{

boost::scoped_ptr<RE2> pat;

re2_regex() {}

~re2_regex(){}

virtual bool set_expression(const char* pp, bool isperl)

{

if(!isperl)

return false;

std::string s("(?m)");

s += pp;

pat.reset(new RE2(s));

return pat->ok();

}

virtual bool match_test(const char* text);

virtual unsigned find_all(const char* text);

virtual std::string name();

struct initializer

{

initializer()

{

re2_regex::register_instance(boost::shared_ptr<abstract_regex>(new re2_regex));

}

void do_nothing()const {}

};

static const initializer init;

{

unsigned count = 0;

StringPiece input(text);

while(RE2::FindAndConsume(&input, *pat))

{

++count;

}

return count;

{

init.do_nothing();

return "RE2";