pdf-as-lib maven project files moved to pdf-as-lib

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/pdf-as/trunk@926 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c

1 files changed, 0 insertions, 350 deletions

diff --git a/src/main/java/at/gv/egiz/pdfas/placeholder/SignaturePlaceholderExtractor.java b/src/main/java/at/gv/egiz/pdfas/placeholder/SignaturePlaceholderExtractor.java
deleted file mode 100644
index 8abe516..0000000
--- a/src/main/java/at/gv/egiz/pdfas/placeholder/SignaturePlaceholderExtractor.java
+++ /dev/null
@@ -1,350 +0,0 @@
-/**

- * <copyright> Copyright 2006 by Know-Center, Graz, Austria </copyright>

- * PDF-AS has been contracted by the E-Government Innovation Center EGIZ, a

- * joint initiative of the Federal Chancellery Austria and Graz University of

- * Technology.

- *

- * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by

- * the European Commission - subsequent versions of the EUPL (the "Licence");

- * You may not use this work except in compliance with the Licence.

- * You may obtain a copy of the Licence at:

- * http://www.osor.eu/eupl/

- *

- * Unless required by applicable law or agreed to in writing, software

- * distributed under the Licence is distributed on an "AS IS" basis,

- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

- * See the Licence for the specific language governing permissions and

- * limitations under the Licence.

- *

- * This product combines work with different licenses. See the "NOTICE" text

- * file for details on the various modules and licenses.

- * The "NOTICE" text file is part of the distribution. Any derivative works

- * that you distribute must include a readable copy of the "NOTICE" text file.

- */

-package at.gv.egiz.pdfas.placeholder;

-

-import java.awt.geom.AffineTransform;

-import java.awt.geom.NoninvertibleTransformException;

-import java.awt.image.BufferedImage;

-import java.io.IOException;

-import java.io.InputStream;

-import java.util.Hashtable;

-import java.util.Iterator;

-import java.util.List;

-import java.util.Map;

-import java.util.Vector;

-

-import org.apache.commons.logging.Log;

-import org.apache.commons.logging.LogFactory;

-import org.apache.pdfbox.cos.COSName;

-import org.apache.pdfbox.exceptions.WrappedIOException;

-import org.apache.pdfbox.pdmodel.PDDocument;

-import org.apache.pdfbox.pdmodel.PDPage;

-import org.apache.pdfbox.pdmodel.graphics.xobject.PDXObject;

-import org.apache.pdfbox.pdmodel.graphics.xobject.PDXObjectImage;

-import org.apache.pdfbox.util.Matrix;

-import org.apache.pdfbox.util.PDFOperator;

-import org.apache.pdfbox.util.PDFStreamEngine;

-import org.apache.pdfbox.util.ResourceLoader;

-

-import at.gv.egiz.pdfas.api.commons.Constants;

-import at.gv.egiz.pdfas.exceptions.ErrorCode;

-import at.gv.egiz.pdfas.exceptions.framework.PlaceholderExtractionException;

-import at.gv.egiz.pdfas.utils.PDFASUtils;

-import at.knowcenter.wag.egov.egiz.exceptions.PDFDocumentException;

-import at.knowcenter.wag.egov.egiz.pdf.TablePos;

-

-import com.google.zxing.BarcodeFormat;

-import com.google.zxing.BinaryBitmap;

-import com.google.zxing.DecodeHintType;

-import com.google.zxing.LuminanceSource;

-import com.google.zxing.MultiFormatReader;

-import com.google.zxing.NotFoundException;

-import com.google.zxing.ReaderException;

-import com.google.zxing.Result;

-import com.google.zxing.client.j2se.BufferedImageLuminanceSource;

-import com.google.zxing.common.HybridBinarizer;

-

-//////

-

-

-

-/**

- * Extract all relevant information from a placeholder image.

- * 

- * @author exthex

- *

- */

-public class SignaturePlaceholderExtractor extends PDFStreamEngine {

-   /**

-    * The log.

-    */

-   private static Log log = LogFactory.getLog(SignaturePlaceholderExtractor.class);

-   

-   private List placeholders = new Vector();

-   private int currentPage = 0;

-   

-   private SignaturePlaceholderExtractor(String placeholderId, int placeholderMatchMode) throws IOException {

-      super(ResourceLoader.loadProperties("at/gv/egiz/pdfas/placeholder/pdfbox-reader.properties",

-            true));

-   }

-

-   /**

-    * Search the document for placeholder images and possibly included

-    * additional info.<br/>

-    * Searches only for the first placeholder page after page from top.

-    * 

-    * @param inputStream

-    * @return all available info from the first found placeholder.

-    * @throws PDFDocumentException if the document could not be read.

-    * @throws PlaceholderExtractionException if STRICT matching mode was requested and no suitable placeholder could be found.

-    */

-   public static SignaturePlaceholderData extract(InputStream inputStream, String placeholderId, int matchMode)

-         throws PDFDocumentException, PlaceholderExtractionException {

-      SignaturePlaceholderContext.setSignaturePlaceholderData(null);

-      PDDocument doc = null;

-      try 

-      {

-         try {

-            doc = PDDocument.load(inputStream);

-         } catch (IOException e) {

-            throw new PDFDocumentException(ErrorCode.DOCUMENT_CANNOT_BE_READ, e);

-         }

-         PDFASUtils.checkDocumentPermissions(doc);

-         SignaturePlaceholderExtractor extractor;

-         try

-         {

-            extractor = new SignaturePlaceholderExtractor(placeholderId, matchMode);

-         } catch (IOException e2) {

-            throw new PDFDocumentException(ErrorCode.DOCUMENT_CANNOT_BE_READ, e2);

-         }

-         List pages = doc.getDocumentCatalog().getAllPages();

-         Iterator iter = pages.iterator();

-         int pageNr = 0;

-         while (iter.hasNext()) {

-            pageNr++;

-            PDPage page = (PDPage) iter.next();

-            try {

-               extractor.setCurrentPage(pageNr);

-               extractor.processStream( page, page.findResources(), page.getContents().getStream() );

-               SignaturePlaceholderData ret = matchPlaceholderPage(extractor.placeholders, placeholderId, matchMode);

-               if (ret != null){

-            	   SignaturePlaceholderContext.setSignaturePlaceholderData(ret);

-                  return ret;

-               }

-            } catch (IOException e1) {

-            	throw new PDFDocumentException(ErrorCode.DOCUMENT_CANNOT_BE_READ, e1);

-            }

-   

-         }

-         if (extractor.placeholders.size() > 0){

-        	SignaturePlaceholderData ret = matchPlaceholderDocument(extractor.placeholders, placeholderId, matchMode);

-            SignaturePlaceholderContext.setSignaturePlaceholderData(ret);

-            return ret;

-         }

-         // no placeholders found, apply strict mode if set

-         if (matchMode == Constants.PLACEHOLDER_MATCH_MODE_STRICT) {

-            throw new PlaceholderExtractionException(ErrorCode.SIGNATURE_PLACEHOLDER_EXTRACTION_FAILED, "no suitable placeholder found and STRICT matching mode requested.");

-         }

-         

-         return null;

-      } finally {

-         if (doc != null)

-            try {

-               doc.close();

-            } catch (IOException e) {

-               log.debug("Could not close document.", e);

-            }

-      }

-

-   }

-   

-   private static SignaturePlaceholderData matchPlaceholderDocument(

-         List placeholders, String placeholderId, int matchMode) throws PlaceholderExtractionException {

-      

-      if (matchMode == Constants.PLACEHOLDER_MATCH_MODE_STRICT)

-         throw new PlaceholderExtractionException(ErrorCode.SIGNATURE_PLACEHOLDER_EXTRACTION_FAILED, "no suitable placeholder found and STRICT matching mode requested.");

-      

-      if (placeholders.size() == 0)

-         return null;

-      

-      for (int i = 0; i < placeholders.size(); i++)

-      {

-         SignaturePlaceholderData spd = (SignaturePlaceholderData)placeholders.get(i);

-         if (spd.getId() == null)

-            return spd;

-      }

-      

-      if (matchMode == Constants.PLACEHOLDER_MATCH_MODE_LENIENT)

-         return (SignaturePlaceholderData)placeholders.get(0);

-

-      return null;

-   }

-

-   private static SignaturePlaceholderData matchPlaceholderPage(List placeholders,

-         String placeholderId, int matchMode) {

-      if (placeholders.size() == 0)

-         return null;

-      for (int i = 0; i < placeholders.size(); i++)

-      {

-         SignaturePlaceholderData data = (SignaturePlaceholderData)placeholders.get(i);

-         if (placeholderId != null && placeholderId.equals(data.getId()))

-            return data;

-         if (placeholderId == null && data.getId() == null)

-            return data;

-      }

-      return null;

-   }

-

-   private void setCurrentPage(int pageNr) {

-      this.currentPage = pageNr;

-   }

-

-   protected void processOperator( PDFOperator operator, List arguments ) throws IOException

-   {

-	   String operation = operator.getOperation();

-	  if( operation.equals( "Do" ) )

-       {

-		   COSName objectName = (COSName)arguments.get( 0 );

-           Map xobjects = getResources().getXObjects();

-           PDXObject xobject = (PDXObject)xobjects.get( objectName.getName() );

-           if( xobject instanceof PDXObjectImage )

-           {

-        	   try

-               {

-                   PDXObjectImage image = (PDXObjectImage)xobject;

-                   SignaturePlaceholderData data = checkImage(image);

-                   if (data != null)

-                   {

-                      PDPage page = getCurrentPage();

-                      Matrix ctm = getGraphicsState().getCurrentTransformationMatrix();

-                      double rotationInRadians = (page.findRotation() * Math.PI)/180;

-   

-                      AffineTransform rotation = new AffineTransform();

-                      rotation.setToRotation( rotationInRadians );

-                      AffineTransform rotationInverse = rotation.createInverse();

-                      Matrix rotationInverseMatrix = new Matrix();

-                      rotationInverseMatrix.setFromAffineTransform( rotationInverse );

-                      Matrix rotationMatrix = new Matrix();

-                      rotationMatrix.setFromAffineTransform( rotation );

-   

-                      Matrix unrotatedCTM = ctm.multiply( rotationInverseMatrix );

-   

-                      float x = unrotatedCTM.getXPosition();

-                      float y = unrotatedCTM.getYPosition() + unrotatedCTM.getYScale();

-                      float w = unrotatedCTM.getXScale();

-                      

-                      String posString = "p:" + currentPage + ";x:" + x + ";y:" + y + ";w:" + w;

-                      try

-                      {

-                         data.setTablePos(new TablePos(posString));

-                         data.setPlaceholderName(objectName.getName());

-                         placeholders.add(data);

-                      } catch (PDFDocumentException e) {

-                         throw new WrappedIOException(e);

-                      }

-                   }

-               }

-               catch( NoninvertibleTransformException e )

-               {

-                   throw new WrappedIOException( e );

-               }

-           }

-       }

-       else

-       {

-    	   super.processOperator( operator, arguments );

-       }

-   }

-

-   /**

-    * Checks an image if it is a placeholder for a signature.

-    * 

-    * @param image

-    * @return

-    * @throws IOException

-    */

-   private SignaturePlaceholderData checkImage(PDXObjectImage image) throws IOException {

-	  BufferedImage bimg = image.getRGBImage();

-      if (bimg == null) {

-         String type = image.getSuffix();

-         if (type != null) {

-            type = type.toUpperCase() + " images";

-         } else {

-            type = "Image type";

-         }

-         log.info("Unable to extract image for QRCode analysis. " + type + " not supported. Add additional JAI Image filters to your classpath. Refer to https://jai.dev.java.net. Skipping image.");

-         return null;

-      }

-      if(bimg.getHeight() < 10 || bimg.getWidth() < 10) {

-         log.debug("Image too small for QRCode. Skipping image.");

-         return null;

-      }

-

-      LuminanceSource source = new BufferedImageLuminanceSource(bimg);

-      BinaryBitmap bitmap = new BinaryBitmap(new HybridBinarizer(source));

-      Result result;

-      long before = System.currentTimeMillis();

-      try {

-    	 Hashtable hints = new Hashtable();

-         Vector formats = new Vector();

-         formats.add(BarcodeFormat.QR_CODE);

-         hints.put(DecodeHintType.POSSIBLE_FORMATS, formats);

-         result = new MultiFormatReader().decode(bitmap, hints);

-         

-         String text = result.getText();

-         String profile = null;

-         String type = null;

-         String sigKey = null;

-         String id = null;

-         if (text != null) {

-            if (text.startsWith(Constants.QR_PLACEHOLDER_IDENTIFIER)) {

-               String[] data = text.split(";");

-               if (data.length > 1) {

-            	  for (int i = 1; i < data.length; i++) {

-                     String kvPair = data[i];

-                     String[] kv = kvPair.split("=");

-                     if (kv.length != 2) {

-                        log.debug("Invalid parameter in placeholder data: " + kvPair);

-                     } else {

-                        if (kv[0].equalsIgnoreCase(SignaturePlaceholderData.ID_KEY)) {

-                           id = kv[1];

-                        } else if (kv[0].equalsIgnoreCase(SignaturePlaceholderData.PROFILE_KEY)) {

-                           profile = kv[1];

-                        } else if (kv[0]

-                              .equalsIgnoreCase(SignaturePlaceholderData.SIG_KEY_KEY)) {

-                           sigKey = kv[1];

-                        } else if (kv[0]

-                              .equalsIgnoreCase(SignaturePlaceholderData.TYPE_KEY)) {

-                           type = kv[1];

-                        }

-                     }

-                  }

-               }

-               return new SignaturePlaceholderData(profile, type, sigKey, id);

-            } else {

-               log.warn("QR-Code found but does not start with \"" + Constants.QR_PLACEHOLDER_IDENTIFIER + "\". Ignoring QR placeholder.");

-            }

-         }

-      } catch (ReaderException re) {

-    	  re.printStackTrace();

-         if (log.isDebugEnabled()) {

-            log.debug("Could not decode - not a placeholder. needed: "

-                  + (System.currentTimeMillis() - before));

-         }

-         if (!(re instanceof NotFoundException)){

-            if (log.isInfoEnabled()) {

-               log.info("Failed to decode image", re);

-            }

-         }

-      } catch(ArrayIndexOutOfBoundsException e){

-         if (log.isInfoEnabled()) {

-            log.info("Failed to decode image. Probably a zxing bug", e);

-         }

-      }

-      return null;

-   }

-

-}

-

-