#

# CDDL HEADER START

#

# The contents of this file are subject to the terms of the

# Common Development and Distribution License (the "License").

# You may not use this file except in compliance with the License.

#

# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE

# or http://www.opensolaris.org/os/licensing.

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# When distributing Covered Code, include this CDDL HEADER in each

# file and include the License file at usr/src/OPENSOLARIS.LICENSE.

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# fields enclosed by brackets "[]" replaced with your own identifying

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# Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.

#

'''

Represent Systemwide attributes such as timezone and locale 

'''

import locale

import logging

class SystemInfo(object):

    '''

    Represents miscellaneous system information

    '''

    UTC = "UTC"

    DEFAULT_LOCALE = "C"

    DEFAULT_ACTUAL_LOCALE = "C/POSIX"

    # The maximum length of the hostname should ideally come from

    # a call to os.sysconf('SC_HOST_NAME_MAX') (see similar calls

    # in user_info.py) but this currently results in a ValueError.

    MAX_HOSTNAME_LEN = 256

    def __init__(self, hostname=None, tz_region=None,

                 tz_country=None, tz_timezone=None, time_offset=0,

                 keyboard=None, locale=None, actual_lang=None):

        if hostname is None:

            hostname = SystemInfo.DEFAULT_HOSTNAME

        self.hostname = hostname

        self.tz_region = tz_region

        self.tz_country = tz_country

        self.tz_timezone = tz_timezone

        self.time_offset = time_offset

        self.keyboard = keyboard

        self.locale = locale

        self.actual_lang = actual_lang 

    def __str__(self):

        result = ["System Info:"]

        result.append("\nHostname: ")

        result.append(str(self.hostname))

        result.append("\nTZ: ")

        result.append(str(self.tz_region))

        result.append(" - ")

        result.append(str(self.tz_country))

        result.append(" - ")

        result.append(str(self.tz_timezone))

        result.append("\nTime Offset: ")

        result.append(str(self.time_offset))

        result.append("\nKeyboard: ")

        result.append(str(self.keyboard))

        result.append("\nLocale: ")

        result.append(str(self.locale))

        return "".join(result)

    @staticmethod

    def get_actual_lang(locale):

        '''Determine the human readable language from the locale

        '''

        try:

            fp = open("/usr/share/gui-install/langs_localized")

        except:

            raise ValueError(

                "Unable to open /usr/share/gui-install/langs_localized")

        for line in fp:

            key, splitter, val = line.partition(":")

            if key == locale:

                return (val.rstrip())

        raise ValueError("Unsupported language for locale " + locale)

    def determine_locale(self):

        '''Read in the language set during boot.'''

        # getdefaultlocale() returns a tuple such as ('en_US', 'UTF8')

        # The second portion of that tuple is not formatted correctly for

        # processing, so use getpreferredencoding() to get the encoding.

        language = locale.getdefaultlocale()[0]

        encoding = locale.getpreferredencoding()

        if language is None:

            self.locale = SystemInfo.DEFAULT_LOCALE

            self.actual_lang = SystemInfo.DEFAULT_ACTUAL_LOCALE

        else:

            if encoding:

                self.locale = ".".join([language, encoding])

            else:

                self.locale = language

            try:

                self.actual_lang = self.get_actual_lang(self.locale)

            except ValueError, err:

                logging.warn(err)

                self.actual_lang = self.locale