All: Extract note renderer to separate package (WIP) (#2206)

* Started updating to use external renderer package

* Added way to build renderer assets

* Done mobile compatilibty

* Upgrade joplin-renderer

* Added joplin-renderer package

ReactNativeClient/encodeAssets.js

@@ -0,0 +1,74 @@
+require('app-module-path').addPath(`${__dirname}`);
+
+const fs = require('fs-extra');
+const { dirname, fileExtension } = require('lib/path-utils');
+const md5 = require('md5');
+
+const rootDir = __dirname;
+const outputDir = `${rootDir}/pluginAssets`;
+
+var walk = function(dir) {
+	var results = [];
+	var list = fs.readdirSync(dir);
+	list.forEach(function(file) {
+		file = `${dir}/${file}`;
+		var stat = fs.statSync(file);
+		if (stat && stat.isDirectory()) {
+			results = results.concat(walk(file));
+		} else {
+			results.push(file);
+		}
+	});
+	return results;
+};
+
+async function encodeFile(sourcePath, destPath) {
+	const buffer = await fs.readFile(sourcePath);
+	const hash = md5(buffer.toString('base64'));
+	const js = `module.exports = \`${buffer.toString('base64')}\`;`;
+	const outputPath = `${outputDir}/${destPath}.base64.js`;
+	await fs.mkdirp(dirname(outputPath));
+	await fs.writeFile(outputPath, js);
+
+	const ext = fileExtension(sourcePath).toLowerCase();
+	let mime = 'application/octet-stream';
+	if (ext === 'js') mime = 'application/javascript';
+	if (ext === 'css') mime = 'text/css';
+
+	return {
+		encoding: 'base64',
+		name: destPath,
+		encodedName: `${destPath}.base64.js`,
+		mime: mime,
+		hash: hash,
+	};
+}
+
+async function main() {
+	await fs.mkdirp(outputDir);
+
+	const encodedFiles = [];
+	const sourceAssetDir = `${rootDir}/node_modules/joplin-renderer/assets`;
+	const files = walk(sourceAssetDir);
+
+	for (const file of files) {
+		const destFile = file.substr(sourceAssetDir.length + 1);
+		encodedFiles.push(await encodeFile(file, destFile));
+	}
+
+	const hashes = [];
+	const indexJs = [];
+	for (const file of encodedFiles) {
+		indexJs.push(`'${file.name}': { data: require('./${file.encodedName}'), mime: '${file.mime}', encoding: '${file.encoding}' },`);
+		hashes.push(file.hash);
+	}
+
+	const hash = md5(hashes.join(''));
+
+	await fs.writeFile(`${outputDir}/index.js`, `module.exports = {\nhash:"${hash}", files: {\n${indexJs.join('\n')}\n}\n};`);
+}
+
+main().catch((error) => {
+	console.error(error);
+	process.exit(1);
+});