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from __future__ import unicode_literals

import os

import os.path

from cached_property import cached_property

import pre_commit.constants as C

from pre_commit import git

from pre_commit.clientlib.validate_config import load_config

from pre_commit.repository import Repository

from pre_commit.store import Store

class Runner(object):

"""A `Runner` represents the execution context of the hooks. Notably the

repository under test.

"""

def __init__(self, git_root):

self.git_root = git_root

@classmethod

def create(cls):

"""Creates a PreCommitRunner by doing the following:

- Finds the root of the current git repository

- chdirs to that directory

"""

root = git.get_root()

os.chdir(root)

return cls(root)

@cached_property

def config_file_path(self):

return os.path.join(self.git_root, C.CONFIG_FILE)

@cached_property

def repositories(self):

"""Returns a tuple of the configured repositories."""

config = load_config(self.config_file_path)

repositories = tuple(Repository.create(x, self.store) for x in config)

for repository in repositories:

repository.require_installed()

return repositories

def get_hook_path(self, hook_type):

return os.path.join(self.git_root, '.git', 'hooks', hook_type)

@cached_property

def pre_commit_path(self):

return self.get_hook_path('pre-commit')

@cached_property

def pre_push_path(self):

return self.get_hook_path('pre-push')

@cached_property

def cmd_runner(self):

# TODO: remove this and inline runner.store.cmd_runner

return self.store.cmd_runner

@cached_property

def store(self):

return Store()

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