88 lines
2.8 KiB
Python
88 lines
2.8 KiB
Python
#!/usr/bin/env python3
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"""Read the in-app terminal pane in the Hermes desktop GUI.
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The embedded terminal's buffer lives in the desktop renderer (xterm.js), so this
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tool round-trips through the gateway's blocking-prompt bridge — the same one
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`clarify` uses: tui_gateway emits ``terminal.read.request``, the renderer answers
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with ``terminal.read.respond``. This module is just schema + a thin dispatcher
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over the platform-injected callback.
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Lives in the ``desktop_ui`` toolset, which the GUI gateway enables only for
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desktop-sourced sessions.
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"""
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import json
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from typing import Callable, Optional
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from tools.registry import registry, tool_error
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def read_terminal_tool(
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start_line: Optional[int] = None,
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count: Optional[int] = None,
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callback: Optional[Callable] = None,
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) -> str:
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"""Return the in-app terminal's contents (+ line metadata) as a JSON string."""
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if callback is None:
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return tool_error("read_terminal is only available in the Hermes desktop app.")
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try:
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window = {
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key: max(floor, int(val))
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for key, val, floor in (("start", start_line, 0), ("count", count, 1))
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if val is not None
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}
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except (TypeError, ValueError):
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return tool_error("start_line and count must be integers.")
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try:
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raw = callback(**window)
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except Exception as exc:
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return tool_error(f"Failed to read terminal: {exc}")
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if not raw:
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return tool_error("No in-app terminal is open, or the read timed out.")
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# Desktop answers with a JSON object; pass it through, else wrap the raw text.
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try:
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return json.dumps(json.loads(raw), ensure_ascii=False)
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except (TypeError, ValueError):
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return json.dumps({"text": str(raw)}, ensure_ascii=False)
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READ_TERMINAL_SCHEMA = {
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"name": "read_terminal",
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"description": (
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"Read the in-app terminal pane beside this chat. No args = visible "
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"screen + total_lines; page scrollback with start_line (0 = oldest) "
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"+ count. JSON: {total_lines, start, end, viewport_rows, cursor_row, "
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"text}."
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),
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"parameters": {
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"type": "object",
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"properties": {
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"start_line": {
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"type": "integer",
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"description": "0-indexed first line (0 = oldest). Omit for the visible screen.",
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},
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"count": {
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"type": "integer",
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"description": "Lines to read from start_line. Defaults to the visible row count.",
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},
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},
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},
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}
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registry.register(
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name="read_terminal",
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toolset="desktop_ui",
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schema=READ_TERMINAL_SCHEMA,
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handler=lambda args, **kw: read_terminal_tool(
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start_line=args.get("start_line"),
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count=args.get("count"),
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callback=kw.get("callback"),
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),
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emoji="🖥️",
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)
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