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import { toText } from "../deps.ts";import { decode } from "./helper.ts";
export async function readText(): Promise<string> {  const cmd = new Deno.Command("xclip", {    args: ["-selection", "clipboard", "-o"],    stdin: "null",    stdout: "piped",    stderr: "piped",  });  const { success, code, stdout, stderr } = await cmd.output();  if (!success) {    const cause = decode(stderr);    throw new Error(      `cannot read text: exit code: ${code}, error: ${cause}`,    );  }  return decode(stdout);}
export async function writeText(text: string): Promise<void> {  const cmd = new Deno.Command("xclip", {    args: ["-selection", "clipboard"],    stdin: "piped",    stderr: "piped",    stdout: "null",  });  const child = cmd.spawn();
  const r = new Blob([text]).stream();  await r.pipeTo(child.stdin);
  // It seems we must not wait `stderr` unless there are actual errors.  // Thus we cannot use `await child.output()` here.  const { success, code } = await child.status;  if (!success) {    const cause = await toText(child.stderr);    throw new Error(      `cannot write text: exit code: ${code}, error: ${cause}`,    );  }  await child.stderr.cancel();}
export async function readImage(): Promise<Uint8Array> {  const cmd = new Deno.Command("xclip", {    args: ["-selection", "clipboard", "-t", "image/png", "-o"],    stdin: "null",    stdout: "piped",    stderr: "piped",  });  const { success, code, stdout, stderr } = await cmd.output();  if (!success) {    const cause = decode(stderr);    throw new Error(      `cannot read image: exit code: ${code}, error: ${cause}`,    );  }  return stdout;}
export async function writeImage(data: Uint8Array): Promise<void> {  const cmd = new Deno.Command("xclip", {    args: ["-selection", "clipboard", "-t", "image/png"],    stdin: "piped",    stderr: "piped",    stdout: "null",  });  const child = cmd.spawn();
  const r = new Blob([data]).stream();  await r.pipeTo(child.stdin);
  // It seems we must not wait `stderr` unless there are actual errors.  // Thus we cannot use `await child.output()` here.  const { success, code } = await child.status;  if (!success) {    const cause = await toText(child.stderr);    throw new Error(      `cannot write image: exit code: ${code}, error: ${cause}`,    );  }  await child.stderr.cancel();}