Initial Code Layering (#3788)

* working on formatting

* fixed basic lint errors; starting moving things to their appropriate location

* formatting

* update tslint to match the version of vscode we have

* remove unused code

* work in progress fixing layering

* formatting

* moved connection management service to platform

* formatting

* add missing file

* moving more servies

* formatting

* moving more services

* formatting

* wip

* moving more services

* formatting

* revert back tslint rules

* move css file

* add missing svgs

src/sql/platform/node/pathUtilities.ts

@@ -0,0 +1,52 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+
+import * as path from 'vs/base/common/paths';
+import * as os from 'os';
+
+import URI from 'vs/base/common/uri';
+import { IWorkspaceContextService, WorkbenchState } from 'vs/platform/workspace/common/workspace';
+import { Schemas } from 'vs/base/common/network';
+
+export const FILE_SCHEMA: string = 'file';
+
+export function resolveCurrentDirectory(uri: string, rootPath: string): string {
+	let sqlUri = URI.parse(uri);
+	let currentDirectory: string;
+
+	// use current directory of the sql file if sql file is saved
+	if (sqlUri.scheme === FILE_SCHEMA) {
+		currentDirectory = path.dirname(sqlUri.fsPath);
+	} else if (sqlUri.scheme === Schemas.untitled) {
+		// if sql file is unsaved/untitled but a workspace is open use workspace root
+		let root = rootPath;
+		if (root) {
+			currentDirectory = root;
+		} else {
+			// use temp directory
+			currentDirectory = os.tmpdir();
+		}
+	} else {
+		currentDirectory = path.dirname(sqlUri.path);
+	}
+	return currentDirectory;
+}
+
+export function resolveFilePath(uri: string, filePath: string, rootPath: string): string {
+	let currentDirectory = resolveCurrentDirectory(uri, rootPath);
+	return path.normalize(path.join(currentDirectory, filePath));
+}
+
+export function getRootPath(contextService: IWorkspaceContextService): string {
+	let isWorkspace = contextService.getWorkbenchState() === WorkbenchState.WORKSPACE;
+	if (isWorkspace) {
+		let folder = contextService.getWorkspace().folders[0];
+		if (folder && folder.uri) {
+			return folder.uri.fsPath;
+		}
+	}
+
+	return undefined;
+}