CAtlREMatchContext and special characters

[smalolepszy]

I have problem with special language characters, which have ascii code
above 128.

This is my source code:

CAtlRegExp<> re;
REParseError status =
re.Parse("{[&#261;&#260;&#263;&#262;&#281;&#280;&#322;&#321;&#324;&#323;&#347;&#346;&#380;&#379;&#378;&#377;óÓ]+}");
ATLASSERT(status == REPARSE_ERROR_OK);

CAtlREMatchContext<> mc;
const CAtlREMatchContext<>::RECHAR* szStart = "1234 &#261; 1234 &#263;
1234";
const CAtlREMatchContext<>::RECHAR* szEnd = 0;

while (re.Match( szStart, &mc, &szEnd ) )
{
mc.GetMatch( 0, &szStart, &szEnd);
ptrdiff_t nLength = szEnd - szStart;
CString a;
a.Format("%.*s", nLength, szStart );
}

When deguger goes to re.Match( 0, &szStart, &szEnd) I receive error:
Access violation. Why I can't use regular expressions to special
characters in national language?

Thanks

[Igor Tandetnik]

"smalolepszy" <smalo...@poczta.onet.pl> wrote in message
news:21669c6c.04122...@posting.google.com

> I have problem with special language characters, which have ascii code
> above 128.

Known problem. See

http://groups-beta.google.com/group/microsoft.public.vc.atl/browse_frm/thread/8eba20965be51c2b/58a0eb917936d4d8

No workaround that I know of.

I found CAtlRegExp to be rather buggy. Also, it uses an unusual regex
dialect. Consider using Greta [1] or Boost regex [2] instead. The latter
is very close to becoming part of C++ standard (or to be exact, C++
Library Technical Report). I've seen claims that Greta is noticeably
faster, but have not verified them myself either way.

[1] http://research.microsoft.com/projects/greta/
[2] http://boost.org/libs/regex/doc/index.html

--
With best wishes,
Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925

[Unknown]

Hi,

I was running in the same problem with german umlauts.

The algorithm seems to be buggy. To word around that, copy the file

C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\atlmfc\include\atlrx.h

to your project path and make the following changes and include it in your cpp:

Line 637

<!new unsigned char* usz = (unsigned char *) sz;
<!new size_t u = (size_t) *usz;
!>old size_t u = (size_t) *sz;

and Line 1181

<! new unsigned char uchStart = chStart;
<! new unsigned char uchEnd = chEnd;
<! new for (int i=uchStart; i<=uchEnd; i++)
!> old for (int i=chStart; i<=chEnd; i++)
pBits[i >> 3] |= 1 << (i & 0x7);

With these changes everthing should work fine.

Good luck!
Michael

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