--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/eggs/py-1.4.0-py2.6.egg/py/_io/saferepr.py Sat Jan 08 11:20:57 2011 +0530
@@ -0,0 +1,54 @@
+import py
+import sys, os.path
+
+builtin_repr = repr
+
+reprlib = py.builtin._tryimport('repr', 'reprlib')
+
+class SafeRepr(reprlib.Repr):
+ """ subclass of repr.Repr that limits the resulting size of repr()
+ and includes information on exceptions raised during the call.
+ """
+ def repr(self, x):
+ return self._callhelper(reprlib.Repr.repr, self, x)
+
+ def repr_instance(self, x, level):
+ return self._callhelper(builtin_repr, x)
+
+ def _callhelper(self, call, x, *args):
+ try:
+ # Try the vanilla repr and make sure that the result is a string
+ s = call(x, *args)
+ except py.builtin._sysex:
+ raise
+ except:
+ cls, e, tb = sys.exc_info()
+ exc_name = getattr(cls, '__name__', 'unknown')
+ try:
+ exc_info = str(e)
+ except sysex:
+ raise
+ except:
+ exc_info = 'unknown'
+ return '<[%s("%s") raised in repr()] %s object at 0x%x>' % (
+ exc_name, exc_info, x.__class__.__name__, id(x))
+ else:
+ if len(s) > self.maxsize:
+ i = max(0, (self.maxsize-3)//2)
+ j = max(0, self.maxsize-3-i)
+ s = s[:i] + '...' + s[len(s)-j:]
+ return s
+
+def saferepr(obj, maxsize=240):
+ """ return a size-limited safe repr-string for the given object.
+ Failing __repr__ functions of user instances will be represented
+ with a short exception info and 'saferepr' generally takes
+ care to never raise exceptions itself. This function is a wrapper
+ around the Repr/reprlib functionality of the standard 2.6 lib.
+ """
+ # review exception handling
+ srepr = SafeRepr()
+ srepr.maxstring = maxsize
+ srepr.maxsize = maxsize
+ srepr.maxother = 160
+ return srepr.repr(obj)