private void AddEntry(ZipFile workFile, ZipUpdate update)
{
Stream source = null;
if (update.Entry.IsFile)
{
source = update.GetSource();
if (source == null)
{
source = updateDataSource_.GetSource(update.Entry, update.Filename);
}
}
if (source != null)
{
using (source)
{
long length = source.Length;
if (update.OutEntry.Size < 0L)
{
update.OutEntry.Size = length;
}
else if (update.OutEntry.Size != length)
{
throw new ZipException("Entry size/stream size mismatch");
}
workFile.WriteLocalEntryHeader(update);
long position = workFile.baseStream_.Position;
using (Stream stream2 = workFile.GetOutputStream(update.OutEntry))
{
CopyBytes(update, stream2, source, length, true);
}
long num3 = workFile.baseStream_.Position;
update.OutEntry.CompressedSize = num3 - position;
if ((update.OutEntry.Flags & 8) == 8)
{
new ZipHelperStream(workFile.baseStream_).WriteDataDescriptor(update.OutEntry);
}
return;
}
}
workFile.WriteLocalEntryHeader(update);
update.OutEntry.CompressedSize = 0L;
}
private void CopyEntryDirect(ZipFile workFile, ZipUpdate update, ref long destinationPosition)
{
bool flag = false;
if (update.Entry.Offset == destinationPosition)
{
flag = true;
}
if (!flag)
{
baseStream_.Position = destinationPosition;
workFile.WriteLocalEntryHeader(update);
destinationPosition = baseStream_.Position;
}
long offset = update.Entry.Offset + 0x1aL;
baseStream_.Seek(offset, SeekOrigin.Begin);
uint num3 = ReadLEUshort();
uint num4 = ReadLEUshort();
long sourcePosition = (baseStream_.Position + num3) + num4;
if (flag)
{
if (update.OffsetBasedSize != -1L)
{
destinationPosition += update.OffsetBasedSize;
}
else
{
destinationPosition += (((sourcePosition - offset) + 0x1aL) + update.Entry.CompressedSize) + GetDescriptorSize(update);
}
}
else
{
if (update.Entry.CompressedSize > 0L)
{
CopyEntryDataDirect(update, baseStream_, false, ref destinationPosition, ref sourcePosition);
}
CopyDescriptorBytesDirect(update, baseStream_, ref destinationPosition, sourcePosition);
}
}
private void ModifyEntry(ZipFile workFile, ZipUpdate update)
{
workFile.WriteLocalEntryHeader(update);
long position = workFile.baseStream_.Position;
if (update.Entry.IsFile && (update.Filename != null))
{
using (Stream stream = workFile.GetOutputStream(update.OutEntry))
{
using (Stream stream2 = GetInputStream(update.Entry))
{
CopyBytes(update, stream, stream2, stream2.Length, true);
}
}
}
long num2 = workFile.baseStream_.Position;
update.Entry.CompressedSize = num2 - position;
}
private void CopyEntry(ZipFile workFile, ZipUpdate update)
{
workFile.WriteLocalEntryHeader(update);
if (update.Entry.CompressedSize > 0L)
{
long offset = update.Entry.Offset + 0x1aL;
baseStream_.Seek(offset, SeekOrigin.Begin);
uint num2 = ReadLEUshort();
uint num3 = ReadLEUshort();
baseStream_.Seek(num2 + num3, SeekOrigin.Current);
CopyBytes(update, workFile.baseStream_, baseStream_, update.Entry.CompressedSize, false);
}
CopyDescriptorBytes(update, workFile.baseStream_, baseStream_);
}