text: /**
   * Copyright (c) 2015 - 2018, Nordic Semiconductor ASA
   * 
   * All rights reserved.
   * 
   * Redistribution and use in source and binary forms, with or without modification,
   * are permitted provided that the following conditions are met:
   * 
   * 1. Redistributions of source code must retain the above copyright notice, this
   *    list of conditions and the following disclaimer.
   * 
   * 2. Redistributions in binary form, except as embedded into a Nordic
   *    Semiconductor ASA integrated circuit in a product or a software update for
   *    such product, must reproduce the above copyright notice, this list of
   *    conditions and the following disclaimer in the documentation and/or other
   *    materials provided with the distribution.
   * 
   * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
   *    contributors may be used to endorse or promote products derived from this
   *    software without specific prior written permission.
   * 
   * 4. This software, with or without modification, must only be used with a
   *    Nordic Semiconductor ASA integrated circuit.
   * 
   * 5. Any software provided in binary form under this license must not be reverse
   *    engineered, decompiled, modified and/or disassembled.
   * 
   * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
   * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
   * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
   * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   * 
   */
  #include "sdk_common.h"
  #if NRF_MODULE_ENABLED(NFC_NDEF_TEXT_RECORD)
  
  #include <string.h>
  #include "nfc_text_rec.h"
  #include "nrf_error.h"
  
  #define TEXT_REC_STATUS_SIZE          1     ///< Size of the status.
  #define TEXT_REC_STATUS_UTF_POS       7     ///< Position of a character encoding type.
  #define TEXT_REC_RESERVED_POS         6     ///< Reserved position.
  
  const uint8_t nfc_text_rec_type_field[] = {'T'};
  
  
  /**
   * @brief Function for calculating payload size.
   */
  __STATIC_INLINE uint32_t nfc_text_rec_payload_size_get(nfc_text_rec_payload_desc_t * p_nfc_rec_text_payload_desc)
  {
      return (TEXT_REC_STATUS_SIZE
            + p_nfc_rec_text_payload_desc->lang_code_len
            + p_nfc_rec_text_payload_desc->data_len);
  }
  
  ret_code_t nfc_text_rec_payload_constructor(nfc_text_rec_payload_desc_t * p_nfc_rec_text_payload_desc,
                                              uint8_t                     * p_buff,
                                              uint32_t                    * p_len)
  {
      if ((p_nfc_rec_text_payload_desc->lang_code_len == 0)
       || (p_nfc_rec_text_payload_desc->lang_code_len & (1 << TEXT_REC_RESERVED_POS))
       || (p_nfc_rec_text_payload_desc->lang_code_len & (1 << TEXT_REC_STATUS_UTF_POS))
       || (p_nfc_rec_text_payload_desc->p_lang_code   == NULL)
       || (p_nfc_rec_text_payload_desc->data_len      == 0)
       || (p_nfc_rec_text_payload_desc->p_data        == NULL)
       || (p_len                                      == NULL))
      {
          return NRF_ERROR_INVALID_PARAM;
      }
  
      uint32_t payload_size = nfc_text_rec_payload_size_get(p_nfc_rec_text_payload_desc);
  
      if (p_buff != NULL)
      {
          if (payload_size > *p_len)
          {
              return NRF_ERROR_NO_MEM;
          }
  
          *p_buff = (p_nfc_rec_text_payload_desc->lang_code_len
                  + (p_nfc_rec_text_payload_desc->utf << TEXT_REC_STATUS_UTF_POS));
          p_buff += TEXT_REC_STATUS_SIZE;
  
          memcpy(p_buff,
              p_nfc_rec_text_payload_desc->p_lang_code,
              p_nfc_rec_text_payload_desc->lang_code_len);
          p_buff += p_nfc_rec_text_payload_desc->lang_code_len;
  
          memcpy(p_buff,
              p_nfc_rec_text_payload_desc->p_data,
              p_nfc_rec_text_payload_desc->data_len);
      }
  
      *p_len = payload_size;
  
      return NRF_SUCCESS;
  }
  
  #endif // NRF_MODULE_ENABLED(NFC_NDEF_TEXT_RECORD)
  