Implementation for: http://issues.roundup-tracker.org/issue2550731 Add mechanism for the detectors to be able to tell the source of the data changes. Support for tx_Source property on database handle. Can be used by detectors to find out the source of a change in an auditor to block changes arriving by unauthenticated mechanisms (e.g. plain email where headers can be faked). The property db.tx_Source has the following values: * None - Default value set to None. May be valid if it's a script that is created by the user. Otherwise it's an error and indicates that some code path is not properly setting the tx_Source property. * "cli" - this string value is set when using roundup-admin and supplied scripts. * "web" - this string value is set when using any web based technique: html interface, xmlrpc .... * "email" - this string value is set when using an unauthenticated email based technique. * "email-sig-openpgp" - this string value is set when email with a valid pgp signature is used. (*NOTE* the testing for this mode is incomplete. If you have a pgp infrastructure you should test and verify that this is properly set.) This also includes some (possibly incomplete) tests cases for the modes above and an example of using ts_Source in the customization.txt document.

"""Templating engine adapter for the Chameleon."""

__docformat__ = 'restructuredtext'

import os.path
import chameleon

from roundup.cgi.templating import StringIO, context, TALLoaderBase

class Loader(TALLoaderBase):
    def __init__(self, dir):
        self.dir = dir
        self.loader = chameleon.PageTemplateLoader(dir)

    def load(self, tplname):
        src, filename = self._find(tplname)
        return RoundupPageTemplate(self.loader.load(src))

class RoundupPageTemplate(object):
    def __init__(self, pt):
        self._pt = pt

    def render(self, client, classname, request, **options):
        c = context(client, self, classname, request)
        c.update({'options': options})

        def translate(msgid, domain=None, mapping=None, default=None):
            result = client.translator.translate(domain, msgid,
                         mapping=mapping, default=default)
            return unicode(result, client.translator.OUTPUT_ENCODING)

        output = self._pt.render(None, translate, **c)
        return output.encode(client.charset)

    def __getitem__(self, name):
        return self._pt[name]

    def __getattr__(self, name):
        return getattr(self._pt, name)