546 lines
18 KiB
Python
546 lines
18 KiB
Python
#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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"""
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Codex Session Start Hook - Inject Trellis context into Codex sessions.
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Output format follows Codex hook protocol:
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stdout JSON → { hookSpecificOutput: { hookEventName: "SessionStart", additionalContext: "..." } }
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"""
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from __future__ import annotations
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import json
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import os
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import re
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import subprocess
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import sys
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import warnings
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from io import StringIO
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from pathlib import Path
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# Force UTF-8 on stdin/stdout/stderr on Windows. Default codepage there is
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# cp936 / cp1252 / etc. — non-ASCII content (Chinese task names, prd snippets)
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# both in stdin (hook payload from host CLI) and stdout (our emitted blocks)
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# raises UnicodeDecodeError / UnicodeEncodeError. Equivalent to `python -X utf8`
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# but applied per-stream so we don't depend on host CLI's command wiring.
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if sys.platform.startswith("win"):
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import io as _io
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for _stream_name in ("stdin", "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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if hasattr(_stream, "reconfigure"):
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try:
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_stream.reconfigure(encoding="utf-8", errors="replace") # type: ignore[union-attr]
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except Exception:
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pass
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elif hasattr(_stream, "detach"):
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try:
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setattr(sys, _stream_name, _io.TextIOWrapper(_stream.detach(), encoding="utf-8", errors="replace"))
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except Exception:
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pass
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def _normalize_windows_shell_path(path_str: str) -> str:
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"""Normalize Unix-style shell paths to real Windows paths.
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On Windows, shells like Git Bash / MSYS2 / Cygwin may report paths like
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`/d/Users/...` or `/cygdrive/d/Users/...`. `Path.resolve()` will misinterpret
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these as `D:/d/Users...` on drive D: (or similar), breaking repo root
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detection.
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This function is intentionally conservative: it only rewrites patterns that
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unambiguously represent a drive letter mount.
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"""
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if not isinstance(path_str, str) or not path_str:
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return path_str
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# Only relevant on Windows; keep other platforms untouched.
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if not sys.platform.startswith("win"):
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return path_str
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p = path_str.strip()
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# Already a Windows drive path (C:\... or C:/...)
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if re.match(r"^[A-Za-z]:[\/]", p):
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return p
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# MSYS/Git-Bash style: /c/Users/... or /d/Work/...
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m = re.match(r"^/([A-Za-z])/(.*)", p)
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if m:
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drive, rest = m.group(1).upper(), m.group(2)
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rest = rest.replace('/', '\\')
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return f"{drive}:\\{rest}"
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# Cygwin style: /cygdrive/c/Users/...
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m = re.match(r"^/cygdrive/([A-Za-z])/(.*)", p)
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if m:
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drive, rest = m.group(1).upper(), m.group(2)
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rest = rest.replace('/', '\\')
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return f"{drive}:\\{rest}"
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# WSL mounted drive (sometimes leaked into env): /mnt/c/Users/...
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m = re.match(r"^/mnt/([A-Za-z])/(.*)", p)
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if m:
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drive, rest = m.group(1).upper(), m.group(2)
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rest = rest.replace('/', '\\')
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return f"{drive}:\\{rest}"
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return path_str
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warnings.filterwarnings("ignore")
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FIRST_REPLY_NOTICE = """<first-reply-notice>
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On the first visible assistant reply in this session, begin with exactly one short Chinese sentence:
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Trellis SessionStart 已注入：workflow、当前任务状态、开发者身份、git 状态、active tasks、spec 索引已加载。
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Then continue directly with the user's request. This notice is one-shot: do not repeat it after the first assistant reply in the same session.
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</first-reply-notice>"""
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def should_skip_injection() -> bool:
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if os.environ.get("TRELLIS_HOOKS") == "0":
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return True
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if os.environ.get("TRELLIS_DISABLE_HOOKS") == "1":
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return True
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return os.environ.get("CODEX_NON_INTERACTIVE") == "1"
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def configure_project_encoding(project_dir: Path) -> None:
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"""Reuse Trellis' shared Windows stdio encoding helper before JSON output."""
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scripts_dir = project_dir / ".trellis" / "scripts"
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if str(scripts_dir) not in sys.path:
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sys.path.insert(0, str(scripts_dir))
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try:
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from common import configure_encoding # type: ignore[import-not-found]
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configure_encoding()
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except Exception:
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pass
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def _has_curated_jsonl_entry(jsonl_path: Path) -> bool:
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"""Return True iff jsonl has at least one row with a ``file`` field.
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A freshly seeded jsonl only contains a ``{"_example": ...}`` row (no
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``file`` key) — that is NOT "ready". Readiness requires at least one
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curated entry. Matches the contract used by ``inject-subagent-context.py``.
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"""
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try:
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for line in jsonl_path.read_text(encoding="utf-8").splitlines():
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line = line.strip()
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if not line:
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continue
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try:
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row = json.loads(line)
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except json.JSONDecodeError:
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continue
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if isinstance(row, dict) and row.get("file"):
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return True
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except (OSError, UnicodeDecodeError):
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return False
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return False
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def read_file(path: Path, fallback: str = "") -> str:
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try:
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return path.read_text(encoding="utf-8")
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except (FileNotFoundError, PermissionError):
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return fallback
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def _resolve_context_key(project_dir: Path, hook_input: dict) -> str | None:
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scripts_dir = project_dir / ".trellis" / "scripts"
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if str(scripts_dir) not in sys.path:
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sys.path.insert(0, str(scripts_dir))
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try:
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from common.active_task import resolve_context_key # type: ignore[import-not-found]
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except Exception:
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return None
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return resolve_context_key(hook_input, platform="codex")
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def _resolve_active_task(trellis_dir: Path, hook_input: dict):
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scripts_dir = trellis_dir / "scripts"
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if str(scripts_dir) not in sys.path:
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sys.path.insert(0, str(scripts_dir))
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from common.active_task import resolve_active_task # type: ignore[import-not-found]
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return resolve_active_task(trellis_dir.parent, hook_input, platform="codex")
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def run_script(script_path: Path, context_key: str | None = None) -> str:
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try:
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env = os.environ.copy()
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env["PYTHONIOENCODING"] = "utf-8"
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if context_key:
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env["TRELLIS_CONTEXT_ID"] = context_key
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cmd = [sys.executable, "-W", "ignore", str(script_path)]
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result = subprocess.run(
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cmd,
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capture_output=True,
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text=True,
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encoding="utf-8",
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errors="replace",
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timeout=5,
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cwd=str(script_path.parent.parent.parent),
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env=env,
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)
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return result.stdout if result.returncode == 0 else "No context available"
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except (subprocess.TimeoutExpired, FileNotFoundError, PermissionError):
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return "No context available"
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def _normalize_task_ref(task_ref: str) -> str:
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normalized = task_ref.strip()
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if not normalized:
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return ""
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path_obj = Path(normalized)
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if path_obj.is_absolute():
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return str(path_obj)
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normalized = normalized.replace("\\", "/")
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while normalized.startswith("./"):
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normalized = normalized[2:]
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if normalized.startswith("tasks/"):
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return f".trellis/{normalized}"
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return normalized
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def _resolve_task_dir(trellis_dir: Path, task_ref: str) -> Path:
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normalized = _normalize_task_ref(task_ref)
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path_obj = Path(normalized)
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if path_obj.is_absolute():
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return path_obj
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if normalized.startswith(".trellis/"):
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return trellis_dir.parent / path_obj
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return trellis_dir / "tasks" / path_obj
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def _get_task_status(trellis_dir: Path, hook_input: dict) -> str:
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active = _resolve_active_task(trellis_dir, hook_input)
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if not active.task_path:
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return (
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"Status: NO ACTIVE TASK\n"
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"Next: Classify the current turn and ask for task-creation consent "
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"before creating any Trellis task."
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)
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task_ref = active.task_path
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task_dir = _resolve_task_dir(trellis_dir, task_ref)
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if active.stale or not task_dir.is_dir():
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return (
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f"Status: STALE POINTER\nTask: {task_ref}\n"
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"Next: Task directory not found. Run: python3 ./.trellis/scripts/task.py finish"
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)
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task_json_path = task_dir / "task.json"
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task_data: dict = {}
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if task_json_path.is_file():
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try:
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task_data = json.loads(task_json_path.read_text(encoding="utf-8"))
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except (json.JSONDecodeError, PermissionError):
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pass
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task_title = task_data.get("title", task_ref)
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task_status = task_data.get("status", "unknown")
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if task_status == "completed":
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return (
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f"Status: COMPLETED\nTask: {task_title}\n"
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f"Next: Archive with `python3 ./.trellis/scripts/task.py archive {task_dir.name}` "
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"or start a new task."
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)
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has_prd = (task_dir / "prd.md").is_file()
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has_design = (task_dir / "design.md").is_file()
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has_implement = (task_dir / "implement.md").is_file()
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present = [
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name
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for name in ("prd.md", "design.md", "implement.md", "implement.jsonl", "check.jsonl")
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if (task_dir / name).is_file()
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]
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present_line = ", ".join(present) if present else "none"
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if not has_prd:
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return (
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f"Status: PLANNING\nTask: {task_title}\nPresent: {present_line}\n"
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"Next: Load trellis-brainstorm and write prd.md. Stay in planning."
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)
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if task_status == "planning":
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if has_design and has_implement:
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next_action = "Review planning artifacts with the user before `task.py start`."
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else:
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next_action = (
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"Lightweight task can ask for start review with PRD-only; "
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"complex task must add design.md and implement.md before `task.py start`."
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)
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return (
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f"Status: PLANNING\nTask: {task_title}\nPresent: {present_line}\n"
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f"Next: {next_action}"
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)
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return (
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f"Status: {task_status.upper()}\nTask: {task_title}\nPresent: {present_line}\n"
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"Next: Follow the matching per-turn workflow-state. Context order is jsonl entries, "
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"prd.md, design.md if present, implement.md if present."
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)
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def _run_git(repo_root: Path, args: list[str]) -> str:
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try:
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result = subprocess.run(
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["git", *args],
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capture_output=True,
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text=True,
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encoding="utf-8",
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errors="replace",
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timeout=3,
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cwd=str(repo_root),
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)
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except (subprocess.TimeoutExpired, FileNotFoundError, PermissionError):
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return ""
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if result.returncode != 0:
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return ""
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return result.stdout.strip()
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def _format_git_state(repo_root: Path) -> str:
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branch = _run_git(repo_root, ["branch", "--show-current"]) or "(detached)"
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dirty_lines = [
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line for line in _run_git(repo_root, ["status", "--porcelain"]).splitlines()
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if line.strip()
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]
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dirty_text = "clean" if not dirty_lines else f"dirty {len(dirty_lines)} paths"
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return f"Git: branch {branch}; {dirty_text}."
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def _repo_relative(repo_root: Path, path: Path) -> str:
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try:
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return path.relative_to(repo_root).as_posix()
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except ValueError:
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return str(path)
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def _collect_spec_index_paths(trellis_dir: Path) -> list[str]:
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paths: list[str] = []
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guides_index = trellis_dir / "spec" / "guides" / "index.md"
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if guides_index.is_file():
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paths.append(".trellis/spec/guides/index.md")
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spec_dir = trellis_dir / "spec"
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if not spec_dir.is_dir():
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return paths
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for sub in sorted(spec_dir.iterdir()):
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if not sub.is_dir() or sub.name.startswith(".") or sub.name == "guides":
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continue
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index_file = sub / "index.md"
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if index_file.is_file():
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paths.append(f".trellis/spec/{sub.name}/index.md")
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continue
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for nested in sorted(sub.iterdir()):
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if not nested.is_dir():
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continue
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nested_index = nested / "index.md"
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if nested_index.is_file():
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paths.append(f".trellis/spec/{sub.name}/{nested.name}/index.md")
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return paths
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def _build_compact_current_state(
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trellis_dir: Path,
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hook_input: dict,
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spec_index_paths: list[str],
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) -> str:
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repo_root = trellis_dir.parent
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lines: list[str] = []
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try:
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from common.paths import get_active_journal_file, get_developer, get_tasks_dir, count_lines # type: ignore[import-not-found]
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from common.tasks import iter_active_tasks # type: ignore[import-not-found]
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except Exception:
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get_active_journal_file = None # type: ignore[assignment]
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get_developer = None # type: ignore[assignment]
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get_tasks_dir = None # type: ignore[assignment]
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count_lines = None # type: ignore[assignment]
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iter_active_tasks = None # type: ignore[assignment]
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developer = get_developer(repo_root) if get_developer else None
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lines.append(f"Developer: {developer or '(not initialized)'}")
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lines.append(_format_git_state(repo_root))
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active = _resolve_active_task(trellis_dir, hook_input)
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if active.task_path:
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task_dir = _resolve_task_dir(trellis_dir, active.task_path)
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status = "unknown"
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task_json = task_dir / "task.json"
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if task_json.is_file():
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try:
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data = json.loads(task_json.read_text(encoding="utf-8"))
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if isinstance(data, dict):
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status = str(data.get("status") or "unknown")
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except (json.JSONDecodeError, OSError):
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pass
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lines.append(f"Current task: {_repo_relative(repo_root, task_dir)}; status={status}.")
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else:
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lines.append("Current task: none.")
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if get_tasks_dir and iter_active_tasks:
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try:
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task_count = sum(1 for _ in iter_active_tasks(get_tasks_dir(repo_root)))
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lines.append(
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f"Active tasks: {task_count} total. Use `python3 ./.trellis/scripts/task.py list --mine` only if needed."
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)
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except Exception:
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pass
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if get_active_journal_file and count_lines:
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journal = get_active_journal_file(repo_root)
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if journal:
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lines.append(
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f"Journal: {_repo_relative(repo_root, journal)}, {count_lines(journal)} / 2000 lines."
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)
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if spec_index_paths:
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lines.append(f"Spec indexes: {len(spec_index_paths)} available.")
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return "\n".join(lines)
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def _extract_range(content: str, start_header: str, end_header: str) -> str:
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"""Extract lines starting at `## start_header` up to (but excluding) `## end_header`."""
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lines = content.splitlines()
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start: "int | None" = None
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end: int = len(lines)
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start_match = f"## {start_header}"
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end_match = f"## {end_header}"
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for i, line in enumerate(lines):
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stripped = line.strip()
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if start is None and stripped == start_match:
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start = i
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continue
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if start is not None and stripped == end_match:
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end = i
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break
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if start is None:
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return ""
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return "\n".join(lines[start:end]).rstrip()
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_BREADCRUMB_TAG_RE = re.compile(
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r"\[workflow-state:([A-Za-z0-9_-]+)\]\s*\n.*?\n\s*\[/workflow-state:\1\]",
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re.DOTALL,
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)
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def _strip_breadcrumb_tag_blocks(content: str) -> str:
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stripped = _BREADCRUMB_TAG_RE.sub("", content)
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stripped = re.sub(r"<!--.*?-->", "", stripped, flags=re.DOTALL)
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stripped = re.sub(r"^\[(?!/?workflow-state:)/?[^\]\n]+\]\s*\n?", "", stripped, flags=re.MULTILINE)
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return re.sub(r"\n{3,}", "\n\n", stripped).strip()
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def _build_workflow_toc(workflow_path: Path) -> str:
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"""Inject only the compact Phase Index summary for SessionStart."""
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content = read_file(workflow_path)
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if not content:
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return "No workflow.md found"
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out_lines = [
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"# Development Workflow - Session Summary",
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"Full guide: .trellis/workflow.md. Step detail: `python3 ./.trellis/scripts/get_context.py --mode phase --step <X.Y>`.",
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"",
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]
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phases = _extract_range(content, "Phase Index", "Phase 1: Plan")
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if phases:
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out_lines.append(_strip_breadcrumb_tag_blocks(phases).rstrip())
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return "\n".join(out_lines).rstrip()
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def main() -> None:
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if should_skip_injection():
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sys.exit(0)
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# Read hook input from stdin
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try:
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hook_input = json.loads(sys.stdin.read())
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if not isinstance(hook_input, dict):
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hook_input = {}
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project_dir = Path(_normalize_windows_shell_path(hook_input.get("cwd", "."))).resolve()
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except (json.JSONDecodeError, KeyError):
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hook_input = {}
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project_dir = Path(".").resolve()
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configure_project_encoding(project_dir)
|
||
|
||
trellis_dir = project_dir / ".trellis"
|
||
spec_index_paths = _collect_spec_index_paths(trellis_dir)
|
||
|
||
output = StringIO()
|
||
|
||
output.write("""<session-context>
|
||
Trellis compact SessionStart context. Use it to orient the session; load details on demand.
|
||
</session-context>
|
||
|
||
""")
|
||
output.write(FIRST_REPLY_NOTICE)
|
||
output.write("\n\n")
|
||
|
||
output.write("<current-state>\n")
|
||
output.write(_build_compact_current_state(trellis_dir, hook_input, spec_index_paths))
|
||
output.write("\n</current-state>\n\n")
|
||
|
||
output.write("<trellis-workflow>\n")
|
||
output.write(_build_workflow_toc(trellis_dir / "workflow.md"))
|
||
output.write("\n</trellis-workflow>\n\n")
|
||
|
||
output.write("<guidelines>\n")
|
||
output.write(
|
||
"Task context order for implementation/check: jsonl entries -> `prd.md` -> "
|
||
"`design.md if present` -> `implement.md if present`. Missing optional artifacts "
|
||
"are skipped for lightweight tasks.\n\n"
|
||
)
|
||
|
||
if spec_index_paths:
|
||
output.write("## Available indexes (read on demand)\n")
|
||
for p in spec_index_paths:
|
||
output.write(f"- {p}\n")
|
||
output.write("\n")
|
||
|
||
output.write(
|
||
"Discover more via: "
|
||
"`python3 ./.trellis/scripts/get_context.py --mode packages`\n"
|
||
)
|
||
output.write("</guidelines>\n\n")
|
||
|
||
task_status = _get_task_status(trellis_dir, hook_input)
|
||
output.write(f"<task-status>\n{task_status}\n</task-status>\n\n")
|
||
|
||
output.write("""<ready>
|
||
Context loaded. Follow <task-status>. Load workflow/spec/task details only when needed.
|
||
</ready>""")
|
||
|
||
context = output.getvalue()
|
||
result = {
|
||
"suppressOutput": True,
|
||
"systemMessage": f"Trellis context injected ({len(context)} chars)",
|
||
"hookSpecificOutput": {
|
||
"hookEventName": "SessionStart",
|
||
"additionalContext": context,
|
||
},
|
||
}
|
||
|
||
print(json.dumps(result, ensure_ascii=False), flush=True)
|
||
|
||
|
||
if __name__ == "__main__":
|
||
main()
|