basic high level stats

read.py

@@ -16,7 +16,12 @@ assert isdir(utxo_dir)
 if filenum is not None:
     read_utxos(utxo_dir, filenum)
 else:
-    i = 0
+    i = 1
+    total_amount = 0
     while isfile(utxo_file_name(utxo_dir, i)):
-        read_utxos(utxo_dir, i)
+        amt = read_utxos(utxo_dir, i)
+        print "file: {}: amount: {}".format(i, amt)
+        total_amount += amt
         i += 1
+
+    print "total: amount: {}".format(total_amount)

utxo/util.py

@@ -12,20 +12,27 @@ def utxo_file_name(directory, i):
 def read_utxos(directory, i):
     name = utxo_file_name(directory, i)
     f = open(name, 'rb')
-    read_utxo_file(f)
+    ret = read_utxo_file(f)
     f.close()
+    return ret
 
 
 def read_utxo_file(f):
     head = f.read(16)
+
+    i = 0
+    total_amount = 0
     while head != "":
         amt, sz = struct.unpack('<QQ', head)
         script = f.read(sz)
 
         assert f.read(1) == '\n'
         print(amt, hexlify(script))
+        total_amount += amt
         head = f.read(16)
+        i += 1
 
+    return total_amount
 
 def new_utxo_file(output_dir, k):
     p = utxo_file_name(output_dir, k)