Files
hermes-agent/tools/open_preview_tool.py
Teknium d4cec15b47 refactor(tools): first-wave simplification of tools/ (file ops split, lazy_deps, code_exec, approval, browser, delegate, mcp, skills, terminal, voice, media)
Behavior-neutral structural pass over tools/*: god-file extractions into
sibling modules (file_operations_common/lint/search, file_tools_paths/
read_tracking/write, code_execution_env/rpc, tool_search_catalog/names/
validation, tts_command_provider, ...), duplicate helper unification,
if/elif -> dispatch tables, dead-code removal, docstring compaction.
Tool schemas (get_tool_definitions) verified byte-identical to base.
2026-09-02 14:43:45 -07:00

49 lines
1.9 KiB
Python

#!/usr/bin/env python3
"""Open a URL, dev server, or file in the Hermes desktop GUI's preview pane.
Registration moved into the `desktop_preview` tool; this module keeps the normalizer +
open action for ``tools.preview_tool``. Emits ``preview.open`` via ``desktop_ui``: the
renderer opens the pane for the window that asked and never steals focus for a
background session. The desktop_ui toolset reaches desktop clients on any backend.
"""
import re
from tools import desktop_ui
from tools.registry import tool_error
def _normalize_target(raw: str) -> str:
"""Coax a bare host/domain into a fetchable URL; leave paths + schemes alone.
``www.cnn.com`` -> ``https://www.cnn.com``; ``localhost:3000`` -> ``http://localhost:3000``.
File paths and explicit schemes pass through for the renderer's preview normalizer.
"""
v = raw.strip().strip("`").strip()
if not v or "://" in v or v.startswith(("/", "./", "../", "~", "file:")):
return v
if re.match(r"^(localhost|127\.0\.0\.1|0\.0\.0\.0|\[::1\])(:\d+)?(/|$)", v, re.I):
return "http://" + v
if re.match(r"^[\w.-]+\.[a-z]{2,}(:\d+)?(/.*)?$", v, re.I):
return "https://" + v
return v
def open_preview_tool(url: str, label: str = "") -> str:
"""Ask the desktop GUI to show ``url`` in the preview pane beside the chat."""
target = _normalize_target(url or "")
if not target:
return tool_error(
"url is required — a web URL (https://…), a localhost dev server, or a "
"file path to show in the preview pane."
)
label = (label or "").strip()
return desktop_ui.emit_or_error(
"preview.open",
{"url": target, "label": label},
"Failed to open the preview pane: ",
"The preview pane is only available in the Hermes desktop app.",
{"success": True, "url": target, "label": label},
)