@earendil-works/pi-coding-agent/dist/modes/interactive/external-editor.js

Coding agent CLI with read, bash, edit, write tools and session management

import { spawn } from "node:child_process";
import { mkdtempSync, readFileSync, rmSync, writeFileSync } from "node:fs";
import { tmpdir } from "node:os";
import { join } from "node:path";
import { stripBom } from "../../utils/text.js";
export async function editInExternalEditor(options) {
    const directory = mkdtempSync(join(tmpdir(), "pi-editor-"));
    const filePath = join(directory, "prompt.md");
    try {
        writeFileSync(filePath, options.content, "utf-8");
        const [editor, ...editorArgs] = options.command.split(" ");
        process.stdout.write(`Launching external editor: ${options.command}\nPi will resume when the editor exits.\n`);
        // Do not use spawnSync here. On Windows, synchronous child_process calls can keep
        // Node/libuv's console input read active after the parent pauses stdin, racing
        // vim/nvim for the console input buffer until Ctrl+C cancels the pending read.
        // Null means the editor could not be launched.
        const exit = await new Promise((resolve) => {
            // The editor inherits pi's cwd so project-relative paths, integrated terminals,
            // and similar editor features keep working. A long cwd can break Windows editors:
            // Windows rejects working directories over MAX_PATH, and WSL launches Windows
            // editors (code, notepad.exe) from the cwd's \\wsl.localhost\... path (#11592).
            // The cwd is intentionally not changed; failures are reported to the user instead.
            const child = spawn(editor, [...editorArgs, filePath], {
                stdio: "inherit",
                shell: process.platform === "win32",
            });
            child.on("error", () => resolve(null));
            child.on("close", (code, signal) => resolve(code ?? signal));
        });
        if (exit === null) {
            return { status: "failed", message: `Failed to launch external editor: ${options.command}` };
        }
        if (exit !== 0) {
            return {
                status: "failed",
                message: `External editor exited with ${typeof exit === "number" ? `code ${exit}` : exit}; prompt unchanged`,
            };
        }
        return { status: "complete", content: stripBom(readFileSync(filePath, "utf-8")).replace(/\n$/, "") };
    }
    finally {
        try {
            rmSync(directory, { recursive: true, force: true });
        }
        catch {
            // Cleanup is best effort.
        }
    }
}
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