public void Parse(Stream hs)
{
ExpectPropertyID(this, hs, PropertyID.kFolder);
// Folders
NumFolders = hs.ReadDecodedUInt64();
External = hs.ReadByteThrow();
switch (External)
{
case 0:
Folders = new Folder[NumFolders];
for (ulong i = 0; i < NumFolders; ++i)
{
Folders[i] = new Folder();
Folders[i].Parse(hs);
}
break;
case 1:
DataStreamsIndex = hs.ReadDecodedUInt64();
break;
default:
throw new SevenZipException("External value must be `0` or `1`.");
}
ExpectPropertyID(this, hs, PropertyID.kCodersUnPackSize);
// CodersUnPackSize (data stored in `Folder.UnPackSizes`)
for (ulong i = 0; i < NumFolders; ++i)
{
Folders[i].UnPackSizes = new UInt64[Folders[i].NumOutStreamsTotal];
for (ulong j = 0; j < Folders[i].NumOutStreamsTotal; ++j)
{
Folders[i].UnPackSizes[j] = hs.ReadDecodedUInt64();
}
}
// Optional: UnPackDigests (data stored in `Folder.UnPackCRC`)
PropertyID propertyID = GetPropertyID(this, hs);
var UnPackDigests = new Digests(NumFolders);
if (propertyID == PropertyID.kCRC)
{
UnPackDigests.Parse(hs);
propertyID = GetPropertyID(this, hs);
}
for (ulong i = 0; i < NumFolders; ++i)
{
if (UnPackDigests.Defined(i))
{
Folders[i].UnPackCRC = UnPackDigests.CRCs[i];
}
}
// end of UnPackInfo
if (propertyID != PropertyID.kEnd)
{
throw new SevenZipException("Expected kEnd property.");
}
}