print-filename.py

   1 #! /usr/local/bin/python -O
   2 """This file is a part of XSetBg.
   3 Author: Oleg BroytMann <phd@phd.pp.ru>
   4 Copyright (C) 2004-2006 PhiloSoft Design
   5 """
   6
   7 __version__ = "1.3.0"
   8 __author__ = "Oleg BroytMann <phd@phd.pp.ru>"
   9 __copyright__ = "Copyright (C) 2004-2006 PhiloSoft Design"
  10 __revision__ = "$Id$"[5:-2]
  11 __date__ = "$Date$"[7:-2]
  12
  13
  14 import sys, os, shelve
  15
  16 def usage(code=0):
  17    sys.stderr.write("Usage: %s [-0|--null] [-o|--old] [-w|--width] [width]\n" % sys.argv[0])
  18    sys.exit(code)
  19
  20
  21 def get_args():
  22    from getopt import getopt, GetoptError
  23
  24    try:
  25       options, arguments = getopt(sys.argv[1:], "0ow:",
  26          ["null", "old", "width="])
  27    except GetoptError:
  28       usage(1)
  29
  30    print0 = False
  31    old = False
  32    width = None
  33
  34    for option, value in options:
  35       if option in ("-h", "--help"):
  36          usage()
  37       elif option in ("-0", "--null"):
  38          print0 = True
  39       elif option in ("-o", "--old"):
  40          old = True
  41       elif option in ("-w", "--width"):
  42          width = int(value)
  43       else:
  44          usage(2)
  45
  46    if arguments:
  47       if width is not None:
  48          usage(3)
  49       elif len(arguments) > 1:
  50          usage(4)
  51       else:
  52          width = int(arguments[0])
  53
  54    return print0, old, width
  55
  56 print0, old, width = get_args()
  57
  58
  59 xsetbg_dir = os.path.join(os.environ["HOME"], "lib", "xsetbg")
  60 os.chdir(xsetbg_dir)
  61
  62 global_db_name = "xsetbg.db"
  63 filename_key = "filename"
  64 old_filename_key = "old_filename"
  65
  66 global_db = shelve.open(global_db_name, flag='r')
  67 if old:
  68    key = old_filename_key
  69 else:
  70    key = filename_key
  71 filename = global_db[key]
  72 global_db.close()
  73
  74 if width is not None:
  75    lines = []
  76    while filename:
  77       lines.append(filename[:width])
  78       filename = filename[width:]
  79    filename = "\n".join(lines)
  80
  81 sys.stdout.write(filename)
  82
  83 if print0:
  84    sys.stdout.write('\0')
  85 else:
  86    print