static HTTPStatus_t addRangeHeader()

in source/core_http_client.c [1420:1482]
39 lines of code
3 McCabe index (conditional complexity)

static HTTPStatus_t addRangeHeader( HTTPRequestHeaders_t * pRequestHeaders,
                                    int32_t rangeStartOrlastNbytes,
                                    int32_t rangeEnd )
{
    HTTPStatus_t returnStatus = HTTPSuccess;
    char rangeValueBuffer[ HTTP_MAX_RANGE_REQUEST_VALUE_LEN ];
    size_t rangeValueLength = 0U;

    assert( pRequestHeaders != NULL );

    /* This buffer uses a char type instead of the general purpose uint8_t
     * because the range value expected to be written is within the ASCII
     * character set. */
    ( void ) memset( rangeValueBuffer, 0, HTTP_MAX_RANGE_REQUEST_VALUE_LEN );

    /* Generate the value data for the Range Request header.*/

    /* Write the range value prefix in the buffer. */
    ( void ) strncpy( rangeValueBuffer,
                      HTTP_RANGE_REQUEST_HEADER_VALUE_PREFIX,
                      HTTP_RANGE_REQUEST_HEADER_VALUE_PREFIX_LEN );
    rangeValueLength += HTTP_RANGE_REQUEST_HEADER_VALUE_PREFIX_LEN;

    /* Write the range start value in the buffer. */
    rangeValueLength += convertInt32ToAscii( rangeStartOrlastNbytes,
                                             rangeValueBuffer + rangeValueLength,
                                             sizeof( rangeValueBuffer ) - rangeValueLength );

    /* Add remaining value data depending on the range specification type. */

    /* Add rangeEnd value if request is for [rangeStart, rangeEnd] byte range */
    if( rangeEnd != HTTP_RANGE_REQUEST_END_OF_FILE )
    {
        /* Write the "-" character to the buffer.*/
        *( rangeValueBuffer + rangeValueLength ) = DASH_CHARACTER;
        rangeValueLength += DASH_CHARACTER_LEN;

        /* Write the rangeEnd value of the request range to the buffer. */
        rangeValueLength += convertInt32ToAscii( rangeEnd,
                                                 rangeValueBuffer + rangeValueLength,
                                                 sizeof( rangeValueBuffer ) - rangeValueLength );
    }
    /* Case when request is for bytes in the range [rangeStart, EoF). */
    else if( rangeStartOrlastNbytes >= 0 )
    {
        /* Write the "-" character to the buffer.*/
        *( rangeValueBuffer + rangeValueLength ) = DASH_CHARACTER;
        rangeValueLength += DASH_CHARACTER_LEN;
    }
    else
    {
        /* Empty else MISRA 15.7 */
    }

    /* Add the Range Request header field and value to the buffer. */
    returnStatus = addHeader( pRequestHeaders,
                              HTTP_RANGE_REQUEST_HEADER_FIELD,
                              HTTP_RANGE_REQUEST_HEADER_FIELD_LEN,
                              rangeValueBuffer,
                              rangeValueLength );

    return returnStatus;
}