From db52e4d66d60184d53a27ba4d6772461daacc03d Mon Sep 17 00:00:00 2001
From: tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c>
Date: Fri, 22 Mar 2013 08:57:51 +0000
Subject: Maintenance update (bugfixes, new features, cleanup...) Refer to
 /dok/RELEASE_NOTES-3.3.txt for further information.

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/pdf-as/trunk@931 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
---
 .../main/java/at/gv/egiz/pdfas/utils/CsvUtils.java | 82 ++++++++++++++++++++++
 1 file changed, 82 insertions(+)
 create mode 100644 pdf-as-lib/src/main/java/at/gv/egiz/pdfas/utils/CsvUtils.java

(limited to 'pdf-as-lib/src/main/java/at/gv/egiz/pdfas/utils/CsvUtils.java')

diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/utils/CsvUtils.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/utils/CsvUtils.java
new file mode 100644
index 0000000..a78da93
--- /dev/null
+++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/utils/CsvUtils.java
@@ -0,0 +1,82 @@
+/**
+ * <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;
+
+import org.apache.commons.lang.StringUtils;
+
+/**
+ * Methods in order to create valid delimiter separated data, where the semicolon as used as delimiter, also known as
+ * the German version of CSV.
+ *
+ * @author Datentechnik Innovation GmbH
+ * @see <a href="http://tools.ietf.org/html/rfc4180">RFC 4180</a>
+ */
+public class CsvUtils {
+
+	/**
+	 * The delimiter char used instead of COMMA.
+	 */
+	public static final char DEFAULT_DELIMITER = ';';
+
+	private static final char QUOTE_CHAR = '"';
+	private static final char LF_CHAR = '\n';
+	private static final char CR_CHAR = '\r';
+
+	private static final char[] SHOULD_BE_QUOTED = { LF_CHAR, CR_CHAR, DEFAULT_DELIMITER, QUOTE_CHAR };
+	private static final String CSV_QUOTE = String.valueOf(QUOTE_CHAR);
+
+	/**
+	 * Returns an DSV escapted representation of the given object using the default delimiter character (
+	 * {@link #DEFAULT_DELIMITER}).
+	 *
+	 * @param obj
+	 *            The object.
+	 * @return An escapted representation of the given object.
+	 */
+	public static String escapeCsvValue(Object obj) {
+		// null value should be printed as empty column
+		if (obj == null) {
+			return "";
+		}
+		// get String representation of object
+		String asString = String.valueOf(obj);
+		// do we need to escape anything?
+		if (StringUtils.containsNone(asString, SHOULD_BE_QUOTED)) {
+			return asString;
+		}
+
+		// RFC 4180 (7): If double-quotes are used to enclose fields, then a double-quote
+		// appearing inside a field must be escaped by preceding it with
+		// another double quote.
+		asString = StringUtils.replace(asString, CSV_QUOTE, CSV_QUOTE + CSV_QUOTE);
+
+		// RFC 4180 (6): Fields containing line breaks (CRLF), double quotes, and commas
+		// should be enclosed in double-quotes.
+		if (StringUtils.containsAny(asString, SHOULD_BE_QUOTED)) {
+			return QUOTE_CHAR + asString + QUOTE_CHAR;
+		}
+		return asString;
+	}
+
+}
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