forked from VimPlug/jedi
223 lines
7.9 KiB
Python
223 lines
7.9 KiB
Python
import os
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import json
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from jedi._compatibility import FileNotFoundError, PermissionError, IsADirectoryError
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from jedi.api.environment import SameEnvironment, \
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get_cached_default_environment, get_system_environment, create_environment
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from jedi.api.exceptions import WrongVersion
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from jedi._compatibility import force_unicode
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from jedi.inference.sys_path import discover_buildout_paths
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from jedi.inference.cache import inference_state_as_method_param_cache
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from jedi.common.utils import traverse_parents
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_CONFIG_FOLDER = '.jedi'
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_CONTAINS_POTENTIAL_PROJECT = 'setup.py', '.git', '.hg', 'requirements.txt', 'MANIFEST.in'
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_SERIALIZER_VERSION = 1
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def _remove_duplicates_from_path(path):
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used = set()
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for p in path:
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if p in used:
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continue
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used.add(p)
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yield p
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def _force_unicode_list(lst):
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return list(map(force_unicode, lst))
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class Project(object):
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_environment = None
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@staticmethod
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def _get_json_path(base_path):
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return os.path.join(base_path, _CONFIG_FOLDER, 'project.json')
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@classmethod
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def load(cls, path):
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"""
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:param path: The path of the directory you want to use as a project.
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"""
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with open(cls._get_json_path(path)) as f:
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version, data = json.load(f)
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if version == 1:
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self = cls.__new__()
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self.__dict__.update(data)
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return self
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else:
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raise WrongVersion(
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"The Jedi version of this project seems newer than what we can handle."
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)
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def __init__(self, path, **kwargs):
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"""
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:param path: The base path for this project.
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:param python_path: The Python executable path, typically the path of a
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virtual environment.
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:param python_version: The version string of the Python environment to
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be loaded, e.g. `"3"` or `"3.8"`.
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:param sys_path: list of str. You can override the sys path if you
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want. By default the ``sys.path.`` is generated from the
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environment (virtualenvs, etc).
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:param added_sys_path: list of str. Adds these paths at the end of the
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sys path.
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:param smart_sys_path: If this is enabled (default), adds paths from
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local directories. Otherwise you will have to rely on your packages
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being properly configured on the ``sys.path``.
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"""
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def py2_comp(path, python_path=None, python_version=None, sys_path=None,
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added_sys_path=True, smart_sys_path=True):
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if python_version is not None and python_path is not None:
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raise ValueError('You cannot use both python_version and python_path')
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self._path = os.path.abspath(path)
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self._python_path = python_path
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self._python_version = python_version
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self._sys_path = sys_path
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self._smart_sys_path = smart_sys_path
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self._django = False
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self.added_sys_path = []
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"""The sys path that is going to be added at the end of the """
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py2_comp(path, **kwargs)
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@inference_state_as_method_param_cache()
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def _get_base_sys_path(self, inference_state, environment=None):
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if self._sys_path is not None:
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return self._sys_path
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# The sys path has not been set explicitly.
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if environment is None:
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environment = self.get_environment()
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sys_path = list(environment.get_sys_path())
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try:
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sys_path.remove('')
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except ValueError:
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pass
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return sys_path + self.added_sys_path
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@inference_state_as_method_param_cache()
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def _get_sys_path(self, inference_state, environment=None,
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add_parent_paths=True, add_init_paths=False):
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"""
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Keep this method private for all users of jedi. However internally this
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one is used like a public method.
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"""
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suffixed = []
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prefixed = []
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sys_path = list(self._get_base_sys_path(inference_state, environment))
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if self._smart_sys_path:
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prefixed.append(self._path)
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if inference_state.script_path is not None:
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suffixed += discover_buildout_paths(inference_state, inference_state.script_path)
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if add_parent_paths:
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# Collect directories in upward search by:
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# 1. Skipping directories with __init__.py
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# 2. Stopping immediately when above self._path
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traversed = []
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for parent_path in traverse_parents(inference_state.script_path):
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if not parent_path.startswith(self._path):
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break
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if not add_init_paths \
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and os.path.isfile(os.path.join(parent_path, "__init__.py")):
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continue
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traversed.append(parent_path)
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# AFAIK some libraries have imports like `foo.foo.bar`, which
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# leads to the conclusion to by default prefer longer paths
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# rather than shorter ones by default.
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suffixed += reversed(traversed)
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if self._django:
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prefixed.append(self._path)
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path = prefixed + sys_path + suffixed
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return list(_force_unicode_list(_remove_duplicates_from_path(path)))
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def save(self):
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data = dict(self.__dict__)
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data.pop('_environment', None)
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data = {k.lstrip('_'): v for k, v in data.items()}
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with open(self._get_json_path(self._path), 'wb') as f:
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return json.dump((_SERIALIZER_VERSION, data), f)
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def get_environment(self):
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if self._environment is None:
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if self._python_path is not None:
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self._environment = create_environment(self._python_path, safe=False)
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elif self._python_version is not None:
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self._environment = get_system_environment(self._python_version)
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else:
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self._environment = get_cached_default_environment()
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return self._environment
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def __repr__(self):
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return '<%s: %s>' % (self.__class__.__name__, self._path)
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def _is_potential_project(path):
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for name in _CONTAINS_POTENTIAL_PROJECT:
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if os.path.exists(os.path.join(path, name)):
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return True
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return False
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def _is_django_path(directory):
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""" Detects the path of the very well known Django library (if used) """
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try:
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with open(os.path.join(directory, 'manage.py'), 'rb') as f:
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return b"DJANGO_SETTINGS_MODULE" in f.read()
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except (FileNotFoundError, IsADirectoryError, PermissionError):
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return False
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return False
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def get_default_project(path=None):
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if path is None:
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path = os.getcwd()
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check = os.path.realpath(path)
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probable_path = None
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first_no_init_file = None
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for dir in traverse_parents(check, include_current=True):
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try:
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return Project.load(dir)
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except (FileNotFoundError, IsADirectoryError, PermissionError):
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pass
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if first_no_init_file is None:
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if os.path.exists(os.path.join(dir, '__init__.py')):
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# In the case that a __init__.py exists, it's in 99% just a
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# Python package and the project sits at least one level above.
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continue
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else:
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first_no_init_file = dir
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if _is_django_path(dir):
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project = Project(dir)
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project._django = True
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return project
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if probable_path is None and _is_potential_project(dir):
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probable_path = dir
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if probable_path is not None:
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# TODO search for setup.py etc
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return Project(probable_path)
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if first_no_init_file is not None:
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return Project(first_no_init_file)
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curdir = path if os.path.isdir(path) else os.path.dirname(path)
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return Project(curdir)
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