internal static void HeaderNameValueEncode(string headerName, string headerValue, out string encodedHeaderName, out string encodedHeaderValue)
{
encodedHeaderName = ((!string.IsNullOrEmpty(headerName)) ? HttpEncoder.EncodeHeaderString(headerName) : headerName);
encodedHeaderValue = ((!string.IsNullOrEmpty(headerValue)) ? HttpEncoder.EncodeHeaderString(headerValue) : headerValue);
}
static HttpEncoder()
{
defaultEncoder = new HttpEncoder();
currentEncoder = defaultEncoder;
}
internal static string HtmlDecode(string s)
{
if (s == null)
{
return(null);
}
if (s.Length == 0)
{
return(string.Empty);
}
if (s.IndexOf('&') == -1)
{
return(s);
}
StringBuilder stringBuilder = new StringBuilder();
StringBuilder stringBuilder2 = new StringBuilder();
int length = s.Length;
int num = 0;
int num2 = 0;
bool flag = false;
bool flag2 = false;
for (int i = 0; i < length; i++)
{
char c = s[i];
if (num == 0)
{
if (c == '&')
{
stringBuilder.Append(c);
num = 1;
}
else
{
stringBuilder2.Append(c);
}
}
else if (c == '&')
{
num = 1;
if (flag2)
{
stringBuilder.Append(num2.ToString(Helpers.InvariantCulture));
flag2 = false;
}
stringBuilder2.Append(stringBuilder);
stringBuilder.Length = 0;
stringBuilder.Append('&');
}
else
{
switch (num)
{
case 1:
if (c == ';')
{
num = 0;
stringBuilder2.Append(stringBuilder);
stringBuilder2.Append(c);
stringBuilder.Length = 0;
}
else
{
num2 = 0;
flag = false;
num = ((c == '#') ? 3 : 2);
stringBuilder.Append(c);
}
break;
case 2:
stringBuilder.Append(c);
if (c == ';')
{
string text = stringBuilder.ToString();
if (text.Length > 1 && HttpEncoder.Entities.ContainsKey(text.Substring(1, text.Length - 2)))
{
text = HttpEncoder.Entities[text.Substring(1, text.Length - 2)].ToString();
}
stringBuilder2.Append(text);
num = 0;
stringBuilder.Length = 0;
}
break;
case 3:
if (c == ';')
{
if (num2 > 65535)
{
stringBuilder2.Append("&#");
stringBuilder2.Append(num2.ToString(Helpers.InvariantCulture));
stringBuilder2.Append(";");
}
else
{
stringBuilder2.Append((char)num2);
}
num = 0;
stringBuilder.Length = 0;
flag2 = false;
}
else if (flag && HttpEncoder.IsHexDigit(c))
{
num2 = num2 * 16 + HttpEncoder.FromHex(c);
flag2 = true;
}
else if (char.IsDigit(c))
{
num2 = num2 * 10 + (int)(c - '0');
flag2 = true;
}
else if (num2 == 0 && (c == 'x' || c == 'X'))
{
flag = true;
}
else
{
num = 2;
if (flag2)
{
stringBuilder.Append(num2.ToString(Helpers.InvariantCulture));
flag2 = false;
}
stringBuilder.Append(c);
}
break;
}
}
}
if (stringBuilder.Length > 0)
{
stringBuilder2.Append(stringBuilder);
}
else if (flag2)
{
stringBuilder2.Append(num2.ToString(Helpers.InvariantCulture));
}
return(stringBuilder2.ToString());
}
static HttpEncoder()
{
defaultEncoder = new HttpEncoder();
currentEncoder = defaultEncoder;
}
public static string HtmlAttributeEncode(string s)
{
return(HttpEncoder.HtmlAttributeEncode(s));
}
public static string UrlPathEncode(string s)
{
return(HttpEncoder.UrlPathEncode(s));
}
/// <summary>
/// Decodes an HTML-encoded string and returns the decoded string.
/// </summary>
/// <param name="s">The HTML string to decode. </param>
/// <returns>The decoded text.</returns>
public static string HtmlDecode(string s)
{
return(HttpEncoder.HtmlDecode(s));
}