Merge commit 'kha/safe'

[stgit] / stgit / config.py

diff --git a/stgit/config.py b/stgit/config.py
index 3bbbd0d3e4e53049cb1aead21af908bc3536674a..bfb117df044d291984ddee2e1ab867d27eea5fe0 100644 (file)
--- a/stgit/config.py
+++ b/stgit/config.py
@@ -18,16 +18,141 @@ along with this program; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 """
 
-import os, ConfigParser
+import os, re
+from stgit import basedir
+from stgit.exception import *
+from stgit.run import *
 
+class GitConfigException(StgException):
+    pass
 
-if 'GIT_DIR' in os.environ:
-    __git_dir = os.environ['GIT_DIR']
-else:
-    __git_dir = '.git'
+class GitConfig:
+    __defaults={
+        'stgit.smtpserver':    'localhost:25',
+        'stgit.smtpdelay':     '5',
+        'stgit.pullcmd':       'git pull',
+        'stgit.fetchcmd':      'git fetch',
+        'stgit.pull-policy':   'pull',
+        'stgit.autoimerge':    'no',
+        'stgit.keepoptimized': 'no',
+        'stgit.extensions':    '.ancestor .current .patched',
+        'stgit.shortnr': '5',
+        'stgit.pager':  'less'
+        }
 
-config = ConfigParser.RawConfigParser()
+    __cache = None
 
-config.readfp(file('/etc/stgitrc'))
-config.read(os.path.expanduser('~/.stgitrc'))
-config.read(os.path.join(__git_dir, 'stgitrc'))
+    def load(self):
+        """Load the whole configuration in __cache unless it has been
+        done already."""
+        if self.__cache is not None:
+            return
+        self.__cache = {}
+        lines = Run('git', 'config', '--null', '--list').raw_output()
+        for line in filter(None, lines.split('\0')):
+            key, value = line.split('\n', 1)
+            self.__cache.setdefault(key, []).append(value)
+
+    def get(self, name):
+        self.load()
+        if name not in self.__cache:
+            self.__cache[name] = [self.__defaults.get(name, None)]
+        return self.__cache[name][-1]
+
+    def getall(self, name):
+        self.load()
+        try:
+            return self.__cache[name]
+        except KeyError:
+            return []
+
+    def getint(self, name):
+        value = self.get(name)
+        if value == None:
+            return None
+        elif value.isdigit():
+            return int(value)
+        else:
+            raise GitConfigException, 'Value for "%s" is not an integer: "%s"' % (name, value)
+
+    def rename_section(self, from_name, to_name):
+        """Rename a section in the config file. Silently do nothing if
+        the section doesn't exist."""
+        Run('git', 'config', '--rename-section', from_name, to_name
+            ).returns([0, 1, 128]).run()
+        self.__cache.clear()
+
+    def remove_section(self, name):
+        """Remove a section in the config file. Silently do nothing if
+        the section doesn't exist."""
+        Run('git', 'config', '--remove-section', name
+            ).returns([0, 1, 128]).discard_stderr().discard_output()
+        self.__cache.clear()
+
+    def set(self, name, value):
+        Run('git', 'config', name, value).run()
+        self.__cache[name] = value
+
+    def unset(self, name):
+        Run('git', 'config', '--unset', name).run()
+        self.__cache[name] = [None]
+
+    def sections_matching(self, regexp):
+        """Takes a regexp with a single group, matches it against all
+        config variables, and returns a list whose members are the
+        group contents, for all variable names matching the regexp.
+        """
+        result = []
+        for line in Run('git', 'config', '--get-regexp', '"^%s$"' % regexp
+                        ).returns([0, 1]).output_lines():
+            m = re.match('^%s ' % regexp, line)
+            if m:
+                result.append(m.group(1))
+        return result
+
+    def get_colorbool(self, name, stdout_is_tty):
+        """Invoke 'git config --get-colorbool' and return the result."""
+        return Run('git', 'config', '--get-colorbool', name,
+                   stdout_is_tty).output_one_line()
+        
+config=GitConfig()
+
+def config_setup():
+    global config
+
+    os.environ.setdefault('PAGER', config.get('stgit.pager'))
+    os.environ.setdefault('LESS', '-FRSX')
+    # FIXME: handle EDITOR the same way ?
+
+class ConfigOption:
+    """Delayed cached reading of a configuration option.
+    """
+    def __init__(self, section, option):
+        self.__section = section
+        self.__option = option
+        self.__value = None
+
+    def __str__(self):
+        if not self.__value:
+            self.__value = config.get(self.__section + '.' + self.__option)
+        return self.__value
+
+
+# cached extensions
+__extensions = None
+
+def file_extensions():
+    """Returns a dictionary with the conflict file extensions
+    """
+    global __extensions
+
+    if not __extensions:
+        cfg_ext = config.get('stgit.extensions').split()
+        if len(cfg_ext) != 3:
+            raise CmdException, '"extensions" configuration error'
+
+        __extensions = { 'ancestor': cfg_ext[0],
+                         'current':  cfg_ext[1],
+                         'patched':  cfg_ext[2] }
+
+    return __extensions