/**
* ===========================================
* LibFonts : a free Java font reading library
* ===========================================
*
* Project Info: http://jfreereport.pentaho.org/libfonts/
*
* (C) Copyright 2006, by Pentaho Corporation and Contributors.
*
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation;
* either version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* ------------
* $Id: BuiltInJavaEncoding.java,v 1.2 2006/12/03 18:11:59 taqua Exp $
* ------------
* (C) Copyright 2006, by Pentaho Corporation.
*/
package org.jfree.fonts.encoding.manual;
import java.io.UnsupportedEncodingException;
import java.util.Locale;
import org.jfree.fonts.encoding.ByteBuffer;
import org.jfree.fonts.encoding.CodePointBuffer;
import org.jfree.fonts.encoding.Encoding;
import org.jfree.fonts.encoding.EncodingErrorType;
import org.jfree.fonts.encoding.EncodingException;
public class BuiltInJavaEncoding implements Encoding
{
private String name;
private boolean fastMode;
public BuiltInJavaEncoding (String name, final boolean fastMode)
{
if (name == null)
{
throw new NullPointerException();
}
this.name = name;
this.fastMode = fastMode;
}
public CodePointBuffer decode (ByteBuffer text, CodePointBuffer buffer)
throws EncodingException
{
try
{
final byte[] rawData = text.getData();
final String decoded =
new String (rawData, text.getOffset(), text.getLength(), name);
return Utf16LE.getInstance().decodeString(decoded, buffer);
}
catch (UnsupportedEncodingException e)
{
// this should not happen, as the encodings should have been checked by
// the system already ...
throw new EncodingException("Failed to encode the string: " + e.getMessage());
}
}
public CodePointBuffer decode (ByteBuffer text, CodePointBuffer buffer,
EncodingErrorType errorHandling)
throws EncodingException
{
return decode(text, buffer);
}
/**
* Encode, but ignore errors.
*
* @param text
* @param buffer
* @return
*/
public ByteBuffer encode (CodePointBuffer text, ByteBuffer buffer)
throws EncodingException
{
final String javaText =
Utf16LE.getInstance().encodeString(text);
try
{
final byte[] data = javaText.getBytes(name);
final int textLength = text.getLength();
if (buffer == null)
{
buffer = new ByteBuffer(textLength * 2);
}
else if ((buffer.getLength() * 2) < textLength)
{
buffer.ensureSize(textLength * 2);
}
System.arraycopy(data, 0, buffer.getData(), buffer.getOffset(), data.length);
}
catch (UnsupportedEncodingException e)
{
// this should not happen, as the encodings should have been checked by
// the system already ...
throw new EncodingException("Failed to encode the string: " + e.getMessage());
}
return buffer;
}
public ByteBuffer encode (CodePointBuffer text, ByteBuffer buffer,
EncodingErrorType errorHandling)
throws EncodingException
{
return encode(text, buffer);
}
public String getName ()
{
return name;
}
public String getName (Locale locale)
{
return name;
}
public boolean isUnicodeCharacterSupported (int c)
{
// Damn, either fast or dead slow
if (fastMode)
{
return true;
}
// cant test that one ...
if (c == 0x3f) return true;
String testEncoding = ("" + (char) c);
try
{
byte[] bytes = testEncoding.getBytes(name);
if (bytes.length != 1)
{
// Assume that everything went well, as if it didn't,
// it should have created a single-byte sequence
return true;
}
return (0x3f != bytes[0]);
}
catch (UnsupportedEncodingException e)
{
// this should not happen, as the encodings should have been checked by
// the system already ...
throw new IllegalStateException("Failed to encode the string: " + e.getMessage());
}
}
}