def include_multiple_styles(self, chosen_styles: StrOrList) -> None:
"""Include a list of styles (or just one) into this style tree."""
style_uris = [chosen_styles] if isinstance(chosen_styles, str) else chosen_styles # type: List[str]
for style_uri in style_uris:
style_path = self.get_style_path(style_uri) # type: Optional[Path]
if not style_path:
continue
toml = TOMLFormat(path=style_path)
try:
toml_dict = toml.as_data
except TomlDecodeError as err:
NitpickApp.current().add_style_error(style_path.name, pretty_exception(err, "Invalid TOML"))
# If the TOML itself could not be parsed, we can't go on
return
try:
display_name = str(style_path.relative_to(NitpickApp.current().root_dir))
except ValueError:
display_name = style_uri
self.validate_style(display_name, toml_dict)
self._all_styles.add(toml_dict)
sub_styles = search_dict(NITPICK_STYLES_INCLUDE_JMEX, toml_dict, []) # type: StrOrList
if sub_styles:
self.include_multiple_styles(sub_styles)
def test_offline_flag_env_variable(tmpdir):
"""Test if the offline flag or environment variable was set."""
with tmpdir.as_cwd():
_call_main([])
assert NitpickApp.current().offline is False
_call_main(["--nitpick-offline"])
assert NitpickApp.current().offline is True
os.environ["NITPICK_OFFLINE"] = "1"
_call_main([])
assert NitpickApp.current().offline is True
def fetch_style_from_url(self, url: str) -> Optional[Path]:
"""Fetch a style file from a URL, saving the contents in the cache dir."""
if NitpickApp.current().offline:
# No style will be fetched in offline mode
return None
if self._first_full_path and not is_url(url):
prefix, rest = self._first_full_path.split(":/")
domain_plus_url = str(rest).strip("/").rstrip("/") + "/" + url
new_url = "{}://{}".format(prefix, domain_plus_url)
else:
new_url = url
parsed_url = list(urlparse(new_url))
if not parsed_url[2].endswith(TOML_EXTENSION):
parsed_url[2] += TOML_EXTENSION
new_url = urlunparse(parsed_url)
if new_url in self._already_included:
return None
if not NitpickApp.current().cache_dir:
raise FileNotFoundError("Cache dir does not exist")
try:
response = requests.get(new_url)
except requests.ConnectionError:
click.secho(
"Your network is unreachable. Fix your connection or use {} / {}=1".format(
NitpickApp.format_flag(NitpickApp.Flags.OFFLINE), NitpickApp.format_env(NitpickApp.Flags.OFFLINE)
),
fg="red",
err=True,
)
return None
if not response.ok:
raise FileNotFoundError("Error {} fetching style URL {}".format(response, new_url))
# Save the first full path to be used by the next files without parent.
if not self._first_full_path:
self._first_full_path = new_url.rsplit("/", 1)[0]
contents = response.text
style_path = NitpickApp.current().cache_dir / "{}.toml".format(slugify(new_url))
NitpickApp.current().cache_dir.mkdir(parents=True, exist_ok=True)
style_path.write_text(contents)
LOGGER.info("Loading style from URL %s into %s", new_url, style_path)
self._already_included.add(new_url)
return style_path
def __init__(self, config: JsonDict, file_name: str = None) -> None:
if file_name is not None:
self.file_name = file_name
self.error_prefix = "File {}".format(self.file_name)
self.file_path = NitpickApp.current(
).root_dir / self.file_name # type: Path
# Configuration for this file as a TOML dict, taken from the style file.
self.file_dict = config or {} # type: JsonDict
# Nitpick configuration for this file as a TOML dict, taken from the style file.
self.nitpick_file_dict = search_dict(
'files."{}"'.format(self.file_name),
NitpickApp.current().config.nitpick_section, {}) # type: JsonDict
def merge_styles(self) -> YieldFlake8Error:
"""Merge one or multiple style files."""
if not self.validate_pyproject_tool_nitpick():
# If the project is misconfigured, don't even continue.
return
configured_styles = self.tool_nitpick_dict.get("style",
"") # type: StrOrList
style = Style()
style.find_initial_styles(configured_styles)
self.style_dict = style.merge_toml_dict()
if not NitpickApp.current().style_errors:
# Don't show duplicated errors: if there are style errors already, don't validate the merged style.
style.validate_style(MERGED_STYLE_TOML, self.style_dict)
from nitpick.flake8 import NitpickExtension # pylint: disable=import-outside-toplevel
minimum_version = search_dict(NITPICK_MINIMUM_VERSION_JMEX,
self.style_dict, None)
if minimum_version and version_to_tuple(
NitpickExtension.version) < version_to_tuple(minimum_version):
yield self.flake8_error(
3,
"The style file you're using requires {}>={}".format(
PROJECT_NAME, minimum_version) +
" (you have {}). Please upgrade".format(
NitpickExtension.version),
)
self.nitpick_section = self.style_dict.get("nitpick", {})
self.nitpick_files_section = self.nitpick_section.get("files", {})
def check_files(self, present: bool) -> YieldFlake8Error:
"""Check files that should be present or absent."""
key = "present" if present else "absent"
message = "exist" if present else "be deleted"
absent = not present
for file_name, extra_message in NitpickApp.current(
).config.nitpick_files_section.get(key, {}).items():
file_path = NitpickApp.current().root_dir / file_name # type: Path
exists = file_path.exists()
if (present and exists) or (absent and not exists):
continue
full_message = "File {} should {}".format(file_name, message)
if extra_message:
full_message += ": {}".format(extra_message)
yield self.flake8_error(3 if present else 4, full_message)
def validate_pyproject_tool_nitpick(self) -> bool:
"""Validate the ``pyroject.toml``'s ``[tool.nitpick]`` section against a Marshmallow schema."""
pyproject_path = NitpickApp.current(
).root_dir / PyProjectTomlPlugin.file_name # type: Path
if pyproject_path.exists():
self.pyproject_toml = TOMLFormat(path=pyproject_path)
self.tool_nitpick_dict = search_dict(TOOL_NITPICK_JMEX,
self.pyproject_toml.as_data,
{})
pyproject_errors = ToolNitpickSectionSchema().validate(
self.tool_nitpick_dict)
if pyproject_errors:
NitpickApp.current().add_style_error(
PyProjectTomlPlugin.file_name,
"Invalid data in [{}]:".format(TOOL_NITPICK),
flatten_marshmallow_errors(pyproject_errors),
)
return False
return True
def load_fixed_dynamic_classes(cls) -> None:
"""Separate classes with fixed file names from classes with dynamic files names."""
cls.fixed_name_classes = set()
cls.dynamic_name_classes = set()
for plugin_class in NitpickApp.current(
).plugin_manager.hook.plugin_class():
if plugin_class.file_name:
cls.fixed_name_classes.add(plugin_class)
else:
cls.dynamic_name_classes.add(plugin_class)
def validate_style(self, style_file_name: str, original_data: JsonDict):
"""Validate a style file (TOML) against a Marshmallow schema."""
self.rebuild_dynamic_schema(original_data)
style_errors = self._dynamic_schema_class().validate(original_data)
if style_errors:
has_nitpick_jsonfile_section = style_errors.get(PROJECT_NAME, {}).pop("JSONFile", None)
if has_nitpick_jsonfile_section:
warnings.warn(
"The [nitpick.JSONFile] section is not needed anymore; just declare your JSON files directly",
DeprecationWarning,
)
if not style_errors[PROJECT_NAME]:
style_errors.pop(PROJECT_NAME)
if style_errors:
NitpickApp.current().add_style_error(
style_file_name, "Invalid config:", flatten_marshmallow_errors(style_errors)
)
def parse_options(option_manager: OptionManager, options, args): # pylint: disable=unused-argument
"""Create the Nitpick app, set logging from the verbose flags, set offline mode.
This function is called only once by flake8, so it's a good place to create the app.
"""
log_mapping = {1: logging.INFO, 2: logging.DEBUG}
logging.basicConfig(
level=log_mapping.get(options.verbose, logging.WARNING))
NitpickApp.create_app(
offline=bool(options.nitpick_offline
or NitpickApp.get_env(NitpickApp.Flags.OFFLINE)))
LOGGER.info("Offline mode: %s", NitpickApp.current().offline)
def check_exists(self) -> YieldFlake8Error:
"""Check if the file should exist."""
config_data_exists = bool(self.file_dict or self.nitpick_file_dict)
should_exist = NitpickApp.current().config.nitpick_files_section.get(
TOMLFormat.group_name_for(self.file_name), True) # type: bool
file_exists = self.file_path.exists()
if config_data_exists and not file_exists:
suggestion = self.suggest_initial_contents()
phrases = [" was not found"]
message = NitpickApp.current().config.nitpick_files_section.get(
self.file_name)
if message and isinstance(message, str):
phrases.append(message)
if suggestion:
phrases.append("Create it with this content:")
yield self.flake8_error(1, ". ".join(phrases), suggestion)
elif not should_exist and file_exists:
# Only display this message if the style is valid.
if not NitpickApp.current().style_errors:
yield self.flake8_error(2, " should be deleted")
elif file_exists and config_data_exists:
yield from self.check_rules()
def find_initial_styles(self, configured_styles: StrOrList):
"""Find the initial style(s) and include them."""
if configured_styles:
chosen_styles = configured_styles
log_message = "Styles configured in {}: %s".format(PyProjectTomlPlugin.file_name)
else:
paths = climb_directory_tree(NitpickApp.current().root_dir, [NITPICK_STYLE_TOML])
if paths:
chosen_styles = str(sorted(paths)[0])
log_message = "Found style climbing the directory tree: %s"
else:
chosen_styles = self.get_default_style_url()
log_message = "Loading default Nitpick style %s"
LOGGER.info(log_message, chosen_styles)
self.include_multiple_styles(chosen_styles)
def merge_toml_dict(self) -> JsonDict:
"""Merge all included styles into a TOML (actually JSON) dictionary."""
app = NitpickApp.current()
if not app.cache_dir:
return {}
merged_dict = self._all_styles.merge()
merged_style_path = app.cache_dir / MERGED_STYLE_TOML # type: Path
toml = TOMLFormat(data=merged_dict)
attempt = 1
while attempt < 5:
try:
app.cache_dir.mkdir(parents=True, exist_ok=True)
merged_style_path.write_text(toml.reformatted)
break
except OSError:
attempt += 1
return merged_dict
def run(self) -> YieldFlake8Error:
"""Run the check plugin."""
has_errors = False
app = NitpickApp.current()
for err in app.init_errors:
has_errors = True
yield NitpickApp.as_flake8_warning(err)
if has_errors:
return []
current_python_file = Path(self.filename)
if current_python_file.absolute() != app.main_python_file.absolute():
# Only report warnings once, for the main Python file of this project.
LOGGER.debug("Ignoring file: %s", self.filename)
return []
LOGGER.debug("Nitpicking file: %s", self.filename)
yield from itertools.chain(app.config.merge_styles(),
self.check_files(True),
self.check_files(False))
has_errors = False
for err in app.style_errors:
has_errors = True
yield NitpickApp.as_flake8_warning(err)
if has_errors:
return []
# Get all root keys from the style TOML.
for path, config_dict in app.config.style_dict.items():
# All except "nitpick" are file names.
if path == PROJECT_NAME:
continue
# For each file name, find the plugin that can handle the file.
tags = identify.tags_from_filename(path)
for base_file in app.plugin_manager.hook.handle_config_file( # pylint: disable=no-member
config=config_dict,
file_name=path,
tags=tags):
yield from base_file.check_exists()
return []
def check_rules(self) -> YieldFlake8Error:
"""Check missing key/value pairs in pyproject.toml."""
if NitpickApp.current().config.pyproject_toml:
comparison = NitpickApp.current(
).config.pyproject_toml.compare_with_flatten(self.file_dict)
yield from self.warn_missing_different(comparison)
