Basename

Hi!

What is the easy way to create a function in C++ which will return the basename from a string i.e.

from "C:/tutu/tata/test" I want to get "test"

Thanks!

You could try string::rfind, searches a string starting from the back. Check out this totally awesome code

Code:

---

#include <string>
#include <iostream>
int main(int argc, char *argv[])
{
        //You'll note how cool it is the lines line up
        std::string stuff("C:/woot/rawr/whatev/test");
        std::string::size_type pos = stuff.rfind("/");


        if(pos != std::string::npos)
                std::cout << stuff.substr(pos + 1, stuff.length() - pos + 1) << "\n";
        else std::cout << "Invalid path\n";
        return 0;
}

---

Thanks I tried that but I get the same in input and ouput doing

Code:

---


int pos = name.rfind("/");
std::string basename = name.substr(pos + 1, name.length() - pos + 1);

---

Maybe it's the "/"?

Actually it is more complicated because I have

"C:\SMG\Projects\BoreholeTut\GRDFILE.grd\D1SF.grid " and I want to obtain "D1SF"

Code:

---

#include <string>
#include <iostream>
int main(int argc, char *argv[])
{
        // You'll note the failure to make aesthetically awesome code here <sad>
        std::string stuff("C:\\SMG\\Projects\\BoreholeTut\\GRDFILE.grd\\D1SF.grid");
        std::string::size_type pos[2];
                pos[0] = stuff.rfind("\\");
                pos[1] = stuff.rfind(".");


        if(pos[0] != std::string::npos && pos[1] != std::string::npos)
                std::cout << stuff.substr(pos[0] + 1, stuff.length() - pos[1] - 1) << "\n";
        else std::cout << "Invalid path\n";
        return 0;
}

---

if I put a single slash "\" in the rfind search as it should be (you put two slashes in your example) I get a compile error "newline constant" why?

Something about, maybe, escape sequences: http://www.cppreference.com/escape_sequences.html