eu.europa.esig.dss.pdf.DSSPDFUtils.java Source code

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Here is the source code for eu.europa.esig.dss.pdf.DSSPDFUtils.java

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/**
 * DSS - Digital Signature Services
 * Copyright (C) 2015 European Commission, provided under the CEF programme
 *
 * This file is part of the "DSS - Digital Signature Services" project.
 *
 * 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; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * 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
 */
package eu.europa.esig.dss.pdf;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import org.apache.commons.io.IOUtils;

import eu.europa.esig.dss.DSSException;

/**
 * This class proposes some utility methods to manipulate PDF files.
 *
 */
public final class DSSPDFUtils {

    private DSSPDFUtils() {
    }

    /**
     * This method returns the temporary {@code File} with the provided contents.
     *
     * @param pdfData {@code InputStream} representing the contents of the returned {@code File}
     * @return {@code File} with the given contents
     * @throws DSSException in case of any {@code IOException}
     */
    public static File getFileFromPdfData(final InputStream pdfData) throws DSSException {

        FileOutputStream fileOutputStream = null;
        try {

            final File file = File.createTempFile("sd-dss-", ".pdf");
            fileOutputStream = new FileOutputStream(file);
            IOUtils.copy(pdfData, fileOutputStream);
            return file;
        } catch (IOException e) {
            throw new DSSException("The process has no rights to write or to access 'java.io.tmpdir': "
                    + System.getProperty("java.io.tmpdir"), e);
        } finally {
            IOUtils.closeQuietly(pdfData);
            IOUtils.closeQuietly(fileOutputStream);
        }
    }

    /**
     *
     *
     * @param toSignFile
     * @param signedFile
     * @return
     * @throws DSSException
     */
    public static FileOutputStream getFileOutputStream(final File toSignFile, final File signedFile)
            throws DSSException {

        FileInputStream fileInputStream = null;
        try {

            final FileOutputStream fileOutputStream = new FileOutputStream(signedFile);
            fileInputStream = new FileInputStream(toSignFile);
            IOUtils.copy(fileInputStream, fileOutputStream);
            return fileOutputStream;
        } catch (IOException e) {
            IOUtils.closeQuietly(fileInputStream);
            throw new DSSException(e);
        }
    }

}