b38dea0597
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84 lines
2.1 KiB
JavaScript
84 lines
2.1 KiB
JavaScript
/**
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* @fileoverview This file provides common helper functions used to manipulate
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* access point names (APNs)
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*/
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/* exported ApnHelper */
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(function(exports) {
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'use strict';
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/**
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* List of data network types, see source/dom/system/gonk/ril_consts.js in
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* mozilla-central. Those match the equivalent Android integer types.
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*/
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var NETWORK_TYPES = [
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null,
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'gprs',
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'edge',
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'umts',
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'is95a',
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'is95b',
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'1xrtt',
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'evdo0',
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'evdoa',
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'hsdpa',
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'hsupa',
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'hspa',
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'evdob',
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'ehrpd',
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'lte',
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'hspa+',
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'gsm'
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];
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/**
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* Filter a list of APNs by network type. This involves comparing the bearer
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* field if present to the data network type and checking if they match. If
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* the bearer value of an APN is not defined or is set to 0 then we consider
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* the APN compatible with any network.
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*
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* @param {Array} apns An array of APNs
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* @param {String} type The network type which the APNs must be compatible
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* with
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*/
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function ah_filterByBearer(apns, type) {
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var typeIdx = NETWORK_TYPES.indexOf(type);
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for (var i = 0; i < apns.length; i++) {
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var bearer = apns[i].bearer ? +apns[i].bearer : 0;
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if (bearer && (bearer !== typeIdx)) {
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// This APN is incompatible, remove it from the array
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apns.splice(i, 1);
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}
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}
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}
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/**
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* Get an APN from the specified list which is compatible with the specified
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* MCC, MNC and connection type
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*
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* @param {Object} list The global APN list, the format should be the same as
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* the one used in apn.json
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* @param {Integer} mcc The mobile country code
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* @param {Integer} mnc The mobile network code
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* @param {String} type The network type which the filtered APNs must be
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* compatible with
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*
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* @return {Array} A list of compatible APNs
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*/
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function ah_getCompatible(list, mcc, mnc, type) {
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var apns = list[mcc] ? (list[mcc][mnc] || []) : [];
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ah_filterByBearer(apns, type);
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return apns;
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}
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var ApnHelper = {
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getCompatible: ah_getCompatible
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};
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exports.ApnHelper = ApnHelper;
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})(this);
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