@lonu/stc
Version:
A tool for converting OpenApi/Swagger/Apifox into code.
59 lines (58 loc) • 2.16 kB
JavaScript
// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
import { assertArg } from "../_common/normalize.js";
import { normalizeString } from "../_common/normalize_string.js";
import { isPosixPathSeparator } from "./_util.js";
import { fromFileUrl } from "./from_file_url.js";
/**
* Normalize the `path`, resolving `'..'` and `'.'` segments.
* Note that resolving these segments does not necessarily mean that all will be eliminated.
* A `'..'` at the top-level will be preserved, and an empty path is canonically `'.'`.
*
* @example Usage
* ```ts
* import { normalize } from "@std/path/posix/normalize";
* import { assertEquals } from "@std/assert";
*
* assertEquals(normalize("/foo/bar//baz/asdf/quux/.."), "/foo/bar/baz/asdf");
* assertEquals(normalize(new URL("file:///foo/bar//baz/asdf/quux/..")), "/foo/bar/baz/asdf/");
* ```
*
* @example Working with URLs
*
* Note: This function will remove the double slashes from a URL's scheme.
* Hence, do not pass a full URL to this function. Instead, pass the pathname of
* the URL.
*
* ```ts
* import { normalize } from "@std/path/posix/normalize";
* import { assertEquals } from "@std/assert";
*
* const url = new URL("https://deno.land");
* url.pathname = normalize("//std//assert//.//mod.ts");
* assertEquals(url.href, "https://deno.land/std/assert/mod.ts");
*
* url.pathname = normalize("std/assert/../async/retry.ts");
* assertEquals(url.href, "https://deno.land/std/async/retry.ts");
* ```
*
* @param path The path to normalize.
* @returns The normalized path.
*/
export function normalize(path) {
if (path instanceof URL) {
path = fromFileUrl(path);
}
assertArg(path);
const isAbsolute = isPosixPathSeparator(path.charCodeAt(0));
const trailingSeparator = isPosixPathSeparator(path.charCodeAt(path.length - 1));
// Normalize the path
path = normalizeString(path, !isAbsolute, "/", isPosixPathSeparator);
if (path.length === 0 && !isAbsolute)
path = ".";
if (path.length > 0 && trailingSeparator)
path += "/";
if (isAbsolute)
return `/${path}`;
return path;
}