Reference client for Bitmessage: a P2P encrypted decentralised communication protocol:
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"""
Localization
"""
import logging
import os
import time
from bmconfigparser import BMConfigParser
logger = logging.getLogger('default')
DEFAULT_ENCODING = 'ISO8859-1'
DEFAULT_LANGUAGE = 'en_US'
DEFAULT_TIME_FORMAT = '%Y-%m-%d %H:%M:%S'
encoding = DEFAULT_ENCODING
language = DEFAULT_LANGUAGE
windowsLanguageMap = {
"ar": "arabic",
"cs": "czech",
"da": "danish",
"de": "german",
"en": "english",
"eo": "esperanto",
"fr": "french",
"it": "italian",
"ja": "japanese",
"nl": "dutch",
"no": "norwegian",
"pl": "polish",
"pt": "portuguese",
"ru": "russian",
"sk": "slovak",
"zh": "chinese",
"zh_CN": "chinese-simplified",
"zh_HK": "chinese-traditional",
"zh_SG": "chinese-simplified",
"zh_TW": "chinese-traditional"
}
try:
import locale
encoding = locale.getpreferredencoding(True) or DEFAULT_ENCODING
language = locale.getlocale()[0] or locale.getdefaultlocale()[0] or DEFAULT_LANGUAGE
except:
logger.exception('Could not determine language or encoding')
if BMConfigParser().has_option('bitmessagesettings', 'timeformat'):
time_format = BMConfigParser().get('bitmessagesettings', 'timeformat')
# Test the format string
try:
time.strftime(time_format)
except:
logger.exception('Could not format timestamp')
time_format = DEFAULT_TIME_FORMAT
else:
time_format = DEFAULT_TIME_FORMAT
# It seems some systems lie about the encoding they use so we perform
# comprehensive decoding tests
if time_format != DEFAULT_TIME_FORMAT:
try:
# Check day names
for i in xrange(7):
unicode(time.strftime(time_format, (0, 0, 0, 0, 0, 0, i, 0, 0)), encoding)
# Check month names
for i in xrange(1, 13):
unicode(time.strftime(time_format, (0, i, 0, 0, 0, 0, 0, 0, 0)), encoding)
# Check AM/PM
unicode(time.strftime(time_format, (0, 0, 0, 11, 0, 0, 0, 0, 0)), encoding)
unicode(time.strftime(time_format, (0, 0, 0, 13, 0, 0, 0, 0, 0)), encoding)
# Check DST
unicode(time.strftime(time_format, (0, 0, 0, 0, 0, 0, 0, 0, 1)), encoding)
except:
logger.exception('Could not decode locale formatted timestamp')
time_format = DEFAULT_TIME_FORMAT
encoding = DEFAULT_ENCODING
def setlocale(category, newlocale):
"""Set the locale"""
locale.setlocale(category, newlocale)
# it looks like some stuff isn't initialised yet when this is called the
# first time and its init gets the locale settings from the environment
os.environ["LC_ALL"] = newlocale
def formatTimestamp(timestamp=None, as_unicode=True):
"""Return a formatted timestamp"""
# For some reason some timestamps are strings so we need to sanitize.
if timestamp is not None and not isinstance(timestamp, int):
try:
timestamp = int(timestamp)
except:
timestamp = None
# timestamp can't be less than 0.
if timestamp is not None and timestamp < 0:
timestamp = None
if timestamp is None:
timestring = time.strftime(time_format)
else:
# In case timestamp is too far in the future
try:
timestring = time.strftime(time_format, time.localtime(timestamp))
except ValueError:
timestring = time.strftime(time_format)
if as_unicode:
return unicode(timestring, encoding)
return timestring
def getTranslationLanguage():
"""Return the user's language choice"""
userlocale = BMConfigParser().safeGet(
'bitmessagesettings', 'userlocale', 'system')
return userlocale if userlocale and userlocale != 'system' else language
def getWindowsLocale(posixLocale):
"""
Get the Windows locale
Technically this converts the locale string from UNIX to Windows format,
because they use different ones in their
libraries. E.g. "en_EN.UTF-8" to "english".
"""
if posixLocale in windowsLanguageMap:
return windowsLanguageMap[posixLocale]
if "." in posixLocale:
loc = posixLocale.split(".", 1)
if loc[0] in windowsLanguageMap:
return windowsLanguageMap[loc[0]]
if "_" in posixLocale:
loc = posixLocale.split("_", 1)
if loc[0] in windowsLanguageMap:
return windowsLanguageMap[loc[0]]
if posixLocale != DEFAULT_LANGUAGE:
return getWindowsLocale(DEFAULT_LANGUAGE)
return None