export function bundleLanguageFiles()

in src/main.ts [212:253]

• 37 lines of code
• 7 McCabe index (conditional complexity)

export function bundleLanguageFiles(): ThroughStream {
	interface MapValue {
		base: string;
		content: ExtensionLanguageBundle;
	}
	const bundles: Map<MapValue> = Object.create(null);
	function getModuleKey(relativeFile: string): string {
		return relativeFile.match(/(.*)\.nls\.(?:.*\.)?json/)![1].replace(/\\/g, '/');
	}

	return through(function (this: ThroughStream, file: File) {
		const basename = path.basename(file.path);
		const matches = basename.match(/.nls\.(?:(.*)\.)?json/);
		if (!matches || !file.isBuffer()) {
			// Not an nls file.
			this.queue(file);
			return;
		}
		const language = matches[1] ? matches[1] : 'en';
		let bundle = bundles[language];
		if (!bundle) {
			bundle = {
				base: file.base,
				content: Object.create(null)
			};
			bundles[language] = bundle;
		}
		bundle.content[getModuleKey(file.relative)] = JSON.parse((file.contents as Buffer).toString('utf8'));
	}, function () {
		for (const language in bundles) {
			const bundle = bundles[language];
			const languageId = language === 'en' ? '' : `${language}.`;
			const file = new File({
				base: bundle.base,
				path: path.join(bundle.base, `nls.bundle.${languageId}json`),
				contents: new Buffer(JSON.stringify(bundle.content), 'utf8')
			});
			this.queue(file);
		}
		this.queue(null);
	});
}