--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/com/go/trove/io/FastCharToByteBuffer.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,274 @@
+/* ====================================================================
+ * Trove - Copyright (c) 1999-2001 Walt Disney Internet Group
+ * ====================================================================
+ * The Tea Software License, Version 1.1
+ *
+ * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, 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
+ *        Walt Disney Internet Group (http://opensource.go.com/)."
+ *    Alternately, this acknowledgment may appear in the software itself,
+ *    if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
+ *    not be used to endorse or promote products derived from this
+ *    software without prior written permission. For written
+ *    permission, please contact opensource@dig.com.
+ *
+ * 5. Products derived from this software may not be called "Tea",
+ *    "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
+ *    "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
+ *    written permission of the Walt Disney Internet Group.
+ *
+ * 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 WALT DISNEY INTERNET GROUP OR ITS
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 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.
+ * ====================================================================
+ *
+ * For more information about Tea, please see http://opensource.go.com/.
+ */
+
+package com.go.trove.io;
+
+import java.io.*;
+import java.util.Set;
+import java.util.HashSet;
+
+/******************************************************************************
+ * A CharToByteBuffer implementation that converts ISO-8859-1 encoded
+ * characters faster. To force fast conversion, construct FastCharToByteBuffer
+ * with ISO-8859-1 as the default encoding.
+ * 
+ * @author Brian S O'Neill
+ * @version
+ * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 01/06/14 <!-- $-->
+ */
+public class FastCharToByteBuffer implements CharToByteBuffer, Serializable {
+    private static final int TEMP_BUF_LEN = 512;
+    private static final Set SUPPORTED_ENCODINGS;
+
+    static {
+        SUPPORTED_ENCODINGS = new HashSet();
+        SUPPORTED_ENCODINGS.add("8859-1");
+        SUPPORTED_ENCODINGS.add("8859_1");
+        SUPPORTED_ENCODINGS.add("iso-8859-1");
+        SUPPORTED_ENCODINGS.add("ISO-8859-1");
+        SUPPORTED_ENCODINGS.add("iso8859_1");
+        SUPPORTED_ENCODINGS.add("ISO8859_1");
+    }
+
+    static boolean isSupportedEncoding(String encoding) {
+        return SUPPORTED_ENCODINGS.contains(encoding);
+    }
+
+    private ByteBuffer mBuffer;
+
+    private transient byte[] mTempBytes;
+    private transient char[] mTempChars;
+
+    private CharToByteBuffer mSlowConvertor;
+
+    /**
+     * @param buffer Buffer that receives the characters converted to bytes.
+     */    
+    public FastCharToByteBuffer(ByteBuffer buffer) {
+        this(buffer, null);
+    }
+
+    /**
+     * @param buffer Buffer that receives the characters converted to bytes.
+     * @param defaultEncoding Default character encoding to use if setEncoding
+     * is not called.
+     */    
+    public FastCharToByteBuffer(ByteBuffer buffer, String defaultEncoding) {
+        mBuffer = buffer;
+        try {
+            setEncoding(defaultEncoding);
+        }
+        catch (IOException e) {
+        }
+    }
+
+    public void setEncoding(String enc) throws IOException {
+        drain();
+        if (isSupportedEncoding(enc)) {
+            mSlowConvertor = null;
+        }
+        else {
+            mSlowConvertor = new DefaultCharToByteBuffer(mBuffer, enc);
+        }
+    }
+
+    public String getEncoding() throws IOException {
+        return mSlowConvertor != null ?
+            mSlowConvertor.getEncoding() : "ISO-8859-1";
+    }
+
+    public long getBaseByteCount() throws IOException {
+        drain();
+        return mBuffer.getBaseByteCount();
+    }
+
+    public long getByteCount() throws IOException {
+        drain();
+        return mBuffer.getByteCount();
+    }
+
+    public void writeTo(OutputStream out) throws IOException {
+        drain();
+        mBuffer.writeTo(out);
+    }
+
+    public void append(byte b) throws IOException {
+        drain();
+        mBuffer.append(b);
+    }
+
+    public void append(byte[] bytes) throws IOException {
+        append(bytes, 0, bytes.length);
+    }
+
+    public void append(byte[] bytes, int offset, int length)
+        throws IOException
+    {
+        if (length != 0) {
+            drain();
+            mBuffer.append(bytes, offset, length);
+        }
+    }
+
+    public void appendSurrogate(ByteData s) throws IOException {
+        if (s != null) {
+            drain();
+            mBuffer.appendSurrogate(s);
+        }
+    }
+
+    public void addCaptureBuffer(ByteBuffer buffer) throws IOException {
+        drain();
+        mBuffer.addCaptureBuffer(buffer);
+    }
+
+    public void removeCaptureBuffer(ByteBuffer buffer) throws IOException {
+        drain();
+        mBuffer.removeCaptureBuffer(buffer);
+    }
+
+    public void append(char c) throws IOException {
+        char[] chars = getTempChars();
+        chars[0] = c;
+        append(chars, 0, 1);
+    }
+
+    public void append(char[] chars) throws IOException {
+        append(chars, 0, chars.length);
+    }
+
+    public void append(char[] chars, int offset, int length)
+        throws IOException
+    {
+        if (mSlowConvertor != null) {
+            mSlowConvertor.append(chars, offset, length);
+            return;
+        }
+
+        appendFast(chars, offset, length);
+    }
+
+    public void append(String str) throws IOException {
+        append(str, 0, str.length());
+    }
+
+    public void append(String str, int offset, int length) throws IOException {
+        if (mSlowConvertor != null) {
+            mSlowConvertor.append(str, offset, length);
+            return;
+        }
+
+        if (length == 0) {
+            return;
+        }
+
+        char[] tempChars = getTempChars();
+        int bufLen = tempChars.length;
+
+        while (length >= bufLen) {
+            str.getChars(offset, offset + bufLen, tempChars, 0);
+            offset += bufLen;
+            length -= bufLen;
+            appendFast(tempChars, 0, bufLen);
+        }
+
+        if (length > 0) {
+            str.getChars(offset, offset + length, tempChars, 0);
+            appendFast(tempChars, 0, length);
+        }
+    }
+
+    public void reset() throws IOException {
+        mBuffer.reset();
+    }
+
+    public void drain() throws IOException {
+        if (mSlowConvertor != null) {
+            mSlowConvertor.drain();
+        }
+    }
+
+    private void appendFast(char[] chars, int offset, int length)
+        throws IOException
+    {
+        byte[] tempBytes = getTempBytes();
+        int bufLen = tempBytes.length;
+        int bi = 0;
+        int climit = offset + length;
+
+        for (int ci = offset; ci < climit; ci++) {
+            tempBytes[bi++] = (byte)chars[ci];
+            if (bi >= bufLen) {
+                mBuffer.append(tempBytes, 0, bufLen);
+                bi = 0;
+            }
+        }
+
+        if (bi > 0) {
+            mBuffer.append(tempBytes, 0, bi);
+        }
+    }
+
+    private byte[] getTempBytes() {
+        if (mTempBytes == null) {
+            mTempBytes = new byte[TEMP_BUF_LEN];
+        }
+        return mTempBytes;
+    }
+
+    private char[] getTempChars() {
+        if (mTempChars == null) {
+            mTempChars = new char[TEMP_BUF_LEN];
+        }
+        return mTempChars;
+    }
+}