From 33de02bc04595ec56fa8ef7c3200dba63c05297b Mon Sep 17 00:00:00 2001
From: Walter Bender <walter@walter-laptop.(none)>
Date: Thu, 12 Feb 2009 21:58:53 +0000
Subject: finishing up merge from TAPortfolio

---
(limited to 'tajail.py')

diff --git a/tajail.py b/tajail.py
new file mode 100644
index 0000000..b17190a
--- /dev/null
+++ b/tajail.py
@@ -0,0 +1,37 @@
+#Copyright (c) 2007-9, Playful Invention Company.
+
+#Permission is hereby granted, free of charge, to any person obtaining a copy
+#of this software and associated documentation files (the "Software"), to deal
+#in the Software without restriction, including without limitation the rights
+#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+#copies of the Software, and to permit persons to whom the Software is
+#furnished to do so, subject to the following conditions:
+
+#The above copyright notice and this permission notice shall be included in
+#all copies or substantial portions of the Software.
+
+#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+#THE SOFTWARE.
+
+# a naive approach to running myfun in a jail
+import re
+from time import *
+from math import *
+from numpy.oldnumeric import *
+from numpy.fft import *
+
+def myfunc(lc, f, x):
+    # check to make sure no import calls are made
+    myf = "def f(x): return " + re.sub("import","",f)
+    userdefined = {}
+    try:
+        exec myf in globals(), userdefined
+        return userdefined.values()[0](x)
+    except:
+        return None
+
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