public async Task <IReplayHeader> ReadReplayAsync(FileStream fileStream)
{
if (!fileStream.CanRead)
{
throw new IOException($"{exceptionOriginName} - Stream does not support reading");
}
// Read and check Magic Numbers
ReplayType type;
try
{
type = await ParserHelpers.GetReplayTypeAsync(fileStream);
}
catch (Exception ex)
{
throw new IOException($"{exceptionOriginName} - Reading Magic Number: " + ex.Message, ex);
}
if (type != ReplayType.ROFL)
{
throw new Exception($"{exceptionOriginName} - Selected file is not in valid ROFL format");
}
// Read and deserialize length fields
byte[] lengthFieldBuffer;
try
{
lengthFieldBuffer = await ParserHelpers.ReadBytesAsync(fileStream, 26, 262, SeekOrigin.Begin);
}
catch (Exception ex)
{
throw new IOException($"{exceptionOriginName} - Reading Length Header: " + ex.Message, ex);
}
LengthFields lengthFields;
try
{
lengthFields = ParseLengthFields(lengthFieldBuffer);
}
catch (Exception ex)
{
throw new Exception($"{exceptionOriginName} - Parsing Length Header: " + ex.Message, ex);
}
// Read and deserialize metadata
byte[] metadataBuffer;
try
{
metadataBuffer = await ParserHelpers.ReadBytesAsync(fileStream, (int)lengthFields.MetadataLength, (int)lengthFields.MetadataOffset, SeekOrigin.Begin);
}
catch (Exception ex)
{
throw new IOException($"{exceptionOriginName} - Reading JSON Metadata: " + ex.Message, ex);
}
MatchMetadata metadataFields;
try
{
metadataFields = ParseMetadata(metadataBuffer);
}
catch (Exception ex)
{
throw new Exception($"{exceptionOriginName} - Parsing Metadata Header: " + ex.Message, ex);
}
// Read and deserialize payload fields
byte[] payloadBuffer;
try
{
payloadBuffer = await ParserHelpers.ReadBytesAsync(fileStream, (int)lengthFields.PayloadHeaderLength, (int)lengthFields.PayloadHeaderOffset, SeekOrigin.Begin);
}
catch (Exception ex)
{
throw new IOException($"{exceptionOriginName} - Reading Match Header: " + ex.Message, ex);
}
PayloadFields payloadFields;
try
{
payloadFields = ParsePayloadHeader(payloadBuffer);
}
catch (Exception ex)
{
throw new Exception($"{exceptionOriginName} - Parsing Payload Header: " + ex.Message, ex);
}
// Combine objects to create header
ROFLHeader result = new ROFLHeader
{
LengthFields = lengthFields,
MatchMetadata = metadataFields,
PayloadFields = payloadFields
};
// Create json of entire contents
string jsonString = JsonConvert.SerializeObject(result);
// throw it back on the object and return
result.RawJsonString = jsonString;
return(result);
}
public async Task <ReplayFile> ReadFile(string filePath)
{
// Make sure file exists
if (String.IsNullOrEmpty(filePath))
{
_log.Error("File reference is null");
throw new ArgumentNullException($"File reference is null");
}
if (!File.Exists(filePath))
{
_log.Error("File path not found, does the file exist?");
throw new FileNotFoundException($"File path not found, does the file exist?");
}
// Reads the first 4 bytes and tries to find out the replay type
ReplayType type = await ParserHelpers.GetReplayTypeAsync(filePath);
// Match parsers to file types
ReplayFile result;
switch (type)
{
case ReplayType.ROFL: // Official Replays
result = await ReadROFL(filePath);
break;
//case ReplayType.LRF: // LOLReplay
// file.Type = ReplayType.LRF;
// file.Data = await ReadLRF(file.Location);
// break;
//case ReplayType.LPR: // BaronReplays
// file.Type = ReplayType.LPR;
// file.Data = null;
// break;
default:
_log.Error($"File {filePath} is not an accepted format: rofl");
return(null);
}
// Make some educated guesses
GameDetailsInferrer detailsInferrer = new GameDetailsInferrer();
result.Players = result.BluePlayers.Union(result.RedPlayers).ToArray();
try
{
result.MapId = detailsInferrer.InferMap(result.Players);
}
catch (ArgumentNullException ex)
{
_log.Warning("Could not infer map type\n" + ex.ToString());
result.MapId = MapCode.Unknown;
}
result.MapName = detailsInferrer.GetMapName(result.MapId);
result.IsBlueVictorious = detailsInferrer.InferBlueVictory(result.BluePlayers, result.RedPlayers);
foreach (var player in result.Players)
{
player.Id = $"{result.MatchId}_{player.PlayerID}";
}
// Set the alternate name to the default
result.AlternativeName = result.Name;
return(result);
}