private void ParseTagsData( byte[] data, OSMElement element, ref int bufferOffset #if DEBUG , ElementDebugInfos debugInfos #endif ) { var unreadBytes = data.Length - bufferOffset; while (unreadBytes > 0) { if (data[bufferOffset] != 0) { #if DEBUG var keyValuePosition = (uint)bufferOffset + 1; #endif var storedPosition = VarInt.ParseUInt32(data, ref bufferOffset); #if DEBUG debugInfos.Add(keyValuePosition, "start of stored 'key/value'-pair (" + storedPosition + ")."); #endif var tag = this._storedStringPairs[(int)storedPosition - 1]; element.Tags.Add(Encoding.UTF8.GetString(tag.Key), Encoding.UTF8.GetString(tag.Value)); } else { #if DEBUG var keyValuePosition = (uint)bufferOffset + 1; #endif var tag = StringPair.ParseToByteArrayPair(data, ref bufferOffset); #if DEBUG debugInfos.Add(keyValuePosition, "start of raw 'key/value'-pair."); #endif if (tag.HasValue) { var tagValue = tag.Value; element.Tags.Add(Encoding.UTF8.GetString(tagValue.Key), Encoding.UTF8.GetString(tagValue.Value)); if (tagValue.Key.Length + tagValue.Value.Length <= 250) { this._storedStringPairs.Insert(0, tagValue); } } } unreadBytes = data.Length - bufferOffset; } }
private void ParseVersionData( byte[] data, OSMElement element, ref int bufferOffset #if DEBUG , ElementDebugInfos debugInfos #endif ) { #if DEBUG var versionPosition = (uint)bufferOffset + 1; #endif element.Version = VarInt.ParseUInt64(data, ref bufferOffset); #if DEBUG debugInfos.Add(versionPosition, "start of 'version' (" + element.Version + ")."); #endif if (element.Version == 0) { return; } #if DEBUG var timestampOffset = (uint)bufferOffset + 1; #endif var timestampDiff = VarInt.ParseInt64(data, ref bufferOffset); #if DEBUG debugInfos.Add(timestampOffset, "start of 'timestamp' (diff: " + timestampDiff + ")."); #endif var unixTimestamp = timestampDiff + this._lastTimestamp; this._lastTimestamp = unixTimestamp; element.Timestamp = UNIX_START.AddSeconds(unixTimestamp); if (unixTimestamp == 0) { return; } #if DEBUG var changesetPosition = (uint)bufferOffset + 1; #endif element.Changeset = (ulong)(VarInt.ParseInt64(data, ref bufferOffset) + this._lastChangeset); #if DEBUG debugInfos.Add(changesetPosition, "start of 'changeset' (" + element.Changeset + ")."); #endif this._lastChangeset = (long)element.Changeset; KeyValuePair <byte[], byte[]>?keyValuePair; if (data[bufferOffset] == 0) { #if DEBUG debugInfos.Add((uint)bufferOffset + 1, "start of 'uid/user'-pair (raw)."); #endif keyValuePair = StringPair.ParseToByteArrayPair(data, ref bufferOffset); if (keyValuePair.HasValue) { var keyValuePairValue = keyValuePair.Value; element.UserId = VarInt.ParseUInt64(keyValuePairValue.Key); element.UserName = Encoding.UTF8.GetString(keyValuePairValue.Value); if (element.UserId != 0) { if (keyValuePairValue.Key.Length + keyValuePairValue.Value.Length <= 250) { this._storedStringPairs.Insert(0, keyValuePairValue); } } } else { this._storedStringPairs.Insert(0, new KeyValuePair <byte[], byte[]>(new byte[0], new byte[0])); } } else { #if DEBUG debugInfos.Add((uint)bufferOffset + 1, "start of 'uid/user'-pair (stored)."); #endif var storedPosition = VarInt.ParseUInt32(data, ref bufferOffset); if (this._storedStringPairs.ElementExistsAtPosition((int)storedPosition)) { keyValuePair = this._storedStringPairs[(int)storedPosition - 1]; element.UserId = VarInt.ParseUInt64(keyValuePair?.Key); element.UserName = Encoding.UTF8.GetString(keyValuePair?.Value); } } }