libphonenumber-js/es6/AsYouTypeFormatter.util.js

A simpler (and smaller) rewrite of Google Android's libphonenumber library in javascript

// Should be the same as `DIGIT_PLACEHOLDER` in `libphonenumber-metadata-generator`.
export var DIGIT_PLACEHOLDER = 'x'; // '\u2008' (punctuation space)

var DIGIT_PLACEHOLDER_MATCHER = new RegExp(DIGIT_PLACEHOLDER); // Counts all occurences of a symbol in a string.
// Unicode-unsafe (because using `.split()`).

export function countOccurences(symbol, string) {
  var count = 0; // Using `.split('')` to iterate through a string here
  // to avoid requiring `Symbol.iterator` polyfill.
  // `.split('')` is generally not safe for Unicode,
  // but in this particular case for counting brackets it is safe.
  // for (const character of string)

  for (var _iterator = string.split(''), _isArray = Array.isArray(_iterator), _i = 0, _iterator = _isArray ? _iterator : _iterator[Symbol.iterator]();;) {
    var _ref;

    if (_isArray) {
      if (_i >= _iterator.length) break;
      _ref = _iterator[_i++];
    } else {
      _i = _iterator.next();
      if (_i.done) break;
      _ref = _i.value;
    }

    var character = _ref;

    if (character === symbol) {
      count++;
    }
  }

  return count;
} // Repeats a string (or a symbol) N times.
// http://stackoverflow.com/questions/202605/repeat-string-javascript

export function repeat(string, times) {
  if (times < 1) {
    return '';
  }

  var result = '';

  while (times > 1) {
    if (times & 1) {
      result += string;
    }

    times >>= 1;
    string += string;
  }

  return result + string;
}
export function cutAndStripNonPairedParens(string, cutBeforeIndex) {
  if (string[cutBeforeIndex] === ')') {
    cutBeforeIndex++;
  }

  return stripNonPairedParens(string.slice(0, cutBeforeIndex));
}
export function closeNonPairedParens(template, cut_before) {
  var retained_template = template.slice(0, cut_before);
  var opening_braces = countOccurences('(', retained_template);
  var closing_braces = countOccurences(')', retained_template);
  var dangling_braces = opening_braces - closing_braces;

  while (dangling_braces > 0 && cut_before < template.length) {
    if (template[cut_before] === ')') {
      dangling_braces--;
    }

    cut_before++;
  }

  return template.slice(0, cut_before);
}
export function stripNonPairedParens(string) {
  var dangling_braces = [];
  var i = 0;

  while (i < string.length) {
    if (string[i] === '(') {
      dangling_braces.push(i);
    } else if (string[i] === ')') {
      dangling_braces.pop();
    }

    i++;
  }

  var start = 0;
  var cleared_string = '';
  dangling_braces.push(string.length);

  for (var _i2 = 0, _dangling_braces = dangling_braces; _i2 < _dangling_braces.length; _i2++) {
    var index = _dangling_braces[_i2];
    cleared_string += string.slice(start, index);
    start = index + 1;
  }

  return cleared_string;
}
export function populateTemplateWithDigits(template, position, digits) {
  // Using `.split('')` to iterate through a string here
  // to avoid requiring `Symbol.iterator` polyfill.
  // `.split('')` is generally not safe for Unicode,
  // but in this particular case for `digits` it is safe.
  // for (const digit of digits)
  for (var _iterator2 = digits.split(''), _isArray2 = Array.isArray(_iterator2), _i3 = 0, _iterator2 = _isArray2 ? _iterator2 : _iterator2[Symbol.iterator]();;) {
    var _ref2;

    if (_isArray2) {
      if (_i3 >= _iterator2.length) break;
      _ref2 = _iterator2[_i3++];
    } else {
      _i3 = _iterator2.next();
      if (_i3.done) break;
      _ref2 = _i3.value;
    }

    var digit = _ref2;

    // If there is room for more digits in current `template`,
    // then set the next digit in the `template`,
    // and return the formatted digits so far.
    // If more digits are entered than the current format could handle.
    if (template.slice(position + 1).search(DIGIT_PLACEHOLDER_MATCHER) < 0) {
      return;
    }

    position = template.search(DIGIT_PLACEHOLDER_MATCHER);
    template = template.replace(DIGIT_PLACEHOLDER_MATCHER, digit);
  }

  return [template, position];
}
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