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// Copyright 2018-2019 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 "./utils.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.
*/
export async function ensureFile(filePath: string): Promise<void> {
let pathExists = false;
try {
// if file exists
const stat = await Deno.lstat(filePath);
pathExists = true;
if (!stat.isFile()) {
throw new Error(
`Ensure path exists, expected 'file', got '${getFileInfoType(stat)}'`
);
}
} catch (err) {
if (pathExists) {
throw err;
}
// if file not exists
// ensure dir exists
await ensureDir(path.dirname(filePath));
// create file
await Deno.writeFile(filePath, new Uint8Array());
}
}
/**
* Ensures that the file exists.
* If the file that is requested to be created is in directories that do not
* exist,
* these directories are created. If the file already exists,
* it is NOT MODIFIED.
*/
export function ensureFileSync(filePath: string): void {
let pathExists = false;
try {
// if file exists
const stat = Deno.statSync(filePath);
pathExists = true;
if (!stat.isFile()) {
throw new Error(
`Ensure path exists, expected 'file', got '${getFileInfoType(stat)}'`
);
}
} catch (err) {
if (pathExists) {
throw err;
}
// if file not exists
// ensure dir exists
ensureDirSync(path.dirname(filePath));
// create file
Deno.writeFileSync(filePath, new Uint8Array());
}
}
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