Re: [Zope] HTML post processing in Zope

24 May 2005

      Dne čtvrtek, 5. května 2005 04:58 Cyrille Bonnet <cyrille@3months.com> napsal(a):
...
Hi all,
I am trying to perform a post-processing on all HTTP responses, before
they get sent to the browsers. I am using Zope 2.7.3 nad Plone 2.0.5.
I had a look at the ZServer class: it seems to be the right place, but I
don't understand all the code there and I am afraid to break something :-(
Am I on the right tracks there? Could someone with great Zope knowledge
be kind enough to point out which method I should change? (I want to
change the HTML content, not the headers).
I have unitws product (from somebody else) which does modifications 
on the resulted html code. It is able to do any 
modifications, I was modify them to do wml compliant 
national characters and more.

You call it simple with 

<dtml-unitws>
your content here
</dtml-unitws>

Place this file __init__.py into "unitws" folder of your Products:

# cat /var/zope/lib/python/Products/unitws/__init__.py
from string import split, strip, join, find
import DocumentTemplate.DT_Util
from DocumentTemplate.DT_String import String

class UnitWhitespaceTag:
    """
    Removes redundant whitespace (not very conservatively)
    """

    name='unitws'
    blockContinuations=()

    def __init__(self, blocks):
        tname, args, section = blocks[0]
        args = DocumentTemplate.DT_Util.parse_params(args)
        self.blocks = section.blocks

    def render(self,md):
        a = []
        for line in split(DocumentTemplate.DT_Util.render_blocks(self.blocks, md),'\n'):
            line = strip(line)
            if line:
                b = []
                for word in split(line,' '):
                    if word!='':
                        b.append(strip(word))
                a.append(join(b,' '))
        return join(a,'\n')

    __call__=render

String.commands['unitws']=UnitWhitespaceTag

-- 

                        Jaroslav Lukesh
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