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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
import { Buffer, Reader } from "deno";
// `off` is the offset into `dst` where it will at which to begin writing values
// from `src`.
// Returns the number of bytes copied.
export function copyBytes(dst: Uint8Array, src: Uint8Array, off = 0): number {
off = Math.max(0, Math.min(off, dst.byteLength));
const r = dst.byteLength - off;
if (src.byteLength > r) {
src = src.subarray(0, r);
}
dst.set(src, off);
return src.byteLength;
}
export function charCode(s: string): number {
return s.charCodeAt(0);
}
const encoder = new TextEncoder();
export function stringsReader(s: string): Reader {
const ui8 = encoder.encode(s);
return new Buffer(ui8.buffer as ArrayBuffer);
}
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