Fix processInputs() so that it no longer stomps on things like :records or :int:list

doc/CHANGES.rst

@@ -11,6 +11,10 @@ http://docs.zope.org/zope2/releases/.
 Bugs Fixed
 ++++++++++
 
+- Five's processInputs() would stomp on :list or :tuple values that contained
+  ints or other non-strings, would clear out :records entirely, and would not
+  do anything for :record fields.
+
 - LP #143261: The (very old-fashioned) Zope2.debug interactive request
   debugger still referred to the toplevel module ``Zope``, which was 
   renamed to ``Zope2`` a long time ago.

src/Products/Five/browser/decode.py

@@ -32,23 +32,40 @@ def _decode(text, charsets):
             pass
     return text
 
+def processInputValue(value, charsets):
+    """Recursively look for values (e.g. elements of lists, tuples or dicts)
+    and attempt to decode.
+    """
+    
+    if isinstance(value, list):
+        return [processInputValue(v, charsets) for v in value]
+    elif isinstance(value, tuple):
+        return tuple([processInputValue(v, charsets) for v in value])
+    elif isinstance(value, dict):
+        for k, v in value.items():
+            value[k] = processInputValue(v, charsets)
+        return value
+    elif isinstance(value, str):
+        return _decode(value, charsets)
+    else:
+        return value
+
 def processInputs(request, charsets=None):
+    """Process the values in request.form to decode strings to unicode, using
+    the passed-in list of charsets. If none are passed in, look up the user's
+    preferred charsets. The default is to use utf-8.
+    """
+    
     if charsets is None:
-        envadapter = IUserPreferredCharsets(request)
-        charsets = envadapter.getPreferredCharsets() or ['utf-8']
-
+        envadapter = IUserPreferredCharsets(request, None)
+        if envadapter is None:
+            charsets = ['utf-8']
+        else:
+            charsets = envadapter.getPreferredCharsets() or ['utf-8']
+    
     for name, value in request.form.items():
         if not (isCGI_NAME(name) or name.startswith('HTTP_')):
-            if isinstance(value, str):
-                request.form[name] = _decode(value, charsets)
-            elif isinstance(value, list):
-                request.form[name] = [ _decode(val, charsets)
-                                       for val in value
-                                       if isinstance(val, str) ]
-            elif isinstance(value, tuple):
-                request.form[name] = tuple([ _decode(val, charsets)
-                                             for val in value
-                                             if isinstance(val, str) ])
+            request.form[name] = processInputValue(value, charsets)
 
 def setPageEncoding(request):
     """Set the encoding of the form page via the Content-Type header.

src/Products/Five/browser/tests/test_decode.py

@@ -46,6 +46,42 @@ def test_processInputs():
       >>> processInputs(request, charsets)
       >>> request.form['foo'] == (u'f\xf6\xf6',)
       True
+     
+    Ints in lists are not lost::
+
+      >>> request.form['foo'] = [1, 2, 3]
+      >>> processInputs(request, charsets)
+      >>> request.form['foo'] == [1, 2, 3]
+      True
+    
+    Ints in tuples are not lost::
+
+      >>> request.form['foo'] = (1, 2, 3,)
+      >>> processInputs(request, charsets)
+      >>> request.form['foo'] == (1, 2, 3)
+      True
+    
+    Mixed lists work:
+
+      >>> request.form['foo'] = [u'f\xf6\xf6'.encode('iso-8859-1'), 2, 3]
+      >>> processInputs(request, charsets)
+      >>> request.form['foo'] == [u'f\xf6\xf6', 2, 3]
+      True
+    
+    Mixed dicts work:
+    
+      >>> request.form['foo'] = {'foo': u'f\xf6\xf6'.encode('iso-8859-1'), 'bar': 2}
+      >>> processInputs(request, charsets)
+      >>> request.form['foo'] == {'foo': u'f\xf6\xf6', 'bar': 2}
+      True
+    
+    Deep recursion works:
+    
+      >>> request.form['foo'] = [{'foo': u'f\xf6\xf6'.encode('iso-8859-1'), 'bar': 2}, {'foo': u"one", 'bar': 3}]
+      >>> processInputs(request, charsets)
+      >>> request.form['foo'] == [{'foo': u'f\xf6\xf6', 'bar': 2}, {'foo': u"one", 'bar': 3}]
+      True
+    
     """
 
 def test_suite():