Outputting Content to a Buffer

In the previous section, we echoed the maze to the echo area. However, echoing the maze to the echo area is not very practical. In this section, we will output the maze to a buffer so that users can yank the maze with daily Vim operations!

Let's modify the code to make the generated maze output to a buffer.

import type { Entrypoint } from "https://deno.land/x/denops_std@v6.5.0/mod.ts";
import { Maze } from "https://deno.land/x/maze_generator@v0.4.0/mod.js";

export const main: Entrypoint = (denops) => {
  denops.dispatcher = {
    async maze() {
      const maze = new Maze({}).generate();
      const content = maze.getString();
      await denops.cmd("enew");
      await denops.call("setline", 1, content.split(/\r?\n/g));
    },
  };
};

In this code, denops.cmd executes the Vim command enew to open a new buffer in the current window. Then, denops.call calls the Vim function setline() to write the maze to the buffer.

Restart Vim, rerun the Maze command, and then you can see: