X-Git-Url: http://dolda2000.com/gitweb/?a=blobdiff_plain;f=wrw%2Futil.py;h=f70680e752ea95e77d0f04ca043d4fd777a56b08;hb=6963e4742e2d7e5eb9f783a5fc0380e18d8e2cb6;hp=5ee002b0702699c5bb0f5fa78367e82f328356d2;hpb=23d36b18a53d242f5d3c8d9bc2831a0e75900d94;p=wrw.git

diff --git a/wrw/util.py b/wrw/util.py
index 5ee002b..f70680e 100644
--- a/wrw/util.py
+++ b/wrw/util.py
@@ -1,25 +1,68 @@
-import inspect
-import req, dispatch, session, form
+import inspect, math
+import req, dispatch, session, form, resp, proto
 
 def wsgiwrap(callable):
     def wrapper(env, startreq):
-        return dispatch.handle(req.origrequest(env), startreq, callable)
+        return dispatch.handleenv(env, startreq, callable)
+    wrapper.__wrapped__ = callable
     return wrapper
 
 def formparams(callable):
+    spec = inspect.getargspec(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]
+        for i in xrange(len(spec.args) - (len(spec.defaults) if spec.defaults else 0)):
+            if spec.args[i] not in args:
+                raise resp.httperror(400, "Missing parameter", ("The query parameter `", resp.h.code(spec.args[i]), "' is required but not supplied."))
         return callable(**args)
+    wrapper.__wrapped__ = callable
     return wrapper
 
-def persession(data = None):
+class funplex(object):
+    def __init__(self, *funs, **nfuns):
+        self.dir = {}
+        self.dir.update(((self.unwrap(fun).__name__, fun) for fun in funs))
+        self.dir.update(nfuns)
+
+    @staticmethod
+    def unwrap(fun):
+        while hasattr(fun, "__wrapped__"):
+            fun = fun.__wrapped__
+        return fun
+
+    def __call__(self, req):
+        if req.pathinfo == "":
+            raise resp.redirect(req.uriname + "/")
+        if req.pathinfo[:1] != "/":
+            raise resp.notfound()
+        p = req.pathinfo[1:]
+        if p == "":
+            p = "__index__"
+            bi = 1
+        else:
+            p = p.partition("/")[0]
+            bi = len(p) + 1
+        if p in self.dir:
+            return self.dir[p](req.shift(bi))
+        raise resp.notfound()
+
+    def add(self, fun):
+        self.dir[self.unwrap(fun).__name__] = fun
+        return fun
+
+    def name(self, name):
+        def dec(fun):
+            self.dir[name] = fun
+            return fun
+        return dec
+
+def persession(data=None):
     def dec(callable):
         def wrapper(req):
             sess = session.get(req)
@@ -31,12 +74,45 @@ def persession(data = None):
                         sess[data] = data()
                     sess[callable] = callable(data)
             return sess[callable].handle(req)
+        wrapper.__wrapped__ = callable
         return wrapper
     return dec
 
+class preiter(object):
+    __slots__ = ["bk", "bki", "_next"]
+    end = object()
+    def __init__(self, real):
+        self.bk = real
+        self.bki = iter(real)
+        self._next = None
+        self.next()
+
+    def __iter__(self):
+        return self
+
+    def next(self):
+        if self._next is self.end:
+            raise StopIteration()
+        ret = self._next
+        try:
+            self._next = next(self.bki)
+        except StopIteration:
+            self._next = self.end
+        return ret
+
+    def close(self):
+        if hasattr(self.bk, "close"):
+            self.bk.close()
+
+def pregen(callable):
+    def wrapper(*args, **kwargs):
+        return preiter(callable(*args, **kwargs))
+    wrapper.__wrapped__ = callable
+    return wrapper
+
 class sessiondata(object):
     @classmethod
-    def get(cls, req, create = True):
+    def get(cls, req, create=True):
         sess = cls.sessdb().get(req)
         with sess.lock:
             try:
@@ -178,3 +254,10 @@ class specdirty(sessiondata):
                 ss[i] = specslot.unbound
             else:
                 ss[i] = val
+
+def datecheck(req, mtime):
+    if "If-Modified-Since" in req.ihead:
+        rtime = proto.phttpdate(req.ihead["If-Modified-Since"])
+        if rtime is not None and rtime >= math.floor(mtime):
+            raise resp.unmodified()
+    req.ohead["Last-Modified"] = proto.httpdate(mtime)