42 lines
1.3 KiB
JavaScript
42 lines
1.3 KiB
JavaScript
import { readKey } from '../common/fns.ts';
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import { ITerminal, ITerminalSize } from '../common/types.ts';
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const DenoTerminalIO: ITerminal = {
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argv: Deno.args,
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inputLoop: async function* (): AsyncGenerator<Uint8Array, null> {
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yield (await DenoTerminalIO.readStdinRaw()) ?? new Uint8Array(0);
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return null;
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},
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getTerminalSize: function getSize(): Promise<ITerminalSize> {
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const size: { rows: number; columns: number } = Deno.consoleSize();
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return Promise.resolve({
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rows: size.rows,
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cols: size.columns,
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});
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},
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readStdin: async function (): Promise<string | null> {
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const raw = await DenoTerminalIO.readStdinRaw();
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return readKey(raw ?? new Uint8Array(0));
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},
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readStdinRaw: async function (): Promise<Uint8Array | null> {
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const reader = Deno.stdin.readable.getReader();
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const chunk = await reader.read();
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const res = chunk?.value;
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reader.releaseLock();
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return res ?? null;
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},
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writeStdout: async function (s: string): Promise<void> {
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const buffer: Uint8Array = new TextEncoder().encode(s);
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const stdout: WritableStream<Uint8Array> = Deno.stdout.writable;
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const writer: WritableStreamDefaultWriter<Uint8Array> = stdout.getWriter();
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await writer.ready;
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await writer.write(buffer);
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writer.releaseLock();
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},
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};
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export default DenoTerminalIO;
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