com.wantez.eregparser.Parser.java Source code

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Here is the source code for com.wantez.eregparser.Parser.java

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//      Copyright 2009 Ivan Rodriguez Murillo
//   
//   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 com.wantez.eregparser;

import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;

import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;

import org.apache.commons.io.IOUtils;
import org.apache.log4j.Logger;

public class Parser {
    private final Logger log = Logger.getLogger(this.getClass());
    private javax.xml.transform.Transformer transformer;

    public Parser(final String xsl) throws TransformerConfigurationException {
        final TransformerFactory tFactory = TransformerFactory.newInstance();

        final ClassLoader classLoader = this.getClass().getClassLoader();
        final InputStream stream = classLoader.getResourceAsStream(xsl);
        final StreamSource streamSource = new StreamSource(stream);
        streamSource.setSystemId(classLoader.getResource(xsl).getPath());
        this.transformer = tFactory.newTransformer(streamSource);

    }

    public void parse(final String input, final String output) throws FileNotFoundException, TransformerException {
        this.log.info(input + " -> " + output);
        final StreamSource streamSource = new StreamSource(input);
        final StreamResult streamResult = new StreamResult(new FileOutputStream(output));
        this.transformer.transform(streamSource, streamResult);

    }

    public String parse(final String document) throws TransformerException, UnsupportedEncodingException {
        Source streamSource = new StreamSource(IOUtils.toInputStream(document));
        String result;
        final ByteArrayOutputStream baos = new ByteArrayOutputStream();
        Result streamResult = new StreamResult(baos);
        this.transformer.transform(streamSource, streamResult);
        result = baos.toString("ISO-8859-1");
        return result;
    }
}