Allow transforming to any format
This changes around `utils/use_require.js` to be able to generate any of AMD (RequireJS), CommonJS, SystemJS, or UMD modules. The three former also include support for translating `vnc.html`, producing a full "app" version of noVNC.
This commit is contained in:
Solly Ross
+101
-80
@@ -4,118 +4,139 @@ var path = require('path');
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var program = require('commander');
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var fs = require('fs');
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var fse = require('fs-extra');
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var browserify = require('browserify');
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var make_modules_transform = require('./make-module-transform');
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var babelify = require("babelify");
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const SUPPORTED_FORMATS = new Set(['amd', 'commonjs', 'systemjs', 'umd']);
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program
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.option('-b, --browserify', 'create a browserify bundled app')
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.option('--as-require', 'output files using "require" instead of ES6 import and export')
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.option('--as [format]', `output files using various import formats instead of ES6 import and export. Supports ${Array.from(SUPPORTED_FORMATS)}.`)
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.option('-m, --with-source-maps [type]', 'output source maps when not generating a bundled app (type may be empty for external source maps, inline for inline source maps, or both) ')
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.option('--with-app', 'process app files as well as core files')
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.parse(process.argv);
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// the various important paths
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var main_path = path.resolve(__dirname, '..');
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var core_path = path.resolve(__dirname, '..', 'core');
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var app_path = path.resolve(__dirname, '..', 'app');
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var vendor_path = path.resolve(__dirname, '..', 'vendor');
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var out_dir_base = path.resolve(__dirname, '..', 'build');
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var lib_dir_base = path.resolve(__dirname, '..', 'lib');
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var make_browserify = function (src_files, opts) {
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// change to the root noVNC directory
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process.chdir(path.resolve(__dirname, '..'));
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// walkDir *recursively* walks directories trees,
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// calling the callback for all normal files found.
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var walkDir = function (base_path, cb) {
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fs.readdir(base_path, (err, files) => {
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if (err) throw err;
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var b = browserify(src_files, opts);
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files.map((filename) => path.join(base_path, filename)).forEach((filepath) => {
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fs.lstat(filepath, (err, stats) => {
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if (err) throw err;
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// register the transforms
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b.transform(make_modules_transform);
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b.transform(babelify,
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{ plugins: ["add-module-exports", "transform-es2015-modules-commonjs"] });
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return b;
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};
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var make_full_app = function () {
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// make sure the output directory exists
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fse.ensureDir(out_dir_base);
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// actually bundle the files into a browserified bundled
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var ui_file = path.join(app_path, 'ui.js');
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var b = make_browserify(ui_file, {});
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var app_file = path.join(out_dir_base, 'app.js');
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b.bundle().pipe(fs.createWriteStream(app_file));
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// copy over app-related resources (images, styles, etc)
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var src_dir_app = path.join(__dirname, '..', 'app');
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fs.readdir(src_dir_app, function (err, files) {
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if (err) { throw err; }
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files.forEach(function (src_file) {
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var src_file_path = path.resolve(src_dir_app, src_file);
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var out_file_path = path.resolve(out_dir_base, src_file);
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var ext = path.extname(src_file);
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if (ext === '.js' || ext === '.html') return;
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fse.copy(src_file_path, out_file_path, function (err) {
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if (err) { throw err; }
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console.log("Copied file(s) from " + src_file_path + " to " + out_file_path);
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if (stats.isSymbolicLink()) return;
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if (stats.isFile()) cb(filepath);
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if (stats.isDirectory()) walkDir(filepath, cb);
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});
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});
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});
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};
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var transform_html = function (new_script) {
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// write out the modified vnc.html file that works with the bundle
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var src_html_path = path.resolve(__dirname, '..', 'vnc.html');
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var out_html_path = path.resolve(out_dir_base, 'vnc.html');
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fs.readFile(src_html_path, function (err, contents_raw) {
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fs.readFile(src_html_path, (err, contents_raw) => {
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if (err) { throw err; }
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var contents = contents_raw.toString();
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contents = contents.replace(/="app\//g, '="');
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var start_marker = '<!-- begin scripts -->\n';
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var end_marker = '<!-- end scripts -->';
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var start_ind = contents.indexOf(start_marker) + start_marker.length;
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var end_ind = contents.indexOf(end_marker, start_ind);
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contents = contents.slice(0, start_ind) + '<script src="app.js"></script>\n' + contents.slice(end_ind);
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contents = contents.slice(0, start_ind) + `${new_script}\n` + contents.slice(end_ind);
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console.log(`Writing ${out_html_path}`);
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fs.writeFile(out_html_path, contents, function (err) {
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if (err) { throw err; }
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console.log("Wrote " + out_html_path);
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});
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});
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};
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var make_lib_files = function (use_require) {
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// make sure the output directory exists
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fse.ensureDir(lib_dir_base);
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var through = require('through2');
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var deps = {};
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var rfb_file = path.join(core_path, 'rfb.js');
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var b = make_browserify(rfb_file, {});
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b.on('transform', function (tr, file) {
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if (tr._is_make_module) {
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var new_path = path.join(lib_dir_base, path.relative(core_path, file));
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fse.ensureDir(path.dirname(new_path));
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console.log("Writing " + new_path)
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var fileStream = fs.createWriteStream(new_path);
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if (use_require) {
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var babelificate = babelify(file,
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{ plugins: ["add-module-exports", "transform-es2015-modules-commonjs"] });
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tr.pipe(babelificate);
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tr = babelificate;
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}
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tr.pipe(fileStream);
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}
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});
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b.bundle();
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};
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if (program.browserify) {
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make_full_app();
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} else {
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make_lib_files(program.asRequire);
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}
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var make_lib_files = function (import_format, source_maps, with_app_dir) {
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if (!import_format) {
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throw new Error("you must specify an import format to generate compiled noVNC libraries");
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} else if (!SUPPORTED_FORMATS.has(import_format)) {
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throw new Error(`unsupported output format "${import_format}" for import/export -- only ${Array.from(SUPPORTED_FORMATS)} are supported`);
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}
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// NB: we need to make a copy of babel_opts, since babel sets some defaults on it
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const babel_opts = () => ({
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plugins: [`transform-es2015-modules-${import_format}`],
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ast: false,
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sourceMaps: source_maps,
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});
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const babel = require('babel-core');
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var in_path;
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if (with_app_dir) {
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var out_path_base = out_dir_base;
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in_path = main_path;
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} else {
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var out_path_base = lib_dir_base;
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}
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fse.ensureDirSync(out_path_base);
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const helpers = require('./use_require_helpers');
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const helper = helpers[import_format];
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var handleDir = (js_only, in_path_base, filename) => {
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const out_path = path.join(out_path_base, path.relative(in_path_base, filename));
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if(path.extname(filename) !== '.js') {
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if (!js_only) {
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console.log(`Writing ${out_path}`);
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fse.copy(filename, out_path, (err) => { if (err) throw err; });
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}
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return; // skip non-javascript files
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}
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fse.ensureDir(path.dirname(out_path), () => {
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const opts = babel_opts();
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if (helper && helpers.optionsOverride) {
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helper.optionsOverride(opts);
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}
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babel.transformFile(filename, babel_opts(), (err, res) => {
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console.log(`Writing ${out_path}`);
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if (err) throw err;
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var {code, map, ast} = res;
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if (source_maps === true) {
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// append URL for external source map
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code += `\n//# sourceMappingURL=${path.basename(out_path)}.map\n`;
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}
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fs.writeFile(out_path, code, (err) => { if (err) throw err; });
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if (source_maps === true || source_maps === 'both') {
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console.log(` and ${out_path}.map`);
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fs.writeFile(`${out_path}.map`, JSON.stringify(map), (err) => { if (err) throw err; });
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}
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});
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});
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};
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walkDir(core_path, handleDir.bind(null, true, in_path || core_path));
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walkDir(vendor_path, handleDir.bind(null, true, in_path || main_path));
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if (with_app_dir) {
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walkDir(app_path, handleDir.bind(null, false, in_path || app_path));
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const out_app_path = path.join(out_path_base, 'app.js');
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if (helper && helper.appWriter) {
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console.log(`Writing ${out_app_path}`);
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let out_script = helper.appWriter(out_path_base, out_app_path);
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transform_html(out_script);
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} else {
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console.error(`Unable to generate app for the ${import_format} format!`);
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}
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}
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};
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make_lib_files(program.as, program.withSourceMaps, program.withApp);
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