kni/console.js at main · borkshop/kni · GitHub

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import Excerpt from './excerpt.js';
import Wrapper from './wrapper.js';

export default class Console {
  constructor(writer) {
    this.writer = writer;
    this.wrapper = new Wrapper(writer);
    this.excerpt = new Excerpt();
    this.options = [];
    this.cursor = this.excerpt;
  }

  write(lift, text, drop) {
    this.cursor.digest(lift, text, drop);
  }

  break() {
    this.cursor.break();
  }

  paragraph() {
    this.cursor.paragraph();
  }

  startOption() {
    const option = new Excerpt();
    this.cursor = option;
    this.options.push(option);
  }

  stopOption() {
    this.cursor = this.excerpt;
  }

  flush() {
    this.writer.write('\n');
  }

  pardon() {
    this.writer.write('?\n');
  }

  display() {
    this.excerpt.write(this.wrapper);
    for (let i = 0; i < this.options.length; i++) {
      const number = i + 1;
      const lead = `${`${number}.   `.slice(0, 3)} `;
      this.wrapper.word(lead);
      this.wrapper.flush = true;
      this.wrapper.push('    ', '   ');
      this.options[i].write(this.wrapper);
      this.wrapper.pop();
    }
  }

  clear() {
    this.excerpt = new Excerpt();
    this.options = [];
    this.cursor = this.excerpt;
  }
}