import { intoCallbackAPIWithIntercept, MaybeEmpty } from "../_utils.ts";
import { getEncoding, FileOptions } from "./_fs_common.ts";import { fromFileUrl } from "../path.ts";
const { readFile: denoReadFile, readFileSync: denoReadFileSync } = Deno;
type ReadFileCallback = ( err: MaybeEmpty<Error>, data: MaybeEmpty<string | Uint8Array>) => void;
function maybeDecode( data: Uint8Array, encoding: string | null): string | Uint8Array { if (encoding === "utf8") { return new TextDecoder().decode(data); } return data;}
export function readFile( path: string | URL, optOrCallback: ReadFileCallback | FileOptions | string | undefined, callback?: ReadFileCallback): void { path = path instanceof URL ? fromFileUrl(path) : path; let cb: ReadFileCallback | undefined; if (typeof optOrCallback === "function") { cb = optOrCallback; } else { cb = callback; }
const encoding = getEncoding(optOrCallback);
intoCallbackAPIWithIntercept<Uint8Array, string | Uint8Array>( denoReadFile, (data: Uint8Array): string | Uint8Array => maybeDecode(data, encoding), cb, path );}
export function readFileSync( path: string | URL, opt?: FileOptions | string): string | Uint8Array { path = path instanceof URL ? fromFileUrl(path) : path; return maybeDecode(denoReadFileSync(path), getEncoding(opt));}