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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import * as path from "../path/mod.ts";
import { ensureDir, ensureDirSync } from "./ensure_dir.ts";
import { getFileInfoType } from "./_util.ts";
/**
* Ensures that the file exists.
* If the file that is requested to be created is in directories that do not
* exist.
* these directories are created. If the file already exists,
* it is NOTMODIFIED.
* Requires the `--allow-read` and `--allow-write` flag.
*/
export async function ensureFile(filePath: string): Promise<void> {
try {
// if file exists
const stat = await Deno.lstat(filePath);
if (!stat.isFile) {
throw new Error(
`Ensure path exists, expected 'file', got '${getFileInfoType(stat)}'`
);
}
} catch (err) {
// if file not exists
if (err instanceof Deno.errors.NotFound) {
// ensure dir exists
await ensureDir(path.dirname(filePath));
// create file
await Deno.writeFile(filePath, new Uint8Array());
return;
}
throw err;
}
}
/**
* Ensures that the file exists.
* If the file that is requested to be created is in directories that do not
* exist,
* these directories are created. If the file already exists,
* it is NOT MODIFIED.
* Requires the `--allow-read` and `--allow-write` flag.
*/
export function ensureFileSync(filePath: string): void {
try {
// if file exists
const stat = Deno.lstatSync(filePath);
if (!stat.isFile) {
throw new Error(
`Ensure path exists, expected 'file', got '${getFileInfoType(stat)}'`
);
}
} catch (err) {
// if file not exists
if (err instanceof Deno.errors.NotFound) {
// ensure dir exists
ensureDirSync(path.dirname(filePath));
// create file
Deno.writeFileSync(filePath, new Uint8Array());
return;
}
throw err;
}
}
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