Source Code for Module AIPSUtil

 1  # Copyright (C) 2005 Joint Institute for VLBI in Europe 
 2  # 
 3  # This program is free software; you can redistribute it and/or modify 
 4  # it under the terms of the GNU General Public License as published by 
 5  # the Free Software Foundation; either version 2 of the License, or 
 6  # (at your option) any later version. 
 7  # 
 8  # This program is distributed in the hope that it will be useful, 
 9  # but WITHOUT ANY WARRANTY; without even the implied warranty of 
10  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
11  # GNU General Public License for more details. 
12   
13  # You should have received a copy of the GNU General Public License 
14  # along with this program; if not, write to the Free Software 
15  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA 
16   
17  """ 
18   
19  This module provides some utility functions for dealing with AIPS. 
20   
21  """ 
22   
23 -def ehex(n, width=0, padding=None): 
24      """Convert a number into "extended hex". 
25   
26      Returns the extended hex presentation for N, optionally padding it 
27      up to WIDTH with PADDING.""" 
28   
29      ehex_digits = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ' 
30      result = '' 
31   
32      while n > 0: 
33          result = ehex_digits[n % len(ehex_digits)] + result 
34          n /= len(ehex_digits) 
35          width -= 1 
36          continue 
37   
38      # Pad if requested to do so. 
39      if padding != None: 
40          while width > 0: 
41              result = str(padding) + result 
42              width -= 1 
43              continue 
44          pass 
45   
46      return result 
47