Get HTML from OS X RTF clipboard

pbpaste-html.js

var $ = require('nodobjc');
$.framework('AppKit');

function getNSData(data) {
  var byteBuffer = new Buffer(data('length'));
  data('getBytes', byteBuffer, 'length', byteBuffer.length);
  return byteBuffer;
}

var toHtmlOpts = $.NSDictionary(
  'dictionaryWithObject', $.NSHTMLTextDocumentType,
  'forKey', $.NSDocumentTypeDocumentAttribute);

function rtfToHtml(rtfData) {
  var attrString = $.NSAttributedString('alloc')(
    'initWithRTF', rtfData,
    'documentAttributes', null);

  var htmlData = attrString(
    'dataFromRange', $.NSMakeRange(0, attrString('length')),
    'documentAttributes', toHtmlOpts,
    'error', null);

  return getNSData(htmlData);
}

function getRtfHtml(pboard) {
  var rtfData = pboard('dataForType', $.NSString('stringWithUTF8String', 'public.rtf'));
  if (!rtfData) {
    console.error('No public.rtf data in pasteboard');
    process.exit(1);
  }
  console.log(rtfToHtml(rtfData).toString('utf8'));
}

getRtfHtml($.NSPasteboard('generalPasteboard'));