"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.RFC3966_PREFIX_ = exports.RFC3966_PHONE_CONTEXT_ = exports.RFC3966_ISDN_SUBADDRESS_ = exports.PLUS_SIGN = void 0;
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exports["default"] = extractPhoneContext;
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exports.isPhoneContextValid = isPhoneContextValid;
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var _constants = require("../constants.js");
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// When phone numbers are written in `RFC3966` format — `"tel:+12133734253"` —
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// they can have their "calling code" part written separately in a `phone-context` parameter.
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// Example: `"tel:12133734253;phone-context=+1"`.
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// This function parses the full phone number from the local number and the `phone-context`
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// when the `phone-context` contains a `+` sign.
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var PLUS_SIGN = '+';
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exports.PLUS_SIGN = PLUS_SIGN;
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var RFC3966_VISUAL_SEPARATOR_ = '[\\-\\.\\(\\)]?';
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var RFC3966_PHONE_DIGIT_ = '(' + '[' + _constants.VALID_DIGITS + ']' + '|' + RFC3966_VISUAL_SEPARATOR_ + ')';
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var RFC3966_GLOBAL_NUMBER_DIGITS_ = '^' + '\\' + PLUS_SIGN + RFC3966_PHONE_DIGIT_ + '*' + '[' + _constants.VALID_DIGITS + ']' + RFC3966_PHONE_DIGIT_ + '*' + '$';
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/**
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* Regular expression of valid global-number-digits for the phone-context
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* parameter, following the syntax defined in RFC3966.
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*/
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var RFC3966_GLOBAL_NUMBER_DIGITS_PATTERN_ = new RegExp(RFC3966_GLOBAL_NUMBER_DIGITS_, 'g'); // In this port of Google's library, we don't accept alpha characters in phone numbers.
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// const ALPHANUM_ = VALID_ALPHA_ + VALID_DIGITS
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var ALPHANUM_ = _constants.VALID_DIGITS;
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var RFC3966_DOMAINLABEL_ = '[' + ALPHANUM_ + ']+((\\-)*[' + ALPHANUM_ + '])*';
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var VALID_ALPHA_ = 'a-zA-Z';
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var RFC3966_TOPLABEL_ = '[' + VALID_ALPHA_ + ']+((\\-)*[' + ALPHANUM_ + '])*';
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var RFC3966_DOMAINNAME_ = '^(' + RFC3966_DOMAINLABEL_ + '\\.)*' + RFC3966_TOPLABEL_ + '\\.?$';
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/**
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* Regular expression of valid domainname for the phone-context parameter,
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* following the syntax defined in RFC3966.
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*/
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var RFC3966_DOMAINNAME_PATTERN_ = new RegExp(RFC3966_DOMAINNAME_, 'g');
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var RFC3966_PREFIX_ = 'tel:';
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exports.RFC3966_PREFIX_ = RFC3966_PREFIX_;
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var RFC3966_PHONE_CONTEXT_ = ';phone-context=';
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exports.RFC3966_PHONE_CONTEXT_ = RFC3966_PHONE_CONTEXT_;
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var RFC3966_ISDN_SUBADDRESS_ = ';isub=';
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/**
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* Extracts the value of the phone-context parameter of `numberToExtractFrom`,
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* following the syntax defined in RFC3966.
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*
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* @param {string} numberToExtractFrom
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* @return {string|null} the extracted string (possibly empty), or `null` if no phone-context parameter is found.
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*/
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exports.RFC3966_ISDN_SUBADDRESS_ = RFC3966_ISDN_SUBADDRESS_;
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function extractPhoneContext(numberToExtractFrom) {
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var indexOfPhoneContext = numberToExtractFrom.indexOf(RFC3966_PHONE_CONTEXT_); // If no phone-context parameter is present
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if (indexOfPhoneContext < 0) {
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return null;
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}
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var phoneContextStart = indexOfPhoneContext + RFC3966_PHONE_CONTEXT_.length; // If phone-context parameter is empty
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if (phoneContextStart >= numberToExtractFrom.length) {
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return '';
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}
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var phoneContextEnd = numberToExtractFrom.indexOf(';', phoneContextStart); // If phone-context is not the last parameter
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if (phoneContextEnd >= 0) {
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return numberToExtractFrom.substring(phoneContextStart, phoneContextEnd);
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} else {
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return numberToExtractFrom.substring(phoneContextStart);
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}
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}
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/**
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* Returns whether the value of phoneContext follows the syntax defined in RFC3966.
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*
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* @param {string|null} phoneContext
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* @return {boolean}
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*/
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function isPhoneContextValid(phoneContext) {
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if (phoneContext === null) {
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return true;
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}
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if (phoneContext.length === 0) {
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return false;
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} // Does phone-context value match pattern of global-number-digits or domainname.
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return RFC3966_GLOBAL_NUMBER_DIGITS_PATTERN_.test(phoneContext) || RFC3966_DOMAINNAME_PATTERN_.test(phoneContext);
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}
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//# sourceMappingURL=extractPhoneContext.js.map
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