JOJO
493ac160eb
- 进程终止：Windows 用 CTRL_BREAK + taskkill /F /T 替代不存在的 killpg/SIGKILL， 超时/取消全路径有界；_is_pid_alive 改 ctypes（原 os.kill(pid,0) 在 Windows 会真杀进程）； reader 任务 finally 收口，消除 Task was destroyed but it is pending / unclosed transport - 子智能体调度链：_run_coro 超时 60s + 失败 cancel/close 防幽灵协程；create 改先调度后提交、 失败回滚；state 归属守卫 + 新建 120s 宽限期防误标已终止；_ensure_event_loop 加锁； 子智能体 todo 改 per-agent 隔离存储，不再串到主智能体前端 - 子智能体执行环境（execution_env_text.py）：创建/切换/恢复三时点注入环境说明， Windows 下 sandbox=WSL2 bash、direct=cmd；inject_notification 纯通知不触发新一轮工作， tool 序列中延迟到安全点 flush；传统子智能体按既定语义不通知 - 编码：git 侧边栏 subprocess 显式 utf-8 + errors=replace（修中文 Windows GBK _readerthread 崩溃导致侧边栏空白）；check_environment/install_package 用 self.python_cmd - 安全/路径：permission.py Windows deny 列表生效 + 驱动器根拦截；路径比较统一 normcase； /tmp 白名单平台分流；正斜杠判断归一化；os-release 平台守卫；PowerShell -ExecutionPolicy Bypass - 稳定性：任务事件轮询持锁快照（修 deque mutated during iteration）； 原子写新增 replace_with_retry（修 WinError 5/32 瞬时持锁）； 共享文件兜底链 symlink→os.link 硬链接→copy2 - 部署：新增 _bootstrap.bat / setup.bat / start.bat Windows 启动脚本
605 lines
25 KiB
Python
605 lines
25 KiB
Python
"""Conversation-scoped shallow file versioning for workspace edits.
|
||
|
||
Mirrors the file-history approach of mainstream AI coding tools:
|
||
- Only files touched by write_file / edit_file are tracked.
|
||
- Before each edit the current content is backed up.
|
||
- A snapshot is taken per user message, referencing the latest backup version
|
||
of every tracked file at that point in time.
|
||
- Rewind restores the tracked files to the state recorded for a target message.
|
||
|
||
Persistence model (state.jsonl)
|
||
--------------------------------
|
||
INVARIANT: the on-disk state file holds **exactly one row per message_id** —
|
||
the most complete snapshot known for that message. While a message is being
|
||
processed, its single row grows as new files get tracked (track_edit rewrites
|
||
it); when the message finishes, make_snapshot replaces it with the final full
|
||
snapshot. Every mutation rewrites the whole file atomically (temp + replace),
|
||
so the invariant holds at rest, not only in memory.
|
||
|
||
Legacy append-only logs may contain multiple rows per message_id (intermediate
|
||
track_edit journals plus the final snapshot). _load_state collapses those
|
||
duplicates keeping the last row, which heals old state files transparently;
|
||
the next mutation rewrites the file clean permanently.
|
||
|
||
Concurrency: mutations (track_edit / make_snapshot) run inside a per-state-file
|
||
process lock as reload -> mutate -> save critical sections, so short-lived
|
||
manager instances (one per edit / per task end) can never lose each other's
|
||
rows. Readers only see whole files because writes go through os.replace.
|
||
"""
|
||
|
||
from __future__ import annotations
|
||
|
||
import hashlib
|
||
import json
|
||
import os
|
||
import shutil
|
||
import threading
|
||
from dataclasses import dataclass, field
|
||
from datetime import datetime
|
||
from pathlib import Path
|
||
from typing import Any, Dict, List, Optional, Set
|
||
|
||
from utils.atomic_io import replace_with_retry
|
||
|
||
|
||
class ShallowVersioningError(RuntimeError):
|
||
"""Raised when shallow versioning fails."""
|
||
|
||
|
||
@dataclass
|
||
class FileBackup:
|
||
backup_file_name: Optional[str] # null means the file did not exist at that version
|
||
version: int
|
||
backup_time: str
|
||
|
||
|
||
@dataclass
|
||
class ShallowSnapshot:
|
||
message_id: str
|
||
tracked_file_backups: Dict[str, FileBackup]
|
||
timestamp: str
|
||
|
||
|
||
# Process-level locks keyed by state file path, so that separate manager
|
||
# instances targeting the same conversation serialize their mutations.
|
||
_STATE_LOCKS: Dict[str, threading.Lock] = {}
|
||
_STATE_LOCKS_GUARD = threading.Lock()
|
||
|
||
|
||
def _state_lock_for(state_file: Path) -> threading.Lock:
|
||
key = str(state_file)
|
||
with _STATE_LOCKS_GUARD:
|
||
lock = _STATE_LOCKS.get(key)
|
||
if lock is None:
|
||
lock = threading.Lock()
|
||
_STATE_LOCKS[key] = lock
|
||
return lock
|
||
|
||
|
||
class ShallowVersioningManager:
|
||
"""Lightweight per-conversation backup for files edited by AI tools."""
|
||
|
||
MAX_SNAPSHOTS = 100
|
||
|
||
def __init__(self, project_path: Path | str, data_dir: Path | str, conversation_id: str):
|
||
self.project_path = Path(project_path).expanduser().resolve()
|
||
self.conversation_id = str(conversation_id or "").strip()
|
||
if not self.conversation_id:
|
||
raise ShallowVersioningError("缺少 conversation_id")
|
||
self.save_root = (Path(data_dir).expanduser().resolve() / "save" / self.conversation_id).resolve()
|
||
self.backup_dir = self.save_root / "shallow_backups"
|
||
self.state_file = self.backup_dir / "state.jsonl"
|
||
self._state_lock = _state_lock_for(self.state_file)
|
||
self._tracked_files: Set[str] = set()
|
||
self._snapshots: List[ShallowSnapshot] = []
|
||
self._snapshot_sequence = 0
|
||
self._load_state()
|
||
|
||
# ----------------------------
|
||
# persistence
|
||
# ----------------------------
|
||
def _load_state(self) -> None:
|
||
"""(Re)load snapshots from disk, collapsing duplicate rows per message_id.
|
||
|
||
Idempotent: resets in-memory state first, so it can be called inside
|
||
mutation critical sections to pick up rows written by other instances.
|
||
Legacy logs with multiple rows for the same message_id keep only the
|
||
last (most complete) row, ordered by last occurrence.
|
||
"""
|
||
self._tracked_files = set()
|
||
self._snapshots = []
|
||
self._snapshot_sequence = 0
|
||
if not self.state_file.exists():
|
||
return
|
||
try:
|
||
raw_lines = self.state_file.read_text(encoding="utf-8", errors="ignore").splitlines()
|
||
except OSError:
|
||
return
|
||
parsed: List[ShallowSnapshot] = []
|
||
for raw in raw_lines:
|
||
line = raw.strip()
|
||
if not line:
|
||
continue
|
||
try:
|
||
row = json.loads(line)
|
||
except Exception:
|
||
continue
|
||
if not isinstance(row, dict):
|
||
continue
|
||
snapshot = self._deserialize_snapshot(row)
|
||
if snapshot:
|
||
parsed.append(snapshot)
|
||
# Collapse duplicates: keep the last row per message_id.
|
||
last_index: Dict[str, int] = {}
|
||
for idx, snapshot in enumerate(parsed):
|
||
last_index[str(snapshot.message_id or "")] = idx
|
||
self._snapshots = [
|
||
snapshot for idx, snapshot in enumerate(parsed) if last_index[str(snapshot.message_id or "")] == idx
|
||
]
|
||
self._snapshot_sequence = len(self._snapshots)
|
||
for snapshot in self._snapshots:
|
||
self._tracked_files.update(snapshot.tracked_file_backups.keys())
|
||
|
||
def _save_state(self) -> None:
|
||
"""Persist the full snapshot list atomically (temp file + os.replace).
|
||
|
||
Must be called with self._state_lock held. Rewriting the whole file is
|
||
what enforces the one-row-per-message invariant on disk.
|
||
"""
|
||
self.backup_dir.mkdir(parents=True, exist_ok=True)
|
||
tmp_path = self.state_file.parent / (self.state_file.name + ".tmp")
|
||
payload = "".join(
|
||
json.dumps(self._serialize_snapshot(snapshot), ensure_ascii=False) + "\n"
|
||
for snapshot in self._snapshots
|
||
)
|
||
tmp_path.write_text(payload, encoding="utf-8")
|
||
# Windows 瞬时持锁（并发读取/杀软扫描）重试，POSIX 行为不变
|
||
replace_with_retry(tmp_path, self.state_file)
|
||
|
||
def _upsert_snapshot(self, snapshot: ShallowSnapshot) -> None:
|
||
"""Insert or replace the snapshot for its message_id in memory.
|
||
|
||
Removes every existing entry with the same message_id and places the
|
||
new snapshot at the position of the first removed entry (appends when
|
||
no entry existed), preserving chronological order.
|
||
"""
|
||
target_id = str(snapshot.message_id or "")
|
||
first_match = -1
|
||
for idx, existing in enumerate(self._snapshots):
|
||
if str(existing.message_id or "") == target_id:
|
||
first_match = idx
|
||
break
|
||
self._snapshots = [
|
||
existing for existing in self._snapshots if str(existing.message_id or "") != target_id
|
||
]
|
||
if first_match < 0:
|
||
self._snapshots.append(snapshot)
|
||
self._snapshot_sequence += 1
|
||
else:
|
||
insert_at = min(first_match, len(self._snapshots))
|
||
self._snapshots.insert(insert_at, snapshot)
|
||
|
||
def _serialize_snapshot(self, snapshot: ShallowSnapshot) -> Dict[str, Any]:
|
||
return {
|
||
"message_id": snapshot.message_id,
|
||
"timestamp": snapshot.timestamp,
|
||
"tracked_file_backups": {
|
||
path: {
|
||
"backup_file_name": backup.backup_file_name,
|
||
"version": backup.version,
|
||
"backup_time": backup.backup_time,
|
||
}
|
||
for path, backup in snapshot.tracked_file_backups.items()
|
||
},
|
||
}
|
||
|
||
def _deserialize_snapshot(self, row: Dict[str, Any]) -> Optional[ShallowSnapshot]:
|
||
if not isinstance(row.get("message_id"), str):
|
||
return None
|
||
backups: Dict[str, FileBackup] = {}
|
||
for path, backup_raw in (row.get("tracked_file_backups") or {}).items():
|
||
if not isinstance(backup_raw, dict):
|
||
continue
|
||
backups[str(path)] = FileBackup(
|
||
backup_file_name=backup_raw.get("backup_file_name"),
|
||
version=int(backup_raw.get("version") or 1),
|
||
backup_time=str(backup_raw.get("backup_time") or datetime.now().isoformat()),
|
||
)
|
||
return ShallowSnapshot(
|
||
message_id=row["message_id"],
|
||
tracked_file_backups=backups,
|
||
timestamp=str(row.get("timestamp") or datetime.now().isoformat()),
|
||
)
|
||
|
||
# ----------------------------
|
||
# path helpers
|
||
# ----------------------------
|
||
def _normalize_path(self, file_path: Path | str) -> str:
|
||
path = Path(file_path).expanduser()
|
||
if not path.is_absolute():
|
||
path = self.project_path / path
|
||
try:
|
||
rel = path.resolve().relative_to(self.project_path)
|
||
return str(rel).replace("\\", "/")
|
||
except ValueError:
|
||
return str(path).replace("\\", "/")
|
||
|
||
def _resolve_file_path(self, tracking_path: str) -> Path:
|
||
if Path(tracking_path).is_absolute():
|
||
return Path(tracking_path).expanduser().resolve()
|
||
return (self.project_path / tracking_path).resolve()
|
||
|
||
def _backup_file_name(self, tracking_path: str, version: int) -> str:
|
||
file_name_hash = hashlib.sha256(tracking_path.encode("utf-8")).hexdigest()[:16]
|
||
return f"{file_name_hash}@v{version}"
|
||
|
||
def _backup_path(self, backup_file_name: str) -> Path:
|
||
return (self.backup_dir / backup_file_name).resolve()
|
||
|
||
# ----------------------------
|
||
# backup operations
|
||
# ----------------------------
|
||
def _create_backup(self, file_path: Path, version: int) -> FileBackup:
|
||
backup_file_name = self._backup_file_name(str(file_path), version)
|
||
backup_path = self._backup_path(backup_file_name)
|
||
backup_path.parent.mkdir(parents=True, exist_ok=True)
|
||
|
||
if not file_path.exists():
|
||
return FileBackup(backup_file_name=None, version=version, backup_time=datetime.now().isoformat())
|
||
|
||
shutil.copy2(file_path, backup_path)
|
||
return FileBackup(
|
||
backup_file_name=backup_file_name,
|
||
version=version,
|
||
backup_time=datetime.now().isoformat(),
|
||
)
|
||
|
||
def _get_latest_backup_version(self, tracking_path: str) -> Optional[FileBackup]:
|
||
latest: Optional[FileBackup] = None
|
||
for snapshot in self._snapshots:
|
||
backup = snapshot.tracked_file_backups.get(tracking_path)
|
||
if backup and (latest is None or backup.version > latest.version):
|
||
latest = backup
|
||
return latest
|
||
|
||
def _file_changed_since_backup(self, file_path: Path, backup: FileBackup) -> bool:
|
||
if backup.backup_file_name is None:
|
||
return file_path.exists()
|
||
backup_path = self._backup_path(backup.backup_file_name)
|
||
if not file_path.exists():
|
||
return True
|
||
if not backup_path.exists():
|
||
return True
|
||
try:
|
||
if file_path.stat().st_size != backup_path.stat().st_size:
|
||
return True
|
||
current = file_path.read_text(encoding="utf-8", errors="ignore")
|
||
saved = backup_path.read_text(encoding="utf-8", errors="ignore")
|
||
return current != saved
|
||
except Exception:
|
||
return True
|
||
|
||
# ----------------------------
|
||
# public API
|
||
# ----------------------------
|
||
def _find_latest_snapshot_by_message_id(self, message_id: str) -> Optional[ShallowSnapshot]:
|
||
"""Return the most recent snapshot whose message_id matches."""
|
||
target = str(message_id or "")
|
||
for snapshot in reversed(self._snapshots):
|
||
if str(snapshot.message_id or "") == target:
|
||
return snapshot
|
||
return None
|
||
|
||
def track_edit(self, file_path: Path | str, message_id: str) -> None:
|
||
"""Track a file before it is edited; backup its current content if not already tracked."""
|
||
tracking_path = self._normalize_path(file_path)
|
||
from utils.perf_log import perf_log
|
||
perf_log("[ShallowVersioning] track_edit called", extra={
|
||
"tracking_path": tracking_path,
|
||
"message_id": message_id,
|
||
})
|
||
# Critical section: reload so rows written by other (short-lived)
|
||
# instances are visible, then mutate and save atomically.
|
||
with self._state_lock:
|
||
self._load_state()
|
||
if tracking_path in self._tracked_files:
|
||
return
|
||
|
||
resolved = self._resolve_file_path(tracking_path)
|
||
backup = self._create_backup(resolved, 1)
|
||
self._tracked_files.add(tracking_path)
|
||
|
||
# 归属到当前 message_id 对应的 snapshot；不存在则新建。
|
||
# 避免把本次输入的修改追加到上一个输入的 snapshot。
|
||
now = datetime.now().isoformat()
|
||
target_snapshot = self._find_latest_snapshot_by_message_id(message_id)
|
||
if target_snapshot is not None:
|
||
target_snapshot.tracked_file_backups[tracking_path] = backup
|
||
else:
|
||
target_snapshot = ShallowSnapshot(
|
||
message_id=message_id,
|
||
tracked_file_backups={tracking_path: backup},
|
||
timestamp=now,
|
||
)
|
||
self._upsert_snapshot(target_snapshot)
|
||
self._save_state()
|
||
|
||
def make_snapshot(self, message_id: str) -> Dict[str, Any]:
|
||
"""Create a snapshot for the given message, backing up changed tracked files."""
|
||
from utils.perf_log import perf_log
|
||
perf_log("[ShallowVersioning] make_snapshot called", extra={
|
||
"message_id": message_id,
|
||
})
|
||
# Critical section: reload so track_edit rows from other instances are
|
||
# visible before deciding what changed and which version comes next.
|
||
with self._state_lock:
|
||
self._load_state()
|
||
tracked_file_backups: Dict[str, FileBackup] = {}
|
||
now = datetime.now().isoformat()
|
||
|
||
for tracking_path in self._tracked_files:
|
||
resolved = self._resolve_file_path(tracking_path)
|
||
latest_backup = self._get_latest_backup_version(tracking_path)
|
||
next_version = (latest_backup.version + 1) if latest_backup else 1
|
||
|
||
if latest_backup and not self._file_changed_since_backup(resolved, latest_backup):
|
||
tracked_file_backups[tracking_path] = latest_backup
|
||
continue
|
||
|
||
tracked_file_backups[tracking_path] = self._create_backup(resolved, next_version)
|
||
|
||
snapshot = ShallowSnapshot(
|
||
message_id=message_id,
|
||
tracked_file_backups=tracked_file_backups,
|
||
timestamp=now,
|
||
)
|
||
# 一条消息只保留一个快照：替换 track_edit 阶段留下的进行中的行。
|
||
self._upsert_snapshot(snapshot)
|
||
|
||
# Evict old snapshots while keeping the most recent MAX_SNAPSHOTS.
|
||
if len(self._snapshots) > self.MAX_SNAPSHOTS:
|
||
self._snapshots = self._snapshots[-self.MAX_SNAPSHOTS :]
|
||
|
||
self._save_state()
|
||
|
||
perf_log("[ShallowVersioning] make_snapshot done", extra={
|
||
"message_id": message_id,
|
||
"tracked_files_count": len(tracked_file_backups),
|
||
"backups": {k: v.backup_file_name for k, v in tracked_file_backups.items()},
|
||
})
|
||
return {
|
||
"message_id": message_id,
|
||
"tracked_files_count": len(tracked_file_backups),
|
||
"timestamp": now,
|
||
}
|
||
|
||
def can_restore(self, message_id: str) -> bool:
|
||
return any(snapshot.message_id == message_id for snapshot in self._snapshots)
|
||
|
||
def rewind(self, message_id: str) -> Dict[str, Any]:
|
||
"""Restore tracked files to the state recorded for the target message."""
|
||
target_snapshot: Optional[ShallowSnapshot] = None
|
||
for snapshot in reversed(self._snapshots):
|
||
if snapshot.message_id == message_id:
|
||
target_snapshot = snapshot
|
||
break
|
||
if not target_snapshot:
|
||
raise ShallowVersioningError(f"未找到消息 {message_id} 对应的快照")
|
||
|
||
files_changed: List[str] = []
|
||
for tracking_path in self._tracked_files:
|
||
target_backup = target_snapshot.tracked_file_backups.get(tracking_path)
|
||
if not target_backup:
|
||
# File was not tracked at the target snapshot; leave it unchanged.
|
||
continue
|
||
|
||
resolved = self._resolve_file_path(tracking_path)
|
||
if target_backup.backup_file_name is None:
|
||
if resolved.exists():
|
||
resolved.unlink()
|
||
files_changed.append(tracking_path)
|
||
continue
|
||
|
||
backup_path = self._backup_path(target_backup.backup_file_name)
|
||
if not backup_path.exists():
|
||
continue
|
||
if self._file_changed_since_backup(resolved, target_backup):
|
||
resolved.parent.mkdir(parents=True, exist_ok=True)
|
||
shutil.copy2(backup_path, resolved)
|
||
files_changed.append(tracking_path)
|
||
|
||
return {
|
||
"success": True,
|
||
"message_id": message_id,
|
||
"files_changed": files_changed,
|
||
}
|
||
|
||
def _read_backup_lines(self, backup: Optional[FileBackup]) -> List[str]:
|
||
"""Read lines from a backup entry; empty list for missing/deleted files."""
|
||
if not backup or backup.backup_file_name is None:
|
||
return []
|
||
backup_path = self._backup_path(backup.backup_file_name)
|
||
if not backup_path.exists():
|
||
return []
|
||
try:
|
||
return backup_path.read_text(encoding="utf-8", errors="ignore").splitlines()
|
||
except Exception:
|
||
return []
|
||
|
||
def _count_line_changes(self, previous_lines: List[str], target_lines: List[str]) -> tuple[int, int]:
|
||
"""Count real insertions/deletions between two line lists using SequenceMatcher."""
|
||
if previous_lines == target_lines:
|
||
return 0, 0
|
||
try:
|
||
import difflib
|
||
sm = difflib.SequenceMatcher(None, previous_lines, target_lines)
|
||
except Exception:
|
||
# Fallback to naive delta if difflib fails.
|
||
if len(previous_lines) > len(target_lines):
|
||
return 0, len(previous_lines) - len(target_lines)
|
||
return len(target_lines) - len(previous_lines), 0
|
||
|
||
insertions = 0
|
||
deletions = 0
|
||
for tag, i1, i2, j1, j2 in sm.get_opcodes():
|
||
if tag == "insert":
|
||
insertions += j2 - j1
|
||
elif tag == "delete":
|
||
deletions += i2 - i1
|
||
elif tag == "replace":
|
||
insertions += j2 - j1
|
||
deletions += i2 - i1
|
||
return insertions, deletions
|
||
|
||
def _find_snapshot_pair(self, message_id: str):
|
||
"""Return (target_snapshot, previous_snapshot) for the given message_id.
|
||
|
||
The previous snapshot is the nearest preceding snapshot belonging to a
|
||
*different* message_id, so duplicate rows of the same message can never
|
||
be mistaken for the diff base.
|
||
"""
|
||
target_snapshot: Optional[ShallowSnapshot] = None
|
||
target_index = -1
|
||
target_id = str(message_id or "")
|
||
for idx, snapshot in enumerate(self._snapshots):
|
||
if str(snapshot.message_id or "") == target_id:
|
||
target_snapshot = snapshot
|
||
target_index = idx
|
||
if not target_snapshot or target_index < 0:
|
||
return None, None
|
||
previous_snapshot: Optional[ShallowSnapshot] = None
|
||
for idx in range(target_index - 1, -1, -1):
|
||
if str(self._snapshots[idx].message_id or "") != target_id:
|
||
previous_snapshot = self._snapshots[idx]
|
||
break
|
||
return target_snapshot, previous_snapshot
|
||
|
||
def get_diff_stats(self, message_id: str) -> Optional[Dict[str, Any]]:
|
||
"""Compute insertions/deletions/files_changed between the target snapshot and the previous snapshot."""
|
||
target_snapshot, previous_snapshot = self._find_snapshot_pair(message_id)
|
||
if not target_snapshot:
|
||
return None
|
||
|
||
files_changed: List[str] = []
|
||
insertions = 0
|
||
deletions = 0
|
||
|
||
for tracking_path in self._tracked_files:
|
||
target_backup = target_snapshot.tracked_file_backups.get(tracking_path)
|
||
if not target_backup:
|
||
continue
|
||
|
||
previous_backup = previous_snapshot.tracked_file_backups.get(tracking_path) if previous_snapshot else None
|
||
previous_lines = self._read_backup_lines(previous_backup)
|
||
target_lines = self._read_backup_lines(target_backup)
|
||
|
||
if previous_lines == target_lines:
|
||
continue
|
||
|
||
files_changed.append(tracking_path)
|
||
ins, dels = self._count_line_changes(previous_lines, target_lines)
|
||
insertions += ins
|
||
deletions += dels
|
||
|
||
return {
|
||
"filesChanged": files_changed,
|
||
"insertions": insertions,
|
||
"deletions": deletions,
|
||
}
|
||
|
||
def has_any_changes(self, message_id: str) -> bool:
|
||
stats = self.get_diff_stats(message_id)
|
||
if not stats:
|
||
return False
|
||
return bool(stats.get("filesChanged"))
|
||
|
||
def get_file_diff_stats(self, message_id: str) -> List[Dict[str, Any]]:
|
||
"""Return per-file insertions/deletions/status for a target snapshot vs previous snapshot."""
|
||
target_snapshot, previous_snapshot = self._find_snapshot_pair(message_id)
|
||
if not target_snapshot:
|
||
return []
|
||
|
||
result: List[Dict[str, Any]] = []
|
||
for tracking_path in self._tracked_files:
|
||
target_backup = target_snapshot.tracked_file_backups.get(tracking_path)
|
||
if not target_backup:
|
||
continue
|
||
|
||
previous_backup = previous_snapshot.tracked_file_backups.get(tracking_path) if previous_snapshot else None
|
||
previous_lines = self._read_backup_lines(previous_backup)
|
||
target_lines = self._read_backup_lines(target_backup)
|
||
|
||
if previous_lines == target_lines:
|
||
continue
|
||
|
||
insertions, deletions = self._count_line_changes(previous_lines, target_lines)
|
||
|
||
status = "deleted" if target_backup.backup_file_name is None else ("added" if previous_backup is None or previous_backup.backup_file_name is None else "modified")
|
||
result.append({
|
||
"path": tracking_path,
|
||
"status": status,
|
||
"insertions": insertions,
|
||
"deletions": deletions,
|
||
})
|
||
return result
|
||
|
||
def get_file_patch_lines(
|
||
self,
|
||
tracking_path: str,
|
||
message_id: str,
|
||
max_lines: int = 600,
|
||
) -> Dict[str, Any]:
|
||
"""Return contextual patch lines between target snapshot and previous snapshot."""
|
||
target_snapshot, previous_snapshot = self._find_snapshot_pair(message_id)
|
||
if not target_snapshot:
|
||
return {"lines": [], "truncated": False}
|
||
|
||
target_backup = target_snapshot.tracked_file_backups.get(tracking_path)
|
||
if not target_backup:
|
||
return {"lines": [], "truncated": False}
|
||
|
||
previous_backup = previous_snapshot.tracked_file_backups.get(tracking_path) if previous_snapshot else None
|
||
previous_lines = self._read_backup_lines(previous_backup)
|
||
target_lines = self._read_backup_lines(target_backup)
|
||
|
||
if previous_lines == target_lines:
|
||
return {"lines": [], "truncated": False}
|
||
|
||
try:
|
||
import difflib
|
||
sm = difflib.SequenceMatcher(None, previous_lines, target_lines)
|
||
except Exception:
|
||
return {"lines": [], "truncated": False}
|
||
|
||
lines: List[Dict[str, Any]] = []
|
||
truncated = False
|
||
for tag, i1, i2, j1, j2 in sm.get_opcodes():
|
||
if tag == "equal":
|
||
continue
|
||
if tag == "replace" or tag == "delete":
|
||
for line in previous_lines[i1:i2]:
|
||
if len(lines) >= max_lines:
|
||
truncated = True
|
||
break
|
||
lines.append({"type": "remove", "content": line})
|
||
if tag == "replace" or tag == "insert":
|
||
for line in target_lines[j1:j2]:
|
||
if len(lines) >= max_lines:
|
||
truncated = True
|
||
break
|
||
lines.append({"type": "add", "content": line})
|
||
if truncated:
|
||
break
|
||
return {"lines": lines, "truncated": truncated}
|
||
|
||
def get_snapshot_by_seq(self, seq: int) -> Optional[ShallowSnapshot]:
|
||
"""Return the user-message snapshot by 1-based index (skips the initial track_edit snapshot)."""
|
||
user_snapshots = [s for s in self._snapshots if s.message_id != self.conversation_id]
|
||
idx = int(seq) - 1
|
||
if idx < 0 or idx >= len(user_snapshots):
|
||
return None
|
||
return user_snapshots[idx]
|
||
|
||
def list_snapshots(self) -> List[Dict[str, Any]]:
|
||
return [self._serialize_snapshot(s) for s in self._snapshots]
|