@lonu/stc
Version:
A tool for converting OpenApi/Swagger/Apifox into code.
78 lines (77 loc) • 2.96 kB
JavaScript
// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
import { assertPath } from "../_common/assert_path.js";
import { isPathSeparator } from "./_util.js";
import { normalize } from "./normalize.js";
import { fromFileUrl } from "./from_file_url.js";
/**
* Join all given a sequence of `paths`,then normalizes the resulting path.
*
* @example Usage
* ```ts
* import { join } from "@std/path/windows/join";
* import { assertEquals } from "@std/assert";
*
* assertEquals(join("C:\\foo", "bar", "baz\\.."), "C:\\foo\\bar");
* assertEquals(join(new URL("file:///C:/foo"), "bar", "baz\\.."), "C:\\foo\\bar");
* ```
*
* @param path The path to join. This can be string or file URL.
* @param paths The paths to join.
* @returns The joined path.
*/
export function join(path, ...paths) {
if (path instanceof URL) {
path = fromFileUrl(path);
}
paths = path ? [path, ...paths] : paths;
paths.forEach((path) => assertPath(path));
paths = paths.filter((path) => path.length > 0);
if (paths.length === 0)
return ".";
// Make sure that the joined path doesn't start with two slashes, because
// normalize() will mistake it for an UNC path then.
//
// This step is skipped when it is very clear that the user actually
// intended to point at an UNC path. This is assumed when the first
// non-empty string arguments starts with exactly two slashes followed by
// at least one more non-slash character.
//
// Note that for normalize() to treat a path as an UNC path it needs to
// have at least 2 components, so we don't filter for that here.
// This means that the user can use join to construct UNC paths from
// a server name and a share name; for example:
// path.join('//server', 'share') -> '\\\\server\\share\\'
let needsReplace = true;
let slashCount = 0;
const firstPart = paths[0];
if (isPathSeparator(firstPart.charCodeAt(0))) {
++slashCount;
const firstLen = firstPart.length;
if (firstLen > 1) {
if (isPathSeparator(firstPart.charCodeAt(1))) {
++slashCount;
if (firstLen > 2) {
if (isPathSeparator(firstPart.charCodeAt(2)))
++slashCount;
else {
// We matched a UNC path in the first part
needsReplace = false;
}
}
}
}
}
let joined = paths.join("\\");
if (needsReplace) {
// Find any more consecutive slashes we need to replace
for (; slashCount < joined.length; ++slashCount) {
if (!isPathSeparator(joined.charCodeAt(slashCount)))
break;
}
// Replace the slashes if needed
if (slashCount >= 2)
joined = `\\${joined.slice(slashCount)}`;
}
return normalize(joined);
}