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from __future__ import annotations
import contextlib
import os.path
import shutil
import tempfile
from typing import Generator
from typing import Sequence
from pre_commit import lang_base
from pre_commit.envcontext import envcontext
from pre_commit.envcontext import PatchesT
from pre_commit.envcontext import Var
from pre_commit.prefix import Prefix
from pre_commit.util import win_exe
from pre_commit.yaml import yaml_load
ENVIRONMENT_DIR = 'dartenv'
get_default_version = lang_base.basic_get_default_version
health_check = lang_base.basic_health_check
run_hook = lang_base.basic_run_hook
def get_env_patch(venv: str) -> PatchesT:
return (
('PATH', (os.path.join(venv, 'bin'), os.pathsep, Var('PATH'))),
)
@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)):
yield
def install_environment(
prefix: Prefix,
version: str,
additional_dependencies: Sequence[str],
) -> None:
lang_base.assert_version_default('dart', version)
envdir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version)
bin_dir = os.path.join(envdir, 'bin')
def _install_dir(prefix_p: Prefix, pub_cache: str) -> None:
dart_env = {**os.environ, 'PUB_CACHE': pub_cache}
with open(prefix_p.path('pubspec.yaml')) as f:
pubspec_contents = yaml_load(f)
lang_base.setup_cmd(prefix_p, ('dart', 'pub', 'get'), env=dart_env)
for executable in pubspec_contents['executables']:
lang_base.setup_cmd(
prefix_p,
(
'dart', 'compile', 'exe',
'--output', os.path.join(bin_dir, win_exe(executable)),
prefix_p.path('bin', f'{executable}.dart'),
),
env=dart_env,
)
os.makedirs(bin_dir)
with tempfile.TemporaryDirectory() as tmp:
_install_dir(prefix, tmp)
for dep_s in additional_dependencies:
with tempfile.TemporaryDirectory() as dep_tmp:
dep, _, version = dep_s.partition(':')
if version:
dep_cmd: tuple[str, ...] = (dep, '--version', version)
else:
dep_cmd = (dep,)
lang_base.setup_cmd(
prefix,
('dart', 'pub', 'cache', 'add', *dep_cmd),
env={**os.environ, 'PUB_CACHE': dep_tmp},
)
# try and find the 'pubspec.yaml' that just got added
for root, _, filenames in os.walk(dep_tmp):
if 'pubspec.yaml' in filenames:
with tempfile.TemporaryDirectory() as copied:
pkg = os.path.join(copied, 'pkg')
shutil.copytree(root, pkg)
_install_dir(Prefix(pkg), dep_tmp)
break
else:
raise AssertionError(
f'could not find pubspec.yaml for {dep_s}',
)
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