angular.module('webui.services.utils', ['webui.services.constants']) .factory('$utils', ['$filter', "$name", function(filter, $name) { var rnd16 = (function() { "use strict"; var rndBuffer = new Uint8Array(16); var rnd16Weak = function() { for (var i = 0, r; i < 16; i++) { if (!(i % 0x3)) r = Math.random() * 0x100000000 | 0; rndBuffer[i] = r >>> ((i & 0x3) << 0x3) & 0xff; } return rndBuffer; }; if (!window.crypto || !crypto.getRandomValues) { return rnd16Weak; } return function() { try { crypto.getRandomValues(rndBuffer); return rndBuffer; } catch (ex) { // Entropy might be exhausted return rnd16Weak(); } }; })(); var utils = { fmtsize: function(len) { len = +len; // coerce to number if (len <= 1024) { return len.toFixed(0) + " B"; } len /= 1024; if (len <= 1024) { return len.toFixed(1) + " KB" } len /= 1024; if (len <= 1024) { return len.toFixed(2) + " MB"; } len /= 1024; return len.toFixed(3) + " GB"; }, fmtspeed: function(speed) { return utils.fmtsize(speed) + "/s"; }, // saves the key value pair in cookies setCookie: function(key, value) { var exdate = new Date(); exdate.setDate(exdate.getDate() + 30 * 12); var cvalue = escape(JSON.stringify(value)) + "; expires=" + exdate.toUTCString(); document.cookie = key + "=" + cvalue; }, // gets a value for a key stored in cookies getCookie: function(key) { var chunks = document.cookie.split(";"); for (var i = 0; i < chunks.length; i++) { var ckey = chunks[i].substr(0, chunks[i].indexOf("=")).replace(/^\s+|\s+$/g,""); var cvalue = chunks[i].substr(chunks[i].indexOf("=") + 1); if (key == ckey) { return JSON.parse(unescape(cvalue)); } } return null; }, getFileName: function(path) { var seed = path.split(/[/\\]/); return seed[seed.length - 1]; }, uuid: (function() { var bt = []; for (var i = 0; i < 0x100; ++i) { bt.push((i + 0x100).toString(16).substr(1)); } Object.freeze(bt); return function() { var r = rnd16(); r[6] = (r[6] & 0xf) | 0x40; // Version 4 r[8] = (r[8] & 0x3f) | 0x80; // Version 4y return bt[r[0]] + bt[r[1]] + bt[r[2]] + bt[r[3]] + "-" + bt[r[4]] + bt[r[5]] + "-" + bt[r[6]] + bt[r[7]] + "-" + bt[r[8]] + bt[r[9]] + "-" + bt[r[10]] + bt[r[11]] + bt[r[12]] + bt[r[13]] + bt[r[14]] + bt[r[15]]; }; })(), randStr: function() { return utils.uuid(); }, // maps the array in place to the destination // arr, dest (optional): array // func: a merge mapping func, see ctrls/download.js mergeMap: function(arr, dest, func) { if (!dest) { dest = []; } for (var i = 0, e = Math.min(arr.length, dest.length); i < e; ++i) { func(arr[i], dest[i]); } // Insert newly created downloads while (i < arr.length) { dest.push(func(arr[i++])); } // Truncate if necessary. dest.length = arr.length; return dest; }, // get info title from global statistics getTitle: function(stats) { var title = 'active: ' + stats.numActive + ' - waiting: ' + stats.numWaiting + ' - stopped: ' + stats.numStopped + ' — ' + $name; return title; }, // get download chunks from aria2 bitfield getChunksFromHex: function(bitfield, numOfPieces) { var chunks = [], len = 0, numPieces = parseInt(numOfPieces); if (!bitfield) return []; var totalDownloaded = 0; if (numPieces > 1) { var chunk_ratio = 1 / numPieces; var piecesProcessed = 0; for (var i = 0; i < bitfield.length; i++) { var hex = parseInt(bitfield[i], 16); for (var j = 1; j <= 4; j++) { var bit = hex & (1 << (4 - j)); if (bit) totalDownloaded++; var prog = !!bit; if (len >= 1 && chunks[len - 1].show == prog) { chunks[len - 1].ratio += chunk_ratio; } else { chunks.push({ ratio: chunk_ratio, show: prog }); len++; } piecesProcessed++; if (piecesProcessed == numPieces) return chunks; } } } return chunks; } }; return utils; }]);