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#!/usr/bin/env python3
"""
Convert the X11 locale.alias file into a mapping dictionary suitable
for locale.py.
Written by Marc-Andre Lemburg <mal@genix.com>, 2004-12-10.
"""
import locale
import sys
_locale = locale
# Location of the X11 alias file.
LOCALE_ALIAS = '/usr/share/X11/locale/locale.alias'
# Location of the glibc SUPPORTED locales file.
SUPPORTED = '/usr/share/i18n/SUPPORTED'
def parse(filename):
with open(filename, encoding='latin1') as f:
lines = list(f)
data = {}
for line in lines:
line = line.strip()
if not line:
continue
if line[:1] == '#':
continue
locale, alias = line.split()
# Fix non-standard locale names, e.g. ks_IN@devanagari.UTF-8
if '@' in alias:
alias_lang, _, alias_mod = alias.partition('@')
if '.' in alias_mod:
alias_mod, _, alias_enc = alias_mod.partition('.')
alias = alias_lang + '.' + alias_enc + '@' + alias_mod
# Strip ':'
if locale[-1] == ':':
locale = locale[:-1]
# Lower-case locale
locale = locale.lower()
# Ignore one letter locale mappings (except for 'c')
if len(locale) == 1 and locale != 'c':
continue
# Normalize encoding, if given
if '.' in locale:
lang, encoding = locale.split('.')[:2]
encoding = encoding.replace('-', '')
encoding = encoding.replace('_', '')
locale = lang + '.' + encoding
data[locale] = alias
return data
def parse_glibc_supported(filename):
with open(filename, encoding='latin1') as f:
lines = list(f)
data = {}
for line in lines:
line = line.strip()
if not line:
continue
if line[:1] == '#':
continue
line = line.replace('/', ' ').strip()
line = line.rstrip('\\').rstrip()
words = line.split()
if len(words) != 2:
continue
alias, alias_encoding = words
# Lower-case locale
locale = alias.lower()
# Normalize encoding, if given
if '.' in locale:
lang, encoding = locale.split('.')[:2]
encoding = encoding.replace('-', '')
encoding = encoding.replace('_', '')
locale = lang + '.' + encoding
# Add an encoding to alias
alias, _, modifier = alias.partition('@')
alias = _locale._replace_encoding(alias, alias_encoding)
if modifier and not (modifier == 'euro' and alias_encoding == 'ISO-8859-15'):
alias += '@' + modifier
data[locale] = alias
return data
def pprint(data):
items = sorted(data.items())
for k, v in items:
print(' %-40s%a,' % ('%a:' % k, v))
def print_differences(data, olddata):
items = sorted(olddata.items())
for k, v in items:
if k not in data:
print('# removed %a' % k)
elif olddata[k] != data[k]:
print('# updated %a -> %a to %a' % \
(k, olddata[k], data[k]))
# Additions are not mentioned
def optimize(data):
locale_alias = locale.locale_alias
locale.locale_alias = data.copy()
for k, v in data.items():
del locale.locale_alias[k]
if locale.normalize(k) != v:
locale.locale_alias[k] = v
newdata = locale.locale_alias
errors = check(data)
locale.locale_alias = locale_alias
if errors:
sys.exit(1)
return newdata
def check(data):
# Check that all alias definitions from the X11 file
# are actually mapped to the correct alias locales.
errors = 0
for k, v in data.items():
if locale.normalize(k) != v:
print('ERROR: %a -> %a != %a' % (k, locale.normalize(k), v),
file=sys.stderr)
errors += 1
return errors
if __name__ == '__main__':
import argparse
parser = argparse.ArgumentParser()
parser.add_argument('--locale-alias', default=LOCALE_ALIAS,
help='location of the X11 alias file '
'(default: %a)' % LOCALE_ALIAS)
parser.add_argument('--glibc-supported', default=SUPPORTED,
help='location of the glibc SUPPORTED locales file '
'(default: %a)' % SUPPORTED)
args = parser.parse_args()
data = locale.locale_alias.copy()
data.update(parse_glibc_supported(args.glibc_supported))
data.update(parse(args.locale_alias))
while True:
# Repeat optimization while the size is decreased.
n = len(data)
data = optimize(data)
if len(data) == n:
break
print_differences(data, locale.locale_alias)
print()
print('locale_alias = {')
pprint(data)
print('}')