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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// Copyright Joyent, Inc. and Node.js contributors. All rights reserved. MIT license.
// TODO(petamoriken): enable prefer-primordials for node polyfills
// deno-lint-ignore-file prefer-primordials
import { Buffer } from "node:buffer";
import { validateBufferArray } from "ext:deno_node/internal/fs/utils.mjs";
import { getValidatedFd } from "ext:deno_node/internal/fs/utils.mjs";
import { maybeCallback } from "ext:deno_node/_fs/_fs_common.ts";
import * as io from "ext:deno_io/12_io.js";
import { op_fs_seek_async, op_fs_seek_sync } from "ext:core/ops";
export function writev(fd, buffers, position, callback) {
const innerWritev = async (fd, buffers, position) => {
const chunks = [];
const offset = 0;
for (let i = 0; i < buffers.length; i++) {
if (Buffer.isBuffer(buffers[i])) {
chunks.push(buffers[i]);
} else {
chunks.push(Buffer.from(buffers[i]));
}
}
if (typeof position === "number") {
await op_fs_seek_async(fd, position, io.SeekMode.Start);
}
const buffer = Buffer.concat(chunks);
let currentOffset = 0;
while (currentOffset < buffer.byteLength) {
currentOffset += await io.writeSync(fd, buffer.subarray(currentOffset));
}
return currentOffset - offset;
};
fd = getValidatedFd(fd);
validateBufferArray(buffers);
callback = maybeCallback(callback || position);
if (buffers.length === 0) {
process.nextTick(callback, null, 0, buffers);
return;
}
if (typeof position !== "number") position = null;
innerWritev(fd, buffers, position).then(
(nwritten) => {
callback(null, nwritten, buffers);
},
(err) => callback(err),
);
}
export function writevSync(fd, buffers, position) {
const innerWritev = (fd, buffers, position) => {
const chunks = [];
const offset = 0;
for (let i = 0; i < buffers.length; i++) {
if (Buffer.isBuffer(buffers[i])) {
chunks.push(buffers[i]);
} else {
chunks.push(Buffer.from(buffers[i]));
}
}
if (typeof position === "number") {
op_fs_seek_sync(fd, position, io.SeekMode.Start);
}
const buffer = Buffer.concat(chunks);
let currentOffset = 0;
while (currentOffset < buffer.byteLength) {
currentOffset += io.writeSync(fd, buffer.subarray(currentOffset));
}
return currentOffset - offset;
};
fd = getValidatedFd(fd);
validateBufferArray(buffers);
if (buffers.length === 0) {
return 0;
}
if (typeof position !== "number") position = null;
return innerWritev(fd, buffers, position);
}
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