Re: [icu-support] question on performance of character searching in UnicodeString

[Steven R. L. <sr...@ic...>]

Are you doing the original conversion in ICU?  If so, you can use the  
ICU converter callback interface to do the warning as conversion is  
done.

See the icu/source/samples/ucnv/convsamp.cpp  and function      
convsample_21_didSubstitute() , implementation is in flagcb.c
(Let me know ifyou have questions about using this.)

Otherwise, I think indexOf would be faster than a regular expression.

-s

On 27 Mej 2005, at 10:01, Wang, June wrote:
> We are trying to log a warning message whenever a Unicode  
> substitution character 0xFFFD or windows-1252 substitution  
> character 0x1A is found in data. Because we would like to check all  
> textual data in/out of DB, we have concern with the performance of  
> UnicodeString.indexOf()? Will using regular expression help the  
> performance?