about to rip my hair out with boost...

[Dy7SLyTq]

so im writing a lexer, and i want to use boost::regex for it. im sure im using it right (just in case though)

    while(!this->Source.empty())
    {
        if(regex_search(Start, End, Match, regex("\"[^\"]*\""), Flags))
        {
            this->SymbolTable->PushBack("STRING", string(Match[0].first, Match[0].second), 0, -1);
            this->SymbolTable->Next();
            Start = Match[0].second;
            Flags |= match_prev_avail;
            Flags |= match_not_bob;
            continue;
        }

        else if(regex_search(Start, End, Match, regex("[_A-Za-z]+[_A-Za-z0-9]*"), Flags))
        {
            this->SymbolTable->PushBack("STRING", string(Match[0].first, Match[0].second), 0, -1);
            this->SymbolTable->Next();
            Start = Match[0].second;
            Flags |= match_prev_avail;
            Flags |= match_not_bob;
            continue;
        }

    }

someone told me to download the latest source and build that so i did, by unzipping it, cding to the source, running ./bootstrap.sh, ./b2, and finally ./b2 install. when i compile i get no errors but when i run it i get ./jade: error while loading shared libraries: libboost_regex.so.1.55.0: cannot open shared object file: No such file or directory

[Albatross]

Sorry, just a dumb question... what did you set the installation prefix to? Boost defaults to /usr/local, which I believe is write-protected. Also, are you sure that your system checks that installation prefix for shared libraries?

Also, another question. I take it you're using a Linux distro, right? If so, is there any particular reason you're not using a package? That could simplify a lot of your headaches.

-Albatross

[Dy7SLyTq]

i didnt specify, however i ran all with and without root (which i know isnt a good idea but i wanted it installed)

Also, are you sure that your system checks that installation prefix for shared libraries?

im sorry i dont know what that means

Also, another question. I take it you're using a Linux distro, right? If so, is there any particular reason you're not using a package?

because i think it was like version 1.45 on the repository which is apparently very old. someone recommended building from source to use the current version

[naraku9333]

Did you run ldconfig?

[Dy7SLyTq]

god damn it. i forgot to do that last time too

[Dy7SLyTq]

thanks that worked. now if you would be willing to help me one last time so i dont have to waste forum space with a new thread. so im using the function above and need to shorten the string everytime it finds a match to [end of match (ie Match[0].second) : end of string (ie string::size() -1) how would i do that?

[naraku9333]

I don't really know regex well, but my guess would be something like

std::string original;
//execute regex on original
...
std::string newstr(Match[0].second, original.end());

which may work if Match[0].second is an iterator pointing to original.