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- class FileProxyMixin:
- """
- A mixin class used to forward file methods to an underlaying file
- object. The internal file object has to be called "file"::
-
- class FileProxy(FileProxyMixin):
- def __init__(self, file):
- self.file = file
- """
-
- encoding = property(lambda self: self.file.encoding)
- fileno = property(lambda self: self.file.fileno)
- flush = property(lambda self: self.file.flush)
- isatty = property(lambda self: self.file.isatty)
- newlines = property(lambda self: self.file.newlines)
- read = property(lambda self: self.file.read)
- readinto = property(lambda self: self.file.readinto)
- readline = property(lambda self: self.file.readline)
- readlines = property(lambda self: self.file.readlines)
- seek = property(lambda self: self.file.seek)
- tell = property(lambda self: self.file.tell)
- truncate = property(lambda self: self.file.truncate)
- write = property(lambda self: self.file.write)
- writelines = property(lambda self: self.file.writelines)
-
- @property
- def closed(self):
- return not self.file or self.file.closed
-
- def readable(self):
- if self.closed:
- return False
- if hasattr(self.file, 'readable'):
- return self.file.readable()
- return True
-
- def writable(self):
- if self.closed:
- return False
- if hasattr(self.file, 'writable'):
- return self.file.writable()
- return 'w' in getattr(self.file, 'mode', '')
-
- def seekable(self):
- if self.closed:
- return False
- if hasattr(self.file, 'seekable'):
- return self.file.seekable()
- return True
-
- def __iter__(self):
- return iter(self.file)
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