/*
 * (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.
 */

/**************************************
 *  Enrico Fucile
 **************************************/

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

   START_CLASS_DEF
   CLASS      = accessor
   SUPER      = grib_accessor_class_bytes
   IMPLEMENTS = init;update_size;resize; value_count
   IMPLEMENTS = compare;string_length;byte_count
   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 size_t string_length(grib_accessor*);
static long byte_count(grib_accessor*);
static int value_count(grib_accessor*, long*);
static void init(grib_accessor*, const long, grib_arguments*);
static void init_class(grib_accessor_class*);
static void update_size(grib_accessor*, size_t);
static void resize(grib_accessor*, size_t);
static int compare(grib_accessor*, grib_accessor*);

typedef struct grib_accessor_padding
{
    grib_accessor att;
    /* Members defined in gen */
    /* Members defined in bytes */
    /* Members defined in padding */
} grib_accessor_padding;

extern grib_accessor_class* grib_accessor_class_bytes;

static grib_accessor_class _grib_accessor_class_padding = {
    &grib_accessor_class_bytes,    /* super                     */
    "padding",                     /* name                      */
    sizeof(grib_accessor_padding), /* size                      */
    0,                             /* inited */
    &init_class,                   /* init_class */
    &init,                         /* init                      */
    0,                             /* post_init                      */
    0,                             /* free mem                       */
    0,                             /* describes himself         */
    0,                             /* get length of section     */
    &string_length,                /* get length of string      */
    &value_count,                  /* get number of values      */
    &byte_count,                   /* 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      */
    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    */
    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   */
    &update_size,                  /* update_size   */
    0,                             /* preferred_size   */
    &resize,                       /* resize   */
    0,                             /* nearest_smaller_value */
    0,                             /* next accessor    */
    &compare,                      /* compare vs. another accessor   */
    0,                             /* unpack only ith value          */
    0,                             /* unpack a subarray         */
    0,                             /* clear          */
    0,                             /* clone accessor          */
};


grib_accessor_class* grib_accessor_class_padding = &_grib_accessor_class_padding;


static void init_class(grib_accessor_class* c)
{
    c->dump                   = (*(c->super))->dump;
    c->next_offset            = (*(c->super))->next_offset;
    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_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->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->preferred_size         = (*(c->super))->preferred_size;
    c->nearest_smaller_value  = (*(c->super))->nearest_smaller_value;
    c->next                   = (*(c->super))->next;
    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 len, grib_arguments* arg)
{
    a->flags |= GRIB_ACCESSOR_FLAG_EDITION_SPECIFIC;
    a->flags |= GRIB_ACCESSOR_FLAG_READ_ONLY;
}

static int compare(grib_accessor* a, grib_accessor* b)
{
    if (a->length != b->length)
        return GRIB_COUNT_MISMATCH;
    return GRIB_SUCCESS;
}

static void update_size(grib_accessor* a, size_t new_size)
{
    /* printf("update_size: grib_accessor_class_padding.c %ld %ld %s %s\n", (long)new_size,(long)a->length,a->cclass->name,a->name); */
    a->length = new_size;
}

static void resize(grib_accessor* a, size_t new_size)
{
    void* zero = grib_context_malloc_clear(a->context, new_size);

    grib_buffer_replace(a, (const unsigned char*)zero, new_size, 1, 0);
    grib_context_free(a->context, zero);
    grib_context_log(a->context, GRIB_LOG_DEBUG, "resize: grib_accessor_class_padding.c %ld %ld %s %s\n", (long)new_size, (long)a->length, a->cclass->name, a->name);
    Assert(new_size == a->length);
}

static int value_count(grib_accessor* a, long* c)
{
    *c = a->length;
    return 0;
}
static long byte_count(grib_accessor* a)
{
    return a->length;
}
static size_t string_length(grib_accessor* a)
{
    return (size_t)a->length;
}
