font_factory.js

import fs from 'fs';
import fontkit from 'fontkit';
import StandardFont from './font/standard';
import EmbeddedFont from './font/embedded';

class PDFFontFactory {
  static open(document, src, family, id, subset = true) {
    let font;
    if (typeof src === 'string') {
      if (StandardFont.isStandardFont(src)) {
        return new StandardFont(document, src, id);
      }

      src = fs.readFileSync(src);
    }
    if (Buffer.isBuffer(src)) {
      font = fontkit.create(src, family);
    } else if (src instanceof Uint8Array) {
      font = fontkit.create(Buffer.from(src), family);
    } else if (src instanceof ArrayBuffer) {
      font = fontkit.create(Buffer.from(new Uint8Array(src)), family);
    }

    if (font == null) {
      throw new Error('Not a supported font format or standard PDF font.');
    }

    return new EmbeddedFont(document, font, id, subset);
  }
}

export default PDFFontFactory;