kNCurses/NCursesPtyApp.cpp

/**
 * @author Christian Burger (christian@krikkel.de)
 */

#include "NCursesPtyApp.hpp"
#include "NCursesPtyWindow.hpp"
#include "Debug.hpp"

#include <unistd.h>
#include <utmp.h>
#include <cstdlib>

namespace krikkel::NCursesPtyWindow
{
    NCursesPtyApp::NCursesPtyApp() : NCursesApplication(false)
    {

    }

    int NCursesPtyApp::run()
    {
        NCursesPtyWindow *ptyWindow = new NCursesPtyWindow(
                Root_Window->lines()
              , Root_Window->cols()
              , 0
              , 0);

        if(fork() == 0)
        {
            const char *shellPath = getenv("SHELL");
            if(!shellPath)
                shellPath = "/bin/bash";

            login_tty(ptyWindow->getFdPtyClient());
            const int sizeArg = 2;
            const char *arg[sizeArg] = {shellPath, NULL};
            fprintf(stderr, "<CTRL>+C exits shell.\n\n");
            execv(shellPath, const_cast<char * const *>(arg));
            fprintf(stderr, "Well, well, well … could not start a shell. We "
                            "tried `%s`. Maybe set `SHELL` environment variable"
                            " to a working value?", shellPath);
            exit(1);
        }

        int input;
        while(true)
        {
            input = ptyWindow->getch();
            if(input == KEY_RESIZE)
            {
                ptyWindow->wresize(Root_Window->lines(), Root_Window->cols());
                continue;
            }
            ptyWindow->writeToClient((unsigned char) input);
        }

        return 0;
    }
}