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std/path/windows/to_namespaced_path.ts

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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.// This module is browser compatible.
import { CHAR_BACKWARD_SLASH, CHAR_COLON, CHAR_DOT, CHAR_QUESTION_MARK,} from "../_common/constants.ts";import { isWindowsDeviceRoot } from "./_util.ts";import { resolve } from "./resolve.ts";
/** * Resolves path to a namespace path * @param path to resolve to namespace */export function toNamespacedPath(path: string): string { // Note: this will *probably* throw somewhere. if (typeof path !== "string") return path; if (path.length === 0) return "";
const resolvedPath = resolve(path);
if (resolvedPath.length >= 3) { if (resolvedPath.charCodeAt(0) === CHAR_BACKWARD_SLASH) { // Possible UNC root
if (resolvedPath.charCodeAt(1) === CHAR_BACKWARD_SLASH) { const code = resolvedPath.charCodeAt(2); if (code !== CHAR_QUESTION_MARK && code !== CHAR_DOT) { // Matched non-long UNC root, convert the path to a long UNC path return `\\\\?\\UNC\\${resolvedPath.slice(2)}`; } } } else if (isWindowsDeviceRoot(resolvedPath.charCodeAt(0))) { // Possible device root
if ( resolvedPath.charCodeAt(1) === CHAR_COLON && resolvedPath.charCodeAt(2) === CHAR_BACKWARD_SLASH ) { // Matched device root, convert the path to a long UNC path return `\\\\?\\${resolvedPath}`; } } }
return path;}