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eccodes/src/grib_accessor_class_variable.c

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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"
#include <limits.h>
/*
This is used by make_class.pl
START_CLASS_DEF
CLASS = accessor
SUPER = grib_accessor_class_gen
IMPLEMENTS = unpack_double;pack_double
IMPLEMENTS = unpack_string;pack_string;string_length
IMPLEMENTS = unpack_long;pack_long;destroy;byte_count
IMPLEMENTS = init;dump;value_count;get_native_type
IMPLEMENTS = compare; make_clone
MEMBERS=double dval
MEMBERS=char* cval
MEMBERS=int type
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 pack_double(grib_accessor*, const double* val,size_t *len);
static int pack_long(grib_accessor*, const long* val,size_t *len);
static int pack_string(grib_accessor*, const char*, size_t *len);
static int unpack_double(grib_accessor*, double* val,size_t *len);
static int unpack_long(grib_accessor*, long* val,size_t *len);
static int unpack_string (grib_accessor*, char*, size_t *len);
static size_t string_length(grib_accessor*);
static long byte_count(grib_accessor*);
static int value_count(grib_accessor*,long*);
static void destroy(grib_context*,grib_accessor*);
static void dump(grib_accessor*, grib_dumper*);
static void init(grib_accessor*,const long, grib_arguments* );
static void init_class(grib_accessor_class*);
static int compare(grib_accessor*, grib_accessor*);
static grib_accessor* make_clone(grib_accessor*,grib_section*,int*);
typedef struct grib_accessor_variable {
grib_accessor att;
/* Members defined in gen */
/* Members defined in variable */
double dval;
char* cval;
int type;
} grib_accessor_variable;
extern grib_accessor_class* grib_accessor_class_gen;
static grib_accessor_class _grib_accessor_class_variable = {
&grib_accessor_class_gen, /* super */
"variable", /* name */
sizeof(grib_accessor_variable), /* size */
0, /* inited */
&init_class, /* init_class */
&init, /* init */
0, /* post_init */
&destroy, /* free mem */
&dump, /* 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 */
&get_native_type, /* 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 */
&pack_double, /* grib_pack procedures double */
&unpack_double, /* grib_unpack procedures double */
&pack_string, /* 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 */
&compare, /* compare vs. another accessor */
0, /* unpack only ith value */
0, /* unpack a subarray */
0, /* clear */
&make_clone, /* clone accessor */
};
grib_accessor_class* grib_accessor_class_variable = &_grib_accessor_class_variable;
static void init_class(grib_accessor_class* c)
{
c->next_offset = (*(c->super))->next_offset;
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_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->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 */
#define MAX_VARIABLE_STRING_LENGTH 255
static void init(grib_accessor* a, const long length , grib_arguments* args )
{
grib_accessor_variable* self = (grib_accessor_variable*)a;
grib_expression *expression = grib_arguments_get_expression(grib_handle_of_accessor(a),args,0);
const char* p = 0;
size_t len = 1;
long l;
int ret=0;
double d;
char tmp[1024];
a->length = 0;
if (self->type==GRIB_TYPE_UNDEFINED && expression) {
self->type = grib_expression_native_type(grib_handle_of_accessor(a),expression);
switch(self->type)
{
case GRIB_TYPE_DOUBLE:
grib_expression_evaluate_double(grib_handle_of_accessor(a),expression,&d);
pack_double(a,&d,&len);
break;
case GRIB_TYPE_LONG:
grib_expression_evaluate_long(grib_handle_of_accessor(a),expression,&l);
pack_long(a,&l,&len);
break;
default:
len = sizeof(tmp);
p = grib_expression_evaluate_string(grib_handle_of_accessor(a),expression,tmp,&len,&ret);
if (ret != GRIB_SUCCESS) {
grib_context_log(a->context,GRIB_LOG_ERROR,"unable to evaluate %s as string",a->name);
Assert(0);
}
len = strlen(p)+1;
pack_string(a,p,&len);
break;
}
}
}
void accessor_variable_set_type(grib_accessor* a,int type) {
grib_accessor_variable *self = (grib_accessor_variable*)a;
self->type=type;
}
static void dump(grib_accessor* a, grib_dumper* dumper)
{
grib_accessor_variable *self = (grib_accessor_variable*)a;
switch(self->type)
{
case GRIB_TYPE_DOUBLE:
grib_dump_double(dumper,a,NULL);
break;
case GRIB_TYPE_LONG:
grib_dump_long(dumper,a,NULL);
break;
default:
grib_dump_string(dumper,a,NULL);
break;
}
}
static int pack_double(grib_accessor* a, const double* val, size_t *len)
{
grib_accessor_variable *self = (grib_accessor_variable*)a;
if(*len != 1)
{
grib_context_log(a->context, GRIB_LOG_ERROR, "Wrong size for %s it contains %d values ", a->name , 1 );
*len = 1;
return GRIB_ARRAY_TOO_SMALL;
}
self->dval = *val;
if ( *val < (double) LONG_MIN || *val > (double) LONG_MAX )
self->type = GRIB_TYPE_DOUBLE;
else
self->type = ((long)*val == *val) ? GRIB_TYPE_LONG : GRIB_TYPE_DOUBLE;
return GRIB_SUCCESS;
}
static int pack_long(grib_accessor* a, const long* val, size_t *len)
{
grib_accessor_variable *self = (grib_accessor_variable*)a;
if(*len != 1)
{
grib_context_log(a->context, GRIB_LOG_ERROR, "Wrong size for %s it contains %d values ", a->name , 1 );
*len = 1;
return GRIB_ARRAY_TOO_SMALL;
}
self->dval = *val;
self->type = GRIB_TYPE_LONG;
return GRIB_SUCCESS;
}
static int unpack_double(grib_accessor* a, double* val, size_t *len)
{
grib_accessor_variable *ac = (grib_accessor_variable*)a;
if(*len < 1)
{
grib_context_log(a->context, GRIB_LOG_ERROR, "Wrong size for %s it contains %d values ", a->name , 1 );
*len = 0;
return GRIB_ARRAY_TOO_SMALL;
}
*val = ac->dval;
*len = 1;
return GRIB_SUCCESS;
}
static int unpack_long(grib_accessor* a, long* val, size_t *len)
{
grib_accessor_variable *ac = (grib_accessor_variable*)a;
if(*len < 1)
{
grib_context_log(a->context, GRIB_LOG_ERROR, "Wrong size for %s it contains %d values ", a->name , 1 );
*len = 0;
return GRIB_ARRAY_TOO_SMALL;
}
*val = (long)ac->dval;
*len = 1;
return GRIB_SUCCESS;
}
static int get_native_type(grib_accessor* a)
{
grib_accessor_variable *self = (grib_accessor_variable*)a;
return self->type;
}
static void destroy(grib_context* c,grib_accessor* a)
{
grib_accessor_variable *self = (grib_accessor_variable*)a;
grib_context_free(c,self->cval);
}
static int unpack_string(grib_accessor* a, char* val, size_t *len){
grib_accessor_variable *self = (grib_accessor_variable*)a;
char buf[80];
char *p = buf;
size_t slen ;
if(self->type == GRIB_TYPE_STRING) {
p = self->cval;
} else {
sprintf(p,"%g",self->dval);
}
slen = strlen(p) +1;
if(*len < slen)
{
grib_context_log(a->context, GRIB_LOG_ERROR, "Variable unpack_string Wrong size for %s it is %d bytes big (len=%d)", a->name , slen ,*len);
*len = slen;
return GRIB_BUFFER_TOO_SMALL;
}
strcpy(val,p);
*len = slen;
return GRIB_SUCCESS;
}
static int pack_string(grib_accessor* a, const char* val, size_t *len)
{
grib_accessor_variable *self = (grib_accessor_variable*)a;
grib_context *c = a->context;
grib_context_free(c,self->cval);
self->cval = grib_context_strdup(c,val);
self->dval = atof(val);
self->type = GRIB_TYPE_STRING;
return GRIB_SUCCESS;
}
static int value_count(grib_accessor* a,long* count)
{
*count=1;
return 0;
}
static size_t string_length(grib_accessor* a)
{
grib_accessor_variable *self = (grib_accessor_variable*)a;
if(self->type == GRIB_TYPE_STRING)
return strlen(self->cval);
else
return MAX_VARIABLE_STRING_LENGTH;
}
static long byte_count(grib_accessor* a) {
return a->length;
}
/* NOT ANY MORE
static long byte_count(grib_accessor* a) {
grib_accessor_variable *self = (grib_accessor_variable*)a;
char buf[80]={0,};
if(self->type == GRIB_TYPE_STRING) {
return strlen(self->cval) +1;
} else {
sprintf(buf,"%g",self->dval);
printf("========> \"%s\"\n",buf);
return strlen(buf)+1;
}
}
*/
static int compare(grib_accessor* a, grib_accessor* b) {
int retval=0;
double *aval=0;
double *bval=0;
size_t alen = 0;
size_t blen = 0;
int err=0;
long count=0;
err=grib_value_count(a,&count);
if (err) return err;
alen=count;
err=grib_value_count(b,&count);
if (err) return err;
blen=count;
if (alen != blen) return GRIB_COUNT_MISMATCH;
aval=(double*)grib_context_malloc(a->context,alen*sizeof(double));
bval=(double*)grib_context_malloc(b->context,blen*sizeof(double));
grib_unpack_double(a,aval,&alen);
grib_unpack_double(b,bval,&blen);
retval = GRIB_SUCCESS;
while (alen != 0) {
if (*bval != *aval) retval = GRIB_DOUBLE_VALUE_MISMATCH;
alen--;
}
grib_context_free(a->context,aval);
grib_context_free(b->context,bval);
return retval;
}
static grib_accessor* make_clone(grib_accessor* a,grib_section* s,int* err)
{
grib_accessor* the_clone=NULL;
grib_accessor_variable *self = (grib_accessor_variable*)a;
grib_accessor_variable* variableAccessor=NULL;
grib_action creator = {0, };
creator.op = "variable";
creator.name_space = "";
creator.set = 0;
creator.name=grib_context_strdup(a->context,a->name);
the_clone=grib_accessor_factory(s, &creator, 0, NULL);
the_clone->parent=NULL;
the_clone->h=s->h;
variableAccessor=(grib_accessor_variable*)the_clone;
*err=0;
variableAccessor->type=self->type;
if(self->type == GRIB_TYPE_STRING && self->cval!=NULL) {
variableAccessor->cval=grib_context_strdup(a->context,self->cval);
} else {
variableAccessor->dval=self->dval;
}
return the_clone;
}
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