public void Parse(Stream hs)
{
PackPos = hs.ReadDecodedUInt64();
NumPackStreams = hs.ReadDecodedUInt64();
Sizes = new UInt64[NumPackStreams];
Digests = new Digests(NumPackStreams);
while (true)
{
PropertyID propertyID = GetPropertyID(this, hs);
switch (propertyID)
{
case PropertyID.kSize:
for (ulong i = 0; i < NumPackStreams; ++i)
{
Sizes[i] = hs.ReadDecodedUInt64();
}
break;
case PropertyID.kCRC:
Digests.Parse(hs);
break;
case PropertyID.kEnd:
return;
default:
throw new NotImplementedException(propertyID.ToString());
}
}
}
public void Parse(Stream hs)
{
PropertyID propertyID = GetPropertyID(this, hs);
// Number of UnPack Streams per Folder
if (propertyID == PropertyID.kNumUnPackStream)
{
NumUnPackStreamsInFolders = new UInt64[unPackInfo.NumFolders];
NumUnPackStreamsTotal = 0;
for (ulong i = 0; i < unPackInfo.NumFolders; ++i)
{
NumUnPackStreamsTotal += NumUnPackStreamsInFolders[i] = hs.ReadDecodedUInt64();
}
propertyID = GetPropertyID(this, hs);
}
else // If no records, assume `1` output stream per folder
{
NumUnPackStreamsInFolders = Enumerable.Repeat((UInt64)1, (int)unPackInfo.NumFolders).ToArray();
NumUnPackStreamsTotal = unPackInfo.NumFolders;
}
// UnPackSizes
UnPackSizes = new List <UInt64>();
if (propertyID == PropertyID.kSize)
{
for (ulong i = 0; i < unPackInfo.NumFolders; ++i)
{
UInt64 num = NumUnPackStreamsInFolders[i];
if (num == 0)
{
continue;
}
UInt64 sum = 0;
for (ulong j = 1; j < num; ++j)
{
UInt64 size = hs.ReadDecodedUInt64();
sum += size;
UnPackSizes.Add(size);
}
UnPackSizes.Add(unPackInfo.Folders[i].GetUnPackSize() - sum);
}
propertyID = GetPropertyID(this, hs);
}
else // If no records, assume one unpack size per folder
{
for (ulong i = 0; i < unPackInfo.NumFolders; ++i)
{
ulong num = NumUnPackStreamsInFolders[i];
if (num > 1)
{
throw new SevenZipException($"Invalid number of UnPackStreams `{num}` in Folder # `{i}`.");
}
if (num == 1)
{
UnPackSizes.Add(unPackInfo.Folders[i].GetUnPackSize());
}
}
}
// Digests [Number of Unknown CRCs]
UInt64 numDigests = 0;
for (UInt64 i = 0; i < unPackInfo.NumFolders; ++i)
{
UInt64 numSubStreams = NumUnPackStreamsInFolders[i];
if (numSubStreams > 1 || unPackInfo.Folders[i].UnPackCRC == null)
{
numDigests += numSubStreams;
}
}
if (propertyID == PropertyID.kCRC)
{
Digests = new Digests(numDigests);
Digests.Parse(hs);
propertyID = GetPropertyID(this, hs);
}
if (propertyID != PropertyID.kEnd)
{
throw new SevenZipException("Expected `kEnd` property ID.");
}
}
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.");
}
}
