[XML-SIG] [Announce] Gnosis Utils 1.1.0 (update)

David Mertz, Ph.D. mertz at gnosis.cx
Wed Jul 16 18:20:49 EDT 2003

** I bit the bullet an bought more bandwidth, this notice is
** updated to reflect the permanent URL for Gnosis Utilities

[Announce] Gnosis Utils 1.1.0

This release contains enhancements to gnosis.xml.objectify.

    Added _XO_.__repr__ method to make nodes print in a nicer,
    more compact fashion.

    Added ._seq attribute to node objects to support structure
    preserving convenience functions.  Specifically, older
    versions of gnosis.xml.objectify lost information about mixed
    content and the order of children.  E.g.,

      >>> xml = '<foo>Mixed <i>content</i> is <b>good</b></foo>'
      >>> obj = XO(xml,EXPAT).make_instance()
      >>> obj.PCDATA, obj.i.PCDATA, obj.b.PCDATA
      (u'Mixed is', u'content', u'good')

    We had no way of knowing where inside <foo> the <i> and the
    <b> occur, nor even which child element occurs first.

    Now we can recover that information:

      >>> from gnosis.xml.objectify import content, children
      >>> content(obj)
      [u'Mixed ', <i id="30264c">, u' is ', <b id="30292c">]
      >>> children(obj)
      [<i id="30264c">, <b id="30292c">]

    Sequence information and convenience methods are NOT
    SUPPORTED (yet?) for the DOM parser, only for EXPAT!

    Changed default parser to EXPAT.  If you have relied on the
    special attribute ._XML that the DOM parser attaches to
    nodes, you will now need to explicitly specify DOM as the
    parser used.  However, the new sequence functions pretty well
    handle the job pyobj._XML used to do (in a different way).

    Some newer versions of PyXML report CDATA as #cdata-section
    nodes rather than as #text.  We deal with it either way now.

It may be obtained at:


(this URL is different from usual since my main site was slashdotted,
and I'm worried about my monthly bandwidth limit; I'll copy the file
to its regular home next month).

Try it out, have fun, send feedback!

David Mertz (mertz at gnosis.cx)
Frank McIngvale (frankm at hiwaay.net)


BACKGROUND:  Gnosis Utilities contains a number of Python libraries, most
(but not all) related to working with XML.  These include:

    gnosis.indexer          (Full-text indexing/searching)
    gnosis.xml.pickle       (XML pickling of Python objects)
    gnosis.xml.objectify    (Any XML to "native" Python objects)
    gnosis.xml.validity     (Enforce validity constraints)
    gnosis.xml.indexer      (XPATH indexing of XML documents)
    [...].convert.txt2html  (Convert ASCII source files to HTML)
    gnosis.util.dtd2sql     (DTD -> SQL 'CREATE TABLE' statements)
    gnosis.util.sql2dtd     (SQL query -> DTD for query results)
    gnosis.util.xml2sql     (XML -> SQL 'INSERT INTO' statements)
    gnosis.util.combinators (Combinatorial higher-order functions)
    gnosis.util.introspect  (Introspect Python objects)
    gnosis.magic            (Multimethods, metaclasses, etc)

...and so much more! :-)

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