I am trying to port an xml parser to using lxml.etree.
I can get the parser to work find and get it to validate properly and produce a
parse tree
in tuple form ie (tag, attrib, [contents...], extra)
The standard xml error locations are find and provide both line number and
column.
However, the current parser allows for debugging during post processing of the parse and it has a tuple of information
in place of extra above that looks like ((srcname,startline,startcolumn),(srcname,endline,endcolumn)). This extra
information allows post analysis to determine if one tag starts after another.
I can find no way to access the column information in the standard parsers.
I believe that the information is present in the XMLReader that libxml2
provides, but no way to get access in lxml.
I think I just need to determine a tag ordering ie does tag0 start before or
after tag1 in the source.
Is there an obvious way to do that?
Currently (tag0.startline, tag0.startcolumn) is compared with (tag1.startline, tag1.startcolumn) and the latest tag is
returned.
I believe I could just add a tag sequence to determine order, but is there an
easier way?
--
Robin Becker
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