gecko-dev/b2g/components/TelURIParser.jsm

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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
this.EXPORTED_SYMBOLS = ["TelURIParser"];
/**
* Singleton providing functionality for parsing tel: and sms: URIs
*/
this.TelURIParser = {
parseURI: function(scheme, uri) {
// https://www.ietf.org/rfc/rfc2806.txt
let subscriber = decodeURIComponent(uri.slice((scheme + ':').length));
if (!subscriber.length) {
return null;
}
let number = '';
let pos = 0;
let len = subscriber.length;
// visual-separator
let visualSeparator = [ ' ', '-', '.', '(', ')' ];
let digits = [ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9' ];
let dtmfDigits = [ '*', '#', 'A', 'B', 'C', 'D' ];
let pauseCharacter = [ 'p', 'w' ];
// global-phone-number
if (subscriber[pos] == '+') {
number += '+';
for (++pos; pos < len; ++pos) {
if (visualSeparator.indexOf(subscriber[pos]) != -1) {
number += subscriber[pos];
} else if (digits.indexOf(subscriber[pos]) != -1) {
number += subscriber[pos];
} else {
break;
}
}
}
// local-phone-number
else {
for (; pos < len; ++pos) {
if (visualSeparator.indexOf(subscriber[pos]) != -1) {
number += subscriber[pos];
} else if (digits.indexOf(subscriber[pos]) != -1) {
number += subscriber[pos];
} else if (dtmfDigits.indexOf(subscriber[pos]) != -1) {
number += subscriber[pos];
} else if (pauseCharacter.indexOf(subscriber[pos]) != -1) {
number += subscriber[pos];
} else {
break;
}
}
// this means error
if (!number.length) {
return null;
}
// isdn-subaddress
if (subscriber.substring(pos, pos + 6) == ';isub=') {
let subaddress = '';
for (pos += 6; pos < len; ++pos) {
if (visualSeparator.indexOf(subscriber[pos]) != -1) {
subaddress += subscriber[pos];
} else if (digits.indexOf(subscriber[pos]) != -1) {
subaddress += subscriber[pos];
} else {
break;
}
}
// FIXME: ignore subaddress - Bug 795242
}
// post-dial
if (subscriber.substring(pos, pos + 7) == ';postd=') {
let subaddress = '';
for (pos += 7; pos < len; ++pos) {
if (visualSeparator.indexOf(subscriber[pos]) != -1) {
subaddress += subscriber[pos];
} else if (digits.indexOf(subscriber[pos]) != -1) {
subaddress += subscriber[pos];
} else if (dtmfDigits.indexOf(subscriber[pos]) != -1) {
subaddress += subscriber[pos];
} else if (pauseCharacter.indexOf(subscriber[pos]) != -1) {
subaddress += subscriber[pos];
} else {
break;
}
}
// FIXME: ignore subaddress - Bug 795242
}
// area-specific
if (subscriber.substring(pos, pos + 15) == ';phone-context=') {
pos += 15;
// global-network-prefix | local-network-prefix | private-prefi
number = subscriber.substring(pos, subscriber.length) + number;
}
}
// Ignore MWI and USSD codes. See 794034.
if (number.match(/[#\*]/) && !number.match(/^[#\*]\d+$/)) {
return null;
}
return number || null;
}
};