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import re
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import sys
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import os
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import importlib
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import importlib.util
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import site
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from calculate.variables.old_vars.datavars import Variable, HashVariable,\
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TableVariable
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from calculate.variables.datavars import NamespaceNode, VariableNode,\
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ListType, IntegerType,\
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FloatType, IniType, TableType,\
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Namespace, VariableError
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from calculate.utils.gentoo import ProfileWalker
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from calculate.utils.files import list_directory, read_file, FilesError
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from pyparsing import Literal, Word, ZeroOrMore, Group, Optional, restOfLine,\
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empty, printables, OneOrMore, lineno, line, col, SkipTo,\
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LineEnd, Combine, nums
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from enum import Enum
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from contextlib import contextmanager
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class Define(Enum):
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assign = 0
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append = 1
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remove = 2
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class CalculateIniParser:
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'''Класс парсера calculate.ini файлов.'''
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def __init__(self):
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self._errors = []
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self.operations = {"=": Define.assign,
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"+=": Define.append,
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"-=": Define.remove}
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lbrack = Literal("[")
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rbrack = Literal("]")
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# comma = Literal(",").suppress()
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comment_symbol = Literal(';') | Literal('#')
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# Define = self.Define
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value_operation = (Literal("=") | Combine(Literal("+") + Literal("="))
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| Combine(Literal("-") + Literal("=")))
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comment = comment_symbol + Optional(restOfLine)
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section_name = (lbrack.suppress() + (~Word(nums)
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+ Word(printables+'\t',
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excludeChars='[]'))
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+ rbrack.suppress())
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value_name = Word(printables+'\t', excludeChars='=-+')
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# non_comma = Word(printables+'\t', excludeChars=',')
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clear_section = lbrack.suppress() + Group(empty) + rbrack.suppress()
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row_index = lbrack.suppress() + Word(nums) + rbrack.suppress()
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namespace_start = Group(OneOrMore(section_name)
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+ (clear_section | ~lbrack)
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+ LineEnd().suppress())
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table_start = Group(OneOrMore(section_name)
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+ (row_index | clear_section | ~lbrack)
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+ LineEnd().suppress())
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section_start = (namespace_start('namespace') |
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table_start('table'))
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# Если содержимое ini-файла не предваряется заголовком секции,
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# значит эта строка ошибочна.
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unexpected = Group(~section_start + SkipTo(LineEnd(),
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include=True))("error")
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unexpected.setParseAction(self._unexpected_token)
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key_value = (~lbrack + value_name
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+ value_operation + empty
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+ restOfLine + LineEnd().suppress())
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def strip_key_value(tokens):
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tokens[0] = tokens[0].strip()
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tokens[1] = tokens[1].strip()
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key_value.setParseAction(strip_key_value)
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self.ini_section_parser = (section_start
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+ Group(ZeroOrMore(
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Group(key_value | unexpected)))
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| unexpected)
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self.ini_section_parser.ignore(comment)
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def parse(self, data: str):
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for tokens, start, end in self.ini_section_parser.scanString(data):
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if tokens.getName() == "error":
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continue
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section, defkeys = tokens
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if section.getName() == 'namespace':
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section_list = section.asList()
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if section_list[-1] == []:
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yield {'clear_section': (section_list[:-1], )}
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else:
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yield {'start_section': (section_list, )}
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for defkey in defkeys:
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if defkey.getName() == "error":
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continue
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yield {'define_key': (defkey[0], defkey[2],
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self.operations[defkey[1]])}
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else:
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table_list = section.asList()
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if table_list[-1] == []:
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yield {'clear_table': (table_list[:-1], )}
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else:
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table_values = {}
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for defkey in defkeys:
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if defkey.getName() == "error":
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continue
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table_values.update({defkey[0]: defkey[2]})
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yield {'start_table': (table_list, table_values)}
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def _unexpected_token(self, string, location, tokens):
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'''Метод вызываемый парсером, если обнаружена некорректная строка,
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предназначен для получения некорректной строки и ее дальнейшего
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разбора.'''
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error_line = line(location, string).strip()
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if error_line:
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self._errors.append((error_line, lineno(location, string),
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col(location, string)))
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@property
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def errors(self):
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errors = self._errors
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self._errors = []
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return errors
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class NamespaceIniFiller:
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'''Класс, предназначенный для наполнения Namespace объекта переменными
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из calculate.ini файла.'''
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available_sections = {'custom'}
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def __init__(self, restrict_creation=True):
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self.ini_parser = CalculateIniParser()
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self.restricted = restrict_creation
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self.modify_only = False
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def error(self, lineno, error_message):
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self.errors.append(lineno, error_message)
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def fill(self, namespace: NamespaceNode, ini_file_text: str) -> None:
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'''Метод для разбора calculate.ini файла и добавления всех его
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переменных в указанное пространство имен.'''
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self.namespace = namespace
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self.current_namespace = self.namespace
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self.errors = []
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for parsed_line in self.ini_parser.parse(ini_file_text):
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self._line_processor(**parsed_line)
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def _line_processor(self, start_section=None,
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clear_section=None,
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start_table=None,
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clear_table=None,
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define_key=None,
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error=None, **kwargs):
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if start_section is not None:
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self.start_section(*start_section)
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elif clear_section is not None:
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self.clear_section(*clear_section)
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elif start_table is not None:
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self.start_table(*start_table)
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elif clear_table is not None:
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self.clear_table(*clear_table)
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elif define_key is not None:
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self.define_key(*define_key)
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for error in self.ini_parser.errors:
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self.set_error(*error)
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def start_section(self, sections: str) -> None:
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'''Метод для получения доступа и создания пространств имен.'''
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print('SECTIONS: {}'.format(sections))
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if self.restricted:
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self.modify_only = sections[0] not in self.available_sections
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self.current_namespace = self.namespace
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for section in sections:
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print('START SECTION: {}'.format(section))
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if isinstance(self.current_namespace, Datavars):
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if section not in self.current_namespace:
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raise VariableError("variables package '{}' is not found".
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format(section))
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elif isinstance(self.current_namespace, NamespaceNode):
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if section not in self.current_namespace.namespaces:
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if not self.modify_only:
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self.current_namespace.add_namespace(
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NamespaceNode(section))
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else:
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self.current_namespace = None
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return
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self.current_namespace = self.current_namespace.namespaces[section]
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def clear_section(self, sections: list) -> None:
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'''Метод для очистки пространства имен.'''
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if self.restricted:
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self.modify_only = sections[0] not in self.available_sections
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current_namespace = self.namespace
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for section in sections:
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if (isinstance(current_namespace, Datavars) and
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section in current_namespace):
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current_namespace = current_namespace[section]
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elif isinstance(current_namespace, NamespaceNode):
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if section in current_namespace.namespaces:
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current_namespace = current_namespace[section]
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elif (section in current_namespace.variables and
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current_namespace.variables[section].variable_type
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is TableType):
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table_variable = current_namespace.variables[section]
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table_to_clear = table_variable.get_value()
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table_to_clear.clear()
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table_variable.source = table_to_clear
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return
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else:
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return
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if not self.modify_only:
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current_namespace.clear()
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def start_table(self, sections: str, row) -> None:
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'''Метод для создания и модификации таблиц.'''
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if self.restricted:
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self.modify_only = sections[0] not in self.available_sections
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self.current_namespace = self.namespace
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row_index = int(sections.pop())
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table_name = sections.pop()
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for section in sections:
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if section not in self.current_namespace.namespaces:
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if not self.modify_only:
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self.current_namespace.add_namespace(
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NamespaceNode(section))
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else:
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self.current_namespace = None
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return
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self.current_namespace = self.current_namespace.namespaces[section]
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if table_name not in self.current_namespace.variables:
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if not self.modify_only:
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table_variable = VariableNode(table_name,
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self.current_namespace,
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variable_type=TableType,
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source=[row])
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else:
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table_variable = self.current_namespace.variables[table_name]
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table = table_variable.get_value()
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if row_index < len(table):
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table.change_row(row, row_index)
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else:
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table.add_row(row)
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table_variable.source = table
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def define_key(self, key: str, value: str, optype) -> None:
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print('DEFINE KEY: {} -> {} TO {}'.format(key, value,
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self.current_namespace))
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if self.current_namespace is None:
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return
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if optype == Define.assign:
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if key not in self.current_namespace:
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self.define_variable(key, value)
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else:
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self.change_value(key, value)
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elif optype == Define.append:
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if key not in self.current_namespace:
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self.define_variable(key, value)
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else:
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self.append_value(key, value)
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elif optype == Define.remove:
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if key not in self.current_namespace:
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self.define_variable(key, value)
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else:
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self.remove_value(key, value)
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def change_value(self, key: str, value: str) -> None:
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'''Метод для изменения значения переменной.'''
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variable = self.current_namespace[key]
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variable.source = value
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def define_variable(self, key: str, value: str) -> None:
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'''Метод для создания переменных в calculate.ini файле.'''
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if not self.modify_only:
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VariableNode(key, self.current_namespace, variable_type=IniType,
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source=value)
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else:
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# TODO Какая-то обработка ошибки.
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pass
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def append_value(self, key: str, value: str) -> None:
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'''Метод выполняющий действия возложенные на оператор +=.'''
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variable = self.current_namespace[key]
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variable_value = variable.get_value()
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if variable.variable_type is IniType:
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value_list = value.split(',')
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variable_list = variable_value.split(',')
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for item in value_list:
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if item not in variable_list:
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variable_list.append(item.strip())
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variable_value = ','.join(variable_list)
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elif variable.variable_type is ListType:
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value_list = value.split(',')
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for item in value_list:
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if item not in variable_value:
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variable_value.append(item.strip())
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elif variable.variable_type is IntegerType:
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variable_value += int(value)
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elif variable.variable_type is FloatType:
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variable_value += float(value)
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variable.source = variable_value
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def remove_value(self, key: str, value: str) -> None:
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'''Метод выполняющий действия возложенные на оператор -=.'''
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variable = self.current_namespace[key]
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variable_value = variable.get_value()
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if variable.variable_type is IniType:
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value_list = value.split(',')
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variable_list = [item.strip() for item in
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variable_value.split(',')]
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for item in value_list:
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if item in variable_list:
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variable_list.remove(item.strip())
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variable_value = ','.join(variable_list)
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elif variable.variable_type is ListType:
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value_list = value.split(',')
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for item in value_list:
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if item in variable_value:
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variable_value.remove(item.strip())
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elif variable.variable_type is IntegerType:
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variable_value -= int(value)
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elif variable.variable_type is FloatType:
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variable_value -= float(value)
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variable.source = variable_value
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def set_error(self, line, lineno, col):
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'''Метод для добавления ошибки в лог.'''
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self.error(lineno, "Syntax error: {}".format(line))
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class VariableLoader:
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'''Класс загрузчика переменных из python-файлов и из ini-файлов.'''
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ini_basename = "calculate.ini"
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def __init__(self, datavars, variables_path, repository_map=None):
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self.datavars = datavars
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self.ini_filler = NamespaceIniFiller()
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self.variables_path = variables_path
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self.variables_package = '.'.join(variables_path.split('/'))
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self.repository_map = repository_map
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def load_variables_package(self, package_name: str) -> None:
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'''Метод для загрузки пакетов с переменными.'''
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directory_path = os.path.join(self.variables_path, package_name)
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package = '{}.{}'.format(self.variables_package, package_name)
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package_namespace = NamespaceNode(package_name)
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self.datavars.root.add_namespace(package_namespace)
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self._fill_from_package(package_namespace, directory_path, package)
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def load_from_profile(self):
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if self.repository_map != {}:
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self.repository_map = (self.repository_map or
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self._get_repository_map(self.datavars))
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profile_path = self.datavars.os.gentoo.profile.path
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self._fill_from_ini(profile_path)
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def _fill_from_package(self, current_namespace: NamespaceNode,
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directory_path: str, package: str) -> None:
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'''Метод для зaполнения переменных из python-файла.'''
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file_nodes = []
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directory_nodes = []
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# Просматриваем директорию
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for node in os.scandir(directory_path):
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if node.is_dir():
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directory_nodes.append(node)
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elif node.is_file() and node.name.endswith('.py'):
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file_nodes.append(node)
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# Сначала загружаем переменные из файлов.
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for file_node in file_nodes:
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file_name = file_node.name[:-3]
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Namespace.set_current_namespace(current_namespace)
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with self.test(file_name, current_namespace):
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# importlib.import_module('{}.{}'.format(package, file_name))
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spec = importlib.util.spec_from_file_location(
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'{}.{}'.format(package, file_name),
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file_node.path)
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module = importlib.util.module_from_spec(spec)
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spec.loader.exec_module(module)
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# Обходим остальные директории.
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for directory_node in directory_nodes:
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namespace = NamespaceNode(directory_node.name)
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current_namespace.add_namespace(namespace)
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self._fill_from_package(namespace, directory_node.path,
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'{}.{}'.format(package,
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directory_node.name))
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def _fill_from_ini(self, profile_path):
|
|
|
'''Метод для зaполнения переменных из ini-файла.'''
|
|
|
print('PROCESSING INI FROM PROFILE')
|
|
|
profile_walker = ProfileWalker(self.ini_basename,
|
|
|
self.repository_map)
|
|
|
for file_path in profile_walker.find(profile_path):
|
|
|
try:
|
|
|
print('PROCESS FILE: {}'.format(file_path))
|
|
|
ini_file_text = read_file(file_path)
|
|
|
self.ini_filler.fill(self.datavars, ini_file_text)
|
|
|
except FilesError:
|
|
|
# TODO продумать обработку ошибок.
|
|
|
pass
|
|
|
|
|
|
def _get_repository_map(self, datavars):
|
|
|
return {repo['name']: repo['path']
|
|
|
for repo in datavars.os.gentoo.repositories}
|
|
|
|
|
|
def fill_from_custom_ini(self, file_path: str):
|
|
|
'''Метод для заполнения переменных из конкретного указанного файла.'''
|
|
|
print('LOAD FROM INI: {}'.format(file_path))
|
|
|
if os.path.exists(file_path):
|
|
|
ini_file_text = read_file(file_path)
|
|
|
self.ini_filler.fill(self.datavars, ini_file_text)
|
|
|
|
|
|
@contextmanager
|
|
|
def test(self, file_name, namespace):
|
|
|
print('IMPORT: {}.{}'.format(namespace.get_fullname(), file_name))
|
|
|
try:
|
|
|
yield self
|
|
|
finally:
|
|
|
print('IMPORTED FROM: {}.{}'.format(namespace.get_fullname(),
|
|
|
file_name))
|
|
|
|
|
|
|
|
|
class Datavars:
|
|
|
'''Класс для хранения переменных и управления ими.'''
|
|
|
def __init__(self, variables_path='calculate/vars', repository_map=None):
|
|
|
self._variables_path = variables_path
|
|
|
self._available_packages = self._get_available_packages()
|
|
|
|
|
|
self.root = NamespaceNode('<root>')
|
|
|
self._loader = VariableLoader(self, self._variables_path,
|
|
|
repository_map=repository_map)
|
|
|
Namespace.reset()
|
|
|
Namespace.set_datavars(self)
|
|
|
|
|
|
self._loader.load_from_profile()
|
|
|
|
|
|
def reset(self):
|
|
|
'''Метод для сброса модуля переменных.'''
|
|
|
self.root.clear()
|
|
|
self.root = NamespaceNode('<root>')
|
|
|
self._available_packages.clear()
|
|
|
self._available_packages = self._get_available_packages()
|
|
|
Namespace.set_datavars(self)
|
|
|
|
|
|
def _get_available_packages(self) -> dict:
|
|
|
'''Метод для получения словаря с имеющимися пакетами переменных
|
|
|
и путями к ним.'''
|
|
|
available_packages = dict()
|
|
|
for file_name in os.listdir(self._variables_path):
|
|
|
if file_name.startswith('__'):
|
|
|
continue
|
|
|
file_path = os.path.join(self._variables_path, file_name)
|
|
|
if os.path.isdir(file_path):
|
|
|
available_packages.update({file_name: file_path})
|
|
|
return available_packages
|
|
|
|
|
|
def __getattr__(self, package_name: str):
|
|
|
'''Метод возвращает ноду пространства имен, соответствующего искомому
|
|
|
пакету.'''
|
|
|
print('getattr: {}'.format(package_name))
|
|
|
if package_name in self.root.namespaces:
|
|
|
return self.root[package_name]
|
|
|
elif package_name not in self._available_packages:
|
|
|
raise VariableError("variables package '{}' is not found".
|
|
|
format(package_name))
|
|
|
else:
|
|
|
self._loader.load_variables_package(package_name)
|
|
|
return self.root[package_name]
|
|
|
|
|
|
def __getitem__(self, package_name: str) -> None:
|
|
|
'''Метод возвращает ноду пространства имен, соответствующего искомому
|
|
|
пакету.'''
|
|
|
print('getitem: {}'.format(package_name))
|
|
|
if package_name in self.root:
|
|
|
return self.root[package_name]
|
|
|
elif package_name not in self._available_packages:
|
|
|
raise VariableError("variables package '{}' is not found".
|
|
|
format(package_name))
|
|
|
else:
|
|
|
self._loader.load_variables_package(package_name)
|
|
|
return self.root[package_name]
|
|
|
|
|
|
def __contains__(self, package_name):
|
|
|
if package_name in self.root.namespaces:
|
|
|
return True
|
|
|
elif package_name not in self._available_packages:
|
|
|
return False
|
|
|
else:
|
|
|
self._loader.load_variables_package(package_name)
|
|
|
return True
|
|
|
|
|
|
@property
|
|
|
def namespaces(self):
|
|
|
return self.root.namespaces
|
|
|
|
|
|
|
|
|
class OldVariableLoader:
|
|
|
'''Класс, используемый для загрузки переменных из python модуля.'''
|
|
|
re_upper = re.compile("(.)([A-Z])")
|
|
|
|
|
|
def _get_varlike_attrs(self, obj):
|
|
|
'''Метод для получения списка аттрибутов похожих на переменные.'''
|
|
|
for attrname in (x for x in dir(obj) if x[:1].isupper()):
|
|
|
yield self.re_upper.sub(r"\1_\2", attrname).lower(), \
|
|
|
getattr(obj, attrname)
|
|
|
|
|
|
def fill(self, namespace, dirpath, package):
|
|
|
'''Загрузить в namespace переменные из указанных модулей.'''
|
|
|
for fullfn in list_directory(dirpath, fullpath=True):
|
|
|
dn, fn = os.path.split(fullfn)
|
|
|
if os.path.isdir(fullfn):
|
|
|
newns = namespace.add_namespace(Namespace(fn))
|
|
|
self.fill(newns, fullfn, "{}.{}".format(package, fn))
|
|
|
elif fn.endswith(".py"):
|
|
|
module = self._load_module_source(package, fn, fullfn)
|
|
|
for varname, cls in self._get_varlike_attrs(module):
|
|
|
if Variable.is_implementation(cls):
|
|
|
namespace.add_variable(cls(varname))
|
|
|
elif HashVariable.is_implementation(cls) or \
|
|
|
TableVariable.is_implementation(cls) or \
|
|
|
Namespace.is_implementation(cls):
|
|
|
_newns = namespace.add_namespace(cls(varname,
|
|
|
namespace))
|
|
|
for _varname, _cls in self._get_varlike_attrs(cls):
|
|
|
if Variable.is_implementation(_cls):
|
|
|
_newns.add_variable(_cls(_varname))
|
|
|
|
|
|
@classmethod
|
|
|
def default(cls):
|
|
|
site_dirs = [os.path.normpath(x) for x in site.getsitepackages()]
|
|
|
for site_dir in site_dirs:
|
|
|
calculate_dir = os.path.join(site_dir, "calculate/vars")
|
|
|
if os.path.exists(calculate_dir):
|
|
|
return (calculate_dir, "calculate.vars")
|
|
|
|
|
|
def _load_module_source(self, package, name, path):
|
|
|
if name.startswith('calculate.vars.'):
|
|
|
full_name = name
|
|
|
else:
|
|
|
full_name = '.'.join([package, name])
|
|
|
|
|
|
if full_name in sys.modules:
|
|
|
return sys.modules[full_name]
|
|
|
|
|
|
spec = importlib.util.spec_from_file_location(full_name, path)
|
|
|
module = importlib.util.module_from_spec(spec)
|
|
|
spec.loader.exec_module(module)
|
|
|
sys.modules[full_name] = module
|
|
|
return module
|
|
|
|
|
|
|
|
|
class OldProfileFiller:
|
|
|
"""
|
|
|
Заполнитель значений переменных из файлов calculate.ini в профилях
|
|
|
"""
|
|
|
basename = "calculate.ini"
|
|
|
|
|
|
def get_repository_map(self, datavars):
|
|
|
return {repo['name']: repo['path']
|
|
|
for repo in datavars.os.gentoo.repositories}
|
|
|
|
|
|
def fill(self, datavars, profile_path):
|
|
|
ini_filler = NamespaceIniFiller()
|
|
|
profile_walker = ProfileWalker(self.basename,
|
|
|
self.get_repository_map(datavars))
|
|
|
for file_path in profile_walker.find(profile_path):
|
|
|
try:
|
|
|
ini_file_text = read_file(file_path)
|
|
|
ini_filler.fill(datavars, ini_file_text)
|
|
|
except FilesError:
|
|
|
pass
|
