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/*
* Copyright 2005-2016 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 = unpack_long;pack_long
IMPLEMENTS = init;dump
MEMBERS = const char* owner
MEMBERS = int bit_index
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 dump(grib_accessor*, grib_dumper*);
static void init(grib_accessor*,const long, grib_arguments* );
static void init_class(grib_accessor_class*);
typedef struct grib_accessor_bit {
grib_accessor att;
/* Members defined in gen */
/* Members defined in long */
/* Members defined in bit */
const char* owner;
int bit_index;
} grib_accessor_bit;
extern grib_accessor_class* grib_accessor_class_long;
static grib_accessor_class _grib_accessor_class_bit = {
&grib_accessor_class_long, /* super */
"bit", /* name */
sizeof(grib_accessor_bit), /* size */
0, /* inited */
&init_class, /* init_class */
&init, /* init */
0, /* post_init */
0, /* free mem */
&dump, /* 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 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 */
};
grib_accessor_class* grib_accessor_class_bit = &_grib_accessor_class_bit;
static void init_class(grib_accessor_class* c)
{
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_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;
}
/* END_CLASS_IMP */
static void init(grib_accessor* a, const long len , grib_arguments* arg )
{
grib_accessor_bit *ac = (grib_accessor_bit*) a;
a->length = 0;
ac->owner = grib_arguments_get_name(a->parent->h,arg,0);
ac->bit_index = grib_arguments_get_long(a->parent->h,arg,1);
}
static void dump(grib_accessor* a, grib_dumper* dumper)
{
grib_dump_long(dumper,a,NULL);
}
static int unpack_long (grib_accessor* a, long* val, size_t *len)
{
grib_accessor_bit *ac = (grib_accessor_bit*) a;
int ret = 0;
long data = 0;
if(*len < 1)
{
grib_context_log(a->parent->h->context, GRIB_LOG_ERROR, "grib_accessor_bit : unpack_long : Wrong size for %s it contains %d values ", a->name , 1 );
*len = 0;
return GRIB_ARRAY_TOO_SMALL;
}
if((ret = grib_get_long_internal(a->parent->h,ac->owner,&data)) != GRIB_SUCCESS){
*len = 0;
return ret;
}
if(data & (1<<ac->bit_index))
*val = 1;
else
*val = 0;
*len = 1;
return GRIB_SUCCESS;
}
static int pack_long (grib_accessor* a, const long *val, size_t *len)
{
grib_accessor_bit *ac = (grib_accessor_bit*) a;
grib_accessor* owner = NULL;
unsigned char *mdata = 0;
if(*len < 1)
{
grib_context_log(a->parent->h->context, GRIB_LOG_ERROR, "grib_accessor_bit : pack_long : At least one value to pack for %s", a->name );
*len = 0;
return GRIB_ARRAY_TOO_SMALL;
}
owner = grib_find_accessor(a->parent->h,ac->owner);
if(!owner){
grib_context_log(a->parent->h->context, GRIB_LOG_ERROR, "grib_accessor_bit : Cannot get the owner %s for computing the bit value of %s ",ac->owner, a->name);
*len = 0;
return GRIB_NOT_FOUND;
}
mdata = a->parent->h->buffer->data;
mdata += grib_byte_offset(owner);
grib_set_bit( mdata,7-ac->bit_index , *val>0);
*len = 1;
return GRIB_SUCCESS;
}
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