[Libreoffice] [PATCH] String::CompareIngoreCaseToAscii

[Jan Holesovsky]

Hi August,

On 2011-10-02 at 20:00 -0400, August Sodora wrote:

> Apparently the issue was that I actually wasn't using the parameter :)
> I've attached a preliminary patch (my first!) for review.

Great stuff, thank you for that! :-)  Unfortunately the original code is
a kind of horror, and there is one tricky thing in there:

@@ -266,10 +266,8 @@ sal_Bool SbiScanner::NextSym()
         // replace closing '_' by space when end of line is following
         // (wrong line continuation otherwise)
         if( !bUsedForHilite && !*pLine && *(pLine-1) == '_' )
-        {
-            aSym.GetBufferAccess();     // #109693 force copy if necessary
             *((sal_Unicode*)(pLine-1)) = ' ';       // cast because of const
-        }
+
         // type recognition?
         // don't test the exclamation mark 
         // if there's a symbol behind it

The (C-style) cast touches the [potentially shared!] pLine (ie. aLine);
in which case, when it is shared with aSym, it can break badly when you
remove the GetBufferAccess.  If we want to get rid of that, I am afraid
more refactoring is needed :-(

BTW, another horror in the original code is:

> ch1 = aSym.ToUpperAscii().GetBuffer()[0];

ie. we convert the entire string to upper case, and then throw all that
away but the first char.

Can you have a look at these, and maybe first address the ToUpperAscii
part, and then have one more look at how to get rid of the
GetBufferAccess?

Either way - thank you a lot for looking into this!

All the best,
Kendy