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Viewing file:     PhoneNumberMatcher.js (15.4 KB)      -rw-r--r--

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

/**
 * A port of Google's `PhoneNumberMatcher.java`.
 * https://github.com/googlei18n/libphonenumber/blob/master/java/libphonenumber/src/com/google/i18n/phonenumbers/PhoneNumberMatcher.java
 * Date: 08.03.2018.
 */
import PhoneNumber from './PhoneNumber';
import { MAX_LENGTH_FOR_NSN, MAX_LENGTH_COUNTRY_CODE, VALID_PUNCTUATION } from './constants';
import createExtensionPattern from './helpers/extension/createExtensionPattern';
import RegExpCache from './findNumbers/RegExpCache';
import { limit, trimAfterFirstMatch } from './findNumbers/util';
import { _pL, _pN, pZ, PZ, pNd } from './findNumbers/utf-8';
import Leniency from './findNumbers/Leniency';
import parsePreCandidate from './findNumbers/parsePreCandidate';
import isValidPreCandidate from './findNumbers/isValidPreCandidate';
import isValidCandidate, { LEAD_CLASS } from './findNumbers/isValidCandidate';
import { isSupportedCountry } from './metadata';
import parseNumber from './parse_';
var EXTN_PATTERNS_FOR_MATCHING = createExtensionPattern('matching');
/**
 * Patterns used to extract phone numbers from a larger phone-number-like pattern. These are
 * ordered according to specificity. For example, white-space is last since that is frequently
 * used in numbers, not just to separate two numbers. We have separate patterns since we don't
 * want to break up the phone-number-like text on more than one different kind of symbol at one
 * time, although symbols of the same type (e.g. space) can be safely grouped together.
 *
 * Note that if there is a match, we will always check any text found up to the first match as
 * well.
 */

var INNER_MATCHES = [// Breaks on the slash - e.g. "651-234-2345/332-445-1234"
'\\/+(.*)/', // Note that the bracket here is inside the capturing group, since we consider it part of the
// phone number. Will match a pattern like "(650) 223 3345 (754) 223 3321".
'(\\([^(]*)', // Breaks on a hyphen - e.g. "12345 - 332-445-1234 is my number."
// We require a space on either side of the hyphen for it to be considered a separator.
"(?:".concat(pZ, "-|-").concat(pZ, ")").concat(pZ, "*(.+)"), // Various types of wide hyphens. Note we have decided not to enforce a space here, since it's
// possible that it's supposed to be used to break two numbers without spaces, and we haven't
// seen many instances of it used within a number.
"[\u2012-\u2015\uFF0D]".concat(pZ, "*(.+)"), // Breaks on a full stop - e.g. "12345. 332-445-1234 is my number."
"\\.+".concat(pZ, "*([^.]+)"), // Breaks on space - e.g. "3324451234 8002341234"
"".concat(pZ, "+(").concat(PZ, "+)")]; // Limit on the number of leading (plus) characters.

var leadLimit = limit(0, 2); // Limit on the number of consecutive punctuation characters.

var punctuationLimit = limit(0, 4);
/* The maximum number of digits allowed in a digit-separated block. As we allow all digits in a
 * single block, set high enough to accommodate the entire national number and the international
 * country code. */

var digitBlockLimit = MAX_LENGTH_FOR_NSN + MAX_LENGTH_COUNTRY_CODE; // Limit on the number of blocks separated by punctuation.
// Uses digitBlockLimit since some formats use spaces to separate each digit.

var blockLimit = limit(0, digitBlockLimit);
/* A punctuation sequence allowing white space. */

var punctuation = "[".concat(VALID_PUNCTUATION, "]") + punctuationLimit; // A digits block without punctuation.

var digitSequence = pNd + limit(1, digitBlockLimit);
/**
 * Phone number pattern allowing optional punctuation.
 * The phone number pattern used by `find()`, similar to
 * VALID_PHONE_NUMBER, but with the following differences:
 * <ul>
 *   <li>All captures are limited in order to place an upper bound to the text matched by the
 *       pattern.
 * <ul>
 *   <li>Leading punctuation / plus signs are limited.
 *   <li>Consecutive occurrences of punctuation are limited.
 *   <li>Number of digits is limited.
 * </ul>
 *   <li>No whitespace is allowed at the start or end.
 *   <li>No alpha digits (vanity numbers such as 1-800-SIX-FLAGS) are currently supported.
 * </ul>
 */

var PATTERN = '(?:' + LEAD_CLASS + punctuation + ')' + leadLimit + digitSequence + '(?:' + punctuation + digitSequence + ')' + blockLimit + '(?:' + EXTN_PATTERNS_FOR_MATCHING + ')?'; // Regular expression of trailing characters that we want to remove.
// We remove all characters that are not alpha or numerical characters.
// The hash character is retained here, as it may signify
// the previous block was an extension.
//
// // Don't know what does '&&' mean here.
// const UNWANTED_END_CHAR_PATTERN = new RegExp(`[[\\P{N}&&\\P{L}]&&[^#]]+$`)
//

var UNWANTED_END_CHAR_PATTERN = new RegExp("[^".concat(_pN).concat(_pL, "#]+$"));
var NON_DIGITS_PATTERN = /(\D+)/;
var MAX_SAFE_INTEGER = Number.MAX_SAFE_INTEGER || Math.pow(2, 53) - 1;
/**
 * A stateful class that finds and extracts telephone numbers from {@linkplain CharSequence text}.
 * Instances can be created using the {@linkplain PhoneNumberUtil#findNumbers factory methods} in
 * {@link PhoneNumberUtil}.
 *
 * <p>Vanity numbers (phone numbers using alphabetic digits such as <tt>1-800-SIX-FLAGS</tt> are
 * not found.
 *
 * <p>This class is not thread-safe.
 */

var PhoneNumberMatcher =
/*#__PURE__*/
function () {
  /** The iteration tristate. */

  /** The next index to start searching at. Undefined in {@link State#DONE}. */
  // A cache for frequently used country-specific regular expressions. Set to 32 to cover ~2-3
  // countries being used for the same doc with ~10 patterns for each country. Some pages will have
  // a lot more countries in use, but typically fewer numbers for each so expanding the cache for
  // that use-case won't have a lot of benefit.

  /**
   * Creates a new instance. See the factory methods in {@link PhoneNumberUtil} on how to obtain a
   * new instance.
   *
   * @param util  the phone number util to use
   * @param text  the character sequence that we will search, null for no text
   * @param country  the country to assume for phone numbers not written in international format
   *     (with a leading plus, or with the international dialing prefix of the specified region).
   *     May be null or "ZZ" if only numbers with a leading plus should be
   *     considered.
   * @param leniency  the leniency to use when evaluating candidate phone numbers
   * @param maxTries  the maximum number of invalid numbers to try before giving up on the text.
   *     This is to cover degenerate cases where the text has a lot of false positives in it. Must
   *     be {@code >= 0}.
   */
  function PhoneNumberMatcher() {
    var text = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : '';
    var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
    var metadata = arguments.length > 2 ? arguments[2] : undefined;

    _classCallCheck(this, PhoneNumberMatcher);

    _defineProperty(this, "state", 'NOT_READY');

    _defineProperty(this, "searchIndex", 0);

    _defineProperty(this, "regExpCache", new RegExpCache(32));

    options = _objectSpread({}, options, {
      defaultCallingCode: options.defaultCallingCode,
      defaultCountry: options.defaultCountry && isSupportedCountry(options.defaultCountry, metadata) ? options.defaultCountry : undefined,
      leniency: options.leniency || options.extended ? 'POSSIBLE' : 'VALID',
      maxTries: options.maxTries || MAX_SAFE_INTEGER
    });

    if (!options.leniency) {
      throw new TypeError('`Leniency` not supplied');
    }

    if (options.maxTries < 0) {
      throw new TypeError('`maxTries` not supplied');
    }

    this.text = text;
    this.options = options;
    this.metadata = metadata;
    /** The degree of validation requested. */

    this.leniency = Leniency[options.leniency];

    if (!this.leniency) {
      throw new TypeError("Unknown leniency: ".concat(options.leniency, "."));
    }
    /** The maximum number of retries after matching an invalid number. */


    this.maxTries = options.maxTries;
    this.PATTERN = new RegExp(PATTERN, 'ig');
  }
  /**
   * Attempts to find the next subsequence in the searched sequence on or after {@code searchIndex}
   * that represents a phone number. Returns the next match, null if none was found.
   *
   * @param index  the search index to start searching at
   * @return  the phone number match found, null if none can be found
   */


  _createClass(PhoneNumberMatcher, [{
    key: "find",
    value: function find() {
      // // Reset the regular expression.
      // this.PATTERN.lastIndex = index
      var matches;

      while (this.maxTries > 0 && (matches = this.PATTERN.exec(this.text)) !== null) {
        var candidate = matches[0];
        var offset = matches.index;
        candidate = parsePreCandidate(candidate);

        if (isValidPreCandidate(candidate, offset, this.text)) {
          var match = // Try to come up with a valid match given the entire candidate.
          this.parseAndVerify(candidate, offset, this.text) // If that failed, try to find an "inner match" -
          // there might be a phone number within this candidate.
          || this.extractInnerMatch(candidate, offset, this.text);

          if (match) {
            if (this.options.v2) {
              var phoneNumber = new PhoneNumber(match.country || match.countryCallingCode, match.phone, this.metadata);

              if (match.ext) {
                phoneNumber.ext = match.ext;
              }

              return {
                startsAt: match.startsAt,
                endsAt: match.endsAt,
                number: phoneNumber
              };
            }

            return match;
          }
        }

        this.maxTries--;
      }
    }
    /**
     * Attempts to extract a match from `substring`
     * if the substring itself does not qualify as a match.
     */

  }, {
    key: "extractInnerMatch",
    value: function extractInnerMatch(substring, offset, text) {
      for (var _i = 0, _INNER_MATCHES = INNER_MATCHES; _i < _INNER_MATCHES.length; _i++) {
        var innerMatchPattern = _INNER_MATCHES[_i];
        var isFirstMatch = true;
        var candidateMatch = void 0;
        var innerMatchRegExp = new RegExp(innerMatchPattern, 'g');

        while (this.maxTries > 0 && (candidateMatch = innerMatchRegExp.exec(substring)) !== null) {
          if (isFirstMatch) {
            // We should handle any group before this one too.
            var _candidate = trimAfterFirstMatch(UNWANTED_END_CHAR_PATTERN, substring.slice(0, candidateMatch.index));

            var _match = this.parseAndVerify(_candidate, offset, text);

            if (_match) {
              return _match;
            }

            this.maxTries--;
            isFirstMatch = false;
          }

          var candidate = trimAfterFirstMatch(UNWANTED_END_CHAR_PATTERN, candidateMatch[1]); // Java code does `groupMatcher.start(1)` here,
          // but there's no way in javascript to get a `candidate` start index,
          // therefore resort to using this kind of an approximation.
          // (`groupMatcher` is called `candidateInSubstringMatch` in this javascript port)
          // https://stackoverflow.com/questions/15934353/get-index-of-each-capture-in-a-javascript-regex

          var candidateIndexGuess = substring.indexOf(candidate, candidateMatch.index);
          var match = this.parseAndVerify(candidate, offset + candidateIndexGuess, text);

          if (match) {
            return match;
          }

          this.maxTries--;
        }
      }
    }
    /**
     * Parses a phone number from the `candidate` using `parseNumber` and
     * verifies it matches the requested `leniency`. If parsing and verification succeed,
     * a corresponding `PhoneNumberMatch` is returned, otherwise this method returns `null`.
     *
     * @param candidate  the candidate match
     * @param offset  the offset of {@code candidate} within {@link #text}
     * @return  the parsed and validated phone number match, or null
     */

  }, {
    key: "parseAndVerify",
    value: function parseAndVerify(candidate, offset, text) {
      if (!isValidCandidate(candidate, offset, text, this.options.leniency)) {
        return;
      }

      var number = parseNumber(candidate, {
        extended: true,
        defaultCountry: this.options.defaultCountry,
        defaultCallingCode: this.options.defaultCallingCode
      }, this.metadata);

      if (!number.possible) {
        return;
      }

      if (this.leniency(number, candidate, this.metadata, this.regExpCache)) {
        // // We used parseAndKeepRawInput to create this number,
        // // but for now we don't return the extra values parsed.
        // // TODO: stop clearing all values here and switch all users over
        // // to using rawInput() rather than the rawString() of PhoneNumberMatch.
        // number.clearCountryCodeSource()
        // number.clearRawInput()
        // number.clearPreferredDomesticCarrierCode()
        var result = {
          startsAt: offset,
          endsAt: offset + candidate.length,
          phone: number.phone
        };

        if (number.country && number.country !== '001') {
          result.country = number.country;
        } else {
          result.countryCallingCode = number.countryCallingCode;
        }

        if (number.ext) {
          result.ext = number.ext;
        }

        return result;
      }
    }
  }, {
    key: "hasNext",
    value: function hasNext() {
      if (this.state === 'NOT_READY') {
        this.lastMatch = this.find(); // (this.searchIndex)

        if (this.lastMatch) {
          // this.searchIndex = this.lastMatch.endsAt
          this.state = 'READY';
        } else {
          this.state = 'DONE';
        }
      }

      return this.state === 'READY';
    }
  }, {
    key: "next",
    value: function next() {
      // Check the state and find the next match as a side-effect if necessary.
      if (!this.hasNext()) {
        throw new Error('No next element');
      } // Don't retain that memory any longer than necessary.


      var result = this.lastMatch;
      this.lastMatch = null;
      this.state = 'NOT_READY';
      return result;
    }
  }]);

  return PhoneNumberMatcher;
}();

export { PhoneNumberMatcher as default };
//# sourceMappingURL=PhoneNumberMatcher.js.map