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93 lines
3.7 KiB
Python
93 lines
3.7 KiB
Python
"""
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Hermes CLI - Unified command-line interface for Hermes Agent.
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Provides subcommands for:
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- hermes chat - Interactive chat (same as ./hermes)
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- hermes gateway - Run gateway in foreground
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- hermes gateway start - Start gateway service
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- hermes gateway stop - Stop gateway service
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- hermes setup - Interactive setup wizard
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- hermes status - Show status of all components
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- hermes cron - Manage cron jobs
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"""
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import os
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import sys
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__version__ = "0.18.2"
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__release_date__ = "2026.7.7.2"
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def _ensure_utf8():
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"""Force UTF-8 stdout/stderr to prevent UnicodeEncodeError crashes.
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Several environments select a legacy, non-UTF-8 encoding for the standard
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streams:
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- Windows services and terminals default to cp1252.
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- Linux hosts with a latin-1 / C / POSIX locale (common on minimal Debian
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installs and Raspberry Pi) select latin-1 or ASCII.
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The CLI prints box-drawing characters (┌│├└─) and the ⚕ glyph in the setup
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wizard, doctor, and status banners. Encoding those under a non-UTF-8 codec
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raises an unhandled UnicodeEncodeError that crashes the command before it
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can even start — e.g. `hermes setup` on a fresh Pi.
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This runs at import time so it protects every CLI subcommand, on any
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platform. It re-wraps stdout/stderr as UTF-8 when their encoding is not
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already UTF-8, preferring TextIOWrapper.reconfigure() so the existing
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stream object is fixed in place (cached `sys.stdout` references keep
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working) and falling back to reopening the file descriptor with
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closefd=False (the CPython-recommended safe variant).
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No-op when the streams are already UTF-8: a healthy UTF-8 system sees no
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stream change and no environment mutation.
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Note: this is intentionally the earliest, platform-agnostic guard.
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hermes_cli/stdio.py::configure_windows_stdio() runs later from the entry
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points and layers on the Windows-only extras (console code-page flip,
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EDITOR default, PATH augmentation); its stream reconfiguration is a
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harmless idempotent no-op once we have already repaired the streams here.
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"""
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repaired = False
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for stream_name in ("stdout", "stderr"):
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stream = getattr(sys, stream_name, None)
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if stream is None:
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continue
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try:
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encoding = (getattr(stream, "encoding", "") or "").lower().replace("-", "")
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if encoding == "utf8":
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continue
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# Preferred: reconfigure the existing TextIOWrapper in place. This
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# preserves object identity so any code already holding a reference
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# to the old sys.stdout benefits from the repair too.
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reconfigure = getattr(stream, "reconfigure", None)
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if callable(reconfigure):
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reconfigure(encoding="utf-8", errors="replace")
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repaired = True
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continue
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# Fallback: reopen the underlying file descriptor as UTF-8. Used
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# for streams that don't expose reconfigure() (e.g. some wrapped
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# or replaced streams). closefd=False keeps the original fd open.
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new_stream = open(
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stream.fileno(), "w", encoding="utf-8",
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errors="replace", buffering=1, closefd=False,
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)
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setattr(sys, stream_name, new_stream)
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repaired = True
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except (AttributeError, OSError, ValueError):
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pass
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# Only nudge child processes toward UTF-8 when we actually detected a
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# non-UTF-8 locale. On a healthy UTF-8 host children inherit UTF-8 from the
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# locale already, so leave the environment untouched (minimal footprint).
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if repaired:
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os.environ.setdefault("PYTHONUTF8", "1")
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os.environ.setdefault("PYTHONIOENCODING", "utf-8")
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_ensure_utf8()
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