From ade592d842b1880b7f01b1c6ad4b382569d67014 Mon Sep 17 00:00:00 2001
From: knowcenter <knowcenter@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Fri, 2 Mar 2007 08:25:07 +0000
Subject: now its posible to calculate pagelength of arbitrary page

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@40 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 .../knowcenter/wag/egov/egiz/pdf/PDFUtilities.java | 38 ++++++++++++++++++++++
 1 file changed, 38 insertions(+)

diff --git a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/PDFUtilities.java b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/PDFUtilities.java
index 05854dd..5384a8c 100644
--- a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/PDFUtilities.java
+++ b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/PDFUtilities.java
@@ -35,9 +35,47 @@ import com.lowagie.text.DocumentException;
  * Contains useful helpers for accessing PDF documents.
  * 
  * @author wprinz
+ * @author mruhmer
  */
 public abstract class PDFUtilities
 {
+	  public static float calculatePageLength(final byte[] pdf,int page ,float footer_line) throws PDFDocumentException
+	  {
+	    try
+	    {
+	      ByteArrayInputStream original_bais = new ByteArrayInputStream(pdf);
+	      byte [] normalized_pdf = TextualSignature.normalizePDF(original_bais);
+	      
+	      ByteArrayInputStream bais = new ByteArrayInputStream(normalized_pdf);
+
+	      PDFParser parser = new PDFParser(bais);
+	      File temporary_dir = SettingsReader.getTemporaryDirectory();
+	      parser.setTempDirectory(temporary_dir);
+	      parser.parse();
+
+	      PDDocument pdfDocument_ = parser.getPDDocument();
+	      float page_length = calculatePageLength(pdfDocument_,page , footer_line);
+	      pdfDocument_.close();
+	      return page_length;
+	    }
+	    catch (IOException e)
+	    {
+	      throw new PDFDocumentException(201, e);
+	    }
+	    catch (DocumentException e)
+	    {
+	      throw new PDFDocumentException(201, e);
+	    }
+	  }	
+	  public static float calculatePageLength(PDDocument document,int page ,float footer_line) throws IOException
+	  {
+	    //int last_page_id = document.getNumberOfPages();
+	    List allPages = document.getDocumentCatalog().getAllPages();
+	    PDPage pdpage = (PDPage) allPages.get(page);
+
+	    return calculatePageLength(pdpage, footer_line);
+	  }	
+	
   public static float calculateLastPageLength(final byte[] pdf, float footer_line) throws PDFDocumentException
   {
     try
-- 
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