Teknium
84 lines
2.8 KiB
Python
84 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 buffer lives in the desktop renderer (xterm.js), so this round-trips through the
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gateway's blocking-prompt bridge (as `clarify` does): tui_gateway emits
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``terminal.read.request``, the renderer answers ``terminal.read.respond``. Lives in the
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``desktop_ui`` toolset, enabled only for desktop-sourced sessions.
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"""
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from typing import Callable, Optional
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from tools.desktop_ui import passthrough_json
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from tools.registry import registry, tool_error
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def read_pane(callback: Optional[Callable], window, errors: tuple) -> str:
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"""Shared body of the read_terminal / read_preview bridges.
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``window`` is ``((key, value, floor), ...)``; None values are omitted, others are
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int-coerced and floored. ``errors`` = (not_desktop, not_integers, fail_prefix, empty).
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"""
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if callback is None:
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return tool_error(errors[0])
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try:
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kwargs = {key: max(floor, int(val)) for key, val, floor in window if val is not None}
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except (TypeError, ValueError):
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return tool_error(errors[1])
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try:
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raw = callback(**kwargs)
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except Exception as exc:
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return tool_error(f"{errors[2]}{exc}")
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if not raw:
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return tool_error(errors[3])
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return passthrough_json(raw)
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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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return read_pane(callback, (("start", start_line, 0), ("count", count, 1)), (
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"read_terminal is only available in the Hermes desktop app.",
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"start_line and count must be integers.",
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"Failed to read terminal: ",
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"No in-app terminal is open, or the read timed out.",
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))
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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"), count=args.get("count"), callback=kw.get("callback")
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),
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emoji="🖥️",
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)
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