mirror of
https://github.com/pre-commit/pre-commit.git
synced 2026-01-13 12:30:08 -06:00
132 lines
4.8 KiB
Python
132 lines
4.8 KiB
Python
from __future__ import unicode_literals
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import contextlib
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import io
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import os.path
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import shutil
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import tarfile
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from pre_commit.envcontext import envcontext
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from pre_commit.envcontext import Var
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from pre_commit.languages import helpers
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from pre_commit.util import CalledProcessError
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from pre_commit.util import clean_path_on_failure
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from pre_commit.util import resource_filename
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from pre_commit.xargs import xargs
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ENVIRONMENT_DIR = 'rbenv'
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def get_env_patch(venv, language_version):
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patches = (
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('GEM_HOME', os.path.join(venv, 'gems')),
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('RBENV_ROOT', venv),
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('PATH', (
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os.path.join(venv, 'gems', 'bin'), os.pathsep,
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os.path.join(venv, 'shims'), os.pathsep,
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os.path.join(venv, 'bin'), os.pathsep, Var('PATH'),
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)),
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)
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if language_version != 'default':
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patches += (('RBENV_VERSION', language_version),)
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return patches
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@contextlib.contextmanager
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def in_env(repo_cmd_runner, language_version):
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envdir = os.path.join(
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repo_cmd_runner.prefix_dir,
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helpers.environment_dir(ENVIRONMENT_DIR, language_version),
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)
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with envcontext(get_env_patch(envdir, language_version)):
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yield
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def _install_rbenv(repo_cmd_runner, version='default'):
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directory = helpers.environment_dir(ENVIRONMENT_DIR, version)
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with tarfile.open(resource_filename('rbenv.tar.gz')) as tf:
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tf.extractall(repo_cmd_runner.path('.'))
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shutil.move(
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repo_cmd_runner.path('rbenv'), repo_cmd_runner.path(directory),
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)
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# Only install ruby-build if the version is specified
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if version != 'default':
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# ruby-download
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with tarfile.open(resource_filename('ruby-download.tar.gz')) as tf:
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tf.extractall(repo_cmd_runner.path(directory, 'plugins'))
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# ruby-build
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with tarfile.open(resource_filename('ruby-build.tar.gz')) as tf:
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tf.extractall(repo_cmd_runner.path(directory, 'plugins'))
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activate_path = repo_cmd_runner.path(directory, 'bin', 'activate')
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with io.open(activate_path, 'w') as activate_file:
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# This is similar to how you would install rbenv to your home directory
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# However we do a couple things to make the executables exposed and
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# configure it to work in our directory.
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# We also modify the PS1 variable for manual debugging sake.
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activate_file.write(
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'#!/usr/bin/env bash\n'
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"export RBENV_ROOT='{directory}'\n"
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'export PATH="$RBENV_ROOT/bin:$PATH"\n'
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'eval "$(rbenv init -)"\n'
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'export PS1="(rbenv)$PS1"\n'
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# This lets us install gems in an isolated and repeatable
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# directory
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"export GEM_HOME='{directory}/gems'\n"
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'export PATH="$GEM_HOME/bin:$PATH"\n'
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'\n'.format(directory=repo_cmd_runner.path(directory))
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)
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# If we aren't using the system ruby, add a version here
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if version != 'default':
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activate_file.write('export RBENV_VERSION="{}"\n'.format(version))
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def _install_ruby(runner, version):
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try:
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helpers.run_setup_cmd(runner, ('rbenv', 'download', version))
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except CalledProcessError: # pragma: no cover (usually find with download)
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# Failed to download from mirror for some reason, build it instead
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helpers.run_setup_cmd(runner, ('rbenv', 'install', version))
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def install_environment(
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repo_cmd_runner,
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version='default',
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additional_dependencies=(),
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):
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additional_dependencies = tuple(additional_dependencies)
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directory = helpers.environment_dir(ENVIRONMENT_DIR, version)
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with clean_path_on_failure(repo_cmd_runner.path(directory)):
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# TODO: this currently will fail if there's no version specified and
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# there's no system ruby installed. Is this ok?
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_install_rbenv(repo_cmd_runner, version=version)
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with in_env(repo_cmd_runner, version):
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# Need to call this before installing so rbenv's directories are
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# set up
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helpers.run_setup_cmd(repo_cmd_runner, ('rbenv', 'init', '-'))
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if version != 'default':
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_install_ruby(repo_cmd_runner, version)
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# Need to call this after installing to set up the shims
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helpers.run_setup_cmd(repo_cmd_runner, ('rbenv', 'rehash'))
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helpers.run_setup_cmd(
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repo_cmd_runner,
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('gem', 'build') + repo_cmd_runner.star('.gemspec'),
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)
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helpers.run_setup_cmd(
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repo_cmd_runner,
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(
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('gem', 'install', '--no-ri', '--no-rdoc') +
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repo_cmd_runner.star('.gem') + additional_dependencies
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),
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)
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def run_hook(repo_cmd_runner, hook, file_args):
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with in_env(repo_cmd_runner, hook['language_version']):
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return xargs((hook['entry'],) + tuple(hook['args']), file_args)
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