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py/libs/mschap3/U32.py

@@ -0,0 +1,150 @@
+#    U32.py implements 32-bit unsigned int class for Python
+#    Version 1.0
+#    Copyright (C) 2001-2002  Dmitry Rozmanov
+#
+#    This library is free software; you can redistribute it and/or
+#    modify it under the terms of the GNU Lesser General Public
+#    License as published by the Free Software Foundation; either
+#    version 2.1 of the License, or (at your option) any later version.
+#
+#    This library is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#    Lesser General Public License for more details.
+#
+#    You should have received a copy of the GNU Lesser General Public
+#    License along with this library; if not, write to the Free Software
+#    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+#    e-mail: dima@xenon.spb.ru
+#
+#====================================================================
+
+C = 0x1000000000
+
+#--------------------------------------------------------------------
+def norm(n):
+    return n & 0xFFFFFFFF
+
+#====================================================================
+class U32:
+    v = 0
+
+    #--------------------------------------------------------------------
+    def __init__(self, value = 0):
+        self.v = C + norm(abs(int(value)))
+
+    #--------------------------------------------------------------------
+    def set(self, value = 0):
+        self.v = C + norm(abs(int(value)))
+
+    #--------------------------------------------------------------------
+    def __repr__(self):
+        return hex(norm(self.v))
+
+    #--------------------------------------------------------------------
+    def __long__(self): return int(norm(self.v))
+
+    #--------------------------------------------------------------------
+    def __int__(self): return int(norm(self.v))
+
+    __index__ = __int__
+
+    #--------------------------------------------------------------------
+    def __chr__(self): return chr(norm(self.v))
+
+    #--------------------------------------------------------------------
+    def __add__(self, b):
+        r = U32()
+        r.v = C + norm(self.v + b.v)
+        return r
+
+    #--------------------------------------------------------------------
+    def __sub__(self, b):
+        r = U32()
+        if self.v < b.v:
+            r.v = C + norm(0x100000000 - (b.v - self.v))
+        else: r.v = C + norm(self.v - b.v)
+        return r
+
+    #--------------------------------------------------------------------
+    def __mul__(self, b):
+        r = U32()
+        r.v = C + norm(self.v * b.v)
+        return r
+
+    #--------------------------------------------------------------------
+    def __div__(self, b):
+        r = U32()
+        r.v = C + (norm(self.v) / norm(b.v))
+        return r
+
+    #--------------------------------------------------------------------
+    def __mod__(self, b):
+        r = U32()
+        r.v = C + (norm(self.v) % norm(b.v))
+        return r
+
+    #--------------------------------------------------------------------
+    def __neg__(self): return U32(self.v)
+
+    #--------------------------------------------------------------------
+    def __pos__(self): return U32(self.v)
+
+    #--------------------------------------------------------------------
+    def __abs__(self): return U32(self.v)
+
+    #--------------------------------------------------------------------
+    def __invert__(self):
+        r = U32()
+        r.v = C + norm(~self.v)
+        return r
+
+    #--------------------------------------------------------------------
+    def __lshift__(self, b):
+        r = U32()
+        r.v = C + norm(self.v << b)
+        return r
+
+    #--------------------------------------------------------------------
+    def __rshift__(self, b):
+        r = U32()
+        r.v = C + (norm(self.v) >> b)
+        return r
+
+    #--------------------------------------------------------------------
+    def __and__(self, b):
+        r = U32()
+        r.v = C + norm(self.v & b.v)
+        return r
+
+    #--------------------------------------------------------------------
+    def __or__(self, b):
+        r = U32()
+        r.v = C + norm(self.v | b.v)
+        return r
+
+    #--------------------------------------------------------------------
+    def __xor__(self, b):
+        r = U32()
+        r.v = C + norm(self.v ^ b.v)
+        return r
+
+    #--------------------------------------------------------------------
+    def __not__(self):
+        return U32(not norm(self.v))
+
+    #--------------------------------------------------------------------
+    def truth(self):
+        return norm(self.v)
+
+    #--------------------------------------------------------------------
+    def __cmp__(self, b):
+        if norm(self.v) > norm(b.v): return 1
+        elif norm(self.v) < norm(b.v): return -1
+        else: return 0
+
+    #--------------------------------------------------------------------
+    def __bool__(self):
+        return norm(self.v)
+