Craig, I'm not sure what your use case is, but as an alternative, you might try using the "etree" export. So generate the bindings like:
generateDS.py -qf -o foo.py --external-encoding='utf-8' --export="write
etree" foo.xsd
Then use the attached mintest-2.py file to write out your file. As far as
I can tell, it successfully writes out the XML. You will need lxml, which
I believe most distributions should have.
Hope this helps,
Logan
On Thu, Aug 29, 2013 at 8:58 PM, W. Craig Trader <craig.tra...@gmail.com>wrote:
> I have an application that needs to write I18N data to XML, using UTF-8
> encoding, running on Python 2.7. See attached schema, and example
> program. I generated the foo.py wrapper as follows:
>
> generateDS.py -qf -o foo.py --external-encoding='utf-8' --export="write"
> foo.xsd
>
> When I run the test program, I get the following error:
>
> Traceback (most recent call last):
> File "mintest.py", line 15, in <module>
> a.export( out, 0 )
> File "/home/ctrader/src/gds-test/foo.py", line 648, in export
> self.exportChildren(outfile, level + 1, namespace_, name_,
> pretty_print=pretty_print)
> File "/home/ctrader/src/gds-test/foo.py", line 668, in exportChildren
> outfile.write('<%sfoo>%s</%sfoo>%s' % (namespace_,
> self.gds_format_string(quote_xml(self.foo).encode(ExternalEncoding),
> input_name='foo'), namespace_, eol_))
> File "/home/ctrader/foo/lib/python2.7/codecs.py", line 691, in write
> return self.writer.write(data)
> File "/home/ctrader/foo/lib/python2.7/codecs.py", line 351, in write
> data, consumed = self.encode(object, self.errors)
> UnicodeDecodeError: 'ascii' codec can't decode byte 0xd9 in position 5:
> ordinal not in range(128)
>
> After a long debugging session, I determined that the problem is that the
> code that generateDS generates for the export methods uses regular strings,
> not unicode strings, for its constants. When you concatenate 'aaa' + X +
> 'ccc', it works fine, as long as X is a regular string, or a unicode string
> containing only ASCII characters. When X isn't ASCII, you get the exception
> I noted above.
>
> For my short-term problem, I went through the entire generateDS.py program
> and converted every statement that emits code for the wrapper classes to
> emit unicode constants instead of string constants, and got rid of the
> calls to gds_format_string(), but that's not a good long-term fix.
>
> Can anyone suggest a better solution?
>
> Other problems observed:
>
> - gDS doesn't generate the <?xml ?> directive at the start of the
> export.
> - gDS does not deal well with complex namespaces in schemas.
>
> I worked around both of those by writing my data to a string, and then
> massaging the string before writing the result to a file. Again, it works
> in the short-term, but isn't a long-term solution.
>
> - Craig -
>
>
>
>
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mintest-2.py
Description: Binary data
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