de.uzk.hki.da.convert.PdfConversionStrategy.java Source code

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Here is the source code for de.uzk.hki.da.convert.PdfConversionStrategy.java

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/*
 DA-NRW Software Suite | ContentBroker
 Copyright (C) 2013 Historisch-Kulturwissenschaftliche Informationsverarbeitung
 Universitt zu Kln
    
 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 3 of the License, or
 (at your option) any later version.
    
 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, see <http://www.gnu.org/licenses/>.
 */

package de.uzk.hki.da.convert;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.apache.commons.io.FilenameUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import de.uzk.hki.da.format.KnownFormatCmdLineErrors;
import de.uzk.hki.da.model.ConversionInstruction;
import de.uzk.hki.da.model.DAFile;
import de.uzk.hki.da.model.Event;
import de.uzk.hki.da.model.Object;
import de.uzk.hki.da.model.WorkArea;
import de.uzk.hki.da.utils.CommandLineConnector;
import de.uzk.hki.da.utils.Path;
import de.uzk.hki.da.utils.ProcessInformation;
import de.uzk.hki.da.utils.StringUtilities;

/**
 * LZA Conversion Strategy for PDF Files.
 * Does a conversion using the Ghostscript Library. 
 * @author Jens Peters
 *
 */
public class PdfConversionStrategy implements ConversionStrategy {

    /** The logger. */
    private static Logger logger = LoggerFactory.getLogger(PdfConversionStrategy.class);

    /** The command line. */
    protected String commandLine;

    /** The object. */
    private Object object;

    /** The cli connector. */
    protected CommandLineConnector cliConnector;

    /**
     * Convert file.
     *
     * @param ci the ci
     * @return the list
     * @throws FileNotFoundException the file not found exception
     * @Author : jens Peters
     */
    @Override
    public List<Event> convertFile(WorkArea wa, ConversionInstruction ci) throws FileNotFoundException {
        if (object.getLatestPackage() == null)
            throw new IllegalStateException("Package not set");
        Path.make(wa.dataPath(), object.getNameOfLatestBRep(), ci.getTarget_folder()).toFile().mkdirs();
        List<Event> results = new ArrayList<Event>();
        File result = new File(generateTargetFilePath(wa, ci));
        String commandAsArray[] = new String[] { "gs", "-q", "-dPDFA", "-dPDFACompatibilityPolicy=1", "-dBATCH",
                "-dNOPAUSE", "-dNOOUTERSAVE", "-dUseCIEColor", "-sProcessColorModel=DeviceCMYK",
                "-sDEVICE=pdfwrite", "-sOutputFile=" + result.getAbsolutePath(), "conf/PDFA_def.ps",
                wa.toFile(ci.getSource_file()).getAbsolutePath() };
        ProcessInformation pi = null;
        try {
            pi = cliConnector.runCmdSynchronously(commandAsArray);
        } catch (IOException e1) {
            throw new RuntimeException("GS command not succeeded, not found");
        }
        if (pi.getExitValue() != 0)
            throw new RuntimeException("GS command not succeeded");

        if (result.exists()) {
            DAFile daf = new DAFile(object.getNameOfLatestBRep(),
                    StringUtilities.slashize(ci.getTarget_folder()) + result.getName());
            logger.debug("new dafile:" + daf);
            // TODO: we don't do anything if validation fails!
            boolean pdfa = PdfService.validatePdfA(wa.toFile(daf));
            Event e = new Event();
            e.setType("CONVERT");
            e.setDetail(StringUtilities.createString(commandAsArray) + " PDFA1/b Validation (pdfbox): " + pdfa);
            e.setSource_file(ci.getSource_file());
            e.setTarget_file(daf);
            e.setDate(new Date());

            results.add(e);
        } else
            logger.error(result.getAbsolutePath() + " does not exist");
        return results;

    }

    /**
     * Generate target file path.
     *
     * @param ci the ci
     * @return the string
     */
    public String generateTargetFilePath(WorkArea wa, ConversionInstruction ci) {
        String input = wa.toFile(ci.getSource_file()).getAbsolutePath();
        return wa.dataPath() + "/" + object.getNameOfLatestBRep() + "/"
                + StringUtilities.slashize(ci.getTarget_folder()) + FilenameUtils.getBaseName(input) + "."
                + ci.getConversion_routine().getTarget_suffix();
    }

    /* (non-Javadoc)
     * @see de.uzk.hki.da.convert.ConversionStrategy#setParam(java.lang.String)
     */
    @Override
    public void setParam(String param) {
    }

    /* (non-Javadoc)
     * @see de.uzk.hki.da.convert.ConversionStrategy#setCLIConnector(de.uzk.hki.da.convert.CLIConnector)
     */
    @Override
    public void setCLIConnector(CommandLineConnector cliConnector) {
        this.cliConnector = cliConnector;
    }

    /* (non-Javadoc)
     * @see de.uzk.hki.da.convert.ConversionStrategy#setObject(de.uzk.hki.da.model.Object)
     */
    @Override
    public void setObject(Object obj) {
        this.object = obj;
    }

    @Override
    public void setPruneErrorOrWarnings(boolean prune) {
        // TODO Auto-generated method stub

    }

    @Override
    public void setKnownFormatCommandLineErrors(KnownFormatCmdLineErrors knownErrors) {
    }

}