Function compressDataURI

docs/v1/data.js:4–10

(dataURI, callback)

var LZMA64_MARKER = ';bxze64,';

function compressDataURI(dataURI, callback) {
  var base64Index = dataURI.indexOf(BASE64_MARKER);
  var base64 = dataURI.substring(base64Index + BASE64_MARKER.length);
  stringToZip(base64ToByteArray(base64), function(result) {
    callback(dataURI.substring(0, base64Index) + LZMA64_MARKER + result)    
  })
}

function base64ToByteArray(base64) {
  var raw = window.atob(base64);