Merge branch 'master' into python3

[wrw.git] / wrw / util.py

diff --git a/wrw/util.py b/wrw/util.py
index a0e4095..e338e2c 100644 (file)
--- a/wrw/util.py
+++ b/wrw/util.py
@@ -1,10 +1,24 @@
-import req, dispatch, session
+import inspect
+from . import req, dispatch, session, form
 
 def wsgiwrap(callable):
     def wrapper(env, startreq):
         return dispatch.handle(req.origrequest(env), startreq, callable)
     return wrapper
 
+def formparams(callable):
+    def wrapper(req):
+        data = form.formdata(req)
+        spec = inspect.getargspec(callable)
+        args = dict(data.items())
+        args["req"] = req
+        if not spec.keywords:
+            for arg in list(args):
+                if arg not in spec.args:
+                    del args[arg]
+        return callable(**args)
+    return wrapper
+
 def persession(data = None):
     def dec(callable):
         def wrapper(req):
@@ -22,12 +36,14 @@ def persession(data = None):
 
 class sessiondata(object):
     @classmethod
-    def get(cls, req):
+    def get(cls, req, create = True):
         sess = cls.sessdb().get(req)
         with sess.lock:
             try:
                 return sess[cls]
             except KeyError:
+                if not create:
+                    return None
                 ret = cls(req)
                 sess[cls] = ret
                 return ret
@@ -39,9 +55,10 @@ class sessiondata(object):
 class autodirty(sessiondata):
     @classmethod
     def get(cls, req):
-        ret = super(autodirty, cls).get(req)
+        ret = super().get(req)
         if "_is_dirty" not in ret.__dict__:
             ret.__dict__["_is_dirty"] = False
+        return ret
 
     def sessfrozen(self):
         self.__dict__["_is_dirty"] = False
@@ -50,11 +67,25 @@ class autodirty(sessiondata):
         return self._is_dirty
 
     def __setattr__(self, name, value):
-        super(autodirty, self).__setattr__(name, value)
+        super().__setattr__(name, value)
         if "_is_dirty" in self.__dict__:
             self.__dict__["_is_dirty"] = True
 
     def __delattr__(self, name):
-        super(autodirty, self).__delattr__(name, value)
+        super().__delattr__(name, value)
         if "_is_dirty" in self.__dict__:
             self.__dict__["_is_dirty"] = True
+
+class manudirty(object):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.__dirty = False
+
+    def sessfrozen(self):
+        self.__dirty = False
+
+    def sessdirty(self):
+        return self.__dirty
+
+    def dirty(self):
+        self.__dirty = True