mirror of https://github.com/ecmwf/eccodes.git
233 lines
8.8 KiB
C
233 lines
8.8 KiB
C
/*
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* (C) Copyright 2005- 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_unsigned
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IMPLEMENTS = unpack_long;pack_long; value_count
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IMPLEMENTS = init
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MEMBERS= const char* value
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MEMBERS= const char* factor
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MEMBERS= const char* divisor
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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_long(grib_accessor*, const long* val, size_t* len);
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static int unpack_long(grib_accessor*, long* 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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typedef struct grib_accessor_times
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{
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grib_accessor att;
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/* Members defined in gen */
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/* Members defined in long */
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/* Members defined in unsigned */
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long nbytes;
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grib_arguments* arg;
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/* Members defined in times */
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const char* value;
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const char* factor;
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const char* divisor;
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} grib_accessor_times;
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extern grib_accessor_class* grib_accessor_class_unsigned;
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static grib_accessor_class _grib_accessor_class_times = {
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&grib_accessor_class_unsigned, /* super */
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"times", /* name */
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sizeof(grib_accessor_times), /* 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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&pack_long, /* grib_pack procedures long */
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&unpack_long, /* grib_unpack procedures long */
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0, /* grib_pack procedures double */
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0, /* 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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0, /* update_size */
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0, /* preferred_size */
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0, /* resize */
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0, /* 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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0, /* clone accessor */
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};
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grib_accessor_class* grib_accessor_class_times = &_grib_accessor_class_times;
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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_double = (*(c->super))->pack_double;
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c->unpack_double = (*(c->super))->unpack_double;
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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->update_size = (*(c->super))->update_size;
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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->nearest_smaller_value = (*(c->super))->nearest_smaller_value;
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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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c->make_clone = (*(c->super))->make_clone;
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}
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/* END_CLASS_IMP */
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static void init(grib_accessor* a, const long l, grib_arguments* c)
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{
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grib_accessor_times* self = (grib_accessor_times*)a;
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int n = 0;
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self->value = grib_arguments_get_name(grib_handle_of_accessor(a), c, n++);
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self->factor = grib_arguments_get_name(grib_handle_of_accessor(a), c, n++);
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self->divisor = grib_arguments_get_name(grib_handle_of_accessor(a), c, n++);
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a->length = 0;
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}
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static int unpack_long(grib_accessor* a, long* val, size_t* len)
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{
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grib_accessor_times* self = (grib_accessor_times*)a;
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int ret = 0;
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long factor = 0;
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long divisor = 1;
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int* err = &ret;
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long value = 0;
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if (*len < 1)
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return GRIB_ARRAY_TOO_SMALL;
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if (grib_is_missing(grib_handle_of_accessor(a), self->value, err) != 0) {
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*val = GRIB_MISSING_LONG;
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return GRIB_SUCCESS;
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}
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if (ret)
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return ret;
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ret = grib_get_long_internal(grib_handle_of_accessor(a), self->factor, &factor);
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if (ret)
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return ret;
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if (self->divisor)
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ret = grib_get_long_internal(grib_handle_of_accessor(a), self->divisor, &divisor);
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if (ret)
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return ret;
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ret = grib_get_long_internal(grib_handle_of_accessor(a), self->value, &value);
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if (ret)
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return ret;
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/* printf("factor=%ld divisor=%ld value=%ld\n",factor,divisor,value); */
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*val = ((double)value * (double)factor) / (double)divisor;
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*len = 1;
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return ret;
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}
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static int pack_long(grib_accessor* a, const long* val, size_t* len)
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{
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grib_accessor_times* self = (grib_accessor_times*)a;
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int ret = 0;
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long value = 0;
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long factor, v, divisor = 1;
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if (*val == GRIB_MISSING_LONG)
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return grib_set_missing(grib_handle_of_accessor(a), self->value);
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ret = grib_get_long_internal(grib_handle_of_accessor(a), self->factor, &factor);
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if (ret)
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return ret;
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if (self->divisor)
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ret = grib_get_long_internal(grib_handle_of_accessor(a), self->divisor, &divisor);
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if (ret)
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return ret;
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/*Assert((*val%self->factor)==0);*/
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v = *val * divisor;
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if ((v % factor) == 0) {
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value = v / factor;
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}
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else {
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value = v > 0 ? ((double)v) / factor + 0.5 : ((double)v) / factor - 0.5;
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/* grib_context_log(a->context,GRIB_LOG_WARNING,"%s/%ld = %ld/%ld = %ld. Rounding to convert key.",a->name,self->factor,*val,self->factor,value); */
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}
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ret = grib_set_long_internal(grib_handle_of_accessor(a), self->value, value);
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if (ret)
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return ret;
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*len = 1;
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return ret;
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}
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static int value_count(grib_accessor* a, long* count)
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{
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*count = 1;
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return 0;
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}
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