xsetbg_db.py

   1 #! /usr/bin/env python
   2 """XSetBg database
   3
   4 """
   5
   6 __author__ = "Oleg Broytman <phd@phdru.name>"
   7 __copyright__ = "Copyright (C) 2014, 2015 PhiloSoft Design"
   8 __license__ = "GNU GPL"
   9
  10 __all__ = ['xsetbg_db_path', 'xsetbg_db']
  11
  12 import os
  13 from sqlobject import SQLObject, connectionForURI, sqlhub, \
  14     UnicodeCol, IntCol, BoolCol, DatabaseIndex, dberrors
  15 from xsetbg_conf import xsetbg_conf
  16
  17
  18 class XSetBg(SQLObject):
  19     full_name = UnicodeCol(alternateID=True)
  20     last_shown = IntCol(default=None)  # timestamp
  21     flag = BoolCol(default=None)
  22
  23     last_shown_idx = DatabaseIndex('last_shown')
  24     flag_idx = DatabaseIndex('flag')
  25
  26
  27 def recreate_db():
  28     global xsetbg_db
  29     if not xsetbg_db:
  30         xsetbg_db = XSetBg
  31         xsetbg_db.createTable()
  32     return xsetbg_db
  33
  34
  35 db_dirs = []
  36 try:
  37     xsetbg_db_path = xsetbg_conf.get('xsetbg', 'database')
  38 except:
  39     xsetbg_db_path = None
  40
  41 if not xsetbg_db_path:
  42     if 'XDG_CACHE_HOME' in os.environ:
  43         db_dirs.append(os.environ['XDG_CACHE_HOME'])
  44     home_cache = os.path.expanduser('~/.cache')
  45     if home_cache not in db_dirs:
  46         db_dirs.append(home_cache)
  47     db_dirs.append(os.path.dirname(os.path.abspath(__file__)))
  48
  49     for d in db_dirs:
  50         xsetbg_db_path = os.path.join(d, 'xsetbg.sqlite')
  51         if os.path.exists(xsetbg_db_path):
  52             break
  53
  54 if xsetbg_db_path:
  55     sqlhub.processConnection = \
  56         connectionForURI('sqlite:///%s' % xsetbg_db_path)
  57     try:
  58         XSetBg.select()[0]
  59     except IndexError:
  60         xsetbg_db = XSetBg  # Table exists but is empty
  61     except dberrors.Error:
  62         xsetbg_db = None
  63     else:
  64         xsetbg_db = XSetBg
  65 else:
  66     xsetbg_db = None
  67
  68 if __name__ == '__main__':
  69     print "DB dirs:", db_dirs
  70     print "DB file:", xsetbg_db_path