package org.apache.maven.scm.provider.cvslib.util;
   
   /*
    * 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.scm.providers.cvslib.settings.Settings;
  import org.apache.maven.scm.providers.cvslib.settings.io.xpp3.CvsXpp3Reader;
  import org.codehaus.plexus.util.ReaderFactory;
  import org.codehaus.plexus.util.xml.pull.XmlPullParserException;
  
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  
  /**
   * @author <a href="mailto:evenisse@apache.org">Emmanuel Venisse</a>
   *
   */
  public class CvsUtil
  {
      protected static final String CVS_SETTINGS_FILENAME = "cvs-settings.xml";
  
      public static final File DEFAULT_SETTINGS_DIRECTORY = new File( System.getProperty( "user.home" ), ".scm" );
  
      private static File settingsDirectory = DEFAULT_SETTINGS_DIRECTORY;
  
      
      private static Settings settings;
      
      private CvsUtil()
      {
          // no op
      }
  
      public static Settings getSettings()
      {
          if ( settings == null )
          {
              settings = readSettings();
          }
          return settings;
      }
      
      public static Settings readSettings()
      {
          File settingsFile = getSettingsFile();
  
          if ( settingsFile.exists() )
          {
              CvsXpp3Reader reader = new CvsXpp3Reader();
              try
              {
                  return reader.read( ReaderFactory.newXmlReader( settingsFile ) );
              }
              catch ( FileNotFoundException e )
              {
                  // skip error 
              }
              catch ( IOException e )
              {
                  // skip error
              }
              catch ( XmlPullParserException e )
              {
                  String message = settingsFile.getAbsolutePath() + " isn't well formed. SKIPPED." + e.getMessage();
  
                  System.err.println( message );
              }
          }
  
          return new Settings();
      }
  
      public static void setSettingsDirectory( File directory )
      {
          settingsDirectory = directory;
          settings = readSettings();
      }
      
      public static File getSettingsFile()
      {
          return new File( settingsDirectory, CVS_SETTINGS_FILENAME );
      }
 }