/
ensure_link.ts
53 lines (47 loc) · 1.56 KB
/
ensure_link.ts
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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import * as path from "../path/mod.ts";
import { ensureDir, ensureDirSync } from "./ensure_dir.ts";
import { exists, existsSync } from "./exists.ts";
import { getFileInfoType } from "./_util.ts";
/**
* Ensures that the hard link exists.
* If the directory structure does not exist, it is created.
*
* @param src the source file path. Directory hard links are not allowed.
* @param dest the destination link path
*/
export async function ensureLink(src: string, dest: string) {
if (await exists(dest)) {
const destStatInfo = await Deno.lstat(dest);
const destFilePathType = getFileInfoType(destStatInfo);
if (destFilePathType !== "file") {
throw new Error(
`Ensure path exists, expected 'file', got '${destFilePathType}'`,
);
}
return;
}
await ensureDir(path.dirname(dest));
await Deno.link(src, dest);
}
/**
* Ensures that the hard link exists.
* If the directory structure does not exist, it is created.
*
* @param src the source file path. Directory hard links are not allowed.
* @param dest the destination link path
*/
export function ensureLinkSync(src: string, dest: string): void {
if (existsSync(dest)) {
const destStatInfo = Deno.lstatSync(dest);
const destFilePathType = getFileInfoType(destStatInfo);
if (destFilePathType !== "file") {
throw new Error(
`Ensure path exists, expected 'file', got '${destFilePathType}'`,
);
}
return;
}
ensureDirSync(path.dirname(dest));
Deno.linkSync(src, dest);
}