import contextlib import functools import os.path import shutil import tarfile from typing import Generator from typing import Sequence from typing import Tuple import pre_commit.constants as C from pre_commit.envcontext import envcontext from pre_commit.envcontext import PatchesT from pre_commit.envcontext import UNSET from pre_commit.envcontext import Var from pre_commit.hook import Hook from pre_commit.languages import helpers from pre_commit.prefix import Prefix from pre_commit.util import CalledProcessError from pre_commit.util import clean_path_on_failure from pre_commit.util import resource_bytesio ENVIRONMENT_DIR = 'rbenv' healthy = helpers.basic_healthy @functools.lru_cache(maxsize=1) def get_default_version() -> str: if all(helpers.exe_exists(exe) for exe in ('ruby', 'gem')): return 'system' else: return C.DEFAULT def get_env_patch( venv: str, language_version: str, ) -> PatchesT: patches: PatchesT = ( ('GEM_HOME', os.path.join(venv, 'gems')), ('GEM_PATH', UNSET), ('BUNDLE_IGNORE_CONFIG', '1'), ) if language_version == 'system': patches += ( ( 'PATH', ( os.path.join(venv, 'gems', 'bin'), os.pathsep, Var('PATH'), ), ), ) else: # pragma: win32 no cover patches += ( ('RBENV_ROOT', venv), ('RBENV_VERSION', language_version), ( 'PATH', ( os.path.join(venv, 'gems', 'bin'), os.pathsep, os.path.join(venv, 'shims'), os.pathsep, os.path.join(venv, 'bin'), os.pathsep, Var('PATH'), ), ), ) return patches @contextlib.contextmanager def in_env( prefix: Prefix, language_version: str, ) -> Generator[None, None, None]: envdir = prefix.path( helpers.environment_dir(ENVIRONMENT_DIR, language_version), ) with envcontext(get_env_patch(envdir, language_version)): yield def _extract_resource(filename: str, dest: str) -> None: with resource_bytesio(filename) as bio: with tarfile.open(fileobj=bio) as tf: tf.extractall(dest) def _install_rbenv( prefix: Prefix, version: str, ) -> None: # pragma: win32 no cover directory = helpers.environment_dir(ENVIRONMENT_DIR, version) _extract_resource('rbenv.tar.gz', prefix.path('.')) shutil.move(prefix.path('rbenv'), prefix.path(directory)) # Only install ruby-build if the version is specified if version != C.DEFAULT: plugins_dir = prefix.path(directory, 'plugins') _extract_resource('ruby-download.tar.gz', plugins_dir) _extract_resource('ruby-build.tar.gz', plugins_dir) def _install_ruby( prefix: Prefix, version: str, ) -> None: # pragma: win32 no cover try: helpers.run_setup_cmd(prefix, ('rbenv', 'download', version)) except CalledProcessError: # pragma: no cover (usually find with download) # Failed to download from mirror for some reason, build it instead helpers.run_setup_cmd(prefix, ('rbenv', 'install', version)) def install_environment( prefix: Prefix, version: str, additional_dependencies: Sequence[str], ) -> None: additional_dependencies = tuple(additional_dependencies) directory = helpers.environment_dir(ENVIRONMENT_DIR, version) with clean_path_on_failure(prefix.path(directory)): if version != 'system': # pragma: win32 no cover _install_rbenv(prefix, version) with in_env(prefix, version): # Need to call this before installing so rbenv's directories # are set up helpers.run_setup_cmd(prefix, ('rbenv', 'init', '-')) if version != C.DEFAULT: _install_ruby(prefix, version) # Need to call this after installing to set up the shims helpers.run_setup_cmd(prefix, ('rbenv', 'rehash')) with in_env(prefix, version): helpers.run_setup_cmd( prefix, ('gem', 'build', *prefix.star('.gemspec')), ) helpers.run_setup_cmd( prefix, ( 'gem', 'install', '--no-document', '--no-format-executable', *prefix.star('.gem'), *additional_dependencies, ), ) def run_hook( hook: Hook, file_args: Sequence[str], color: bool, ) -> Tuple[int, bytes]: with in_env(hook.prefix, hook.language_version): return helpers.run_xargs(hook, hook.cmd, file_args, color=color)