public ParserState(string uri)
{
remaining = uri;
elements = new UriElements();
}
// protected methods
protected internal virtual string GetComponents(Uri uri, UriComponents components, UriFormat format)
{
if ((format < UriFormat.UriEscaped) || (format > UriFormat.SafeUnescaped))
{
throw new ArgumentOutOfRangeException("format");
}
UriElements elements = UriParseComponents.ParseComponents(uri.OriginalString.Trim());
string scheme = scheme_name;
int dp = default_port;
if ((scheme == null) || (scheme == "*"))
{
scheme = elements.scheme;
#if SSHARP
dp = KnownProtocols.GetProtocolDefaultPort(scheme);
#else
dp = Uri.GetDefaultPort(scheme);
#endif
}
else if (String.Compare(scheme, elements.scheme, true) != 0)
{
throw new SystemException("URI Parser: scheme mismatch: " + scheme + " vs. " + elements.scheme);
}
// it's easier to answer some case directly (as the output isn't identical
// when mixed with others components, e.g. leading slash, # ...)
switch (components)
{
case UriComponents.Scheme:
return(scheme);
case UriComponents.UserInfo:
return(elements.user);
case UriComponents.Host:
return(elements.host);
case UriComponents.Port:
{
string p = elements.port;
if (p != null && p.Length != 0 && p != dp.ToString())
{
return(p);
}
return(String.Empty);
}
case UriComponents.Path:
return(Format(IgnoreFirstCharIf(elements.path, '/'), format));
case UriComponents.Query:
return(Format(elements.query, format));
case UriComponents.Fragment:
return(Format(elements.fragment, format));
case UriComponents.StrongPort:
{
return(elements.port.Length != 0 ? elements.port : dp.ToString());
}
case UriComponents.SerializationInfoString:
components = UriComponents.AbsoluteUri;
break;
}
// now we deal with multiple flags...
StringBuilder sb = new StringBuilder();
if ((components & UriComponents.Scheme) != 0)
{
sb.Append(scheme);
#if SSHARP
sb.Append(scheme == "mailto" || scheme == "news" ? ":" : Uri.SchemeDelimiter);
#else
sb.Append(Uri.GetSchemeDelimiter(scheme));
#endif
}
if ((components & UriComponents.UserInfo) != 0)
{
string userinfo = elements.user;
if (!String.IsNullOrEmpty(userinfo))
{
sb.Append(elements.user);
sb.Append('@');
}
}
if ((components & UriComponents.Host) != 0)
{
sb.Append(elements.host);
}
// for StrongPort always show port - even if -1
// otherwise only display if ut's not the default port
if ((components & UriComponents.StrongPort) != 0)
{
sb.Append(":");
if (elements.port.Length != 0)
{
sb.Append(elements.port);
}
else
{
sb.Append(dp);
}
}
if ((components & UriComponents.Port) != 0)
{
string p = elements.port;
if (p != null && p.Length != 0 && p != dp.ToString())
{
sb.Append(":");
sb.Append(elements.port);
}
}
if ((components & UriComponents.Path) != 0)
{
if ((components & UriComponents.PathAndQuery) != 0 &&
(elements.path.Length == 0 || !elements.path.StartsWith("/")))
{
sb.Append("/");
}
sb.Append(elements.path);
}
if ((components & UriComponents.Query) != 0)
{
string query = elements.query;
if (!String.IsNullOrEmpty(query))
{
sb.Append("?");
sb.Append(elements.query);
}
}
string result = Format(sb.ToString(), format);
if ((components & UriComponents.Fragment) != 0)
{
string f = elements.fragment;
if (!String.IsNullOrEmpty(f))
{
result += "#" + Format(f, format);
}
}
return(result);
}
