TypeScript IModeService.getModeId方法代碼示例

	public static colorize(modeService: IModeService, text: string, mimeType: string, options: IColorizerOptions): TPromise<string> {
		if (strings.startsWithUTF8BOM(text)) {
			text = text.substr(1);
		}
		let lines = text.split(/\r\n|\r|\n/);
		let language = modeService.getModeId(mimeType);

		options = options || {};
		if (typeof options.tabSize === 'undefined') {
			options.tabSize = 4;
		}

		// Send out the event to create the mode
		modeService.getOrCreateMode(language);

		let tokenizationSupport = TokenizationRegistry.get(language);
		if (tokenizationSupport) {
			return TPromise.as(_colorize(lines, options.tabSize, tokenizationSupport));
		}

		// wait 500ms for mode to load, then give up
		return TPromise.any([this._tokenizationSupportChangedPromise(language), TPromise.timeout(500)]).then(_ => {
			let tokenizationSupport = TokenizationRegistry.get(language);
			if (tokenizationSupport) {
				return _colorize(lines, options.tabSize, tokenizationSupport);
			}
			return _fakeColorize(lines, options.tabSize);
		});
	}

	public static colorize(modeService: IModeService, text: string, mimeType: string, options: IColorizerOptions | null | undefined): Promise<string> {
		let tabSize = 4;
		if (options && typeof options.tabSize === 'number') {
			tabSize = options.tabSize;
		}

		if (strings.startsWithUTF8BOM(text)) {
			text = text.substr(1);
		}
		let lines = text.split(/\r\n|\r|\n/);
		let language = modeService.getModeId(mimeType);
		if (!language) {
			return Promise.resolve(_fakeColorize(lines, tabSize));
		}

		// Send out the event to create the mode
		modeService.triggerMode(language);

		let tokenizationSupport = TokenizationRegistry.get(language);
		if (tokenizationSupport) {
			return Promise.resolve(_colorize(lines, tabSize, tokenizationSupport));
		}

		return new Promise<string>((resolve, reject) => {
			let listener: IDisposable | null = null;
			let timeout: TimeoutTimer | null = null;

			const execute = () => {
				if (listener) {
					listener.dispose();
					listener = null;
				}
				if (timeout) {
					timeout.dispose();
					timeout = null;
				}
				const tokenizationSupport = TokenizationRegistry.get(language!);
				if (tokenizationSupport) {
					return resolve(_colorize(lines, tabSize, tokenizationSupport));
				}
				return resolve(_fakeColorize(lines, tabSize));
			};

			// wait 500ms for mode to load, then give up
			timeout = new TimeoutTimer();
			timeout.cancelAndSet(execute, 500);
			listener = TokenizationRegistry.onDidChange((e) => {
				if (e.changedLanguages.indexOf(language!) >= 0) {
					execute();
				}
			});
		});
	}

export function detectModeId(modelService: IModelService, modeService: IModeService, resource: uri): string | null {
	if (!resource) {
		return null; // we need a resource at least
	}

	let modeId: string | null = null;

	// Data URI: check for encoded metadata
	if (resource.scheme === Schemas.data) {
		const metadata = DataUri.parseMetaData(resource);
		const mime = metadata.get(DataUri.META_DATA_MIME);

		if (mime) {
			modeId = modeService.getModeId(mime);
		}
	}

	// Any other URI: check for model if existing
	else {
		const model = modelService.getModel(resource);
		if (model) {
			modeId = model.getModeId();
		}
	}

	// only take if the mode is specific (aka no just plain text)
	if (modeId && modeId !== PLAINTEXT_MODE_ID) {
		return modeId;
	}

	// otherwise fallback to path based detection
	let path: string | undefined;
	if (resource.scheme === Schemas.data) {
		const metadata = DataUri.parseMetaData(resource);
		path = metadata.get(DataUri.META_DATA_LABEL);
	} else {
		path = resource.path.toLowerCase();
	}

	if (path) {
		return modeService.getModeIdByFilepathOrFirstLine(path);
	}

	return null; // finally - we do not know the mode id
}