org.omnaest.utils.table.impl.serializer.XHtmlUnmarshallerImpl.java Source code

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Here is the source code for org.omnaest.utils.table.impl.serializer.XHtmlUnmarshallerImpl.java

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/*******************************************************************************
 * Copyright 2012 Danny Kunz
 * 
 * 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.omnaest.utils.table.impl.serializer;

import java.io.InputStream;
import java.io.Reader;
import java.io.StringReader;
import java.io.Writer;

import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;

import org.apache.commons.lang3.StringEscapeUtils;
import org.omnaest.utils.events.exception.ExceptionHandler;
import org.omnaest.utils.structure.container.ByteArrayContainer;
import org.omnaest.utils.table.Table;
import org.omnaest.utils.table.TableSerializer.UnmarshallerXHtml;
import org.omnaest.utils.xml.XMLHelper;
import org.omnaest.utils.xml.XMLHelper.XSLTransformerConfiguration;

/**
 * {@link UnmarshallerXHtml} implementation
 * 
 * @see XmlMarshallerImpl
 * @author Omnaest
 * @param <E>
 */
@SuppressWarnings("javadoc")
class XHtmlUnmarshallerImpl<E> extends XmlUnmarshallerImpl<E> implements UnmarshallerXHtml<E> {

    XHtmlUnmarshallerImpl(Table<E> table, ExceptionHandler exceptionHandler) {
        super(table, exceptionHandler);
    }

    @Override
    public Table<E> from(Reader reader) {
        try {
            final ByteArrayContainer byteArrayContainerSource = new ByteArrayContainer().copyFrom(reader);
            final String xhtmlContent = StringEscapeUtils.unescapeHtml4(byteArrayContainerSource.toString());
            final Reader readerOfConvertedContent = new StringReader(xhtmlContent);

            final ByteArrayContainer byteArrayContainer = new ByteArrayContainer();
            final Writer writer = byteArrayContainer.getOutputStreamWriter();
            final InputStream inputStreamXSLT = XHtmlMarshallerImpl.class.getResourceAsStream("/XHtmlToXml.xsl");

            final StreamSource xslt = new StreamSource(inputStreamXSLT);
            final StreamSource xml = new StreamSource(readerOfConvertedContent);
            final StreamResult result = new StreamResult(writer);
            XMLHelper.transform(xslt, xml, result, this.exceptionHandler, new XSLTransformerConfiguration());
            writer.close();

            super.from(byteArrayContainer.getReader(this.getEncoding()));
        } catch (Exception e) {
            this.exceptionHandler.handleException(e);
        }

        return this.table;
    }
}