text: /**
   * https://github.com/apocas/dockerode/blob/master/lib/util.js
   * Parse the given repo tag name (as a string) and break it out into repo/tag pair.
   * // if given the input http://localhost:8080/woot:latest
   * {
   *   repository: 'http://localhost:8080/woot',
   *   tag: 'latest'
   * }
   * @param {String} input Input e.g: 'repo/foo', 'ubuntu', 'ubuntu:latest'
   * @return {Object} input parsed into the repo and tag.
   */
  
  function parseRepoTag (input) {
    var separatorPos
    var digestPos = input.indexOf('@')
    var colonPos = input.lastIndexOf(':')
    // @ symbol is more important
    if (digestPos >= 0) {
      separatorPos = digestPos
    } else if (colonPos >= 0) {
      separatorPos = colonPos
    } else {
      // no colon nor @
      return {
        repository: input
      }
    }
  
    // last colon is either the tag (or part of a port designation)
    var tag = input.slice(separatorPos + 1)
  
    // if it contains a / its not a tag and is part of the url
    if (tag.indexOf('/') === -1) {
      return {
        repository: input.slice(0, separatorPos),
        tag
      }
    }
  
    return {
      repository: input
    }
  }
  
  export default parseRepoTag
  