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Viewing changes to turbosimpletal/zptsupport.py

  • Committer: Michael Hudson
  • Date: 2008-06-16 09:17:12 UTC
  • mfrom: (128.6.77 loggerhead.trunk.cache)
  • mto: This revision was merged to the branch mainline in revision 160.
  • Revision ID: michael.hudson@canonical.com-20080616091712-j62u1l81kvdefmwe
merge beuno's remove_caches work

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turbosimpletal/zptsupport.py
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"TurboGears support for Zope Page Templates"
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import StringIO
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import logging
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import os
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import pkg_resources
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from zope.pagetemplate.pagetemplatefile import PageTemplateFile
 
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from simpletal import simpleTAL, simpleTALES
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log = logging.getLogger("turbogears.zptsupport")
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_zpt_cache = {}
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def zpt(tfile):
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    tinstance = _zpt_cache.get(tfile)
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    if tinstance is None:
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        tinstance = _zpt_cache[tfile] = TGPageTemplateFile(tfile)
 
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    stat = os.stat(tfile)
 
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    if tinstance is None or tinstance.stat != stat:
 
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        tinstance = _zpt_cache[tfile] = TemplateWrapper(
 
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            simpleTAL.compileXMLTemplate(open(tfile)), tfile, stat)
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    return tinstance
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class TGPageTemplateFile(PageTemplateFile):
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    def pt_getContext(self, args=(), options={}, **ignored):
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        namespace = super(TGPageTemplateFile, self).pt_getContext(
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            args, options, **ignored)
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        namespace.update(options)
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        return namespace
 
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class TemplateWrapper(object):
 
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    def __init__(self, template, filename, stat):
 
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        self.template = template
 
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        self.filename = filename
 
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        self.stat = stat
 
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    def expand(self, **info):
 
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        context = simpleTALES.Context(allowPythonPath=1)
 
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        for k, v in info.iteritems():
 
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            context.addGlobal(k, v)
 
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        s = StringIO.StringIO()
 
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        self.template.expandInline(context, s)
 
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        return s.getvalue()
 
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    @property
 
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    def macros(self):
 
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        return self.template.macros
 
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class TurboZpt(object):
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    extension = "pt"
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        if self.get_extra_vars:
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            data.update(self.get_extra_vars())
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        data.update(info)
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        return tinstance(**data).encode('utf-8')
 
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        return tinstance.expand(**data).encode('utf-8')