mirror of
https://github.com/pre-commit/pre-commit.git
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61 lines
1.6 KiB
Python
61 lines
1.6 KiB
Python
from __future__ import unicode_literals
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import contextlib
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import distutils.spawn
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import os
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import sys
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import virtualenv
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from pre_commit.languages import helpers
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from pre_commit.util import clean_path_on_failure
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ENVIRONMENT_DIR = 'py_env'
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class PythonEnv(helpers.Environment):
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@property
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def env_prefix(self):
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return ". '{{prefix}}{0}activate' &&".format(
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virtualenv.path_locations(
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ENVIRONMENT_DIR,
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)[-1].rstrip(os.sep) + os.sep,
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'activate',
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)
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@contextlib.contextmanager
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def in_env(repo_cmd_runner):
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yield PythonEnv(repo_cmd_runner)
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def norm_version(version):
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if os.name == 'nt': # pragma: no cover (windows)
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if not distutils.spawn.find_executable(version):
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# The default place for python on windows is:
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# C:\PythonXX\python.exe
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version = r'C:\{0}\python.exe'.format(version.replace('.', ''))
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return version
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def install_environment(repo_cmd_runner, version='default'):
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assert repo_cmd_runner.exists('setup.py')
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# Install a virtualenv
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with clean_path_on_failure(repo_cmd_runner.path(ENVIRONMENT_DIR)):
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venv_cmd = [
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sys.executable, '-m', 'virtualenv',
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'{{prefix}}{0}'.format(ENVIRONMENT_DIR)
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]
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if version != 'default':
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venv_cmd.extend(['-p', norm_version(version)])
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repo_cmd_runner.run(venv_cmd)
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with in_env(repo_cmd_runner) as env:
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env.run("cd '{prefix}' && pip install .")
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def run_hook(repo_cmd_runner, hook, file_args):
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with in_env(repo_cmd_runner) as env:
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return helpers.run_hook(env, hook, file_args)
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