export function getCwd(shell: IShellLaunchConfig, root: Uri, configHelper: ITerminalConfigHelper): string {
	if (shell.cwd) {
		return shell.cwd;
	}

	let cwd: string;

	// TODO: Handle non-existent customCwd
	if (!shell.ignoreConfigurationCwd) {
		// Evaluate custom cwd first
		const customCwd = configHelper.config.cwd;
		if (customCwd) {
			if (paths.isAbsolute(customCwd)) {
				cwd = customCwd;
			} else if (root) {
				cwd = paths.normalize(paths.join(root.fsPath, customCwd));
			}
		}
	}

	// If there was no custom cwd or it was relative with no workspace
	if (!cwd) {
		cwd = root ? root.fsPath : os.homedir();
	}

	return _sanitizeCwd(cwd);
}

export function dirname(resource: uri): uri {
	const dirname = paths.dirname(resource.path);
	if (resource.authority && dirname && !paths.isAbsolute(dirname)) {
		return null; // If a URI contains an authority component, then the path component must either be empty or begin with a slash ("/") character
	}

	return resource.with({
		path: dirname
	});
}

	constructor(public raw: DebugProtocol.Source, sessionId: string) {
		if (!raw) {
			this.raw = { name: UNKNOWN_SOURCE_LABEL };
		}
		this.available = this.raw.name !== UNKNOWN_SOURCE_LABEL;
		const path = this.raw.path || this.raw.name;
		if (this.raw.sourceReference > 0) {
			this.uri = uri.parse(`${DEBUG_SCHEME}:${encodeURIComponent(path)}?session=${encodeURIComponent(sessionId)}&ref=${this.raw.sourceReference}`);
		} else {
			if (paths.isAbsolute(path)) {
				this.uri = uri.file(path); // path should better be absolute!
			} else {
				this.uri = uri.parse(path);
			}
		}
	}

	constructor(public raw: DebugProtocol.Source, sessionId: string) {
		let path: string;
		if (!raw) {
			this.raw = { name: UNKNOWN_SOURCE_LABEL };
			this.available = false;
			path = `${DEBUG_SCHEME}:${UNKNOWN_SOURCE_LABEL}`;
		} else {
			path = this.raw.path || this.raw.name;
			this.available = true;
		}

		if (this.raw.sourceReference > 0) {
			this.uri = uri.parse(`${DEBUG_SCHEME}:${encodeURIComponent(path)}?session=${encodeURIComponent(sessionId)}&ref=${this.raw.sourceReference}`);
		} else {
			if (paths.isAbsolute(path)) {
				this.uri = uri.file(path);
			} else {
				// assume that path is a URI
				this.uri = uri.parse(path);
			}
		}
	}

export function getCwd(shell: IShellLaunchConfig, root?: Uri, customCwd?: string): string {
	if (shell.cwd) {
		return (typeof shell.cwd === 'object') ? shell.cwd.path : shell.cwd;
	}

	let cwd: string | undefined;

	// TODO: Handle non-existent customCwd
	if (!shell.ignoreConfigurationCwd && customCwd) {
		if (paths.isAbsolute(customCwd)) {
			cwd = customCwd;
		} else if (root) {
			cwd = paths.normalize(paths.join(root.fsPath, customCwd));
		}
	}

	// If there was no custom cwd or it was relative with no workspace
	if (!cwd) {
		cwd = root ? root.fsPath : os.homedir();
	}

	return _sanitizeCwd(cwd);
}

export function isAbsolutePath(resource: URI): boolean {
	return paths.isAbsolute(resource.path);
}

export function getAbsoluteGlob(folder: string, key: string): string {
	return paths.isAbsolute(key) ?
		key :
		path.join(folder, key);
}