public CJKConverter(String encoding) 
{
        encodingName = encoding;
        charsetName = CJKEncodings.getCharset(encoding);
}

Constructs a CJKConverter from a PDF encoding name.

Parameters:

encoding - the encoding to be used

 public String convertBytes(byte[] c,
    int offset,
    int length,
    CMap cmap) 
{
        if ( cmap != null ) 
        {
            try 
            {
                if ( cmap.isInCodeSpaceRanges(c, offset, length) )
                {
                    return new String(c, offset, length, charsetName);
                }
                else
                {
                    return null;
                }
            }
            catch ( UnsupportedEncodingException uee ) 
            {
                return new String(c, offset, length);
            }
        }
        // No cmap?
        return null;
}

Convert bytes to a string. We just convert bytes within coderange defined in CMap. {@inheritDoc}

 public String convertString(String s) 
{
        if ( s.length() == 1 )
        {
            return s;
        }
        if ( charsetName.equalsIgnoreCase("UTF-16BE") )
        {
            return s;
        }
        try 
        {
            return new String(s.getBytes("UTF-16BE"), charsetName);
        }
        catch ( UnsupportedEncodingException uee ) 
        {
            return s;   
        }
}

Convert a string. It occurs when a cmap lookup returned converted bytes successfully, but we still need to convert its encoding. The parameter s is constructs as one byte or a UTF-16BE encoded string. Note: pdfbox set string to UTF-16BE charset before calling into this. {@inheritDoc}