public long AddFileData(byte[] data, int pos, int len)
{
long totalSize = currentFile.CurrentSize + len;
if (totalSize > currentFile.Size)
{
throw new ApplicationException("totalSize > currentFile.Size");
}
if (currentFile.Compress == false)
{
fifo.Write(data, pos, len);
}
else
{
CoreUtil.Internal.ZStream zs = currentFile.ZStream;
byte[] srcData = Util.ExtractByteArray(data, pos, len);
byte[] dstData = new byte[srcData.Length * 2 + 100];
zs.next_in = srcData;
zs.avail_in = srcData.Length;
zs.next_in_index = 0;
zs.next_out = dstData;
zs.avail_out = dstData.Length;
zs.next_out_index = 0;
if (currentFile.Size == (currentFile.CurrentSize + len))
{
zs.deflate(CoreUtil.Internal.zlibConst.Z_FINISH);
}
else
{
zs.deflate(CoreUtil.Internal.zlibConst.Z_SYNC_FLUSH);
}
fifo.Write(dstData, 0, dstData.Length - zs.avail_out);
currentFile.CompressSize += dstData.Length - zs.avail_out;
Util.NoOP();
}
currentFile.CurrentSize += len;
currentFile.Crc32 = ZipUtil.Crc32Next(data, pos, len, currentFile.Crc32);
long ret = currentFile.Size - currentFile.CurrentSize;
if (ret == 0)
{
currentFile.Crc32 = ~currentFile.Crc32;
addFileFooter();
currentFile = null;
}
return(ret);
}