Re: [Boost-users] regex_replace

Subject: Re: [Boost-users] regex_replace
From: Christer Borgqvist (christer.borgqvist10_at_[hidden])
Date: 2012-02-06 12:31:06

Thanks for Your reply
im closer but ther's a diffrent
if i do as You say like this
std::string stmp = "PORT (127,0,0,1,6,56)\r";
boost::regex 
regex_ip(".+\\(?([0-9]{1,}),([0-9]{1,}),([0-9]{1,}),([0-9]{1,}),([0-9]{1,}),([0-9]{1,})\\)?.*");
std::string sip = boost::regex_replace(stmp, regex_ip, "$1.$2.$3.$4", 
boost::format_all);
the output is
7.0.0.1
but if i have the
std::string stmp = "PORT (127,0,0,1,6,56)\r";
boost::regex 
regex_ip(".+\\(([0-9]{1,}),([0-9]{1,}),([0-9]{1,}),([0-9]{1,}),([0-9]{1,}),([0-9]{1,})\\).*");
std::string sip = boost::regex_replace(stmp, regex_ip, "$1.$2.$3.$4", 
boost::format_all);
the output is
127.0.0.1

there is something i miss

/Christer
"John Maddock" <boost.regex_at_[hidden]> skrev i meddelandet 
news:2787367C597B46F4A64E9AB393CAEC01_at_acerlaptop...
> No application crash,
> the only changes is in
> std::string stmp = "PORT (127,0,0,1,6,56)\r"; this works with
> boost::regex 
> regex_ip(".+\\(([0-9]{1,}),([0-9]{1,}),([0-9]{1,}),([0-9]{1,}),([0-9]{1,}),([0-9]{1,})\\).*");
> std::string sip = boost::regex_replace(stmp, regex_ip, "$1.$2.$3.$4",
> out 127.0.0.1
> to
> std::string stmp = "PORT 127,0,0,1,6,56\r"; this not.
> out PORT (127,0,0,1,6,56)
> if i change to
> boost::regex 
> regex_ip(".+\([0-9]{1,}),([0-9]{1,}),([0-9]{1,}),([0-9]{1,}),([0-9]{1,}),([0-9]{1,})\.*");
> the out is
> 7.0.0.1
>
> I must change something in the regex_ip but i cant figure it out.
>
> ~~~~~~~~~~~~~~
>
> You're regular expression has literal ( and ) in it - the \\( and \\) 
> parts, so.... not surprisingly these will only match if the text has 
> literal ( and )'s.  So either remove those from the expression or make 
> them optional by using \\(? and \\)?.
>
> HTH, John.