Re: [Zope-dev] updating homebrew extension of structured text to standard

16 Jul 2002


      Hi all,
...
Jochen Knuth  <jok-zope@ipro.de> wrote:
...
Hi,
i have a ZClass with a property which is renderd as structured text. 
Because i designed this ZClass before there was a standard for 
including images, i made my own extension of structured text formating.
Short: I used __imageobject__ as markup for the image.
Now i want to update all my zclass instances to the new syntax (while 
upgrading to Zope 2.5.1).
I have a Python Script listKBE, which call an External Method 
updateKBE. If i use it with a path with only a few ZClass instances 
(about 10) it works (slowly). If i use it with a path with about 550 
instances it crashes or is extreme slow.
Anyone to suggest a faster method?
Thank you,
Jochen
again replying to myself:
...
i now do a ZopeFind (or correct: two nested ZopeFinds) in the External 
Method (attached) and give the result to the converter function. It 
works now reasonably fast, even with all my ZClass instances (about 600).
no, it doesn't work :-(
...
------------------------------------------------------------------------
#!/usr/local/bin/python
import string
import re
def punc_func(exclude):
    punc = r''
    for char in string.punctuation:
        if char not in exclude:
            punc = punc + r'\%s' % char
    return punc
digits      = string.digits
letters     = string.letters
literal_punc = punc_func("'")
dbl_quoted_punc = punc_func("\"")
strongem_punc = punc_func('*')
under_punc = punc_func('_<>')
phrase_delimiters = r'\s\.\,\?\/\!\&\(\)'
def kbeimage_search_replace(text):
expr = re.compile(r'__([%s%s%s\s]+?)__' % (letters, digits, strongem_punc)).search
    r=expr(text)
    if r:
        start, end = r.span(1)
        newtext='"bild":img:'
        newtext=text[:start-2]+newtext+text[start:end]+' '+text[end+2:]
        return kbeimage_search_replace(newtext)
    else:
        return text
def updateKBE(self,path):
    pathobj=self.restrictedTraverse(path)
    resultbases=self.ZopeFind(pathobj, obj_metatypes=['IPRO Knowledge Base'],search_sub=1)
    resultlist=[]
    for fid,fobj in resultbases:
        results=self.ZopeFind(pathobj, obj_metatypes=['IPRO Knowledge Base Entry'])
this should be

          results=self.ZopeFind(fobj, obj_metatypes=['IPRO Knowledge 
Base Entry'])

not searching recursively else.
...
for id,obj in results:
            resultlist.append(id)
            issue = obj.Issue
            newissue = kbeimage_search_replace(issue)
and here the Zope process dies on signal 11, if i only print e.g. id, 
obj.Issue it works, but when i call the 
kbeimage_search_replace()-function ->kaboom.
...
obj.propertysheets.properties.manage_changeProperties({'Issue':newissue})
    return resultlist
if i test the kbeimage_search_replace()-function manually, i can replace 
the __image.gif__ several times, but i think that the recursive call is 
causing the error.
Any re expert here, who can change the recursive function into an one 
pass function (there might be several image refs per issue)?

Thank you,
Jochen
-- 
--------------------------------------------------
Jochen Knuth          WebMaster http://www.ipro.de
IPRO GmbH             Phone ++49-7152-93330
Steinbeisstr. 6       Fax ++49-7152-933340
71229 Leonberg        EMail: J.Knuth@ipro.de