mirror of https://github.com/ecmwf/eccodes.git
106 lines
3.1 KiB
C
106 lines
3.1 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 "eccodes.h"
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#include <ctype.h>
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static void usage(const char* prog)
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{
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printf("usage: %s in1.grib in2.grib what out.grib\n", prog);
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printf("in1.grib The grib in whose sections we are interested, i.e. the source of the sections (read-only)\n");
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printf("in2.grib The input grib (read-only)\n");
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printf("what The section(s) to copy: p(Product), g(Grid), l(Local), d(Data), b(Bitmap)\n");
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printf("out.grib The output file\n");
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exit(1);
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}
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int main(int argc, char* argv[])
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{
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codes_handle *hfrom, *hto, *h;
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FILE* in;
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char *in_name1, *in_name2, *what_str, *out_name;
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int i, err = 0, what = 0;
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if (argc < 5) usage(argv[0]);
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in_name1 = argv[1];
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in_name2 = argv[2];
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what_str = argv[3];
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out_name = argv[4];
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in = fopen(in_name1, "rb");
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if (!in) {
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perror(in_name1);
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exit(1);
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}
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hfrom = codes_handle_new_from_file(0, in, PRODUCT_GRIB, &err);
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CODES_CHECK(err, 0);
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fclose(in);
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in = fopen(in_name2, "rb");
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if (!in) {
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perror(in_name2);
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exit(1);
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}
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hto = codes_handle_new_from_file(0, in, PRODUCT_GRIB, &err);
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CODES_CHECK(err, 0);
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fclose(in);
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/* the sections for the "what" argument are:
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* CODES_SECTION_PRODUCT
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* CODES_SECTION_GRID
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* CODES_SECTION_LOCAL
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* CODES_SECTION_DATA
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* CODES_SECTION_BITMAP
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* one can bitwise-OR them to have more than one section copied
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* e.g. what = CODES_SECTION_PRODUCT | CODES_SECTION_LOCAL;
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*/
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for (i = 0; i < strlen(what_str); ++i) {
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if (what_str[i] == 'p') {
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printf("Copying the PRODUCT section\n");
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what |= CODES_SECTION_PRODUCT;
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}
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else if (what_str[i] == 'g') {
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printf("Copying the GRID section\n");
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what |= CODES_SECTION_GRID;
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}
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else if (what_str[i] == 'l') {
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printf("Copying the LOCAL section\n");
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what |= CODES_SECTION_LOCAL;
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}
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else if (what_str[i] == 'd') {
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printf("Copying the DATA section\n");
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what |= CODES_SECTION_DATA;
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}
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else if (what_str[i] == 'b') {
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printf("Copying the BITMAP section\n");
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what |= CODES_SECTION_BITMAP;
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}
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else if (isspace(what_str[i]) || what_str[i] == ',') {
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/* ignore spaces and comma separator */
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}
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else {
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fprintf(stderr, "Invalid option: '%c'. Ignoring.\n", what_str[i]);
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}
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}
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h = codes_grib_util_sections_copy(hfrom, hto, what, &err);
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CODES_CHECK(err, 0);
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err = codes_write_message(h, out_name, "w");
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codes_handle_delete(hfrom);
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codes_handle_delete(hto);
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codes_handle_delete(h);
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return err;
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}
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