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The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.

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/**
 * Copyright (C) 2011-2015 The XDocReport Team 
 *
 * All rights reserved.
 *
 * Permission is hereby granted, free  of charge, to any person obtaining
 * a  copy  of this  software  and  associated  documentation files  (the
 * "Software"), to  deal in  the Software without  restriction, including
 * without limitation  the rights to  use, copy, modify,  merge, publish,
 * distribute,  sublicense, and/or sell  copies of  the Software,  and to
 * permit persons to whom the Software  is furnished to do so, subject to
 * the following conditions:
 *
 * The  above  copyright  notice  and  this permission  notice  shall  be
 * included in all copies or substantial portions of the Software.
 *
 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
 * EXPRESS OR  IMPLIED, INCLUDING  BUT NOT LIMITED  TO THE  WARRANTIES OF
 * MERCHANTABILITY,    FITNESS    FOR    A   PARTICULAR    PURPOSE    AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE,  ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package fr.opensagres.poi.xwpf.converter.pdf;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Writer;

import org.apache.poi.xwpf.usermodel.XWPFDocument;

import fr.opensagres.poi.xwpf.converter.core.AbstractXWPFConverter;
import fr.opensagres.poi.xwpf.converter.core.IXWPFConverter;
import fr.opensagres.poi.xwpf.converter.core.XWPFConverterException;
import fr.opensagres.poi.xwpf.converter.pdf.internal.PdfMapper;

public class PdfConverter extends AbstractXWPFConverter {

	private static final IXWPFConverter INSTANCE = new PdfConverter();

	public static IXWPFConverter getInstance() {
		return INSTANCE;
	}

	@Override
	protected void doConvert(XWPFDocument document, OutputStream out,
			Writer writer, PdfOptions options) throws XWPFConverterException,
			IOException {
		try {
			// PdfMapper mapper = new PdfMapper( document, out, options );

			// process content
			ByteArrayOutputStream tempOut = new ByteArrayOutputStream();
			PdfMapper mapper = new PdfMapper(document, tempOut, options, null);
			mapper.start();

			if (mapper.useTotalPageField()) {
				// process content a second time, knowing the expected page
				// number
				Integer actualPageCount = Integer
						.valueOf(mapper.getPageCount());
				mapper = new PdfMapper(document, out, options, actualPageCount);
				mapper.start();
			} else {
				out.write(tempOut.toByteArray());
			}

		} catch (Exception e) {
			throw new XWPFConverterException(e);
		}

	}

}