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.merger':         'diff3 -L current -L ancestor -L patched -m -E ' \
  38                                 '"%(branch1)s" "%(ancestor)s" "%(branch2)s" > "%(output)s"',
  39         'stgit.autoimerge':     'no',
  40         'stgit.keeporig':       'yes',
  41         'stgit.keepoptimized':  'no',
  42         'stgit.extensions':     '.ancestor .current .patched',
  43         'stgit.shortnr':         '5'
  44         }
  45
  46     __cache={}
  47
  48     def get(self, name):
  49         if self.__cache.has_key(name):
  50             return self.__cache[name]
  51         try:
  52             value = Run('git-repo-config', '--get', name).output_one_line()
  53         except RunException:
  54             value = self.__defaults.get(name, None)
  55         self.__cache[name] = value
  56         return value
  57
  58     def getall(self, name):
  59         if self.__cache.has_key(name):
  60             return self.__cache[name]
  61         values = Run('git-repo-config', '--get-all', name
  62                      ).returns([0, 1]).output_lines()
  63         self.__cache[name] = values
  64         return values
  65
  66     def getint(self, name):
  67         value = self.get(name)
  68         if value.isdigit():
  69             return int(value)
  70         else:
  71             raise GitConfigException, 'Value for "%s" is not an integer: "%s"' % (name, value)
  72
  73     def rename_section(self, from_name, to_name):
  74         """Rename a section in the config file. Silently do nothing if
  75         the section doesn't exist."""
  76         Run('git-repo-config', '--rename-section', from_name, to_name
  77             ).returns([0, 1]).run()
  78         self.__cache.clear()
  79
  80     def remove_section(self, name):
  81         """Remove a section in the config file. Silently do nothing if
  82         the section doesn't exist."""
  83         Run('git-repo-config', '--remove-section', name
  84             ).returns([0, 1]).discard_stderr().discard_output()
  85         self.__cache.clear()
  86
  87     def set(self, name, value):
  88         Run('git-repo-config', name, value).run()
  89         self.__cache[name] = value
  90
  91     def unset(self, name):
  92         Run('git-repo-config', '--unset', name)
  93         self.__cache[name] = None
  94
  95     def sections_matching(self, regexp):
  96         """Takes a regexp with a single group, matches it against all
  97         config variables, and returns a list whose members are the
  98         group contents, for all variable names matching the regexp.
  99         """
 100         result = []
 101         for line in Run('git-repo-config', '--get-regexp', '"^%s$"' % regexp
 102                         ).returns([0, 1]).output_lines():
 103             m = re.match('^%s ' % regexp, line)
 104             if m:
 105                 result.append(m.group(1))
 106         return result
 107
 108 config=GitConfig()
 109
 110 def config_setup():
 111     global config
 112
 113     # Set the PAGER environment to the config value (if any)
 114     pager = config.get('stgit.pager')
 115     if pager:
 116         os.environ['PAGER'] = pager
 117     # FIXME: handle EDITOR the same way ?
 118
 119 class ConfigOption:
 120     """Delayed cached reading of a configuration option.
 121     """
 122     def __init__(self, section, option):
 123         self.__section = section
 124         self.__option = option
 125         self.__value = None
 126
 127     def __str__(self):
 128         if not self.__value:
 129             self.__value = config.get(self.__section + '.' + self.__option)
 130         return self.__value
 131
 132
 133 # cached extensions
 134 __extensions = None
 135
 136 def file_extensions():
 137     """Returns a dictionary with the conflict file extensions
 138     """
 139     global __extensions
 140
 141     if not __extensions:
 142         cfg_ext = config.get('stgit.extensions').split()
 143         if len(cfg_ext) != 3:
 144             raise CmdException, '"extensions" configuration error'
 145
 146         __extensions = { 'ancestor': cfg_ext[0],
 147                          'current':  cfg_ext[1],
 148                          'patched':  cfg_ext[2] }
 149
 150     return __extensions