Java tutorial
/* * Created on 20-Aug-2009 * Copyright (C) 2009 by Andrea Vacondio. * * * This library is provided under dual licenses. * You may choose the terms of the Lesser General Public License version 2.1 or the General Public License version 2 * License at your discretion. * * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License. * * This library 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. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * * * This program is free software; you can redistribute it and/or modify it under the terms of the * GNU General Public License as published by the Free Software Foundation; * either version 2 of the License. * * 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 General Public License for more details. * You should have received a copy of the GNU General Public License along with this program; * if not, write to the Free Software Foundation, Inc., * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ package org.pdfsam.console.business.pdf.handlers; import java.io.File; import java.io.FileOutputStream; import org.apache.log4j.Logger; import org.pdfsam.console.business.ConsoleServicesFacade; import org.pdfsam.console.business.dto.PageLabel; import org.pdfsam.console.business.dto.WorkDoneDataModel; import org.pdfsam.console.business.dto.commands.AbstractParsedCommand; import org.pdfsam.console.business.dto.commands.PageLabelsParsedCommand; import org.pdfsam.console.business.pdf.handlers.interfaces.AbstractCmdExecutor; import org.pdfsam.console.exceptions.console.ConsoleException; import org.pdfsam.console.exceptions.console.PageLabelsException; import org.pdfsam.console.utils.FileUtility; import org.pdfsam.console.utils.PdfUtility; import com.lowagie.text.Document; import com.lowagie.text.pdf.PdfCopy; import com.lowagie.text.pdf.PdfPageLabels; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.RandomAccessFileOrArray; /** * Executes the page labels command * * @author Andrea Vacondio * */ public class PageLabelsCmdExecutor extends AbstractCmdExecutor { private static final Logger LOG = Logger.getLogger(PageLabelsCmdExecutor.class.getPackage().getName()); private PdfReader pdfReader = null; private PdfCopy pdfWriter = null; public void execute(AbstractParsedCommand parsedCommand) throws ConsoleException { if ((parsedCommand != null) && (parsedCommand instanceof PageLabelsParsedCommand)) { PageLabelsParsedCommand inputCommand = (PageLabelsParsedCommand) parsedCommand; setPercentageOfWorkDone(0); Document currentDocument; try { File tmpFile = FileUtility.generateTmpFile(inputCommand.getOutputFile()); LOG.debug("Opening " + inputCommand.getInputFile().getFile().getAbsolutePath()); pdfReader = PdfUtility.readerFor(inputCommand.getInputFile()); pdfReader.removeUnusedObjects(); pdfReader.consolidateNamedDestinations(); int n = pdfReader.getNumberOfPages(); currentDocument = new Document(pdfReader.getPageSizeWithRotation(1)); pdfWriter = new PdfCopy(currentDocument, new FileOutputStream(tmpFile)); // set compressed setCompressionSettingOnWriter(inputCommand, pdfWriter); // set pdf version setPdfVersionSettingOnWriter(inputCommand, pdfWriter, Character.valueOf(pdfReader.getPdfVersion())); // set creator currentDocument.addCreator(ConsoleServicesFacade.CREATOR); currentDocument.open(); for (int count = 1; count <= n; count++) { pdfWriter.addPage(pdfWriter.getImportedPage(pdfReader, count)); } pdfReader.close(); pdfWriter.freeReader(pdfReader); // set labels PdfPageLabels pageLabels = new PdfPageLabels(); PageLabel[] labels = inputCommand.getLabels(); // last step is creating the file int stepsNumber = labels.length + 1; for (int i = 0; i < labels.length; i++) { if (labels[i].getPageNumber() <= n) { pageLabels.addPageLabel(labels[i].getPageNumber(), getPageLabelStyle(labels[i].getStyle()), labels[i].getPrefix(), labels[i].getLogicalPageNumber()); } else { LOG.warn("Page number out of range, label starting at page " + labels[i].getPageNumber() + " will be ignored"); } setPercentageOfWorkDone((i * WorkDoneDataModel.MAX_PERGENTAGE) / stepsNumber); } pdfWriter.setPageLabels(pageLabels); currentDocument.close(); pdfWriter.close(); FileUtility.renameTemporaryFile(tmpFile, inputCommand.getOutputFile(), inputCommand.isOverwrite()); LOG.debug("Page labels set on file " + inputCommand.getOutputFile()); } catch (Exception e) { throw new PageLabelsException(e); } finally { setWorkCompleted(); } } else { throw new ConsoleException(ConsoleException.ERR_BAD_COMMAND); } } /** * mapping from the console style variable to the iText variable * * @param style * @return iText style variable */ private int getPageLabelStyle(String style) { int retVal = PdfPageLabels.DECIMAL_ARABIC_NUMERALS; if (PageLabel.ARABIC.equals(style)) { retVal = PdfPageLabels.DECIMAL_ARABIC_NUMERALS; } else if (PageLabel.EMPTY.equals(style)) { retVal = PdfPageLabels.EMPTY; } else if (PageLabel.LLETTER.equals(style)) { retVal = PdfPageLabels.LOWERCASE_LETTERS; } else if (PageLabel.LROMAN.equals(style)) { retVal = PdfPageLabels.LOWERCASE_ROMAN_NUMERALS; } else if (PageLabel.ULETTER.equals(style)) { retVal = PdfPageLabels.UPPERCASE_LETTERS; } else if (PageLabel.UROMAN.equals(style)) { retVal = PdfPageLabels.UPPERCASE_ROMAN_NUMERALS; } return retVal; } public void clean() { closePdfReader(pdfReader); closePdfWriter(pdfWriter); } }