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# vim: fileencoding=utf-8
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#
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from jinja2.ext import Extension
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from jinja2 import Environment, FileSystemLoader, TemplateSyntaxError, nodes,\
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contextfunction
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from jinja2.utils import missing
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from jinja2.runtime import Context, Undefined
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from collections.abc import MutableMapping
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from collections import OrderedDict
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from importlib import import_module
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import re
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import os
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from ..utils.package import PackageAtom, PackageAtomError
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from ..utils.files import join_paths
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# Типы шаблона: директория или файл.
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DIR, FILE = range(2)
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class IncorrectParameter(Exception):
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pass
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class DefaultParameterError(Exception):
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pass
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class ConditionFailed(TemplateSyntaxError):
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pass
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class TemplateParametersChecker:
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'''Класс для хранения, проверки и разбора параметров шаблона.'''
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available_parameters = {'name', 'path', 'append', 'chmod', 'chown',
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'autoupdate', 'env', 'force', 'source', 'format',
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'protected', 'mirror', 'run', 'exec', 'env',
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'package', 'merge', 'postmerge', 'action',
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'rebuild', 'restart', 'stop', 'start'}
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inheritable_parameters = {'chmod': (None, None), 'chown': (None, None),
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'autoupdate': (None, None), 'env': (None, None),
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'package': (None, None), 'action': (None, None)}
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available_appends = set()
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directory_default_values = {'chown': 'root:root',
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'chmod': '755'}
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file_default_values = {'chown': 'root:root',
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'chmod': '644'}
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available_formats = set()
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format_is_inspected = False
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chmod_value_regular = re.compile(
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r'([r-][w-][x-])([r-][w-][x-])([r-][w-][x-])')
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package_atom_parser = PackageAtom()
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def __init__(self, parameters_container, template_type, parameters=dict(),
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chroot_path='/'):
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self.template_type = template_type
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self.chroot_path = chroot_path
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self._parameters_container = parameters_container
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self._inspect_formats_package()
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self.checkers_list = OrderedDict({
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'package': self.check_package_parameter,
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'append': self.check_append_parameter,
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'rebuild': self.check_rebuild_parameter,
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'restart': self.check_restart_parameter,
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'stop': self.check_stop_parameter,
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'start': self.check_start_parameter,
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'chown': self.check_chown_parameter,
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'chmod': self.check_chmod_parameter,
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'autoupdate': self.check_autoupdate_parameter,
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'source': self.check_source_parameter,
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'force': self.check_force_parameter
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})
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try:
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if template_type == DIR:
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self.check_template_parameters(self.directory_default_values)
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elif template_type == FILE:
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self.check_template_parameters(self.file_default_values)
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except IncorrectParameter as error:
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raise DefaultParameterError('Default parameter value error: {}'.
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format(str(error)))
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if parameters:
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self.check_template_parameters(parameters)
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def __getattr__(self, parameter_name):
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if parameter_name not in self.available_parameters:
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raise IncorrectParameter("Unknown parameter: '{}'".
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format(parameter_name))
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elif parameter_name not in self._parameters_container:
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return False
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else:
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return self._parameters_container[parameter_name]
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def check_template_parameter(self, parameter_name, parameter_value):
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# Если параметр наследуем и уже встречался до этого с тем же
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# значением -- второй раз не проверяем его.
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if (parameter_name in self.inheritable_parameters and
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parameter_value == self.inheritable_parameters[parameter_name][0]):
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return self.inheritable_parameters[parameter_name][1]
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if parameter_name not in self.available_parameters:
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raise IncorrectParameter("Unknown parameter '{0}'".
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format(parameter_name))
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elif parameter_name in self.checkers_list:
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checked_value = self.checkers_list[parameter_name](
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parameter_value)
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if parameter_name in self.inheritable_parameters:
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self.inheritable_parameters[parameter_name] =\
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(parameter_value, checked_value)
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return checked_value
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def check_template_parameters(self, parameters):
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for parameter_name in parameters:
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if (parameter_name in self.inheritable_parameters and
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parameters[parameter_name] ==
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self.inheritable_parameters[parameter_name][0]):
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self._parameters_container[parameter_name] =\
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self.inheritable_parameters[parameter_name][1]
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continue
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if parameter_name not in self.available_parameters:
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raise IncorrectParameter("Unknown parameter '{0}'".
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format(parameter_name))
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elif parameter_name in self.checkers_list:
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parameter_value = self.checkers_list[parameter_name](
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parameters[parameter_name]
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)
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self._parameters_container[parameter_name] = parameter_value
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if parameter_name in self.inheritable_parameters:
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self.inheritable_parameters[parameter_name] =\
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(parameter_value, parameters[parameter_name])
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def check_package_parameter(self, parameter_value):
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try:
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self.package_atom_parser.parse_package_parameter(parameter_value)
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except PackageAtomError as error:
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raise IncorrectParameter(str(error))
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parameter_value = self.package_atom_parser.atom_dictionary
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return parameter_value
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def check_append_parameter(self, parameter_value):
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if parameter_value not in self.available_appends:
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raise IncorrectParameter("Unacceptable value '{}' of parameter"
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" 'append'".format(parameter_value))
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return parameter_value
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def check_rebuild_parameter(self, parameter_value):
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if isinstance(parameter_value, bool):
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raise IncorrectParameter("'rebuild' parameter value is not bool")
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elif 'package' not in self._parameters_container:
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raise IncorrectParameter(("'source' parameter is set without "
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"'package' parameter"))
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return parameter_value
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def check_restart_parameter(self, parameter_value):
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if parameter_value and isinstance(parameter_value, str):
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return parameter_value
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else:
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raise IncorrectParameter(
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"'restart' parameter value is not correct")
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def check_stop_parameter(self, parameter_value):
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if parameter_value and isinstance(parameter_value, str):
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return parameter_value
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else:
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raise IncorrectParameter("'stop' parameter value is not correct")
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def check_start_parameter(self, parameter_value):
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if parameter_value and isinstance(parameter_value, str):
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return parameter_value
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else:
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raise IncorrectParameter("'start' parameter value is not correct")
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def check_run_parameter(self, parameter_value):
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if parameter_value and isinstance(parameter_value, str):
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return parameter_value
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else:
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raise IncorrectParameter("'run' parameter value is nkt correct")
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def check_exec_parameter(self, parameter_value):
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if parameter_value and isinstance(parameter_value, str):
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return parameter_value
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else:
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raise IncorrectParameter("'exec' parameter value is not correct")
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def check_chown_parameter(self, parameter_value):
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if not parameter_value or isinstance(parameter_value, bool):
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raise IncorrectParameter("'chown' parameter value is empty.")
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parameter_value = self.get_chown_values(parameter_value)
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return parameter_value
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def check_chmod_parameter(self, parameter_value):
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result = self.chmod_value_regular.search(parameter_value)
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if result:
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parameter_value = ''
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for group_number in range(3):
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current_group = result.groups()[group_number]
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num = ''
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for sym_number in range(3):
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if current_group[sym_number] != '-':
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num = num + '1'
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else:
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num = num + '0'
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parameter_value = parameter_value + num
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return int(parameter_value, 2)
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elif parameter_value.isdigit():
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parameter_value = int(parameter_value, 8)
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return parameter_value
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else:
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raise IncorrectParameter("'chmod' parameter value is not correct")
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def check_source_parameter(self, parameter_value):
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if self.chroot_path != '/':
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real_path = join_paths(self.chroot_path, parameter_value)
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else:
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real_path = parameter_value
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if not parameter_value or isinstance(parameter_value, bool):
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raise IncorrectParameter("'source' parameter value is empty")
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elif (self.template_type == DIR and
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('append' not in self._parameters_container or
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self._parameters_container['append'] != 'link')):
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raise IncorrectParameter(
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("'source' parameter is set without "
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"'append = link' for directory template")
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)
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elif not os.path.exists(real_path):
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raise IncorrectParameter(
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"File from 'source' parameter does not exist")
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return os.path.normpath(real_path)
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def check_force_parameter(self, parameter_value):
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if isinstance(parameter_value, bool):
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return parameter_value
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else:
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raise IncorrectParameter("'force' parameter value is not bool")
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def check_autoupdate_parameter(self, parameter_value):
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print('autoupdate value = {}'.format(parameter_value))
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if isinstance(parameter_value, bool):
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return parameter_value
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else:
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raise IncorrectParameter(
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"'autoupdate' parameter value is not bool")
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def get_chown_values(self, chown: str):
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"""Получить значения uid и gid из параметра chown."""
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if chown and ':' in chown:
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user_name, group_name = chown.split(':')
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if user_name.isdigit():
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uid = int(user_name)
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else:
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import pwd
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try:
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if self.chroot_path == '/':
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uid = pwd.getpwnam(user_name).pw_uid
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else:
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uid = self.get_uid_from_passwd(user_name)
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except (KeyError, TypeError):
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self.output.set_error(
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format(user_name))
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raise IncorrectParameter(
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("'chown' value '{0}' is not correct:"
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"no such user in the system: {1}").
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format(chown, user_name))
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if group_name.isdigit():
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gid = int(group_name)
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else:
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import grp
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try:
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if self.chroot_path == '/':
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gid = grp.getgrnam(group_name).gr_gid
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else:
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gid = self.get_gid_from_group(group_name)
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except (KeyError, TypeError):
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raise IncorrectParameter(
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("'chown' value '{0}' is not correct:"
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"no such group in the system: {1}").
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format(chown, group_name))
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return {'uid': uid, 'gid': gid}
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else:
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raise IncorrectParameter("'chown' value '{0}' is not correct".
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format(chown, self.template_path))
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def get_uid_from_passwd(self, user_name: str):
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"""Взять uid из chroot passwd файла."""
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passwd_file_path = os.path.join(self.chroot_path, 'etc/passwd')
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passwd_dictionary = []
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if os.path.exists(passwd_file_path):
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with open(passwd_file_path, 'r') as passwd_file:
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for line in passwd_file:
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if line.startswith('#'):
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continue
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passwd_item = tuple(line.split(':')[0:3:2])
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if (len(passwd_item) > 1 and passwd_item[0]
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and passwd_item[0]):
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passwd_dictionary.append(passwd_item)
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passwd_dictionary = dict(passwd_dictionary)
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return int(passwd_dictionary[user_name])
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else:
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IncorrectParameter("passwd file was not found in {}".
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format(passwd_file_path))
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def get_gid_from_group(self, group_name: str):
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"""Взять gid из chroot group файла."""
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group_file_path = os.path.join(self.chroot_path, 'etc/group')
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group_dictionary = []
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if os.path.exists(group_file_path):
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with open(group_file_path, 'r') as group_file:
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for line in group_file:
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if line.startswith('#'):
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continue
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group_item = tuple(line.split(':')[0:3:2])
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if len(group_item) > 1 and group_item[0] and group_item[1]:
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group_dictionary.append(group_item)
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group_dictionary = dict(group_dictionary)
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if group_name in group_dictionary:
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return int(group_dictionary[group_name])
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else:
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IncorrectParameter("'{0}' gid was not found in {1}".
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format(group_name, group_file_path))
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else:
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IncorrectParameter("group file was not found in {}".
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format(group_file_path))
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@classmethod
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def _inspect_formats_package(cls):
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'''Метод для определения множества доступных форматов и
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предоставляемых ими параметров.'''
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if cls.format_is_inspected:
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return
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parameters_set = set()
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format_set = set()
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format_directory_path = os.path.join(os.path.dirname(__file__),
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'format')
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for module_name in os.listdir(format_directory_path):
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if (os.path.isdir(os.path.join('format', module_name)) or
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module_name == '__init__.py'):
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continue
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if module_name.endswith('.py'):
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module_name = module_name[:-3]
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try:
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module = import_module('calculate.templates.format.{}'.
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format(module_name))
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for obj in dir(module):
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if obj.endswith('Format') and obj != 'BaseFormat':
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format_class = getattr(module, obj, False)
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if format_class:
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format_set.add(format_class.FORMAT)
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parameters = getattr(format_class,
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'FORMAT_PARAMETERS', set())
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parameters_set.update(parameters)
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except Exception:
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continue
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cls.available_formats = format_set
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cls.available_parameters.update(parameters_set)
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cls.formats_inspected = True
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class Variables(MutableMapping):
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'''Класс заглушка вместо модуля переменных для тестов.'''
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def __init__(self, *args, **kwargs):
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self.__attrs = dict(*args, **kwargs)
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def __next__(self):
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iterator = iter(self.__attrs)
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return next(iterator)
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def __getattribute__(self, name):
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if name == '_Variables__attrs':
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return super().__getattribute__(name)
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try:
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return self.__attrs[name]
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except KeyError:
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raise AttributeError(name)
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def __getitem__(self, name):
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return self.__attrs[name]
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def __setitem__(self, name, value):
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self.__attrs[name] = value
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def __delitem__(self, name):
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del self.__attrs[name]
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def __iter__(self):
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return iter(self.__attrs)
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def __len__(self):
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return len(self.__attrs)
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def __repr__(self):
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return '<Variables {}>'.format(self.__attrs)
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def resolve_or_missing(context, key, missing=missing, env={}):
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'''Переопределение функции из для поиска значений переменных из jinja2.
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Ищет переменные в datavars.'''
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datavars = context.parent['__datavars__']
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if key in context.vars:
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return context.vars[key]
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if key in context.parent:
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return context.parent[key]
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if key in datavars:
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return datavars[key]
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for name in env:
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if name in datavars and key in datavars[name]:
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return datavars[name][key]
|
|
|
return missing
|
|
|
|
|
|
|
|
|
class CalculateContext(Context):
|
|
|
'''Класс контекста позволяющий искать значения datavars и сохранять их.'''
|
|
|
_env_set = set()
|
|
|
|
|
|
def resolve(self, key):
|
|
|
if self._legacy_resolve_mode:
|
|
|
rv = resolve_or_missing(self, key,
|
|
|
env=self._env_set)
|
|
|
else:
|
|
|
rv = self.resolve_or_missing(key)
|
|
|
if rv is missing:
|
|
|
return self.environment.undefined(name=key)
|
|
|
return rv
|
|
|
|
|
|
def resolve_or_missing(self, key):
|
|
|
if self._legacy_resolve_mode:
|
|
|
rv = self.resolve(key)
|
|
|
if isinstance(rv, Undefined):
|
|
|
rv = missing
|
|
|
return rv
|
|
|
return resolve_or_missing(self, key,
|
|
|
env=self._env_set)
|
|
|
|
|
|
|
|
|
class ParametersContainer(MutableMapping):
|
|
|
'''Класс для хранения параметров, взятых из шаблона, и передачи
|
|
|
их шаблонизатору.'''
|
|
|
def __init__(self, parameters_dictionary={}):
|
|
|
self.__parameters = parameters_dictionary
|
|
|
self._new_template = True
|
|
|
|
|
|
def set_parameters(self, *args, **kwargs):
|
|
|
parameters = dict(*args, **kwargs)
|
|
|
self.__parameters.update(parameters)
|
|
|
|
|
|
def __getattr__(self, parameter_name):
|
|
|
if (parameter_name not in
|
|
|
TemplateParametersChecker.available_parameters):
|
|
|
raise IncorrectParameter("Unknown parameter: '{}'".
|
|
|
format(parameter_name))
|
|
|
elif parameter_name not in self.__parameters:
|
|
|
return False
|
|
|
else:
|
|
|
return self.__parameters[parameter_name]
|
|
|
|
|
|
def __getitem__(self, name):
|
|
|
return self.__parameters[name]
|
|
|
|
|
|
def __setitem__(self, name, value):
|
|
|
self.__parameters[name] = value
|
|
|
|
|
|
def __delitem__(self, name):
|
|
|
del self.__parameters[name]
|
|
|
|
|
|
def __iter__(self):
|
|
|
return iter(self.__parameters)
|
|
|
|
|
|
def __len__(self):
|
|
|
return len(self.__parameters)
|
|
|
|
|
|
def __repr__(self):
|
|
|
return '<ParametersContainer: {0}>'.format(self.__parameters)
|
|
|
|
|
|
@property
|
|
|
def parameters(self):
|
|
|
return self.__parameters
|
|
|
|
|
|
|
|
|
class CalculateExtension(Extension):
|
|
|
'''Класс расширения для jinja2, поддерживающий теги calculate-шаблонов.'''
|
|
|
_parameters_set = set()
|
|
|
_datavars = Variables()
|
|
|
|
|
|
def __init__(self, environment):
|
|
|
print('EXTENSION IS INITIALIZED')
|
|
|
self.tags = {'calculate', 'save', 'set_var'}
|
|
|
self.CONDITION_TOKENS_TYPES = {'eq', 'ne', 'lt', 'gt', 'lteq', 'gteq'}
|
|
|
self.LITERAL_TOKENS_TYPES = {'string', 'integer', 'float'}
|
|
|
self.TARGET_FILES_SET = {'grp', 'system', 'etc', 'local', 'remote'}
|
|
|
|
|
|
self.parse_methods = {'calculate': self.parse_calculate,
|
|
|
'save': self.parse_save}
|
|
|
|
|
|
self.parameters_checker = None
|
|
|
self.new_parameters_set
|
|
|
self.environment = environment
|
|
|
|
|
|
def parse(self, parser):
|
|
|
self.parameters_checker = None
|
|
|
self.parser = parser
|
|
|
self.stream = parser.stream
|
|
|
tag_token = self.stream.current.value
|
|
|
return [self.parse_methods[tag_token]()]
|
|
|
|
|
|
def parse_save(self):
|
|
|
'''Метод для разбора тега save, сохраняющего значение указанной
|
|
|
переменной datavars.'''
|
|
|
lineno = next(self.stream).lineno
|
|
|
target_file = nodes.Const('', lineno=lineno)
|
|
|
|
|
|
if self.stream.skip_if('dot'):
|
|
|
target_file_name = self.stream.expect('name').value
|
|
|
if target_file_name in self.TARGET_FILES_SET:
|
|
|
target_file = nodes.Const(target_file_name)
|
|
|
else:
|
|
|
TemplateSyntaxError("Unknown target file '{}'".
|
|
|
format(target_file_name),
|
|
|
lineno=lineno)
|
|
|
|
|
|
# получаем список из имени переменной.
|
|
|
module_name = self.stream.expect('name').value
|
|
|
variable_name = [nodes.Const(module_name, lineno=lineno)]
|
|
|
while self.stream.skip_if('dot'):
|
|
|
name = self.stream.expect('name').value
|
|
|
variable_name.append(nodes.Const(name, lineno=lineno))
|
|
|
variable_name = nodes.List(variable_name, lineno=lineno)
|
|
|
|
|
|
if self.stream.skip_if('assign'):
|
|
|
right_value = self.parser.parse_expression(with_condexpr=True)
|
|
|
save_variable_node = self.call_method('save_variable',
|
|
|
[variable_name,
|
|
|
right_value,
|
|
|
target_file,
|
|
|
nodes.ContextReference()],
|
|
|
lineno=lineno)
|
|
|
return nodes.Output([save_variable_node], lineno=lineno)
|
|
|
else:
|
|
|
TemplateSyntaxError("'=' is expected in 'save' tag.",
|
|
|
lineno=lineno)
|
|
|
|
|
|
def parse_calculate(self):
|
|
|
'''Метод для разбора тега calculate, содержащего значения параметров и
|
|
|
условия выполнения шаблона.'''
|
|
|
pairs_list = []
|
|
|
expect_comma_flag = False
|
|
|
|
|
|
lineno = next(self.stream).lineno
|
|
|
|
|
|
while self.stream.current.type != 'block_end':
|
|
|
if expect_comma_flag:
|
|
|
self.stream.expect('comma')
|
|
|
|
|
|
if (self.stream.current.type == 'name'
|
|
|
and self.stream.current.value in self._parameters_set
|
|
|
and self.stream.look().type != 'dot'
|
|
|
and self.stream.look().type not in
|
|
|
self.CONDITION_TOKENS_TYPES):
|
|
|
# разбираем параметр.
|
|
|
# pairs_list.append(self.get_parameter_node())
|
|
|
name_node, value_node = self.get_parameter_node()
|
|
|
check_node = self.call_method('check_parameter',
|
|
|
[name_node,
|
|
|
value_node,
|
|
|
nodes.ContextReference()],
|
|
|
lineno=lineno)
|
|
|
pairs_list.append(check_node)
|
|
|
elif (self.stream.current.type == 'name'
|
|
|
or self.stream.current.type == 'lparen'):
|
|
|
# разбираем условие. Если условие False -- кидаем исключение.
|
|
|
condition_result = self.get_condition_result()
|
|
|
if not condition_result:
|
|
|
raise ConditionFailed(
|
|
|
'Condition is failed',
|
|
|
lineno=self.stream.current.lineno
|
|
|
)
|
|
|
else:
|
|
|
raise TemplateSyntaxError('Name is expected in calculate tag.',
|
|
|
lineno=self.stream.current.lineno)
|
|
|
expect_comma_flag = True
|
|
|
# dictionary_node = nodes.Dict(pairs_list)
|
|
|
# save_node = self.call_method('save_parameters',
|
|
|
# [dictionary_node,
|
|
|
# nodes.ContextReference()],
|
|
|
# lineno=lineno)
|
|
|
# return nodes.Output([save_node], lineno=lineno)
|
|
|
return nodes.Output(pairs_list, lineno=lineno)
|
|
|
|
|
|
def check_parameter(self, parameter_name, parameter_value, context):
|
|
|
parameters_object = context.parent['__parameters__']
|
|
|
if not self.parameters_checker:
|
|
|
template_type = context.parent['__template_type__']
|
|
|
chroot_path = context.parent['__datavars__'].main.cl_chroot_path
|
|
|
self.parameters_checker = TemplateParametersChecker(
|
|
|
template_type,
|
|
|
chroot_path=chroot_path
|
|
|
)
|
|
|
parameters_object._new_template = True
|
|
|
elif not parameters_object._new_template:
|
|
|
|
|
|
print('pair = {0}: {1}'.format(parameter_name, parameter_value))
|
|
|
|
|
|
|
|
|
return ''
|
|
|
|
|
|
def get_condition_result(self):
|
|
|
'''Метод для разбора условий из тега calculate.'''
|
|
|
condition_list = []
|
|
|
# собираем исходный код условия из токенов.
|
|
|
# вероятно, следует придумать лучший способ.
|
|
|
while (self.stream.current.type != 'block_end' and
|
|
|
self.stream.current.type != 'comma'):
|
|
|
if self.stream.current.type == 'string':
|
|
|
condition_list.append("'{}'".format(
|
|
|
self.stream.current.value
|
|
|
))
|
|
|
elif self.stream.current.type == 'dot':
|
|
|
self.stream.skip(1)
|
|
|
if self.stream.current.type == 'name':
|
|
|
next_name = '.' + self.stream.current.value
|
|
|
else:
|
|
|
raise TemplateSyntaxError(
|
|
|
'Variable name is not correct.',
|
|
|
lineno=self.stream.current.lineno
|
|
|
)
|
|
|
condition_list[-1] = condition_list[-1] + next_name
|
|
|
else:
|
|
|
condition_list.append(
|
|
|
str(self.stream.current.value)
|
|
|
)
|
|
|
self.stream.skip(1)
|
|
|
|
|
|
condition = ' '.join(condition_list)
|
|
|
|
|
|
# компилируем исходный код условия и получаем результат его вычисления.
|
|
|
cond_expr = self.environment.compile_expression(condition)
|
|
|
condition_result = cond_expr(__datavars__=self._datavars)
|
|
|
return condition_result
|
|
|
|
|
|
def save_variable(self, variable_name, right_value, target_file, context):
|
|
|
'''Метод для сохранения значений переменных указанных в теге save.'''
|
|
|
# временная реализация.
|
|
|
datavars = context.parent['__datavars__']
|
|
|
module_name = variable_name[0]
|
|
|
namespaces = variable_name[1:-1]
|
|
|
variable_name = variable_name[-1]
|
|
|
|
|
|
if module_name in datavars:
|
|
|
variables_module = datavars[module_name]
|
|
|
for namespace in namespaces:
|
|
|
if namespace not in variables_module:
|
|
|
variables_module[namespace] = Variables()
|
|
|
variables_module = variables_module[namespace]
|
|
|
variables_module[variable_name] = right_value
|
|
|
else:
|
|
|
AttributeError("Unknown variables module '{}'".
|
|
|
format(module_name))
|
|
|
return ''
|
|
|
|
|
|
def get_parameter_node(self):
|
|
|
'''Метод для разбра параметров, содержащихся в теге calculate.'''
|
|
|
lineno = self.stream.current.lineno
|
|
|
parameter_name = self.stream.expect('name').value
|
|
|
parameter_name_node = nodes.Const(parameter_name, lineno=lineno)
|
|
|
if self.stream.skip_if('assign'):
|
|
|
parameter_value = self.stream.current.value
|
|
|
parameter_rvalue = self.parser.parse_expression(with_condexpr=True)
|
|
|
if parameter_name == 'env':
|
|
|
# если параметр env -- обновляем множенство значений env
|
|
|
# контекста вo время парсинга.
|
|
|
env_names = parameter_value.split(',')
|
|
|
for name in env_names:
|
|
|
CalculateContext._env_set.add(name.strip())
|
|
|
else:
|
|
|
parameter_rvalue = nodes.Const(True, lineno=lineno)
|
|
|
# return nodes.Pair(parameter_name_node, parameter_rvalue)
|
|
|
return (parameter_name_node, parameter_rvalue)
|
|
|
|
|
|
def save_parameters(cls, parameters_dictionary, context):
|
|
|
'''Метод для сохранения значений параметров.'''
|
|
|
context.parent['__parameters__'].set_parameters(parameters_dictionary)
|
|
|
return ''
|
|
|
|
|
|
|
|
|
@contextfunction
|
|
|
def pkg(context, * args):
|
|
|
if args:
|
|
|
package_atom = args[0]
|
|
|
else:
|
|
|
package_atom = context.parent['__parameters__']['package']
|
|
|
return package_atom
|
|
|
|
|
|
|
|
|
class TemplateEngine:
|
|
|
def __init__(self, directory_path='/',
|
|
|
datavars_module=Variables(),
|
|
|
appends_set=set()):
|
|
|
TemplateParametersChecker._inspect_formats_package()
|
|
|
|
|
|
CalculateExtension._parameters_set =\
|
|
|
TemplateParametersChecker.available_parameters
|
|
|
CalculateExtension._datavars = datavars_module
|
|
|
|
|
|
self.available_formats = TemplateParametersChecker.available_formats
|
|
|
self.available_appends = set()
|
|
|
|
|
|
self._datavars_module = datavars_module
|
|
|
self._parameters_object = ParametersContainer()
|
|
|
self._template_text = ''
|
|
|
|
|
|
self.environment = Environment(loader=FileSystemLoader(directory_path),
|
|
|
extensions=[CalculateExtension])
|
|
|
self.environment.context_class = CalculateContext
|
|
|
|
|
|
def change_directory(self, directory_path):
|
|
|
'''Метод для смены директории в загрузчике.'''
|
|
|
self.environment.loader = FileSystemLoader(directory_path)
|
|
|
|
|
|
def process_template(self, template_path, env=set()):
|
|
|
'''Метод для обработки файла шаблона, расположенного по указанному
|
|
|
пути.'''
|
|
|
CalculateContext._env_set = env
|
|
|
template = self.environment.get_template(template_path)
|
|
|
self._parameters_object = ParametersContainer(parameters_dictionary={})
|
|
|
self._template_text = template.render(
|
|
|
__datavars__=self._datavars_module,
|
|
|
__parameters__=self._parameters_object
|
|
|
)
|
|
|
|
|
|
def process_template_from_string(self, string, template_type, env=set()):
|
|
|
'''Метод для обработки текста шаблона.'''
|
|
|
CalculateContext._env_set = env
|
|
|
template = self.environment.from_string(string)
|
|
|
self._parameters_object = ParametersContainer(parameters_dictionary={})
|
|
|
self._template_text = template.render(
|
|
|
__datavars__=self._datavars_module,
|
|
|
__parameters__=self._parameters_object,
|
|
|
__template_type__=template_type,
|
|
|
__DIR__=DIR, __FILE__=FILE
|
|
|
)
|
|
|
|
|
|
@property
|
|
|
def parameters(self):
|
|
|
return self._parameters_object.parameters
|
|
|
|
|
|
@property
|
|
|
def template_text(self):
|
|
|
text, self._template_text = self._template_text, ''
|
|
|
return text
|
