- /*
- * The Apache Software License, Version 1.1
- *
- *
- * Copyright (c) 1999 The Apache Software Foundation. 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
- * 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 "Xalan" 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 (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.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation and was
- * originally based on software copyright (c) 1999, Lotus
- * Development Corporation., http://www.lotus.com. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- package org.apache.xalan.serialize;
-
- import java.io.*;
-
- /**
- * This class writes ASCII to a byte stream as quickly as possible. For the
- * moment it does not do buffering, though I reserve the right to do some
- * buffering down the line if I can prove that it will be faster even if the
- * output stream is buffered.
- */
- public class WriterToUTF8 extends Writer
- {
-
- /** The byte stream to write to. */
- private final OutputStream m_os;
-
- /**
- * Create an unbuffered UTF-8 writer.
- *
- *
- * @param os The byte stream to write to.
- *
- * @throws UnsupportedEncodingException
- */
- public WriterToUTF8(OutputStream os) throws UnsupportedEncodingException
- {
- m_os = os;
- }
-
- /**
- * Write a single character. The character to be written is contained in
- * the 16 low-order bits of the given integer value; the 16 high-order bits
- * are ignored.
- *
- * <p> Subclasses that intend to support efficient single-character output
- * should override this method.
- *
- * @param c int specifying a character to be written.
- * @exception IOException If an I/O error occurs
- */
- public void write(final int c) throws IOException
- {
-
- if (c < 0x80)
- m_os.write(c);
- else if (c < 0x800)
- {
- m_os.write(0xc0 + (c >> 6));
- m_os.write(0x80 + (c & 0x3f));
- }
- else
- {
- m_os.write(0xe0 + (c >> 12));
- m_os.write(0x80 + ((c >> 6) & 0x3f));
- m_os.write(0x80 + (c & 0x3f));
- }
- }
-
- /**
- * Write a portion of an array of characters.
- *
- * @param chars Array of characters
- * @param start Offset from which to start writing characters
- * @param length Number of characters to write
- *
- * @exception IOException If an I/O error occurs
- *
- * @throws java.io.IOException
- */
- public void write(final char chars[], final int start, final int length)
- throws java.io.IOException
- {
-
- final OutputStream os = m_os;
-
- int n = length+start;
- for (int i = start; i < n; i++)
- {
- final char c = chars[i];
-
- if (c < 0x80)
- os.write(c);
- else if (c < 0x800)
- {
- os.write(0xc0 + (c >> 6));
- os.write(0x80 + (c & 0x3f));
- }
- else
- {
- os.write(0xe0 + (c >> 12));
- os.write(0x80 + ((c >> 6) & 0x3f));
- os.write(0x80 + (c & 0x3f));
- }
- }
- }
-
- /**
- * Write a string.
- *
- * @param s String to be written
- *
- * @exception IOException If an I/O error occurs
- */
- public void write(final String s) throws IOException
- {
-
- final int n = s.length();
- final OutputStream os = m_os;
-
- for (int i = 0; i < n; i++)
- {
- final char c = s.charAt(i);
-
- if (c < 0x80)
- os.write(c);
- else if (c < 0x800)
- {
- os.write(0xc0 + (c >> 6));
- os.write(0x80 + (c & 0x3f));
- }
- else
- {
- os.write(0xe0 + (c >> 12));
- os.write(0x80 + ((c >> 6) & 0x3f));
- os.write(0x80 + (c & 0x3f));
- }
- }
- }
-
- /**
- * Flush the stream. If the stream has saved any characters from the
- * various write() methods in a buffer, write them immediately to their
- * intended destination. Then, if that destination is another character or
- * byte stream, flush it. Thus one flush() invocation will flush all the
- * buffers in a chain of Writers and OutputStreams.
- *
- * @exception IOException If an I/O error occurs
- *
- * @throws java.io.IOException
- */
- public void flush() throws java.io.IOException
- {
- m_os.flush();
- }
-
- /**
- * Close the stream, flushing it first. Once a stream has been closed,
- * further write() or flush() invocations will cause an IOException to be
- * thrown. Closing a previously-closed stream, however, has no effect.
- *
- * @exception IOException If an I/O error occurs
- *
- * @throws java.io.IOException
- */
- public void close() throws java.io.IOException
- {
- m_os.close();
- }
-
- /**
- * Get the output stream where the events will be serialized to.
- *
- * @return reference to the result stream, or null of only a writer was
- * set.
- */
- public OutputStream getOutputStream()
- {
- return m_os;
- }
- }