moved mailhost and extmeth

help/ExternalMethod.py

@@ -0,0 +1,143 @@
+##############################################################################
+# 
+# Zope Public License (ZPL) Version 1.0
+# -------------------------------------
+# 
+# Copyright (c) Digital Creations.  All rights reserved.
+# 
+# This license has been certified as Open Source(tm).
+# 
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+# 
+# 1. Redistributions in source code must retain the above copyright
+#    notice, this list of conditions, and the following disclaimer.
+# 
+# 2. Redistributions in binary form must reproduce the above copyright
+#    notice, this list of conditions, and the following disclaimer in
+#    the documentation and/or other materials provided with the
+#    distribution.
+# 
+# 3. Digital Creations requests that attribution be given to Zope
+#    in any manner possible. Zope includes a "Powered by Zope"
+#    button that is installed by default. While it is not a license
+#    violation to remove this button, it is requested that the
+#    attribution remain. A significant investment has been put
+#    into Zope, and this effort will continue if the Zope community
+#    continues to grow. This is one way to assure that growth.
+# 
+# 4. All advertising materials and documentation mentioning
+#    features derived from or use of this software must display
+#    the following acknowledgement:
+# 
+#      "This product includes software developed by Digital Creations
+#      for use in the Z Object Publishing Environment
+#      (http://www.zope.org/)."
+# 
+#    In the event that the product being advertised includes an
+#    intact Zope distribution (with copyright and license included)
+#    then this clause is waived.
+# 
+# 5. Names associated with Zope or Digital Creations must not be used to
+#    endorse or promote products derived from this software without
+#    prior written permission from Digital Creations.
+# 
+# 6. Modified redistributions of any form whatsoever must retain
+#    the following acknowledgment:
+# 
+#      "This product includes software developed by Digital Creations
+#      for use in the Z Object Publishing Environment
+#      (http://www.zope.org/)."
+# 
+#    Intact (re-)distributions of any official Zope release do not
+#    require an external acknowledgement.
+# 
+# 7. Modifications are encouraged but must be packaged separately as
+#    patches to official Zope releases.  Distributions that do not
+#    clearly separate the patches from the original work must be clearly
+#    labeled as unofficial distributions.  Modifications which do not
+#    carry the name Zope may be packaged in any form, as long as they
+#    conform to all of the clauses above.
+# 
+# 
+# Disclaimer
+# 
+#   THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY
+#   EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+#   IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+#   PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL DIGITAL CREATIONS OR ITS
+#   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+#   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
+#   USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+#   ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+#   OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+#   OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+#   SUCH DAMAGE.
+# 
+# 
+# This software consists of contributions made by Digital Creations and
+# many individuals on behalf of Digital Creations.  Specific
+# attributions are listed in the accompanying credits file.
+# 
+##############################################################################
+
+
+
+
+class ExternalMethod:
+    """
+
+    Web-callable functions that encapsulate external python functions.
+
+    The function is defined in an external file.  This file is treated
+    like a module, but is not a module.  It is not imported directly,
+    but is rather read and evaluated.  The file must reside in the
+    'Extensions' subdirectory of the Zope installation, or in an
+    'Extensions' subdirectory of a product directory.
+
+    Due to the way ExternalMethods are loaded, it is not *currently*
+    possible to use Python modules that reside in the 'Extensions'
+    directory.  It is possible to load modules found in the
+    'lib/python' directory of the Zope installation, or in
+    packages that are in the 'lib/python' directory.
+
+    """
+
+    def manage_edit(self, title, module, function, REQUEST=None):
+        """
+        Change the external method
+
+        See the description of manage_addExternalMethod for a
+        description of the arguments 'module' and 'function'.
+
+        Note that calling 'manage_edit' causes the "module" to be
+        effectively reloaded.  This is useful during debugging to see
+        the effects of changes, but can lead to problems of functions
+        rely on shared global data.
+
+        """
+
+    def __call__(self, *args, **kw):
+
+        """
+
+        Call an ExternalMethod
+
+        Calling an External Method is roughly equivalent to calling
+        the original actual function from Python.  Positional and
+        keyword parameters can be passed as usual.  Note however that
+        unlike the case of a normal Python method, the "self" argument
+        must be passed explicitly.  An exception to this rule is made
+        if:
+
+        - The supplied number of arguments is one less than the
+          required number of arguments, and
+
+        - The name of the function\'s first argument is 'self'.
+
+        In this case, the URL parent of the object is supplied as the
+        first argument.
+
+        """