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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
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 * language governing permissions and limitations under the License.
 *
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 *
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package com.sun.enterprise.universal.xml;

import java.io.*;
import javax.xml.stream.*;

/**
 * A place to put all the ugly boiler plate for parsing an XML file.
 * @author Byron Nevins
 */
public final class XmlParserHelper {

    public XmlParserHelper(final File f) throws FileNotFoundException, XMLStreamException {
        reader = new InputStreamReader(new FileInputStream(f));
        parser = XMLInputFactory.newInstance().createXMLStreamReader(
                f.toURI().toString(), reader);
    }

    public final XMLStreamReader get() {
        return parser;
    }

    /**
     * Don't forget to call this method when finished!
     * Closes the parser and the stream
     */
    public final void stop() {
        // yes -- you **do** need to close BOTH of them!
        try {
            if (parser != null) {
                parser.close();
            }
        }
        catch (Exception e) {
            // ignore
        }
        try {
            if (reader != null) {
                reader.close();
            }
        }
        catch (Exception e) {
            // ignore
        }
    }

    private final XMLStreamReader parser;
    private final InputStreamReader reader;
}