option to set gui language from command line

electrum

@@ -138,6 +138,7 @@ def arg_parser():
     parser.add_option("-p", "--proxy", dest="proxy", default=None, help="set proxy [type:]host[:port], where type is socks4,socks5 or http")
     parser.add_option("-v", "--verbose", action="store_true", dest="verbose", default=False, help="show debugging information")
     parser.add_option("-P", "--portable", action="store_true", dest="portable", default=False, help="portable wallet")
+    parser.add_option("-L", "--lang", dest="language", default=None, help="defaut language used in GUI")
     return parser
 
 
@@ -146,6 +147,7 @@ if __name__ == '__main__':
     parser = arg_parser()
     options, args = parser.parse_args()
     set_verbosity(options.verbose)
+    set_language(options.language)
 
     # config is an object passed to the various constructors (wallet, interface, gui)
     if 'ANDROID_DATA' in os.environ:

lib/__init__.py

@@ -1,5 +1,6 @@
 from version import ELECTRUM_VERSION
 from util import format_satoshis, print_msg, print_error, set_verbosity
+from i18n import set_language
 from wallet import Wallet, WalletSynchronizer
 from verifier import WalletVerifier
 from interface import Interface, pick_random_server, DEFAULT_SERVERS

lib/i18n.py

@@ -16,10 +16,23 @@
 # You should have received a copy of the GNU General Public License
 # along with this program. If not, see <http://www.gnu.org/licenses/>.
 
-import gettext
+import gettext, os
 
-LOCALE_DIR = '/usr/share/locale'
-#LOCALE_DIR = './locale'
+if os.path.exists('./locale'):
+    LOCALE_DIR = './locale'
+else:
+    LOCALE_DIR = '/usr/share/locale'
+
+print LOCALE_DIR
 
 language = gettext.translation('electrum', LOCALE_DIR, fallback = True)
-_ = language.ugettext
+
+def _(x):
+    global language
+    return language.ugettext(x)
+
+def set_language(x):
+    global language
+    if x: language = gettext.translation('electrum', LOCALE_DIR, fallback = True, languages=[x])
+    
+