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from __future__ import annotations
import concurrent.futures
import os.path
import re
import tempfile
from typing import Any
from typing import NamedTuple
from typing import Sequence
import pre_commit.constants as C
from pre_commit import git
from pre_commit import output
from pre_commit import xargs
from pre_commit.clientlib import InvalidManifestError
from pre_commit.clientlib import load_config
from pre_commit.clientlib import load_manifest
from pre_commit.clientlib import LOCAL
from pre_commit.clientlib import META
from pre_commit.commands.migrate_config import migrate_config
from pre_commit.util import CalledProcessError
from pre_commit.util import cmd_output
from pre_commit.util import cmd_output_b
from pre_commit.yaml import yaml_dump
from pre_commit.yaml import yaml_load
class RevInfo(NamedTuple):
repo: str
rev: str
frozen: str | None = None
hook_ids: frozenset[str] = frozenset()
@classmethod
def from_config(cls, config: dict[str, Any]) -> RevInfo:
return cls(config['repo'], config['rev'])
def update(self, tags_only: bool, freeze: bool) -> RevInfo:
with tempfile.TemporaryDirectory() as tmp:
_git = ('git', *git.NO_FS_MONITOR, '-C', tmp)
if tags_only:
tag_opt = '--abbrev=0'
else:
tag_opt = '--exact'
tag_cmd = (*_git, 'describe', 'FETCH_HEAD', '--tags', tag_opt)
git.init_repo(tmp, self.repo)
cmd_output_b(*_git, 'config', 'extensions.partialClone', 'true')
cmd_output_b(
*_git, 'fetch', 'origin', 'HEAD',
'--quiet', '--filter=blob:none', '--tags',
)
try:
rev = cmd_output(*tag_cmd)[1].strip()
except CalledProcessError:
rev = cmd_output(*_git, 'rev-parse', 'FETCH_HEAD')[1].strip()
else:
if tags_only:
rev = git.get_best_candidate_tag(rev, tmp)
frozen = None
if freeze:
exact = cmd_output(*_git, 'rev-parse', rev)[1].strip()
if exact != rev:
rev, frozen = exact, rev
try:
# workaround for windows -- see #2865
cmd_output_b(*_git, 'show', f'{rev}:{C.MANIFEST_FILE}')
cmd_output(*_git, 'checkout', rev, '--', C.MANIFEST_FILE)
except CalledProcessError:
pass # this will be caught by manifest validating code
try:
manifest = load_manifest(os.path.join(tmp, C.MANIFEST_FILE))
except InvalidManifestError as e:
raise RepositoryCannotBeUpdatedError(f'[{self.repo}] {e}')
else:
hook_ids = frozenset(hook['id'] for hook in manifest)
return self._replace(rev=rev, frozen=frozen, hook_ids=hook_ids)
class RepositoryCannotBeUpdatedError(RuntimeError):
pass
def _check_hooks_still_exist_at_rev(
repo_config: dict[str, Any],
info: RevInfo,
) -> None:
# See if any of our hooks were deleted with the new commits
hooks = {hook['id'] for hook in repo_config['hooks']}
hooks_missing = hooks - info.hook_ids
if hooks_missing:
raise RepositoryCannotBeUpdatedError(
f'[{info.repo}] Cannot update because the update target is '
f'missing these hooks: {", ".join(sorted(hooks_missing))}',
)
def _update_one(
i: int,
repo: dict[str, Any],
*,
tags_only: bool,
freeze: bool,
) -> tuple[int, RevInfo, RevInfo]:
old = RevInfo.from_config(repo)
new = old.update(tags_only=tags_only, freeze=freeze)
_check_hooks_still_exist_at_rev(repo, new)
return i, old, new
REV_LINE_RE = re.compile(r'^(\s+)rev:(\s*)([\'"]?)([^\s#]+)(.*)(\r?\n)$')
def _original_lines(
path: str,
rev_infos: list[RevInfo | None],
retry: bool = False,
) -> tuple[list[str], list[int]]:
"""detect `rev:` lines or reformat the file"""
with open(path, newline='') as f:
original = f.read()
lines = original.splitlines(True)
idxs = [i for i, line in enumerate(lines) if REV_LINE_RE.match(line)]
if len(idxs) == len(rev_infos):
return lines, idxs
elif retry:
raise AssertionError('could not find rev lines')
else:
with open(path, 'w') as f:
f.write(yaml_dump(yaml_load(original)))
return _original_lines(path, rev_infos, retry=True)
def _write_new_config(path: str, rev_infos: list[RevInfo | None]) -> None:
lines, idxs = _original_lines(path, rev_infos)
for idx, rev_info in zip(idxs, rev_infos):
if rev_info is None:
continue
match = REV_LINE_RE.match(lines[idx])
assert match is not None
new_rev_s = yaml_dump({'rev': rev_info.rev}, default_style=match[3])
new_rev = new_rev_s.split(':', 1)[1].strip()
if rev_info.frozen is not None:
comment = f' # frozen: {rev_info.frozen}'
elif match[5].strip().startswith('# frozen:'):
comment = ''
else:
comment = match[5]
lines[idx] = f'{match[1]}rev:{match[2]}{new_rev}{comment}{match[6]}'
with open(path, 'w', newline='') as f:
f.write(''.join(lines))
def autoupdate(
config_file: str,
tags_only: bool,
freeze: bool,
repos: Sequence[str] = (),
jobs: int = 1,
) -> int:
"""Auto-update the pre-commit config to the latest versions of repos."""
migrate_config(config_file, quiet=True)
changed = False
retv = 0
config_repos = [
repo for repo in load_config(config_file)['repos']
if repo['repo'] not in {LOCAL, META}
]
rev_infos: list[RevInfo | None] = [None] * len(config_repos)
jobs = jobs or xargs.cpu_count() # 0 => number of cpus
jobs = min(jobs, len(repos) or len(config_repos)) # max 1-per-thread
jobs = max(jobs, 1) # at least one thread
with concurrent.futures.ThreadPoolExecutor(jobs) as exe:
futures = [
exe.submit(
_update_one,
i, repo, tags_only=tags_only, freeze=freeze,
)
for i, repo in enumerate(config_repos)
if not repos or repo['repo'] in repos
]
for future in concurrent.futures.as_completed(futures):
try:
i, old, new = future.result()
except RepositoryCannotBeUpdatedError as e:
output.write_line(str(e))
retv = 1
else:
if new.rev != old.rev:
changed = True
if new.frozen:
new_s = f'{new.frozen} (frozen)'
else:
new_s = new.rev
msg = f'updating {old.rev} -> {new_s}'
rev_infos[i] = new
else:
msg = 'already up to date!'
output.write_line(f'[{old.repo}] {msg}')
if changed:
_write_new_config(config_file, rev_infos)
return retv
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