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