Files
nanobot/nanobot/cli/entry.py
T

93 lines
3.0 KiB
Python

"""Low-overhead console entrypoint for the native terminal client."""
from __future__ import annotations
import os
import sys
from contextlib import suppress
from nanobot.cli.process_identity import set_cli_process_identity
_ROOT_OPTIONS = frozenset(
{
"-h",
"--help",
"-v",
"--version",
"--install-completion",
"--show-completion",
}
)
def _agent_invocation_args(args: list[str]) -> list[str] | None:
"""Return agent arguments when the root command should act as ``agent``."""
if not args:
return []
if args[0] == "agent":
return args[1:]
if args[0].startswith("-") and args[0].split("=", 1)[0] not in _ROOT_OPTIONS:
return args
return None
def _native_tui_candidate(args: list[str]) -> bool:
"""Return whether ``agent`` can start without the classic agent stack."""
if not args or args[0] != "agent":
return False
for argument in args[1:]:
if argument in {"--classic", "--no-tui", "-m", "--message"}:
return False
if argument.startswith("--message=") or (
argument.startswith("-m") and not argument.startswith("--")
):
return False
return True
def _configure_windows_console() -> None:
if sys.platform != "win32" or sys.stdout.encoding == "utf-8":
return
os.environ["PYTHONIOENCODING"] = "utf-8"
with suppress(Exception):
for stream in (sys.stdout, sys.stderr):
reconfigure = getattr(stream, "reconfigure", None)
if callable(reconfigure):
reconfigure(encoding="utf-8", errors="replace")
def _run_agent(args: list[str], *, prog_name: str) -> None:
"""Run the shared agent command without importing the complete CLI graph."""
import typer
from nanobot.cli.agent import agent
agent_app = typer.Typer(add_completion=False)
agent_app.command()(agent)
command = typer.main.get_command(agent_app)
command.main(args=args, prog_name=prog_name)
def main() -> None:
"""Dispatch native TUI startup without importing the complete CLI graph."""
raw_args = sys.argv[1:]
# Installed completion scripts call ``nanobot`` without positional arguments
# and pass the request through this environment variable. Keep those requests
# on the root command so subcommands remain discoverable.
shell_completion = bool(os.environ.get("_NANOBOT_COMPLETE"))
agent_args = None if shell_completion else _agent_invocation_args(raw_args)
dispatch_args = ["agent", *agent_args] if agent_args is not None else raw_args
set_cli_process_identity(dispatch_args)
_configure_windows_console()
root_agent_alias = agent_args is not None and raw_args[:1] != ["agent"]
if agent_args is not None and (
root_agent_alias or _native_tui_candidate(dispatch_args)
):
prog_name = "nanobot" if root_agent_alias else "nanobot agent"
_run_agent(agent_args, prog_name=prog_name)
return
from nanobot.cli.commands import app
app()