148 lines
4.1 KiB
JavaScript
148 lines
4.1 KiB
JavaScript
angular.module('webui.services.utils', [])
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.factory('$utils', ['$filter', function(filter) {
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var rnd16 = (function() {
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"use strict";
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var rndBuffer = Uint8Array(16);
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var rnd16Weak = function() {
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for (var i = 0, r; i < 16; i++) {
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if (!(i % 0x3)) r = Math.random() * 0x100000000 | 0;
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rndBuffer[i] = r >>> ((i & 0x3) << 0x3) & 0xff;
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}
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return rndBuffer;
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};
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if (!crypto.getRandomValues) {
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return rnd16Weak;
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}
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return function() {
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try {
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crypto.getRandomValues(rndBuffer);
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return rndBuffer;
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}
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catch (ex) {
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// Entropy might be exhausted
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return rnd16Weak();
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}
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};
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})();
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return {
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// saves the key value pair in cookies
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setCookie: function(key, value) {
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var exdate = new Date();
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exdate.setDate(exdate.getDate() + 30 * 12);
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var cvalue = escape(JSON.stringify(value)) + "; expires=" + exdate.toUTCString();
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document.cookie = key + "=" + cvalue;
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},
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// gets a value for a key stored in cookies
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getCookie: function(key) {
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var chunks = document.cookie.split(";");
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for (var i = 0; i < chunks.length; i++) {
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var ckey = chunks[i].substr(0, chunks[i].indexOf("=")).replace(/^\s+|\s+$/g,"");
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var cvalue = chunks[i].substr(chunks[i].indexOf("=") + 1);
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if (key == ckey) {
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return JSON.parse(unescape(cvalue));
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}
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}
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return null;
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},
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getFileName: function(path) {
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var seed = path.split(/[/\\]/);
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return seed[seed.length - 1];
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},
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uuid: (function() {
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var bt = [];
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for (var i = 0; i < 0x100; ++i) {
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bt.push((i + 0x100).toString(16).substr(1));
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}
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Object.freeze(bt);
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return function() {
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var r = rnd16();
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r[6] = (r[6] & 0xf) | 0x40; // Version 4
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r[8] = (r[8] & 0x3f) | 0x80; // Version 4y
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return bt[r[0]] + bt[r[1]] + bt[r[2]] + bt[r[3]] + "-" +
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bt[r[4]] + bt[r[5]] + "-" +
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bt[r[6]] + bt[r[7]] + "-" +
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bt[r[8]] + bt[r[9]] + "-" +
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bt[r[10]] + bt[r[11]] + bt[r[12]] + bt[r[13]] + bt[r[14]] + bt[r[15]];
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};
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})(),
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randStr: function() {
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return this.uuid();
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},
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// maps the array in place to the destination
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// arr, dest (optional): array
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// func: a merge mapping func, see ctrls/download.js
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mergeMap: function(arr, dest, func) {
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if (!dest) dest = [];
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for (var i = 0; i < dest.length; i++) {
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if (i >= arr.length) {
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// remove the deleted downloads
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dest.splice(i, dest.length - arr.length);
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break;
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}
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if (!dest[i]) dest[i] = {};
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func(arr[i], dest[i]);
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}
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// insert newly created downloads
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while (i < arr.length) {
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dest.push(func(arr[i++]));
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}
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return dest;
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},
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// get info title from global statistics
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getTitle: function(stats) {
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var title =
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'('
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+ ' active:' + stats.numActive
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+ ' waiting:' + stats.numWaiting
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+ ' stopped:' + stats.numStopped
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+ ') '
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+ 'aria2 Web Client';
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return title;
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},
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// get download chunks from aria2 bitfield
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getChunksFromHex: function(bitfield, numOfPieces) {
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var chunks = [], len = 0, numPieces = parseInt(numOfPieces);
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if (!bitfield) return [];
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var totalDownloaded = 0;
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if (numPieces > 1) {
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var chunk_ratio = 1 / numPieces;
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var piecesProcessed = 0;
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for (var i = 0; i < bitfield.length; i++) {
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var hex = parseInt(bitfield[i], 16);
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for (var j = 1; j <= 4; j++) {
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var bit = hex & (1 << (4 - j));
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if (bit) totalDownloaded++;
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var prog = !!bit;
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if (len >= 1 && chunks[len - 1].show == prog) {
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chunks[len - 1].ratio += chunk_ratio;
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}
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else {
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chunks.push({
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ratio: chunk_ratio,
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show: prog
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});
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len++;
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}
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piecesProcessed++;
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if (piecesProcessed == numPieces)
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return chunks;
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}
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}
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}
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return chunks;
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}
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};
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}]);
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