mirror of https://github.com/ecmwf/eccodes.git
75 lines
2.4 KiB
C++
75 lines
2.4 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 <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "grib_api.h"
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int main(int argc, char** argv)
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{
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int err = 0;
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long step;
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const char** filenames = NULL;
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size_t nkeys, nfiles, i=0;
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const char* keys[] = { "step:i", "date", "paramId", "levelType" };
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grib_fieldset* set = NULL;
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grib_handle* h = NULL;
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char param[20] = {0,};
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char typeOfLevel[50] = {0,};
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char date[10] = {0,};
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size_t lenDate = 10, lenParam = 20, lenLevel = 50;
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char* order_by = NULL;
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if (argc != 3) return 1; //Usage: prog order_by grib_file grib_file ...
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nkeys = sizeof(keys) / sizeof(*keys);
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order_by = argv[1];
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nfiles = argc - 2;
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filenames = (const char**)malloc(sizeof(char*) * nfiles);
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for (i = 0; i < nfiles; i++)
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filenames[i] = (char*)strdup(argv[i + 2]);
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set = grib_fieldset_new_from_files(0, filenames, nfiles, keys, nkeys, 0, 0, &err);
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GRIB_CHECK(err, 0);
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/* not yet implemented */
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/* err=grib_fieldset_apply_where(set,"(centre=='ecmf') && number==1 || step==6 "); */
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/* GRIB_CHECK(err,0); */
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grib_fieldset_apply_order_by(set, order_by);
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GRIB_CHECK(err, 0);
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printf("Ordering by %s\n", order_by);
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printf("\n%d fields in the fieldset\n", grib_fieldset_count(set));
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printf("step,date,levelType,levelType\n");
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while ((h = grib_fieldset_next_handle(set, &err)) != NULL) {
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lenParam = sizeof(param);
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lenDate = sizeof(date);
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lenLevel = sizeof(typeOfLevel);
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GRIB_CHECK(grib_get_long(h, "step", &step), 0);
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GRIB_CHECK(grib_get_string(h, "date", date, &lenDate), 0);
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GRIB_CHECK(grib_get_string(h, "paramId", param, &lenParam), 0);
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GRIB_CHECK(grib_get_string(h, "levelType", typeOfLevel, &lenLevel), 0);
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printf("%ld %s %s %s\n", step, date, typeOfLevel, param);
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grib_handle_delete(h);
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}
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grib_fieldset_delete(set);
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grib_handle_delete(h);
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for (i = 0; i < nfiles; i++)
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free((char*)filenames[i]);
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free(filenames);
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return 0;
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}
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