Re: [Boost-users] error in regex_replace!?

From: John Maddock (john_at_[hidden])
Date: 2006-07-28 05:02:52

llwaeva_at_[hidden] wrote:
> Hi there,
>  I am using regex_replace to find_replace a pattern. The code is
> shown below
>
>  string src = "xxx%R__xy\r\n%\r\nRyyyy%
>  A__%%A\r\n%Rzzz%C%Appp_%C0123\r\n%Rooo"; re = "(%R)|(%A)|(%C)";
>  format = "(?1#R)(?2#A)(?3#C)";
>  cout << "SOURCE:" << endl << src << endl << endl;
>  regex_replace( src.begin(), src.begin(), src.end(), re, format,
>  format_all ); cout << "OUTPUT:" << endl << src << endl << endl;

OK I've just realise what you're doing, and in short DON'T DO THAT!!!! 
regex_replace does not do inplace search and replace, YOU ABSOLUTELY CANNOT 
OVERWRITE A STRING YOU'RE STILL READING FROM!

Use:

src = regex_replace(src, re, format, format_all);

instead.

John.