1 files changed, 38 insertions, 0 deletions
diff --git a/test_20121121/vonneumann.py b/test_20121121/vonneumann.py
new file mode 100755
index 0000000..3e71e9d
--- /dev/null
+++ b/test_20121121/vonneumann.py
@@ -0,0 +1,38 @@
+#!/usr/bin/env python
+
+import sys
+
+def pairs(fin):
+    for c in fin.read():
+        bits = bin(ord(c))[2:].zfill(8)
+        while len(bits) >= 2:
+            yield bits[0:2]
+            bits = bits[2:]
+
+def main(fin, fout):
+
+    bits = ""
+
+    for p in pairs(fin):
+        if p == "11" or p == "00":
+            continue
+        bits += p[0]
+        if len(bits) == 8:
+            fout.write(chr(int(bits, 2)))
+            bits = ""
+
+
+if __name__=="__main__":
+    if len(sys.argv) == 1:
+        fin = sys.stdin
+        fout = sys.stdout
+    elif len(sys.argv) == 3:
+        fin = open(sys.argv[1], 'r')
+        fout = open(sys.argv[2], 'w')
+        print "working..."
+    else:
+        print "ERROR: wrong number of arguments (in_file + out_file OR none)"
+
+    main(fin, fout)
+    fin.close()
+    fout.close()