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     StringCol, UnicodeCol, IntCol, BoolCol, dberrors
  15 from xsetbg_conf import xsetbg_conf
  16
  17
  18 class SqliteSequence(SQLObject):
  19     class sqlmeta:
  20         idName = 'rowid'
  21     name = StringCol(unique=True)
  22     seq = IntCol()
  23
  24
  25 class XSetBg(SQLObject):
  26     full_name = UnicodeCol(alternateID=True)
  27     last_shown = IntCol(default=None)  # timestamp
  28     flag = BoolCol(default=None)
  29
  30
  31 db_dirs = []
  32 try:
  33     xsetbg_db_path = xsetbg_conf.get('xsetbg', 'database')
  34 except:
  35     xsetbg_db_path = None
  36
  37 if not xsetbg_db_path:
  38     if 'XDG_CACHE_HOME' in os.environ:
  39         db_dirs.append(os.environ['XDG_CACHE_HOME'])
  40     home_cache = os.path.expanduser('~/.cache')
  41     if home_cache not in db_dirs:
  42         db_dirs.append(home_cache)
  43     db_dirs.append(os.path.dirname(os.path.abspath(__file__)))
  44
  45     for d in db_dirs:
  46         xsetbg_db_path = os.path.join(d, 'xsetbg.sqlite')
  47         if os.path.exists(xsetbg_db_path):
  48             break
  49
  50 if xsetbg_db_path:
  51     sqlhub.processConnection = \
  52         connectionForURI('sqlite:///%s' % xsetbg_db_path)
  53     try:
  54         XSetBg.select()[0]
  55     except IndexError:
  56         xsetbg_db = XSetBg  # Table exists but is empty
  57     except dberrors.Error:
  58         xsetbg_db = None
  59     else:
  60         xsetbg_db = XSetBg
  61 else:
  62     xsetbg_db = None
  63
  64 if __name__ == '__main__':
  65     print "DB dirs:", db_dirs
  66     print "DB file:", xsetbg_db_path