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