package org.apache.maven.shared.utils.xml;
   
   /*
    * 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 java.io.File;
  import java.io.FileInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.Reader;
  import java.net.URL;
  import java.net.URLConnection;
  import java.util.regex.Pattern;
  
  /**
   * 
   */
  public class XmlStreamReader
          extends Reader
  {
      private final org.apache.commons.io.input.XmlStreamReader reader;
  
      @SuppressWarnings( "checkstyle:staticvariablename" )
      private static String _staticDefaultEncoding = null;
  
      public static void setDefaultEncoding( String encoding )
      {
          _staticDefaultEncoding = encoding;
      }
  
      public static String getDefaultEncoding()
      {
          return _staticDefaultEncoding;
      }
  
      public XmlStreamReader( File file )
              throws IOException
      {
          this( new FileInputStream( file ) );
      }
  
      public XmlStreamReader( InputStream is )
              throws IOException
      {
          this( is, true );
      }
  
      public XmlStreamReader( InputStream is, boolean lenient )
              throws IOException, XmlStreamReaderException
      {
          reader = new org.apache.commons.io.input.XmlStreamReader( is, lenient, _staticDefaultEncoding );
      }
  
      public XmlStreamReader( URL url )
              throws IOException
      {
          this( url.openConnection() );
      }
  
      public XmlStreamReader( URLConnection conn )
              throws IOException
      {
          reader = new org.apache.commons.io.input.XmlStreamReader( conn, _staticDefaultEncoding );
      }
  
      public XmlStreamReader( InputStream is, String httpContentType )
              throws IOException
      {
          this( is, httpContentType, true );
      }
  
      public XmlStreamReader( InputStream is, String httpContentType, boolean lenient, String defaultEncoding )
              throws IOException, XmlStreamReaderException
      {
          reader = new org.apache.commons.io.input.XmlStreamReader( is, httpContentType, lenient,
                  ( defaultEncoding == null )
                          ? _staticDefaultEncoding
                          : defaultEncoding );
      }
  
      public XmlStreamReader( InputStream is, String httpContentType, boolean lenient )
              throws IOException, XmlStreamReaderException
      {
         this( is, httpContentType, lenient, null );
     }
 
     public String getEncoding()
     {
         return reader.getEncoding();
     }
 
     public int read( char[] buf, int offset, int len )
             throws IOException
     {
         return reader.read( buf, offset, len );
     }
 
     public void close()
             throws IOException
     {
         reader.close();
     }
 
     static final Pattern ENCODING_PATTERN =
             Pattern.compile( "<\\?xml.*encoding[\\s]*=[\\s]*((?:\".[^\"]*\")|(?:'.[^']*'))", Pattern.MULTILINE );
 }