My vote is to use the standard one or the boost.regex On Thu, Jun 11, 2015 at 10:07 AM, Egor Pugin <egor.pu...@gmail.com> wrote:
> By the way C++11 has native regex support. > > On 10 June 2015 at 21:03, Adriano dos Santos Fernandes > <adrian...@gmail.com> wrote: > > Hi! > > > > When I created SIMILAR TO predicate, I research for libraries to do the > > real work and found no good alternative. > > > > PgSQL were using (AFAIR) Henry Spencer library, but its (PgSQL) SIMILAR > > TO were definitively non SQL standard. > > > > We needed a library to work with 1, 2 or 4 byte-length characters, > > actually their canonical representations of collations. > > > > So as no suitable library was found, I wrote myself one based on a > > CodeProject library. > > > > This library was simple and recursive, hence it had problems with BLOBs. > > Then I managed to recreate it with non-recursive code. > > > > This library is trick. First of all, I'm not experienced in regex > > matching. Bugs on it are difficult to fix, and there are cases which > > it's really slow (I didn't compared with others libraries, which may > > also be slow with bomb expressions). > > > > I'd want to replace it with something capable of working as we need, > > when customized (not editing their code). > > > > At a first look, boost.regex is the library who can do it. It's > > templatized and works with iterators and traits for customization. It > > has integration with ICU and MFC strings, so this is useful to > > understand how to customize it. > > > > Understand and customize it will require time, however. > > > > And I do not want to lost time if it's going to be objected because: > > - It's external code > > - It's boost > > - It's a library which uses C++ as C++, i.e., uses the std library > > - Not only it's internal (like ICU) uses C++, but its interface too > > > > So what do you think on include such type of library in Firebird? > > > > > > Adriano > > > > > > > ------------------------------------------------------------------------------ > > Firebird-Devel mailing list, web interface at > https://lists.sourceforge.net/lists/listinfo/firebird-devel > > > > -- > Egor Pugin > > > ------------------------------------------------------------------------------ > Firebird-Devel mailing list, web interface at > https://lists.sourceforge.net/lists/listinfo/firebird-devel >
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