rxdb/dist/esm/plugins/utils/utils-string.js

A local-first realtime NoSQL Database for JavaScript applications - https://rxdb.info/

var COUCH_NAME_CHARS = 'abcdefghijklmnopqrstuvwxyz';

/**
 * Get a random string which can be used for many things in RxDB.
 * The returned string is guaranteed to be a valid database name or collection name
 * and also to be a valid JavaScript variable name.
 * 
 * @link http://stackoverflow.com/a/1349426/3443137
 */
export function randomToken(length = 10) {
  var text = '';
  for (var i = 0; i < length; i++) {
    text += COUCH_NAME_CHARS.charAt(Math.floor(Math.random() * COUCH_NAME_CHARS.length));
  }
  return text;
}

/**
 * A random string that is never inside of any storage
 */
export var RANDOM_STRING = 'Fz7SZXPmYJujkzjY1rpXWvlWBqoGAfAX';

/**
 * uppercase first char
 */
export function ucfirst(str) {
  str += '';
  var f = str.charAt(0).toUpperCase();
  return f + str.substr(1);
}

/**
 * removes trailing and ending dots from the string
 */
export function trimDots(str) {
  var start = 0;
  var end = str.length;
  // charCode 46 is a dot ('.')
  while (start < end && str.charCodeAt(start) === 46) {
    start++;
  }
  while (end > start && str.charCodeAt(end - 1) === 46) {
    end--;
  }
  if (start === 0 && end === str.length) {
    return str;
  }
  return str.substring(start, end);
}

/**
 * @link https://stackoverflow.com/a/44950500/3443137
 */
export function lastCharOfString(str) {
  return str.charAt(str.length - 1);
}

/**
 * returns true if the given name is likely a folder path
 */
export function isFolderPath(name) {
  // do not check, if foldername is given
  if (name.includes('/') ||
  // unix
  name.includes('\\') // windows
  ) {
    return true;
  } else {
    return false;
  }
}

/**
 * @link https://gist.github.com/andreburgaud/6f73fd2d690b629346b8
 * @link https://stackoverflow.com/a/76240378/3443137
 */
export function arrayBufferToString(arrayBuffer) {
  return new TextDecoder().decode(arrayBuffer);
}
export function stringToArrayBuffer(str) {
  return new TextEncoder().encode(str);
}
export function normalizeString(str) {
  return str.trim().replace(/[\n\s]+/g, '');
}
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