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 * reserved comment block

 * DO NOT REMOVE OR ALTER!

 */

/*

 * 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

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package com.sun.org.apache.xerces.internal.jaxp.validation;

import javax.xml.transform.stream.StreamSource;

import com.sun.org.apache.xerces.internal.xni.XNIException;

import com.sun.org.apache.xerces.internal.xni.parser.XMLInputSource;

import com.sun.org.apache.xerces.internal.xni.parser.XMLParseException;

import org.xml.sax.SAXException;

import org.xml.sax.SAXParseException;

/**

 * <p>Static utility methods for the Validation API implementation.</p>

 *

 * @author Kohsuke Kawaguchi

 */

final class Util {

    /**

     * Creates a proper {@link XMLInputSource} from a {@link StreamSource}.

     *

     * @return always return non-null valid object.

     */

    public static final XMLInputSource toXMLInputSource( StreamSource in ) {

        if( in.getReader()!=null )

            return new XMLInputSource(

            in.getPublicId(), in.getSystemId(), in.getSystemId(),

            in.getReader(), null );

        if( in.getInputStream()!=null )

            return new XMLInputSource(

            in.getPublicId(), in.getSystemId(), in.getSystemId(),

            in.getInputStream(), null );

        return new XMLInputSource(

        in.getPublicId(), in.getSystemId(), in.getSystemId(), false );

    }

    /**

     * Reconstructs {@link SAXException} from XNIException.

     */

    public static SAXException toSAXException(XNIException e) {

        if(e instanceof XMLParseException)

            return toSAXParseException((XMLParseException)e);

        if( e.getException() instanceof SAXException )

            return (SAXException)e.getException();

        return new SAXException(e.getMessage(),e.getException());

    }

    public static SAXParseException toSAXParseException( XMLParseException e ) {

        if( e.getException() instanceof SAXParseException )

            return (SAXParseException)e.getException();

        return new SAXParseException( e.getMessage(),

        e.getPublicId(), e.getExpandedSystemId(),

        e.getLineNumber(), e.getColumnNumber(),

        e.getException() );

    }

} // Util