Add script to generate emoji map from emojione data

scripts/generate-emoji.js

@@ -0,0 +1,70 @@
+"use strict";
+
+const request = require("request");
+const path = require("path");
+const fs = require("fs");
+const fuzzy = require("fuzzy");
+
+request.get({
+	url: "https://raw.githubusercontent.com/emojione/emojione/master/emoji_strategy.json",
+	json: true,
+}, (error, response, emojiStrategy) => {
+	const emojiMap = {};
+
+	for (const key in emojiStrategy) {
+		if (emojiStrategy.hasOwnProperty(key)) {
+			const shortname = prepareShortName(emojiStrategy[key].shortname);
+
+			// Skip tones, at least for now
+			if (shortname.indexOf("tone") > -1) {
+				continue;
+			}
+
+			const unicode = stringToUnicode(key);
+
+			emojiMap[shortname] = unicode;
+
+			for (let alternative of emojiStrategy[key].shortname_alternates) {
+				alternative = prepareShortName(alternative);
+
+				if (fuzzy.test(shortname, alternative) || fuzzy.test(alternative, shortname)) {
+					continue;
+				}
+
+				emojiMap[alternative] = unicode;
+			}
+		}
+	}
+
+	const output = JSON.stringify(emojiMap, null, 2) + "\n";
+
+	fs.writeFileSync(path.resolve(path.join(
+		__dirname,
+		"..",
+		"client",
+		"js",
+		"libs",
+		"simplemap.json"
+	)), output);
+});
+
+function stringToUnicode(key) {
+	return key
+		.split("-")
+		.map((c) => String.fromCodePoint(`0x${c}`))
+		.join("");
+}
+
+function prepareShortName(shortname) {
+	if (shortname === ":-1:") {
+		// We replace dashes, but should keep :-1: working
+		return "-1";
+	} else if (shortname === ":e-mail:") {
+		// :email: exists as an alternative, should figure out how to use it instead
+		return "email";
+	}
+
+	return shortname
+		.slice(1, -1)
+		.replace("-", "_");
+}