private void method_17()
{
MemoryStream sectionStream = new MemoryStream();
Class889 class889 = Class889.Create((Stream)sectionStream, this.dxfVersion_0, this.encoding_0);
class889.vmethod_9(this.list_0.Count);
class889.vmethod_9(2);
class889.vmethod_9(29696);
class889.vmethod_9(0);
class889.vmethod_9(this.list_0.Count);
foreach (Class617 class617 in this.list_0)
{
class889.vmethod_15(class617.SectionSize);
class889.vmethod_9(class617.PageCount);
class889.vmethod_9(class617.MaxDecompressedPageSize);
class889.vmethod_9(1);
class889.vmethod_9(class617.Compressed);
class889.vmethod_9(class617.SectionId);
class889.vmethod_9(class617.Encrypted);
byte[] buffer = new byte[64];
if (!string.IsNullOrEmpty(class617.Name))
{
byte[] bytes = Encodings.Ascii.GetBytes(class617.Name);
int num = Math.Min(bytes.Length, buffer.Length);
for (int index = 0; index < num; ++index)
{
buffer[index] = bytes[index];
}
}
sectionStream.Write(buffer, 0, buffer.Length);
foreach (Class616 page in class617.Pages)
{
if (page.PageNumber > 0)
{
class889.vmethod_9(page.PageNumber);
class889.vmethod_9(page.CompressedSize);
class889.vmethod_15(page.StartOffset);
}
}
}
Class615 page1 = this.method_20(1097007163, sectionStream);
int count = Class998.smethod_0((int)(this.stream_0.Position - page1.StreamOffset));
this.stream_0.Write(Class998.byte_0, 0, count);
page1.Length = this.stream_0.Position - page1.StreamOffset;
this.method_19(page1);
}
private void method_2(MemoryStream fileHeaderDataStream)
{
Stream2 stream2 = new Stream2((Stream)fileHeaderDataStream, 0U);
Class889 class889 = Class889.Create((Stream)stream2, this.dxfVersion_0, this.encoding_0);
byte[] bytes = Class1045.encoding_0.GetBytes("AcFssFcAJMB");
stream2.Write(bytes, 0, 11);
stream2.WriteByte((byte)0);
class889.vmethod_9(0);
class889.vmethod_9(108);
class889.vmethod_9(4);
class889.vmethod_9(this.class564_0.GapsRootId);
class889.vmethod_9(this.class564_0.GapsLeftId);
class889.vmethod_9(this.class564_0.GapsRightId);
class889.vmethod_9(this.class564_0.GapsUnknown);
class889.vmethod_9(this.class564_0.LastPageId);
class889.vmethod_15(this.class564_0.LastPageEndOffset);
class889.vmethod_15(this.class564_0.Header2Offset);
class889.vmethod_11(this.class564_0.GapCount);
class889.vmethod_11(this.class564_0.PageCount);
class889.vmethod_9(32);
class889.vmethod_9(128);
class889.vmethod_9(64);
class889.vmethod_11(this.class564_0.PagesMapId);
class889.vmethod_15(this.class564_0.PagesMapOffset - 256UL);
class889.vmethod_11(this.class564_0.SectionsMapId);
class889.vmethod_11(this.class564_0.PagesMaxId);
class889.vmethod_11(this.class564_0.GapsMaxId);
long position = stream2.Position;
class889.vmethod_11(0U);
uint crc = stream2.Crc;
stream2.Position = position;
class889.vmethod_11(crc);
stream2.Flush();
this.method_3(fileHeaderDataStream);
}
private void method_3(Class889 byteStream)
{
byteStream.vmethod_15(this.class954_0.HeaderSize);
byteStream.vmethod_15(this.class954_0.FileSize);
byteStream.vmethod_15(this.class954_0.PagesMapCrcCompressed);
byteStream.vmethod_15(this.class954_0.PagesMapDataRepeatCount);
byteStream.vmethod_15(this.class954_0.PagesMapCrcSeed);
byteStream.vmethod_15(this.class954_0.PagesMap2Offset);
byteStream.vmethod_15(this.class954_0.PagesMap2Id);
byteStream.vmethod_15(this.class954_0.PagesMapOffset);
byteStream.vmethod_15(this.class954_0.PagesMapId);
byteStream.vmethod_15(this.class954_0.Header2Offset);
byteStream.vmethod_15(this.class954_0.PagesMapSizeCompressed);
byteStream.vmethod_15(this.class954_0.PagesMapSizeDecompressed);
byteStream.vmethod_15(this.class954_0.PageCount);
byteStream.vmethod_15(this.class954_0.PagesMaxId);
byteStream.vmethod_15(this.class954_0.Unknown1);
byteStream.vmethod_15(this.class954_0.Unknown2);
byteStream.vmethod_15(this.class954_0.PagesMapCrcDecompressed);
byteStream.vmethod_15(this.class954_0.Unknown3);
byteStream.vmethod_15(this.class954_0.Unknown4);
byteStream.vmethod_15(this.class954_0.Unknown5);
byteStream.vmethod_15(this.class954_0.SectionCount);
byteStream.vmethod_15(this.class954_0.SectionsMapCrcDecompressed);
byteStream.vmethod_15(this.class954_0.SectionsMapSizeCompressed);
byteStream.vmethod_15(this.class954_0.SectionsMap2Id);
byteStream.vmethod_15(this.class954_0.SectionsMapId);
byteStream.vmethod_15(this.class954_0.SectionsMapSizeDecompressed);
byteStream.vmethod_15(this.class954_0.SectionsMapCrcCompressed);
byteStream.vmethod_15(this.class954_0.SectionsMapDataRepeatCount);
byteStream.vmethod_15(this.class954_0.SectionsMapCrcSeed);
byteStream.vmethod_15(this.class954_0.StreamVersion);
byteStream.vmethod_15(this.class954_0.CrcSeed);
byteStream.vmethod_15(this.class954_0.CrcSeedEncoded);
byteStream.vmethod_15(this.class954_0.RandomSeed);
byteStream.vmethod_15(0UL);
}
private void method_17(Class504 section, Class889 byteStream)
{
byteStream.vmethod_15(section.DataSize);
byteStream.vmethod_15(section.MaxDecompressedPageSize);
byteStream.vmethod_15(section.Encrypted);
byteStream.vmethod_15(section.HashCode);
ulong num = (ulong)section.Name.Length;
if (num > 0UL)
{
num = (ulong)((long)num + 1L << 1);
}
byteStream.vmethod_15(num);
byteStream.vmethod_15(section.Unknown);
byteStream.vmethod_15(section.Encoding);
byteStream.vmethod_15(section.PageCount);
if (num > 0UL)
{
byte[] bytes = Encoding.Unicode.GetBytes(section.Name);
byteStream.Stream.Write(bytes, 0, bytes.Length);
byteStream.vmethod_1((byte)0);
byteStream.vmethod_1((byte)0);
}
foreach (Class443 page in section.Pages)
{
byteStream.vmethod_15(page.DataOffset);
byteStream.vmethod_15(page.PageSize);
byteStream.vmethod_13(page.Id);
byteStream.vmethod_15(page.DecompressedSize);
byteStream.vmethod_15(page.CompressedSize);
byteStream.vmethod_15(page.CheckSum);
byteStream.vmethod_15(page.Crc);
}
}
private unsafe void method_1()
{
this.stream_0.Position = this.stream_0.Length;
this.class954_0.FileSize = (ulong)(this.stream_0.Length + 1024L);
this.class954_0.Header2Offset = (ulong)(this.stream_0.Position - 1152L);
this.class954_0.SectionsMapCrcSeed = this.class995_0.method_2((uint)this.class954_0.SectionsMapCrcSeed);
this.class954_0.PagesMapCrcSeed = this.class995_0.method_2((uint)this.class954_0.PagesMapCrcSeed);
Class888 class888 = new Class888();
class888.method_0(this.class954_0.CrcSeed, this.class995_0);
this.class954_0.CrcSeedEncoded = this.class995_0.method_2((uint)(this.class954_0.CrcSeed & (ulong)ushort.MaxValue));
MemoryStream memoryStream1 = new MemoryStream();
Class889 byteStream = Class889.Create((Stream)memoryStream1, this.dxfVersion_0, this.encoding_0);
this.method_3(byteStream);
ulong num1 = Class656.class656_0.method_0(memoryStream1.GetBuffer(), 0U, (uint)memoryStream1.Length, Class656.smethod_1(0UL, (uint)memoryStream1.Length));
memoryStream1.Position = 264L;
byteStream.vmethod_15(num1);
Class955 class955 = new Class955();
MemoryStream memoryStream2 = new MemoryStream();
class955.method_1(memoryStream1.GetBuffer(), 0, (int)memoryStream1.Length, (Stream)memoryStream2);
if (memoryStream2.Length >= memoryStream1.Length)
{
memoryStream2 = memoryStream1;
}
ulong num2 = Class656.class656_0.method_0(memoryStream2.GetBuffer(), 0U, (uint)memoryStream2.Length, Class656.smethod_1(0UL, (uint)memoryStream2.Length));
MemoryStream memoryStream3 = new MemoryStream(12);
Class889 class889_1 = Class889.Create((Stream)memoryStream3, this.dxfVersion_0, this.encoding_0);
ulong control = this.class995_0.method_1();
class889_1.vmethod_15(control);
class889_1.vmethod_15(Class888.smethod_0(control, control));
ulong num3 = Class656.class656_0.method_0(memoryStream3.GetBuffer(), 0U, (uint)memoryStream3.Length, Class656.smethod_0(0UL, (uint)memoryStream3.Length));
MemoryStream memoryStream4 = new MemoryStream(1024);
Class889 class889_2 = Class889.Create((Stream)memoryStream4, this.dxfVersion_0, this.encoding_0);
class889_2.vmethod_15(num3);
class889_2.vmethod_15(control);
class889_2.vmethod_15(num2);
if (memoryStream2.Length < 272L)
{
class889_2.vmethod_13(memoryStream2.Length);
}
else
{
if (memoryStream2.Length != 272L)
{
throw new Exception();
}
class889_2.vmethod_13(-272L);
}
memoryStream4.Write(memoryStream2.GetBuffer(), 0, (int)memoryStream2.Length);
uint num4 = Class746.class746_0.K * 3U;
uint length = (uint)class889_2.Stream.Length;
uint num5 = (uint)((ulong)(uint)((int)length + 8 - 1) & 18446744073709551608UL);
uint paddingSize1 = num5 - length;
this.method_25((Stream)memoryStream4, paddingSize1);
uint num6 = num4 / num5;
for (int index = 1; (long)index < (long)num6; ++index)
{
memoryStream4.Write(memoryStream4.GetBuffer(), 0, (int)num5);
}
uint paddingSize2 = num4 - (uint)memoryStream4.Length;
this.method_25((Stream)memoryStream4, paddingSize2);
byte[] buffer = new byte[1024];
fixed(byte *source = memoryStream4.GetBuffer())
fixed(byte *destination = buffer)
{
this.method_28(destination, source, (int)num4, Class746.class746_0);
this.method_24(destination + 765, 259U);
}
MemoryStream memoryStream5 = new MemoryStream(buffer, true);
memoryStream5.Position = memoryStream5.Length - 40L;
class888.Write((Stream)memoryStream5);
if (memoryStream5.Length != 1024L)
{
throw new Exception();
}
this.stream_0.Write(buffer, 0, buffer.Length);
this.stream_0.Position = 128L;
this.stream_0.Write(buffer, 0, buffer.Length);
}