I would propose an alternative approach. Do not put the {{{...}}} into
the stored wiki page. (Then you don't have to worry about reversing all
the effects that this has.) Instead write a plugin that only puts the
{{{...}}} into the wiki page when it is prepared for display.
I think this can be done with the IWikiPageManipulator.
http://trac.edgewall.org/wiki/TracDev/PluginDevelopment/ExtensionPoints/trac.wiki.api.IWikiPageManipulator
You would have to come up with a different trick to specify which wiki
pages should be handled in this way. For example you could use a special
naming scheme, like a special ".txt" ending.
That plugin could also add a special CSS class (e.g. class="dottxt") by
wrapping the page in {{{#!div class="dottxt" ... }}}.
http://trac.edgewall.org/wiki/WikiHtml#HowtoUseDivSpan
The entire thing could then look like this:
{{{
from trac.core import *
from trac.wiki.api import IWikiPageManipulator
class PlainTextWikiPagePreparer(Component):
implements(IWikiPageManipulator)
# A custom CSS class name that can be used for styling
CSS_CLASSNAME = 'dottxt'
def prepare_wiki_page(self, req, page, fields):
if self._is_special_page(page):
fields['text'] = self._escape_wikitext(page.text)
def validate_wiki_page(self, req, page):
return []
def _is_special_page(self, page):
"""Should the page be treated as special pre-formatted plain text?
For example, let's treat all wiki pages ending in .txt special.
"""
return page.name.endswith('.txt')
def _escape_wikitext(self, wikitext):
"""Return the escaped wikitext of a pre-formatted plain text.
For example, let's wrap the entire thing in {{{...}}}.
"""
return '{{{#!div class="' + self.CSS_CLASSNAME + '"\n{{{\n' +
wikitext + '\n}}}\n}}}'
}}}
You could put this - without the {{{ }}} - into a single file plugin in
your plugins folder. Or extend it to a full plugin including the custom CSS.
http://trac.edgewall.org/wiki/TracPlugins#/dropped
---
Peter
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