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import os.path
import re
from typing import Any
from typing import Dict
from typing import List
from typing import NamedTuple
from typing import Optional
from typing import Sequence
from typing import Tuple
import pre_commit.constants as C
from pre_commit import git
from pre_commit import output
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.store import Store
from pre_commit.util import CalledProcessError
from pre_commit.util import cmd_output
from pre_commit.util import cmd_output_b
from pre_commit.util import tmpdir
from pre_commit.util import yaml_dump
from pre_commit.util import yaml_load
class RevInfo(NamedTuple):
repo: str
rev: str
frozen: Optional[str]
@classmethod
def from_config(cls, config: Dict[str, Any]) -> 'RevInfo':
return cls(config['repo'], config['rev'], None)
def update(self, tags_only: bool, freeze: bool) -> 'RevInfo':
if tags_only:
tag_cmd = ('git', 'describe', 'FETCH_HEAD', '--tags', '--abbrev=0')
else:
tag_cmd = ('git', 'describe', 'FETCH_HEAD', '--tags', '--exact')
with tmpdir() as tmp:
git.init_repo(tmp, self.repo)
cmd_output_b('git', 'fetch', 'origin', 'HEAD', '--tags', cwd=tmp)
try:
rev = cmd_output(*tag_cmd, cwd=tmp)[1].strip()
except CalledProcessError:
cmd = ('git', 'rev-parse', 'FETCH_HEAD')
rev = cmd_output(*cmd, cwd=tmp)[1].strip()
frozen = None
if freeze:
exact = cmd_output('git', 'rev-parse', rev, cwd=tmp)[1].strip()
if exact != rev:
rev, frozen = exact, rev
return self._replace(rev=rev, frozen=frozen)
class RepositoryCannotBeUpdatedError(RuntimeError):
pass
def _check_hooks_still_exist_at_rev(
repo_config: Dict[str, Any],
info: RevInfo,
store: Store,
) -> None:
try:
path = store.clone(repo_config['repo'], info.rev)
manifest = load_manifest(os.path.join(path, C.MANIFEST_FILE))
except InvalidManifestError as e:
raise RepositoryCannotBeUpdatedError(str(e))
# See if any of our hooks were deleted with the new commits
hooks = {hook['id'] for hook in repo_config['hooks']}
hooks_missing = hooks - {hook['id'] for hook in manifest}
if hooks_missing:
raise RepositoryCannotBeUpdatedError(
f'Cannot update because the tip of HEAD is missing these hooks:\n'
f'{", ".join(sorted(hooks_missing))}',
)
REV_LINE_RE = re.compile(r'^(\s+)rev:(\s*)([^\s#]+)(.*)(\r?\n)$', re.DOTALL)
def _original_lines(
path: str,
rev_infos: List[Optional[RevInfo]],
retry: bool = False,
) -> Tuple[List[str], List[int]]:
"""detect `rev:` lines or reformat the file"""
with open(path) 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[Optional[RevInfo]]) -> 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})
new_rev = new_rev_s.split(':', 1)[1].strip()
if rev_info.frozen is not None:
comment = f' # frozen: {rev_info.frozen}'
elif match[4].strip().startswith('# frozen:'):
comment = ''
else:
comment = match[4]
lines[idx] = f'{match[1]}rev:{match[2]}{new_rev}{comment}{match[5]}'
with open(path, 'w') as f:
f.write(''.join(lines))
def autoupdate(
config_file: str,
store: Store,
tags_only: bool,
freeze: bool,
repos: Sequence[str] = (),
) -> int:
"""Auto-update the pre-commit config to the latest versions of repos."""
migrate_config(config_file, quiet=True)
retv = 0
rev_infos: List[Optional[RevInfo]] = []
changed = False
config = load_config(config_file)
for repo_config in config['repos']:
if repo_config['repo'] in {LOCAL, META}:
continue
info = RevInfo.from_config(repo_config)
if repos and info.repo not in repos:
rev_infos.append(None)
continue
output.write(f'Updating {info.repo} ... ')
new_info = info.update(tags_only=tags_only, freeze=freeze)
try:
_check_hooks_still_exist_at_rev(repo_config, new_info, store)
except RepositoryCannotBeUpdatedError as error:
output.write_line(error.args[0])
rev_infos.append(None)
retv = 1
continue
if new_info.rev != info.rev:
changed = True
if new_info.frozen:
updated_to = f'{new_info.frozen} (frozen)'
else:
updated_to = new_info.rev
msg = f'updating {info.rev} -> {updated_to}.'
output.write_line(msg)
rev_infos.append(new_info)
else:
output.write_line('already up to date.')
rev_infos.append(None)
if changed:
_write_new_config(config_file, rev_infos)
return retv
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