fixed the backup script path problems

pylons_app/lib/backup_manager.py

@@ -1,53 +1,54 b''
 import logging
 from mercurial import config
 import tarfile
 import os
 import datetime
 import sys
 logging.basicConfig(level = logging.DEBUG,
                     format = "%(asctime)s %(levelname)-5.5s %(message)s")
 
 class BackupManager(object):
     def __init__(self):
 
+        cur_dir = os.path.realpath(__file__)
         dn = os.path.dirname
-        self.backup_file_path = os.path.join(dn(dn(dn(__file__))), 'data')
+        self.backup_file_path = os.path.join(dn(dn(dn(cur_dir))), 'data')
         cfg = config.config()
         try:
-            cfg.read(os.path.join(dn(dn(dn(__file__))), 'hgwebdir.config'))
+            cfg.read(os.path.join(dn(dn(dn(cur_dir))), 'hgwebdir.config'))
         except IOError:
             logging.error('Could not read hgwebdir.config')
             sys.exit()
         self.set_repos_path(cfg.items('paths'))
         logging.info('starting backup for %s', self.repos_path)
         logging.info('backup target %s', self.backup_file_path)
 
         if not os.path.isdir(self.repos_path):
             raise Exception('Not a valid directory in %s' % self.repos_path)
 
     def set_repos_path(self, paths):
         repos_path = paths[0][1].split('/')
         if repos_path[-1] in ['*', '**']:
             repos_path = repos_path[:-1]
         if repos_path[0] != '/':
             repos_path[0] = '/'
         self.repos_path = os.path.join(*repos_path)
 
     def backup_repos(self):
         today = datetime.datetime.now().weekday() + 1
         bckp_file = os.path.join(self.backup_file_path,
                                  "mercurial_repos.%s.tar.gz" % today)
         tar = tarfile.open(bckp_file, "w:gz")
 
         for dir in os.listdir(self.repos_path):
             logging.info('backing up %s', dir)
             tar.add(os.path.join(self.repos_path, dir), dir)
         tar.close()
         logging.info('finished backup of mercurial repositories')
 
 
 if __name__ == "__main__":
     bm = BackupManager()
     bm.backup_repos()