mirror of
https://github.com/denoland/deno.git
synced 2024-12-22 15:24:46 -05:00
34 lines
1.1 KiB
TypeScript
34 lines
1.1 KiB
TypeScript
// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
|
|
import * as msg from "gen/cli/msg_generated";
|
|
import * as flatbuffers from "./flatbuffers";
|
|
import * as dispatch from "./dispatch";
|
|
|
|
function req(
|
|
name: string,
|
|
len?: number
|
|
): [flatbuffers.Builder, msg.Any, flatbuffers.Offset] {
|
|
const builder = flatbuffers.createBuilder();
|
|
const name_ = builder.createString(name);
|
|
len = len && len > 0 ? Math.floor(len) : 0;
|
|
const inner = msg.Truncate.createTruncate(builder, name_, len);
|
|
return [builder, msg.Any.Truncate, inner];
|
|
}
|
|
|
|
/** Truncates or extends the specified file synchronously, updating the size of
|
|
* this file to become size.
|
|
*
|
|
* Deno.truncateSync("hello.txt", 10);
|
|
*/
|
|
export function truncateSync(name: string, len?: number): void {
|
|
dispatch.sendSync(...req(name, len));
|
|
}
|
|
|
|
/**
|
|
* Truncates or extends the specified file, updating the size of this file to
|
|
* become size.
|
|
*
|
|
* await Deno.truncate("hello.txt", 10);
|
|
*/
|
|
export async function truncate(name: string, len?: number): Promise<void> {
|
|
await dispatch.sendAsync(...req(name, len));
|
|
}
|