dynatrace-cordova-outsystems-plugin/node_modules/data-urls/lib/parser.js

This plugin gives you the ability to use the Dynatrace instrumentation in your hybrid application (Cordova, Ionic, ..). It uses the Mobile Agent, the JavaScript Agent and the Javascript Bridge. The Mobile Agent will give you all device specific values con

"use strict";
const MIMEType = require("whatwg-mimetype");
const { parseURL, serializeURL } = require("whatwg-url");
const {
  stripLeadingAndTrailingASCIIWhitespace,
  stringPercentDecode,
  isomorphicDecode,
  forgivingBase64Decode
} = require("./utils.js");

module.exports = stringInput => {
  const urlRecord = parseURL(stringInput);

  if (urlRecord === null) {
    return null;
  }

  return module.exports.fromURLRecord(urlRecord);
};

module.exports.fromURLRecord = urlRecord => {
  if (urlRecord.scheme !== "data") {
    return null;
  }

  const input = serializeURL(urlRecord, true).substring("data:".length);

  let position = 0;

  let mimeType = "";
  while (position < input.length && input[position] !== ",") {
    mimeType += input[position];
    ++position;
  }
  mimeType = stripLeadingAndTrailingASCIIWhitespace(mimeType);

  if (position === input.length) {
    return null;
  }

  ++position;

  const encodedBody = input.substring(position);

  let body = stringPercentDecode(encodedBody);

  // Can't use /i regexp flag because it isn't restricted to ASCII.
  const mimeTypeBase64MatchResult = /(.*); *[Bb][Aa][Ss][Ee]64$/.exec(mimeType);
  if (mimeTypeBase64MatchResult) {
    const stringBody = isomorphicDecode(body);
    body = forgivingBase64Decode(stringBody);

    if (body === null) {
      return null;
    }
    mimeType = mimeTypeBase64MatchResult[1];
  }

  if (mimeType.startsWith(";")) {
    mimeType = "text/plain" + mimeType;
  }

  let mimeTypeRecord;
  try {
    mimeTypeRecord = new MIMEType(mimeType);
  } catch (e) {
    mimeTypeRecord = new MIMEType("text/plain;charset=US-ASCII");
  }

  return {
    mimeType: mimeTypeRecord,
    body
  };
};