gsender

/*
 * Copyright (C) 2021 Sienci Labs Inc.
 *
 * This file is part of gSender.
 *
 * gSender is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, under version 3 of the License.
 *
 * gSender is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with gSender.  If not, see <https://www.gnu.org/licenses/>.
 *
 * Contact for information regarding this program and its license
 * can be sent through gSender@sienci.com or mailed to the main office
 * of Sienci Labs Inc. in Waterloo, Ontario, Canada.
 *
 */

import ensureArray from "ensure-array";
import _compact from "lodash/compact";
import _find from "lodash/find";
import _get from "lodash/get";
import _includes from "lodash/includes";
import _set from "lodash/set";
import _trim from "lodash/trim";
import { GRBL_MODAL_GROUPS } from "./constants";

class GrblLineParserResultParserState {
	// * Grbl v0.9
	//   [G38.2 G54 G17 G21 G91 G94 M0 M5 M9 T0 F20. S0.]
	// * Grbl v1.1
	//   [GC:G0 G54 G17 G21 G90 G94 M0 M5 M9 T0 S0.0 F500.0]
	static parse(line) {
		const r = line.match(/^\[(?:GC:)?((?:[a-zA-Z][0-9]+(?:\.[0-9]*)?\s*)+)\]$/);
		if (!r) {
			return null;
		}

		const payload = {};
		const words = _compact(r[1].split(" ")).map((word) => {
			return _trim(word);
		});

		for (let i = 0; i < words.length; ++i) {
			const word = words[i];

			// Handle malformed words for G parser (Genmitsu...)
			if (word.length === 0) {
				continue;
			}

			// Gx, Mx
			if (word.indexOf("G") === 0 || word.indexOf("M") === 0) {
				const r = _find(GRBL_MODAL_GROUPS, (group) => {
					return _includes(group.modes, word);
				});

				if (!r) {
					continue;
				}

				const prevWord = _get(payload, "modal." + r.group, "");
				if (prevWord) {
					_set(payload, "modal." + r.group, ensureArray(prevWord).concat(word));
				} else {
					_set(payload, "modal." + r.group, word);
				}

				continue;
			}

			// T: tool number
			if (word.indexOf("T") === 0) {
				_set(payload, "tool", word.substring(1));
				continue;
			}

			// F: feed rate
			if (word.indexOf("F") === 0) {
				_set(payload, "feedrate", word.substring(1));
				continue;
			}

			// S: spindle speed
			if (word.indexOf("S") === 0) {
				_set(payload, "spindle", word.substring(1));
			}
		}

		return {
			type: GrblLineParserResultParserState,
			payload: payload,
		};
	}
}

export default GrblLineParserResultParserState;