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191 lines
5.7 KiB
JavaScript
191 lines
5.7 KiB
JavaScript
import Utils from "../Utils.js";
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/**
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* Morse Code translation operations.
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*
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* @author tlwr [toby@toby.codes]
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* @copyright Crown Copyright 2017
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* @license Apache-2.0
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*
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* @namespace
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*/
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const MorseCode = {
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/**
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* @constant
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* @default
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*/
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FORMAT_OPTIONS: ["-/.", "_/.", "Dash/Dot", "DASH/DOT", "dash/dot"],
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/**
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* @constant
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* @default
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*/
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LETTER_DELIM_OPTIONS: ["Space", "Line feed", "CRLF", "Forward slash", "Backslash", "Comma", "Semi-colon", "Colon"],
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/**
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* @constant
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* @default
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*/
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WORD_DELIM_OPTIONS: ["Line feed", "CRLF", "Forward slash", "Backslash", "Comma", "Semi-colon", "Colon"],
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/**
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* @constant
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* @default
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*/
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MORSE_TABLE: {
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"A": "<dot><dash>",
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"B": "<dash><dot><dot><dot>",
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"C": "<dash><dot><dash><dot>",
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"D": "<dash><dot><dot>",
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"E": "<dot>",
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"F": "<dot><dot><dash><dot>",
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"G": "<dash><dash><dot>",
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"H": "<dot><dot><dot><dot>",
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"I": "<dot><dot>",
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"J": "<dot><dash><dash><dash>",
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"K": "<dash><dot><dash>",
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"L": "<dot><dash><dot><dot>",
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"M": "<dash><dash>",
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"N": "<dash><dot>",
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"O": "<dash><dash><dash>",
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"P": "<dot><dash><dash><dot>",
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"Q": "<dash><dash><dot><dash>",
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"R": "<dot><dash><dot>",
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"S": "<dot><dot><dot>",
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"T": "<dash>",
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"U": "<dot><dot><dash>",
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"V": "<dot><dot><dot><dash>",
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"W": "<dot><dash><dash>",
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"X": "<dash><dot><dot><dash>",
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"Y": "<dash><dot><dash><dash>",
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"Z": "<dash><dash><dot><dot>",
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"1": "<dot><dash><dash><dash><dash>",
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"2": "<dot><dot><dash><dash><dash>",
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"3": "<dot><dot><dot><dash><dash>",
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"4": "<dot><dot><dot><dot><dash>",
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"5": "<dot><dot><dot><dot><dot>",
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"6": "<dash><dot><dot><dot><dot>",
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"7": "<dash><dash><dot><dot><dot>",
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"8": "<dash><dash><dash><dot><dot>",
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"9": "<dash><dash><dash><dash><dot>",
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"0": "<dash><dash><dash><dash><dash>",
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".": "<dot><dash><dot><dash><dot><dash>",
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",": "<dash><dash><dot><dot><dash><dash>",
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":": "<dash><dash><dash><dot><dot><dot>",
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";": "<dash><dot><dash><dot><dash><dot>",
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"!": "<dash><dot><dash><dot><dash><dash>",
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"?": "<dot><dot><dash><dash><dot><dot>",
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"'": "<dot><dash><dash><dash><dash><dot>",
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"\"": "<dot><dash><dot><dot><dash><dot>",
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"/": "<dash><dot><dot><dash><dot>",
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"-": "<dash><dot><dot><dot><dot><dash>",
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"+": "<dot><dash><dot><dash><dot>",
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"(": "<dash><dot><dash><dash><dot>",
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")": "<dash><dot><dash><dash><dot><dash>",
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"@": "<dot><dash><dash><dot><dash><dot>",
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"=": "<dash><dot><dot><dot><dash>",
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"&": "<dot><dash><dot><dot><dot>",
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"_": "<dot><dot><dash><dash><dot><dash>",
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"$": "<dot><dot><dot><dash><dot><dot><dash>"
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},
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/**
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* To Morse Code operation.
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*
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* @param {number} input
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* @param {Object[]} args
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* @returns {string}
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*/
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runTo: function(input, args) {
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const format = args[0].split("/");
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const dash = format[0];
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const dot = format[1];
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const letterDelim = Utils.charRep[args[1]];
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const wordDelim = Utils.charRep[args[2]];
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input = input.split(/\r?\n/);
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input = Array.prototype.map.call(input, function(line) {
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let words = line.split(/ +/);
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words = Array.prototype.map.call(words, function(word) {
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const letters = Array.prototype.map.call(word, function(character) {
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const letter = character.toUpperCase();
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if (typeof MorseCode.MORSE_TABLE[letter] == "undefined") {
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return "";
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}
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return MorseCode.MORSE_TABLE[letter];
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});
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return letters.join("<ld>");
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});
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line = words.join("<wd>");
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return line;
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});
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input = input.join("\n");
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input = input.replace(
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/<dash>|<dot>|<ld>|<wd>/g,
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function(match) {
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switch (match) {
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case "<dash>": return dash;
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case "<dot>": return dot;
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case "<ld>": return letterDelim;
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case "<wd>": return wordDelim;
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}
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}
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);
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return input;
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},
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/**
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* From Morse Code operation.
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*
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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runFrom: (function() {
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let reversedTable = null;
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const reverseTable = function() {
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reversedTable = {};
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for (const letter in MorseCode.MORSE_TABLE) {
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const signal = MorseCode.MORSE_TABLE[letter];
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reversedTable[signal] = letter;
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}
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};
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return function(input, args) {
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if (reversedTable === null) {
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reverseTable();
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}
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const letterDelim = Utils.charRep[args[0]];
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const wordDelim = Utils.charRep[args[1]];
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input = input.replace(/-|‐|−|_|–|—|dash/ig, "<dash>"); //hyphen-minus|hyphen|minus-sign|undersore|en-dash|em-dash
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input = input.replace(/\.|·|dot/ig, "<dot>");
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let words = input.split(wordDelim);
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words = Array.prototype.map.call(words, function(word) {
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const signals = word.split(letterDelim);
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const letters = signals.map(function(signal) {
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return reversedTable[signal];
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});
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return letters.join("");
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});
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words = words.join(" ");
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return words;
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};
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})(),
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};
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export default MorseCode;
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