http://xmlgraphics.apache.org/fop/: Apache FOP (Formatting Objects Processor) is the world's first print formatter driven by XSL formatting objects (XSL-FO) and the world's first output independent formatter. It is a Java application that reads a formatting object (FO) tree and renders the resulting pages to a specified output. Output formats currently supported include PDF, PCL, PS, AFP, TIFF, PNG, SVG, XML (area tree representation), Print, AWT and TXT. The primary output target is PDF. (Apache Software Foundation) 
/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/* $Id: Version.java 1556164 2014-01-07 09:51:25Z vhennebert $ */

package org.apache.fop;


This class is used to evaluate the version information contained in the Manifest of FOP's JAR.
Note that this class can only find the version information if it's in the org.apache.fop package
as this package equals the one specified in the manifest.

/**
 * This class is used to evaluate the version information contained in the Manifest of FOP's JAR.
 * Note that this class can only find the version information if it's in the org.apache.fop package
 * as this package equals the one specified in the manifest.
 */
public final class Version {

    private Version() { }

    
Get the version of FOP

Returns:the version string
/**
     * Get the version of FOP
     * @return the version string
     */
    public static String getVersion() {
        String version = null;
        Package jarinfo = Version.class.getPackage();
        if (jarinfo != null) {
            version = jarinfo.getImplementationVersion();
        }
        if (version == null) {
            //Fallback if FOP is used in a development environment
            // CSOFF: LineLength
            String headURL = "$HeadURL: https://svn.apache.org/repos/asf/xmlgraphics/fop/branches/fop-2_3/fop-core/src/main/java/org/apache/fop/Version.java $";
            // CSON: LineLength
            version = headURL;
            final String pathPrefix = "/xmlgraphics/fop/";
            int pos = version.indexOf(pathPrefix);
            if (pos >= 0) {
                version = version.substring(pos + pathPrefix.length() - 1, version.length() - 2);
                pos = version.indexOf("/src/");
                version = version.substring(1, pos);
                version = " " + version;
            } else {
                version = "";
            }
            version = "SVN" + version;
        }
        return version;
    }

}