regiments.core.Regiment.__getattr__() - Code Metrics - IL2HorusTeam/il2fb-regiments - Measure and Improve Code Quality continuously with Scrutinizer

regiments.core.Regiment.getattr() A
last analyzed 2020-12-04 18:09 UTC

↳ Parent: regiments.core

Complexity

Conditions

Size

Total Lines	20
Code Lines	14

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
eloc	14
dl	0
loc	20
rs	9.2333
c	0
b	0
f	0
cc	5
nop	2

import sys

if sys.version_info >= (3, 9):
  from collections.abc import Callable

  Dict = dict
  List = list

else:
  from typing import Callable
  from typing import Dict
  from typing import List

from pathlib import Path

from typing import Any
from typing import Optional

from verboselib import get_language

from il2fb.commons.air_forces import AirForceConstant
from il2fb.commons.air_forces import AIR_FORCES

from il2fb.commons.supported_languages import SUPPORTED_LANGUAGES

from .exceptions import IL2FBRegimentAttributeError
from .exceptions import IL2FBRegimentDataSourceNotFound
from .exceptions import IL2FBRegimentLookupError

from ._utils import export


__here__ = Path(__file__).absolute().parent


DEFAULT_LANGUAGE_NAME = SUPPORTED_LANGUAGES.get_default().name

DEFAULT_DATA_DIR_PATH = __here__ / "data"
DEFAULT_DATA_MISSING_VALUE = None
DEFAULT_DATA_FILE_ENCODING = "cp1251"
DEFAULT_VALUE_ENCODING = "unicode-escape"

DEFAULT_CATALOG_FILE_NAME = "regiments.ini"

DEFAULT_NAMES_FILE_NAME_FORMAT        = "regShort_{language}.properties"
DEFAULT_DESCRIPTIONS_FILE_NAME_FORMAT = "regInfo_{language}.properties"

DEFAULT_REGIMENTS_IDS = frozenset(AIR_FORCES.get_default_regiment_ids())


@export
class RegimentInfoLoader:

  def __init__(
    self,
    data_dir_path: Path=DEFAULT_DATA_DIR_PATH,
    data_file_encoding: str=DEFAULT_DATA_FILE_ENCODING,
    data_value_encoding: str=DEFAULT_VALUE_ENCODING,
    data_missing_value: str=DEFAULT_DATA_MISSING_VALUE,
    names_file_name_format: str=DEFAULT_NAMES_FILE_NAME_FORMAT,
    descriptions_file_name_format: str=DEFAULT_DESCRIPTIONS_FILE_NAME_FORMAT,
  ):
    self._data_dir_path = data_dir_path
    self._data_file_encoding = data_file_encoding
    self._data_value_encoding = data_value_encoding
    self._data_missing_value = data_missing_value
    self._names_file_name_format = names_file_name_format
    self._descriptions_file_name_format = descriptions_file_name_format

  def get_name(self, regiment_id: str, language: Any) -> str:
    return self._get_value(regiment_id, self._names_file_name_format, language)

  def get_description(self, regiment_id: str, language: Any) -> str:
    return self._get_value(regiment_id, self._descriptions_file_name_format, language)

  def _get_value(self, regiment_id: str, file_name_format: str, language: Any) -> str:
    language  = language and language.lower()
    file_name = file_name_format.format(language=language)
    file_path = self._data_dir_path / file_name
    try:
      return self._load_value_or_raise(regiment_id, file_path)
    except IL2FBRegimentLookupError:
      return self._data_missing_value

  def _load_value_or_raise(self, regiment_id: str, file_path: Path) -> str:
    if not file_path.exists():
      raise IL2FBRegimentDataSourceNotFound

    with file_path.open(mode="rb") as f:
      regiment_id = regiment_id.encode(self._data_file_encoding)
      for line in f:
        if line.startswith(regiment_id):
          key, value = line.split(maxsplit=1)
          return value.decode(self._data_value_encoding).strip()
      else:
        raise IL2FBRegimentLookupError


@export
class Regiment:

  def __init__(
    self,
    id:          str,
    air_force:   AirForceConstant,
    info_loader: Optional[RegimentInfoLoader]=None,
  ):
    self.id        = id
    self.air_force = air_force

    self._info_loader = info_loader or RegimentInfoLoader()
    self._text_attribute_loaders = {
      'verbose_name': self._info_loader.get_name,
      'help_text':    self._info_loader.get_description,
    }

  def __getattr__(self, name: str) -> str:
    loader = self._text_attribute_loaders.get(name)
    if not loader:
      raise IL2FBRegimentAttributeError(
        f"'{self.__class__}' object has no attribute '{name}'"
      )

    language = get_language()
    if language and language.upper() not in SUPPORTED_LANGUAGES:
      language = DEFAULT_LANGUAGE_NAME

    full_name = f"{name}_{language}"

    value = getattr(self, full_name, None)

    if not value:
      value = self._load_value(loader, language)
      setattr(self, full_name, value)

    return value

  def _load_value(
    self,
    loader:   Callable[[str, Any], str],
    language: Any,
  ) -> str:

    value = loader(regiment_id=self.id, language=language)

    if not value and language != DEFAULT_LANGUAGE_NAME:
      value = loader(regiment_id=self.id, language=DEFAULT_LANGUAGE_NAME)

    return value

  def to_primitive(self, context: Any=None) -> Dict[str, Any]:
    return {
      'id':           self.id,
      'air_force':    self.air_force.to_primitive(context),
      'verbose_name': self.verbose_name,
      'help_text':    self.help_text,
    }

  def __repr__(self) -> str:
    return f"<{self.__class__.__name__} '{self.id}'>"


@export
class Regiments:

  def __init__(
    self,
    data_dir_path:      Path=DEFAULT_DATA_DIR_PATH,
    data_file_name:     str=DEFAULT_CATALOG_FILE_NAME,
    data_file_encoding: str=DEFAULT_DATA_FILE_ENCODING,
    info_loader:        RegimentInfoLoader=None,
  ):
    self._data_file_path = data_dir_path / data_file_name
    if not self._data_file_path.exists():
      raise IL2FBRegimentDataSourceNotFound(
        f"data source file '{str(self._data_file_path)}' does not exist"
      )

    self._data_file_encoding = data_file_encoding

    self._info_loader = info_loader or RegimentInfoLoader(
      data_dir_path=data_dir_path,
      data_file_encoding=data_file_encoding,
    )

    self._cache = dict()

  def get_by_id(self, id: str) -> Regiment:
    regiment = self._cache.get(id)

    if not regiment:
      regiment = self._load_by_id_or_raise(id)
      self._cache[id] = regiment

    return regiment

  def _load_by_id_or_raise(self, id: str) -> Regiment:
    default_regiment_id = self._get_default_regiment_id_for_regiment(id)
    if not default_regiment_id:
      raise IL2FBRegimentLookupError(
        f"regiment with id '{id}' not found"
      )

    air_force = AIR_FORCES.get_by_default_regiment_id(default_regiment_id)

    return Regiment(
      id=id,
      air_force=air_force,
      info_loader=self._info_loader,
    )

  def _get_default_regiment_id_for_regiment(self, id: str) -> Optional[str]:
    with self._data_file_path.open(
      mode="rt",
      encoding=self._data_file_encoding,
      buffering=1,
    ) as f:

      default_regiment_id = None

      for line in f:
        line = line.strip()
        if not line:
          continue

        if line in DEFAULT_REGIMENTS_IDS:
          default_regiment_id = line

        elif line == id:
          return default_regiment_id

  def filter_by_air_force(self, air_force: AirForceConstant) -> List[Regiment]:
    result = []

    with self._data_file_path.open(
      mode="rt",
      encoding=self._data_file_encoding,
      buffering=1,
    ) as f:

      default_regiment_id = air_force.default_regiment_id
      air_force_is_found = False

      for line in f:
        line = line.strip()

        if not line:
          continue

        if line == default_regiment_id:
          air_force_is_found = True

        elif air_force_is_found:
          if (
             line in DEFAULT_REGIMENTS_IDS or
            (line.startswith('[') and line.endswith(']'))
          ):
            # Next section was found. Fullstop.
            break

          regiment = self._cache.get(line)
          if not regiment:
            regiment = Regiment(
              id=line,
              air_force=air_force,
              info_loader=self._info_loader,
            )
            self._cache[line] = regiment

          result.append(regiment)

    return result


1			import sys
2
3			if sys.version_info >= (3, 9):
4			from collections.abc import Callable
5
6			Dict = dict
7			List = list
8
9			else:
10			from typing import Callable
11			from typing import Dict
12			from typing import List
13
14			from pathlib import Path
15
16			from typing import Any
17			from typing import Optional
18
19			from verboselib import get_language
20
21			from il2fb.commons.air_forces import AirForceConstant
22			from il2fb.commons.air_forces import AIR_FORCES
23
24			from il2fb.commons.supported_languages import SUPPORTED_LANGUAGES
25
26			from .exceptions import IL2FBRegimentAttributeError
27			from .exceptions import IL2FBRegimentDataSourceNotFound
28			from .exceptions import IL2FBRegimentLookupError
29
30			from ._utils import export
31
32
33			__here__ = Path(__file__).absolute().parent
34
35
36			DEFAULT_LANGUAGE_NAME = SUPPORTED_LANGUAGES.get_default().name
37
38			DEFAULT_DATA_DIR_PATH = __here__ / "data"
39			DEFAULT_DATA_MISSING_VALUE = None
40			DEFAULT_DATA_FILE_ENCODING = "cp1251"
41			DEFAULT_VALUE_ENCODING = "unicode-escape"
42
43			DEFAULT_CATALOG_FILE_NAME = "regiments.ini"
44
45			DEFAULT_NAMES_FILE_NAME_FORMAT = "regShort_{language}.properties"
46			DEFAULT_DESCRIPTIONS_FILE_NAME_FORMAT = "regInfo_{language}.properties"
47
48			DEFAULT_REGIMENTS_IDS = frozenset(AIR_FORCES.get_default_regiment_ids())
49
50
51			@export
52			class RegimentInfoLoader:
53
54			def __init__(
55			self,
56			data_dir_path: Path=DEFAULT_DATA_DIR_PATH,
57			data_file_encoding: str=DEFAULT_DATA_FILE_ENCODING,
58			data_value_encoding: str=DEFAULT_VALUE_ENCODING,
59			data_missing_value: str=DEFAULT_DATA_MISSING_VALUE,
60			names_file_name_format: str=DEFAULT_NAMES_FILE_NAME_FORMAT,
61			descriptions_file_name_format: str=DEFAULT_DESCRIPTIONS_FILE_NAME_FORMAT,
62			):
63			self._data_dir_path = data_dir_path
64			self._data_file_encoding = data_file_encoding
65			self._data_value_encoding = data_value_encoding
66			self._data_missing_value = data_missing_value
67			self._names_file_name_format = names_file_name_format
68			self._descriptions_file_name_format = descriptions_file_name_format
69
70			def get_name(self, regiment_id: str, language: Any) -> str:
71			return self._get_value(regiment_id, self._names_file_name_format, language)
72
73			def get_description(self, regiment_id: str, language: Any) -> str:
74			return self._get_value(regiment_id, self._descriptions_file_name_format, language)
75
76			def _get_value(self, regiment_id: str, file_name_format: str, language: Any) -> str:
77			language = language and language.lower()
78			file_name = file_name_format.format(language=language)
79			file_path = self._data_dir_path / file_name
80			try:
81			return self._load_value_or_raise(regiment_id, file_path)
82			except IL2FBRegimentLookupError:
83			return self._data_missing_value
84
85			def _load_value_or_raise(self, regiment_id: str, file_path: Path) -> str:
86			if not file_path.exists():
87			raise IL2FBRegimentDataSourceNotFound
88
89			with file_path.open(mode="rb") as f:
90			regiment_id = regiment_id.encode(self._data_file_encoding)
91			for line in f:
92			if line.startswith(regiment_id):
93			key, value = line.split(maxsplit=1)
94			return value.decode(self._data_value_encoding).strip()
95			else:
96			raise IL2FBRegimentLookupError
97
98
99			@export
100			class Regiment:
101
102			def __init__(
103			self,
104			id: str,
105			air_force: AirForceConstant,
106			info_loader: Optional[RegimentInfoLoader]=None,
107			):
108			self.id = id
109			self.air_force = air_force
110
111			self._info_loader = info_loader or RegimentInfoLoader()
112			self._text_attribute_loaders = {
113			'verbose_name': self._info_loader.get_name,
114			'help_text': self._info_loader.get_description,
115			}
116
117			def __getattr__(self, name: str) -> str:
118			loader = self._text_attribute_loaders.get(name)
119			if not loader:
120			raise IL2FBRegimentAttributeError(
121			f"'{self.__class__}' object has no attribute '{name}'"
122			)
123
124			language = get_language()
125			if language and language.upper() not in SUPPORTED_LANGUAGES:
126			language = DEFAULT_LANGUAGE_NAME
127
128			full_name = f"{name}_{language}"
129
130			value = getattr(self, full_name, None)
131
132			if not value:
133			value = self._load_value(loader, language)
134			setattr(self, full_name, value)
135
136			return value
137
138			def _load_value(
139			self,
140			loader: Callable[[str, Any], str],
141			language: Any,
142			) -> str:
143
144			value = loader(regiment_id=self.id, language=language)
145
146			if not value and language != DEFAULT_LANGUAGE_NAME:
147			value = loader(regiment_id=self.id, language=DEFAULT_LANGUAGE_NAME)
148
149			return value
150
151			def to_primitive(self, context: Any=None) -> Dict[str, Any]:
152			return {
153			'id': self.id,
154			'air_force': self.air_force.to_primitive(context),
155			'verbose_name': self.verbose_name,
156			'help_text': self.help_text,
157			}
158
159			def __repr__(self) -> str:
160			return f"<{self.__class__.__name__} '{self.id}'>"
161
162
163			@export
164			class Regiments:
165
166			def __init__(
167			self,
168			data_dir_path: Path=DEFAULT_DATA_DIR_PATH,
169			data_file_name: str=DEFAULT_CATALOG_FILE_NAME,
170			data_file_encoding: str=DEFAULT_DATA_FILE_ENCODING,
171			info_loader: RegimentInfoLoader=None,
172			):
173			self._data_file_path = data_dir_path / data_file_name
174			if not self._data_file_path.exists():
175			raise IL2FBRegimentDataSourceNotFound(
176			f"data source file '{str(self._data_file_path)}' does not exist"
177			)
178
179			self._data_file_encoding = data_file_encoding
180
181			self._info_loader = info_loader or RegimentInfoLoader(
182			data_dir_path=data_dir_path,
183			data_file_encoding=data_file_encoding,
184			)
185
186			self._cache = dict()
187
188			def get_by_id(self, id: str) -> Regiment:
189			regiment = self._cache.get(id)
190
191			if not regiment:
192			regiment = self._load_by_id_or_raise(id)
193			self._cache[id] = regiment
194
195			return regiment
196
197			def _load_by_id_or_raise(self, id: str) -> Regiment:
198			default_regiment_id = self._get_default_regiment_id_for_regiment(id)
199			if not default_regiment_id:
200			raise IL2FBRegimentLookupError(
201			f"regiment with id '{id}' not found"
202			)
203
204			air_force = AIR_FORCES.get_by_default_regiment_id(default_regiment_id)
205
206			return Regiment(
207			id=id,
208			air_force=air_force,
209			info_loader=self._info_loader,
210			)
211
212			def _get_default_regiment_id_for_regiment(self, id: str) -> Optional[str]:
213			with self._data_file_path.open(
214			mode="rt",
215			encoding=self._data_file_encoding,
216			buffering=1,
217			) as f:
218
219			default_regiment_id = None
220
221			for line in f:
222			line = line.strip()
223			if not line:
224			continue
225
226			if line in DEFAULT_REGIMENTS_IDS:
227			default_regiment_id = line
228
229			elif line == id:
230			return default_regiment_id
231
232			def filter_by_air_force(self, air_force: AirForceConstant) -> List[Regiment]:
233			result = []
234
235			with self._data_file_path.open(
236			mode="rt",
237			encoding=self._data_file_encoding,
238			buffering=1,
239			) as f:
240
241			default_regiment_id = air_force.default_regiment_id
242			air_force_is_found = False
243
244			for line in f:
245			line = line.strip()
246
247			if not line:
248			continue
249
250			if line == default_regiment_id:
251			air_force_is_found = True
252
253			elif air_force_is_found:
254			if (
255			line in DEFAULT_REGIMENTS_IDS or
256			(line.startswith('[') and line.endswith(']'))
257			):
258			# Next section was found. Fullstop.
259			break
260
261			regiment = self._cache.get(line)
262			if not regiment:
263			regiment = Regiment(
264			id=line,
265			air_force=air_force,
266			info_loader=self._info_loader,
267			)
268			self._cache[line] = regiment
269
270			result.append(regiment)
271
272			return result
273

IL2HorusTeam / il2fb-regiments

regiments.core.Regiment.__getattr__() A last analyzed 2020-12-04 18:09 UTC

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regiments.core.Regiment.getattr() A
last analyzed 2020-12-04 18:09 UTC