use decimal instead of float

client/electrum.py

@@ -18,6 +18,7 @@
 
 
 import sys, base64, os, re, hashlib, socket, getpass, copy, operator, ast
+from decimal import Decimal
 
 try:
     import ecdsa  
@@ -383,7 +384,9 @@ class Wallet:
              self.change_addresses, self.status, self.history, 
              self.labels, self.addressbook) = sequence
         except:
-            raise BaseException("version error.")
+            # it is safer to exit immediately
+            print "Error; could not parse wallet."
+            exit(1)
         if self.version != WALLET_VERSION:
             raise BaseException("Wallet version error.\nPlease move your balance to a new wallet.\nSee the release notes for more informations.")
         self.update_tx_history()
@@ -490,8 +493,6 @@ class Wallet:
     def choose_inputs_outputs( self, to_addr, amount, fee, password):
         """ todo: minimize tx size """
 
-        amount = int( 1e8*amount )
-        fee = int( 1e8*fee )
         total = 0 
         inputs = []
         for addr in self.addresses:
@@ -609,7 +610,7 @@ class Wallet:
     def mktx(self, to_address, amount, label, password, fee=None):
         if not self.is_valid(to_address):
             return False, "Invalid address"
-        if fee is None: fee = self.fee
+        if fee is None: fee = int( self.fee )
         try:
             inputs, outputs = wallet.choose_inputs_outputs( to_address, amount, fee, password )
             if not inputs:
@@ -720,9 +721,9 @@ if __name__ == '__main__':
     if cmd in ['payto', 'mktx']:
         try:
             to_address = args[1]
-            amount = float(args[2])
+            amount = int( 100000000 * Decimal(args[2]) )
             label = ' '.join(args[3:])
-            if options.tx_fee: options.tx_fee = float(options.tx_fee)
+            if options.tx_fee: options.tx_fee = int( 100000000 * Decimal(options.tx_fee) )
         except:
             firstarg = cmd
             cmd = 'help'

client/gui.py

@@ -23,14 +23,17 @@ import pygtk
 pygtk.require('2.0')
 import gtk, gobject
 import pyqrnative
+from decimal import Decimal
 
 gtk.gdk.threads_init()
 APP_NAME = "Electrum"
 
 def format_satoshis(x):
-    xx = ("%f"%(x*1e-8)).rstrip('0')
+    xx = str( Decimal(x) /100000000 )
-    if xx[-1] =='.': xx+="00"
+    #xx = ("%f"%(x*1e-8)).rstrip('0')
-    if xx[-2] =='.': xx+="0"
+    if not '.' in xx: xx = xx + '.'
+    if len(xx) > 0 and xx[-1] =='.': xx+="00"
+    if len(xx) > 1 and xx[-2] =='.': xx+="0"
     return xx
 
 def numbify(entry, is_int = False):
@@ -201,7 +204,7 @@ def run_settings_dialog(wallet, is_create, is_recovery, parent):
         fee_label.set_size_request(150,10)
         fee_label.show()
         fee.pack_start(fee_label,False, False, 10)
-        fee_entry.set_text("%f"%(wallet.fee))
+        fee_entry.set_text( str( Decimal(wallet.fee) /100000000 ) )
         fee_entry.connect('changed', numbify, False)
         fee_entry.show()
         fee.pack_start(fee_entry,False,False, 10)
@@ -243,7 +246,7 @@ def run_settings_dialog(wallet, is_create, is_recovery, parent):
         if is_recovery:
             gap = int(gap)
         if not is_create:
-            fee = float(fee)
+            fee = int( 100000000 * Decimal(fee) )
             gap = int(gap)
     except:
         show_message("error")
@@ -582,7 +585,7 @@ class BitcoinGUI:
             return
 
         try:
-            amount = float(amount_entry.get_text())
+            amount = int( Decimal(amount_entry.get_text()) * 100000000 )
         except:
             show_message( "invalid amount" )
             return