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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.utils;
+
+/**
+ * PDF/A utility class
+ * @author dferbas
+ *
+ */
+public class PdfAUtil {
+ /**
+ * dferbas: Text representation of pdfa version string
+ */
+ private static final String PDFA_PREFIX = "ISO 19005-1:2005 PDF/A-";
+ /**
+ * Extract pdfa version from pdf metadata
+ * @param pdfMetadata
+ * @return
+ */
+ public static String findPdfAVersion(String pdfMetadata) {
+
+ String inf = pdfMetadata;
+ String pdfaNsMark = "http://www.aiim.org/pdfa/ns/id/";
+ String partMark = "<pdfaid:part>";
+ String confMark = "<pdfaid:conformance>";
+ int pdfaI = inf.indexOf(pdfaNsMark);
+
+ if (pdfaI > -1) {
+ int part = inf.indexOf(partMark);
+ StringBuffer version = new StringBuffer(PDFA_PREFIX);
+ part = part + partMark.length();
+ version.append(inf.substring(part, part + 1));
+ int conf = inf.indexOf(confMark);
+
+ conf = conf + confMark.length();
+ version.append(inf.substring(conf, conf + 1).toLowerCase());
+
+ return version.toString();
+ } else {
+ return null;
+
+ }
+ }
+
+}