Line data    Source code

       1             : /**
       2             :  *
       3             :  *    Copyright (c) 2020 Project CHIP Authors
       4             :  *
       5             :  *    Licensed under the Apache License, Version 2.0 (the "License");
       6             :  *    you may not use this file except in compliance with the License.
       7             :  *    You may obtain a copy of the License at
       8             :  *
       9             :  *        http://www.apache.org/licenses/LICENSE-2.0
      10             :  *
      11             :  *    Unless required by applicable law or agreed to in writing, software
      12             :  *    distributed under the License is distributed on an "AS IS" BASIS,
      13             :  *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      14             :  *    See the License for the specific language governing permissions and
      15             :  *    limitations under the License.
      16             :  */
      17             : 
      18             : #include <app/util/af.h>
      19             : #include <app/util/util.h>
      20             : #include <lib/core/CHIPEncoding.h>
      21             : 
      22             : using namespace chip;
      23             : 
      24           0 : uint8_t emberAfStringLength(const uint8_t * buffer)
      25             : {
      26             :     // The first byte specifies the length of the string.  A length of 0xFF means
      27             :     // the string is invalid and there is no character data.
      28           0 :     return (buffer[0] == 0xFF ? 0 : buffer[0]);
      29             : }
      30             : 
      31           0 : uint16_t emberAfLongStringLength(const uint8_t * buffer)
      32             : {
      33             :     // The first two bytes specify the length of the long string.  A length of
      34             :     // 0xFFFF means the string is invalid and there is no character data.
      35           0 :     uint16_t length = Encoding::LittleEndian::Get16(buffer);
      36           0 :     return (length == 0xFFFF ? 0 : length);
      37             : }