Fix keyword-parameter handling bug in formparams.
[wrw.git] / wrw / resp.py
index 030d5ee..e6810b4 100644 (file)
-import dispatch, proto
+import sys, os, math
+from . import dispatch, proto, env
+from .sp import xhtml
+h = xhtml.cons()
 
 __all__ = ["skeleton", "skelfor", "setskel", "usererror"]
 
 class skeleton(object):
-    def page(self, title, content):
-        return """<?xml version="1.0" ?>
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US">
-<head>
-%s
-</head>
-<body>
-%s
-</body>
-</html>""" % (self.head(title), content)
+    def page(self, req, title, *content):
+        return xhtml.forreq(req, h.html(self.head(req, title), h.body(*content)))
 
-    def skel(self, title):
-        return """<title>%s</title>\n%s""" % (title, self.style())
+    def head(self, req, title):
+        return xhtml.head(title=title)
 
-    def style(self):
-        return ""
+    def error(self, req, message, *detail):
+        return self.page(req, message, h.h1(message), h.p(*detail))
 
-    def error(self, message, detail):
-        return self.page(message, """<h1>%s</h1>\n<p>%s</p>\n""" % (message, detail))
+    def message(self, req, message, *detail):
+        return self.page(req, message, h.h1(message), h.p(*detail))
 
-    def message(self, message, detail):
-        return self.page(message, """<h1>%s</h1>\n<p>%s</p>\n""" % (message, detail))
-
-defskel = skeleton()
+defskel = env.var(skeleton())
 
 def getskel(req):
-    return [defskel]
+    return [defskel.val]
 def skelfor(req):
     return req.item(getskel)[0]
 def setskel(req, skel):
     req.item(getskel)[0] = skel
 
 class usererror(dispatch.restart):
-    def __init__(self, message, detail):
-        super(usererror, self).__init__()
+    def __init__(self, message, *detail):
+        super().__init__()
         self.message = message
         self.detail = detail
 
     def handle(self, req):
-        return [skelfor(req).error(self.message, self.detail)]
+        return skelfor(req).error(req, self.message, *self.detail)
 
 class message(dispatch.restart):
-    def __init__(self, message, detail):
-        super(message, self).__init__()
+    def __init__(self, message, *detail):
+        super().__init__()
         self.message = message
         self.detail = detail
 
     def handle(self, req):
-        return [skelfor(req).message(self.message, self.detail)]
+        return skelfor(req).message(req, self.message, *self.detail)
 
 class httperror(usererror):
-    def __init__(self, status, message = None, detail = None):
+    def __init__(self, status, message=None, detail=None):
         if message is None:
             message = proto.statusinfo[status][0]
         if detail is None:
-            detail = proto.statusinfo[status][1]
-        super(httperror, self).__init__(message, detail)
+            detail = (proto.statusinfo[status][1],)
+        super().__init__(message, *detail)
         self.status = status
 
     def handle(self, req):
         req.status(self.status, self.message)
-        super(httperror, self).handle(req)
+        return super().handle(req)
 
 class notfound(httperror):
     def __init__(self):
-        super(notfound, self).__init__(404)
+        return super().__init__(404)
+
+class redirect(dispatch.restart):
+    bases = {"url": proto.requrl,
+             "script": proto.scripturl,
+             "site": proto.siteurl}
+
+    def __init__(self, url, status=303, base="url"):
+        super().__init__()
+        self.url = url
+        self.status = status
+        self.bases[base]
+        self.base = base
+
+    def handle(self, req):
+        req.status(self.status, "Redirect")
+        req.ohead["Location"] = proto.appendurl(self.bases[self.base](req), self.url)
+        req.ohead["Content-Length"] = 0
+        return []
+
+class unmodified(dispatch.restart):
+    def handle(self, req):
+        req.status(304, "Not Modified")
+        req.ohead["Content-Length"] = "0"
+        return []
+
+class fileiter(object):
+    def __init__(self, fp):
+        self.fp = fp
+
+    def __iter__(self):
+        return self
+
+    def __next__(self):
+        if self.fp is None:
+            raise StopIteration()
+        data = self.fp.read(16384)
+        if data == b"":
+            self.fp.close()
+            self.fp = None
+            raise StopIteration()
+        return data
+
+    def close(self):
+        if self.fp is not None:
+            self.fp.close()
+            self.fp = None
+
+class fileresp(dispatch.restart):
+    def __init__(self, fp, ctype, charset=None, cachable=True):
+        self.fp = fp
+        self.ctype = ctype
+        if charset is None and ctype.startswith("text/"):
+            charset = sys.getdefaultencoding()
+        self.charset = charset
+        self.cachable = cachable
+
+    def handle(self, req):
+        sb = None
+        if hasattr(self.fp, "fileno"):
+            sb = os.fstat(self.fp.fileno())
+        if self.cachable and sb and sb.st_mtime != 0:
+            if "If-Modified-Since" in req.ihead:
+                rtime = proto.phttpdate(req.ihead["If-Modified-Since"])
+                if rtime is not None and rtime >= math.floor(sb.st_mtime):
+                    raise unmodified()
+            req.ohead["Last-Modified"] = proto.httpdate(sb.st_mtime)
+        ctype = self.ctype
+        if self.charset is not None:
+            ctype += "; charset=%s" % (self.charset)
+        req.ohead["Content-Type"] = ctype
+        if sb and sb.st_size > 0:
+            req.ohead["Content-Length"] = str(sb.st_size)
+        return fileiter(self.fp)