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Current File : C:/inetpub/vhost/invest.gdtsolutions.vn/api/node_modules/validator/es/lib/isDataURI.js

import assertString from './util/assertString';
var validMediaType = /^[a-z]+\/[a-z0-9\-\+\._]+$/i;
var validAttribute = /^[a-z\-]+=[a-z0-9\-]+$/i;
var validData = /^[a-z0-9!\$&'\(\)\*\+,;=\-\._~:@\/\?%\s]*$/i;
export default function isDataURI(str) {
  assertString(str);
  var data = str.split(',');

  if (data.length < 2) {
    return false;
  }

  var attributes = data.shift().trim().split(';');
  var schemeAndMediaType = attributes.shift();

  if (schemeAndMediaType.slice(0, 5) !== 'data:') {
    return false;
  }

  var mediaType = schemeAndMediaType.slice(5);

  if (mediaType !== '' && !validMediaType.test(mediaType)) {
    return false;
  }

  for (var i = 0; i < attributes.length; i++) {
    if (!(i === attributes.length - 1 && attributes[i].toLowerCase() === 'base64') && !validAttribute.test(attributes[i])) {
      return false;
    }
  }

  for (var _i = 0; _i < data.length; _i++) {
    if (!validData.test(data[_i])) {
      return false;
    }
  }

  return true;
}