| public static IsHexEncoding ( string pattern, int index ) : bool | ||
| pattern | string | |
| index | int | |
| return | bool | |
// userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
private static bool ParseUser(ParserState state)
{
string part = state.remaining;
StringBuilder sb = null;
int index;
for (index = 0; index < part.Length; index++)
{
char ch = part [index];
bool isEscapedChar = false;
var oldIndex = index;
if (ch == '%')
{
if (!Uri.IsHexEncoding(part, index))
{
return(false);
}
ch = Uri.HexUnescape(part, ref index);
index--;
isEscapedChar = true;
}
if (!Char.IsLetterOrDigit(ch) && !IsUnreserved(ch) && !IsSubDelim(ch) && ch != ':')
{
if (!isEscapedChar)
{
break;
}
ch = '%';
index = oldIndex;
}
if (sb == null)
{
sb = new StringBuilder();
}
sb.Append(ch);
}
if (index + 1 <= part.Length && part [index] == '@')
{
if (state.elements.scheme == Uri.UriSchemeFile)
{
state.error = "Invalid URI: The hostname could not be parsed.";
return(false);
}
state.elements.user = sb == null ? "" : sb.ToString();
state.remaining = state.remaining.Substring(index + 1);
}
return(state.remaining.Length > 0);
}
/// <summary>
/// 解码汉字
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string UnEscape(this string str)
{
StringBuilder sb = new StringBuilder();
int len = str.Length;
int i = 0;
while (i != len)
{
if (Uri.IsHexEncoding(str, i))
{
sb.Append(Uri.HexUnescape(str, ref i));
}
else
{
sb.Append(str[i++]);
}
}
return(sb.ToString());
}
// userinfo = *( unreserved / pct-encoded / sub-delims / ":" )
private static bool ParseUser(ref ParserState state)
{
string part = state.remaining;
StringBuilder sb = null;
int index;
for (index = 0; index < part.Length; index++)
{
char ch = part [index];
if (ch == '%')
{
if (!Uri.IsHexEncoding(part, index))
{
return(false);
}
ch = Uri.HexUnescape(part, ref index);
}
if (Char.IsLetterOrDigit(ch) || IsUnreserved(ch) || IsSubDelim(ch) || ch == ':')
{
if (sb == null)
{
sb = new StringBuilder();
}
sb.Append(ch);
}
else
{
break;
}
}
if (index + 1 <= part.Length && part [index] == '@')
{
state.elements.user = sb == null ? "" : sb.ToString();
state.remaining = state.remaining.Substring(index + 1);
}
return(state.remaining.Length > 0);
}
