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, DatabaseIndex, 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     last_shown_idx = DatabaseIndex('last_shown')
  31     flag_idx = DatabaseIndex('flag')
  32
  33
  34 db_dirs = []
  35 try:
  36     xsetbg_db_path = xsetbg_conf.get('xsetbg', 'database')
  37 except:
  38     xsetbg_db_path = None
  39
  40 if not xsetbg_db_path:
  41     if 'XDG_CACHE_HOME' in os.environ:
  42         db_dirs.append(os.environ['XDG_CACHE_HOME'])
  43     home_cache = os.path.expanduser('~/.cache')
  44     if home_cache not in db_dirs:
  45         db_dirs.append(home_cache)
  46     db_dirs.append(os.path.dirname(os.path.abspath(__file__)))
  47
  48     for d in db_dirs:
  49         xsetbg_db_path = os.path.join(d, 'xsetbg.sqlite')
  50         if os.path.exists(xsetbg_db_path):
  51             break
  52
  53 if xsetbg_db_path:
  54     sqlhub.processConnection = \
  55         connectionForURI('sqlite:///%s' % xsetbg_db_path)
  56     try:
  57         XSetBg.select()[0]
  58     except IndexError:
  59         xsetbg_db = XSetBg  # Table exists but is empty
  60     except dberrors.Error:
  61         xsetbg_db = None
  62     else:
  63         xsetbg_db = XSetBg
  64 else:
  65     xsetbg_db = None
  66
  67 if __name__ == '__main__':
  68     print "DB dirs:", db_dirs
  69     print "DB file:", xsetbg_db_path