mirror of https://github.com/ecmwf/eccodes.git
158 lines
4.9 KiB
C++
158 lines
4.9 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_ascii
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IMPLEMENTS = pack_string;unpack_string;value_count
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IMPLEMENTS = init;string_length
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MEMBERS= const char* name
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MEMBERS= char* value
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MEMBERS= const char* default_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_string(grib_accessor*, const char*, size_t* len);
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static int unpack_string(grib_accessor*, char*, size_t* len);
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static size_t string_length(grib_accessor*);
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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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typedef struct grib_accessor_getenv
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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 ascii */
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/* Members defined in getenv */
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const char* name;
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char* value;
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const char* default_value;
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} grib_accessor_getenv;
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extern grib_accessor_class* grib_accessor_class_ascii;
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static grib_accessor_class _grib_accessor_class_getenv = {
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&grib_accessor_class_ascii, /* super */
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"getenv", /* name */
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sizeof(grib_accessor_getenv), /* size */
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0, /* inited */
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0, /* init_class */
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&init, /* init */
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0, /* post_init */
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0, /* destroy */
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0, /* dump */
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0, /* next_offset */
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&string_length, /* 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, /* pack_missing */
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0, /* is_missing */
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0, /* pack_long */
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0, /* 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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&pack_string, /* 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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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 (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_getenv = &_grib_accessor_class_getenv;
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/* END_CLASS_IMP */
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static void init(grib_accessor* a, const long l, grib_arguments* args)
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{
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grib_accessor_getenv* self = (grib_accessor_getenv*)a;
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static char undefined[] = "undefined";
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self->name = grib_arguments_get_string(grib_handle_of_accessor(a), args, 0);
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self->default_value = grib_arguments_get_string(grib_handle_of_accessor(a), args, 1);
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if (!self->default_value)
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self->default_value = undefined;
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self->value = 0;
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}
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static int pack_string(grib_accessor* a, const char* 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 int unpack_string(grib_accessor* a, char* val, size_t* len)
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{
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grib_accessor_getenv* self = (grib_accessor_getenv*)a;
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char* v = 0;
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size_t l = 0;
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if (!self->value) {
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v = getenv(self->name);
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if (!v)
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v = (char*)self->default_value;
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self->value = v;
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}
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l = strlen(self->value);
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if (*len < l)
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return GRIB_ARRAY_TOO_SMALL;
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snprintf(val, 1024, "%s", self->value);
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*len = strlen(self->value);
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return GRIB_SUCCESS;
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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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static size_t string_length(grib_accessor* a)
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{
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return 1024;
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}
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