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python3.8
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pre_commit
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commands
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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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