import argparse import logging import os import sys from typing import Any from typing import Optional from typing import Sequence from typing import Union import pre_commit.constants as C from pre_commit import git from pre_commit.color import add_color_option from pre_commit.commands.autoupdate import autoupdate from pre_commit.commands.clean import clean from pre_commit.commands.gc import gc from pre_commit.commands.hook_impl import hook_impl from pre_commit.commands.init_templatedir import init_templatedir from pre_commit.commands.install_uninstall import install from pre_commit.commands.install_uninstall import install_hooks from pre_commit.commands.install_uninstall import uninstall from pre_commit.commands.migrate_config import migrate_config from pre_commit.commands.run import run from pre_commit.commands.sample_config import sample_config from pre_commit.commands.try_repo import try_repo from pre_commit.error_handler import error_handler from pre_commit.error_handler import FatalError from pre_commit.logging_handler import logging_handler from pre_commit.store import Store from pre_commit.util import CalledProcessError logger = logging.getLogger('pre_commit') # https://github.com/pre-commit/pre-commit/issues/217 # On OSX, making a virtualenv using pyvenv at . causes `virtualenv` and `pip` # to install packages to the wrong place. We don't want anything to deal with # pyvenv os.environ.pop('__PYVENV_LAUNCHER__', None) COMMANDS_NO_GIT = {'clean', 'gc', 'init-templatedir', 'sample-config'} def _add_config_option(parser: argparse.ArgumentParser) -> None: parser.add_argument( '-c', '--config', default=C.CONFIG_FILE, help='Path to alternate config file', ) class AppendReplaceDefault(argparse.Action): def __init__(self, *args: Any, **kwargs: Any) -> None: super().__init__(*args, **kwargs) self.appended = False def __call__( self, parser: argparse.ArgumentParser, namespace: argparse.Namespace, values: Union[str, Sequence[str], None], option_string: Optional[str] = None, ) -> None: if not self.appended: setattr(namespace, self.dest, []) self.appended = True getattr(namespace, self.dest).append(values) def _add_hook_type_option(parser: argparse.ArgumentParser) -> None: parser.add_argument( '-t', '--hook-type', choices=( 'pre-commit', 'pre-merge-commit', 'pre-push', 'prepare-commit-msg', 'commit-msg', 'post-commit', 'post-checkout', ), action=AppendReplaceDefault, default=['pre-commit'], dest='hook_types', ) def _add_run_options(parser: argparse.ArgumentParser) -> None: parser.add_argument('hook', nargs='?', help='A single hook-id to run') parser.add_argument('--verbose', '-v', action='store_true', default=False) mutex_group = parser.add_mutually_exclusive_group(required=False) mutex_group.add_argument( '--all-files', '-a', action='store_true', default=False, help='Run on all the files in the repo.', ) mutex_group.add_argument( '--files', nargs='*', default=[], help='Specific filenames to run hooks on.', ) parser.add_argument( '--show-diff-on-failure', action='store_true', help='When hooks fail, run `git diff` directly afterward.', ) parser.add_argument( '--hook-stage', choices=C.STAGES, default='commit', help='The stage during which the hook is fired. One of %(choices)s', ) parser.add_argument( '--from-ref', '--source', '-s', help=( '(for usage with `--from-ref`) -- this option represents the ' 'original ref in a `from_ref...to_ref` diff expression. ' 'For `pre-push` hooks, this represents the branch you are pushing ' 'to. ' 'For `post-checkout` hooks, this represents the branch that was ' 'previously checked out.' ), ) parser.add_argument( '--to-ref', '--origin', '-o', help=( '(for usage with `--to-ref`) -- this option represents the ' 'destination ref in a `from_ref...to_ref` diff expression. ' 'For `pre-push` hooks, this represents the branch being pushed. ' 'For `post-checkout` hooks, this represents the branch that is ' 'now checked out.' ), ) parser.add_argument( '--commit-msg-filename', help='Filename to check when running during `commit-msg`', ) parser.add_argument( '--remote-name', help='Remote name used by `git push`.', ) parser.add_argument('--remote-url', help='Remote url used by `git push`.') parser.add_argument( '--checkout-type', help=( 'Indicates whether the checkout was a branch checkout ' '(changing branches, flag=1) or a file checkout (retrieving a ' 'file from the index, flag=0).' ), ) def _adjust_args_and_chdir(args: argparse.Namespace) -> None: # `--config` was specified relative to the non-root working directory if os.path.exists(args.config): args.config = os.path.abspath(args.config) if args.command in {'run', 'try-repo'}: args.files = [os.path.abspath(filename) for filename in args.files] if args.command == 'try-repo' and os.path.exists(args.repo): args.repo = os.path.abspath(args.repo) try: toplevel = git.get_root() except CalledProcessError: raise FatalError( 'git failed. Is it installed, and are you in a Git repository ' 'directory?', ) else: if toplevel == '': # pragma: no cover (old git) raise FatalError( 'git toplevel unexpectedly empty! make sure you are not ' 'inside the `.git` directory of your repository.', ) else: os.chdir(toplevel) args.config = os.path.relpath(args.config) if args.command in {'run', 'try-repo'}: args.files = [os.path.relpath(filename) for filename in args.files] if args.command == 'try-repo' and os.path.exists(args.repo): args.repo = os.path.relpath(args.repo) def main(argv: Optional[Sequence[str]] = None) -> int: argv = argv if argv is not None else sys.argv[1:] parser = argparse.ArgumentParser(prog='pre-commit') # https://stackoverflow.com/a/8521644/812183 parser.add_argument( '-V', '--version', action='version', version=f'%(prog)s {C.VERSION}', ) subparsers = parser.add_subparsers(dest='command') autoupdate_parser = subparsers.add_parser( 'autoupdate', help="Auto-update pre-commit config to the latest repos' versions.", ) add_color_option(autoupdate_parser) _add_config_option(autoupdate_parser) autoupdate_parser.add_argument( '--bleeding-edge', action='store_true', help=( 'Update to the bleeding edge of `master` instead of the latest ' 'tagged version (the default behavior).' ), ) autoupdate_parser.add_argument( '--freeze', action='store_true', help='Store "frozen" hashes in `rev` instead of tag names', ) autoupdate_parser.add_argument( '--repo', dest='repos', action='append', metavar='REPO', help='Only update this repository -- may be specified multiple times.', ) clean_parser = subparsers.add_parser( 'clean', help='Clean out pre-commit files.', ) add_color_option(clean_parser) _add_config_option(clean_parser) hook_impl_parser = subparsers.add_parser('hook-impl') add_color_option(hook_impl_parser) _add_config_option(hook_impl_parser) hook_impl_parser.add_argument('--hook-type') hook_impl_parser.add_argument('--hook-dir') hook_impl_parser.add_argument( '--skip-on-missing-config', action='store_true', ) hook_impl_parser.add_argument(dest='rest', nargs=argparse.REMAINDER) gc_parser = subparsers.add_parser('gc', help='Clean unused cached repos.') add_color_option(gc_parser) _add_config_option(gc_parser) init_templatedir_parser = subparsers.add_parser( 'init-templatedir', help=( 'Install hook script in a directory intended for use with ' '`git config init.templateDir`.' ), ) add_color_option(init_templatedir_parser) _add_config_option(init_templatedir_parser) init_templatedir_parser.add_argument( 'directory', help='The directory in which to write the hook script.', ) init_templatedir_parser.add_argument( '--no-allow-missing-config', action='store_false', dest='allow_missing_config', help='Assume cloned repos should have a `pre-commit` config.', ) _add_hook_type_option(init_templatedir_parser) install_parser = subparsers.add_parser( 'install', help='Install the pre-commit script.', ) add_color_option(install_parser) _add_config_option(install_parser) install_parser.add_argument( '-f', '--overwrite', action='store_true', help='Overwrite existing hooks / remove migration mode.', ) install_parser.add_argument( '--install-hooks', action='store_true', help=( 'Whether to install hook environments for all environments ' 'in the config file.' ), ) _add_hook_type_option(install_parser) install_parser.add_argument( '--allow-missing-config', action='store_true', default=False, help=( 'Whether to allow a missing `pre-commit` configuration file ' 'or exit with a failure code.' ), ) install_hooks_parser = subparsers.add_parser( 'install-hooks', help=( 'Install hook environments for all environments in the config ' 'file. You may find `pre-commit install --install-hooks` more ' 'useful.' ), ) add_color_option(install_hooks_parser) _add_config_option(install_hooks_parser) migrate_config_parser = subparsers.add_parser( 'migrate-config', help='Migrate list configuration to new map configuration.', ) add_color_option(migrate_config_parser) _add_config_option(migrate_config_parser) run_parser = subparsers.add_parser('run', help='Run hooks.') add_color_option(run_parser) _add_config_option(run_parser) _add_run_options(run_parser) sample_config_parser = subparsers.add_parser( 'sample-config', help=f'Produce a sample {C.CONFIG_FILE} file', ) add_color_option(sample_config_parser) _add_config_option(sample_config_parser) try_repo_parser = subparsers.add_parser( 'try-repo', help='Try the hooks in a repository, useful for developing new hooks.', ) add_color_option(try_repo_parser) _add_config_option(try_repo_parser) try_repo_parser.add_argument( 'repo', help='Repository to source hooks from.', ) try_repo_parser.add_argument( '--ref', '--rev', help=( 'Manually select a rev to run against, otherwise the `HEAD` ' 'revision will be used.' ), ) _add_run_options(try_repo_parser) uninstall_parser = subparsers.add_parser( 'uninstall', help='Uninstall the pre-commit script.', ) add_color_option(uninstall_parser) _add_config_option(uninstall_parser) _add_hook_type_option(uninstall_parser) help = subparsers.add_parser( 'help', help='Show help for a specific command.', ) help.add_argument('help_cmd', nargs='?', help='Command to show help for.') # argparse doesn't really provide a way to use a `default` subparser if len(argv) == 0: argv = ['run'] args = parser.parse_args(argv) if args.command == 'help' and args.help_cmd: parser.parse_args([args.help_cmd, '--help']) elif args.command == 'help': parser.parse_args(['--help']) with error_handler(), logging_handler(args.color): if args.command not in COMMANDS_NO_GIT: _adjust_args_and_chdir(args) git.check_for_cygwin_mismatch() store = Store() store.mark_config_used(args.config) if args.command == 'autoupdate': return autoupdate( args.config, store, tags_only=not args.bleeding_edge, freeze=args.freeze, repos=args.repos, ) elif args.command == 'clean': return clean(store) elif args.command == 'gc': return gc(store) elif args.command == 'hook-impl': return hook_impl( store, config=args.config, color=args.color, hook_type=args.hook_type, hook_dir=args.hook_dir, skip_on_missing_config=args.skip_on_missing_config, args=args.rest[1:], ) elif args.command == 'install': return install( args.config, store, hook_types=args.hook_types, overwrite=args.overwrite, hooks=args.install_hooks, skip_on_missing_config=args.allow_missing_config, ) elif args.command == 'init-templatedir': return init_templatedir( args.config, store, args.directory, hook_types=args.hook_types, skip_on_missing_config=args.allow_missing_config, ) elif args.command == 'install-hooks': return install_hooks(args.config, store) elif args.command == 'migrate-config': return migrate_config(args.config) elif args.command == 'run': return run(args.config, store, args) elif args.command == 'sample-config': return sample_config() elif args.command == 'try-repo': return try_repo(args) elif args.command == 'uninstall': return uninstall(hook_types=args.hook_types) else: raise NotImplementedError( f'Command {args.command} not implemented.', ) raise AssertionError( f'Command {args.command} failed to exit with a returncode', ) if __name__ == '__main__': exit(main())