org.pentaho.di.core.xml.XMLCheck.java Source code

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Here is the source code for org.pentaho.di.core.xml.XMLCheck.java

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/*! ******************************************************************************
 *
 * Pentaho Data Integration
 *
 * Copyright (C) 2002-2013 by Pentaho : http://www.pentaho.com
 *
 *******************************************************************************
 *
 * Licensed 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.
 *
 ******************************************************************************/

package org.pentaho.di.core.xml;

import java.io.InputStream;

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

import org.apache.commons.vfs.FileObject;
import org.pentaho.di.core.exception.KettleException;
import org.xml.sax.helpers.DefaultHandler;

public class XMLCheck {

    public static class XMLTreeHandler extends DefaultHandler {

    }

    /**
     * Checks an xml file is well formed.
     *
     * @param file
     *          The file to check
     * @return true if the file is well formed.
     */
    public static final boolean isXMLFileWellFormed(FileObject file) throws KettleException {
        boolean retval = false;
        try {
            retval = isXMLWellFormed(file.getContent().getInputStream());
        } catch (Exception e) {
            throw new KettleException(e);
        }

        return retval;
    }

    /**
     * Checks an xml string is well formed.
     *
     * @param is
     *          inputstream
     * @return true if the xml is well formed.
     */
    public static final boolean isXMLWellFormed(InputStream is) throws KettleException {
        boolean retval = false;
        try {
            SAXParserFactory factory = SAXParserFactory.newInstance();
            XMLTreeHandler handler = new XMLTreeHandler();

            // Parse the input.
            SAXParser saxParser = factory.newSAXParser();
            saxParser.parse(is, handler);
            retval = true;
        } catch (Exception e) {
            throw new KettleException(e);
        }
        return retval;
    }

}