1 files changed, 141 insertions, 0 deletions
diff --git a/simpleSigning/src/main/java/at/gv/egiz/simpleSigning/helper/PDFHelper.java b/simpleSigning/src/main/java/at/gv/egiz/simpleSigning/helper/PDFHelper.java
new file mode 100644
index 0000000..9c94dac
--- /dev/null
+++ b/simpleSigning/src/main/java/at/gv/egiz/simpleSigning/helper/PDFHelper.java
@@ -0,0 +1,141 @@
+package at.gv.egiz.simpleSigning.helper;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.lowagie.text.Document;
+import com.lowagie.text.PageSize;
+import com.lowagie.text.Paragraph;
+import com.lowagie.text.pdf.PdfWriter;
+
+import at.gv.egiz.simpleSigning.ErrorSignature;
+
+public class PDFHelper {
+
+	private static final Logger logger = LoggerFactory
+			.getLogger(PDFHelper.class);
+
+	private static byte[] createPDFiText(String text) {
+		try {
+			Document document = new Document(PageSize.A4, 36, 72, 108, 180);
+			ByteArrayOutputStream baos = new ByteArrayOutputStream();
+	        PdfWriter.getInstance(document,baos);
+	        document.open();
+	        document.add(new Paragraph(text));
+	        System.out.println("Text is inserted into pdf file");
+	        document.close();
+	        baos.close();
+	        return baos.toByteArray();
+		} catch(Throwable e) {
+			logger.error("Failed to create PDF", e);
+		}
+		return null;
+	}
+	
+	/*
+	private static byte[] createPDFPdfBox(String text) {
+
+		PDDocument document = null;
+		
+		try {
+			// Create a document and add a page to it
+			document = new PDDocument();
+			PDPage page = new PDPage();
+			document.addPage(page);
+
+			PDPageContentStream contentStream = new PDPageContentStream(document, page);
+
+		    PDFont pdfFont = PDType1Font.HELVETICA;
+		    float fontSize = 25;
+		    float leading = 1.5f * fontSize;
+		
+			PDRectangle mediabox = page.findMediaBox();
+		    float margin = 72;
+		    float width = mediabox.getWidth() - 2*margin;
+		    float startX = mediabox.getLowerLeftX() + margin;
+		    float startY = mediabox.getUpperRightY() - margin;
+
+		    List<String> lines = new ArrayList<String>();
+		    int lastSpace = -1;
+		    while (text.length() > 0)
+		    {
+		        int spaceIndex = text.indexOf(' ', lastSpace + 1);
+		        if (spaceIndex < 0)
+		        {
+		            lines.add(text);
+		            text = "";
+		        }
+		        else
+		        {
+		            String subString = text.substring(0, spaceIndex);
+		            float size = fontSize * pdfFont.getStringWidth(subString) / 1000;
+		            if (size > width)
+		            {
+		                if (lastSpace < 0) // So we have a word longer than the line... draw it anyways
+		                    lastSpace = spaceIndex;
+		                subString = text.substring(0, lastSpace);
+		                lines.add(subString);
+		                text = text.substring(lastSpace).trim();
+		                lastSpace = -1;
+		            }
+		            else
+		            {
+		                lastSpace = spaceIndex;
+		            }
+		        }
+		    }
+
+		    contentStream.beginText();
+		    contentStream.setFont(pdfFont, fontSize);
+		    contentStream.moveTextPositionByAmount(startX, startY);            
+		    for (String line: lines)
+		    {
+		        contentStream.drawString(line);
+		        contentStream.moveTextPositionByAmount(0, -leading);
+		    }
+		    contentStream.endText(); 
+			
+			
+
+			// Make sure that the content stream is closed:
+			contentStream.close();
+			
+			ByteArrayOutputStream baos = new ByteArrayOutputStream();
+			// Save the results and ensure that the document is properly closed:
+			document.save(baos);
+			
+			return baos.toByteArray();
+		} catch (Throwable e) {
+			logger.error("Failed to create PDF", e);
+		} finally {
+			if(document != null) {
+				try {
+					document.close();
+				} catch (Throwable e) {
+					logger.error("Failed to close PDF", e);
+				}
+			}
+		}
+		return null;
+	}
+	*/
+	public static byte[] createPDFDocument(String text) {
+		return createPDFiText(text);
+	}
+
+	public static void toError(HttpServletRequest req,
+			HttpServletResponse resp, String error, String cause)
+			throws ServletException, IOException {
+		req.setAttribute(ErrorSignature.PARAM_ERROR, error);
+		req.setAttribute(ErrorSignature.PARAM_CAUSE, cause);
+		req.getRequestDispatcher("Error").forward(req, resp);
+	}
+
+}