mdw@git.distorted.org.uk Git - stgit/blob - stgit/config.py

   1 """Handles the Stacked GIT configuration files
   2 """
   3
   4 __copyright__ = """
   5 Copyright (C) 2005, 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, re
  22 from stgit import basedir
  23 from stgit.exception import *
  24 from stgit.run import *
  25
  26 class GitConfigException(StgException):
  27     pass
  28
  29 class GitConfig:
  30     __defaults={
  31         'stgit.autoresolved':   'no',
  32         'stgit.smtpserver':     'localhost:25',
  33         'stgit.smtpdelay':      '5',
  34         'stgit.pullcmd':        'git pull',
  35         'stgit.fetchcmd':       'git fetch',
  36         'stgit.pull-policy':    'pull',
  37         'stgit.autoimerge':     'no',
  38         'stgit.keeporig':       'yes',
  39         'stgit.keepoptimized':  'no',
  40         'stgit.extensions':     '.ancestor .current .patched',
  41         'stgit.shortnr':         '5'
  42         }
  43
  44     __cache={}
  45
  46     def get(self, name):
  47         if self.__cache.has_key(name):
  48             return self.__cache[name]
  49         try:
  50             value = Run('git', 'repo-config', '--get', name).output_one_line()
  51         except RunException:
  52             value = self.__defaults.get(name, None)
  53         self.__cache[name] = value
  54         return value
  55
  56     def getall(self, name):
  57         if self.__cache.has_key(name):
  58             return self.__cache[name]
  59         values = Run('git', 'repo-config', '--get-all', name
  60                      ).returns([0, 1]).output_lines()
  61         self.__cache[name] = values
  62         return values
  63
  64     def getint(self, name):
  65         value = self.get(name)
  66         if value.isdigit():
  67             return int(value)
  68         else:
  69             raise GitConfigException, 'Value for "%s" is not an integer: "%s"' % (name, value)
  70
  71     def rename_section(self, from_name, to_name):
  72         """Rename a section in the config file. Silently do nothing if
  73         the section doesn't exist."""
  74         Run('git', 'repo-config', '--rename-section', from_name, to_name
  75             ).returns([0, 1]).run()
  76         self.__cache.clear()
  77
  78     def remove_section(self, name):
  79         """Remove a section in the config file. Silently do nothing if
  80         the section doesn't exist."""
  81         Run('git', 'repo-config', '--remove-section', name
  82             ).returns([0, 1]).discard_stderr().discard_output()
  83         self.__cache.clear()
  84
  85     def set(self, name, value):
  86         Run('git', 'repo-config', name, value).run()
  87         self.__cache[name] = value
  88
  89     def unset(self, name):
  90         Run('git', 'repo-config', '--unset', name)
  91         self.__cache[name] = None
  92
  93     def sections_matching(self, regexp):
  94         """Takes a regexp with a single group, matches it against all
  95         config variables, and returns a list whose members are the
  96         group contents, for all variable names matching the regexp.
  97         """
  98         result = []
  99         for line in Run('git', 'repo-config', '--get-regexp', '"^%s$"' % regexp
 100                         ).returns([0, 1]).output_lines():
 101             m = re.match('^%s ' % regexp, line)
 102             if m:
 103                 result.append(m.group(1))
 104         return result
 105
 106 config=GitConfig()
 107
 108 def config_setup():
 109     global config
 110
 111     # Set the PAGER environment to the config value (if any)
 112     pager = config.get('stgit.pager')
 113     if pager:
 114         os.environ['PAGER'] = pager
 115     # FIXME: handle EDITOR the same way ?
 116
 117 class ConfigOption:
 118     """Delayed cached reading of a configuration option.
 119     """
 120     def __init__(self, section, option):
 121         self.__section = section
 122         self.__option = option
 123         self.__value = None
 124
 125     def __str__(self):
 126         if not self.__value:
 127             self.__value = config.get(self.__section + '.' + self.__option)
 128         return self.__value
 129
 130
 131 # cached extensions
 132 __extensions = None
 133
 134 def file_extensions():
 135     """Returns a dictionary with the conflict file extensions
 136     """
 137     global __extensions
 138
 139     if not __extensions:
 140         cfg_ext = config.get('stgit.extensions').split()
 141         if len(cfg_ext) != 3:
 142             raise CmdException, '"extensions" configuration error'
 143
 144         __extensions = { 'ancestor': cfg_ext[0],
 145                          'current':  cfg_ext[1],
 146                          'patched':  cfg_ext[2] }
 147
 148     return __extensions