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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
import { sendAsyncMinimal, sendSyncMinimal } from "./dispatch_minimal.ts";
export function readSync(rid: number, buffer: Uint8Array): number | null {
if (buffer.length === 0) {
return 0;
}
const nread = sendSyncMinimal("op_read", rid, buffer);
if (nread < 0) {
throw new Error("read error");
}
return nread === 0 ? null : nread;
}
export async function read(
rid: number,
buffer: Uint8Array
): Promise<number | null> {
if (buffer.length === 0) {
return 0;
}
const nread = await sendAsyncMinimal("op_read", rid, buffer);
if (nread < 0) {
throw new Error("read error");
}
return nread === 0 ? null : nread;
}
export function writeSync(rid: number, data: Uint8Array): number {
const result = sendSyncMinimal("op_write", rid, data);
if (result < 0) {
throw new Error("write error");
}
return result;
}
export async function write(rid: number, data: Uint8Array): Promise<number> {
const result = await sendAsyncMinimal("op_write", rid, data);
if (result < 0) {
throw new Error("write error");
}
return result;
}
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