Function parseImageSize

packages/ui-default/backendlib/markdown-it-imsize.ts:20–50

(str, pos, max)

}

function parseImageSize(str, pos, max) {
  const result = {
    ok: false,
    pos: 0,
    width: '',
    height: '',
  };
  if (pos >= max) return result;
  let code = str.charCodeAt(pos);
  if (code !== 0x3D /* = */) return result;
  pos++;
  code = str.charCodeAt(pos);
  if (code !== 0x78 /* x */ && (code < 0x30 || code > 0x39) /* [0-9] */) {
    return result;
  }
  // parse width
  const resultW = parseNextNumber(str, pos, max);
  pos = resultW.pos;
  // next charactor must be 'x'
  code = str.charCodeAt(pos);
  if (code !== 0x78 /* x */) { return result; }
  pos++;
  // parse height
  const resultH = parseNextNumber(str, pos, max);
  pos = resultH.pos;
  result.width = resultW.value;
  result.height = resultH.value;
  result.pos = pos;
  result.ok = true;
  return result;
}

export default function plugin(md) {
  md.inline.ruler.before('emphasis', 'image', (state, silent) => {