Files
vscode/src/vs/workbench/node/extensionPoints.ts
2016-03-01 16:44:56 +01:00

330 lines
11 KiB
TypeScript

/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
'use strict';
import pfs = require('vs/base/node/pfs');
import {IExtensionDescription, IMessage} from 'vs/platform/extensions/common/extensions';
import Severity from 'vs/base/common/severity';
import {TPromise} from 'vs/base/common/winjs.base';
import {groupBy, values} from 'vs/base/common/collections';
import paths = require('vs/base/common/paths');
import json = require('vs/base/common/json');
import Types = require('vs/base/common/types');
import {isValidExtensionDescription} from 'vs/platform/extensions/node/extensionValidator';
import * as semver from 'semver';
const MANIFEST_FILE = 'package.json';
const devMode = !!process.env['VSCODE_DEV'];
interface NlsConfiguration {
locale: string;
pseudo: boolean;
}
const nlsConfig = function(): NlsConfiguration {
if (process.env['VSCODE_NLS_CONFIG']) {
try {
return JSON.parse(process.env['VSCODE_NLS_CONFIG']);
} catch (err) {
return {
locale: undefined,
pseudo: false
};
}
}
}();
export class MessagesCollector {
private _messages: IMessage[];
constructor() {
this._messages = [];
}
public getMessages(): IMessage[] {
return this._messages;
}
private _msg(source:string, type:Severity, message:string): void {
this._messages.push({
type: type,
message: message,
source: source
});
}
public error(source:string, message: string): void {
this._msg(source, Severity.Error, message);
}
public warn(source:string, message: string): void {
this._msg(source, Severity.Warning, message);
}
public info(source:string, message: string): void {
this._msg(source, Severity.Info, message);
}
}
abstract class ExtensionManifestHandler {
protected _ourVersion: string;
protected _collector: MessagesCollector;
protected _absoluteFolderPath: string;
protected _isBuiltin: boolean;
protected _absoluteManifestPath: string;
constructor(ourVersion: string, collector: MessagesCollector, absoluteFolderPath:string, isBuiltin:boolean) {
this._ourVersion = ourVersion;
this._collector = collector;
this._absoluteFolderPath = absoluteFolderPath;
this._isBuiltin = isBuiltin;
this._absoluteManifestPath = paths.join(absoluteFolderPath, MANIFEST_FILE);
}
}
class ExtensionManifestParser extends ExtensionManifestHandler {
public parse(): TPromise<IExtensionDescription> {
return pfs.readFile(this._absoluteManifestPath).then((manifestContents) => {
let errors: string[] = [];
let extensionDescription: IExtensionDescription = json.parse(manifestContents.toString(), errors);
if (errors.length > 0) {
errors.forEach((error) => {
this._collector.error(this._absoluteFolderPath, 'Failed to parse ' + this._absoluteManifestPath + ': ' + error);
});
return null;
}
return extensionDescription;
}, (err) => {
this._collector.error(this._absoluteFolderPath, 'Cannot read file ' + this._absoluteManifestPath + ': ' + err.message);
return null;
});
}
}
class ExtensionManifestNLSReplacer extends ExtensionManifestHandler {
public replaceNLS(extensionDescription:IExtensionDescription): TPromise<IExtensionDescription> {
let extension = paths.extname(this._absoluteManifestPath);
let basename = this._absoluteManifestPath.substr(0, this._absoluteManifestPath.length - extension.length);
return pfs.fileExists(basename + '.nls' + extension).then(exists => {
if (!exists) {
return extensionDescription;
}
return ExtensionManifestNLSReplacer.findMessageBundle(basename).then(messageBundle => {
if (!messageBundle) {
return extensionDescription;
}
return pfs.readFile(messageBundle).then(messageBundleContent => {
let errors: string[] = [];
let messages: { [key: string]: string; } = json.parse(messageBundleContent.toString(), errors);
if (errors.length > 0) {
errors.forEach((error) => {
this._collector.error(this._absoluteFolderPath, 'Failed to parse ' + messageBundle + ': ' + error);
});
return extensionDescription;
}
ExtensionManifestNLSReplacer._replaceNLStrings(extensionDescription, messages, this._collector, this._absoluteFolderPath);
return extensionDescription;
}, (err) => {
this._collector.error(this._absoluteFolderPath, 'Cannot read file ' + messageBundle + ': ' + err.message);
return null;
});
});
});
}
private static findMessageBundle(basename: string): TPromise<string> {
return new TPromise<string>((c ,e, p) => {
function loop(basename: string, locale: string): void {
let toCheck = `${basename}.nls.${locale}.json`;
pfs.fileExists(toCheck).then(exists => {
if (exists) {
c(toCheck);
}
let index = locale.lastIndexOf('-');
if (index === -1) {
c(`${basename}.nls.json`);
} else {
locale = locale.substring(0, index);
loop(basename, locale);
}
});
}
if (devMode || nlsConfig.pseudo || !nlsConfig.locale) {
return c(basename + '.nls.json');
}
loop(basename, nlsConfig.locale);
});
}
/**
* This routine make the following assumptions:
* The root element is a object literal
* Strings to replace are one values of a key. So for example string[] are ignored.
* This is done to speed things up.
*/
private static _replaceNLStrings<T>(literal: T, messages: { [key: string]: string; }, collector: MessagesCollector, messageScope:string): void {
Object.keys(literal).forEach(key => {
if (literal.hasOwnProperty(key)) {
let value = literal[key];
if (Types.isString(value)) {
let str = <string>value;
let length = str.length;
if (length > 1 && str[0] === '%' && str[length - 1] === '%') {
let messageKey = str.substr(1, length - 2);
let message = messages[messageKey];
if (message) {
if (nlsConfig.pseudo) {
// FF3B and FF3D is the Unicode zenkaku representation for [ and ]
message = '\uFF3B' + message.replace(/[aouei]/g, '$&$&') + '\uFF3D';
}
literal[key] = message;
} else {
collector.warn(messageScope, `Couldn't find message for key ${messageKey}.`);
}
}
} else if (Types.isObject(value)) {
ExtensionManifestNLSReplacer._replaceNLStrings(value, messages, collector, messageScope);
} else if (Types.isArray(value)) {
(<any[]>value).forEach(element => {
if (Types.isObject(element)) {
ExtensionManifestNLSReplacer._replaceNLStrings(element, messages, collector, messageScope);
}
});
}
}
});
}
}
class ExtensionManifestValidator extends ExtensionManifestHandler {
validate(extensionDescription:IExtensionDescription): IExtensionDescription {
extensionDescription.isBuiltin = this._isBuiltin;
let notices: string[] = [];
if (!isValidExtensionDescription(this._ourVersion, this._absoluteFolderPath, extensionDescription, notices)) {
notices.forEach((error) => {
this._collector.error(this._absoluteFolderPath, error);
});
return null;
}
// in this case the notices are warnings
notices.forEach((error) => {
this._collector.warn(this._absoluteFolderPath, error);
});
// id := `publisher.name`
extensionDescription.id = `${ extensionDescription.publisher }.${ extensionDescription.name }`;
// main := absolutePath(`main`)
if (extensionDescription.main) {
extensionDescription.main = paths.normalize(paths.join(this._absoluteFolderPath, extensionDescription.main));
}
extensionDescription.extensionFolderPath = this._absoluteFolderPath;
return extensionDescription;
}
}
export class ExtensionScanner {
/**
* Read the extension defined in `absoluteFolderPath`
*/
public static scanExtension(
version: string,
collector: MessagesCollector,
absoluteFolderPath:string,
isBuiltin:boolean
) : TPromise<IExtensionDescription>
{
absoluteFolderPath = paths.normalize(absoluteFolderPath);
let parser = new ExtensionManifestParser(version, collector, absoluteFolderPath, isBuiltin);
return parser.parse().then((extensionDescription) => {
if (extensionDescription === null) {
return null;
}
let nlsReplacer = new ExtensionManifestNLSReplacer(version, collector, absoluteFolderPath, isBuiltin);
return nlsReplacer.replaceNLS(extensionDescription);
}).then((extensionDescription) => {
if (extensionDescription === null) {
return null;
}
let validator = new ExtensionManifestValidator(version, collector, absoluteFolderPath, isBuiltin);
return validator.validate(extensionDescription);
});
}
/**
* Scan a list of extensions defined in `absoluteFolderPath`
*/
public static scanExtensions(
version: string,
collector: MessagesCollector,
absoluteFolderPath:string,
isBuiltin:boolean
) : TPromise<IExtensionDescription[]>
{
let obsolete = TPromise.as({});
if (!isBuiltin) {
obsolete = pfs.readFile(paths.join(absoluteFolderPath, '.obsolete'), 'utf8')
.then(raw => JSON.parse(raw))
.then(null, err => ({}));
}
return obsolete.then(obsolete => {
return pfs.readDirsInDir(absoluteFolderPath)
.then(folders => TPromise.join(folders.map(f => this.scanExtension(version, collector, paths.join(absoluteFolderPath, f), isBuiltin))))
.then(extensionDescriptions => extensionDescriptions.filter(item => item !== null))
// TODO: align with extensionsService
.then(extensionDescriptions => extensionDescriptions.filter(p => !obsolete[`${ p.publisher }.${ p.name }-${ p.version }`]))
.then(extensionDescriptions => {
const extensionDescriptionsById = values(groupBy(extensionDescriptions, p => p.id));
return extensionDescriptionsById.map(p => p.sort((a, b) => semver.rcompare(a.version, b.version))[0]);
})
.then(null, err => {
collector.error(absoluteFolderPath, err);
return [];
});
});
}
/**
* Combination of scanExtension and scanExtensions: If an extension manifest is found at root, we load just this extension,
* otherwise we assume the folder contains multiple extensions.
*/
public static scanOneOrMultipleExtensions(
version: string,
collector: MessagesCollector,
absoluteFolderPath:string,
isBuiltin:boolean
) : TPromise<IExtensionDescription[]>
{
return pfs.fileExists(paths.join(absoluteFolderPath, MANIFEST_FILE)).then((exists) => {
if (exists) {
return this.scanExtension(version, collector, absoluteFolderPath, isBuiltin).then((extensionDescription) => {
if (extensionDescription === null) {
return [];
}
return [extensionDescription];
});
}
return this.scanExtensions(version, collector, absoluteFolderPath, isBuiltin);
}, (err) => {
collector.error(absoluteFolderPath, err);
return [];
});
}
}