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3.0 kB · 94 lines
TypeScript
at main
1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465666768697071727374757677787980818283848586878889909192939495/** * Inline Bash Extension - expands inline bash commands in user prompts. * * Start pi with this extension: * pi -e ./examples/extensions/inline-bash.ts * * Then type prompts with inline bash: * What's in !{pwd}? * The current branch is !{git branch --show-current} and status: !{git status --short} * My node version is !{node --version} * * The !{command} patterns are executed and replaced with their output before * the prompt is sent to the agent. * * Note: Regular !command syntax (whole-line bash) is preserved and works as before. */import type { ExtensionAPI } from "@earendil-works/pi-coding-agent";
export default function (pi: ExtensionAPI) { const PATTERN = /!\{([^}]+)\}/g; const TIMEOUT_MS = 30000;
pi.on("input", async (event, ctx) => { const text = event.text;
// Don't process if it's a whole-line bash command (starts with !) // This preserves the existing !command behavior if (text.trimStart().startsWith("!") && !text.trimStart().startsWith("!{")) { return { action: "continue" }; }
// Check if there are any inline bash patterns if (!PATTERN.test(text)) { return { action: "continue" }; }
// Reset regex state after test() PATTERN.lastIndex = 0;
let result = text; const expansions: Array<{ command: string; output: string; error?: string }> = [];
// Find all matches first (to avoid issues with replacing while iterating) const matches: Array<{ full: string; command: string }> = []; let match = PATTERN.exec(text); while (match) { matches.push({ full: match[0], command: match[1] }); match = PATTERN.exec(text); }
// Execute each command and collect results for (const { full, command } of matches) { try { const bashResult = await pi.exec("bash", ["-c", command], { timeout: TIMEOUT_MS, });
const output = bashResult.stdout || bashResult.stderr || ""; const trimmed = output.trim();
if (bashResult.code !== 0 && bashResult.stderr) { expansions.push({ command, output: trimmed, error: `exit code ${bashResult.code}`, }); } else { expansions.push({ command, output: trimmed }); }
result = result.replace(full, trimmed); } catch (err) { const errorMsg = err instanceof Error ? err.message : String(err); expansions.push({ command, output: "", error: errorMsg }); result = result.replace(full, `[error: ${errorMsg}]`); } }
// Show what was expanded (if UI available) if (ctx.hasUI && expansions.length > 0) { const summary = expansions .map((e) => { const status = e.error ? ` (${e.error})` : ""; const preview = e.output.length > 50 ? `${e.output.slice(0, 50)}...` : e.output; return `!{${e.command}}${status} -> "${preview}"`; }) .join("\n");
ctx.ui.notify(`Expanded ${expansions.length} inline command(s):\n${summary}`, "info"); }
return { action: "transform", text: result, images: event.images }; });}