WP Navigator MCP

import type { WPConfig } from './config.js'; /** * Clamp a text payload to maxResponseKb from config toggles. * Appends a truncation message when clamped. */ export function clampText(text: string, config: WPConfig): string { const maxBytes = Math.max(1, config.toggles.maxResponseKb) * 1024; const bytes = byteLength(text); if (bytes <= maxBytes) return text; // Trim to ~maxBytes - 512 for headroom, then adjust down to boundary let limit = Math.max(0, maxBytes - 512); let out = safeSliceByBytes(text, limit); const note = `\n\n[Output truncated at ${config.toggles.maxResponseKb}KB. Set WPNAV_MAX_RESPONSE_KB to adjust or refine your query.]`; // Ensure note fits const noteBytes = byteLength(note); if (byteLength(out) + noteBytes > maxBytes) { out = safeSliceByBytes(out, maxBytes - noteBytes); } return out + note; } function byteLength(s: string): number { return Buffer.byteLength(s, 'utf8'); } function safeSliceByBytes(s: string, maxBytes: number): string { if (maxBytes <= 0) return ''; let bytes = 0; let i = 0; while (i < s.length) { const code = s.codePointAt(i)!; const encLen = code <= 0x7f ? 1 : code <= 0x7ff ? 2 : code <= 0xffff ? 3 : 4; if (bytes + encLen > maxBytes) break; bytes += encLen; i += code > 0xffff ? 2 : 1; } return s.slice(0, i); }