javascript - 如何在 Deno 中将大量数据传递给 process.stdin.write？

Question

将大量数据传递给 stdin 将失败。如果您在 unix 下运行此脚本，您将在终端中仅获得网站输出的一部分:

const cat = Deno.run({
    cmd: ["cat"],
    stdin: "piped"
});
await cat.stdin.write(new Uint8Array(
    await (
            await fetch("https://languagelog.ldc.upenn.edu/nll/?feed=atom")
    ).arrayBuffer()
));
cat.stdin.close();
await cat.status();

sample feed以 </feed> 结尾，但管道会在中间吞下:

有没有办法绕过这个问题，或者我是否发现了一个错误？

Answer 1

无外乎 Ryan Dahl himself answered me :

stdin.write is just one syscall, it returns the number of bytes written. If you use writeAll, I think it would work.

That said, ideally you'd stream large data, rather than buffer it up.

import { readerFromStreamReader } from "https://deno.land/std@0.100.0/io/streams.ts";

const cat = Deno.run({
  cmd: ["cat"],
  stdin: "piped",
});
const res = await fetch("https://languagelog.ldc.upenn.edu/nll/?feed=atom");
let r = readerFromStreamReader(res.body.getReader());
await Deno.copy(r, cat.stdin);
cat.stdin.close();
await cat.status();