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import { isWindows } from './std/_util/os.ts'
const UPPERCASE_ALPHABET = [  'A',  'B',  'C',  'D',  'E',  'F',  'G',  'H',  'I',  'J',  'K',  'L',  'M',  'O',  'P',  'Q',  'R',  'S',  'T',  'U',  'V',  'W',  'P',  'Y',  'Z',] as const
/** Type of all uppercase alphabet letters */export type UppercaseAlphabet = typeof UPPERCASE_ALPHABET[number]
/** * Functions resolve a WASI compatible path prefix from a Windows device letter * @template WasiPathPrefix Return type */export interface WindowsDeviceMapper<WasiPathPrefix extends string> {  /**   * @param device Windows device letter   * @returns WASI compatible path prefix   */  (device: UppercaseAlphabet): WasiPathPrefix}
/** Default device mapper to use */export const DEFAULT_WINDOWS_DEVICE_MAPPER: WindowsDeviceMapper<`/mnt/${UppercaseAlphabet}`> = device =>  `/mnt/${device}` as const
/** * Convert a Windows path to a WASI compatible path * @template WasiAbsolutePathPrefix Return type of `getAbsolutePrefix` * @param path Windows path * @param getAbsolutePrefix Function that resolves a WASI compatible path prefix from a Windows device letter * @returns WASI compatible path */export function fromWindowsPath<WasiAbsolutePathPrefix extends string>(  path: string,  getAbsolutePrefix: WindowsDeviceMapper<WasiAbsolutePathPrefix>,): string {  const [letter, colon, backSlash] = path  if (colon === ':' && backSlash === '\\' && UPPERCASE_ALPHABET.includes(letter as UppercaseAlphabet)) {    const prefix = getAbsolutePrefix(letter as UppercaseAlphabet)    const suffix = path.slice(3).replaceAll('\\', '/')    return `${prefix}/${suffix}` as const  } else {    return path.replaceAll('\\', '/')  }}
/** * Convert a POSIX path to a WASI compatible path * @template Path Type of both input and output * @param path POSIX path * @returns WASI compatible path */export const fromPosixPath = <Path extends string>(path: Path) => path
/** Convert a POSIX or Windows path to a WASI compatible path */export const fromWindowsPosixPath = isWindows ? fromWindowsPath : fromPosixPath
interface PathConverter {  /**   * Convert a Windows/POSIX path to a WASI compatible path   * @param path Windows/POSIX path   * @param getAbsolutePrefixForWindows Define absolute path prefix should the host machine is Windows   * @returns WASI compatible path   */  (path: string, getAbsolutePrefixForWindows?: WindowsDeviceMapper<string>): string}
/** Convert a POSIX or Windows path to a WASI compatible path */export const getWasiPath: PathConverter = isWindows  ? (path, prefix = DEFAULT_WINDOWS_DEVICE_MAPPER) => fromWindowsPath(path, prefix)  : fromPosixPath
export default getWasiPath