Package com.sos.JSHelper.Archiver

Source Code of com.sos.JSHelper.Archiver.JSArchiver

/********************************************************* begin of preamble
**
** Copyright (C) 2003-2010 Software- und Organisations-Service GmbH.
** All rights reserved.
**
** This file may be used under the terms of either the
**
**   GNU General Public License version 2.0 (GPL)
**
**   as published by the Free Software Foundation
**   http://www.gnu.org/licenses/gpl-2.0.txt and appearing in the file
**   LICENSE.GPL included in the packaging of this file.
**
** or the
** 
**   Agreement for Purchase and Licensing
**
**   as offered by Software- und Organisations-Service GmbH
**   in the respective terms of supply that ship with this file.
**
** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
** IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
** THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
** PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
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** POSSIBILITY OF SUCH DAMAGE.
********************************************************** end of preamble*/
package com.sos.JSHelper.Archiver;

import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.GZIPOutputStream;

import com.sos.JSHelper.Listener.JSListener;
import com.sos.JSHelper.Listener.JSListenerClass;
import com.sos.JSHelper.io.Files.JSFile;


public class JSArchiver extends JSListenerClass {

  private final String    conClassName  = "JSArchiver";

  // private String fileNameToArchive = null;
  // private String archiveFolderName = null;
  // private boolean archiveWithDelete = false;

  private JSArchiverOptions  objOptions    = null;

  public JSArchiver() {
  }

  public JSArchiver(final JSListener pobjListener) {
    registerMessageListener(pobjListener);
  }

  public JSArchiverOptions Options() {
    if (objOptions == null) {
      objOptions = new JSArchiverOptions();
    }
    return objOptions;
  }

  public void Options(final JSArchiverOptions pobjOptions) throws Exception {
    objOptions = pobjOptions;
    objOptions.CheckMandatory();
  }

  public void Archive(final JSArchiverOptions pobjArchiveOptions) throws Exception {
    this.Options(pobjArchiveOptions);
    if (pobjArchiveOptions.UseArchive()) {
      this.Archive();
    }
  }

  /**
   *
   * \brief Archive
   *
   * \details
   *
   * \return void
   *
   * @throws Exception
   */
  public void Archive() throws Exception {

    final String conMethodName = conClassName + "::Archive";

    String nameOfArchiveFile = null;
    JSFile fleArchiveFile = null;
    String strFName = null;
    String strFileName = null;

    SignalInfo(String.format("%1$s: starting, file to archive: '%2$s', archive-folder: '%3$s'.", conMethodName, objOptions.FileName(), objOptions
        .ArchiveFolderName()));

    if (objOptions == null) {
      SignalAbort(String.format("%1$s: no Options specified. Archive aborted.", conMethodName));
    }

    objOptions.CheckMandatory();

    strFileName = objOptions.FileName();
    JSFile fileToArchive = new JSFile(strFileName);
    fileToArchive.registerMessageListener(this);
    fileToArchive.MustExist();
//    String strOriginalFileName = fileToArchive.getName();

    if (objOptions.CreateTimeStamp()) {
      /*
       * kein Rename-TimeStamp verwenden, zur Sicherheit, damit die
       * Original-Datei erhalten bleibt (jedenfalls erstmal).
       */
      fileToArchive = new JSFile(fileToArchive.CopyTimeStamp());
//    geht nicht auf be0027  fileToArchive.deleteOnExit();
      strFName = fileToArchive.getName();
    }
    else {
      strFName = fileToArchive.getName();
    }

    if (objOptions.CompressArchivedFile()) {
      // TODO: eigene Klasse mit eigenen Optionen implementieren
      // TODO: entweder als "eigenen" File ablegen oder in ein bestehendes ZIP-File integrieren.
      nameOfArchiveFile = objOptions.ArchiveFolderName() + strFName + ".gz";
      fleArchiveFile = new JSFile(nameOfArchiveFile);
      if (fleArchiveFile.exists()) {
        SignalAbort(String.format("%1$s: file '%2$s' already exist.", conMethodName, nameOfArchiveFile));
      }
      SignalInfo(String.format("%3$s: Zip '%1$s' into Zip-File '%2$s'", fileToArchive.getAbsoluteFile(), fleArchiveFile.getAbsoluteFile(), conMethodName));

      final BufferedInputStream in = new BufferedInputStream(new FileInputStream(fileToArchive));
      final GZIPOutputStream out = new GZIPOutputStream(new FileOutputStream(fleArchiveFile));

      try {

        final byte buffer[] = new byte[1024];
        int bytesRead;
        while ((bytesRead = in.read(buffer)) != -1) {
          out.write(buffer, 0, bytesRead);
        }

      } catch (final Exception e) {
        throw e;
      } finally {
        try {
          in.close();
        } catch (final Exception e) {
          throw e;
        }
        try {
          out.close();
        } catch (final Exception e) {
          throw e;
        }
      }

    }
    else {
      nameOfArchiveFile = objOptions.ArchiveFolderName() + strFName;
      fileToArchive.copy(nameOfArchiveFile);
    }

    message(String.format("%1$s: Archive file created '%2$s'.", conMethodName, nameOfArchiveFile));
    if (objOptions.DeleteFileAfterArchiving() || objOptions.CreateTimeStamp()) {
      final JSFile fileToDelete = new JSFile(strFileName);
      fileToDelete.delete();
      SignalInfo(String.format("%1$s: archived file deleted '%2$s'.", conMethodName, strFileName));
    }
    if (objOptions.CreateTimeStamp()) {
/*
* hier mu� gel�scht werden, da der die Datei mit dem Time-Stamp-Namen
* auch noch im Source-Verzeichnis liegt. Und hier mu� diese weg.
*
*/
      fileToArchive.delete();
      SignalInfo(String.format("%1$s: archived file deleted '%2$s'.", conMethodName, fileToArchive.getName()));
    }
    SignalInfo(String.format("%1$s: end", conMethodName));
  }
} // public class JSArchiver
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