Package logilab :: Package common :: Module fileutils :: Class ProtectedFile

Class ProtectedFile

object --+    
         |    
      file --+
             |
            ProtectedFile

A special file-object class that automatically that automatically
does a 'chmod +w' when needed.

XXX: for now, the way it is done allows 'normal file-objects' to be
created during the ProtectedFile object lifetime.
One way to circumvent this would be to chmod / unchmod on each
write operation.

One other way would be to :

- catch the IOError in the __init__

- if IOError, then create a StringIO object

- each write operation writes in this StringIO object

- on close()/del(), write/append the StringIO content to the file and
  do the chmod only once

Instance Methods

file object

__init__(self, filepath, mode)
x.__init__(...) initializes x; see x.__class__.__doc__ for signature

source code

None or (perhaps) an integer

close(self)
restore mode before closing

source code

__del__(self)

source code

Inherited from file: __delattr__, __enter__, __exit__, __getattribute__, __iter__, __new__, __repr__, __setattr__, fileno, flush, isatty, next, read, readinto, readline, readlines, seek, tell, truncate, write, writelines, xreadlines

Inherited from object: __hash__, __reduce__, __reduce_ex__, __str__

Properties

Inherited from file: closed, encoding, mode, name, newlines, softspace

Inherited from object: __class__

Method Details

init(self, filepath, mode)
(Constructor)

source code

x.__init__(...) initializes x; see x.__class__.__doc__ for signature

Returns: file object
Overrides: object.__init__: (inherited documentation)

close(self)

source code

restore mode before closing

Returns: None or (perhaps) an integer
Overrides: file.close

Class ProtectedFile

__init__(self, filepath, mode) (Constructor)

close(self)

init(self, filepath, mode)
(Constructor)