Function parse

src/grdview.c:503–807

}

static int parse (struct GMT_CTRL *GMT, struct GRDVIEW_CTRL *Ctrl, struct GMT_OPTION *options) {
	/* This parses the options provided to grdview and sets parameters in Ctrl.
	 * Note Ctrl has already been initialized and non-zero default values set.
	 * 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, q_set = 0, n_commas, j, k, n, id;
	int sval;
	bool no_cpt = false;
	char *c = NULL, *f = NULL;
	struct GMT_OPTION *opt = NULL;
	struct GMTAPI_CTRL *API = GMT->parent;

	for (opt = options; opt; opt = opt->next) {	/* Process all the options given */

		switch (opt->option) {
			/* Common parameters */
			case '<':	/* Input file (only one is accepted) */
				n_errors += gmt_M_repeated_module_option (API, Ctrl->In.active);
				n_errors += gmt_get_required_file (GMT, opt->arg, opt->option, 0, GMT_IS_GRID, GMT_IN, GMT_FILE_REMOTE, &(Ctrl->In.file));
				break;

			/* Processes program-specific parameters */

			case 'C':	/* Cpt file */
				n_errors += gmt_M_repeated_module_option (API, Ctrl->C.active);
				gmt_M_str_free (Ctrl->C.file);
				if (opt->arg[0]) Ctrl->C.file = strdup (opt->arg);
				if (opt->arg[0] && (f = gmt_strrstr (Ctrl->C.file, "+s")) != NULL) {	/* Filename has a +s<outname>, extract that part */
					Ctrl->C.savecpt = &f[2];
					f[0] = '\0';		/* Remove the +s<outname> from Ctrl->C.file */
				}
				gmt_cpt_interval_modifier (GMT, &(Ctrl->C.file), &(Ctrl->C.dz));
				break;
			case 'G':	/* One grid or image or three separate r,g,b grids */
				Ctrl->G.active = true;
				for (k = 0, n_commas = 0; opt->arg[k]; k++) if (opt->arg[k] == ',') n_commas++;
				if (n_commas == 2) {	/* Old-style -Ga,b,c option */
					/* Three r,g,b grids for draping */
					char A[GMT_LEN256] = {""}, B[GMT_LEN256] = {""}, C[GMT_LEN256] = {""};
					sscanf (opt->arg, "%[^,],%[^,],%s", A, B, C);
					n_errors += gmt_get_required_file (GMT, A, opt->option, 0, GMT_IS_GRID, GMT_IN, GMT_FILE_REMOTE, &(Ctrl->G.file[0]));
					n_errors += gmt_get_required_file (GMT, B, opt->option, 0, GMT_IS_GRID, GMT_IN, GMT_FILE_REMOTE, &(Ctrl->G.file[1]));
					n_errors += gmt_get_required_file (GMT, C, opt->option, 0, GMT_IS_GRID, GMT_IN, GMT_FILE_REMOTE, &(Ctrl->G.file[2]));
					Ctrl->G.n = 3;
				}
				else if (n_commas == 0 && Ctrl->G.n < 3) {	/* Just got another drape grid or image */
					Ctrl->G.file[Ctrl->G.n] = strdup (opt->arg);
					if (GMT_Get_FilePath (API, GMT_IS_GRID, GMT_IN, GMT_FILE_REMOTE, &(Ctrl->G.file[Ctrl->G.n]))) n_errors++;
					Ctrl->G.n++;
				}
				else {
					GMT_Report (API, GMT_MSG_ERROR, "Option -G: Usage is -G<drapegrid|drapeimage>\n");
					n_errors++;
				}
				break;