/*
 * (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_gen
   IMPLEMENTS = init;unpack_string; get_native_type
   MEMBERS    = const char* codetable
   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 get_native_type(grib_accessor*);
static int unpack_string(grib_accessor*, char*, size_t* len);
static void init(grib_accessor*, const long, grib_arguments*);
static void init_class(grib_accessor_class*);

typedef struct grib_accessor_codetable_title
{
    grib_accessor att;
    /* Members defined in gen */
    /* Members defined in codetable_title */
    const char* codetable;
} grib_accessor_codetable_title;

extern grib_accessor_class* grib_accessor_class_gen;

static grib_accessor_class _grib_accessor_class_codetable_title = {
    &grib_accessor_class_gen,              /* super                     */
    "codetable_title",                     /* name                      */
    sizeof(grib_accessor_codetable_title), /* 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           */
    &get_native_type,                      /* get native type               */
    0,                                     /* get sub_section                */
    0,                                     /* grib_pack procedures long      */
    0,                                     /* grib_pack procedures long      */
    0,                                     /* grib_pack procedures long      */
    0,                                     /* grib_unpack procedures long    */
    0,                                     /* grib_pack procedures double    */
    0,                                     /* grib_unpack procedures double  */
    0,                                     /* grib_pack procedures string    */
    &unpack_string,                        /* 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_codetable_title = &_grib_accessor_class_codetable_title;


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->sub_section            = (*(c->super))->sub_section;
    c->pack_missing           = (*(c->super))->pack_missing;
    c->is_missing             = (*(c->super))->is_missing;
    c->pack_long              = (*(c->super))->pack_long;
    c->unpack_long            = (*(c->super))->unpack_long;
    c->pack_double            = (*(c->super))->pack_double;
    c->unpack_double          = (*(c->super))->unpack_double;
    c->pack_string            = (*(c->super))->pack_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 */

typedef struct grib_accessor_codetable
{
    grib_accessor att;
    /* Members defined in gen */
    /* Members defined in long */
    /* Members defined in unsigned */
    long nbytes;
    grib_arguments* arg;
    /* Members defined in codetable */
    const char* tablename;
    const char* masterDir;
    const char* localDir;
    grib_codetable* table;
} grib_accessor_codetable;


static void init(grib_accessor* a, const long len, grib_arguments* params)
{
    grib_accessor_codetable_title* self = (grib_accessor_codetable_title*)a;
    int n                               = 0;
    self->codetable                     = grib_arguments_get_name(grib_handle_of_accessor(a), params, n++);
    a->length                           = 0;
    a->flags |= GRIB_ACCESSOR_FLAG_READ_ONLY;
}

static int get_native_type(grib_accessor* a)
{
    return GRIB_TYPE_STRING;
}

static int unpack_string(grib_accessor* a, char* buffer, size_t* len)
{
    grib_accessor_codetable_title* self = (grib_accessor_codetable_title*)a;
    grib_codetable* table               = NULL;

    size_t size = 1;
    long value;
    int err = GRIB_SUCCESS;
    char tmp[1024];
    size_t l                    = 1024;
    grib_accessor_codetable* ca = (grib_accessor_codetable*)grib_find_accessor(grib_handle_of_accessor(a), self->codetable);

    if ((err = grib_unpack_long((grib_accessor*)ca, &value, &size)) != GRIB_SUCCESS)
        return err;

    table = ca->table;

    if (table && (value >= 0) && (value < table->size) && table->entries[value].title) {
        strcpy(tmp, table->entries[value].title);
    }
    else {
#if 1
        sprintf(tmp, "%d", (int)value);
#else
        return GRIB_DECODING_ERROR;
#endif
    }

    l = strlen(tmp) + 1;

    if (*len < l) {
        *len = l;
        return GRIB_BUFFER_TOO_SMALL;
    }

    strcpy(buffer, tmp);
    *len = l;

    return GRIB_SUCCESS;
}
