private static LLSD ParseNotationElement(string notationData, out int endPos)
{
if (notationData.Length == 0)
{
endPos = 0;
return(null);
}
// Identify what type of object this is
switch (notationData[0])
{
case '!':
endPos = 1;
return(new LLSD());
case '1':
endPos = 1;
return(LLSD.FromBoolean(true));
case '0':
endPos = 1;
return(LLSD.FromBoolean(false));
case 'i':
{
if (notationData.Length < 2)
{
endPos = notationData.Length;
return(LLSD.FromInteger(0));
}
int value;
endPos = FindEnd(notationData, 1);
if (Helpers.TryParse(notationData.Substring(1, endPos - 1), out value))
{
return(LLSD.FromInteger(value));
}
else
{
return(LLSD.FromInteger(0));
}
}
case 'r':
{
if (notationData.Length < 2)
{
endPos = notationData.Length;
return(LLSD.FromReal(0d));
}
double value;
endPos = FindEnd(notationData, 1);
if (Helpers.TryParse(notationData.Substring(1, endPos - 1), out value))
{
return(LLSD.FromReal(value));
}
else
{
return(LLSD.FromReal(0d));
}
}
case 'u':
{
if (notationData.Length < 17)
{
endPos = notationData.Length;
return(LLSD.FromUUID(LLUUID.Zero));
}
LLUUID value;
endPos = FindEnd(notationData, 1);
if (Helpers.TryParse(notationData.Substring(1, endPos - 1), out value))
{
return(LLSD.FromUUID(value));
}
else
{
return(LLSD.FromUUID(LLUUID.Zero));
}
}
case 'b':
throw new NotImplementedException("Notation binary type is unimplemented");
case 's':
case '"':
case '\'':
if (notationData.Length < 2)
{
endPos = notationData.Length;
return(LLSD.FromString(String.Empty));
}
endPos = FindEnd(notationData, 1);
return(LLSD.FromString(notationData.Substring(1, endPos - 1).Trim(new char[] { '"', '\'' })));
case 'l':
throw new NotImplementedException("Notation URI type is unimplemented");
case 'd':
throw new NotImplementedException("Notation date type is unimplemented");
case '[':
{
if (notationData.IndexOf(']') == -1)
{
throw new LLSDException("Invalid notation array");
}
int pos = 0;
LLSDArray array = new LLSDArray();
while (notationData[pos] != ']')
{
++pos;
// Advance past comma if need be
if (notationData[pos] == ',')
{
++pos;
}
// Allow a single whitespace character
if (pos < notationData.Length && notationData[pos] == ' ')
{
++pos;
}
int end;
array.Add(ParseNotationElement(notationData.Substring(pos), out end));
pos += end;
}
endPos = pos + 1;
return(array);
}
case '{':
{
if (notationData.IndexOf('}') == -1)
{
throw new LLSDException("Invalid notation map");
}
int pos = 0;
LLSDMap hashtable = new LLSDMap();
while (notationData[pos] != '}')
{
++pos;
// Advance past comma if need be
if (notationData[pos] == ',')
{
++pos;
}
// Allow a single whitespace character
if (pos < notationData.Length && notationData[pos] == ' ')
{
++pos;
}
if (notationData[pos] != '\'')
{
throw new LLSDException("Expected a map key");
}
int endquote = notationData.IndexOf('\'', pos + 1);
if (endquote == -1 || (endquote + 1) >= notationData.Length || notationData[endquote + 1] != ':')
{
throw new LLSDException("Invalid map format");
}
string key = notationData.Substring(pos, endquote - pos);
key = key.Trim(new char[] { '"', '\'' }); //key.Replace("'", String.Empty);
pos += (endquote - pos) + 2;
int end;
hashtable[key] = ParseNotationElement(notationData.Substring(pos), out end);
pos += end;
}
endPos = pos + 1;
return(hashtable);
}
default:
throw new LLSDException("Unknown notation value type");
}
}
/// <summary>
///
/// </summary>
/// <param name="reader"></param>
/// <returns></returns>
private static LLSD DeserializeNotationElement(StringReader reader)
{
int character = ReadAndSkipWhitespace(reader);
if (character < 0)
{
return(new LLSD()); // server returned an empty file, so we're going to pass along a null LLSD object
}
LLSD llsd;
int matching;
switch ((char)character)
{
case undefNotationValue:
llsd = new LLSD();
break;
case trueNotationValueOne:
llsd = LLSD.FromBoolean(true);
break;
case trueNotationValueTwo:
matching = BufferCharactersEqual(reader, trueNotationValueTwoFull, 1);
if (matching > 1 && matching < trueNotationValueTwoFull.Length)
{
throw new LLSDException("Notation LLSD parsing: True value parsing error:");
}
llsd = LLSD.FromBoolean(true);
break;
case trueNotationValueThree:
matching = BufferCharactersEqual(reader, trueNotationValueThreeFull, 1);
if (matching > 1 && matching < trueNotationValueThreeFull.Length)
{
throw new LLSDException("Notation LLSD parsing: True value parsing error:");
}
llsd = LLSD.FromBoolean(true);
break;
case falseNotationValueOne:
llsd = LLSD.FromBoolean(false);
break;
case falseNotationValueTwo:
matching = BufferCharactersEqual(reader, falseNotationValueTwoFull, 1);
if (matching > 1 && matching < falseNotationValueTwoFull.Length)
{
throw new LLSDException("Notation LLSD parsing: True value parsing error:");
}
llsd = LLSD.FromBoolean(false);
break;
case falseNotationValueThree:
matching = BufferCharactersEqual(reader, falseNotationValueThreeFull, 1);
if (matching > 1 && matching < falseNotationValueThreeFull.Length)
{
throw new LLSDException("Notation LLSD parsing: True value parsing error:");
}
llsd = LLSD.FromBoolean(false);
break;
case integerNotationMarker:
llsd = DeserializeNotationInteger(reader);
break;
case realNotationMarker:
llsd = DeserializeNotationReal(reader);
break;
case uuidNotationMarker:
char[] uuidBuf = new char[36];
if (reader.Read(uuidBuf, 0, 36) < 36)
{
throw new LLSDException("Notation LLSD parsing: Unexpected end of stream in UUID.");
}
LLUUID lluuid;
if (!LLUUID.TryParse(new String(uuidBuf), out lluuid))
{
throw new LLSDException("Notation LLSD parsing: Invalid UUID discovered.");
}
llsd = LLSD.FromUUID(lluuid);
break;
case binaryNotationMarker:
byte[] bytes = new byte[0];
int bChar = reader.Peek();
if (bChar < 0)
{
throw new LLSDException("Notation LLSD parsing: Unexpected end of stream in binary.");
}
if ((char)bChar == sizeBeginNotationMarker)
{
throw new LLSDException("Notation LLSD parsing: Raw binary encoding not supported.");
}
else if (Char.IsDigit((char)bChar))
{
char[] charsBaseEncoding = new char[2];
if (reader.Read(charsBaseEncoding, 0, 2) < 2)
{
throw new LLSDException("Notation LLSD parsing: Unexpected end of stream in binary.");
}
int baseEncoding;
if (!Int32.TryParse(new String(charsBaseEncoding), out baseEncoding))
{
throw new LLSDException("Notation LLSD parsing: Invalid binary encoding base.");
}
if (baseEncoding == 64)
{
if (reader.Read() < 0)
{
throw new LLSDException("Notation LLSD parsing: Unexpected end of stream in binary.");
}
string bytes64 = GetStringDelimitedBy(reader, doubleQuotesNotationMarker);
bytes = Convert.FromBase64String(bytes64);
}
else
{
throw new LLSDException("Notation LLSD parsing: Encoding base" + baseEncoding + " + not supported.");
}
}
llsd = LLSD.FromBinary(bytes);
break;
case stringNotationMarker:
int numChars = GetLengthInBrackets(reader);
if (reader.Read() < 0)
{
throw new LLSDException("Notation LLSD parsing: Unexpected end of stream in string.");
}
char[] chars = new char[numChars];
if (reader.Read(chars, 0, numChars) < numChars)
{
throw new LLSDException("Notation LLSD parsing: Unexpected end of stream in string.");
}
if (reader.Read() < 0)
{
throw new LLSDException("Notation LLSD parsing: Unexpected end of stream in string.");
}
llsd = LLSD.FromString(new String(chars));
break;
case singleQuotesNotationMarker:
string sOne = GetStringDelimitedBy(reader, singleQuotesNotationMarker);
llsd = LLSD.FromString(sOne);
break;
case doubleQuotesNotationMarker:
string sTwo = GetStringDelimitedBy(reader, doubleQuotesNotationMarker);
llsd = LLSD.FromString(sTwo);
break;
case uriNotationMarker:
if (reader.Read() < 0)
{
throw new LLSDException("Notation LLSD parsing: Unexpected end of stream in string.");
}
string sUri = GetStringDelimitedBy(reader, doubleQuotesNotationMarker);
Uri uri;
try
{
uri = new Uri(sUri, UriKind.RelativeOrAbsolute);
}
catch
{
throw new LLSDException("Notation LLSD parsing: Invalid Uri format detected.");
}
llsd = LLSD.FromUri(uri);
break;
case dateNotationMarker:
if (reader.Read() < 0)
{
throw new LLSDException("Notation LLSD parsing: Unexpected end of stream in date.");
}
string date = GetStringDelimitedBy(reader, doubleQuotesNotationMarker);
DateTime dt;
if (!Helpers.TryParse(date, out dt))
{
throw new LLSDException("Notation LLSD parsing: Invalid date discovered.");
}
llsd = LLSD.FromDate(dt);
break;
case arrayBeginNotationMarker:
llsd = DeserializeNotationArray(reader);
break;
case mapBeginNotationMarker:
llsd = DeserializeNotationMap(reader);
break;
default:
throw new LLSDException("Notation LLSD parsing: Unknown type marker '" + (char)character + "'.");
}
return(llsd);
}
private static LLSD ParseXmlElement(XmlTextReader reader)
{
SkipWhitespace(reader);
if (reader.NodeType != XmlNodeType.Element)
{
throw new LLSDException("Expected an element");
}
string type = reader.LocalName;
LLSD ret;
switch (type)
{
case "undef":
if (reader.IsEmptyElement)
{
reader.Read();
return(new LLSD());
}
reader.Read();
SkipWhitespace(reader);
ret = new LLSD();
break;
case "boolean":
if (reader.IsEmptyElement)
{
reader.Read();
return(LLSD.FromBoolean(false));
}
if (reader.Read())
{
string s = reader.ReadString().Trim();
if (!String.IsNullOrEmpty(s) && (s == "true" || s == "1"))
{
ret = LLSD.FromBoolean(true);
break;
}
}
ret = LLSD.FromBoolean(false);
break;
case "integer":
if (reader.IsEmptyElement)
{
reader.Read();
return(LLSD.FromInteger(0));
}
if (reader.Read())
{
int value = 0;
Helpers.TryParse(reader.ReadString().Trim(), out value);
ret = LLSD.FromInteger(value);
break;
}
ret = LLSD.FromInteger(0);
break;
case "real":
if (reader.IsEmptyElement)
{
reader.Read();
return(LLSD.FromReal(0d));
}
if (reader.Read())
{
double value = 0d;
string str = reader.ReadString().Trim().ToLower();
if (str == "nan")
{
value = Double.NaN;
}
else
{
Helpers.TryParse(str, out value);
}
ret = LLSD.FromReal(value);
break;
}
ret = LLSD.FromReal(0d);
break;
case "uuid":
if (reader.IsEmptyElement)
{
reader.Read();
return(LLSD.FromUUID(LLUUID.Zero));
}
if (reader.Read())
{
LLUUID value = LLUUID.Zero;
LLUUID.TryParse(reader.ReadString().Trim(), out value);
ret = LLSD.FromUUID(value);
break;
}
ret = LLSD.FromUUID(LLUUID.Zero);
break;
case "date":
if (reader.IsEmptyElement)
{
reader.Read();
return(LLSD.FromDate(Helpers.Epoch));
}
if (reader.Read())
{
DateTime value = Helpers.Epoch;
Helpers.TryParse(reader.ReadString().Trim(), out value);
ret = LLSD.FromDate(value);
break;
}
ret = LLSD.FromDate(Helpers.Epoch);
break;
case "string":
if (reader.IsEmptyElement)
{
reader.Read();
return(LLSD.FromString(String.Empty));
}
if (reader.Read())
{
ret = LLSD.FromString(reader.ReadString());
break;
}
ret = LLSD.FromString(String.Empty);
break;
case "binary":
if (reader.IsEmptyElement)
{
reader.Read();
return(LLSD.FromBinary(new byte[0]));
}
if (reader.GetAttribute("encoding") != null && reader.GetAttribute("encoding") != "base64")
{
throw new LLSDException("Unsupported binary encoding: " + reader.GetAttribute("encoding"));
}
if (reader.Read())
{
try
{
ret = LLSD.FromBinary(Convert.FromBase64String(reader.ReadString().Trim()));
break;
}
catch (FormatException ex)
{
throw new LLSDException("Binary decoding exception: " + ex.Message);
}
}
ret = LLSD.FromBinary(new byte[0]);
break;
case "uri":
if (reader.IsEmptyElement)
{
reader.Read();
return(LLSD.FromUri(new Uri(String.Empty, UriKind.RelativeOrAbsolute)));
}
if (reader.Read())
{
ret = LLSD.FromUri(new Uri(reader.ReadString(), UriKind.RelativeOrAbsolute));
break;
}
ret = LLSD.FromUri(new Uri(String.Empty, UriKind.RelativeOrAbsolute));
break;
case "map":
return(ParseXmlMap(reader));
case "array":
return(ParseXmlArray(reader));
default:
reader.Read();
ret = null;
break;
}
if (reader.NodeType != XmlNodeType.EndElement || reader.LocalName != type)
{
throw new LLSDException("Expected </" + type + ">");
}
else
{
reader.Read();
return(ret);
}
}
private static LLSD ParseBinaryElement(MemoryStream stream)
{
SkipWhiteSpace(stream);
LLSD llsd;
int marker = stream.ReadByte();
if (marker < 0)
{
throw new LLSDException("Binary LLSD parsing:Unexpected end of stream.");
}
switch ((byte)marker)
{
case undefBinaryValue:
llsd = new LLSD();
break;
case trueBinaryValue:
llsd = LLSD.FromBoolean(true);
break;
case falseBinaryValue:
llsd = LLSD.FromBoolean(false);
break;
case integerBinaryMarker:
int integer = NetworkToHostInt(ConsumeBytes(stream, int32Length));
llsd = LLSD.FromInteger(integer);
break;
case realBinaryMarker:
double dbl = NetworkToHostDouble(ConsumeBytes(stream, doubleLength));
llsd = LLSD.FromReal(dbl);
break;
case uuidBinaryMarker:
llsd = LLSD.FromUUID(new LLUUID(ConsumeBytes(stream, 16), 0));
break;
case binaryBinaryMarker:
int binaryLength = NetworkToHostInt(ConsumeBytes(stream, int32Length));
llsd = LLSD.FromBinary(ConsumeBytes(stream, binaryLength));
break;
case stringBinaryMarker:
int stringLength = NetworkToHostInt(ConsumeBytes(stream, int32Length));
string ss = Encoding.UTF8.GetString(ConsumeBytes(stream, stringLength));
llsd = LLSD.FromString(ss);
break;
case uriBinaryMarker:
int uriLength = NetworkToHostInt(ConsumeBytes(stream, int32Length));
string sUri = Encoding.UTF8.GetString(ConsumeBytes(stream, uriLength));
Uri uri;
try
{
uri = new Uri(sUri, UriKind.RelativeOrAbsolute);
}
catch
{
throw new LLSDException("Binary LLSD parsing: Invalid Uri format detected.");
}
llsd = LLSD.FromUri(uri);
break;
case dateBinaryMarker:
double timestamp = NetworkToHostDouble(ConsumeBytes(stream, doubleLength));
DateTime dateTime = DateTime.SpecifyKind(Helpers.Epoch, DateTimeKind.Utc);
dateTime = dateTime.AddSeconds(timestamp);
llsd = LLSD.FromDate(dateTime.ToLocalTime());
break;
case arrayBeginBinaryMarker:
llsd = ParseBinaryArray(stream);
break;
case mapBeginBinaryMarker:
llsd = ParseBinaryMap(stream);
break;
default:
throw new LLSDException("Binary LLSD parsing: Unknown type marker.");
}
return(llsd);
}