diff options
Diffstat (limited to 'pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/pdf/PDFUtilities.java')
| -rw-r--r-- | pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/pdf/PDFUtilities.java | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/pdf/PDFUtilities.java b/pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/pdf/PDFUtilities.java new file mode 100644 index 0000000..e2a3d06 --- /dev/null +++ b/pdf-as-lib/src/main/java/at/knowcenter/wag/egov/egiz/pdf/PDFUtilities.java @@ -0,0 +1,148 @@ +/**
+ * <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.
+ *
+ * $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 at.gv.egiz.pdfas.framework.input.PdfDataSource;
+import at.gv.egiz.pdfas.impl.input.ByteArrayPdfDataSourceImpl;
+
+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
+ * @author mruhmer
+ */
+public abstract class PDFUtilities
+{
+ public static float calculatePageLength(final PdfDataSource pdfDataSource,int page ,float footer_line, int pagerotation) throws PDFDocumentException
+ {
+ try
+ {
+ //ByteArrayInputStream original_bais = new ByteArrayInputStream(pdf);
+ //byte [] normalized_pdf = TextualSignature.normalizePDF(original_bais);
+ byte [] normalized_pdf = TextualSignature.normalizePDF(pdfDataSource);
+
+ // PERF: The whole PDF normalization process is costy
+ 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, pagerotation);
+ 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, int pagerotation) throws IOException
+ {
+ //int last_page_id = document.getNumberOfPages();
+ List allPages = document.getDocumentCatalog().getAllPages();
+ PDPage pdpage = (PDPage) allPages.get(page);
+ pdpage.setRotation(pagerotation);
+ return calculatePageLength(pdpage, footer_line);
+ }
+
+ /**
+ * @deprecated
+ * @param pdf
+ * @param footer_line
+ * @return
+ * @throws PDFDocumentException
+ */
+ public static float calculateLastPageLength(final byte[] pdf, float footer_line) throws PDFDocumentException
+ {
+ try
+ {
+ //ByteArrayInputStream original_bais = new ByteArrayInputStream(pdf);
+ PdfDataSource dataSource = new ByteArrayPdfDataSourceImpl(pdf);
+ byte [] normalized_pdf = TextualSignature.normalizePDF(dataSource);
+
+ 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_, footer_line);
+ 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, float footer_line) 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, footer_line);
+ }
+
+ public static float calculatePageLength(PDPage page, float footer_line) throws IOException
+ {
+ // logger_.debug("Last Page id:" + last_page_id);
+ // PDPage last_page = (PDPage) allPages.get(0);
+ PDFPage my_page = new PDFPage(footer_line);
+ my_page.processStream(page, page.findResources(), page.getContents().getStream());
+ return my_page.getMaxPageLength();
+ }
+
+}
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