webui-aria2/js/services/utils.js
2013-01-29 17:47:40 +05:00

77 lines
2.1 KiB
JavaScript

angular.module('webui.services.utils', [])
.factory('$utils', function() {
return {
getFileName: function(path) {
var seed = path.split(/[/\\]/);
return seed[seed.length - 1];
},
randStr: function() {
var str = [];
var hexDigits = "0123456789abcdef";
for (var i = 0; i < 36; i++) {
str[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
}
return str.join("");
},
// 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 (i = 0; i < dest.length; i++) {
if (i >= arr.length) {
// remove the deleted downloads
dest.splice(i, dest.length - arr.length);
break;
}
if (!dest[i]) dest[i] = {};
func(arr[i], dest[i]);
}
// insert newly created downloads
while (i < arr.length) {
dest.push(func(arr[i++]));
}
return dest;
},
// 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;
}
};
});