/// <summary>
/// Parse a header
/// </summary>
/// <param name="name">Name of header.</param>
/// <param name="reader">Reader containing value.</param>
/// <returns>HTTP Header</returns>
/// <exception cref="FormatException">Header value is not of the expected format.</exception>
public IHeader Parse(string name, ITextReader reader)
{
//key: "value"; key: "value"
var cookies = new RequestCookieCollection();
while (!reader.EOF)
{
// read name
string cookieName = reader.ReadToEnd("=;");
// cookie with value?
if (reader.Current == '=')
{
reader.Consume();
reader.ConsumeWhiteSpaces();
// is value quoted or not?
string value = reader.Current == '"' ? reader.ReadQuotedString() : reader.ReadToEnd(";");
cookies.Add(new RequestCookie(cookieName, value));
}
//else
// cookies.Add(new RequestCookie(cookieName, string.Empty));
// consume whitespaces and cookie separator
reader.ConsumeWhiteSpaces(';');
}
return(new CookieHeader(cookies));
}
/// <summary>
/// Parse a header
/// </summary>
/// <param name="name">Name of header.</param>
/// <param name="reader">Reader containing value.</param>
/// <returns>HTTP Header</returns>
/// <exception cref="FormatException">Header value is not of the expected format.</exception>
public IHeader Parse(string name, ITextReader reader)
{
//key: "value"; key: "value"
var cookies = new RequestCookieCollection();
while (!reader.EOF)
{
// read name
string cookieName = reader.ReadToEnd("=;");
// cookie with value?
if (reader.Current == '=')
{
reader.Consume();
reader.ConsumeWhiteSpaces();
// is value quoted or not?
string value = reader.Current == '"' ? reader.ReadQuotedString() : reader.ReadToEnd(";");
cookies.Add(new RequestCookie(cookieName, value));
}
// consume whitespaces and cookie separator
reader.ConsumeWhiteSpaces(';');
}
return new CookieHeader(cookies);
}
/// <summary>
/// Parse parameters.
/// </summary>
/// <param name="reader">Parser containing buffer to parse.</param>
/// <param name="delimiter">Parameter delimiter</param>
/// <returns>A collection with all parameters (or just a empty collection).</returns>
/// <exception cref="FormatException">Expected a value after equal sign.</exception>
public static HeaderParameterCollection Parse(ITextReader reader, char delimiter)
{
if (reader.Current == delimiter)
reader.Consume();
reader.ConsumeWhiteSpaces();
var collection = new HeaderParameterCollection();
string name = reader.ReadToEnd("=" + delimiter);
while (name != string.Empty && !reader.EOF)
{
// got a parameter value
if (reader.Current == '=')
{
reader.ConsumeWhiteSpaces('=');
string value = reader.Current == '"'
? reader.ReadQuotedString()
: reader.ReadToEnd(delimiter);
reader.ConsumeWhiteSpaces();
if (value == string.Empty && reader.Current != delimiter)
throw new FormatException("Expected a value after equal sign.");
collection.Add(name, value);
}
else // got no value
{
collection.Add(name, string.Empty);
}
reader.ConsumeWhiteSpaces(delimiter); // consume delimiter and white spaces
name = reader.ReadToEnd("=" + delimiter);
}
return collection;
}
/// <summary>
/// Parse all semicolon separated parameters.
/// </summary>
/// <param name="parameters">String containing all parameters to parse</param>
/// <param name="delimiter">Delimiter separating parameters.</param>
/// <example>
/// <code>
/// KeyValueCollection parameters = new KeyValueCollection();
/// UriParser.ParseParameters(parameters, "hej=hello,welcome=now", ',');
/// </code>
/// </example>
/// <remarks>
/// Parameter names are converted to lower case.
/// </remarks>
public static void ParseParameters(IKeyValueCollection <string, string> parameters, ITextReader reader,
char delimiter)
{
reader.Consume(' ', '\t');
while (!reader.EOF)
{
if (reader.Current == delimiter)
{
reader.Consume();
}
if (reader.EOF)
{
return;
}
reader.Consume(' ', '\t');
string name = reader.ReadToEnd("=" + delimiter);
if (name == null)
{
break;
}
name = name.ToLower();
// No semicolon after last parameter.
if (reader.EOF)
{
parameters.Add(name, string.Empty);
return;
}
if (reader.Current == delimiter)
{
parameters.Add(name, string.Empty);
continue;
}
reader.Consume(' ', '\t', '=');
string value = reader.Current == '"' ? reader.ReadQuotedString() : reader.ReadToEnd(" \t" + delimiter);
// no value
if (value == null)
{
parameters.Add(name, string.Empty);
continue;
}
parameters.Add(name, value);
reader.Consume(' ', '\t');
if (reader.Current != delimiter)
{
break;
}
}
}
/// <summary>
/// Parse parameters.
/// </summary>
/// <param name="reader">Parser containing buffer to parse.</param>
/// <param name="delimiter">Parameter delimiter</param>
/// <returns>A collection with all parameters (or just a empty collection).</returns>
/// <exception cref="FormatException">Expected a value after equal sign.</exception>
public static HeaderParameterCollection Parse(ITextReader reader, char delimiter)
{
if (reader.Current == delimiter)
{
reader.Consume();
}
reader.ConsumeWhiteSpaces();
var collection = new HeaderParameterCollection();
string name = reader.ReadToEnd("=" + delimiter);
while (name != string.Empty && !reader.EOF)
{
// got a parameter value
if (reader.Current == '=')
{
reader.ConsumeWhiteSpaces('=');
string value = reader.Current == '"'
? reader.ReadQuotedString()
: reader.ReadToEnd(delimiter);
reader.ConsumeWhiteSpaces();
if (value == string.Empty && reader.Current != delimiter)
{
throw new FormatException("Expected a value after equal sign.");
}
collection.Add(name, value);
}
else // got no value
{
collection.Add(name, string.Empty);
}
reader.ConsumeWhiteSpaces(delimiter); // consume delimiter and white spaces
name = reader.ReadToEnd("=" + delimiter);
}
return(collection);
}
/// <summary>
/// Parse a header
/// </summary>
/// <param name="name">Name of header.</param>
/// <param name="reader">Reader containing value.</param>
/// <returns>HTTP Header</returns>
/// <exception cref="System.FormatException">Header value is not of the expected format.</exception>
public IHeader Create(string name, ITextReader reader)
{
if (reader == null) return null;
var cookies = new RequestCookieCollection();
while (!reader.Eof)
{
string cookieName = reader.ReadToEnd("=;");
if (reader.Current == '=')
{
reader.Consume();
reader.ConsumeWhiteSpaces();
string value = reader.Current == '"' ? reader.ReadQuotedString() : reader.ReadToEnd(";");
cookies.Add(cookieName, new RequestCookie(cookieName, value));
}
reader.ConsumeWhiteSpaces(';');
}
return new CookieHeader(cookies);
}
public static Contact ParseContact(ITextReader reader)
{
/*
* When the header field value contains a display name, the URI
* including all URI parameters is enclosed in "<" and ">". If no "<"
* and ">" are present, all parameters after the URI are header
* parameters, not URI parameters. The display name can be tokens, or a
* quoted string, if a larger character set is desired.
*/
reader.ConsumeWhiteSpaces();
string name;
if (reader.Current == '\"')
{
name = reader.ReadQuotedString();
reader.Consume('\t', ' ');
}
else
{
name = string.Empty;
}
SipUri uri;
bool isEnclosed = reader.Current == '<';
if (reader.Current != '<' && name != string.Empty)
{
throw new FormatException("Expected to find '<' in contact.");
}
reader.Consume();
string uriText = isEnclosed ? reader.ReadToEnd('>') : reader.ReadToEnd(';');
if (uriText == null)
{
throw new FormatException("Failed to find '>' in contact.");
}
try
{
uri = Parse(uriText);
}
catch (FormatException err)
{
throw new FormatException("Failed to parse uri in contact.", err);
}
reader.Consume('>', '\t', ' ');
// Read parameters.
var parameters = new KeyValueCollection();
ParseParameters(parameters, reader);
return(new Contact(parameters)
{
Name = name, Uri = uri
});
}
/// <summary>
/// Parse all semicolon separated parameters.
/// </summary>
/// <param name="parameters">String containing all parameters to parse</param>
/// <param name="delimiter">Delimiter separating parameters.</param>
/// <example>
/// <code>
/// KeyValueCollection parameters = new KeyValueCollection();
/// UriParser.ParseParameters(parameters, "hej=hello,welcome=now", ',');
/// </code>
/// </example>
/// <remarks>
/// Parameter names are converted to lower case.
/// </remarks>
public static void ParseParameters(IKeyValueCollection<string, string> parameters, ITextReader reader,
char delimiter)
{
reader.Consume(' ', '\t');
while (!reader.EOF)
{
if (reader.Current == delimiter)
reader.Consume();
if (reader.EOF)
return;
reader.Consume(' ', '\t');
string name = reader.ReadToEnd("=" + delimiter);
if (name == null)
break;
name = name.ToLower();
// No semicolon after last parameter.
if (reader.EOF)
{
parameters.Add(name, string.Empty);
return;
}
if (reader.Current == delimiter)
{
parameters.Add(name, string.Empty);
continue;
}
reader.Consume(' ', '\t', '=');
string value = reader.Current == '"' ? reader.ReadQuotedString() : reader.ReadToEnd(" \t" + delimiter);
// no value
if (value == null)
{
parameters.Add(name, string.Empty);
continue;
}
parameters.Add(name, value);
reader.Consume(' ', '\t');
if (reader.Current != delimiter)
break;
}
}
public static Contact ParseContact(ITextReader reader)
{
/*
When the header field value contains a display name, the URI
including all URI parameters is enclosed in "<" and ">". If no "<"
and ">" are present, all parameters after the URI are header
parameters, not URI parameters. The display name can be tokens, or a
quoted string, if a larger character set is desired.
*/
reader.ConsumeWhiteSpaces();
string name;
if (reader.Current == '\"')
{
name = reader.ReadQuotedString();
reader.Consume('\t', ' ');
}
else
name = string.Empty;
SipUri uri;
bool isEnclosed = reader.Current == '<';
if (reader.Current != '<' && name != string.Empty)
throw new FormatException("Expected to find '<' in contact.");
reader.Consume();
string uriText = isEnclosed ? reader.ReadToEnd('>') : reader.ReadToEnd(';');
if (uriText == null)
throw new FormatException("Failed to find '>' in contact.");
try
{
uri = Parse(uriText);
}
catch (FormatException err)
{
throw new FormatException("Failed to parse uri in contact.", err);
}
reader.Consume('>', '\t', ' ');
// Read parameters.
var parameters = new KeyValueCollection();
ParseParameters(parameters, reader);
return new Contact(parameters) {Name = name, Uri = uri};
}
