C++ program using NCurses!

laffd.cpp

#include <ncurses.h>
#include <cstdarg>
#include <stdio.h>


char * help = "Q = Quit, CTRL+E = Cycle through modes, CTRL+H = Show help\n";

const char MODE_EDITOR = 0, MODE_KEYPRESS = 1;
const char * modes[] = {"[0] Editor\n", "[1] Keypress Detecting\n"};
char mode = MODE_EDITOR;
const int MODE_COUNT = 2;

bool show_help = false;

const char * files[3] = {"main.cpp", "dude.cpp", "pleb.cpp"};
const char * file_content[3] =
  {
    "#include <iostream>\nint main()\n{\n\tstd::cout << \"wot?\\n\"\n}",
    "empty file\n",
    "another empty file?\nlol\n"
  };

char index = 0;

/* Refreshes the screen.  */
void show(char b);

/* Writes some text and then fills the line with spaces. */
void fill(int ln, char * str);

/* Finds the length of /string/. */
int len(char * string);

int main()
{

  initscr();
  start_color();
  init_pair(1, COLOR_RED, COLOR_BLACK);
  init_pair(2, COLOR_BLACK, COLOR_WHITE);
  show(' ');
  char x = getchar();
  while (true)
  {
    if (mode == MODE_EDITOR)
    {
      if (x == 65 && index > 0) index --;
      else if (x == 66 && index < 2) index ++;
    }
    if (x == 0x05) // CTRL+E
    {
      mode++;
      if (mode == MODE_COUNT) mode = 0;
    } 
    else if (x == 0x08)
    {
      show_help = !show_help;
    }
    else if (x == 0x04) // CTRL+D for commands
    {
      wmove(stdscr, 1, 1);
    }

    show(x);
    x = getchar();
  }
  endwin();
}

void show(char b)
{
  erase();

  attron(COLOR_PAIR(2));
    wmove(stdscr, 0, 0);
    int xx = 0, yy = 0;
    getyx(stdscr, yy, xx);
    char * top_string = "";
    sprintf(top_string, "Shell || Mode: %s\n", modes[mode]);
    fill(0, top_string);
  attroff(COLOR_PAIR(2));

  mvwprintw(stdscr, 1, 0, "$\n");
  if (mode == MODE_EDITOR)
  {
    attron(COLOR_PAIR(1));
    mvwprintw(stdscr, 3, 0, file_content[index]);
    attroff(COLOR_PAIR(1));
  }
  else if (mode == MODE_KEYPRESS)
  {
    printw("Pressed Key: %c | %d", b, b);
  }
  
  if (show_help)
  {
    attron(COLOR_PAIR(2));
      fill(20, help);
    attroff(COLOR_PAIR(2));
  }
  
  mvwprintw(stdscr, 21, 0, "Buffer Li");	
  
  if (b == 0x04) // CTRL+D
  {
    wmove(stdscr, 1, 1);
  }

  refresh();
}

void fill(int ln, char * str)
{
  int wd = 0, wh = 0;
  getmaxyx(stdscr, wh, wd);
  int l = len(str);
  for (int i = l; i < wd; i++)
  {
    mvwprintw(stdscr, ln, i, " ");
  }
}

int len(char * string)
{
  int a = 0;
  while (1)
  {
    if (string[a] == '\0') return a;
    a++;
  }
}

plebeian