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63 lines
1.4 KiB
Python
63 lines
1.4 KiB
Python
"""
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MS-DOS structures.
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Documentation:
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- File attributes:
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http://www.cs.colorado.edu/~main/cs1300/include/ddk/winddk.h
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"""
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from hachoir.field import StaticFieldSet
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from hachoir.field import Bit, NullBits
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_FIELDS = (
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(Bit, "read_only"),
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(Bit, "hidden"),
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(Bit, "system"),
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(NullBits, "reserved[]", 1),
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(Bit, "directory"),
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(Bit, "archive"),
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(Bit, "device"),
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(Bit, "normal"),
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(Bit, "temporary"),
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(Bit, "sparse_file"),
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(Bit, "reparse_file"),
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(Bit, "compressed"),
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(Bit, "offline"),
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(Bit, "dont_index_content"),
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(Bit, "encrypted"),
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)
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class MSDOSFileAttr16(StaticFieldSet):
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"""
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MSDOS 16-bit file attributes
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"""
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format = _FIELDS + ((NullBits, "reserved[]", 1),)
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_text_keys = (
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# Sort attributes by importance
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"directory", "read_only", "compressed",
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"hidden", "system",
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"normal", "device",
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"temporary", "archive")
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def createValue(self):
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mode = []
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for name in self._text_keys:
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if self[name].value:
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if 4 <= len(mode):
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mode.append("...")
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break
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else:
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mode.append(name)
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if mode:
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return ", ".join(mode)
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else:
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return "(none)"
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class MSDOSFileAttr32(MSDOSFileAttr16):
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"""
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MSDOS 32-bit file attributes
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"""
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format = _FIELDS + ((NullBits, "reserved[]", 17),)
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