private int splitOutputFile(final File tempOutputFile,
                                final File outputFolder) throws IOException {
        //output should be words_1.dict....words_n.dict
        InputStream inputStream = new FileInputStream(tempOutputFile);
        int file_postfix = 0;
        int current_output_file_size = 0;
        byte[] buffer = new byte[4 * 1024];
        OutputStream outputStream = null;
        int read = 0;
        XmlWriter xml = new XmlWriter(dict_id_array);
        xml.writeEntity("resources");
        xml.writeEntity("array").writeAttribute("name", "words_dict_array");

        while ((read = inputStream.read(buffer)) > 0) {
            if (outputStream != null && current_output_file_size >= DICT_FILE_CHUNK_SIZE) {
                outputStream.flush();
                outputStream.close();
                outputStream = null;
            }

            if (outputStream == null) {
                file_postfix++;
                xml.writeEntity("item").writeText("@raw/words_"+file_postfix).endEntity();
                current_output_file_size = 0;
                File chunkFile = new File(outputFolder, "words_" + file_postfix + ".dict");
                outputStream = new FileOutputStream(chunkFile);
                System.out.println("Writing to dict file " + chunkFile.getAbsolutePath());
            }

            outputStream.write(buffer, 0, read);
            current_output_file_size += read;
        }

        xml.endEntity();
        xml.endEntity();
        xml.close();

        inputStream.close();
        if (outputStream != null) {
            outputStream.flush();
            outputStream.close();
        }
        System.out.println("Done. Wrote " + file_postfix + " files.");

        return file_postfix;
    }