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from itertools import chain |
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from pyprint.ClosableObject import ClosableObject |
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from coalib.settings.Section import Section |
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class ConfWriter(ClosableObject): |
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def __init__(self, |
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file_name, |
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key_value_delimiters=('=',), |
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comment_seperators=('#',), |
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key_delimiters=(',', ' '), |
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section_name_surroundings=None, |
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section_override_delimiters=(".",), |
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unsavable_keys=("save",)): |
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section_name_surroundings = section_name_surroundings or {"[": "]"} |
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ClosableObject.__init__(self) |
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self.__file_name = file_name |
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self.__file = open(self.__file_name, "w") |
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self.__key_value_delimiters = key_value_delimiters |
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self.__comment_seperators = comment_seperators |
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self.__key_delimiters = key_delimiters |
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self.__section_name_surroundings = section_name_surroundings |
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self.__section_override_delimiters = section_override_delimiters |
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self.__unsavable_keys = unsavable_keys |
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self.__wrote_newline = True |
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self.__closed = False |
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self.__key_delimiter = self.__key_delimiters[0] |
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self.__key_value_delimiter = self.__key_value_delimiters[0] |
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(self.__section_name_surrounding_beg, |
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self.__section_name_surrounding_end) = ( |
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tuple(self.__section_name_surroundings.items())[0]) |
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def _close(self): |
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self.__file.close() |
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def write_sections(self, sections): |
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assert not self.__closed |
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self.__wrote_newline = True |
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for section in sections: |
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self.write_section(sections[section]) |
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def write_section(self, section): |
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assert not self.__closed |
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if not isinstance(section, Section): |
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raise TypeError |
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self.__write_section_name(section.name) |
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keys = [] |
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val = None |
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section_iter = section.__iter__(ignore_defaults=True) |
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try: |
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while True: |
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setting = section[next(section_iter)] |
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if (str(setting) == val and |
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not self.is_comment(setting.key) and |
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( |
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(setting.key not in self.__unsavable_keys) or |
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(not setting.from_cli))): |
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keys.append(setting.key) |
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elif ((setting.key not in self.__unsavable_keys) or |
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(not setting.from_cli)): |
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self.__write_key_val(keys, val) |
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keys = [setting.key] |
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val = str(setting) |
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except StopIteration: |
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self.__write_key_val(keys, val) |
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def __write_section_name(self, name): |
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assert not self.__closed |
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if not self.__wrote_newline: |
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self.__file.write("\n") |
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self.__file.write(self.__section_name_surrounding_beg + name + |
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self.__section_name_surrounding_end + '\n') |
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self.__wrote_newline = False |
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def __write_key_val(self, keys, val): |
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assert not self.__closed |
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if keys == []: |
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return |
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if all(self.is_comment(key) for key in keys): |
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self.__file.write(val + "\n") |
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self.__wrote_newline = val == "" |
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return |
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# Add escape characters as appropriate |
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keys = [key.replace('\\', '\\\\') for key in keys] |
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for delim in chain(self.__key_value_delimiters, |
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self.__comment_seperators, |
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self.__key_delimiters, |
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self.__section_override_delimiters): |
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keys = [key.replace(delim, '\\' + delim) for key in keys] |
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val = val.replace('\\', '\\\\') |
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for delim in self.__comment_seperators: |
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val = val.replace(delim, '\\' + delim) |
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self.__file.write((self.__key_delimiter + " ").join(keys) + " " + |
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self.__key_value_delimiter + " " + val + "\n") |
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self.__wrote_newline = False |
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@staticmethod |
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def is_comment(key): |
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return key.lower().startswith("comment") |
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