/*
 * (C) Copyright 2005- ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 *
 * In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
 * virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
 */

#include "grib_api_internal.h"
/* 
   This is used by make_class.pl

   START_CLASS_DEF
   CLASS      = accessor
   SUPER      = grib_accessor_class_long
   IMPLEMENTS = pack_long;unpack_long
   IMPLEMENTS = init
   MEMBERS    = const char* table
   MEMBERS    = const char* parameter 
   END_CLASS_DEF

 */

/* START_CLASS_IMP */

/*

Don't edit anything between START_CLASS_IMP and END_CLASS_IMP
Instead edit values between START_CLASS_DEF and END_CLASS_DEF
or edit "accessor.class" and rerun ./make_class.pl

*/

static int pack_long(grib_accessor*, const long* val, size_t* len);
static int unpack_long(grib_accessor*, long* val, size_t* len);
static void init(grib_accessor*, const long, grib_arguments*);
static void init_class(grib_accessor_class*);

typedef struct grib_accessor_g1param
{
    grib_accessor att;
    /* Members defined in gen */
    /* Members defined in long */
    /* Members defined in g1param */
    const char* table;
    const char* parameter;
} grib_accessor_g1param;

extern grib_accessor_class* grib_accessor_class_long;

static grib_accessor_class _grib_accessor_class_g1param = {
    &grib_accessor_class_long,     /* super                     */
    "g1param",                     /* name                      */
    sizeof(grib_accessor_g1param), /* size                      */
    0,                             /* inited */
    &init_class,                   /* init_class */
    &init,                         /* init                      */
    0,                             /* post_init                      */
    0,                             /* free mem                       */
    0,                             /* describes himself         */
    0,                             /* get length of section     */
    0,                             /* get length of string      */
    0,                             /* get number of values      */
    0,                             /* get number of bytes      */
    0,                             /* get offset to bytes           */
    0,                             /* get native type               */
    0,                             /* get sub_section                */
    0,                             /* grib_pack procedures long      */
    0,                             /* grib_pack procedures long      */
    &pack_long,                    /* grib_pack procedures long      */
    &unpack_long,                  /* grib_unpack procedures long    */
    0,                             /* grib_pack procedures double    */
    0,                             /* grib_unpack procedures double  */
    0,                             /* grib_pack procedures string    */
    0,                             /* grib_unpack procedures string  */
    0,                             /* grib_pack array procedures string    */
    0,                             /* grib_unpack array procedures string  */
    0,                             /* grib_pack procedures bytes     */
    0,                             /* grib_unpack procedures bytes   */
    0,                             /* pack_expression */
    0,                             /* notify_change   */
    0,                             /* update_size   */
    0,                             /* preferred_size   */
    0,                             /* resize   */
    0,                             /* nearest_smaller_value */
    0,                             /* next accessor    */
    0,                             /* compare vs. another accessor   */
    0,                             /* unpack only ith value          */
    0,                             /* unpack a subarray         */
    0,                             /* clear          */
    0,                             /* clone accessor          */
};


grib_accessor_class* grib_accessor_class_g1param = &_grib_accessor_class_g1param;


static void init_class(grib_accessor_class* c)
{
    c->dump                   = (*(c->super))->dump;
    c->next_offset            = (*(c->super))->next_offset;
    c->string_length          = (*(c->super))->string_length;
    c->value_count            = (*(c->super))->value_count;
    c->byte_count             = (*(c->super))->byte_count;
    c->byte_offset            = (*(c->super))->byte_offset;
    c->get_native_type        = (*(c->super))->get_native_type;
    c->sub_section            = (*(c->super))->sub_section;
    c->pack_missing           = (*(c->super))->pack_missing;
    c->is_missing             = (*(c->super))->is_missing;
    c->pack_double            = (*(c->super))->pack_double;
    c->unpack_double          = (*(c->super))->unpack_double;
    c->pack_string            = (*(c->super))->pack_string;
    c->unpack_string          = (*(c->super))->unpack_string;
    c->pack_string_array      = (*(c->super))->pack_string_array;
    c->unpack_string_array    = (*(c->super))->unpack_string_array;
    c->pack_bytes             = (*(c->super))->pack_bytes;
    c->unpack_bytes           = (*(c->super))->unpack_bytes;
    c->pack_expression        = (*(c->super))->pack_expression;
    c->notify_change          = (*(c->super))->notify_change;
    c->update_size            = (*(c->super))->update_size;
    c->preferred_size         = (*(c->super))->preferred_size;
    c->resize                 = (*(c->super))->resize;
    c->nearest_smaller_value  = (*(c->super))->nearest_smaller_value;
    c->next                   = (*(c->super))->next;
    c->compare                = (*(c->super))->compare;
    c->unpack_double_element  = (*(c->super))->unpack_double_element;
    c->unpack_double_subarray = (*(c->super))->unpack_double_subarray;
    c->clear                  = (*(c->super))->clear;
    c->make_clone             = (*(c->super))->make_clone;
}

/* END_CLASS_IMP */

static void init(grib_accessor* a, const long l, grib_arguments* c)
{
    grib_accessor_g1param* self = (grib_accessor_g1param*)a;
    int n                       = 0;
    self->parameter             = grib_arguments_get_name(grib_handle_of_accessor(a), c, n++);
    self->table                 = grib_arguments_get_name(grib_handle_of_accessor(a), c, n++);
}

static int pack_long(grib_accessor* a, const long* val, size_t* len)
{
    grib_accessor_g1param* self = (grib_accessor_g1param*)a;
    long parameter              = *val % 1000;
    long table                  = *val / 1000;
    int err                     = 0;

    if (table == 0)
        table = 128;

    err = grib_set_long_internal(grib_handle_of_accessor(a), self->parameter, parameter);
    if (err)
        return err;

    err = grib_set_long_internal(grib_handle_of_accessor(a), self->table, table);
    return err;
}

static int unpack_long(grib_accessor* a, long* val, size_t* len)
{
    grib_accessor_g1param* self = (grib_accessor_g1param*)a;
    int err                     = GRIB_SUCCESS;
    /* size_t l = 0; */
    long parameter = 0;
    long table     = 0;

    err = grib_get_long_internal(grib_handle_of_accessor(a), self->parameter, &parameter);
    if (err)
        return err;

    err = grib_get_long_internal(grib_handle_of_accessor(a), self->table, &table);
    if (err)
        return err;

    if (*len < 1)
        return GRIB_BUFFER_TOO_SMALL;


    *len = 1;


    if (table == 128)
        *val = parameter;
    else
        *val = table * 1000 + parameter;


    return GRIB_SUCCESS;
}
