[mapguide-internals] Parsing/Processing DWF Section content

[Jackie Ng]

Hi All,

I've almost finished porting the PHP web tier test runner over to .net,
allowing the SQLite-driven test suite to be executable from .net, exercising
against the .net wrappers to the MapGuide API, giving us greater test
coverage of the MapGuide wrapper APIs as a result.

Currently the .net test runner has 3 test failures and they all stem from
what I'm certain is an incorrect .net implementation of the
RemoveDwfSectionName function from ValidateUtils.php (ref:
http://trac.osgeo.org/mapguide/browser/trunk/MgDev/UnitTest/WebTier/Php/ValidateUtils.php#L114)

Just looking at the function itself seems really simple. Return the bits
between ".w2d" and "EndOfDWF" if both tokens exists and compare that snippet
against the expected result from the SQLite test database, or the original
content of neither token is found.

But the problem in .net is that we're working with byte arrays (because
that's what Read() in MgByteReader is expecting in .net), and there's
obviously some voodoo black magic in PHP that allows strings and byte arrays
to be interchangeable. Well that doesn't really fly in .net as strings and
byte arrays are two distinctly different things and we need to know the
correct encoding in order to be able to transfer from one to the other or
vice versa.

Here's what I currently have for .net
(http://trac.osgeo.org/mapguide/browser/trunk/MgDev/UnitTest/WebTier/DotNet/TestCommon/CommonUtility.cs#L441).
Not sure what I'm doing wrong here. Should we be trying to process this as a
string or a raw byte array? Either way, the System.Text.Encoding will have
to be involved (either to convert the whole byte array to a string, or to
convert the tokens we're looking for into byte arrays for raw direct
comparison), and I have no real clue what encoding I should be using. I'm
currently just assuming System.Text.Encoding.UTF8. Not sure if this is right
or not.

Any ideas?

- Jackie



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