Local repositories clone a blank repo

pre_commit/commands/autoupdate.py

@@ -32,7 +32,7 @@ def _update_repo(repo_config, runner, tags_only):
     """
     repo = Repository.create(repo_config, runner.store)
 
-    with cwd(repo.repo_path_getter.repo_path):
+    with cwd(repo._repo_path):
         cmd_output('git', 'fetch')
         tag_cmd = ('git', 'describe', 'origin/master', '--tags')
         if tags_only:

pre_commit/manifest.py

@@ -13,15 +13,14 @@ logger = logging.getLogger('pre_commit')
 
 
 class Manifest(object):
-    def __init__(self, repo_path_getter, repo_url):
-        self.repo_path_getter = repo_path_getter
+    def __init__(self, repo_path, repo_url):
+        self.repo_path = repo_path
         self.repo_url = repo_url
 
     @cached_property
     def manifest_contents(self):
-        repo_path = self.repo_path_getter.repo_path
-        default_path = os.path.join(repo_path, C.MANIFEST_FILE)
-        legacy_path = os.path.join(repo_path, C.MANIFEST_FILE_LEGACY)
+        default_path = os.path.join(self.repo_path, C.MANIFEST_FILE)
+        legacy_path = os.path.join(self.repo_path, C.MANIFEST_FILE_LEGACY)
         if os.path.exists(legacy_path) and not os.path.exists(default_path):
             logger.warning(
                 '{} uses legacy {} to provide hooks.\n'

pre_commit/repository.py

@@ -96,40 +96,34 @@ def _install_all(venvs, repo_url):
 
 
 class Repository(object):
-    def __init__(self, repo_config, repo_path_getter):
+    def __init__(self, repo_config, store):
         self.repo_config = repo_config
-        self.repo_path_getter = repo_path_getter
+        self.store = store
         self.__installed = False
 
     @classmethod
     def create(cls, config, store):
         if is_local_hooks(config):
-            return LocalRepository(config)
+            return LocalRepository(config, store)
         else:
-            repo_path_getter = store.get_repo_path_getter(
-                config['repo'], config['sha']
-            )
-            return cls(config, repo_path_getter)
+            return cls(config, store)
+
+    @cached_property
+    def _repo_path(self):
+        return self.store.clone(
+            self.repo_config['repo'], self.repo_config['sha'],
+        )
 
     @cached_property
     def _cmd_runner(self):
-        return PrefixedCommandRunner(self.repo_path_getter.repo_path)
+        return PrefixedCommandRunner(self._repo_path)
 
-    @cached_property
-    def _venvs(self):
-        deps_dict = defaultdict(_UniqueList)
-        for _, hook in self.hooks:
-            deps_dict[(hook['language'], hook['language_version'])].update(
-                hook.get('additional_dependencies', []),
-            )
-        ret = []
-        for (language, version), deps in deps_dict.items():
-            ret.append((self._cmd_runner, language, version, deps))
-        return tuple(ret)
+    def _cmd_runner_from_deps(self, language_name, deps):
+        return self._cmd_runner
 
     @cached_property
     def manifest(self):
-        return Manifest(self.repo_path_getter, self.repo_config['repo'])
+        return Manifest(self._repo_path, self.repo_config['repo'])
 
     @cached_property
     def hooks(self):
@@ -160,6 +154,18 @@ class Repository(object):
             for hook in self.repo_config['hooks']
         )
 
+    @cached_property
+    def _venvs(self):
+        deps_dict = defaultdict(_UniqueList)
+        for _, hook in self.hooks:
+            deps_dict[(hook['language'], hook['language_version'])].update(
+                hook.get('additional_dependencies', []),
+            )
+        ret = []
+        for (language, version), deps in deps_dict.items():
+            ret.append((self._cmd_runner, language, version, deps))
+        return tuple(ret)
+
     def require_installed(self):
         if not self.__installed:
             _install_all(self._venvs, self.repo_config['repo'])
@@ -168,19 +174,30 @@ class Repository(object):
     def run_hook(self, hook, file_args):
         """Run a hook.
 
-        Args:
-            hook - Hook dictionary
-            file_args - List of files to run
+        :param dict hook:
+        :param tuple file_args: all the files to run the hook on
         """
         self.require_installed()
-        return languages[hook['language']].run_hook(
-            self._cmd_runner, hook, file_args,
-        )
+        language_name = hook['language']
+        deps = hook.get('additional_dependencies', [])
+        cmd_runner = self._cmd_runner_from_deps(language_name, deps)
+        return languages[language_name].run_hook(cmd_runner, hook, file_args)
 
 
 class LocalRepository(Repository):
-    def __init__(self, repo_config):
-        super(LocalRepository, self).__init__(repo_config, None)
+    def _cmd_runner_from_deps(self, language_name, deps):
+        """local repositories have a cmd runner per hook"""
+        language = languages[language_name]
+        # pcre / script / system do not have environments so they work out
+        # of the current directory
+        if language.ENVIRONMENT_DIR is None:
+            return PrefixedCommandRunner(git.get_root())
+        else:
+            return PrefixedCommandRunner(self.store.make_local(deps))
+
+    @cached_property
+    def manifest(self):
+        raise NotImplementedError
 
     @cached_property
     def hooks(self):
@@ -190,12 +207,17 @@ class LocalRepository(Repository):
         )
 
     @cached_property
-    def cmd_runner(self):
-        return PrefixedCommandRunner(git.get_root())
-
-    @cached_property
-    def manifest(self):
-        raise NotImplementedError
+    def _venvs(self):
+        ret = []
+        for _, hook in self.hooks:
+            language = hook['language']
+            version = hook['language_version']
+            deps = hook.get('additional_dependencies', [])
+            ret.append((
+                self._cmd_runner_from_deps(language, deps),
+                language, version, deps,
+            ))
+        return tuple(ret)
 
 
 class _UniqueList(list):

pre_commit/resources/empty_template/.npmignore

@@ -0,0 +1 @@
+*

pre_commit/resources/empty_template/main.go

@@ -0,0 +1,3 @@
+package main
+
+func main() {}

pre_commit/resources/empty_template/package.json

@@ -0,0 +1,4 @@
+{
+    "name": "pre_commit_dummy_package",
+    "version": "0.0.0"
+}

pre_commit/resources/empty_template/pre_commit_dummy_package.gemspec

@@ -0,0 +1,5 @@
+Gem::Specification.new do |s|
+    s.name = 'pre_commit_dummy_package'
+    s.version = '0.0.0'
+    s.authors = ['Anthony Sottile']
+end

pre_commit/resources/empty_template/setup.py

@@ -0,0 +1,4 @@
+from setuptools import setup
+
+
+setup(name='pre-commit-dummy-package', version='0.0.0')

pre_commit/store.py

@@ -12,8 +12,10 @@ from cached_property import cached_property
 from pre_commit.prefixed_command_runner import PrefixedCommandRunner
 from pre_commit.util import clean_path_on_failure
 from pre_commit.util import cmd_output
+from pre_commit.util import copy_tree_to_path
 from pre_commit.util import cwd
 from pre_commit.util import no_git_env
+from pre_commit.util import resource_filename
 
 
 logger = logging.getLogger('pre_commit')
@@ -35,16 +37,6 @@ def _get_default_directory():
 class Store(object):
     get_default_directory = staticmethod(_get_default_directory)
 
-    class RepoPathGetter(object):
-        def __init__(self, repo, ref, store):
-            self._repo = repo
-            self._ref = ref
-            self._store = store
-
-        @cached_property
-        def repo_path(self):
-            return self._store.clone(self._repo, self._ref)
-
     def __init__(self, directory=None):
         if directory is None:
             directory = self.get_default_directory()
@@ -91,45 +83,55 @@ class Store(object):
 
     def require_created(self):
         """Require the pre-commit file store to be created."""
-        if self.__created:
-            return
+        if not self.__created:
+            self._create()
+            self.__created = True
 
-        self._create()
-        self.__created = True
-
-    def clone(self, url, ref):
-        """Clone the given url and checkout the specific ref."""
+    def _new_repo(self, repo, ref, make_strategy):
         self.require_created()
 
         # Check if we already exist
         with sqlite3.connect(self.db_path) as db:
             result = db.execute(
                 'SELECT path FROM repos WHERE repo = ? AND ref = ?',
-                [url, ref],
+                [repo, ref],
             ).fetchone()
             if result:
                 return result[0]
 
-        logger.info('Initializing environment for {}.'.format(url))
+        logger.info('Initializing environment for {}.'.format(repo))
 
-        dir = tempfile.mkdtemp(prefix='repo', dir=self.directory)
-        with clean_path_on_failure(dir):
-            cmd_output(
-                'git', 'clone', '--no-checkout', url, dir, env=no_git_env(),
-            )
-            with cwd(dir):
-                cmd_output('git', 'reset', ref, '--hard', env=no_git_env())
+        directory = tempfile.mkdtemp(prefix='repo', dir=self.directory)
+        with clean_path_on_failure(directory):
+            make_strategy(directory)
 
         # Update our db with the created repo
         with sqlite3.connect(self.db_path) as db:
             db.execute(
                 'INSERT INTO repos (repo, ref, path) VALUES (?, ?, ?)',
-                [url, ref, dir],
+                [repo, ref, directory],
             )
-        return dir
+        return directory
 
-    def get_repo_path_getter(self, repo, ref):
-        return self.RepoPathGetter(repo, ref, self)
+    def clone(self, repo, ref):
+        """Clone the given url and checkout the specific ref."""
+        def clone_strategy(directory):
+            cmd_output(
+                'git', 'clone', '--no-checkout', repo, directory,
+                env=no_git_env(),
+            )
+            with cwd(directory):
+                cmd_output('git', 'reset', ref, '--hard', env=no_git_env())
+
+        return self._new_repo(repo, ref, clone_strategy)
+
+    def make_local(self, deps):
+        def make_local_strategy(directory):
+            copy_tree_to_path(resource_filename('empty_template'), directory)
+        return self._new_repo(
+            'local:{}'.format(','.join(sorted(deps))), 'N/A',
+            make_local_strategy,
+        )
 
     @cached_property
     def cmd_runner(self):

pre_commit/util.py

@@ -204,3 +204,21 @@ def rmtree(path):
         else:
             raise
     shutil.rmtree(path, ignore_errors=False, onerror=handle_remove_readonly)
+
+
+def copy_tree_to_path(src_dir, dest_dir):
+    """Copies all of the things inside src_dir to an already existing dest_dir.
+
+    This looks eerily similar to shutil.copytree, but copytree has no option
+    for not creating dest_dir.
+    """
+    names = os.listdir(src_dir)
+
+    for name in names:
+        srcname = os.path.join(src_dir, name)
+        destname = os.path.join(dest_dir, name)
+
+        if os.path.isdir(srcname):
+            shutil.copytree(srcname, destname)
+        else:
+            shutil.copy(srcname, destname)