@lonu/stc
Version:
A tool for converting OpenApi/Swagger/Apifox into code.
39 lines (38 loc) • 1.14 kB
JavaScript
// Copyright 2018-2025 the Deno authors. MIT license.
// This module is browser compatible.
import { CHAR_COLON } from "../_common/constants.js";
import { assertPath } from "../_common/assert_path.js";
import { isPathSeparator, isWindowsDeviceRoot } from "./_util.js";
/**
* Verifies whether provided path is absolute.
*
* @example Usage
* ```ts
* import { isAbsolute } from "@std/path/windows/is-absolute";
* import { assert, assertFalse } from "@std/assert";
*
* assert(isAbsolute("C:\\foo\\bar"));
* assertFalse(isAbsolute("..\\baz"));
* ```
*
* @param path The path to verify.
* @returns `true` if the path is absolute, `false` otherwise.
*/
export function isAbsolute(path) {
assertPath(path);
const len = path.length;
if (len === 0)
return false;
const code = path.charCodeAt(0);
if (isPathSeparator(code)) {
return true;
}
else if (isWindowsDeviceRoot(code)) {
// Possible device root
if (len > 2 && path.charCodeAt(1) === CHAR_COLON) {
if (isPathSeparator(path.charCodeAt(2)))
return true;
}
}
return false;
}