public static string UrlEncode(string url)
{
if (url == null)
{
return(null);
}
byte[] array = Encoding.UTF8.GetBytes(url);
bool flag = false;
int num = 0;
byte[] array2 = array;
for (int i = 0; i < array2.Length; i++)
{
byte b = array2[i];
if (b == 32)
{
flag = true;
}
else if (!Utility._UrlEncodeIsSafe(b))
{
num++;
flag = true;
}
}
if (flag)
{
byte[] array3 = new byte[array.Length + num * 2];
int num2 = 0;
byte[] array4 = array;
for (int j = 0; j < array4.Length; j++)
{
byte b2 = array4[j];
if (Utility._UrlEncodeIsSafe(b2))
{
array3[num2++] = b2;
}
else if (b2 == 32)
{
array3[num2++] = 43;
}
else
{
array3[num2++] = 37;
array3[num2++] = Utility._IntToHex(b2 >> 4 & 15);
array3[num2++] = Utility._IntToHex((int)(b2 & 15));
}
}
array = array3;
}
return(Encoding.ASCII.GetString(array));
}
public static string UrlEncode(string url)
{
if (url == null)
{
return(null);
}
byte[] bytes = Encoding.UTF8.GetBytes(url);
bool flag = false;
int num = 0;
byte[] numArray = bytes;
for (int i = 0; i < (int)numArray.Length; i++)
{
byte num1 = numArray[i];
if (num1 == 32)
{
flag = true;
}
else if (!Utility._UrlEncodeIsSafe(num1))
{
num++;
flag = true;
}
}
if (flag)
{
byte[] hex = new byte[(int)bytes.Length + num * 2];
int num2 = 0;
byte[] numArray1 = bytes;
for (int j = 0; j < (int)numArray1.Length; j++)
{
byte num3 = numArray1[j];
if (Utility._UrlEncodeIsSafe(num3))
{
int num4 = num2;
num2 = num4 + 1;
hex[num4] = num3;
}
else if (num3 != 32)
{
int num5 = num2;
num2 = num5 + 1;
hex[num5] = 37;
int num6 = num2;
num2 = num6 + 1;
hex[num6] = Utility._IntToHex(num3 >> 4 & 15);
int num7 = num2;
num2 = num7 + 1;
hex[num7] = Utility._IntToHex(num3 & 15);
}
else
{
int num8 = num2;
num2 = num8 + 1;
hex[num8] = 43;
}
}
bytes = hex;
}
return(Encoding.ASCII.GetString(bytes));
}