"""

Fix $HOME and read ~/.mercurial-server

"""

import sys

import os

import os.path

import pwd

import ConfigParser

globalconfig = None

def _getConf():

    global globalconfig

    if globalconfig is None:

        globalconfig = ConfigParser.RawConfigParser()

        globalconfig.read(os.path.expanduser("~/.mercurial-server"))

    return globalconfig

def _getPath(name):

    return os.path.expanduser(_getConf().get("paths", name))

def _getPaths(name):

    return [os.path.expanduser(p)

        for p in _getConf().get("paths", name).split(":")]

def getReposPath(): return _getPath("repos")

def getAuthorizedKeysPath(): return _getPath("authorized_keys")

def configExists():

    try:

        getAuthorizedKeysPath()

        return True

    except Exception, e:

        print e

        return False

def getKeysPaths(): return _getPaths("keys")

def getAccessPaths(): return _getPaths("access")

def getEnv(): return _getConf().items("env")

def _getdefault(section, option, default, f = lambda x: x):

    conf = _getConf()

    if conf.has_option(section, option):

        return f(conf.get(section, option))

    else:

        return default

def getAllowedDots():

    return _getdefault("exceptions", "allowdots", [],

        lambda s: s.split(":"))

# Work out where we are, don't use config.

def initExe():

    global _exePath

    _exePath = os.path.dirname(os.path.abspath(sys.argv[0]))

    # Fix $HOME in case of "sudo -u hg refresh-auth"

    os.environ['HOME'] = pwd.getpwuid(os.geteuid()).pw_dir

def getExePath():

    return _exePath