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  #   ˆl–ßi~”Ji?u2 \¸®õ1hßÃ„ì¸ïÂÁ      315_•I|¥‰ÓMjqØ‚¦ ë<óo¬ÃÂ ?÷     """Provides access to stored IDLE configuration information.

Refer to the comments at the beginning of config-main.def for a description of
the available configuration files and the design implemented to update user
configuration information.  In particular, user configuration choices which
duplicate the defaults will be removed from the user's configuration files,
and if a file becomes empty, it will be deleted.

The contents of the user files may be altered using the Options/Configure IDLE
menu to access the configuration GUI (configDialog.py), or manually.

Throughout this module there is an emphasis on returning useable defaults
when a problem occurs in returning a requested configuration value back to
idle. This is to allow IDLE to continue to function in spite of errors in
the retrieval of config information. When a default is returned instead of
a requested config value, a message is printed to stderr to aid in
configuration problem notification and resolution.

"""
import os
import sys
import string
from idlelib import macosxSupport
from ConfigParser import ConfigParser, NoOptionError, NoSectionError

class InvalidConfigType(Exception): pass
class InvalidConfigSet(Exception): pass
class InvalidFgBg(Exception): pass
class InvalidTheme(Exception): pass

class IdleConfParser(ConfigParser):
    """
    A ConfigParser specialised for idle configuration file handling
    """
    def __init__(self, cfgFile, cfgDefaults=None):
        """
        cfgFile - string, fully specified configuration file name
        """
        self.file=cfgFile
        ConfigParser.__init__(self,defaults=cfgDefaults)

    def Get(self, section, option, type=None, default=None, raw=False):
        """
        Get an option value for given section/option or return default.
        If type is specified, return as type.
        """
        if not self.has_option(section, option):
            return default
        if type=='bool':
            return self.getboolean(section, option)
        elif type=='int':
            return self.getint(section, option)
        else:
            return self.get(section, option, raw=raw)

    def GetOptionList(self,section):
        """
        Get an option list for given section
        """
        if self.has_section(section):
            return self.options(section)
        else:  #return a default value
            return []

    def Load(self):
        """
        Load the configuration file from disk
        """
        self.read(self.file)

class IdleUserConfParser(IdleConfParser):
    """
    IdleConfigParser specialised for user configuration handling.
    """

    def AddSection(self,section):
        """
        if section doesn't exist, add it
        """
        if not self.has_section(section):
            self.add_section(section)

    def RemoveEmptySections(self):
        """
        remove any sections that have no options
        """
        for section in self.sections():
            if not self.GetOptionList(section):
                self.remove_section(section)

    def IsEmpty(self):
        """
        Remove empty sections and then return 1 if parser has no sections
        left, else return 0.
        """
        self.RemoveEmptySections()
        if self.sections():
            return 0
        else:
            return 1

    def RemoveOption(self,section,option):
        """
        If section/option exists, remove it.
        Returns 1 if option was removed, 0 otherwise.
        """
        if self.has_section(section):
            return self.remove_option(section,option)

    def SetOption(self,section,option,value):
        """
        Sets option to value, adding section if required.
        Returns 1 if option was added or changed, otherwise 0.
        """
        if self.has_option(section,option):
            if self.get(section,option)==value:
                return 0
            else