Package translate :: Package misc :: Module stdiotell
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Source Code for Module translate.misc.stdiotell

 1  #!/usr/bin/env python 
 2  # -*- coding: utf-8 -*- 
 3  #  
 4  # Copyright 2006 Zuza Software Foundation 
 5  #  
 6  # This file is part of translate. 
 7  # 
 8  # translate is free software; you can redistribute it and/or modify 
 9  # it under the terms of the GNU General Public License as published by 
10  # the Free Software Foundation; either version 2 of the License, or 
11  # (at your option) any later version. 
12  #  
13  # translate is distributed in the hope that it will be useful, 
14  # but WITHOUT ANY WARRANTY; without even the implied warranty of 
15  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
16  # GNU General Public License for more details. 
17  # 
18  # You should have received a copy of the GNU General Public License 
19  # along with translate; if not, write to the Free Software 
20  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
21   
22  """A wrapper for sys.stdout etc that provides tell() for current position""" 
23   
24 -class StdIOWrapper:
25 - def __init__(self, stream):
26 self.stream = stream 27 self.pos = 0 28 self.closed = 0
29
30 - def __getattr__(self, attrname, default=None):
31 return getattr(self.stream, attrname, default)
32
33 - def close(self):
34 if not self.closed: 35 self.closed = 1 36 self.stream.close()
37
38 - def seek(self, pos, mode = 0):
39 raise ValueError, "I/O operation on closed file"
40
41 - def tell(self):
42 if self.closed: 43 raise ValueError, "I/O operation on closed file" 44 return self.pos
45
46 - def write(self, s):
47 if self.closed: 48 raise ValueError, "I/O operation on closed file" 49 self.stream.write(s) 50 self.pos += len(s)
51
52 - def writelines(self, lines):
53 if self.closed: 54 raise ValueError, "I/O operation on closed file" 55 self.stream.writelines(lines) 56 self.pos += len("".join(lines))
57