command line option for portable wallets

electrum

@@ -137,6 +137,7 @@ def arg_parser():
     parser.add_option("-s", "--server", dest="server", default=None, help="set server host:port:protocol, where protocol is t or h")
     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")
     return parser
 
 

lib/simple_config.py

@@ -17,12 +17,14 @@ a SimpleConfig instance then reads the wallet file.
 
         # system conf, readonly
         self.system_config = {}
-        self.read_system_config()
+        if options.get('portable') == False:
+            self.read_system_config()
 
         # user conf, writeable
         self.user_dir = user_dir()
         self.user_config = {}
-        self.read_user_config()
+        if options.get('portable') == False:
+            self.read_user_config()
 
         # command-line options
         self.options_config = options
@@ -33,7 +35,10 @@ a SimpleConfig instance then reads the wallet file.
         print_error( "path", self.path )
         if self.path:
             self.read_wallet_config(self.path)
-            
+
+        # portable wallet: use the same directory for wallet and headers file
+        if options.get('portable'):
+            self.wallet_config['blockchain_headers_path'] = os.path.dirname(self.path)