Xml2HL7.java

/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is part of dcm4che, an implementation of DICOM(TM) in
 * Java(TM), hosted at https://github.com/gunterze/dcm4che.
 *
 * The Initial Developer of the Original Code is
 * Agfa Healthcare.
 * Portions created by the Initial Developer are Copyright (C) 2012
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 * See @authors listed below
 *
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 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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package org.dcm4che3.tool.xml2hl7;

import java.io.File;
import java.io.OutputStreamWriter;
import java.text.MessageFormat;
import java.util.ResourceBundle;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.dcm4che3.hl7.HL7ContentHandler;

/**
 * @author Gunter Zeilinger <gunterze@gmail.com>
 *
 */
public class Xml2HL7 {

    private static ResourceBundle rb =
            ResourceBundle.getBundle("org.dcm4che3.tool.xml2hl7.messages");

    public static void main(String[] args) {
        try {
            parseXML(fname(args));
        } catch (Exception e) {
            System.err.println("xml2hl7: " + e.getMessage());
            e.printStackTrace();
            System.exit(2);
        }
    }

    private static void parseXML(String fname) throws Exception {
        SAXParserFactory f = SAXParserFactory.newInstance();
        SAXParser p = f.newSAXParser();
        HL7ContentHandler ch = new HL7ContentHandler(
                new OutputStreamWriter(System.out));
        if (fname.equals("-")) {
            p.parse(System.in, ch);
        } else {
            p.parse(new File(fname), ch);
        }
    }

    private static String fname(String[] args) {
        if (args.length == 0) {
            System.err.println(rb.getString("missing"));
            System.err.println(rb.getString("usage"));
            System.exit(2);
        }
        if (args.length > 1) {
            System.err.println(rb.getString("too-many"));
            System.err.println(rb.getString("usage"));
            System.exit(2);
        }
        String arg0 = args[0];
        if (arg0.equals("-h") || arg0.equals("--help")) {
            System.out.println(rb.getString("usage"));
            System.exit(0);
        }
        if (arg0.equals("-V") || arg0.equals("--version")) {
            Package p = Xml2HL7.class.getPackage();
            String s = p.getName();
            System.out.println(s.substring(s.lastIndexOf('.')+1) + ": " +
                   p.getImplementationVersion());
            System.exit(0);
        }
        if (arg0.startsWith("-") && arg0.length() > 1) {
            System.err.println(MessageFormat.format(
                    rb.getString("unrecognized-option"), arg0));
            System.err.println(rb.getString("usage"));
            System.exit(2);
        }
        return arg0;
    }
}