Question

I need to build an expression which matches generic #include "file.h" code line.

Is the following correct for that purpose?

([[:blank:]]*#include[[:blank:]]*")([[:print:]]*\.h)([[:print:]]*)

The expression should match for the followings:

#include     "header.h" //first include

     #include "header2.h"      //second include

#include "header3.h"

I use boost regex library.

Answer 1

Boost Regex can use Perl, Or POSIX regular expression syntax : http://www.boost.org/doc/libs/1_52_0/libs/regex/doc/html/boost_regex/syntax.html

So you can check and test your regex here: http://www.regextester.com/

Just set to preg (perl) if you are using the default behaviour of boost (See above).