Text Editor in cpp

Creating a simple text editor in C++ involves building a basic user interface, handling user input, and managing the file operations to open, edit, and save text files. You can use libraries like ncurses or GUI libraries like Qt for creating a text editor with a graphical user interface. Here's a basic example of a console-based text editor using C++ and ncurses:

#include <ncurses.h>

#include <fstream>

#include <string>

int main() {

    initscr(); // Initialize ncurses

    raw();     // Line buffering disabled

    keypad(stdscr, TRUE); // Enable special keys like arrow keys

    noecho(); // Don't echo user input

    curs_set(2); // Set cursor to visible

    WINDOW* win = newwin(LINES - 1, COLS, 0, 0); // Create a window

    scrollok(win, TRUE); // Enable scrolling

    std::string filename = "text.txt";

    std::ifstream file(filename);

    std::string line;

    if (file.is_open()) {

        while (getline(file, line)) {

            waddstr(win, line.c_str()); // Display the contents of the file

            waddch(win, '\n');

        }

        file.close();

    }

    wrefresh(win);

    int ch;

    while ((ch = wgetch(win)) != KEY_F(2)) {

        switch (ch) {

            case KEY_DOWN:

                wscrl(win, 1); // Scroll down

                break;

            case KEY_UP:

                wscrl(win, -1); // Scroll up

                break;

            case 10: // Enter key

                waddch(win, '\n');

                break;

            case KEY_BACKSPACE:

            case 127: // Backspace key

                wdelch(win);

                break;

            default:

                waddch(win, ch); // Print the character

                break;

        }

        wrefresh(win);

    }

    std::ofstream outfile(filename);

    wmove(win, 0, 0);

    while (wgetch(win) != ERR) {

        char buffer[COLS];

        winnstr(win, buffer, COLS);

        outfile << buffer << '\n';

    }

    outfile.close();

    delwin(win);

    endwin(); // End ncurses

    return 0;

}

In this code, we use the ncurses library for creating a basic console-based text editor. It allows you to navigate the text, add or delete characters, and save the edited content back to a file.

Remember that this is a very simple example, and a real-world text editor would require more features and error handling. If you want a more feature-rich text editor with a graphical user interface, you might consider using a GUI library like Qt or other alternatives, depending on your specific requirements.