Function parse

src/gmtmath.c:790–937

}

static int parse (struct GMT_CTRL *GMT, struct GMTMATH_CTRL *Ctrl, struct GMT_OPTION *options) {
	/* This parses the options provided to gmtmath 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, k = 0;
	bool missing_equal = true;
	char *c = NULL, *t_arg = NULL;
	struct GMT_OPTION *opt = NULL;
	struct GMTAPI_CTRL *API = GMT->parent;
	int gmt_parse_o_option (struct GMT_CTRL *GMT, char *arg);

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

			case '<':	/* Input files */
				if (opt->arg[0] == '=' && opt->arg[1] == 0) {	/* No it was an = [outfile] sequence */
					missing_equal = false;
					opt->option = GMT_OPT_OUTFILE;	/* Prevents further use later */
					if (opt->next && (opt->next->option == GMT_OPT_INFILE || opt->next->option == GMT_OPT_OUTFILE)) {
						opt = opt->next;	/* Skip ahead */
						n_errors += gmt_M_repeated_module_option (API, Ctrl->Out.active);
						if (opt->arg[0]) Ctrl->Out.file = strdup (opt->arg);	/* Optional output file since stdout is default */
						opt->option = GMT_OPT_OUTFILE;	/* Prevents further use later */
					}
				}
				break;
			case '>':	/* Output file specified via an API; set required output file here */
				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));
				missing_equal = false;
				break;
			case '#':	/* Skip numbers */
				break;

			/* Processes program-specific parameters */

			case 'A':	/* y(x) table for LSQFIT/SVDFIT operations */
				n_errors += gmt_M_repeated_module_option (API, Ctrl->A.active);
				if (opt->arg[0] == '-') {	/* Old-style leading hyphen to the filename has been replaced by modifier +r */
					if (gmt_M_compat_check (GMT, 5)) {
						GMT_Report (API, GMT_MSG_COMPAT, "The leading hyphen in -A is deprecated.  Append modifier +r instead.\n");
						Ctrl->A.null = true;
						k = 1;
					}
					else {
						GMT_Report (API, GMT_MSG_ERROR, "Option -A: Unable to decode arguments\n");
						n_errors++;
					}
				}
				if ((c = strchr(opt->arg, '+')) != NULL && strchr("ersw", c[1]) != NULL) {	/* Got a valid modifier */
					unsigned int pos = 0;
					char p[GMT_LEN256] = {""};
					c[0] = '\0';	/* Temporarily chop off modifiers */
					Ctrl->A.file = strdup (&opt->arg[k]);
					c[0] = '+';	/* Restore the modifier */