private OSMRelation ParseRelationData(
byte[] data
#if DEBUG
, ElementDebugInfos debugInfos
#endif
)
{
var bufferOffset = 0;
#if DEBUG
var idPosition = (uint)bufferOffset + 1;
#endif
var relationId = VarInt.ParseInt64(data, ref bufferOffset) + this._lastRelationId;
#if DEBUG
debugInfos.Add(idPosition, "start of 'id' (" + relationId + ").");
#endif
var o5mRelation = new OSMRelation((ulong)relationId);
this._lastRelationId = (long)o5mRelation.Id;
#if DEBUG
this.ParseVersionData(data, o5mRelation, ref bufferOffset, debugInfos);
#else
this.ParseVersionData(data, o5mRelation, ref bufferOffset);
#endif
if (data[bufferOffset] > 0)
{
KeyValuePair <byte[], byte[]>?typeAndRole;
#if DEBUG
var referenceLengthPosition = (uint)bufferOffset + 1;
#endif
var referenceLength = VarInt.ParseUInt64(data, ref bufferOffset);
#if DEBUG
debugInfos.Add(referenceLengthPosition, "start of 'length of reference section' (" + referenceLength + ").");
#endif
var startOffset = bufferOffset;
var bytesUnread = referenceLength;
while (bytesUnread > 0)
{
#if DEBUG
var referenceIdPosition = (uint)bufferOffset + 1;
#endif
var currentReferenceId = VarInt.ParseInt64(data, ref bufferOffset) + this._lastReferenceId;
#if DEBUG
debugInfos.Add(referenceIdPosition, "start of 'reference-id' (" + currentReferenceId + ").");
#endif
this._lastReferenceId = currentReferenceId;
if (data[bufferOffset] == 0)
{
#if DEBUG
debugInfos.Add((uint)bufferOffset + 1, "start of 'type/role'-pair (raw).");
#endif
typeAndRole = StringPair.ParseToTypeRoleByteArray(data, ref bufferOffset);
if (typeAndRole.HasValue)
{
var typeAndRoleValue = typeAndRole.Value;
if (typeAndRoleValue.Key.Length + typeAndRoleValue.Value.Length <= 250)
{
this._storedStringPairs.Insert(0, typeAndRoleValue);
}
}
}
else
{
#if DEBUG
var typeRolePosition = (uint)bufferOffset + 1;
#endif
var storedPosition = VarInt.ParseUInt32(data, ref bufferOffset);
#if DEBUG
debugInfos.Add(typeRolePosition, "start of stored 'type/role'-pair (" + storedPosition + ").");
#endif
typeAndRole = this._storedStringPairs[(int)storedPosition - 1];
}
if (typeAndRole?.Key.Length > 0)
{
var typeValue = (MemberType)(typeAndRole.Value.Key[0] - 0x30);
var roleValue = Encoding.UTF8.GetString(typeAndRole.Value.Value);
o5mRelation.Members.Add(new OSMMember(typeValue, (ulong)currentReferenceId, roleValue));
}
bytesUnread = referenceLength - ((ulong)bufferOffset - (ulong)startOffset);
}
}
#if DEBUG
this.ParseTagsData(data, o5mRelation, ref bufferOffset, debugInfos);
#else
this.ParseTagsData(data, o5mRelation, ref bufferOffset);
#endif
return(o5mRelation);
}
