org.opencps.util.PDFUtil.java Source code

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Here is the source code for org.opencps.util.PDFUtil.java

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/**
* OpenCPS is the open source Core Public Services software
* Copyright (C) 2016-present OpenCPS community
    
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* 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 Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*/

package org.opencps.util;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.repository.model.FileEntry;
import com.liferay.portal.kernel.util.StringPool;

/**
 * @author trungnt
 */
public class PDFUtil {

    public static String saveAsPdf(String dest, long fileEntryId) throws IOException {

        InputStream is = null;
        OutputStream os = null;
        String imagePath = StringPool.BLANK;
        try {

            FileEntry fileEntry = DLFileEntryUtil.getFileEntry(fileEntryId);
            if (fileEntry == null) {
                return StringPool.BLANK;
            }

            if (!fileEntry.getExtension().equals("pdf")) {
                return StringPool.BLANK;
            }

            is = fileEntry.getContentStream();

            imagePath = dest + fileEntry.getTitle() + StringPool.DASH + System.currentTimeMillis() + "_tmp."
                    + fileEntry.getExtension();

            os = new FileOutputStream(imagePath);

            byte[] b = new byte[1024];
            int length;

            while ((length = is.read(b)) != -1) {
                os.write(b, 0, length);
            }
        } catch (Exception e) {
            _log.error(e);
        } finally {
            if (is != null) {
                is.close();
            }
            if (os != null) {
                os.close();
            }
        }
        return imagePath;
    }

    private static Log _log = LogFactoryUtil.getLog(PDFUtil.class);
}