get_values.hh

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/*
** SEAGNAL PROJECT, 2024
** netcdf-assembler
** File description:
** The header file of the get_var_value function
*/
#include <nc_assembler.hh>
 
#ifndef GET_VALUES_HH_
    #define GET_VALUES_HH_
 
var_type get_invalid_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                           size_t *in_ai_count, size_t *in_ai_start);
 
var_type get_byte_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                        size_t *in_ai_count, size_t *in_ai_start);
 
var_type get_char_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                        size_t *in_ai_count, size_t *in_ai_start);
 
var_type get_short_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                         size_t *in_ai_count, size_t *in_ai_start);
 
var_type get_int_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                       size_t *in_ai_count, size_t *in_ai_start);
 
var_type get_float_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                         size_t *in_ai_count, size_t *in_ai_start);
 
var_type get_double_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                          size_t *in_ai_count, size_t *in_ai_start);
 
var_type get_ubyte_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                         size_t *in_ai_count, size_t *in_ai_start);
 
var_type get_ushort_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                          size_t *in_ai_count, size_t *in_ai_start);
 
var_type get_uint_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                        size_t *in_ai_count, size_t *in_ai_start);
 
var_type get_int64_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                         size_t *in_ai_count, size_t *in_ai_start);
 
var_type get_uint64_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                          size_t *in_ai_count, size_t *in_ai_start);
 
var_type get_string_value(file_information_t & in_s_file, variable_information_t & in_s_var,
                          size_t *in_ai_count, size_t *in_ai_start);
 
template <typename T>
T get_var_value(file_information_t & in_s_file, variable_information_t & in_s_current_var,
                size_t *in_ai_start)
{
    static var_type (*get_value_functions[])(file_information_t & in_s_file,
    variable_information_t & in_s_var, size_t *in_ai_count, size_t *in_ai_start) = {
      &get_invalid_value, &get_byte_value, &get_char_value,
      &get_short_value, &get_int_value,
      &get_float_value, &get_double_value, &get_ubyte_value,
      &get_ushort_value, &get_uint_value, &get_int64_value,
      &get_uint64_value, &get_string_value};
    static size_t ai_count[NC_MAX_VAR_DIMS] = {0};
 
    if (ai_count[0] == 0) { 
        for (int32_t i_count_index = 0; i_count_index < NC_MAX_VAR_DIMS; i_count_index++)
            ai_count[i_count_index] = 1;
    }
    return std::get<T>(get_value_functions[in_s_current_var.i_type](in_s_file, in_s_current_var, ai_count, in_ai_start));
}
 
#endif /* GET_VALUES_HH_ */