Reader;

 import org.codehaus.plexus.logging.AbstractLogEnabled;

 import org.codehaus.plexus.util.IOUtil;

 import org.codehaus.plexus.util.ReaderFactory;

 import org.codehaus.plexus.util.interpolation.EnvarBasedValueSource;

 import org.codehaus.plexus.util.interpolation.RegexBasedInterpolator;

 import org.codehaus.plexus.util.xml.pull.XmlPullParserException;

 import java.io.File;

 import java.io.IOException;

 import java.io.Reader;

 import java.io.StringReader;

 import java.io.StringWriter;

 public class DefaultMavenProfilesBuilder

     extends AbstractLogEnabled

     implements MavenProfilesBuilder

 {

     private static final String PROFILES_XML_FILE = "profiles.xml";

     public ProfilesRoot buildProfiles( File basedir )

         throws IOException, XmlPullParserException

     {

         File profilesXml = new File( basedir, PROFILES_XML_FILE );

         ProfilesRoot profilesRoot = null;

         if ( profilesXml.exists() )

         {

             ProfilesXpp3Reader reader = new ProfilesXpp3Reader();

             Reader profileReader = null;

             try

             {

                 profileReader = ReaderFactory.newXmlReader( profilesXml );

                 StringWriter sWriter = new StringWriter();

                 IOUtil.copy( profileReader, sWriter );

                 String rawInput = sWriter.toString();

                 try

                 {

                     RegexBasedInterpolator interpolator = new RegexBasedInterpolator();

                     interpolator.addValueSource( new EnvarBasedValueSource() );

                     rawInput = interpolator.interpolate( rawInput, "settings" );

                 }

                 catch ( Exception e )

                 {

                     getLogger().warn( "Failed to initialize environment variable resolver. Skipping environment substitution in " + PROFILES_XML_FILE + "." );

                     getLogger().debug( "Failed to initialize envar resolver. Skipping resolution.", e );

                 }

                 StringReader sReader = new StringReader( rawInput );

                 profilesRoot = reader.read( sReader );

             }

             finally

             {

                 IOUtil.close( profileReader );

             }

         }

         return profilesRoot;

     }

 }