Daniel A Graham
daniel.graham at duke.edu
Wed Oct 26 18:08:28 EDT 2005
Greetings, I'm a big fan of mpservlets and have recently been involved in an effort to incorporate mathml support into HyperText via itex2mml. To do this I added the following to _HTML.py variant of HyperText used in the mpservlets tutorial:  # expand_codes taken from mpservlets _TutorialBase.py with one modification def expand_codes(s): '''Expand codes in string to HTML elements. For any text of the form X{text}, replace it with <ELEMENT>text</ELEMENT>, where X and related elements are:: C <CODE>...</CODE> E <EM>...</EM> S <STRONG>...</STRONG> or A{TEXT<URL>} will generate: <A HREF="URL">TEXT</A> Inspired by epytext. This simple version, however, does not allow embedding codes within each other. :( ''' import re # so we can pass in nonstring objects s = str(s) # iterate over our codes for code, elem in (('C', 'code'), ('E', 'em'), ('S', 'strong')): s = re.sub(r'%s{(.*?)}' % code, r'<%s>\1</%s>' % (elem, elem), s) s = re.sub(r'A{(.*?)<(.*?)>}', r'<a href="\2">\1</a>', s) # new support for inline math mre = re.compile(r'M{(.*)}') s = mre.sub(inline_math, s) return s # called above to replace the itex math string with mathml def inline_math(reo): from os import popen2 s = reo.group(1) cmd = 'itex2mml inline' (si, so) = popen2(cmd) si.write(s) si.close() s = so.read() so.close() return s # used for display mathml def M(s): from os import popen2 cmd = 'itex2mml display' (si, so) = popen2(cmd) si.write(s) si.close() s = so.read() so.close() return s  Now both expand_codes(P('''Here is some inline math M{(xy)^2}''') and M('''F(b)F(a) \equiv \int_a^b f(x) dx''') work as expected. Too cool! One unexpected side effect (to me at least) is that the doctype needed for mathml: DOCTYPE html PUBLIC "//W3C//DTD XHTML 1.1 plus MathML 2.0 causes all the upper case tags generated by HyperText to be ignored. This too, was easily fixed by adding '.lower()' to the occurances of 'self.name'. This means that P('...') will now generate '<p>...</p>'. Best wishes, Dan Graham daniel.graham at duke.edu
