mirror of https://github.com/ecmwf/eccodes.git
230 lines
8.0 KiB
C
230 lines
8.0 KiB
C
/*
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* Copyright 2005-2015 ECMWF.
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*
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* This software is licensed under the terms of the Apache Licence Version 2.0
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* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
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*
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* In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
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* virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
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*/
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#include "grib_api_internal.h"
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/*
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This is used by make_class.pl
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START_CLASS_DEF
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CLASS = accessor
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SUPER = grib_accessor_class_double
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IMPLEMENTS = unpack_double;pack_double
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IMPLEMENTS = init
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IMPLEMENTS = value_count
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MEMBERS = grib_arguments* arg
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IMPLEMENTS = update_size
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IMPLEMENTS = nearest_smaller_value
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END_CLASS_DEF
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*/
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/* START_CLASS_IMP */
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/*
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Don't edit anything between START_CLASS_IMP and END_CLASS_IMP
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Instead edit values between START_CLASS_DEF and END_CLASS_DEF
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or edit "accessor.class" and rerun ./make_class.pl
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*/
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static int pack_double(grib_accessor*, const double* val,size_t *len);
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static int unpack_double(grib_accessor*, double* val,size_t *len);
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static int value_count(grib_accessor*,long*);
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static void init(grib_accessor*,const long, grib_arguments* );
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static void init_class(grib_accessor_class*);
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static void update_size(grib_accessor*,size_t);
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static int nearest_smaller_value (grib_accessor*, double,double*);
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typedef struct grib_accessor_ieeefloat {
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grib_accessor att;
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/* Members defined in gen */
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/* Members defined in double */
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/* Members defined in ieeefloat */
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grib_arguments* arg;
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} grib_accessor_ieeefloat;
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extern grib_accessor_class* grib_accessor_class_double;
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static grib_accessor_class _grib_accessor_class_ieeefloat = {
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&grib_accessor_class_double, /* super */
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"ieeefloat", /* name */
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sizeof(grib_accessor_ieeefloat), /* size */
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0, /* inited */
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&init_class, /* init_class */
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&init, /* init */
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0, /* post_init */
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0, /* free mem */
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0, /* describes himself */
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0, /* get length of section */
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0, /* get length of string */
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&value_count, /* get number of values */
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0, /* get number of bytes */
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0, /* get offset to bytes */
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0, /* get native type */
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0, /* get sub_section */
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0, /* grib_pack procedures long */
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0, /* grib_pack procedures long */
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0, /* grib_pack procedures long */
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0, /* grib_unpack procedures long */
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&pack_double, /* grib_pack procedures double */
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&unpack_double, /* grib_unpack procedures double */
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0, /* grib_pack procedures string */
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0, /* grib_unpack procedures string */
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0, /* grib_pack array procedures string */
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0, /* grib_unpack array procedures string */
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0, /* grib_pack procedures bytes */
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0, /* grib_unpack procedures bytes */
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0, /* pack_expression */
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0, /* notify_change */
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&update_size, /* update_size */
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0, /* preferred_size */
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0, /* resize */
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&nearest_smaller_value, /* nearest_smaller_value */
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0, /* next accessor */
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0, /* compare vs. another accessor */
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0, /* unpack only ith value */
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0, /* unpack a subarray */
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0, /* clear */
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};
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grib_accessor_class* grib_accessor_class_ieeefloat = &_grib_accessor_class_ieeefloat;
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static void init_class(grib_accessor_class* c)
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{
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c->dump = (*(c->super))->dump;
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c->next_offset = (*(c->super))->next_offset;
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c->string_length = (*(c->super))->string_length;
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c->byte_count = (*(c->super))->byte_count;
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c->byte_offset = (*(c->super))->byte_offset;
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c->get_native_type = (*(c->super))->get_native_type;
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c->sub_section = (*(c->super))->sub_section;
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c->pack_missing = (*(c->super))->pack_missing;
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c->is_missing = (*(c->super))->is_missing;
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c->pack_long = (*(c->super))->pack_long;
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c->unpack_long = (*(c->super))->unpack_long;
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c->pack_string = (*(c->super))->pack_string;
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c->unpack_string = (*(c->super))->unpack_string;
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c->pack_string_array = (*(c->super))->pack_string_array;
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c->unpack_string_array = (*(c->super))->unpack_string_array;
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c->pack_bytes = (*(c->super))->pack_bytes;
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c->unpack_bytes = (*(c->super))->unpack_bytes;
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c->pack_expression = (*(c->super))->pack_expression;
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c->notify_change = (*(c->super))->notify_change;
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c->preferred_size = (*(c->super))->preferred_size;
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c->resize = (*(c->super))->resize;
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c->next = (*(c->super))->next;
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c->compare = (*(c->super))->compare;
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c->unpack_double_element = (*(c->super))->unpack_double_element;
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c->unpack_double_subarray = (*(c->super))->unpack_double_subarray;
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c->clear = (*(c->super))->clear;
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}
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/* END_CLASS_IMP */
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static void init(grib_accessor* a, const long len, grib_arguments* arg)
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{
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grib_accessor_ieeefloat* self = (grib_accessor_ieeefloat*)a;
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long count=0;
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self->arg = arg;
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grib_value_count(a,&count);
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a->length = 4*count;
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Assert(a->length>=0);
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}
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static int value_count(grib_accessor* a,long* len)
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{
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grib_accessor_ieeefloat* self = (grib_accessor_ieeefloat*)a;
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*len = 0;
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if(!self->arg) {*len=1;return 0;}
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return grib_get_long_internal(a->parent->h,grib_arguments_get_name(a->parent->h,self->arg,0),len);
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}
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static int pack_double (grib_accessor* a, const double* val, size_t *len)
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{
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grib_accessor_ieeefloat* self = (grib_accessor_ieeefloat*)a;
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int ret = 0;
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unsigned long i = 0;
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unsigned long rlen = *len;
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size_t buflen = 0;
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unsigned char *buf = NULL;
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long off = 0;
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if(*len < 1)
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{
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grib_context_log(a->parent->h->context, GRIB_LOG_ERROR, " wrong size for %s it pack at least 1 values ", a->name , rlen );
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*len = 0;
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return GRIB_ARRAY_TOO_SMALL;
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}
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if (rlen == 1){
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off = a->offset*8;
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ret = grib_encode_unsigned_long(a->parent->h->buffer->data,grib_ieee_to_long(val[0]), &off, 32);
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if (*len > 1) grib_context_log(a->parent->h->context, GRIB_LOG_WARNING, "grib_accessor_unsigned : Trying to pack %d values in a scalar %s, packing first value", *len, a->name );
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if (ret == GRIB_SUCCESS) len[0] = 1;
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return ret;
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}
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buflen = rlen*4;
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buf = (unsigned char*)grib_context_malloc(a->parent->h->context,buflen);
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for(i=0; i < rlen;i++){
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grib_encode_unsigned_longb(buf,grib_ieee_to_long(val[i]), &off, 32);
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}
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ret = grib_set_long_internal(a->parent->h,grib_arguments_get_name(a->parent->h,self->arg,0),rlen);
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if(ret == GRIB_SUCCESS)
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grib_buffer_replace(a, buf, buflen,1,1);
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else
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*len = 0;
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grib_context_free(a->parent->h->context,buf);
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return ret;
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}
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static int unpack_double (grib_accessor* a, double* val, size_t *len)
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{
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long rlen = 0;
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int err=0;
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unsigned long i = 0;
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long bitp = a->offset*8;
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err=grib_value_count(a,&rlen);
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if (err) return err;
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if(*len < rlen)
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{
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grib_context_log(a->parent->h->context, GRIB_LOG_ERROR, " wrong size (%ld) for %s it contains %d values ", *len,a->name , rlen);
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*len = 0;
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return GRIB_ARRAY_TOO_SMALL;
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}
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for(i=0; i< rlen; i++)
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val[i] = grib_long_to_ieee(grib_decode_unsigned_long(a->parent->h->buffer->data,&bitp,32));
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*len = rlen;
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return GRIB_SUCCESS;
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}
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static void update_size(grib_accessor* a,size_t s)
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{
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a->length = s;
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Assert(a->length>=0);
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}
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static int nearest_smaller_value(grib_accessor* a, double val,double* nearest)
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{
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return grib_nearest_smaller_ieee_float(val,nearest);
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}
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