mirror of
https://github.com/Pardus-LiderAhenk/ahenk
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105 lines
3.2 KiB
Python
105 lines
3.2 KiB
Python
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import re
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class Line(object):
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"""A line in an /etc/fstab line.
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Lines may or may not have a filesystem specification in them. The
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has_filesystem method tells the user whether they do or not; if they
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do, the attributes device, directory, fstype, options, dump, and
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fsck contain the values of the corresponding fields, as instances of
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the sub-classes of the LinePart class. For non-filesystem lines,
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the attributes have the None value.
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Lines may or may not be syntactically correct. If they are not,
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they are treated as as non-filesystem lines.
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"""
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# Lines split this way to shut up coverage.py.
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attrs = ("ws1", "device", "ws2", "directory", "ws3", "fstype")
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attrs += ("ws4", "options", "ws5", "dump", "ws6", "fsck", "ws7")
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def __init__(self, raw):
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self.dict = {}
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self.raw = raw
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def __getattr__(self, name):
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if name in self.dict:
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return self.dict[name]
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else:
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raise AttributeError(name)
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def __setattr__(self, name, value):
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forbidden = ("dict", "dump", "fsck", "options")
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if name not in forbidden and name in self.dict:
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if self.dict[name] is None:
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raise Exception("Cannot set attribute %s when line dies not "
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"contain filesystem specification" % name)
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self.dict[name] = value
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else:
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object.__setattr__(self, name, value)
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def get_dump(self):
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return int(self.dict["dump"])
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def set_dump(self, value):
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self.dict["dump"] = str(value)
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dump = property(get_dump, set_dump)
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def get_fsck(self):
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return int(self.dict["fsck"])
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def set_fsck(self, value):
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self.dict["fsck"] = str(value)
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fsck = property(get_fsck, set_fsck)
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def get_options(self):
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return self.dict["options"].split(",")
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def set_options(self, list):
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self.dict["options"] = ",".join(list)
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options = property(get_options, set_options)
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def set_raw(self, raw):
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match = False
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if raw.strip() != "" and not raw.strip().startswith("#"):
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pat = r"^(?P<ws1>\s*)"
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pat += r"(?P<device>\S*)"
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pat += r"(?P<ws2>\s+)"
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pat += r"(?P<directory>\S+)"
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pat += r"(?P<ws3>\s+)"
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pat += r"(?P<fstype>\S+)"
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pat += r"(?P<ws4>\s+)"
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pat += r"(?P<options>\S+)"
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pat += r"(?P<ws5>\s+)"
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pat += r"(?P<dump>\d+)"
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pat += r"(?P<ws6>\s+)"
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pat += r"(?P<fsck>\d+)"
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pat += r"(?P<ws7>\s*)$"
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match = re.match(pat, raw)
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if match:
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self.dict.update((attr, match.group(attr)) for attr in self.attrs)
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if not match:
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self.dict.update((attr, None) for attr in self.attrs)
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self.dict["raw"] = raw
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def get_raw(self):
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if self.has_filesystem():
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return "".join(self.dict[attr] for attr in self.attrs)
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else:
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return self.dict["raw"]
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raw = property(get_raw, set_raw)
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def has_filesystem(self):
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"""Does this line have a filesystem specification?"""
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return self.device is not None
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