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from __future__ import annotations
import contextlib
import functools
import importlib.resources
import os.path
import shutil
import tarfile
from typing import Generator
from typing import IO
from typing import Sequence
import pre_commit.constants as C
from pre_commit import lang_base
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.prefix import Prefix
from pre_commit.util import CalledProcessError
ENVIRONMENT_DIR = 'rbenv'
health_check = lang_base.basic_health_check
run_hook = lang_base.basic_run_hook
def _resource_bytesio(filename: str) -> IO[bytes]:
return importlib.resources.open_binary('pre_commit.resources', filename)
@functools.lru_cache(maxsize=1)
def get_default_version() -> str:
if all(lang_base.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),
(
'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'),
),
),
)
if language_version not in {'system', 'default'}: # pragma: win32 no cover
patches += (('RBENV_VERSION', language_version),)
return patches
@contextlib.contextmanager
def in_env(prefix: Prefix, version: str) -> Generator[None, None, None]:
envdir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version)
with envcontext(get_env_patch(envdir, 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
envdir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version)
_extract_resource('rbenv.tar.gz', prefix.path('.'))
shutil.move(prefix.path('rbenv'), envdir)
# Only install ruby-build if the version is specified
if version != C.DEFAULT:
plugins_dir = os.path.join(envdir, '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:
lang_base.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
lang_base.setup_cmd(prefix, ('rbenv', 'install', version))
def install_environment(
prefix: Prefix, version: str, additional_dependencies: Sequence[str],
) -> None:
envdir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version)
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
lang_base.setup_cmd(prefix, ('rbenv', 'init', '-'))
if version != C.DEFAULT:
_install_ruby(prefix, version)
# Need to call this after installing to set up the shims
lang_base.setup_cmd(prefix, ('rbenv', 'rehash'))
with in_env(prefix, version):
lang_base.setup_cmd(
prefix, ('gem', 'build', *prefix.star('.gemspec')),
)
lang_base.setup_cmd(
prefix,
(
'gem', 'install',
'--no-document', '--no-format-executable',
'--no-user-install',
'--install-dir', os.path.join(envdir, 'gems'),
'--bindir', os.path.join(envdir, 'gems', 'bin'),
*prefix.star('.gem'), *additional_dependencies,
),
)
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