void szReadHashDigests(SzData sd, ulong numItems, out bool[]digestsDefined, out uint[] digests )
{
digestsDefined = szReadBoolVector2(sd, numItems);
digests = new uint[numItems];
for( ulong i = 0; i < numItems; i++)
{
if( digestsDefined[i] )
{
digests[i] = szReadUInt32( sd );
}
}
}
void szWaitAttribute(SzData sd, EIdEnum attribute)
{
while (true)
{
EIdEnum type = szReadID( sd );
// Console.WriteLine("WaitAttribute, found " + type);
if (type == attribute)
{
return;
}
if (type == EIdEnum.k7zIdEnd)
{
throw new Exception("szWaitAttribute: attribute " + attribute + " not found.");
}
szSkeepData(sd);
}
}
void SzReadHeader(
SzData sd,
ArchiveDatabaseEx db )
{
ulong[] unPackSizes;
bool[] digestsDefined;
uint[]digests;
bool[] emptyStreamVector;
bool[] emptyFileVector;
SzReadHeader2(sd, db,
out unPackSizes, out digestsDefined, out digests,
out emptyStreamVector, out emptyFileVector );
}
void szReadAndDecodePackedStreams(
FileStream inStream, SzData sd,
out byte[] outBuffer, ulong baseOffset)
{
ArchiveDatabase db = new ArchiveDatabase();
ulong[] unPackSizes;
bool[] digestsDefined;
uint[] digests;
SzReadAndDecodePackedStreams2(inStream, sd,
out outBuffer, baseOffset, db, out unPackSizes, out digestsDefined, out digests);
}
void szReadStreamsInfo(SzData sd, out ulong dataOffset,
ArchiveDatabase db,
out uint numUnPackStreams, out ulong[] unPackSizes,
out bool[]packCRCsDefined, out uint[] packCRCs)
{
//Console.WriteLine("szReadStreamsInfo >>>");
numUnPackStreams = 0;
unPackSizes = null;
packCRCsDefined = null;
packCRCs = null;
dataOffset = 0;
while (true)
{
EIdEnum type = szReadID(sd );
//Console.WriteLine( "ReadStreamsInfox, got type: " + type);
switch (type)
{
case EIdEnum.k7zIdEnd:
return;
case EIdEnum.k7zIdPackInfo:
//Console.WriteLine("calling szReadPackInfo...");
szReadPackInfo(sd, out dataOffset, out db.NumPackStreams,
out db.PackSizes, out db.PackCRCsDefined, out db.PackCRCs);
//Console.WriteLine("szReadStreamsInfo, crc info: ");
break;
case EIdEnum.k7zIdUnPackInfo:
szReadUnPackInfo(sd,out db.NumFolders, out db.Folders );
break;
case EIdEnum.k7zIdSubStreamsInfo:
szReadSubStreamsInfo(sd, db.Folders,
out numUnPackStreams, out unPackSizes, out packCRCsDefined, out packCRCs );
//RINOK(SzReadSubStreamsInfo(sd, db->NumFolders, db->Folders,
// numUnPackStreams, unPackSizes, digestsDefined, digests, allocTemp));
break;
default:
throw new Exception("Unexpected type in szReadStreamsInfo " + type);
}
}
//Console.WriteLine("szReadStreamsInfo <<<");
}
void SzReadHeader2(SzData sd, ArchiveDatabaseEx db,
out ulong[] unPackSizes, out bool[] digestsDefined, out uint[] digests,
out bool[] emptyStreamVector, out bool[] emptyFileVector)
{
// Console.WriteLine("SzReadHeader2 >>>");
EIdEnum type;
uint numUnPackStreams = 0;
uint numFiles = 0;
FileItem[] files = null;
uint numEmptyStreams = 0;
unPackSizes = null;
digestsDefined = null;
digests = null;
emptyStreamVector = null;
emptyFileVector = null;
type = szReadID(sd);
//Console.WriteLine("SzReadHeader2， got type: " + type);
if (type == EIdEnum.k7zIdArchiveProperties)
{
//SzReadArchiveProperties( sd );
throw new Exception("Need to write szReadArchiveProperties, please contact 7zip port developer");
//type = szReadID(sd);
}
if (type == EIdEnum.k7zIdMainStreamsInfo)
{
szReadStreamsInfo(sd, out db.ArchiveInfo.DataStartPosition,
db.Database, out numUnPackStreams,
out unPackSizes,
out digestsDefined, out digests);
db.ArchiveInfo.DataStartPosition += db.ArchiveInfo.StartPositionAfterHeader;
type = szReadID(sd);
}
if (type == EIdEnum.k7zIdEnd)
{
return;
}
if (type != EIdEnum.k7zIdFilesInfo)
{
throw new Exception("Error, unexpected type: " + type);
}
numFiles = szReadNumber32(sd);
//Console.WriteLine("SzReadHeader2 Number files: " + numFiles);
db.Database.NumFiles = numFiles;
files = new FileItem[numFiles];
//RINOK(MySzInAlloc((void **)&files, (size_t)numFiles * sizeof(CFileItem), allocMain->Alloc));
db.Database.Files = files;
for (uint i = 0; i < numFiles; i++)
{
db.Database.Files[i] = new FileItem();
// SzFileInit(files + i);
}
while (true)
{
ulong size;
type = szReadID(sd); // note to self: maybe need to read type as UInt64???
if (type == EIdEnum.k7zIdEnd)
{
break;
}
size = szReadNumber(sd);
if ((UInt64)((int)type) != (UInt64)type) // note to self: maybe need to read type as UInt64???
{
szSkeepDataSize(sd, size);
}
else
{
switch (type)
{
case EIdEnum.k7zIdName:
{
szReadSwitch(sd);
szReadFileNames(sd, numFiles, files);
//RINOK(SzReadFileNames(sd, numFiles, files, allocMain->Alloc))
break;
}
case EIdEnum.k7zIdEmptyStream:
{
emptyStreamVector = szReadBoolVector(sd, numFiles);
//RINOK(SzReadBoolVector(sd, numFiles, emptyStreamVector, allocTemp->Alloc));
numEmptyStreams = 0;
for (uint i = 0; i < numFiles; i++)
if (emptyStreamVector[i])
numEmptyStreams++;
break;
}
case EIdEnum.k7zIdEmptyFile:
{
emptyFileVector = szReadBoolVector(sd, numEmptyStreams);
//RINOK(SzReadBoolVector(sd, numEmptyStreams, emptyFileVector, allocTemp->Alloc));
break;
}
default:
{
szSkeepDataSize(sd, size);
// RINOK(SzSkeepDataSize(sd, size));
break;
}
}
}
uint emptyFileIndex = 0;
uint sizeIndex = 0;
for (uint i = 0; i < numFiles; i++)
{
FileItem file = files[i];
file.IsAnti = false;
if (emptyStreamVector == null)
{
file.HasStream = true;
}
else
{
file.HasStream = !emptyStreamVector[i];
//file.HasStream = (Byte)((*emptyStreamVector)[i] ? 0 : 1);
}
if (file.HasStream)
{
file.IsDirectory = false;
file.Size = unPackSizes[sizeIndex];
file.FileCRC = digests[sizeIndex];
file.IsFileCRCDefined = digestsDefined[sizeIndex];
sizeIndex++;
}
else
{
if (emptyFileVector == null)
{
file.IsDirectory = true;
}
else
{
file.IsDirectory = !emptyFileVector[emptyFileIndex];
//file.IsDirectory = (Byte)((*emptyFileVector)[emptyFileIndex] ? false : true);
}
emptyFileIndex++;
file.Size = 0;
file.IsFileCRCDefined = false;
}
}
}
db.Fill();
//foreach (FileItem file in files)
//{
// Console.WriteLine(file);
//}
//Console.WriteLine("SzReadHeader <<<");
}
EIdEnum szReadID( SzData sd )
{
return (EIdEnum)szReadNumber( sd );
}
void szReadUnPackInfo(SzData sd, out uint numFolders, out Folder[] folders )
{
//Console.WriteLine("szReadUnPackInfo >>>");
szWaitAttribute( sd, EIdEnum.k7zIdFolder );
numFolders = szReadNumber32( sd );
//Console.WriteLine("numfolders: " + numFolders);
szReadSwitch(sd);
folders = new Folder[ numFolders ];
for ( uint i = 0; i < numFolders; i++)
{
folders[i] = szGetNextFolderItem(sd);
//Console.WriteLine(folders[i]);
}
szWaitAttribute( sd, EIdEnum.k7zIdCodersUnPackSize );
for ( uint i = 0; i < numFolders; i++)
{
Folder folder = folders[i];
uint numOutStreams = folder.GetNumOutStreams();
folder.UnPackSizes = new ulong[numOutStreams];
for ( uint j = 0; j < numOutStreams; j++)
{
folder.UnPackSizes[j] = szReadSize(sd);
//Console.WriteLine("unpacksize: " + folder.UnPackSizes[j]);
}
}
while( true )
{
EIdEnum type = szReadID( sd );
//Console.WriteLine( "got type: " + type );
if (type == EIdEnum.k7zIdEnd)
{
//Console.WriteLine("szReadUnPackInfo <<<");
return;
}
if (type == EIdEnum.k7zIdCRC)
{
bool[] crcsDefined;
uint[] crcs;
szReadHashDigests( sd, numFolders, out crcsDefined, out crcs );
for ( uint i = 0; i < numFolders; i++)
{
Folder folder = folders[i];
folder.UnPackCRCDefined = crcsDefined[i];
folder.UnPackCRC = crcs[i];
}
continue;
}
szSkeepData(sd);
}
//Console.WriteLine("szReadUnPackInfo <<<");
//return;
}
ulong szReadNumber( SzData sd )
{
//Console.WriteLine("SzReadNumber offset " + offset );
byte firstByte;
byte mask = 0x80;
int i;
//firstByte = data[offset];
firstByte = szReadByte(sd);
//RINOK(SzReadByte(sd, &firstByte));
//offset++;
ulong value = 0;
for (i = 0; i < 8; i++)
{
//Console.WriteLine(" offset " + offset + " i: " + i);
byte b;
if ((firstByte & mask) == 0)
{
ulong highPart = (ulong)( firstByte & (mask - 1) );
value += (highPart << (8 * i));
return value;
}
//b = data[offset];
//offset++;
b = szReadByte(sd);
//RINOK(SzReadByte(sd, &b));
value |= ((ulong)b << (8 * i));
mask >>= 1;
}
return value;
}
byte[] szReadBytes(SzData sd, ulong size)
{
byte[] bytes = new byte[size];
for ( ulong i = 0; i < size; i++)
{
bytes[i] = szReadByte( sd );
}
return bytes;
}
uint szReadUInt32(SzData sd)
{
uint value = 0;
for ( int i = 0; i < 4; i++)
{
byte b;
b = szReadByte( sd );
value |= ((UInt32)(b) << (8 * i));
}
return value;
}
byte szReadByte(SzData sd)
{
byte result = sd.Data[sd.Offset];
sd.Offset++;
return result;
}
void szArchiveOpen2(FileStream inStream, out ArchiveDatabaseEx db)
{
this.inStream = inStream;
db = new ArchiveDatabaseEx();
byte[] signature = new byte[k7zSignatureSize];
inStream.Read(signature, 0, k7zSignatureSize);
bytesread += k7zSignatureSize;
CheckSignature(signature);
byte MajorVersion = ReadByte();
CheckMajorVersion(MajorVersion);
byte version = ReadByte();
UInt32 crc = ReadUInt32();
ulong nextHeaderOffset = Readulong();
ulong nextHeaderSize = Readulong();
UInt32 nextHeaderCRC = ReadUInt32();
//Console.WriteLine("bytesread: " + bytesread);
//Console.WriteLine("k7zStartHeaderSize: " + k7zStartHeaderSize);
//Console.WriteLine("headeroffset: " + nextHeaderOffset);
//Console.WriteLine("nextHeaderSize: " + nextHeaderSize);
/* note to self: to do
CrcInit(&crc);
RINOK(SafeReadDirectUInt64(inStream, &nextHeaderOffset));
CrcUpdateUInt64(&crc, nextHeaderOffset);
RINOK(SafeReadDirectUInt64(inStream, &nextHeaderSize));
CrcUpdateUInt64(&crc, nextHeaderSize);
RINOK(SafeReadDirectUInt32(inStream, &nextHeaderCRC));
CrcUpdateUInt32(&crc, nextHeaderCRC);
*/
uint pos = k7zStartHeaderSize;
db.ArchiveInfo.StartPositionAfterHeader = pos;
//if (CrcGetDigest(&crc) != crcFromArchive)
//return SZE_ARCHIVE_ERROR;
if (nextHeaderSize == 0)
return;
inStream.Seek((long)(pos + nextHeaderOffset), SeekOrigin.Begin);
byte[] thisheader = new byte[nextHeaderSize];
inStream.Read(thisheader, 0, (int)nextHeaderSize);
// note to self: to do
// CrcVerifyDigest(nextHeaderCRC, buffer.Items, (UInt32)nextHeaderSize);
SzData sd = new SzData();
sd.Data = thisheader;
sd.Length = nextHeaderSize;
while (true)
{
//ulong thisheaderoffset = 0;
// Console.WriteLine((int)EIdEnum.k7zIdHeader);
//Console.WriteLine((int)EIdEnum.k7zIdEnd);
EIdEnum type = szReadID(sd);
//Console.WriteLine("szArchiveOpen2, got type: " + type);
if (type == EIdEnum.k7zIdHeader)
{
SzReadHeader(sd, db);
break;
}
if (type != EIdEnum.k7zIdEncodedHeader)
{
throw new Exception("Error: invalid type number read: " + type);
//break;
}
byte[] outBuffer;
//CSzByteBuffer outBuffer;
szReadAndDecodePackedStreams(inStream, sd, out outBuffer,
db.ArchiveInfo.StartPositionAfterHeader);
//res = SzReadAndDecodePackedStreams(inStream, &sd, &outBuffer,
// db->ArchiveInfo.StartPositionAfterHeader,
// allocTemp);
thisheader = outBuffer;
sd.Data = outBuffer;
sd.Length = Convert.ToUInt64(outBuffer.GetLongLength(0) );
sd.Offset = 0;
//Console.WriteLine(sd.Length);
//buffer.Items = outBuffer.Items;
//buffer.Capacity = outBuffer.Capacity;
}
}
void szReadPackInfo(SzData sd,
out ulong dataOffset, out uint numPackStreams, out ulong[] packSizes,
out bool[]packCRCsDefined, out uint[]packCRCs )
{
//Console.WriteLine("ReadPackInfo >>>");
packCRCsDefined = null;
packCRCs = null;
dataOffset = szReadSize(sd);
// Console.WriteLine("szREadPackInfo, dataOffset = " + dataOffset);
numPackStreams = szReadNumber32(sd);
szWaitAttribute(sd, EIdEnum.k7zIdSize);
packSizes = new ulong[ numPackStreams ];
for (ulong i = 0; i < numPackStreams; i++)
{
packSizes[i] = szReadSize(sd);
//Console.WriteLine("Packsize[" + i + "] : " + packSizes[i]);
}
while( true )
{
EIdEnum type = szReadID( sd );
//Console.WriteLine("ReadPackInfo 2, got type: " + type);
if (type == EIdEnum.k7zIdEnd)
break;
if (type == EIdEnum.k7zIdCRC)
{
szReadHashDigests(sd, numPackStreams, out packCRCsDefined, out packCRCs );
continue;
}
szSkeepData(sd);
}
if ( packCRCsDefined == null )
{
packCRCsDefined = new bool[numPackStreams];
packCRCs = new uint[ numPackStreams ];
for ( uint i = 0; i < numPackStreams; i++)
{
packCRCsDefined[i] = false;
packCRCs[i] = 0;
}
}
//Console.WriteLine("ReadPackInfo <<<");
}
ulong szReadSize(SzData sd)
{
return szReadNumber( sd );
}
Folder szGetNextFolderItem(SzData sd)
{
Folder folder = new Folder();
//Console.WriteLine("szGetNextFolderItem >>>");
uint numCoders = szReadNumber32(sd);
folder.NumCoders = numCoders;
//Console.WriteLine("numcoders: " + numCoders);
folder.Coders = new CoderInfo[numCoders];
uint numInStreams = 0;
uint numOutStreams = 0;
for (uint i = 0; i < numCoders; i++)
{
CoderInfo coder = new CoderInfo();
folder.Coders[i] = coder;
byte mainByte = szReadByte(sd);
coder.MethodID.IDSize = (byte)(mainByte & 0xF);
coder.MethodID.ID = szReadBytes(sd, coder.MethodID.IDSize);
if ((mainByte & 0x10) != 0)
{
coder.NumInStreams = szReadNumber32(sd);
coder.NumOutStreams = szReadNumber32(sd);
}
else
{
coder.NumInStreams = 1;
coder.NumOutStreams = 1;
}
if ((mainByte & 0x20) != 0)
{
UInt64 propertiesSize = szReadNumber(sd);
coder.Properties = szReadBytes(sd, propertiesSize);
}
while ((mainByte & 0x80) != 0)
{
mainByte = szReadByte(sd);
szSkeepDataSize(sd, (ulong)(mainByte & 0xF));
//RINOK(SzSkeepDataSize(sd, (mainByte & 0xF)));
if ((mainByte & 0x10) != 0)
{
//UInt32 n;
szReadNumber32(sd);
szReadNumber32(sd);
}
if ((mainByte & 0x20) != 0)
{
UInt64 propertiesSize = szReadNumber(sd);
szSkeepDataSize(sd, propertiesSize);
}
}
numInStreams += coder.NumInStreams;
numOutStreams += coder.NumOutStreams;
//Console.WriteLine(coder);
}
uint numBindPairs = numOutStreams - 1;
folder.NumBindPairs = numBindPairs;
//Console.WriteLine("numbindpairs: " + numBindPairs);
folder.BindPairs = new BindPair[numBindPairs];
for (uint i = 0; i < numBindPairs; i++)
{
BindPair bindpair = new BindPair();
folder.BindPairs[i] = bindpair;
//CBindPair *bindPair = folder->BindPairs + i;;
bindpair.InIndex = szReadNumber32(sd);
bindpair.OutIndex = szReadNumber32(sd);
//Console.WriteLine("Bind pair: " + i + " " + bindpair.ToString());
}
uint numPackedStreams = numInStreams - numBindPairs;
folder.NumPackStreams = numPackedStreams;
folder.PackStreams = new uint[numPackedStreams];
if (numPackedStreams == 1)
{
UInt32 pi = 0;
for (uint j = 0; j < numInStreams; j++)
{
if (folder.FindBindPairForInStream(j) < 0)
{
folder.PackStreams[pi++] = j;
break;
}
}
}
else
{
for (uint i = 0; i < numPackedStreams; i++)
{
folder.PackStreams[i] = szReadNumber32(sd);
}
}
//Console.WriteLine("szGetNextFolderItem <<<");
return folder;
}
uint szReadNumber32(SzData sd)
{
return (uint)szReadNumber( sd );
}
void szReadSubStreamsInfo( SzData sd, Folder[] folders,
out uint numUnPackStreams, out ulong[] unPackSizes, out bool[] digestsDefined,
out uint[] digests )
{
uint numDigests = 0;
uint numFolders = Convert.ToUInt32( folders.GetUpperBound(0) + 1 );
for ( uint i = 0; i < numFolders; i++)
{
folders[i].NumUnPackStreams = 1;
}
numUnPackStreams = numFolders;
EIdEnum type = EIdEnum.k7zIdEnd;
while( true )
{
type = szReadID(sd);
//Console.WriteLine("ReadSubStreamsInfo, got type: " + type);
if (type == EIdEnum.k7zIdNumUnPackStream)
{
numUnPackStreams = 0;
for ( uint i = 0; i < numFolders; i++)
{
uint numStreams = szReadNumber32(sd);
folders[i].NumUnPackStreams = numStreams;
numUnPackStreams += numStreams;
}
continue;
}
if (type == EIdEnum.k7zIdCRC || type == EIdEnum.k7zIdSize)
break;
if (type == EIdEnum.k7zIdEnd)
break;
szSkeepData(sd );
}
unPackSizes = null;
digestsDefined = null;
digests = null;
if (numUnPackStreams > 0)
{
unPackSizes = new ulong[numUnPackStreams];
digestsDefined = new bool[numUnPackStreams];
digests = new uint[numUnPackStreams];
//*unPackSizes = (CFileSize*)allocTemp->Alloc((size_t) * numUnPackStreams * sizeof(CFileSize));
//RINOM(*unPackSizes);
//*digestsDefined = (Byte*)allocTemp->Alloc((size_t) * numUnPackStreams * sizeof(Byte));
//RINOM(*digestsDefined);
//*digests = (UInt32*)allocTemp->Alloc((size_t) * numUnPackStreams * sizeof(UInt32));
//RINOM(*digests);
}
uint si = 0;
for ( uint i = 0; i < numFolders; i++)
{
//
//v3.13 incorrectly worked with empty folders
//v4.07: we check that folder is empty
//
ulong sum = 0;
uint numSubstreams = folders[i].NumUnPackStreams;
if (numSubstreams == 0)
continue;
if (type == EIdEnum.k7zIdSize)
{
for ( uint j = 1; j < numSubstreams; j++)
{
ulong size = szReadSize( sd );
unPackSizes[si] = size;
sum += size;
si++;
}
}
unPackSizes[ si ] = folders[i].GetUnPackSize() - sum;
//Console.Write("unpacksize[" + si + "] : " + unPackSizes[si]);
si++;
//(*unPackSizes)[si++] = SzFolderGetUnPackSize(folders + i) - sum;
}
if (type == EIdEnum.k7zIdSize)
{
type = szReadID( sd );
//Console.WriteLine("ReadSubStreamsInfo: 3, got type " + type);
}
for ( uint i = 0; i < numUnPackStreams; i++)
{
digestsDefined[i] = false;
digests[i] = 0;
}
for ( uint i = 0; i < numFolders; i++)
{
uint numSubstreams = folders[i].NumUnPackStreams;
if (numSubstreams != 1 || !folders[i].UnPackCRCDefined)
{
numDigests += numSubstreams;
}
}
si = 0;
while( true )
{
if (type == EIdEnum.k7zIdCRC)
{
int digestIndex = 0;
bool[] digestsDefined2;
uint[] digests2;
szReadHashDigests(sd, numDigests, out digestsDefined2, out digests2);
for ( uint i = 0; i < numFolders; i++)
{
Folder folder = folders[i];
uint numSubstreams = folder.NumUnPackStreams;
if (numSubstreams == 1 && folder.UnPackCRCDefined)
{
digestsDefined[si] = true;
digests[si] = folder.UnPackCRC;
si++;
}
else
{
for (uint j = 0; j < numSubstreams; j++, digestIndex++)
{
digestsDefined[si] = digestsDefined2[digestIndex];
digests[si] = digests2[digestIndex];
si++;
}
}
}
}
else if (type == EIdEnum.k7zIdEnd)
return;
else
{
szSkeepData( sd );
}
type = szReadID( sd );
}
}
void szReadSwitch(SzData sd)
{
byte external = szReadByte( sd );
if (external != 0)
{
throw new Exception("szReadSwitch, external should be zero");
}
}
void szReadFileNames(SzData sd, uint numFiles, FileItem[] files)
{
//Console.WriteLine("szReadFileNames >>> numfiles: " + numFiles);
uint i;
for (i = 0; i < numFiles; i++)
{
uint len = 0;
ulong pos = sd.Offset;
FileItem file = files[i];
while (pos + 2 <= sd.Length )
{
int numAdds;
uint value = (uint)(sd.Data[ pos] | (((uint)sd.Data[ pos + 1]) << 8));
pos += 2;
len++;
if (value == 0)
break;
if (value < 0x80)
continue;
if (value >= 0xD800 && value < 0xE000)
{
uint c2;
if (value >= 0xDC00)
{
throw new Exception("Unexpected value in szReadFileNames: " + value);
//return SZE_ARCHIVE_ERROR;
}
if (pos + 2 > sd.Length )
{
throw new Exception("End of file error in szReadFileNames");
//return SZE_ARCHIVE_ERROR;
}
c2 = (uint)(sd.Data[pos ] | (((uint)sd.Data[pos + 1]) << 8));
pos += 2;
if (c2 < 0xDC00 || c2 >= 0xE000)
{
throw new Exception("Unexpected c2 value in szReadFileNames: " + c2);
//return SZE_ARCHIVE_ERROR;
}
value = ((value - 0xD800) << 10) | (c2 - 0xDC00);
}
for (numAdds = 1; numAdds < 5; numAdds++)
if (value < (((uint)1) << (numAdds * 5 + 6)))
break;
len += (uint)numAdds;
}
char[] namechararray = new char[len];
//RINOK(MySzInAlloc((void **)&file->Name, (size_t)len * sizeof(char), allocFunc));
len = 0;
while ( sd.Length - sd.Offset >= 2 )
{
int numAdds;
uint value = (uint)(sd.Data[sd.Offset] | (((uint)sd.Data[sd.Offset + 1]) << 8));
szSkeepDataSize(sd, 2);
if (value < 0x80)
{
namechararray[len++] = (char)value;
if (value == 0)
break;
continue;
}
if (value >= 0xD800 && value < 0xE000)
{
uint c2 = (uint)(sd.Data[sd.Offset] | (((uint)sd.Data[sd.Offset + 1]) << 8));
szSkeepDataSize(sd, 2);
value = ((value - 0xD800) << 10) | (c2 - 0xDC00);
}
for (numAdds = 1; numAdds < 5; numAdds++)
if (value < (((uint)1) << (numAdds * 5 + 6)))
break;
namechararray[len++] = (char)(kUtf8Limits[numAdds - 1] + (value >> (6 * numAdds)));
do
{
numAdds--;
namechararray[len++] = (char)(0x80 + ((value >> (6 * numAdds)) & 0x3F));
}
while (numAdds > 0);
len += (uint)numAdds;
}
file.Name = new String( namechararray );
//Console.WriteLine("Filename: " + file.Name);
}
}
bool[] szReadBoolVector( SzData sd, ulong numItems )
{
byte b = 0;
byte mask = 0;
bool[]v = new bool[numItems];
for( ulong i = 0; i < numItems; i++)
{
if (mask == 0)
{
b = szReadByte( sd );
mask = 0x80;
}
if ((b & mask) != 0)
{
v[i] = true;
}
else
{
v[i] = false;
}
//(*v)[i] = (Byte)(((b & mask) != 0) ? 1 : 0);
mask >>= 1;
}
return v;
}
void szSkeepDataSize( SzData sd, UInt64 size)
{
//if( size > data.GetUpperBound(0) + 1)
//{
// throw new Exception("szSkeepDataSize: end of file error");
//}
sd.Offset += size;
}
bool[] szReadBoolVector2(SzData sd, ulong numItems)
{
byte allAreDefined = szReadByte( sd );
if (allAreDefined == 0)
{
return szReadBoolVector(sd, numItems);
}
bool[] v = new bool[numItems];
for (ulong i = 0; i < numItems; i++)
{
v[i] = true;
}
return v;
}
void SzReadAndDecodePackedStreams2(
FileStream inStream,
SzData sd,
out byte[] outBuffer,
ulong baseOffset,
ArchiveDatabase db,
out ulong[] unPackSizes,
out bool[] digestsDefined,
out uint[] digests
)
{
uint numUnPackStreams = 0;
ulong dataStartPos = 0;
Folder folder;
ulong unPackSize;
//ulong outRealSize;
ulong packSize = 0;
//uint i = 0;
outBuffer = null;
szReadStreamsInfo(sd, out dataStartPos, db, out numUnPackStreams, out unPackSizes,
out digestsDefined, out digests);
//RINOK(SzReadStreamsInfo(sd, &dataStartPos, db,
//&numUnPackStreams, unPackSizes, digestsDefined, digests,
//allocTemp->Alloc, allocTemp));
dataStartPos += baseOffset;
if (db.NumFolders != 1)
{
throw new Exception("db.NumFolders value unexpected: " + db.NumFolders);
}
folder = db.Folders[0];
unPackSize = folder.GetUnPackSize();
//Console.WriteLine("datastartpos : " + dataStartPos);
inStream.Seek((long)dataStartPos, SeekOrigin.Begin);
//#ifndef _LZMA_IN_CB
for (uint i = 0; i < db.NumPackStreams; i++)
packSize += db.PackSizes[i];
//Console.WriteLine("packsize: " + packSize);
//RINOK(MySzInAlloc((void **)inBuffer, (size_t)packSize, allocTemp->Alloc));
//RINOK(SafeReadDirect(inStream, *inBuffer, (size_t)packSize));
//#endif
outBuffer = new byte[unPackSize];
//if (!SzByteBufferCreate(outBuffer, (size_t)unPackSize, allocTemp->Alloc))
// return SZE_OUTOFMEMORY;
byte[]inbuffer = new byte[ packSize ];
inStream.Read( inbuffer, 0, (int)packSize );
//Console.WriteLine("NumCoders: " + ( folder.Coders.GetUpperBound(0) + 1 ));
//Console.WriteLine("Coder: " + folder.Coders[0]);
//Console.WriteLine("Coder num properties: " + folder.Coders[0].Properties.GetUpperBound(0) + 1);
//DumpBytes(folder.Coders[0].Properties, folder.Coders[0].Properties.GetUpperBound(0) + 1);
inStream.Seek((long)dataStartPos, SeekOrigin.Begin);
//byte[] properties = new byte[5];
//inStream.Read(properties, 0, 5);
Compression.LZMA.Decoder decoder = new SevenZip.Compression.LZMA.Decoder();
decoder.SetDecoderProperties(folder.Coders[0].Properties);
MemoryStream outStream = new MemoryStream(outBuffer);
decoder.Code(inStream, outStream, (long)( packSize - 5 ), (long)unPackSize, null);
outStream.Close();
//DumpBytes(outBuffer, (int)unPackSize);
//Console.WriteLine(outBuffer.GetUpperBound(0) + 1);
//for (ulong i = 0; i < unPackSize; i++)
//{
// Console.WriteLine( (char)outBuffer[i]);
//}
//SzDecode(db.PackSizes, folder,
//#ifdef _LZMA_IN_CB
// inStream,
//#else
//*inBuffer,
//#endif
// outBuffer, unPackSize,
// out outRealSize);
//if (outRealSize != (uint)unPackSize)
//{
// throw new Exception("OutRealSize != unPackSize " + outRealSize + " vs " + unPackSize);
//}
//if (folder.UnPackCRCDefined)
//{
// note to self: to do
//if (!CrcVerifyDigest(folder->UnPackCRC, outBuffer->Items, (size_t)unPackSize))
//{
// return SZE_FAIL;
//}
//}
}
void szSkeepData(SzData sd)
{
UInt64 size = szReadNumber( sd );
szSkeepDataSize(sd, size);
}