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/* Woodstox XML processor
*
* Copyright (c) 2004- Tatu Saloranta, [email protected]
*
* Licensed under the License specified in file LICENSE, included with
* the source code.
* You may not use this file except in compliance with the License.
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.ctc.wstx.sw;
import java.io.*;
/**
* This is a simple wrapper class, which decorates an {@link XmlWriter}
* to look like a Writer. This is necessary to implement a (legacy)
* character quoting system introduced for Woodstox 2.0, which relies
* on having a Writer to use for outputting.
*/
public abstract class XmlWriterWrapper
extends Writer
{
protected final XmlWriter mWriter;
private char[] mBuffer = null;
public static XmlWriterWrapper wrapWriteRaw(XmlWriter xw)
{
return new RawWrapper(xw);
}
public static XmlWriterWrapper wrapWriteCharacters(XmlWriter xw)
{
return new TextWrapper(xw);
}
protected XmlWriterWrapper(XmlWriter writer)
{
mWriter = writer;
}
public final void close()
throws IOException
{
mWriter.close();
}
public final void flush()
throws IOException
{
mWriter.close();
}
/* !!! 30-Nov-2006, TSa: Due to co-variance between Appendable and
* Writer, this would not compile with javac 1.5, in 1.4 mode
* (source and target set to "1.4". Not a huge deal, but since
* the base impl is just fine, no point in overriding it.
*/
/*
public final Writer append(char c)
throws IOException
{
if (mBuffer == null) {
mBuffer = new char[1];
}
mBuffer[0] = (char) c;
write(mBuffer, 0, 1);
return this;
}
*/
public final void write(char[] cbuf)
throws IOException
{
write(cbuf, 0, cbuf.length);
}
public abstract void write(char[] cbuf, int off, int len)
throws IOException;
public final void write(int c)
throws IOException
{
if (mBuffer == null) {
mBuffer = new char[1];
}
mBuffer[0] = (char) c;
write(mBuffer, 0, 1);
}
public abstract void write(String str)
throws IOException;
public abstract void write(String str, int off, int len)
throws IOException;
/*
//////////////////////////////////////////////////
// Implementation classes
//////////////////////////////////////////////////
*/
/**
* This wrapper directs calls to writeRaw methods. Thus,
* it is a "vanilla" writer, and no escaping is done.
*/
private final static class RawWrapper
extends XmlWriterWrapper
{
protected RawWrapper(XmlWriter writer)
{
super(writer);
}
public void write(char[] cbuf, int off, int len)
throws IOException
{
mWriter.writeRaw(cbuf, off, len);
}
public void write(String str, int off, int len)
throws IOException
{
mWriter.writeRaw(str, off, len);
}
public final void write(String str)
throws IOException
{
mWriter.writeRaw(str, 0, str.length());
}
}
/**
* This wrapper directs calls to writeCharacters methods.
* This means that text content escaping (and, possibly, validation)
* is done, using default or custom escaping code.
*/
private static class TextWrapper
extends XmlWriterWrapper
{
protected TextWrapper(XmlWriter writer)
{
super(writer);
}
public void write(char[] cbuf, int off, int len)
throws IOException
{
mWriter.writeCharacters(cbuf, off, len);
}
public void write(String str)
throws IOException
{
mWriter.writeCharacters(str);
}
public void write(String str, int off, int len)
throws IOException
{
mWriter.writeCharacters(str.substring(off, off+len));
}
}
}
