mirror of
https://github.com/pre-commit/pre-commit.git
synced 2026-02-18 00:24:47 +04:00
7d323a5c29
GN is a meta-build system that generates build files for Ninja See also https://gn.googlesource.com/gn/
101 lines
2.7 KiB
Python
101 lines
2.7 KiB
Python
from __future__ import annotations
|
|
|
|
import contextlib
|
|
import functools
|
|
import os.path
|
|
import platform
|
|
import shutil
|
|
import tempfile
|
|
import urllib.error
|
|
import urllib.request
|
|
import zipfile
|
|
from collections.abc import Generator
|
|
from collections.abc import Sequence
|
|
from typing import ContextManager
|
|
from typing import IO
|
|
|
|
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 Var
|
|
from pre_commit.prefix import Prefix
|
|
from pre_commit.util import make_executable
|
|
|
|
ENVIRONMENT_DIR = 'gn_env'
|
|
health_check = lang_base.basic_health_check
|
|
run_hook = lang_base.basic_run_hook
|
|
|
|
_ARCH_ALIASES = {
|
|
'x86_64': 'amd64',
|
|
'aarch64': 'arm64',
|
|
'armv8': 'arm64',
|
|
}
|
|
_ARCH = platform.machine().lower()
|
|
_ARCH = _ARCH_ALIASES.get(_ARCH, _ARCH)
|
|
|
|
|
|
def _open_archive(bio: IO[bytes]) -> ContextManager[zipfile.ZipFile]:
|
|
return zipfile.ZipFile(bio)
|
|
|
|
|
|
def _get_gn_url() -> str:
|
|
os_name = platform.system().lower()
|
|
if os_name == 'linux':
|
|
os_name = 'linux-' + _ARCH
|
|
elif os_name == 'darwin':
|
|
os_name = 'mac-' + _ARCH
|
|
elif os_name == 'windows':
|
|
os_name = 'windows-' + _ARCH
|
|
return 'https://chrome-infra-packages.appspot.com/dl/gn/gn/' + \
|
|
f'{os_name}/+/latest'
|
|
|
|
|
|
def _install_gn(dest: str) -> None:
|
|
try:
|
|
resp = urllib.request.urlopen(_get_gn_url())
|
|
except urllib.error.HTTPError as e: # pragma: no cover
|
|
os_name = platform.system().lower()
|
|
raise ValueError(
|
|
f'Could not find GN for your system (os={os_name}; arch={_ARCH})',
|
|
) from e
|
|
else:
|
|
with tempfile.TemporaryFile() as f:
|
|
shutil.copyfileobj(resp, f)
|
|
f.seek(0)
|
|
with _open_archive(f) as archive:
|
|
archive.extractall(dest)
|
|
make_executable(f'{dest}/gn')
|
|
|
|
|
|
@functools.lru_cache(maxsize=1)
|
|
def get_default_version() -> str:
|
|
if lang_base.exe_exists('gn'):
|
|
return 'system'
|
|
else:
|
|
return C.DEFAULT
|
|
|
|
|
|
def get_env_patch(venv: str, version: str) -> PatchesT:
|
|
if version == 'system':
|
|
return ()
|
|
|
|
return (('PATH', (venv, os.pathsep, Var('PATH'))),)
|
|
|
|
|
|
@contextlib.contextmanager
|
|
def in_env(prefix: Prefix, version: str) -> Generator[None, None, None]:
|
|
env_dir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version)
|
|
with envcontext(get_env_patch(env_dir, version)):
|
|
yield
|
|
|
|
|
|
def install_environment(
|
|
prefix: Prefix,
|
|
version: str,
|
|
additional_dependencies: Sequence[str],
|
|
) -> None:
|
|
if version == 'system':
|
|
return
|
|
env_dir = lang_base.environment_dir(prefix, ENVIRONMENT_DIR, version)
|
|
_install_gn(env_dir)
|