reload_db.py

   1 #! /usr/bin/env python
   2 """Reload a dump into DB
   3
   4 This file is a part of XSetBg.
   5
   6 """
   7
   8 __author__ = "Oleg Broytman <phd@phdru.name>"
   9 __copyright__ = "Copyright (C) 2007-2015 PhiloSoft Design"
  10 __license__ = "GNU GPL"
  11
  12 import sys
  13 from sqlobject import SQLObjectNotFound
  14 from sqlobject.sqlbuilder import Insert
  15 from xsetbg_conf import xsetbg_conf
  16 from xsetbg_db import recreate_db, SQLiteMassInsert
  17
  18 fs_encoding = xsetbg_conf.get("images", "fs_encoding")
  19 dump_file = open(sys.argv[1], 'rU')
  20 xsetbg_db = recreate_db()
  21
  22
  23 def convert_str(s):
  24     if s == "None":
  25         return None
  26     else:
  27         return int(float(s))
  28
  29
  30 with SQLiteMassInsert() as txn:
  31     for line in dump_file:
  32         id, timestamp, filename = line.strip().split(None, 2)
  33         id = convert_str(id)
  34         timestamp = convert_str(timestamp)
  35         filename = filename.decode(fs_encoding)
  36         try:
  37             row = xsetbg_db.byFull_name(filename)
  38         except SQLObjectNotFound:
  39             values = {'last_shown': timestamp,
  40                       'full_name': filename.encode('utf-8')}
  41             if id:
  42                 values['id'] = id
  43             query = txn.sqlrepr(Insert(xsetbg_db.sqlmeta.table, values=values))
  44             txn.query(query)
  45         else:
  46             assert id is None or row.id == id
  47             assert row.last_shown == timestamp
  48
  49 dump_file.close()