mirror of
https://github.com/denoland/deno.git
synced 2024-12-26 00:59:24 -05:00
d47147fb6a
This commit moves "deno_std/node" in "ext/node" crate. The code is transpiled and snapshotted during the build process. During the first pass a minimal amount of work was done to create the snapshot, a lot of code in "ext/node" depends on presence of "Deno" global. This code will be gradually fixed in the follow up PRs to migrate it to import relevant APIs from "internal:" modules. Currently the code from snapshot is not used in any way, and all Node/npm compatibility still uses code from "https://deno.land/std/node" (or from the location specified by "DENO_NODE_COMPAT_URL"). This will also be handled in a follow up PRs. --------- Co-authored-by: crowlkats <crowlkats@toaxl.com> Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com> Co-authored-by: Yoshiya Hinosawa <stibium121@gmail.com>
84 lines
2.1 KiB
TypeScript
84 lines
2.1 KiB
TypeScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
|
|
import randomBytes, {
|
|
MAX_SIZE as kMaxUint32,
|
|
} from "internal:deno_node/polyfills/internal/crypto/_randomBytes.ts";
|
|
import { Buffer } from "internal:deno_node/polyfills/buffer.ts";
|
|
|
|
const kBufferMaxLength = 0x7fffffff;
|
|
|
|
function assertOffset(offset: number, length: number) {
|
|
if (offset > kMaxUint32 || offset < 0) {
|
|
throw new TypeError("offset must be a uint32");
|
|
}
|
|
|
|
if (offset > kBufferMaxLength || offset > length) {
|
|
throw new RangeError("offset out of range");
|
|
}
|
|
}
|
|
|
|
function assertSize(size: number, offset: number, length: number) {
|
|
if (size > kMaxUint32 || size < 0) {
|
|
throw new TypeError("size must be a uint32");
|
|
}
|
|
|
|
if (size + offset > length || size > kBufferMaxLength) {
|
|
throw new RangeError("buffer too small");
|
|
}
|
|
}
|
|
|
|
export default function randomFill(
|
|
buf: Buffer,
|
|
cb: (err: Error | null, buf: Buffer) => void,
|
|
): void;
|
|
|
|
export default function randomFill(
|
|
buf: Buffer,
|
|
offset: number,
|
|
cb: (err: Error | null, buf: Buffer) => void,
|
|
): void;
|
|
|
|
export default function randomFill(
|
|
buf: Buffer,
|
|
offset: number,
|
|
size: number,
|
|
cb: (err: Error | null, buf: Buffer) => void,
|
|
): void;
|
|
|
|
export default function randomFill(
|
|
buf: Buffer,
|
|
offset?: number | ((err: Error | null, buf: Buffer) => void),
|
|
size?: number | ((err: Error | null, buf: Buffer) => void),
|
|
cb?: (err: Error | null, buf: Buffer) => void,
|
|
) {
|
|
if (typeof offset === "function") {
|
|
cb = offset;
|
|
offset = 0;
|
|
size = buf.length;
|
|
} else if (typeof size === "function") {
|
|
cb = size;
|
|
size = buf.length - Number(offset as number);
|
|
}
|
|
|
|
assertOffset(offset as number, buf.length);
|
|
assertSize(size as number, offset as number, buf.length);
|
|
|
|
randomBytes(size as number, (err, bytes) => {
|
|
if (err) return cb!(err, buf);
|
|
bytes?.copy(buf, offset as number);
|
|
cb!(null, buf);
|
|
});
|
|
}
|
|
|
|
export function randomFillSync(buf: Buffer, offset = 0, size?: number) {
|
|
assertOffset(offset, buf.length);
|
|
|
|
if (size === undefined) size = buf.length - offset;
|
|
|
|
assertSize(size, offset, buf.length);
|
|
|
|
const bytes = randomBytes(size);
|
|
|
|
bytes.copy(buf, offset);
|
|
|
|
return buf;
|
|
}
|