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import contextlib

import os.path

import sys

from typing import Generator

from typing import Sequence

from typing import Tuple

import pre_commit.constants as C

from pre_commit import git

from pre_commit.envcontext import envcontext

from pre_commit.envcontext import PatchesT

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 clean_path_on_failure

from pre_commit.util import cmd_output

from pre_commit.util import cmd_output_b

from pre_commit.util import rmtree

ENVIRONMENT_DIR = 'golangenv'

get_default_version = helpers.basic_get_default_version

healthy = helpers.basic_healthy

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) -> Generator[None, None, None]:

envdir = prefix.path(

helpers.environment_dir(ENVIRONMENT_DIR, C.DEFAULT),

)

with envcontext(get_env_patch(envdir)):

yield

def guess_go_dir(remote_url: str) -> str:

if remote_url.endswith('.git'):

remote_url = remote_url[:-1 * len('.git')]

looks_like_url = (

not remote_url.startswith('file://') and

('//' in remote_url or '@' in remote_url)

)

remote_url = remote_url.replace(':', '/')

if looks_like_url:

_, _, remote_url = remote_url.rpartition('//')

_, _, remote_url = remote_url.rpartition('@')

return remote_url

else:

return 'unknown_src_dir'

def install_environment(

prefix: Prefix,

version: str,

additional_dependencies: Sequence[str],

) -> None:

helpers.assert_version_default('golang', version)

directory = prefix.path(

helpers.environment_dir(ENVIRONMENT_DIR, C.DEFAULT),

)

with clean_path_on_failure(directory):

remote = git.get_remote_url(prefix.prefix_dir)

repo_src_dir = os.path.join(directory, 'src', guess_go_dir(remote))

# Clone into the goenv we'll create

helpers.run_setup_cmd(prefix, ('git', 'clone', '.', repo_src_dir))

if sys.platform == 'cygwin': # pragma: no cover

_, gopath, _ = cmd_output('cygpath', '-w', directory)

gopath = gopath.strip()

else:

gopath = directory

env = dict(os.environ, GOPATH=gopath)

env.pop('GOBIN', None)

cmd_output_b('go', 'get', './...', cwd=repo_src_dir, env=env)

for dependency in additional_dependencies:

cmd_output_b('go', 'get', dependency, cwd=repo_src_dir, env=env)

# Same some disk space, we don't need these after installation

rmtree(prefix.path(directory, 'src'))

pkgdir = prefix.path(directory, 'pkg')

if os.path.exists(pkgdir): # pragma: no cover (go<1.10)

rmtree(pkgdir)

def run_hook(

hook: Hook,

file_args: Sequence[str],

color: bool,

) -> Tuple[int, bytes]:

with in_env(hook.prefix):

return helpers.run_xargs(hook, hook.cmd, file_args, color=color)

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