96 lines
3.1 KiB
JavaScript
96 lines
3.1 KiB
JavaScript
"use strict";
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.Md5FileHasher = void 0;
|
|
var md5_1 = require("./md5");
|
|
// Hashes any blob
|
|
var Md5FileHasher = /** @class */ (function () {
|
|
function Md5FileHasher(_callback, // Callback to return the result
|
|
_async, // Async version is not always available in a web worker
|
|
_partSize) {
|
|
if (_async === void 0) { _async = true; }
|
|
if (_partSize === void 0) { _partSize = 1048576; }
|
|
this._callback = _callback;
|
|
this._async = _async;
|
|
this._partSize = _partSize;
|
|
this._configureReader();
|
|
}
|
|
/**
|
|
* Hash a blob of data in the worker
|
|
* @param blob Data to hash
|
|
*/
|
|
Md5FileHasher.prototype.hash = function (blob) {
|
|
var self = this;
|
|
self._blob = blob;
|
|
// self._length = Math.ceil(blob.size / self._partSize);
|
|
self._part = 0;
|
|
self._md5 = new md5_1.Md5();
|
|
self._processPart();
|
|
};
|
|
Md5FileHasher.prototype._fail = function () {
|
|
this._callback({
|
|
success: false,
|
|
result: 'data read failed'
|
|
});
|
|
};
|
|
Md5FileHasher.prototype._hashData = function (e) {
|
|
var self = this;
|
|
self._md5.appendByteArray(new Uint8Array(e.target.result));
|
|
if (self._part * self._partSize >= self._blob.size) {
|
|
self._callback({
|
|
success: true,
|
|
result: self._md5.end()
|
|
});
|
|
}
|
|
else {
|
|
self._processPart();
|
|
}
|
|
};
|
|
Md5FileHasher.prototype._processPart = function () {
|
|
var self = this;
|
|
var endbyte = 0;
|
|
var current_part;
|
|
self._part += 1;
|
|
if (self._blob.size > self._partSize) { // If blob bigger then part_size we will slice it up
|
|
endbyte = self._part * self._partSize;
|
|
if (endbyte > self._blob.size) {
|
|
endbyte = self._blob.size;
|
|
}
|
|
current_part = self._blob.slice((self._part - 1) * self._partSize, endbyte);
|
|
}
|
|
else {
|
|
current_part = self._blob;
|
|
}
|
|
if (self._async) {
|
|
self._reader.readAsArrayBuffer(current_part);
|
|
}
|
|
else {
|
|
setTimeout(function () {
|
|
try {
|
|
self._hashData({
|
|
target: {
|
|
result: self._reader.readAsArrayBuffer(current_part)
|
|
},
|
|
});
|
|
}
|
|
catch (e) {
|
|
self._fail();
|
|
}
|
|
}, 0);
|
|
}
|
|
};
|
|
Md5FileHasher.prototype._configureReader = function () {
|
|
var self = this;
|
|
if (self._async) {
|
|
self._reader = new FileReader();
|
|
self._reader.onload = self._hashData.bind(self);
|
|
self._reader.onerror = self._fail.bind(self);
|
|
self._reader.onabort = self._fail.bind(self);
|
|
}
|
|
else {
|
|
self._reader = new FileReaderSync();
|
|
}
|
|
};
|
|
return Md5FileHasher;
|
|
}());
|
|
exports.Md5FileHasher = Md5FileHasher;
|
|
//# sourceMappingURL=md5_file_hasher.js.map
|