stgit/basedir.py

   1 """Access to the GIT base directory
   2 """
   3
   4 __copyright__ = """
   5 Copyright (C) 2006, Catalin Marinas <catalin.marinas@gmail.com>
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License version 2 as
   9 published by the Free Software Foundation.
  10
  11 This program is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with this program; if not, write to the Free Software
  18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  19 """
  20
  21 import os
  22 from stgit.run import *
  23
  24 # GIT_DIR value cached
  25 __base_dir = None
  26
  27 def get():
  28     """Return the .git directory location
  29     """
  30     global __base_dir
  31
  32     if not __base_dir:
  33         if 'GIT_DIR' in os.environ:
  34             __base_dir = os.environ['GIT_DIR']
  35         else:
  36             try:
  37                 __base_dir = Run('git', 'rev-parse', '--git-dir').output_one_line()
  38             except RunException:
  39                 __base_dir = ''
  40
  41     return __base_dir
  42
  43 def clear_cache():
  44     """Clear the cached location of .git
  45     """
  46     global __base_dir
  47     __base_dir = None