corelink/index.js

Utility library for parsing CoRE Link Format

const add =  function(a,b) {
  const [oid,iid,rid] = b.split('/');

  if (iid === undefined) {
    a[oid] = null;
  } else if (!a.hasOwnProperty(oid)) {
    if (rid === undefined)
      a[oid] = [iid];
    else 
      a[oid] = { [iid] : [rid] };
  } else if (Array.isArray(a[oid])) {
    a[oid].push(iid);
  } else if (!a[oid].hasOwnProperty(iid)) {
    a[oid][iid] = [rid];
  } else {
    a[oid][iid].push(rid);
  }

  return a;
}

exports.parse = function(str) {
  return str
    .replace(/(<\/|>)+/g, '')
    .split(',')
    .reduce(add, {})
}