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- /*
- * $Id$
- * ============================================================================
- * The Apache Software License, Version 1.1
- * ============================================================================
- *
- * Copyright (C) 1999-2003 The Apache Software Foundation. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without modifica-
- * tion, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * 3. The end-user documentation included with the redistribution, if any, must
- * include the following acknowledgment: "This product includes software
- * developed by the Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself, if
- * and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "FOP" and "Apache Software Foundation" must not be used to
- * endorse or promote products derived from this software without prior
- * written permission. For written permission, please contact
- * apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache", nor may
- * "Apache" appear in their name, without prior written permission of the
- * Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
- * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * APACHE SOFTWARE FOUNDATION OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
- * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLU-
- * DING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
- * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- * ============================================================================
- *
- * This software consists of voluntary contributions made by many individuals
- * on behalf of the Apache Software Foundation and was originally created by
- * James Tauber <jtauber@jtauber.com>. For more information on the Apache
- * Software Foundation, please see <http://www.apache.org/>.
- */
- package org.apache.fop.render.ps;
-
- import java.io.OutputStream;
- import java.io.FilterOutputStream;
- import java.io.IOException;
-
- /**
- * This class applies a ASCII Hex encoding to the stream.
- *
- * @author <a href="mailto:jeremias.maerki@outline.ch">Jeremias Maerki</a>
- * @version $Id$
- */
- public class ASCIIHexOutputStream extends FilterOutputStream
- implements Finalizable {
-
- private static final int EOL = 0x0A; //"\n"
- private static final int EOD = 0x3E; //">"
- private static final int ZERO = 0x30; //"0"
- private static final int NINE = 0x39; //"9"
- private static final int A = 0x41; //"A"
- private static final int ADIFF = A - NINE - 1;
-
- private int posinline = 0;
-
-
- /** @see java.io.FilterOutputStream **/
- public ASCIIHexOutputStream(OutputStream out) {
- super(out);
- }
-
-
- /** @see java.io.FilterOutputStream **/
- public void write(int b) throws IOException {
- b &= 0xFF;
-
- int digit1 = ((b & 0xF0) >> 4) + ZERO;
- if (digit1 > NINE) {
- digit1 += ADIFF;
- }
- out.write(digit1);
-
- int digit2 = (b & 0x0F) + ZERO;
- if (digit2 > NINE) {
- digit2 += ADIFF;
- }
- out.write(digit2);
-
- posinline++;
- checkLineWrap();
- }
-
-
- private void checkLineWrap() throws IOException {
- //Maximum line length is 80 characters
- if (posinline >= 40) {
- out.write(EOL);
- posinline = 0;
- }
- }
-
-
- /** @see org.apache.fop.render.ps.Finalizable **/
- public void finalizeStream() throws IOException {
- checkLineWrap();
- //Write closing character ">"
- super.write(EOD);
-
- flush();
- if (out instanceof Finalizable) {
- ((Finalizable) out).finalizeStream();
- }
- }
-
-
- /** @see java.io.FilterOutputStream **/
- public void close() throws IOException {
- finalizeStream();
- super.close();
- }
-
-
- }
-
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