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from mako import exceptions

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from mako.lookup import TemplateLookup

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import settings, resources, helpers

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import log

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"""

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    Locating and rendering templates

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"""

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_lookup = TemplateLookup(

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    directories=[resources.TEMPLATE_DIR], 

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#    module_directory='%s/cache' % settings.TEMPLATE_DIR, 

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    output_encoding='utf-8',

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    filesystem_checks=False,        # this may need to be changed if used in a long-term process

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)

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TEMPLATE_GLOBALS = dict(

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    h                          = helpers,

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    version                    = settings.VERSION,

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)

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class Template (object) :

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    def __init__ (self, name) :

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        self.name = name

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        self.tpl = _lookup.get_template("%s.%s" % (name, settings.TEMPLATE_EXT))

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    def render (self, **data) :

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        data.update(TEMPLATE_GLOBALS)

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        try :

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            log.debug("render %s with %s", self.name, data)

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            return self.tpl.render(**data)

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        except :

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            data = exceptions.text_error_template().render()

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            log.error(data)

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            raise

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    def render_to (self, file, **data) :

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        fh = open(file, "w")

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        fh.write(self.render(**data))

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        fh.close()

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# templates

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gallery = Template("gallery")

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image = Template("image")

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