1 files changed, 92 insertions, 0 deletions
diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/impl/input/IncrementalUpdateParser.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/impl/input/IncrementalUpdateParser.java
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+++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/impl/input/IncrementalUpdateParser.java
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+/**
+ * <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.impl.input;
+
+import java.util.List;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import at.gv.egiz.pdfas.exceptions.ErrorCode;
+import at.gv.egiz.pdfas.framework.input.PdfDataSource;
+import at.gv.egiz.pdfas.framework.input.PdfDataSourceHolder;
+import at.gv.egiz.pdfas.framework.input.correction.Corrector;
+import at.gv.egiz.pdfas.framework.input.correction.CorrectorFactory;
+import at.gv.egiz.pdfas.impl.input.helper.DataSourceHelper;
+import at.knowcenter.wag.egov.egiz.cfg.SettingsReader;
+import at.knowcenter.wag.egov.egiz.exceptions.PDFDocumentException;
+import at.knowcenter.wag.exactparser.ParseDocument;
+
+/**
+ * Parses the given PDF document into a list of Incremental Update blocks.
+ * @author wprinz
+ */
+public class IncrementalUpdateParser
+{
+  /**
+   * The log.
+   */
+  private static final Log log = LogFactory.getLog(IncrementalUpdateParser.class);
+  
+  public static List parsePdfIntoIUBlocks (PdfDataSourceHolder pdfDataSource) throws PDFDocumentException
+  {
+    log.trace("parsePdfIntoIUBlocks:");
+    
+    List blocks = null;
+    try
+    {
+      byte [] pdf = DataSourceHelper.convertDataSourceToByteArray(pdfDataSource.getDataSource());
+      blocks = ParseDocument.parseDocument(pdf);
+    }
+    catch (Exception e)  {
+       try {
+          log.debug("Error while parsing Document.", e);
+          boolean tryToCorrect = SettingsReader.getInstance().getSetting("correct_document_on_verify_if_necessary", "false").equals("true");
+          if (tryToCorrect) {
+             log.info("Correcting document...");
+             Corrector cor = CorrectorFactory.createCorrector();
+             PdfDataSource correctedDS = cor.correctDocument(pdfDataSource.getDataSource());
+             log.info("Correction finished.");
+             byte [] pdf = DataSourceHelper.convertDataSourceToByteArray(correctedDS);
+             blocks = ParseDocument.parseDocument(pdf);
+             pdfDataSource.setDataSource(correctedDS);
+          } else {
+             makeError(e);
+          }
+
+      } catch (Exception e1) {
+         makeError(e);
+      }
+    }
+
+    log.trace("parsePdfIntoIUBlocks finished.");
+    return blocks;
+  }
+
+   private static void makeError(Exception e) throws PDFDocumentException {
+      log.error("Error while parsing Document into IU blocks.", e);
+      throw new PDFDocumentException(ErrorCode.DOCUMENT_CANNOT_BE_READ, e);
+   }
+  
+}