private static void CopyOverHeader(RecordLocatorResults fileLocs, IMutagenReadStream inputStream, BinaryWriter writer)
{
long noRecordLength;
if (fileLocs.GrupLocations.TryGetInDirection(
inputStream.Position,
higher: true,
result: out var nextRec))
{
noRecordLength = nextRec.Value.Location.Min - inputStream.Position;
}
else
{
noRecordLength = inputStream.Remaining;
}
inputStream.WriteTo(writer.BaseStream, (int)noRecordLength);
}
private static void AlignGroupsByRules(
MutagenBinaryReadStream inputStream,
MutagenWriter writer,
AlignmentRules alignmentRules,
RecordLocatorResults fileLocs)
{
while (!inputStream.Complete)
{
// Import until next listed major record
long noRecordLength;
if (fileLocs.GrupLocations.TryGetInDirection(
inputStream.Position,
higher: true,
result: out var nextRec))
{
noRecordLength = nextRec.Value.Location.Min - inputStream.Position;
}
else
{
noRecordLength = inputStream.Remaining;
}
inputStream.WriteTo(writer.BaseStream, (int)noRecordLength);
// If complete overall, return
if (inputStream.Complete)
{
break;
}
var groupMeta = inputStream.GetGroup();
if (!groupMeta.IsGroup)
{
throw new ArgumentException();
}
writer.Write(inputStream.ReadSpan(groupMeta.HeaderLength));
if (!alignmentRules.GroupAlignment.TryGetValue(groupMeta.GroupType, out var groupRules))
{
continue;
}
var storage = new Dictionary <RecordType, List <ReadOnlyMemorySlice <byte> > >();
var rest = new List <ReadOnlyMemorySlice <byte> >();
using (var frame = MutagenFrame.ByLength(inputStream, groupMeta.ContentLength))
{
while (!frame.Complete)
{
var majorMeta = inputStream.GetMajorRecord();
var bytes = inputStream.ReadMemory(checked ((int)majorMeta.TotalLength));
var type = majorMeta.RecordType;
if (groupRules.Contains(type))
{
storage.GetOrAdd(type).Add(bytes);
}
else
{
rest.Add(bytes);
}
}
}
foreach (var rule in groupRules)
{
if (storage.TryGetValue(rule, out var storageBytes))
{
foreach (var item in storageBytes)
{
writer.Write(item);
}
}
}
foreach (var item in rest)
{
writer.Write(item);
}
}
}
private static void AlignMajorRecordsByRules(
IMutagenReadStream inputStream,
MutagenWriter writer,
AlignmentRules alignmentRules,
RecordLocatorResults fileLocs)
{
while (!inputStream.Complete)
{
// Import until next listed major record
long noRecordLength;
if (fileLocs.ListedRecords.TryGetInDirection(
inputStream.Position,
higher: true,
result: out var nextRec))
{
var recordLocation = fileLocs.ListedRecords.Keys[nextRec.Key];
noRecordLength = recordLocation - inputStream.Position;
}
else
{
noRecordLength = inputStream.Remaining;
}
inputStream.WriteTo(writer.BaseStream, (int)noRecordLength);
// If complete overall, return
if (inputStream.Complete)
{
break;
}
var recType = HeaderTranslation.ReadNextRecordType(
inputStream,
out var len);
if (!alignmentRules.StopMarkers.TryGetValue(recType, out var stopMarkers))
{
stopMarkers = null;
}
writer.Write(recType.TypeInt);
writer.Write(len);
if (!alignmentRules.Alignments.TryGetValue(recType, out var alignments))
{
inputStream.WriteTo(writer.BaseStream, inputStream.MetaData.Constants.MajorConstants.LengthAfterLength + len);
continue;
}
inputStream.WriteTo(writer.BaseStream, inputStream.MetaData.Constants.MajorConstants.LengthAfterLength);
var writerEndPos = writer.Position + len;
var endPos = inputStream.Position + len;
var dataDict = new Dictionary <RecordType, ReadOnlyMemorySlice <byte> >();
ReadOnlyMemorySlice <byte>?rest = null;
while (inputStream.Position < endPos)
{
var subType = HeaderTranslation.GetNextSubrecordType(
inputStream,
out var _);
if (stopMarkers?.Contains(subType) ?? false)
{
rest = inputStream.ReadMemory((int)(endPos - inputStream.Position), readSafe: true);
break;
}
if (!alignments.TryGetValue(subType, out var rule))
{
throw new ArgumentException($"Encountered an unknown record: {subType}");
}
dataDict.Add(subType, rule.GetBytes(inputStream));
}
foreach (var alignment in alignmentRules.Alignments[recType])
{
if (dataDict.TryGetValue(
alignment.Key,
out var data))
{
writer.Write(data);
dataDict.Remove(alignment.Key);
}
}
if (dataDict.Count > 0)
{
throw new ArgumentException($"Encountered an unknown record: {dataDict.First().Key}");
}
if (rest != null)
{
writer.Write(rest.Value);
}
if (writer.Position != writerEndPos)
{
throw new ArgumentException("Record alignment changed length");
}
}
}
