From 6025b6016517c6d898d8957d1d7e03ba71431912 Mon Sep 17 00:00:00 2001
From: tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Fri, 1 Dec 2006 12:20:24 +0000
Subject: Initial import of release 2.2.

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@4 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 .../knowcenter/wag/egov/egiz/pdf/PDFUtilities.java | 89 ++++++++++++++++++++++
 1 file changed, 89 insertions(+)
 create mode 100644 src/main/java/at/knowcenter/wag/egov/egiz/pdf/PDFUtilities.java

(limited to 'src/main/java/at/knowcenter/wag/egov/egiz/pdf/PDFUtilities.java')

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
new file mode 100644
index 0000000..8fa3b35
--- /dev/null
+++ b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/PDFUtilities.java
@@ -0,0 +1,89 @@
+/**
+ * <copyright> Copyright (c) 2006 by Know-Center, Graz, Austria </copyright>
+ * 
+ * This software is the confidential and proprietary information of Know-Center,
+ * Graz, Austria. You shall not disclose such Confidential Information and shall
+ * use it only in accordance with the terms of the license agreement you entered
+ * into with Know-Center.
+ * 
+ * KNOW-CENTER MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
+ * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR
+ * NON-INFRINGEMENT. KNOW-CENTER SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY
+ * LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
+ * DERIVATIVES.
+ * 
+ * $Id: PDFUtilities.java,v 1.3 2006/10/31 08:09:33 wprinz Exp $
+ */
+package at.knowcenter.wag.egov.egiz.pdf;
+
+import java.io.ByteArrayInputStream;
+import java.io.File;
+import java.io.IOException;
+import java.util.List;
+
+import org.pdfbox.pdfparser.PDFParser;
+import org.pdfbox.pdmodel.PDDocument;
+import org.pdfbox.pdmodel.PDPage;
+
+import at.knowcenter.wag.egov.egiz.cfg.SettingsReader;
+import at.knowcenter.wag.egov.egiz.exceptions.PDFDocumentException;
+
+import com.lowagie.text.DocumentException;
+
+/**
+ * Contains useful helpers for accessing PDF documents.
+ * 
+ * @author wprinz
+ */
+public abstract class PDFUtilities
+{
+  public static float calculateLastPageLength(final byte[] pdf) 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 last_page_length = calculateLastPageLength(pdfDocument_);
+      pdfDocument_.close();
+
+      return last_page_length;
+    }
+    catch (IOException e)
+    {
+      throw new PDFDocumentException(201, e);
+    }
+    catch (DocumentException e)
+    {
+      throw new PDFDocumentException(201, e);
+    }
+  }
+
+  public static float calculateLastPageLength(PDDocument document) throws IOException
+  {
+    int last_page_id = document.getNumberOfPages();
+    List allPages = document.getDocumentCatalog().getAllPages();
+    PDPage last_page = (PDPage) allPages.get(last_page_id - 1);
+
+    return calculatePageLength(last_page);
+  }
+
+  public static float calculatePageLength(PDPage page) throws IOException
+  {
+    // logger_.debug("Last Page id:" + last_page_id);
+    // PDPage last_page = (PDPage) allPages.get(0);
+    PDFPage my_page = new PDFPage();
+    my_page.processStream(page, page.findResources(), page.getContents().getStream());
+    return my_page.getMaxPageLength();
+  }
+
+}
-- 
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