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using System;
using System.Collections.Generic;
using System.Text;
namespace LumiSoft.Net.SIP.Message
{
/// <summary>
/// Implements SIP "Identity-Info" value. Defined in RFC 4474.
/// </summary>
/// <remarks>
/// <code>
/// RFC 4474 Syntax:
/// Identity-Info = ident-info *( SEMI ident-info-params )
/// ident-info = LAQUOT absoluteURI RAQUOT
/// ident-info-params = ident-info-alg / ident-info-extension
/// ident-info-alg = "alg" EQUAL token
/// ident-info-extension = generic-param
/// </code>
/// </remarks>
public class SIP_t_IdentityInfo : SIP_t_ValueWithParams
{
private string m_Uri = "";
/// <summary>
/// Default constructor.
/// </summary>
/// <param name="value">SIP 'Identity-Info' value.</param>
public SIP_t_IdentityInfo(string value)
{
Parse(value);
}
#region method Parse
/// <summary>
/// Parses "Identity-Info" from specified value.
/// </summary>
/// <param name="value">SIP "Identity-Info" value.</param>
/// <exception cref="ArgumentNullException">Raised when <b>value</b> is null.</exception>
/// <exception cref="SIP_ParseException">Raised when invalid SIP message.</exception>
public void Parse(string value)
{
if(value == null){
throw new ArgumentNullException("value");
}
Parse(new StringReader(value));
}
/// <summary>
/// Parses "Identity-Info" from specified reader.
/// </summary>
/// <param name="reader">Reader from where to parse.</param>
/// <exception cref="ArgumentNullException">Raised when <b>reader</b> is null.</exception>
/// <exception cref="SIP_ParseException">Raised when invalid SIP message.</exception>
public override void Parse(StringReader reader)
{
/*
Identity-Info = ident-info *( SEMI ident-info-params )
ident-info = LAQUOT absoluteURI RAQUOT
ident-info-params = ident-info-alg / ident-info-extension
ident-info-alg = "alg" EQUAL token
ident-info-extension = generic-param
*/
if(reader == null){
throw new ArgumentNullException("reader");
}
// absoluteURI
try{
string word = reader.ReadParenthesized();
if(word == null){
throw new SIP_ParseException("Invalid Identity-Info 'absoluteURI' value !");
}
m_Uri = word;
}
catch{
throw new SIP_ParseException("Invalid Identity-Info 'absoluteURI' value !");
}
// Parse parameters
ParseParameters(reader);
}
#endregion
#region method ToStringValue
/// <summary>
/// Converts this to valid "Identity-Info" value.
/// </summary>
/// <returns>Returns "Identity-Info" value.</returns>
public override string ToStringValue()
{
/*
Identity-Info = ident-info *( SEMI ident-info-params )
ident-info = LAQUOT absoluteURI RAQUOT
ident-info-params = ident-info-alg / ident-info-extension
ident-info-alg = "alg" EQUAL token
ident-info-extension = generic-param
*/
StringBuilder retVal = new StringBuilder();
// absoluteURI
retVal.Append("<" + m_Uri + ">");
// Add parameters
retVal.Append(ParametersToString());
return retVal.ToString();
}
#endregion
#region Properties Implementation
/// <summary>
/// Gets or sets URI value.
/// </summary>
/// <exception cref="ArgumentNullException">Is raised when null value is passed.</exception>
/// <exception cref="ArgumentException">Is raised when invalid 'absoluteURI' value is passed.</exception>
public string Uri
{
get{ return m_Uri; }
set{
if(value == null){
throw new ArgumentNullException("Uri");
}
if(value == ""){
throw new ArgumentException("Invalid Identity-Info 'absoluteURI' value !");
}
m_Uri = value;
}
}
/// <summary>
/// Gets or sets 'alg' parameter value. Value null means not specified.
/// </summary>
public string Alg
{
get{
SIP_Parameter parameter = this.Parameters["alg"];
if(parameter != null){
return parameter.Value;
}
else{
return null;
}
}
set{
if(string.IsNullOrEmpty(value)){
this.Parameters.Remove("alg");
}
else{
this.Parameters.Set("alg",value);
}
}
}
#endregion
}
}
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