print-filename.py

   1 #! /usr/bin/env python
   2 """Print background filename
   3
   4 Print the filename of the current or previous background image.
   5
   6 This file is a part of XSetBg.
   7
   8 """
   9
  10 __version__ = "$Revision$"[11:-2]
  11 __revision__ = "$Id$"[5:-2]
  12 __date__ = "$Date$"[7:-2]
  13
  14 __author__ = "Oleg Broytman <phd@phdru.name>"
  15 __copyright__ = "Copyright (C) 2004-2010 PhiloSoft Design"
  16 __license__ = "GNU GPL"
  17
  18
  19 import sys, os, shelve
  20
  21
  22 def usage(code=0):
  23    sys.stderr.write("Usage: %s [-o|--old]\n" % sys.argv[0])
  24    sys.exit(code)
  25
  26
  27 def get_args():
  28    from getopt import getopt, GetoptError
  29
  30    try:
  31       options, arguments = getopt(sys.argv[1:], "ho", ["help", "old"])
  32    except GetoptError:
  33       usage(1)
  34
  35    old = False
  36
  37    for option, value in options:
  38       if option in ("-h", "--help"):
  39          usage()
  40       elif option in ("-o", "--old"):
  41          old = True
  42       else:
  43          usage(2)
  44
  45    if arguments:
  46       usage(3)
  47
  48    return old
  49
  50 old = get_args()
  51
  52
  53 xsetbg_dir = os.path.join(os.environ["HOME"], "lib", "xsetbg")
  54 os.chdir(xsetbg_dir)
  55
  56 global_db_name = "xsetbg.db"
  57 filename_key = "filename"
  58 old_filename_key = "old_filename"
  59
  60
  61 global_db = shelve.open(global_db_name, flag='r')
  62 if old:
  63    key = old_filename_key
  64 else:
  65    key = filename_key
  66 filename = global_db[key]
  67 global_db.close()
  68
  69 from m_lib.defenc import default_encoding
  70 filename = unicode(filename, default_encoding)
  71
  72 print filename.encode(default_encoding)