private int WriteCentralDirectoryHeader(ZipEntry entry)
{
if (entry.CompressedSize < 0L)
{
throw new ZipException("Attempt to write central directory entry with unknown csize");
}
if (entry.Size < 0L)
{
throw new ZipException("Attempt to write central directory entry with unknown size");
}
if (entry.Crc < 0L)
{
throw new ZipException("Attempt to write central directory entry with unknown crc");
}
WriteLEInt(0x2014b50);
WriteLEShort(0x33);
WriteLEShort(entry.Version);
WriteLEShort(entry.Flags);
WriteLEShort((byte)entry.CompressionMethod);
WriteLEInt((int)entry.DosTime);
WriteLEInt((int)entry.Crc);
if (entry.IsZip64Forced() || (entry.CompressedSize >= 0xffffffffL))
{
WriteLEInt(-1);
}
else
{
WriteLEInt((int)(((ulong)entry.CompressedSize) & 0xffffffffL));
}
if (entry.IsZip64Forced() || (entry.Size >= 0xffffffffL))
{
WriteLEInt(-1);
}
else
{
WriteLEInt((int)entry.Size);
}
byte[] buffer = ZipConstants.ConvertToArray(entry.Flags, entry.Name);
if (buffer.Length > 0xffff)
{
throw new ZipException("Entry name is too long.");
}
WriteLEShort(buffer.Length);
ZipExtraData data = new ZipExtraData(entry.ExtraData);
if (entry.CentralHeaderRequiresZip64)
{
data.StartNewEntry();
if ((entry.Size >= 0xffffffffL) || (useZip64_ == UseZip64.On))
{
data.AddLeLong(entry.Size);
}
if ((entry.CompressedSize >= 0xffffffffL) || (useZip64_ == UseZip64.On))
{
data.AddLeLong(entry.CompressedSize);
}
if (entry.Offset >= 0xffffffffL)
{
data.AddLeLong(entry.Offset);
}
data.AddNewEntry(1);
}
else
{
data.Delete(1);
}
byte[] entryData = data.GetEntryData();
WriteLEShort(entryData.Length);
WriteLEShort((entry.Comment != null) ? entry.Comment.Length : 0);
WriteLEShort(0);
WriteLEShort(0);
if (entry.ExternalFileAttributes != -1)
{
WriteLEInt(entry.ExternalFileAttributes);
}
else if (entry.IsDirectory)
{
WriteLEUint(0x10);
}
else
{
WriteLEUint(0);
}
if (entry.Offset >= 0xffffffffL)
{
WriteLEUint(uint.MaxValue);
}
else
{
WriteLEUint((uint)((int)entry.Offset));
}
if (buffer.Length > 0)
{
baseStream_.Write(buffer, 0, buffer.Length);
}
if (entryData.Length > 0)
{
baseStream_.Write(entryData, 0, entryData.Length);
}
byte[] buffer3 = (entry.Comment != null) ? Encoding.ASCII.GetBytes(entry.Comment) : new byte[0];
if (buffer3.Length > 0)
{
baseStream_.Write(buffer3, 0, buffer3.Length);
}
return (((0x2e + buffer.Length) + entryData.Length) + buffer3.Length);
}