stdio.ts•951 B
import { JSONRPCMessage, JSONRPCMessageSchema } from "../types.js";
/**
* Buffers a continuous stdio stream into discrete JSON-RPC messages.
*/
export class ReadBuffer {
private _buffer?: Buffer;
append(chunk: Buffer): void {
this._buffer = this._buffer ? Buffer.concat([this._buffer, chunk]) : chunk;
}
readMessage(): JSONRPCMessage | null {
if (!this._buffer) {
return null;
}
const index = this._buffer.indexOf("\n");
if (index === -1) {
return null;
}
const line = this._buffer.toString("utf8", 0, index);
this._buffer = this._buffer.subarray(index + 1);
return deserializeMessage(line);
}
clear(): void {
this._buffer = undefined;
}
}
export function deserializeMessage(line: string): JSONRPCMessage {
return JSONRPCMessageSchema.parse(JSON.parse(line));
}
export function serializeMessage(message: JSONRPCMessage): string {
return JSON.stringify(message) + "\n";
}