@oazmi/build-tools
Version:
general deno build tool scripts which I practically use in all of my typescript repos
68 lines (67 loc) • 1.85 kB
JavaScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.
import { concat } from "../../bytes/0.223.0/concat.js";
import { DEFAULT_CHUNK_SIZE } from "./_constants.js";
/**
* Read {@linkcode Reader} `r` until EOF (`null`) and resolve to the content as
* {@linkcode Uint8Array}.
*
* @example
* ```ts
* import { readAll } from "@std/io/read-all";
*
* // Example from stdin
* const stdinContent = await readAll(Deno.stdin);
*
* // Example from file
* using file = await Deno.open("my_file.txt", {read: true});
* const myFileContent = await readAll(file);
* ```
*/
export async function readAll(reader) {
const chunks = [];
while (true) {
let chunk = new Uint8Array(DEFAULT_CHUNK_SIZE);
const n = await reader.read(chunk);
if (n === null) {
break;
}
if (n < DEFAULT_CHUNK_SIZE) {
chunk = chunk.subarray(0, n);
}
chunks.push(chunk);
}
return concat(chunks);
}
/**
* Synchronously reads {@linkcode ReaderSync} `r` until EOF (`null`) and returns
* the content as {@linkcode Uint8Array}.
*
* @example
* ```ts
* import { readAllSync } from "@std/io/read-all";
*
* // Example from stdin
* const stdinContent = readAllSync(Deno.stdin);
*
* // Example from file
* using file = Deno.openSync("my_file.txt", {read: true});
* const myFileContent = readAllSync(file);
* ```
*/
export function readAllSync(reader) {
const chunks = [];
while (true) {
const chunk = new Uint8Array(DEFAULT_CHUNK_SIZE);
const n = reader.readSync(chunk);
if (n === null) {
break;
}
if (n < DEFAULT_CHUNK_SIZE) {
chunks.push(chunk.subarray(0, n));
break;
}
chunks.push(chunk);
}
return concat(chunks);
}