private void WriteLocalHeader(ref ZipStorer.ZipFileEntry zipFileEntry)
{
long position = this.zipFileStream.Position;
Encoding encoding = zipFileEntry.EncodeUTF8 ? Encoding.UTF8 : ZipStorer.defaultEncoding;
byte[] bytes = encoding.GetBytes(zipFileEntry.FilenameInZip);
this.zipFileStream.Write(new byte[]
{
80,
75,
3,
4,
20,
0
}, 0, 6);
this.zipFileStream.Write(BitConverter.GetBytes(zipFileEntry.EncodeUTF8 ? 2048 : 0), 0, 2);
this.zipFileStream.Write(BitConverter.GetBytes((ushort)zipFileEntry.Method), 0, 2);
this.zipFileStream.Write(BitConverter.GetBytes(ZipStorer.DateTimeToDosTime(zipFileEntry.ModifyTime)), 0, 4);
Stream arg_C2_0 = this.zipFileStream;
byte[] buffer = new byte[12];
arg_C2_0.Write(buffer, 0, 12);
this.zipFileStream.Write(BitConverter.GetBytes((ushort)bytes.Length), 0, 2);
this.zipFileStream.Write(BitConverter.GetBytes(0), 0, 2);
this.zipFileStream.Write(bytes, 0, bytes.Length);
zipFileEntry.HeaderSize = (uint)(this.zipFileStream.Position - position);
}
private void WriteCentralDirRecord(ZipStorer.ZipFileEntry zipFileEntry)
{
Encoding encoding = zipFileEntry.EncodeUTF8 ? Encoding.UTF8 : ZipStorer.defaultEncoding;
byte[] bytes = encoding.GetBytes(zipFileEntry.FilenameInZip);
byte[] bytes2 = encoding.GetBytes(zipFileEntry.Comment);
this.zipFileStream.Write(new byte[]
{
80,
75,
1,
2,
23,
11,
20,
0
}, 0, 8);
this.zipFileStream.Write(BitConverter.GetBytes(zipFileEntry.EncodeUTF8 ? 2048 : 0), 0, 2);
this.zipFileStream.Write(BitConverter.GetBytes((ushort)zipFileEntry.Method), 0, 2);
this.zipFileStream.Write(BitConverter.GetBytes(ZipStorer.DateTimeToDosTime(zipFileEntry.ModifyTime)), 0, 4);
this.zipFileStream.Write(BitConverter.GetBytes(zipFileEntry.Crc32), 0, 4);
this.zipFileStream.Write(BitConverter.GetBytes(zipFileEntry.CompressedSize), 0, 4);
this.zipFileStream.Write(BitConverter.GetBytes(zipFileEntry.FileSize), 0, 4);
this.zipFileStream.Write(BitConverter.GetBytes((ushort)bytes.Length), 0, 2);
this.zipFileStream.Write(BitConverter.GetBytes(0), 0, 2);
this.zipFileStream.Write(BitConverter.GetBytes((ushort)bytes2.Length), 0, 2);
this.zipFileStream.Write(BitConverter.GetBytes(0), 0, 2);
this.zipFileStream.Write(BitConverter.GetBytes(0), 0, 2);
this.zipFileStream.Write(BitConverter.GetBytes(0), 0, 2);
this.zipFileStream.Write(BitConverter.GetBytes(33024), 0, 2);
this.zipFileStream.Write(BitConverter.GetBytes(zipFileEntry.HeaderOffset), 0, 4);
this.zipFileStream.Write(bytes, 0, bytes.Length);
this.zipFileStream.Write(bytes2, 0, bytes2.Length);
}
private void UpdateCrcAndSizes(ref ZipStorer.ZipFileEntry zipFileEntry)
{
long position = this.zipFileStream.Position;
this.zipFileStream.Position = (long)((ulong)(zipFileEntry.HeaderOffset + 8u));
this.zipFileStream.Write(BitConverter.GetBytes((ushort)zipFileEntry.Method), 0, 2);
this.zipFileStream.Position = (long)((ulong)(zipFileEntry.HeaderOffset + 14u));
this.zipFileStream.Write(BitConverter.GetBytes(zipFileEntry.Crc32), 0, 4);
this.zipFileStream.Write(BitConverter.GetBytes(zipFileEntry.CompressedSize), 0, 4);
this.zipFileStream.Write(BitConverter.GetBytes(zipFileEntry.FileSize), 0, 4);
this.zipFileStream.Position = position;
}
private void Store(ref ZipStorer.ZipFileEntry zipFileEntry, Stream sourceStream)
{
byte[] array = new byte[16384];
uint num = 0u;
long position = this.zipFileStream.Position;
long position2 = sourceStream.Position;
Stream stream;
if (zipFileEntry.Method == ZipStorer.CompressionMethod.Store)
{
stream = this.zipFileStream;
}
else
{
stream = new DeflateStream(this.zipFileStream, CompressionMode.Compress, true);
}
zipFileEntry.Crc32 = 4294967295u;
int num2;
do
{
num2 = sourceStream.Read(array, 0, array.Length);
num += (uint)num2;
if (num2 > 0)
{
stream.Write(array, 0, num2);
uint num3 = 0u;
while ((ulong)num3 < (ulong)((long)num2))
{
zipFileEntry.Crc32 = (ZipStorer.crcTable[(int)((UIntPtr)((zipFileEntry.Crc32 ^ (uint)array[(int)((UIntPtr)num3)]) & 255u))] ^ zipFileEntry.Crc32 >> 8);
num3 += 1u;
}
}
}while (num2 == array.Length);
stream.Flush();
if (zipFileEntry.Method == ZipStorer.CompressionMethod.Deflate)
{
stream.Dispose();
}
zipFileEntry.Crc32 ^= 4294967295u;
zipFileEntry.FileSize = num;
zipFileEntry.CompressedSize = (uint)(this.zipFileStream.Position - position);
if (zipFileEntry.Method == ZipStorer.CompressionMethod.Deflate && !this.ForceDeflating && sourceStream.CanSeek && zipFileEntry.CompressedSize > zipFileEntry.FileSize)
{
zipFileEntry.Method = ZipStorer.CompressionMethod.Store;
this.zipFileStream.Position = position;
this.zipFileStream.SetLength(position);
sourceStream.Position = position2;
this.Store(ref zipFileEntry, sourceStream);
}
}
public List <ZipStorer.ZipFileEntry> ReadCentralDirectory()
{
if (this.centralDirectoryImage == null)
{
throw new InvalidOperationException("Central directory currently does not exist");
}
List <ZipStorer.ZipFileEntry> list = new List <ZipStorer.ZipFileEntry>();
ushort num2;
ushort num3;
ushort num4;
for (int i = 0; i < this.centralDirectoryImage.Length; i += (int)(46 + num2 + num3 + num4))
{
uint num = BitConverter.ToUInt32(this.centralDirectoryImage, i);
if (num != 33639248u)
{
break;
}
bool flag = (BitConverter.ToUInt16(this.centralDirectoryImage, i + 8) & 2048) != 0;
ushort method = BitConverter.ToUInt16(this.centralDirectoryImage, i + 10);
uint dosTime = BitConverter.ToUInt32(this.centralDirectoryImage, i + 12);
uint crc = BitConverter.ToUInt32(this.centralDirectoryImage, i + 16);
uint compressedSize = BitConverter.ToUInt32(this.centralDirectoryImage, i + 20);
uint fileSize = BitConverter.ToUInt32(this.centralDirectoryImage, i + 24);
num2 = BitConverter.ToUInt16(this.centralDirectoryImage, i + 28);
num3 = BitConverter.ToUInt16(this.centralDirectoryImage, i + 30);
num4 = BitConverter.ToUInt16(this.centralDirectoryImage, i + 32);
uint headerOffset = BitConverter.ToUInt32(this.centralDirectoryImage, i + 42);
uint headerSize = (uint)(46 + num2 + num3 + num4);
Encoding encoding = flag ? Encoding.UTF8 : ZipStorer.defaultEncoding;
ZipStorer.ZipFileEntry item = default(ZipStorer.ZipFileEntry);
item.Method = (ZipStorer.CompressionMethod)method;
item.FilenameInZip = encoding.GetString(this.centralDirectoryImage, i + 46, (int)num2);
item.FileOffset = this.GetFileOffset(headerOffset);
item.FileSize = fileSize;
item.CompressedSize = compressedSize;
item.HeaderOffset = headerOffset;
item.HeaderSize = headerSize;
item.Crc32 = crc;
item.ModifyTime = ZipStorer.DosTimeToDateTime(dosTime);
if (num4 > 0)
{
item.Comment = encoding.GetString(this.centralDirectoryImage, i + 46 + (int)num2 + (int)num3, (int)num4);
}
list.Add(item);
}
return(list);
}
public bool ExtractFile(ZipStorer.ZipFileEntry zipFileEntry, Stream destinationStream)
{
if (!destinationStream.CanWrite)
{
throw new InvalidOperationException("Stream cannot be written");
}
byte[] array = new byte[4];
this.zipFileStream.Seek((long)((ulong)zipFileEntry.HeaderOffset), SeekOrigin.Begin);
this.zipFileStream.Read(array, 0, 4);
if (BitConverter.ToUInt32(array, 0) != 67324752u)
{
return(false);
}
Stream stream;
if (zipFileEntry.Method == ZipStorer.CompressionMethod.Store)
{
stream = this.zipFileStream;
}
else
{
if (zipFileEntry.Method != ZipStorer.CompressionMethod.Deflate)
{
return(false);
}
stream = new DeflateStream(this.zipFileStream, CompressionMode.Decompress, true);
}
byte[] array2 = new byte[16384];
this.zipFileStream.Seek((long)((ulong)zipFileEntry.FileOffset), SeekOrigin.Begin);
int num2;
for (uint num = zipFileEntry.FileSize; num > 0u; num -= (uint)num2)
{
num2 = stream.Read(array2, 0, (int)Math.Min((long)((ulong)num), (long)array2.Length));
destinationStream.Write(array2, 0, num2);
}
destinationStream.Flush();
if (zipFileEntry.Method == ZipStorer.CompressionMethod.Deflate)
{
stream.Dispose();
}
return(true);
}
public void AddStream(ZipStorer.CompressionMethod compressionMethod, Stream sourceStream, string fileNameInZip, DateTime modificationTimeStamp, string fileEntryComment)
{
if (this.access == FileAccess.Read)
{
throw new InvalidOperationException("Writing is not allowed");
}
ZipStorer.ZipFileEntry item = default(ZipStorer.ZipFileEntry);
item.Method = compressionMethod;
item.EncodeUTF8 = this.EncodeUtf8;
item.FilenameInZip = ZipStorer.NormalizeFileName(fileNameInZip);
item.Comment = ((fileEntryComment == null) ? string.Empty : fileEntryComment);
item.Crc32 = 0u;
item.HeaderOffset = (uint)this.zipFileStream.Position;
item.ModifyTime = modificationTimeStamp;
this.WriteLocalHeader(ref item);
item.FileOffset = (uint)this.zipFileStream.Position;
this.Store(ref item, sourceStream);
sourceStream.Close();
this.UpdateCrcAndSizes(ref item);
this.files.Add(item);
}
public bool ExtractFile(ZipStorer.ZipFileEntry zipFileEntry, string destinationFileName)
{
string directoryName = Path.GetDirectoryName(destinationFileName);
if (!Directory.Exists(directoryName))
{
Directory.CreateDirectory(directoryName);
}
if (Directory.Exists(destinationFileName))
{
return(true);
}
bool result = false;
using (Stream stream = new FileStream(destinationFileName, FileMode.Create, FileAccess.Write))
{
result = this.ExtractFile(zipFileEntry, stream);
}
File.SetCreationTime(destinationFileName, zipFileEntry.ModifyTime);
File.SetLastWriteTime(destinationFileName, zipFileEntry.ModifyTime);
return(result);
}
public gSheet Sheet = null; // This links to a data sheet if his stream implements a data sheet
public gStream(OoXml doc, ZipStorer zip, ZipStorer.ZipFileEntry z) // This constructor is called when creating the stream from the source template
{
Document = doc; // Save a reference to the document
zfe = z; // Store the ZipFileEntry
}
public PakkedFile(string name, string handle, int index, ZipStorer.ZipFileEntry entry)
{
Name = name;
Handle = handle;
IsPakked = true;
PakIndex = index;
Entry = entry;
}
