[Zope] STX and images

[Danny William Adair]

Hi!

I want to be able to insert images in an stx document using the

"alttext":img:/path/to/image

input style of StructuredText.DocumentWithImages and then when needed render them to HTML using StructuredText.HTMLWithImages. For this purpose I tried to adopt code of the CMF that Tres Seaver posted to zope@zope.org (almost three months ago), to make it work as an external method that converts stx input (with the a/m image insertions) to html. I have the following code in my "Extensions" folder and the function stx_to_html (now available as an External Method) works _almost_ like a charm:

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import StructuredText, re
from StructuredText.HTMLWithImages import HTMLWithImages

_STXDWI = StructuredText.DocumentWithImages.__class__

class DWIClass( StructuredText.DocumentWithImages.__class__ ):
  _URL_AND_PUNC = r'([a-zA-Z0-9_\@\.\,\?\!\/\:\;\-\#\~]+)'

  def doc_href( self, s, expr1 = re.compile( _STXDWI._DQUOTEDTEXT + "(:)" + _URL_AND_PUNC + _STXDWI._SPACES).search, expr2 = re.compile( _STXDWI._DQUOTEDTEXT + r'(\,\s+)' + _URL_AND_PUNC + _STXDWI._SPACES).search):
    return _STXDWI.doc_href( self, s, expr1, expr2 )

DWIClass = DWIClass()

class HWIClass( HTMLWithImages ):
  def document(self, doc, level, output):
    for c in doc.getChildNodes():
      getattr(self, self.element_types[c.getNodeName()])(c, level, output)

HWIClass = HWIClass()

def stx_to_html( text, level=1 ):
  st = StructuredText.Basic( text )
  if not st:
    return ""

  doc = DWIClass( st )
  html = HWIClass( doc, level )
  return html
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Problem is, as soon as I have an underscore in the image path, the rendering will stop at that point, and continue spitting out the rest of the URL as raw text. What am I doing wrong? Is it DocumentWithImages or HTMLWithImages themselves, or is it the above subclass (with _URL_AND_PUNC) that lead to this incorrect rendering?
(btw, Zope Version is 2.4.1b1)

Thank you very much in advance,
Danny