boost::filesystem How having a correct path to file read it into stringstream?

So I have a path p and I can call for example is_regular_file(p) and file_size(p) on it but how to read that file into strin开发者_JS百科gstream? (btw I need only to read it)

I assume you want to copy the entire file into the stringstream.

std::stringstream ss;
ss << std::ifstream( p.string().c_str() ).rdbuf();

Here is a kind of inside-out demo:

Shadow:code dkrauss$ ./ssclone ssclone.cpp 
#include <sstream>
#include <fstream>
#include <iostream>

int main(int, char *argv[] ) {
std::stringstream ss;
ss << std::ifstream( argv[1] ).rdbuf();

std::cout << ss.str() << '\n';
}

boost::filesystem::path has string method.

const std::string & string() const;

http://www.boost.org/doc/libs/1_43_0/libs/filesystem/doc/reference.html#Class-template-basic_path

ss << p.string ().c_str ();