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Move, rename, and simplify toArrayBuffer helper

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This function is only ever used to convert groupIds from strings to
array buffers in sendmessage.

// FREEBIE
This commit is contained in:
lilia 2016-03-12 16:58:21 -08:00
parent c22a205d2e
commit 3e0bce2b21
4 changed files with 49 additions and 78 deletions
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26
libtextsecure/helpers.js
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@ -33,32 +33,6 @@ function getStringable(thing) {
thing.__proto__ == StaticByteBufferProto)));
}
function toArrayBuffer(thing) {
//TODO: Optimize this for specific cases
if (thing === undefined)
return undefined;
if (thing === Object(thing) && thing.__proto__ == StaticArrayBufferProto)
return thing;
if (thing instanceof Array) {
// Assuming Uint16Array from curve25519
var res = new ArrayBuffer(thing.length * 2);
var uint = new Uint16Array(res);
for (var i = 0; i < thing.length; i++)
uint[i] = thing[i];
return res;
}
if (!getStringable(thing))
throw new Error("Tried to convert a non-stringable thing of type " + typeof thing + " to an array buffer");
var str = getString(thing);
var res = new ArrayBuffer(str.length);
var uint = new Uint8Array(res);
for (var i = 0; i < str.length; i++)
uint[i] = str.charCodeAt(i);
return res;
}
// Number formatting utils
window.textsecure.utils = function() {
var self = {};