[Boost-bugs] [Boost C++ Libraries] #13232: u32regex_replace - None of these prototypes have callback formatter capability

Subject: [Boost-bugs] [Boost C++ Libraries] #13232: u32regex_replace - None of these prototypes have callback formatter capability
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2017-09-28 21:08:29

#13232: u32regex_replace -  None of these prototypes have callback formatter
capability
------------------------------+--------------------------
 Reporter:  robic@…           |      Owner:  John Maddock
     Type:  Feature Requests  |     Status:  new
Milestone:  To Be Determined  |  Component:  regex
  Version:  Boost 1.65.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+--------------------------
 I've had to do a workaround using a u32regex_iterator.\\
 This one takes parameters  wstring, u32regex, and function address.\\
 (Internally it converts the wstring to u32string and does\\
 the replacement with the user callback).

 I just have to add more prototypes for the different forms\\
 needed, but it would be nice if I didn't have to do this.

 {{{
 void U_Regex_Replace_Callback(
         X_string& strSrc,
         U_X_regex& Rx,
         X_32string (*func)(X_u32smatch) )
 {
         X_32string str32Src, str32Repl, str32Out;
         WstrToU32string( strSrc, str32Src );
         str32Out.clear();

         boost::u32regex_iterator<std::u32string::const_iterator>
                 i(boost::make_u32regex_iterator( str32Src, Rx)), j;
         U32SITR last = str32Src.begin();
         while(i != j)
         {
                 str32Out.append( (*i).prefix() );
                 str32Out.append( func( (*i) ) ) ;
                 last = (*i)[0].second;
             ++i;
         }
         str32Out.append( last, str32Src.end() );
         U32stringToWstr( str32Out, strSrc );
 }

 }}}

-- 
Ticket URL: <https://svn.boost.org/trac10/boost/ticket/13232>
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