#include <iostream>
#include <fstream>
#include <string>

std::string s_FileName = "shader.vert";
std::string s_ExecDir;

std::string getExecDirString(int argc, char* argv[])
{
    std::string s_ExecPathFull = std::string(argv[0]);

#ifdef _WIN32
    std::size_t pos = s_ExecPathFull.rfind("\\");
#else
    std::size_t pos = s_ExecPathFull.rfind("/");
#endif

    if (pos != std::string::npos)
    {
        std::string s_ExecPath = s_ExecPathFull.substr(0, pos);
        return s_ExecPath;
    }
    else
    {
        return std::string("");
    }
}


class Shader
{
public:
    Shader(std::string strFileName)
    {
        static std::fstream fin(strFileName);

        if (!fin.is_open())
            return;

        std::string strLine = std::string("");
        std::string strText = std::string("");

        while (std::getline(fin, strLine)) {
            strText = strText + "\n" + strLine;
        }

        fin.close();

        std::cout << strText << std::endl;
    }

};

int main(int argc, char* argv[])
{
    s_ExecDir = getExecDirString(argc, argv);

    Shader shader(s_ExecDir + "\\" + s_FileName);

    return 0;
}