/*
* This file is part of rockframework.
*
* rockframework 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.
*
* rockframework 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 br.net.woodstock.rockframework.document.pdf.itextpdf;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import br.net.woodstock.rockframework.core.RockFrameworkVersion;
import br.net.woodstock.rockframework.core.util.Assert;
import br.net.woodstock.rockframework.document.DocumentInput;
import br.net.woodstock.rockframework.document.DocumentOutput;
import br.net.woodstock.rockframework.document.DocumentProcessor;
import br.net.woodstock.rockframework.document.pdf.PDFException;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.PdfCopy;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfReader;
public class CutProcessor implements DocumentProcessor {
private static final long serialVersionUID = RockFrameworkVersion.VERSION;
public static final String SOURCE_PARAMETER = "source";
public static final String START_PARAMETER = "start";
public static final String END_PARAMETER = "end";
public CutProcessor() {
super();
}
@Override
public DocumentOutput process(final DocumentInput input) {
Assert.notNull(input, "input");
try {
Object source = input.getParameter(CutProcessor.SOURCE_PARAMETER);
Integer start = input.getParameter(CutProcessor.START_PARAMETER);
Integer end = input.getParameter(CutProcessor.END_PARAMETER);
if (source == null) {
throw new DocumentException("Parameter 'source' + must be set");
}
if (start == null) {
throw new DocumentException("Parameter 'start' must be set");
}
if (end == null) {
end = Integer.valueOf(0);
}
PdfReader reader = IText.read(source);
Document document = new Document(reader.getPageSizeWithRotation(1));
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
PdfCopy writer = new PdfCopy(document, outputStream);
int pageCount = reader.getNumberOfPages();
if (start.intValue() > pageCount) {
throw new DocumentException("Start page is greater than page count");
}
int endPage = end.intValue();
if ((endPage < 1) || (endPage > pageCount)) {
endPage = pageCount;
}
document.open();
for (int i = start.intValue(); i <= endPage; i++) {
PdfImportedPage page = writer.getImportedPage(reader, i);
writer.addPage(page);
}
document.close();
writer.close();
reader.close();
return new DocumentOutput(new ByteArrayInputStream(outputStream.toByteArray()));
} catch (IOException e) {
throw new PDFException(e);
} catch (DocumentException e) {
throw new PDFException(e);
}
}
}