Files
mengyastore/.claude/hooks/statusline.py

325 lines
10 KiB
Python

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Trellis StatusLine — project-level status display for Claude Code.
Reads Claude Code session JSON from stdin + Trellis task data from filesystem.
Outputs 1-2 lines:
With active task: [P1] Task title (status) + info line
Without task: info line only
Info line: model · ctx% · branch · duration · developer · tasks · rate limits
When COLUMNS (injected by Claude Code v2.1.153+) is too narrow for the info
line, the rate-limit segments move to their own line via an explicit "\n".
"""
from __future__ import annotations
import json
import os
import re
import subprocess
import sys
import time
from datetime import datetime
from pathlib import Path
# Fix: Windows Python defaults to GBK encoding, which corrupts UTF-8
# characters like the middle dot (·). Wrap stdout/stderr with UTF-8.
if sys.platform == "win32":
for stream in (sys.stdout, sys.stderr):
reconfigure = getattr(stream, "reconfigure", None)
if callable(reconfigure):
reconfigure(encoding="utf-8", errors="replace")
def _read_text(path: Path) -> str:
try:
return path.read_text(encoding="utf-8").strip()
except (FileNotFoundError, PermissionError, OSError):
return ""
def _read_json(path: Path) -> dict:
text = _read_text(path)
if not text:
return {}
try:
return json.loads(text)
except (json.JSONDecodeError, ValueError):
return {}
def _normalize_task_ref(task_ref: str) -> str:
normalized = task_ref.strip()
if not normalized:
return ""
path_obj = Path(normalized)
if path_obj.is_absolute():
return str(path_obj)
normalized = normalized.replace("\\", "/")
while normalized.startswith("./"):
normalized = normalized[2:]
if normalized.startswith("tasks/"):
return f".trellis/{normalized}"
return normalized
def _resolve_task_dir(trellis_dir: Path, task_ref: str) -> Path:
normalized = _normalize_task_ref(task_ref)
path_obj = Path(normalized)
if path_obj.is_absolute():
return path_obj
if normalized.startswith(".trellis/"):
return trellis_dir.parent / path_obj
return trellis_dir / "tasks" / path_obj
def _find_trellis_dir() -> Path | None:
"""Walk up from cwd to find .trellis/ directory."""
current = Path.cwd()
for parent in [current, *current.parents]:
candidate = parent / ".trellis"
if candidate.is_dir():
return candidate
return None
def _get_current_task(trellis_dir: Path) -> dict | None:
"""Load current task info through Trellis' active task resolver."""
return _get_current_task_for_input(trellis_dir, {})
def _get_current_task_for_input(trellis_dir: Path, cc_data: dict) -> dict | None:
"""Load current task info for the Claude Code session JSON."""
scripts_dir = trellis_dir / "scripts"
if str(scripts_dir) not in sys.path:
sys.path.insert(0, str(scripts_dir))
try:
from common.active_task import resolve_active_task # type: ignore[import-not-found]
except Exception:
return None
active = resolve_active_task(trellis_dir.parent, cc_data, platform="claude")
if not active.task_path:
return None
task_path = _resolve_task_dir(trellis_dir, active.task_path)
if active.stale:
return {
"title": task_path.name,
"status": "stale",
"priority": "P?",
"source": active.source,
}
task_data = _read_json(task_path / "task.json")
if not task_data:
return None
return {
"title": task_data.get("title") or task_data.get("name") or "unknown",
"status": task_data.get("status", "unknown"),
"priority": task_data.get("priority", "P2"),
"source": active.source,
}
def _count_active_tasks(trellis_dir: Path) -> int:
"""Count non-archived task directories with valid task.json."""
tasks_dir = trellis_dir / "tasks"
if not tasks_dir.is_dir():
return 0
count = 0
for d in tasks_dir.iterdir():
if d.is_dir() and d.name != "archive" and (d / "task.json").is_file():
count += 1
return count
def _get_developer(trellis_dir: Path) -> str:
content = _read_text(trellis_dir / ".developer")
if not content:
return "unknown"
for line in content.splitlines():
if line.startswith("name="):
return line[5:].strip()
return content.splitlines()[0].strip() or "unknown"
def _get_git_branch() -> str:
try:
result = subprocess.run(
["git", "branch", "--show-current"],
capture_output=True, text=True, timeout=3,
)
return result.stdout.strip() if result.returncode == 0 else ""
except (FileNotFoundError, subprocess.TimeoutExpired):
return ""
def _format_ctx_size(size: int) -> str:
if size >= 1_000_000:
return f"{size // 1_000_000}M"
if size >= 1_000:
return f"{size // 1_000}K"
return str(size)
def _format_duration(ms: int) -> str:
secs = ms // 1000
hours, remainder = divmod(secs, 3600)
mins = remainder // 60
if hours > 0:
return f"{hours}h{mins}m"
return f"{mins}m"
def _format_remaining(secs: int) -> str:
if secs <= 0:
return ""
days, remainder = divmod(secs, 86400)
hours, remainder = divmod(remainder, 3600)
mins = remainder // 60
if days > 0:
return f"{days}d{hours}h"
if hours > 0:
return f"{hours}h{mins}m"
return f"{mins}m"
def _parse_resets_at(value: object) -> int:
"""`resets_at` is epoch seconds (int/float, possibly stringified) or an
ISO-8601 timestamp depending on Claude Code version. Return epoch
seconds, or 0 when absent/unparseable (countdown is then omitted)."""
if isinstance(value, (int, float)):
return int(value)
if isinstance(value, str) and value:
try:
return int(float(value))
except ValueError:
pass
try:
parsed = datetime.fromisoformat(value.replace("Z", "+00:00"))
return int(parsed.timestamp())
except ValueError:
pass
return 0
def _rate_limit_part(label: str, window: dict, now: int) -> str:
try:
pct = int(float(window.get("used_percentage"))) # pyright: ignore[reportArgumentType]
except (TypeError, ValueError):
return ""
part = f"{label} {pct}%"
remaining = _format_remaining(_parse_resets_at(window.get("resets_at")) - now)
if remaining:
part += f" \033[90m(reset {remaining})\033[0m"
return part
_ANSI_RE = re.compile(r"\x1b\[[0-9;]*m")
def _visible_len(s: str) -> int:
"""Length of s with ANSI escape sequences stripped."""
return len(_ANSI_RE.sub("", s))
def _terminal_width() -> int | None:
"""Terminal width from the COLUMNS env var, or None.
The statusline stdin JSON has no width field and stdout is a pipe, so
the COLUMNS env var (injected by Claude Code v2.1.153+) is the only
width signal. Absent or malformed values return None."""
try:
width = int(os.environ.get("COLUMNS", ""))
except ValueError:
return None
return width if width > 0 else None
def main() -> None:
# Read Claude Code session JSON from stdin
try:
cc_data = json.loads(sys.stdin.read())
except (json.JSONDecodeError, ValueError):
cc_data = {}
trellis_dir = _find_trellis_dir()
SEP = " \033[90m·\033[0m "
# --- Trellis data ---
task = _get_current_task_for_input(trellis_dir, cc_data) if trellis_dir else None
dev = _get_developer(trellis_dir) if trellis_dir else ""
task_count = _count_active_tasks(trellis_dir) if trellis_dir else 0
# --- CC session data ---
model = cc_data.get("model", {}).get("display_name", "?")
ctx_pct = int(cc_data.get("context_window", {}).get("used_percentage") or 0)
ctx_size = _format_ctx_size(cc_data.get("context_window", {}).get("context_window_size") or 0)
duration = _format_duration(cc_data.get("cost", {}).get("total_duration_ms") or 0)
branch = _get_git_branch()
# Avoid "Opus 4.6 (1M context) (1M)"
if re.search(r"\d+[KMG]\b", model, re.IGNORECASE):
model_label = model
else:
model_label = f"{model} ({ctx_size})"
# Context % with color
if ctx_pct >= 90:
ctx_color = "\033[31m"
elif ctx_pct >= 70:
ctx_color = "\033[33m"
else:
ctx_color = "\033[32m"
# Build info line: model · ctx · branch · duration · dev · tasks [· rate limits]
parts = [
model_label,
f"ctx {ctx_color}{ctx_pct}%\033[0m",
]
if branch:
parts.append(f"\033[35m{branch}\033[0m")
parts.append(duration)
if dev:
parts.append(f"\033[32m{dev}\033[0m")
if task_count:
parts.append(f"{task_count} task(s)")
now = int(time.time())
rate_limits = cc_data.get("rate_limits", {})
rate_parts: list[str] = []
for label, key in (("5h", "five_hour"), ("7d", "seven_day")):
part = _rate_limit_part(label, rate_limits.get(key) or {}, now)
if part:
rate_parts.append(part)
info_line = SEP.join(parts + rate_parts)
# Output: task line (only if active) + info line
if task:
source = str(task.get("source") or "")
source_tag = "session" if source.startswith("session:") else source
source_suffix = f" \033[90m[{source_tag}]\033[0m" if source_tag else ""
print(f"\033[36m[{task['priority']}]\033[0m {task['title']} \033[33m({task['status']})\033[0m{source_suffix}")
# Claude Code's status-bar height counts only "\n" characters, so a
# visually wrapped long line misaligns rows. When the host provides a
# terminal width and the info line would overflow, split the rate-limit
# segments onto their own line with an explicit "\n" instead.
width = _terminal_width()
if width is not None and rate_parts and _visible_len(info_line) > width:
print(SEP.join(parts))
print(SEP.join(rate_parts))
else:
print(info_line)
if __name__ == "__main__":
main()