--- /dev/null
+/*
+ * $Id$
+ * ============================================================================
+ * 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.util;
+
+/**
+ * This interface defines constants used by the ASCII85 filters.
+ *
+ * @author <a href="mailto:jeremias@apache.org">Jeremias Maerki</a>
+ * @version $Id$
+ */
+public interface ASCII85Constants {
+
+ /** Special character "z" stands for four NULL bytes (short-cut for !!!!!) */
+ public static final int ZERO = 0x7A; //"z"
+ /** ZERO as a byte array */
+ public static final byte[] ZERO_ARRAY = {(byte)ZERO};
+ /** The start index for ASCII85 characters (!) */
+ public static final int START = 0x21; //"!"
+ /** The end index for ASCII85 characters (u) */
+ public static final int END = 0x75; //"u"
+ /** The EOL indicator (LF) */
+ public static final int EOL = 0x0A; //"\n"
+ /** The EOD (end of data) indicator */
+ public static final byte[] EOD = {0x7E, 0x3E}; //"~>"
+
+ /** Array of powers of 85 (4, 3, 2, 1, 0) */
+ public static final long POW85[] = new long[] {85 * 85 * 85 * 85,
+ 85 * 85 * 85,
+ 85 * 85,
+ 85,
+ 1};
+
+ /*
+ public static final long BASE85_4 = 85;
+ public static final long BASE85_3 = BASE85_4 * BASE85_4;
+ public static final long BASE85_2 = BASE85_3 * BASE85_4;
+ public static final long BASE85_1 = BASE85_2 * BASE85_4;
+ */
+
+}
+
+
--- /dev/null
+/*
+ * $Id$
+ * ============================================================================
+ * 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.util;
+
+import java.io.InputStream;
+import java.io.IOException;
+
+/**
+ * This class applies a ASCII85 decoding to the stream.
+ * <p>
+ * The class is derived from InputStream instead of FilteredInputStream because
+ * we can use the read(byte[], int, int) method from InputStream which simply
+ * delegates to read(). This makes the implementation easier.
+ * <p>
+ * The filter is described in chapter 3.13.3 of the PostScript Language
+ * Reference (third edition).
+ *
+ * @author <a href="mailto:jeremias@apache.org">Jeremias Maerki</a>
+ * @version $Id$
+ */
+public class ASCII85InputStream extends InputStream
+ implements ASCII85Constants {
+
+ private InputStream in;
+ private boolean eodReached = false;
+ private int[] b = new int[4]; //decoded
+ private int bSize = 0;
+ private int bIndex = 0;
+
+ /** @see java.io.FilterInputStream **/
+ public ASCII85InputStream(InputStream in) {
+ super();
+ this.in = in;
+ }
+
+ /** @see java.io.FilterInputStream **/
+ public int read() throws IOException {
+ //Check if we need to read the next tuple
+ if (bIndex >= bSize) {
+ if (eodReached) {
+ return -1;
+ }
+ readNextTuple();
+ if (bSize == 0) {
+ if (!eodReached) {
+ throw new IllegalStateException("Internal error");
+ }
+ return -1;
+ }
+ }
+ int result = b[bIndex];
+ result = (result < 0 ? 256 + result : result);
+ bIndex++;
+ return result;
+ }
+
+ private int filteredRead() throws IOException {
+ int buf;
+ while (true) {
+ buf = in.read();
+ switch (buf) {
+ case 0: //null
+ case 9: //tab
+ case 10: //LF
+ case 12: //FF
+ case 13: //CR
+ case 32: //space
+ continue; //ignore
+ case ZERO:
+ case 126: //= EOD[0] = '~'
+ return buf;
+ default:
+ if ((buf >= START) && (buf <= END)) {
+ return buf;
+ } else {
+ throw new IOException("Illegal character detected: " + buf);
+ }
+ }
+ }
+ }
+
+ private void handleEOD() throws IOException {
+ final int buf = in.read();
+ if (buf != EOD[1]) {
+ throw new IOException("'>' expected after '~' (EOD)");
+ }
+ eodReached = true;
+ bSize = 0;
+ bIndex = 0;
+ }
+
+ private void readNextTuple() throws IOException {
+ int buf;
+ long tuple = 0;
+ //Read ahead and check for special "z"
+ buf = filteredRead();
+ if (buf == ZERO) {
+ java.util.Arrays.fill(b, 0);
+ bSize = 4;
+ bIndex = 0;
+ } else if (buf == EOD[0]) {
+ handleEOD();
+ } else {
+ int cIndex = 0;
+ tuple = (buf - START) * POW85[cIndex];
+ //System.out.println(cIndex + ": " + Long.toHexString(tuple));
+ cIndex++;
+ while (cIndex < 5) {
+ buf = filteredRead();
+ if (buf == EOD[0]) {
+ handleEOD();
+ break;
+ } else if (buf == ZERO) {
+ //Violation 2
+ throw new IOException("Illegal 'z' within tuple");
+ } else {
+ tuple += (buf - START) * POW85[cIndex];
+ //System.out.println(cIndex + ": " + Long.toHexString(tuple));
+ cIndex++;
+ }
+ }
+ int cSize = cIndex;
+ if (cSize == 1) {
+ //Violation 3
+ throw new IOException("Only one character in tuple");
+ }
+ //Handle optional, trailing, incomplete tuple
+ while (cIndex < 5) {
+ tuple += POW85[cIndex - 1];
+ cIndex++;
+ }
+ if (tuple > (2L << 31) - 1) {
+ //Violation 1
+ throw new IOException("Illegal tuple (> 2^32 - 1)");
+ }
+ //Convert tuple
+ b[0] = (byte)((tuple >> 24) & 0xFF);
+ b[1] = (byte)((tuple >> 16) & 0xFF);
+ b[2] = (byte)((tuple >> 8) & 0xFF);
+ b[3] = (byte)((tuple) & 0xFF);
+ bSize = cSize - 1;
+ bIndex = 0;
+ }
+ }
+
+}
+
+
--- /dev/null
+/*
+ * $Id$
+ * ============================================================================
+ * 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.util;
+
+import java.io.OutputStream;
+import java.io.FilterOutputStream;
+import java.io.IOException;
+
+/**
+ * This class applies a ASCII85 encoding to the stream.
+ *
+ * @author <a href="mailto:jeremias@apache.org">Jeremias Maerki</a>
+ * @version $Id$
+ */
+public class ASCII85OutputStream extends FilterOutputStream
+ implements ASCII85Constants, Finalizable {
+
+ private static final boolean DEBUG = false;
+
+ private int pos = 0;
+ private long buffer = 0;
+ private int posinline = 0;
+ private int bw = 0;
+
+ /** @see java.io.FilterOutputStream **/
+ public ASCII85OutputStream(OutputStream out) {
+ super(out);
+ }
+
+ /** @see java.io.FilterOutputStream **/
+ public void write(int b) throws IOException {
+ if (pos == 0) {
+ buffer += (b << 24) & 0xff000000L;
+ } else if (pos == 1) {
+ buffer += (b << 16) & 0xff0000L;
+ } else if (pos == 2) {
+ buffer += (b << 8) & 0xff00L;
+ } else {
+ buffer += b & 0xffL;
+ }
+ pos++;
+
+ if (pos > 3) {
+ checkedWrite(convertWord(buffer));
+ buffer = 0;
+ pos = 0;
+ }
+ }
+
+ /* UNUSED ATM
+ private void checkedWrite(int b) throws IOException {
+ if (posinline == 80) {
+ out.write(EOL); bw++;
+ posinline = 0;
+ }
+ checkedWrite(b);
+ posinline++;
+ bw++;
+ }*/
+
+ private void checkedWrite(byte[] buf) throws IOException {
+ checkedWrite(buf, buf.length, false);
+ }
+
+ private void checkedWrite(byte[] buf, boolean nosplit) throws IOException {
+ checkedWrite(buf, buf.length, nosplit);
+ }
+
+ private void checkedWrite(byte[] buf , int len) throws IOException {
+ checkedWrite(buf, len, false);
+ }
+
+ private void checkedWrite(byte[] buf , int len, boolean nosplit) throws IOException {
+ if (posinline + len > 80) {
+ int firstpart = (nosplit ? 0 : len - (posinline + len - 80));
+ if (firstpart > 0) {
+ out.write(buf, 0, firstpart);
+ }
+ out.write(EOL); bw++;
+ int rest = len - firstpart;
+ if (rest > 0) {
+ out.write(buf, firstpart, rest);
+ }
+ posinline = rest;
+ } else {
+ out.write(buf, 0, len);
+ posinline += len;
+ }
+ bw += len;
+ }
+
+ /**
+ * This converts a 32 bit value (4 bytes) into 5 bytes using base 85.
+ * each byte in the result starts with zero at the '!' character so
+ * the resulting base85 number fits into printable ascii chars
+ *
+ * @param word the 32 bit unsigned (hence the long datatype) word
+ * @return 5 bytes (or a single byte of the 'z' character for word
+ * values of 0)
+ */
+ private byte[] convertWord(long word) {
+ word = word & 0xffffffff;
+
+ if (word == 0) {
+ return ZERO_ARRAY;
+ } else {
+ if (word < 0) {
+ word = -word;
+ }
+ byte c1 =
+ (byte)((word
+ / POW85[0]) & 0xFF);
+ byte c2 =
+ (byte)(((word - (c1 * POW85[0]))
+ / POW85[1]) & 0xFF);
+ byte c3 =
+ (byte)(((word - (c1 * POW85[0])
+ - (c2 * POW85[1]))
+ / POW85[2]) & 0xFF);
+ byte c4 =
+ (byte)(((word - (c1 * POW85[0])
+ - (c2 * POW85[1])
+ - (c3 * POW85[2]))
+ / POW85[3]) & 0xFF);
+ byte c5 =
+ (byte)(((word - (c1 * POW85[0])
+ - (c2 * POW85[1])
+ - (c3 * POW85[2])
+ - (c4 * POW85[3])))
+ & 0xFF);
+
+ byte[] ret = {
+ (byte)(c1 + START), (byte)(c2 + START),
+ (byte)(c3 + START), (byte)(c4 + START),
+ (byte)(c5 + START)
+ };
+
+ if (DEBUG) {
+ for (int i = 0; i < ret.length; i++) {
+ if (ret[i] < 33 || ret[i] > 117) {
+ System.out.println("Illegal char value "
+ + new Integer(ret[i]));
+ }
+ }
+ }
+ return ret;
+ }
+ }
+
+ /** @see org.apache.fop.render.ps.Finalizable **/
+ public void finalizeStream() throws IOException {
+ // now take care of the trailing few bytes.
+ // with n leftover bytes, we append 0 bytes to make a full group of 4
+ // then convert like normal (except not applying the special zero rule)
+ // and write out the first n+1 bytes from the result
+ if (pos > 0) {
+ int rest = pos;
+ /*
+ byte[] lastdata = new byte[4];
+ int i = 0;
+ for (int j = 0; j < 4; j++) {
+ if (j < rest) {
+ lastdata[j] = data[i++];
+ } else {
+ lastdata[j] = 0;
+ }
+ }
+
+ long val = ((lastdata[0] << 24) & 0xff000000L)
+ + ((lastdata[1] << 16) & 0xff0000L)
+ + ((lastdata[2] << 8) & 0xff00L)
+ + (lastdata[3] & 0xffL);
+ */
+
+ byte[] conv;
+ // special rule for handling zeros at the end
+ if (buffer != 0) {
+ conv = convertWord(buffer);
+ } else {
+ conv = new byte[5];
+ for (int j = 0; j < 5; j++) {
+ conv[j] = (byte)'!';
+ }
+ }
+ // assert rest+1 <= 5
+ checkedWrite(conv, rest + 1);
+ }
+ // finally write the two character end of data marker
+ checkedWrite(EOD, true);
+
+ flush();
+ if (out instanceof Finalizable) {
+ ((Finalizable)out).finalizeStream();
+ }
+ }
+
+ /** @see java.io.FilterOutputStream **/
+ public void close() throws IOException {
+ finalizeStream();
+ super.close();
+ }
+
+}
+
+
--- /dev/null
+/*
+ * $Id$
+ * ============================================================================
+ * 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.util;
+
+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@apache.org">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();
+ }
+
+
+}
+
+
--- /dev/null
+/*
+ * $Id$
+ * ============================================================================
+ * 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.util;
+
+/**
+ * This interface is used for special FilteredOutputStream classes that won't
+ * be closed (since this causes the target OutputStream to be closed, too) but
+ * where flush() is not enough, for example because a final marker has to be
+ * written to the target stream.
+ *
+ * @author <a href="mailto:jeremias@apache.org">Jeremias Maerki</a>
+ * @version $Id$
+ */
+public interface Finalizable {
+
+ /**
+ * This method can be called instead of close() on a subclass of
+ * FilteredOutputStream when a final marker has to be written to the target
+ * stream, but close() cannot be called.
+ *
+ * @exception java.io.IOException In case of an IO problem
+ */
+ void finalizeStream()
+ throws java.io.IOException;
+
+}
--- /dev/null
+/*
+ * $Id$
+ * ============================================================================
+ * 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.util;
+
+import java.io.OutputStream;
+import java.io.IOException;
+
+/**
+ * This class applies a FlateEncode filter to the stream. It is basically the
+ * normal DeflaterOutputStream except now also implementing the Finalizable
+ * interface.
+ *
+ * @author <a href="mailto:jeremias@apache.org">Jeremias Maerki</a>
+ * @version $Id$
+ */
+public class FlateEncodeOutputStream extends java.util.zip.DeflaterOutputStream
+ implements Finalizable {
+
+
+ /** @see java.util.zip.DeflaterOutputStream **/
+ public FlateEncodeOutputStream(OutputStream out) {
+ super(out);
+ }
+
+
+ /** @see org.apache.fop.render.ps.Finalizable **/
+ public void finalizeStream() throws IOException {
+ finish();
+ flush();
+ if (out instanceof Finalizable) {
+ ((Finalizable)out).finalizeStream();
+ }
+ }
+
+}
+
+
--- /dev/null
+/*
+ * $Id$
+ * ============================================================================
+ * 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.util;
+
+import java.io.FilterOutputStream;
+import java.io.OutputStream;
+import java.io.IOException;
+
+
+/**
+ * This class applies a RunLengthEncode filter to the stream.
+ *
+ * @author <a href="mailto:smwolke@geistig.com">Stephen Wolke</a>
+ * @version $Id$
+ */
+public class RunLengthEncodeOutputStream extends FilterOutputStream
+ implements Finalizable {
+
+ private static final int MAX_SEQUENCE_COUNT = 127;
+ private static final int END_OF_DATA = 128;
+ private static final int BYTE_MAX = 256;
+
+ private static final int NOT_IDENTIFY_SEQUENCE = 0;
+ private static final int START_SEQUENCE = 1;
+ private static final int IN_SEQUENCE = 2;
+ private static final int NOT_IN_SEQUENCE = 3;
+
+ private int runCount = 0;
+ private int isSequence = NOT_IDENTIFY_SEQUENCE;
+ private byte[] runBuffer = new byte[MAX_SEQUENCE_COUNT + 1];
+
+
+ /** @see java.io.FilterOutputStream **/
+ public RunLengthEncodeOutputStream(OutputStream out) {
+ super(out);
+ }
+
+
+ /** @see java.io.FilterOutputStream **/
+ public void write(byte b)
+ throws java.io.IOException {
+ runBuffer[runCount] = b;
+
+ switch (runCount) {
+ case 0:
+ runCount = 0;
+ isSequence = NOT_IDENTIFY_SEQUENCE;
+ runCount++;
+ break;
+ case 1:
+ if (runBuffer[runCount] != runBuffer[runCount - 1]) {
+ isSequence = NOT_IN_SEQUENCE;
+ }
+ runCount++;
+ break;
+ case 2:
+ if (runBuffer[runCount] != runBuffer[runCount - 1]) {
+ isSequence = NOT_IN_SEQUENCE;
+ } else {
+ if (isSequence == NOT_IN_SEQUENCE) {
+ isSequence = START_SEQUENCE;
+ } else {
+ isSequence = IN_SEQUENCE;
+ }
+ }
+ runCount++;
+ break;
+ case MAX_SEQUENCE_COUNT:
+ if (isSequence == IN_SEQUENCE) {
+ out.write(BYTE_MAX - (MAX_SEQUENCE_COUNT - 1));
+ out.write(runBuffer[runCount - 1]);
+ runBuffer[0] = runBuffer[runCount];
+ runCount = 1;
+ } else {
+ out.write(MAX_SEQUENCE_COUNT);
+ out.write(runBuffer, 0, runCount + 1);
+ runCount = 0;
+ }
+ isSequence = NOT_IDENTIFY_SEQUENCE;
+ break;
+ default:
+ switch (isSequence) {
+ case IN_SEQUENCE:
+ if (runBuffer[runCount] != runBuffer[runCount - 1]) {
+ out.write(BYTE_MAX - (runCount - 1));
+ out.write(runBuffer[runCount - 1]);
+ runBuffer[0] = runBuffer[runCount];
+ runCount = 1;
+ isSequence = NOT_IDENTIFY_SEQUENCE;
+ break;
+ }
+ runCount++;
+ break;
+ case NOT_IN_SEQUENCE:
+ if (runBuffer[runCount] == runBuffer[runCount - 1]) {
+ isSequence = START_SEQUENCE;
+ }
+ runCount++;
+ break;
+ case START_SEQUENCE:
+ if (runBuffer[runCount] == runBuffer[runCount - 1]) {
+ out.write(runCount - 3);
+ out.write(runBuffer, 0, runCount - 2);
+ runBuffer[0] = runBuffer[runCount];
+ runBuffer[1] = runBuffer[runCount];
+ runBuffer[2] = runBuffer[runCount];
+ runCount = 3;
+ isSequence = IN_SEQUENCE;
+ break;
+ } else {
+ isSequence = NOT_IN_SEQUENCE;
+ runCount++;
+ break;
+ }
+ }
+ }
+ }
+
+
+ /** @see java.io.FilterOutputStream **/
+ public void write(byte[] b)
+ throws IOException {
+
+ for (int i = 0; i < b.length; i++) {
+ this.write(b[i]);
+ }
+ }
+
+
+ /** @see java.io.FilterOutputStream **/
+ public void write(byte[] b, int off, int len)
+ throws IOException {
+
+ for (int i = 0; i < len; i++) {
+ this.write(b[off + i]);
+ }
+ }
+
+
+ /** @see org.apache.fop.render.ps.Finalizable **/
+ public void finalizeStream()
+ throws IOException {
+ switch (isSequence) {
+ case IN_SEQUENCE:
+ out.write(BYTE_MAX - (runCount - 1));
+ out.write(runBuffer[runCount - 1]);
+ break;
+ default:
+ out.write(runCount - 1);
+ out.write(runBuffer, 0, runCount);
+ }
+
+ out.write(END_OF_DATA);
+
+ flush();
+ if (out instanceof Finalizable) {
+ ((Finalizable) out).finalizeStream();
+ }
+ }
+
+
+ /** @see java.io.FilterOutputStream **/
+ public void close()
+ throws IOException {
+ finalizeStream();
+ super.close();
+ }
+
+}
+
projects / xmlgraphics-fop.git / commitdiff