mirror of https://github.com/ecmwf/eccodes.git
243 lines
7.4 KiB
C++
243 lines
7.4 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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#include <cctype>
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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_long
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IMPLEMENTS = unpack_long; unpack_string
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IMPLEMENTS = init;post_init;dump
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IMPLEMENTS = byte_offset;byte_count
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IMPLEMENTS = pack_long
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IMPLEMENTS = notify_change
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MEMBERS = long llength
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MEMBERS = long loffset
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MEMBERS = grib_expression* real_name
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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 unpack_string(grib_accessor*, char*, size_t* len);
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static long byte_count(grib_accessor*);
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static long byte_offset(grib_accessor*);
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static void dump(grib_accessor*, grib_dumper*);
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static void init(grib_accessor*, const long, grib_arguments*);
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static void post_init(grib_accessor*);
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static int notify_change(grib_accessor*, grib_accessor*);
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typedef struct grib_accessor_lookup
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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 lookup */
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long llength;
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long loffset;
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grib_expression* real_name;
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} grib_accessor_lookup;
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extern grib_accessor_class* grib_accessor_class_long;
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static grib_accessor_class _grib_accessor_class_lookup = {
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&grib_accessor_class_long, /* super */
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"lookup", /* name */
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sizeof(grib_accessor_lookup), /* size */
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0, /* inited */
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0, /* init_class */
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&init, /* init */
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&post_init, /* post_init */
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0, /* destroy */
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&dump, /* dump */
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0, /* next_offset */
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0, /* get length of string */
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0, /* get number of values */
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&byte_count, /* get number of bytes */
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&byte_offset, /* 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, /* pack_missing */
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0, /* is_missing */
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&pack_long, /* pack_long */
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&unpack_long, /* unpack_long */
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0, /* pack_double */
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0, /* pack_float */
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0, /* unpack_double */
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0, /* unpack_float */
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0, /* pack_string */
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&unpack_string, /* unpack_string */
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0, /* pack_string_array */
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0, /* unpack_string_array */
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0, /* pack_bytes */
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0, /* unpack_bytes */
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0, /* pack_expression */
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¬ify_change, /* 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 (double) */
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0, /* unpack only ith value (float) */
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0, /* unpack a given set of elements (double) */
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0, /* unpack a given set of elements (float) */
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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_lookup = &_grib_accessor_class_lookup;
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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_lookup* self = (grib_accessor_lookup*)a;
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a->length = 0;
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self->llength = len;
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self->loffset = grib_arguments_get_long(grib_handle_of_accessor(a), arg, 0);
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a->flags |= GRIB_ACCESSOR_FLAG_READ_ONLY;
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self->real_name = grib_arguments_get_expression(grib_handle_of_accessor(a), arg, 1);
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}
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static void post_init(grib_accessor* a)
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{
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grib_accessor_lookup* self = (grib_accessor_lookup*)a;
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if (self->real_name) {
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grib_dependency_observe_expression(a, self->real_name);
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}
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}
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static void dump(grib_accessor* a, grib_dumper* dumper)
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{
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grib_accessor_lookup* self = (grib_accessor_lookup*)a;
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unsigned char bytes[1024] = {0,};
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char msg[1024] = {0,};
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char buf[2048];
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int i;
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unsigned long v = 0;
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size_t llen = self->llength;
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grib_unpack_bytes(a, bytes, &llen); /* TODO: Unpack byte unpack the wrong offset */
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bytes[llen] = 0;
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for (i = 0; i < llen; i++) {
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msg[i] = isprint(bytes[i]) ? bytes[i] : '?';
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v <<= 8;
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v |= bytes[i];
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}
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msg[llen] = 0;
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snprintf(buf, sizeof(buf), "%s %lu %ld-%ld", msg, v, (long)a->offset + self->loffset, (long)self->llength);
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grib_dump_long(dumper, a, buf);
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}
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static int unpack_string(grib_accessor* a, char* v, size_t* len)
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{
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grib_accessor_lookup* self = (grib_accessor_lookup*)a;
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unsigned char bytes[1024] = {0,};
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int i;
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size_t llen = self->llength;
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grib_unpack_bytes(a, bytes, &llen); /* TODO: Unpack byte unpack the wrong offset */
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bytes[llen] = 0;
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for (i = 0; i < llen; i++) {
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v[i] = isprint(bytes[i]) ? bytes[i] : '?';
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}
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v[llen] = 0;
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if (llen == 1 && v[0] == '?') {
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/* Try unpack as long */
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size_t length = 10;
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long lval = 0;
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int err = unpack_long(a, &lval, &length);
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if (!err) {
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char str[5];
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int conv = snprintf(str, sizeof(str), "%ld", lval);
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if (conv == 1) {
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v[0] = str[0];
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}
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}
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}
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return GRIB_SUCCESS;
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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_lookup* self = (grib_accessor_lookup*)a;
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grib_handle* h = grib_handle_of_accessor(a);
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long pos = (a->offset + self->loffset) * 8;
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if (len[0] < 1) {
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grib_context_log(a->context, GRIB_LOG_ERROR, "Wrong size for %s it contains %d values ", a->name, 1);
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len[0] = 0;
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return GRIB_ARRAY_TOO_SMALL;
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}
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/* This is used when reparsing or rebuilding */
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if (h->loader) {
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Assert(*len == 1);
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return h->loader->lookup_long(h->context, h->loader, a->name, val);
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}
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val[0] = grib_decode_unsigned_long(h->buffer->data, &pos, self->llength * 8);
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len[0] = 1;
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/*printf("###########lookup unpack_long: %s %ld %ld\n",a->name, pos/8, val[0]);*/
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return GRIB_SUCCESS;
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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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return GRIB_NOT_IMPLEMENTED;
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}
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static long byte_count(grib_accessor* a)
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{
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grib_accessor_lookup* self = (grib_accessor_lookup*)a;
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return self->llength;
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}
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static long byte_offset(grib_accessor* a)
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{
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grib_accessor_lookup* self = (grib_accessor_lookup*)a;
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return self->loffset;
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}
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static int notify_change(grib_accessor* self, grib_accessor* changed)
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{
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/* Forward changes */
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return grib_dependency_notify_change(self);
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}
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