Function parse

src/gmtsimplify.c:99–141

}

static int parse (struct GMT_CTRL *GMT, struct GMTSIMPLIFY_CTRL *Ctrl, struct GMT_OPTION *options) {
	/* This parses the options provided to gmtsimplify and sets parameters in CTRL.
	 * Any GMT common options will override values set previously by other commands.
	 * It also replaces any file names specified as input or output with the data ID
	 * returned when registering these sources/destinations with the API.
	 */

	unsigned int n_errors = 0;
	struct GMT_OPTION *opt = NULL;
	struct GMTAPI_CTRL *API = GMT->parent;

	for (opt = options; opt; opt = opt->next) {
		switch (opt->option) {

			case '<':	/* Skip input files after checking they exist */
				if (GMT_Get_FilePath (API, GMT_IS_DATASET, GMT_IN, GMT_FILE_REMOTE, &(opt->arg))) n_errors++;
				break;
			case '>':	/* Write to named output file instead of stdout */
				n_errors += gmt_M_repeated_module_option (API, Ctrl->Out.active);
				n_errors += gmt_get_required_file (GMT, opt->arg, opt->option, 0, GMT_IS_DATASET, GMT_OUT, GMT_FILE_LOCAL, &(Ctrl->Out.file));
				break;

			/* Processes program-specific parameters */

			case 'T':	/* Set tolerance distance */
				n_errors += gmt_M_repeated_module_option (API, Ctrl->T.active);
				Ctrl->T.mode = gmt_get_distance (GMT, opt->arg, &(Ctrl->T.tolerance), &(Ctrl->T.unit));
				break;

			default:	/* Report bad options */
				n_errors += gmt_default_option_error (GMT, opt);
				break;
		}
	}

	n_errors += gmt_M_check_condition (GMT, Ctrl->T.mode == -1, "Option -T: Unrecognized unit.\n");
	n_errors += gmt_M_check_condition (GMT, Ctrl->T.mode == -2, "Option -T: Unable to decode tolerance distance.\n");
	n_errors += gmt_M_check_condition (GMT, Ctrl->T.mode == -3, "Option -T: Tolerance is negative.\n");
	if (GMT->common.b.active[GMT_IN] && GMT->common.b.ncol[GMT_IN] == 0) GMT->common.b.ncol[GMT_IN] = 2;
	n_errors += gmt_M_check_condition (GMT, GMT->common.b.active[GMT_IN] && GMT->common.b.ncol[GMT_IN] < 2, "Binary input data (-bi) must have at least 2 columns.\n");

	return (n_errors ? GMT_PARSE_ERROR : GMT_NOERROR);
}

#define GMT_sqr(x) ((x)*(x))