public DateTime FromCBORObject(CBORObject obj)
{
if (obj.HasMostOuterTag(0))
{
try {
return(StringToDateTime(obj.AsString()));
} catch (OverflowException ex) {
throw new CBORException(ex.Message, ex);
} catch (ArgumentException ex) {
throw new CBORException(ex.Message, ex);
}
}
else if (obj.HasMostOuterTag(1))
{
if (!obj.IsNumber || !obj.AsNumber().IsFinite())
{
throw new CBORException("Not a finite number");
}
EDecimal dec;
dec = (EDecimal)obj.ToObject(typeof(EDecimal));
var lesserFields = new int[7];
var year = new EInteger[1];
CBORUtilities.BreakDownSecondsSinceEpoch(
dec,
year,
lesserFields);
return(PropertyMap.BuildUpDateTime(year[0], lesserFields));
}
throw new CBORException("Not tag 0 or 1");
}
private static CBORObject ValidateObject(CBORObject obj)
{
if (obj.Type != CBORType.TextString)
{
throw new CBORException("URI/IRI must be a text string");
}
bool isiri = obj.HasMostOuterTag(266);
bool isiriref = obj.HasMostOuterTag(267);
if (
isiriref && !URIUtility.IsValidIRI(
obj.AsString(),
URIUtility.ParseMode.IRIStrict))
{
throw new CBORException("String is not a valid IRI Reference");
}
if (
isiri && (!URIUtility.IsValidIRI(
obj.AsString(),
URIUtility.ParseMode.IRIStrict) ||
!URIUtility.HasScheme(obj.AsString())))
{
throw new CBORException("String is not a valid IRI");
}
if (!URIUtility.IsValidIRI(
obj.AsString(),
URIUtility.ParseMode.URIStrict) ||
!URIUtility.HasScheme(obj.AsString()))
{
throw new CBORException("String is not a valid URI");
}
return(obj);
}
private static CBORObject ResolveSharedRefs(
CBORObject obj,
SharedRefs sharedRefs)
{
if (obj == null)
{
return(null);
}
CBORType type = obj.Type;
bool hasTag = obj.HasMostOuterTag(29);
if (hasTag)
{
CBORObject untagged = obj.UntagOne();
if (untagged.IsTagged ||
untagged.Type != CBORType.Integer ||
untagged.AsNumber().IsNegative())
{
throw new CBORException(
"Shared ref index must be an untagged integer 0 or greater");
}
return(sharedRefs.GetObject(untagged.AsEIntegerValue()));
}
hasTag = obj.HasMostOuterTag(28);
if (hasTag)
{
obj = obj.UntagOne();
sharedRefs.AddObject(obj);
}
if (type == CBORType.Map)
{
foreach (CBORObject key in obj.Keys)
{
CBORObject value = obj[key];
CBORObject newvalue = ResolveSharedRefs(value, sharedRefs);
if (value != newvalue)
{
obj[key] = newvalue;
}
}
}
else if (type == CBORType.Array)
{
for (var i = 0; i < obj.Count; ++i)
{
obj[i] = ResolveSharedRefs(obj[i], sharedRefs);
}
}
return(obj);
}
public Uri FromCBORObject(CBORObject obj)
{
if (obj.HasMostOuterTag(32) ||
obj.HasMostOuterTag(266) ||
obj.HasMostOuterTag(267))
{
ValidateObject(obj);
try {
return(new Uri(obj.AsString()));
} catch (Exception ex) {
throw new CBORException(ex.Message, ex);
}
}
throw new CBORException();
}
public Guid FromCBORObject(CBORObject obj)
{
if (!obj.HasMostOuterTag(37))
{
throw new CBORException("Must have outermost tag 37");
}
ValidateObject(obj);
byte[] bytes = obj.GetByteString();
var guidChars = new char[36];
string hex = "0123456789abcdef";
var index = 0;
for (var i = 0; i < 16; ++i)
{
if (i == 4 || i == 6 || i == 8 || i == 10)
{
guidChars[index++] = '-';
}
guidChars[index++] = hex[(int)(bytes[i] >> 4) & 15];
guidChars[index++] = hex[(int)bytes[i] & 15];
}
string guidString = new String(guidChars);
return(new Guid(guidString));
}
