94 lines
2.6 KiB
Python
94 lines
2.6 KiB
Python
from collections import OrderedDict
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__all__ = (
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"KconfigFile",
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)
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class KConfigEntry(object):
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__slots__ = 'name', 'value', 'comments'
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def __init__(self, name, value, comments=None):
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self.name, self.value = name, value
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self.comments = comments or []
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def __eq__(self, other):
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return self.name == other.name and self.value == other.value
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def __hash__(self):
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return hash(self.name) | hash(self.value)
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def __repr__(self):
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return ('<{}({!r}, {!r}, {!r})>'
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.format(self.__class__.__name__, self.name, self.value,
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self.comments))
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def __str__(self):
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return 'CONFIG_{}={}'.format(self.name, self.value)
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def write(self):
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for comment in self.comments:
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yield '#. ' + comment
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yield str(self)
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class KConfigEntryTristate(KConfigEntry):
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__slots__ = ()
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VALUE_NO = False
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VALUE_YES = True
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VALUE_MOD = object()
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def __init__(self, name, value, comments=None):
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if value == 'n' or value is None:
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value = self.VALUE_NO
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elif value == 'y':
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value = self.VALUE_YES
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elif value == 'm':
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value = self.VALUE_MOD
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else:
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raise NotImplementedError
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super(KConfigEntryTristate, self).__init__(name, value, comments)
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def __str__(self):
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if self.value is self.VALUE_MOD:
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return 'CONFIG_{}=m'.format(self.name)
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if self.value:
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return 'CONFIG_{}=y'.format(self.name)
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return '# CONFIG_{} is not set'.format(self.name)
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class KconfigFile(OrderedDict):
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def __str__(self):
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ret = []
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for i in self.str_iter():
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ret.append(i)
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return '\n'.join(ret) + '\n'
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def read(self, f):
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for line in iter(f.readlines()):
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line = line.strip()
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if line.startswith("CONFIG_"):
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i = line.find('=')
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option = line[7:i]
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value = line[i + 1:]
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self.set(option, value)
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elif line.startswith("# CONFIG_"):
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option = line[9:-11]
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self.set(option, 'n')
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elif line.startswith("#") or not line:
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pass
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else:
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raise RuntimeError("Can't recognize %s" % line)
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def set(self, key, value):
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if value in ('y', 'm', 'n'):
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entry = KConfigEntryTristate(key, value)
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else:
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entry = KConfigEntry(key, value)
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self[key] = entry
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def str_iter(self):
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for key, value in self.items():
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yield str(value)
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