Package org.pentaho.reporting.libraries.docbundle.metadata.writer

Source Code of org.pentaho.reporting.libraries.docbundle.metadata.writer.BundleManifestXmlWriter

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

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;

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();
    }
  }
}
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