"""Git utilities for detecting changed files and current commit."""
from __future__ import annotations
import logging
import subprocess
from pathlib import Path
logger = logging.getLogger(__name__)
def current_commit(repo_path: str | Path) -> str | None:
"""Return the current HEAD commit hash, or None if not a git repo."""
try:
result = subprocess.run(
["git", "rev-parse", "HEAD"],
cwd=str(repo_path),
capture_output=True,
text=True,
timeout=10,
)
if result.returncode == 0:
return result.stdout.strip()
except (subprocess.TimeoutExpired, FileNotFoundError):
pass
return None
def changed_files(repo_path: str | Path, since_commit: str) -> list[Path]:
"""Return list of files changed between *since_commit* and HEAD.
Falls back to returning all files if git diff fails.
"""
try:
result = subprocess.run(
["git", "diff", "--name-only", "--diff-filter=ACMR", f"{since_commit}..HEAD"],
cwd=str(repo_path),
capture_output=True,
text=True,
timeout=30,
)
if result.returncode == 0:
return [Path(repo_path) / f for f in result.stdout.strip().split("\n") if f]
except (subprocess.TimeoutExpired, FileNotFoundError):
logger.warning("git diff failed for %s, treating all files as changed", repo_path)
return []
def deleted_files(repo_path: str | Path, since_commit: str) -> list[str]:
"""Return list of files deleted between *since_commit* and HEAD."""
try:
result = subprocess.run(
["git", "diff", "--name-only", "--diff-filter=D", f"{since_commit}..HEAD"],
cwd=str(repo_path),
capture_output=True,
text=True,
timeout=30,
)
if result.returncode == 0:
return [f for f in result.stdout.strip().split("\n") if f]
except (subprocess.TimeoutExpired, FileNotFoundError):
pass
return []
def is_git_repo(repo_path: str | Path) -> bool:
"""Check if the given path is inside a git repository."""
try:
result = subprocess.run(
["git", "rev-parse", "--is-inside-work-tree"],
cwd=str(repo_path),
capture_output=True,
text=True,
timeout=5,
)
return result.returncode == 0 and result.stdout.strip() == "true"
except (subprocess.TimeoutExpired, FileNotFoundError):
return False
