portainer/app/docker/helpers/logHelper.js

angular.module('portainer.docker').factory('LogHelper', [
  function LogHelperFactory() {
    'use strict';
    var helper = {};

    // Return an array with each line being an entry.
    // It will also remove any ANSI code related character sequences.
    // If the skipHeaders param is specified, it will strip the 8 first characters of each line.
    helper.formatLogs = function (logs, skipHeaders) {
      logs = logs.replace(/[\u001b\u009b][[()#;?]*(?:[0-9]{1,4}(?:;[0-9]{0,4})*)?[0-9A-ORZcf-nqry=><]/g, '');

      if (skipHeaders) {
        logs = logs.substring(8);
        logs = logs.replace(/\n(.{8})/g, '\n\r');
      }

      return logs.split('\n');
    };

    return helper;
  },
]);