public UDecoder() 
{

}

 public  void convert(ByteChunk mb) throws IOException 
{
        convert(mb, true);
}

URLDecode, will modify the source. Includes converting '+' to ' '.

 public  void convert(CharChunk mb) throws IOException 
{
        convert(mb, true);
}

In-buffer processing - the buffer will be modified Includes converting '+' to ' '.

 public  void convert(MessageBytes mb) throws IOException 
{
        convert(mb, true);
}

URLDecode, will modify the source Includes converting '+' to ' '.

 public final String convert(String str) 
{
        return convert(str, true);
}

 public  void convert(ByteChunk mb,
    boolean query) throws IOException 
{
	int start=mb.getOffset();
	byte buff[]=mb.getBytes();
	int end=mb.getEnd();
	int idx= ByteChunk.indexOf( buff, start, end, '%' );
        int idx2=-1;
        if( query )
            idx2= ByteChunk.indexOf( buff, start, end, '+' );
	if( idx< 0 && idx2< 0 ) {
	    return;
	}
	// idx will be the smallest positive inxes ( first % or + )
	if( idx2  >= 0 && idx2 <  idx ) idx=idx2;
	if( idx <  0 ) idx=idx2;
    boolean noSlash = !(ALLOW_ENCODED_SLASH || query);
	for( int j=idx; j< end; j++, idx++ ) {
	    if( buff[ j ] == '+' && query) {
		buff[idx]= (byte)' ' ;
	    } else if( buff[ j ] != '%' ) {
		buff[idx]= buff[j];
	    } else {
		// read next 2 digits
		if( j+2  >= end ) {
		    throw new CharConversionException("EOF");
		}
		byte b1= buff[j+1];
		byte b2=buff[j+2];
		if( !isHexDigit( b1 ) || ! isHexDigit(b2 ))
		    throw new CharConversionException( "isHexDigit");
		j+=2;
		int res=x2c( b1, b2 );
        if (noSlash && (res == '/')) {
            throw new CharConversionException( "noSlash");
        }
		buff[idx]=(byte)res;
	    }
	}
	mb.setEnd( idx );
	return;
}

URLDecode, will modify the source.

 public  void convert(CharChunk mb,
    boolean query) throws IOException 
{
	//	log( "Converting a char chunk ");
	int start=mb.getOffset();
	char buff[]=mb.getBuffer();
	int cend=mb.getEnd();
	int idx= CharChunk.indexOf( buff, start, cend, '%' );
        int idx2=-1;
        if( query )
            idx2= CharChunk.indexOf( buff, start, cend, '+' );
	if( idx< 0 && idx2< 0 ) {
	    return;
	}
	if( idx2  >= 0 && idx2 <  idx ) idx=idx2; 
	if( idx <  0 ) idx=idx2;
	for( int j=idx; j< cend; j++, idx++ ) {
	    if( buff[ j ] == '+' && query ) {
		buff[idx]=( ' ' );
	    } else if( buff[ j ] != '%' ) {
		buff[idx]=buff[j];
	    } else {
		// read next 2 digits
		if( j+2  >= cend ) {
		    // invalid
		    throw new CharConversionException("EOF");
		}
		char b1= buff[j+1];
		char b2=buff[j+2];
		if( !isHexDigit( b1 ) || ! isHexDigit(b2 ))
		    throw new CharConversionException("isHexDigit");
		j+=2;
		int res=x2c( b1, b2 );
		buff[idx]=(char)res;
	    }
	}
	mb.setEnd( idx );
}

In-buffer processing - the buffer will be modified

 public  void convert(MessageBytes mb,
    boolean query) throws IOException 
{
	
	switch (mb.getType()) {
	case MessageBytes.T_STR:
	    String strValue=mb.toString();
	    if( strValue==null ) return;
	    mb.setString( convert( strValue, query ));
	    break;
	case MessageBytes.T_CHARS:
	    CharChunk charC=mb.getCharChunk();
	    convert( charC, query );
	    break;
	case MessageBytes.T_BYTES:
	    ByteChunk bytesC=mb.getByteChunk();
	    convert( bytesC, query );
	    break;
	}
}

URLDecode, will modify the source

 public final String convert(String str,
    boolean query) 
{
        if (str == null)  return  null;
	if( (!query || str.indexOf( '+' ) <  0) && str.indexOf( '%' ) <  0 )
	    return str;
        StringBuffer dec = new StringBuffer();    // decoded string output
        int strPos = 0;
        int strLen = str.length();
        dec.ensureCapacity(str.length());
        while (strPos <  strLen) {
            int laPos;        // lookahead position
            // look ahead to next URLencoded metacharacter, if any
            for (laPos = strPos; laPos <  strLen; laPos++) {
                char laChar = str.charAt(laPos);
                if ((laChar == '+' && query) || (laChar == '%')) {
                    break;
                }
            }
            // if there were non-metacharacters, copy them all as a block
            if (laPos  > strPos) {
                dec.append(str.substring(strPos,laPos));
                strPos = laPos;
            }
            // shortcut out of here if we're at the end of the string
            if (strPos  >= strLen) {
                break;
            }
            // process next metacharacter
            char metaChar = str.charAt(strPos);
            if (metaChar == '+') {
                dec.append(' ');
                strPos++;
                continue;
            } else if (metaChar == '%') {
		// We throw the original exception - the super will deal with
		// it
		//                try {
		dec.append((char)Integer.
			   parseInt(str.substring(strPos + 1, strPos + 3),16));
                strPos += 3;
            }
        }
        return dec.toString();
}