// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// Copyright the Browserify authors. MIT License.
// Ported from https://github.com/browserify/path-browserify/
// This module is browser compatible.

import {
  CHAR_BACKWARD_SLASH,
  CHAR_FORWARD_SLASH,
  CHAR_LOWERCASE_A,
  CHAR_LOWERCASE_Z,
  CHAR_UPPERCASE_A,
  CHAR_UPPERCASE_Z,
} from "../_common/constants.ts";

export function isPosixPathSeparator(code: number): boolean {
  return code === CHAR_FORWARD_SLASH;
}

export function isPathSeparator(code: number): boolean {
  return code === CHAR_FORWARD_SLASH || code === CHAR_BACKWARD_SLASH;
}

export function isWindowsDeviceRoot(code: number): boolean {
  return (
    (code >= CHAR_LOWERCASE_A && code <= CHAR_LOWERCASE_Z) ||
    (code >= CHAR_UPPERCASE_A && code <= CHAR_UPPERCASE_Z)
  );
}
