/// <summary>
/// Parses SIP_Uri from SIP-URI string.
/// </summary>
/// <param name="value">SIP-URI string.</param>
/// <returns>Returns parsed SIP_Uri object.</returns>
/// <exception cref="ArgumentNullException">Raised when <b>reader</b> is null.</exception>
/// <exception cref="SIP_ParseException">Raised when invalid SIP message.</exception>
protected override void ParseInternal(string value)
{
// Syntax: sip:/sips: username@host:port *[;parameter] [?header *[&header]]
if (value == null)
{
throw new ArgumentNullException("value");
}
value = Uri.UnescapeDataString(value);
if (!(value.ToLower().StartsWith("sip:") || value.ToLower().StartsWith("sips:")))
{
throw new SIP_ParseException("Specified value is invalid SIP-URI !");
}
StringReader r = new StringReader(value);
// IsSecure
this.IsSecure = r.QuotedReadToDelimiter(':').ToLower() == "sips";
// Get username
if (r.SourceString.IndexOf('@') > -1)
{
this.User = r.QuotedReadToDelimiter('@');
}
// Gets host[:port]
string[] host_port = r.QuotedReadToDelimiter(new char[] { ';', '?' }, false).Split(':');
this.Host = host_port[0];
// Optional port specified
if (host_port.Length == 2)
{
this.Port = Convert.ToInt32(host_port[1]);
}
// We have parameters and/or header
if (r.Available > 0)
{
// Get parameters
string[] parameters = TextUtils.SplitQuotedString(r.QuotedReadToDelimiter('?'), ';');
foreach (string parameter in parameters)
{
if (parameter.Trim() != "")
{
string[] name_value = parameter.Trim().Split(new char[] { '=' }, 2);
if (name_value.Length == 2)
{
this.Parameters.Add(name_value[0], TextUtils.UnQuoteString(name_value[1]));
}
else
{
this.Parameters.Add(name_value[0], null);
}
}
}
// We have header
if (r.Available > 0)
{
this.m_Header = r.ReadToEnd();
}
}
}
/// <summary>
/// Reads word from string. Returns null if no word is available.
/// Word reading begins from first char, for example if SP"text", then space is trimmed.
/// </summary>
/// <param name="unQuote">Specifies if quoted string word is unquoted.</param>
/// <param name="wordTerminatorChars">Specifies chars what terminate word.</param>
/// <param name="removeWordTerminator">Specifies if work terminator is removed.</param>
/// <returns></returns>
public string ReadWord(bool unQuote, char[] wordTerminatorChars, bool removeWordTerminator)
{
// Always start word reading from first char.
this.ReadToFirstChar();
if (this.Available == 0)
{
return(null);
}
// quoted word can contain any char, " must be escaped with \
// unqouted word can conatin any char except: SP VTAB HTAB,{}()[]<>
if (m_SourceString.StartsWith("\""))
{
if (unQuote)
{
return(TextUtils.UnQuoteString(QuotedReadToDelimiter(wordTerminatorChars, removeWordTerminator)));
}
else
{
return(QuotedReadToDelimiter(wordTerminatorChars, removeWordTerminator));
}
}
else
{
int wordLength = 0;
for (int i = 0; i < m_SourceString.Length; i++)
{
char c = m_SourceString[i];
bool isTerminator = false;
foreach (char terminator in wordTerminatorChars)
{
if (c == terminator)
{
isTerminator = true;
break;
}
}
if (isTerminator)
{
break;
}
wordLength++;
}
string retVal = m_SourceString.Substring(0, wordLength);
if (removeWordTerminator)
{
if (m_SourceString.Length >= wordLength + 1)
{
m_SourceString = m_SourceString.Substring(wordLength + 1);
}
}
else
{
m_SourceString = m_SourceString.Substring(wordLength);
}
return(retVal);
}
}