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"""Read-only git queries against the GpgFrontend repository.
The pipeline never runs git in the Manual repository.
"""
from __future__ import annotations
import subprocess
from pathlib import Path
from common import PipelineError
def _git(repo: Path, *args: str) -> subprocess.CompletedProcess:
try:
return subprocess.run(
["git", "-c", "core.quotepath=off", "-C", str(repo), *args],
capture_output=True, check=False, timeout=120,
)
except OSError as exc:
raise PipelineError(f"cannot run git: {exc}") from exc
def _out(proc: subprocess.CompletedProcess) -> str:
return proc.stdout.decode("utf-8", "replace")
def head(repo: Path) -> str:
proc = _git(repo, "rev-parse", "HEAD")
if proc.returncode != 0:
raise PipelineError(f"{repo}: not a git repository with a HEAD commit")
return _out(proc).strip()
def commit_exists(repo: Path, commit: str) -> bool:
if not commit:
return False
return _git(repo, "cat-file", "-e", f"{commit}^{{commit}}").returncode == 0
def is_ancestor(repo: Path, commit: str, ref: str = "HEAD") -> bool:
proc = _git(repo, "merge-base", "--is-ancestor", commit, ref)
if proc.returncode not in (0, 1):
raise PipelineError(f"git merge-base failed: {proc.stderr.decode('utf-8', 'replace').strip()}")
return proc.returncode == 0
def changed_since(repo: Path, commit: str, paths: list[str]) -> list[str]:
if not paths:
return []
proc = _git(repo, "diff", "--name-only", commit, "HEAD", "--", *paths)
if proc.returncode != 0:
raise PipelineError(f"git diff failed: {proc.stderr.decode('utf-8', 'replace').strip()}")
return [line for line in _out(proc).splitlines() if line.strip()]
def dirty(repo: Path, paths: list[str]) -> list[str]:
if not paths:
return []
proc = _git(repo, "status", "--porcelain", "--", *paths)
if proc.returncode != 0:
raise PipelineError(f"git status failed: {proc.stderr.decode('utf-8', 'replace').strip()}")
return [line for line in _out(proc).splitlines() if line.strip()]
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