eccodes/tools/wingetopt.c

/*
 * Copyright 2005-2014 ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 *
 * In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
 * virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
 */

#include "wingetopt.h"

#ifdef GRIB_ON_WINDOWS

#include "string.h"

char *optarg;		/* global argument pointer */
int optind = 0; 	/* global argv index */
int opterr = 0;
int getopt(int argc, char *argv[], const char *optstring)
{
	static char *next = 0;
	char c;
	char *cp;
	if (optind == 0)
		next = 0;

	optarg = 0;

	if (next == 0 || *next == '\0')
	{
		if (optind == 0)
			optind++;

		if (optind >= argc || argv[optind][0] != '-' || argv[optind][1] == '\0')
		{
			optarg = 0;
			if (optind < argc)
				optarg = argv[optind];
			return -1;
		}

		if (strcmp(argv[optind], "--") == 0)
		{
			optind++;
			optarg = NULL;
			if (optind < argc)
				optarg = argv[optind];
			return  -1;
		}

		next = argv[optind];
		next++;		/* skip past - */
		optind++;
	}

	c = *next++;
	cp = strrchr(optstring, c);

	if (cp == 0 || c == ':')
		return '?';

	cp++;
	if (*cp == ':')
	{
		if (*next != '\0')
		{
			optarg = next;
			next = 0;
		}
		else if (optind < argc)
		{
			optarg = argv[optind];
			optind++;
		}
		else
		{
			return '?';
		}
	}

	return c;
}
#endif