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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { sendSync, sendAsync, msg, flatbuffers } from "./dispatch_flatbuffers";
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 {
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 sendAsync(...req(name, len));
}
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