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https://github.com/denoland/deno.git
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103 lines
2.8 KiB
TypeScript
103 lines
2.8 KiB
TypeScript
import { existsSync } from "../../fs/mod.ts";
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import { fromFileUrl } from "../path.ts";
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import { getOpenOptions } from "./_fs_common.ts";
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type openFlags =
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| "a"
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| "ax"
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| "a+"
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| "ax+"
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| "as"
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| "as+"
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| "r"
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| "r+"
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| "rs+"
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| "w"
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| "wx"
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| "w+"
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| "wx+";
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type openCallback = (err: Error | undefined, fd: number) => void;
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function convertFlagAndModeToOptions(
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flag?: openFlags,
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mode?: number,
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): Deno.OpenOptions | undefined {
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if (!flag && !mode) return undefined;
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if (!flag && mode) return { mode };
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return { ...getOpenOptions(flag), mode };
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}
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export function open(path: string | URL, callback: openCallback): void;
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export function open(
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path: string | URL,
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flags: openFlags,
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callback: openCallback,
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): void;
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export function open(
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path: string | URL,
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flags: openFlags,
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mode: number,
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callback: openCallback,
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): void;
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export function open(
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path: string | URL,
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flagsOrCallback: openCallback | openFlags,
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callbackOrMode?: openCallback | number,
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maybeCallback?: openCallback,
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) {
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const flags = typeof flagsOrCallback === "string"
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? flagsOrCallback
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: undefined;
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const callback = typeof flagsOrCallback === "function"
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? flagsOrCallback
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: typeof callbackOrMode === "function"
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? callbackOrMode
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: maybeCallback;
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const mode = typeof callbackOrMode === "number" ? callbackOrMode : undefined;
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path = path instanceof URL ? fromFileUrl(path) : path;
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if (!callback) throw new Error("No callback function supplied");
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if (["ax", "ax+", "wx", "wx+"].includes(flags || "") && existsSync(path)) {
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const err = new Error(`EEXIST: file already exists, open '${path}'`);
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callback(err, 0);
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} else {
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if (flags === "as" || flags === "as+") {
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try {
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const res = openSync(path, flags, mode);
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callback(undefined, res);
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} catch (error) {
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callback(error, error);
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}
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return;
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}
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Deno.open(path, convertFlagAndModeToOptions(flags, mode))
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.then((file) => callback(undefined, file.rid))
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.catch((err) => callback(err, err));
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}
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}
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export function openSync(path: string | URL): number;
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export function openSync(path: string | URL, flags?: openFlags): number;
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export function openSync(path: string | URL, mode?: number): number;
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export function openSync(
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path: string | URL,
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flags?: openFlags,
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mode?: number,
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): number;
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export function openSync(
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path: string | URL,
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flagsOrMode?: openFlags | number,
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maybeMode?: number,
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) {
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const flags = typeof flagsOrMode === "string" ? flagsOrMode : undefined;
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const mode = typeof flagsOrMode === "number" ? flagsOrMode : maybeMode;
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path = path instanceof URL ? fromFileUrl(path) : path;
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if (["ax", "ax+", "wx", "wx+"].includes(flags || "") && existsSync(path)) {
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throw new Error(`EEXIST: file already exists, open '${path}'`);
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}
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return Deno.openSync(path, convertFlagAndModeToOptions(flags, mode)).rid;
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}
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