Add a raw modifier to requests and responses, which turn off automatic additions.

For now, this just turns off adding a Content-Length header when a body is specified.

libpathod/rparse.py

@@ -8,6 +8,7 @@ TRUNCATE = 1024
 
 class FileAccessDenied(Exception): pass
 
+
 class ParseException(Exception):
     def __init__(self, msg, s, col):
         Exception.__init__(self)
@@ -22,7 +23,6 @@ class ParseException(Exception):
         return "%s at offset %s of %s"%(self.msg, self.col, repr(self.s))
 
 
-
 def actions_log(lst):
     ret = []
     for i in lst:
@@ -344,6 +344,16 @@ class Body:
         return e.setParseAction(lambda x: klass(*x))
 
 
+class Raw:
+    def accept(self, settings, r):
+        r.raw = True
+
+    @classmethod
+    def expr(klass):
+        e = pp.Literal("r").suppress()
+        return e.setParseAction(lambda x: klass(*x))
+
+
 class Path:
     def __init__(self, value):
         if isinstance(value, basestring):
@@ -496,6 +506,12 @@ class Code:
 
 class Message:
     version = "HTTP/1.1"
+    def __init__(self):
+        self.body = LiteralGenerator("")
+        self.headers = []
+        self.actions = []
+        self.raw = False
+
     def length(self):
         """
             Calculate the length of the base message without any applied actions.
@@ -528,12 +544,12 @@ class Message:
             fp: The file pointer to write to.
 
             check: A function called with the effective actions (after random
-            values have been calculated).  If it returns False service
+            values have been calculated). If it returns False service proceeds,
-            proceeds, otherwise the return is treated as an error message to be
+            otherwise the return is treated as an error message to be sent to
-            sent to the client, and service stops.
+            the client, and service stops.
         """
         started = time.time()
-        if self.body and not utils.get_header("Content-Length", self.headers):
+        if self.body and not self.raw and not utils.get_header("Content-Length", self.headers):
             self.headers.append(
                 (
                     LiteralGenerator("Content-Length"),
@@ -596,14 +612,13 @@ class Response(Message):
         InjectAt,
         ShortcutContentType,
         ShortcutLocation,
+        Raw
     )
     logattrs = ["code", "version"]
     def __init__(self):
-        self.headers = []
+        Message.__init__(self)
-        self.actions = []
         self.code = 200
         self.msg = LiteralGenerator(http_status.RESPONSES[self.code])
-        self.body = LiteralGenerator("")
 
     def preamble(self):
         return [self.version, " ", str(self.code), " ", self.msg]
@@ -635,14 +650,13 @@ class Request(Message):
         DisconnectAt,
         InjectAt,
         ShortcutContentType,
+        Raw
     )
     logattrs = ["method", "path"]
     def __init__(self):
+        Message.__init__(self)
         self.method = None
         self.path = None
-        self.body = LiteralGenerator("")
-        self.headers = []
-        self.actions = []
 
     def preamble(self):
         return [self.method, " ", self.path, " ", self.version]

test/test_rparse.py

@@ -116,6 +116,10 @@ class TestMisc:
         assert e.parseString("'foo'")[0].value.val == "foo"
         assert e.parseString("'get'")[0].value.val == "get"
 
+    def test_raw(self):
+        e = rparse.Raw.expr()
+        assert e.parseString("r")[0]
+
     def test_body(self):
         e = rparse.Body.expr()
         v = e.parseString("b'foo'")[0]
@@ -436,6 +440,17 @@ class TestResponse:
         r = rparse.parse_response({}, "400'msg'")
         assert r.serve(s)
 
+    def test_raw(self):
+        s = cStringIO.StringIO()
+        r = rparse.parse_response({}, "400:b'foo'")
+        r.serve(s)
+        assert "Content-Length" in s.getvalue()
+
+        s = cStringIO.StringIO()
+        r = rparse.parse_response({}, "400:b'foo':r")
+        r.serve(s)
+        assert not "Content-Length" in s.getvalue()
+
     def test_length(self):
         def testlen(x):
             s = cStringIO.StringIO()