BundleManifestXmlWriter.java example

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pentaho-reporting-master
/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* Copyright (c) 2008 - 2009 Pentaho Corporation and Contributors.  All rights reserved.
*/

package org.pentaho.reporting.libraries.docbundle.metadata.writer;

import org.pentaho.reporting.libraries.docbundle.LibDocBundleBoot;
import org.pentaho.reporting.libraries.docbundle.metadata.BundleManifest;
import org.pentaho.reporting.libraries.xmlns.common.AttributeList;
import org.pentaho.reporting.libraries.xmlns.writer.DefaultTagDescription;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriter;
import org.pentaho.reporting.libraries.xmlns.writer.XmlWriterSupport;

import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.Arrays;

public class BundleManifestXmlWriter {
  public static final String NAMESPACE = "urn:oasis:names:tc:opendocument:xmlns:manifest:1.0";
  private static final String CONFIG_PREFIX = "org.pentaho.reporting.libraries.docbundle.metadata.writer.manifest.";

  private BundleManifest bundleManifest;

  public BundleManifestXmlWriter( final BundleManifest bundleManifest ) {
    if ( bundleManifest == null ) {
      throw new NullPointerException();
    }

    this.bundleManifest = bundleManifest;
  }

  public void write( final OutputStream out ) throws IOException {
    final DefaultTagDescription tagDescription = new DefaultTagDescription();
    tagDescription.configure( LibDocBundleBoot.getInstance().getGlobalConfig(), CONFIG_PREFIX );

    final XmlWriter writer = new XmlWriter
      ( new OutputStreamWriter( out, "UTF-8" ), tagDescription, "  ", "\n" );
    writer.setAlwaysAddNamespace( true );
    writer.setWriteFinalLinebreak( true );

    try {

      writer.writeXmlDeclaration( "UTF-8" );

      final AttributeList rootAttributes = new AttributeList();
      rootAttributes.addNamespaceDeclaration( "manifest", NAMESPACE );
      writer.writeTag( NAMESPACE, "manifest", rootAttributes, XmlWriterSupport.OPEN );

      final String[] entries = bundleManifest.getEntries();
      Arrays.sort( entries );

      final int length = entries.length;
      for ( int i = 0; i < length; i++ ) {
        final String fullPath = entries[ i ];
        final String mediaType = bundleManifest.getMimeType( fullPath );
        if ( mediaType == null ) {
          continue;
        }

        final AttributeList entryAttrs = new AttributeList();
        final String[] attributeNames = bundleManifest.getAttributeNames( fullPath );

        for ( int j = 0; j < attributeNames.length; j++ ) {
          final String attributeName = attributeNames[ j ];
          final String attr = bundleManifest.getAttribute( fullPath, attributeName );
          if ( attr != null ) {
            entryAttrs.setAttribute( NAMESPACE, attributeName, attr );
          }
        }
        entryAttrs.setAttribute( NAMESPACE, "full-path", fullPath );
        entryAttrs.setAttribute( NAMESPACE, "media-type", mediaType );
        writer.writeTag( NAMESPACE, "file-entry", entryAttrs, XmlWriterSupport.CLOSE );
      }

      writer.writeCloseTag();
    } finally {
      writer.flush();
    }
  }
}