Source Code for Module AIPS

  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 the AIPSDisk class and serves as a container for 
 20  several AIPS-related defaults.  It provides some basic infrastructure 
 21  used by the AIPSTask and AIPSData modules. 
 22   
 23  """ 
 24   
 25  # Generic Python stuff. 
 26  import os, sys 
 27   
 28  # Generic AIPS functionality. 
 29  from AIPSUtil import ehex 
 30   
 31  # Debug log.  Define before including proxies. 
 32  debuglog = None 
 33   
 34  # Available proxies. 
 35  import LocalProxy 
 36  from xmlrpclib import ServerProxy 
 37   
 38   
 39 -class AIPSDisk: 
 40       
 41      """Class representing a (possibly remote) AIPS disk.  An instance 
 42         of this class stores an AIPS disk number and the URL of the 
 43         proxy through which it can be accessed.  For local AIPS disks 
 44         the URL will be None.""" 
 45   
 46 -    def __init__(self, url, disk): 
 47          self.url = url 
 48          self.disk = disk 
 49          return 
 50   
 51 -    def proxy(self): 
 52          """Return the proxy through which this AIPS disk can be 
 53             accessed.""" 
 54          if self.url: 
 55              return ServerProxy(self.url, allow_none=True) 
 56          return LocalProxy 
 57   
 58      pass                                # class AIPSDisk 
 59   
 60   
 61  # Default AIPS user ID. 
 62  userno = 0 
 63   
 64  # List of available proxies. 
 65  proxies = [ LocalProxy ] 
 66   
 67  # AIPS disk mapping.  
 68  disks = [ None ]                        # Disk numbers are one-based. 
 69   
 70  # AIPS seems to support a maximum of 35 disks. 
 71  for disk in xrange(1, 36): 
 72      area = 'DA' + ehex(disk, 2, '0') 
 73      if not area in os.environ: 
 74          break 
 75      disks.append(AIPSDisk(None, disk)) 
 76      continue 
 77   
 78  # Message log. 
 79  log = None 
 80   
 81   
 82  # The code below is the result of a serious design flaw.  It should 
 83  # really die, but removing it will probably affect most scripts. 
 84   
 85 -class _AIPS(object): 
 86       
 87      """Backwards compatibility gunk.""" 
 88   
 89 -    def _get_userno(self): 
 90          return sys.modules[__name__].userno 
 91 -    def _set_userno(self, value): 
 92          sys.modules[__name__].userno = value 
 93      userno = property(_get_userno, _set_userno) 
 94   
 95 -    def _get_disks(self): 
 96          return sys.modules[__name__].disks 
 97 -    def _set_disks(self, value): 
 98          sys.modules[__name__].disks = value 
 99      disks = property(_get_disks, _set_disks) 
100   
101 -    def _get_log(self): 
102          return sys.modules[__name__].log 
103 -    def _set_log(self, value): 
104          sys.modules[__name__].log = value 
105      log = property(_get_log, _set_log) 
106   
107 -    def _get_debuglog(self): 
108          return sys.modules[__name__].debuglog 
109 -    def _set_debuglog(self, value): 
110          sys.modules[__name__].debuglog = value 
111      debuglog = property(_get_debuglog, _set_debuglog) 
112   
113      pass                                # class _AIPS 
114   
115  AIPS = _AIPS() 
116