1 files changed, 39 insertions, 0 deletions
diff --git a/miasm2/core/utils.py b/miasm2/core/utils.py
new file mode 100644
index 00000000..44d1e8e2
--- /dev/null
+++ b/miasm2/core/utils.py
@@ -0,0 +1,39 @@
+import struct
+
+upck8 = lambda x: struct.unpack('B', x)[0]
+upck16 = lambda x: struct.unpack('H', x)[0]
+upck32 = lambda x: struct.unpack('I', x)[0]
+upck64 = lambda x: struct.unpack('Q', x)[0]
+pck16 = lambda x: struct.pack('H', x)
+pck32 = lambda x: struct.pack('I', x)
+pck64 = lambda x: struct.pack('Q', x)
+
+
+class Disasm_Exception(Exception):
+    pass
+
+
+def hexdump(src, length=16):
+    FILTER = ''.join(
+        [(len(repr(chr(x))) == 3) and chr(x) or '.' for x in range(256)])
+    lines = []
+    for c in xrange(0, len(src), length):
+        chars = src[c:c + length]
+        hex = ' '.join(["%02x" % ord(x) for x in chars])
+        printable = ''.join(
+            ["%s" % ((ord(x) <= 127 and FILTER[ord(x)]) or '.') for x in chars])
+        lines.append("%04x  %-*s  %s\n" % (c, length * 3, hex, printable))
+    print ''.join(lines)
+
+# stackoverflow.com/questions/2912231
+
+import collections
+
+
+class keydefaultdict(collections.defaultdict):
+
+    def __missing__(self, key):
+        if self.default_factory is None:
+            raise KeyError(key)
+        value = self[key] = self.default_factory(key)
+        return value