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 void method_25(Stream pageHeaderStream, Class617 section, Class616 page, int pageType)
{
Class889 class889 = Class889.Create(pageHeaderStream, this.dxfVersion_0, this.encoding_0);
class889.vmethod_9(pageType);
class889.vmethod_9(section.SectionId);
class889.vmethod_9(page.CompressedSize);
class889.vmethod_9(page.PageSize);
class889.vmethod_13((long)page.StartOffset);
class889.vmethod_11(page.HeaderChecksum);
class889.vmethod_11(page.DataChecksum);
}
private void method_18()
{
this.class442_0.StreamOffset = 0UL;
ulong pageSize = this.method_19(this.list_1.Count);
long num1 = (long)(this.list_1.Count + 1 + 2);
if (pageSize <= 1024UL)
{
Class441 class441 = this.list_1[0];
long num2 = num1;
long num3 = num2 + 1L;
class441.Id = num2;
this.list_1[1].Id = num3;
this.class954_0.PagesMapId = (ulong)this.list_1[0].Id;
this.class954_0.PagesMapOffset = this.list_1[0].StreamOffset;
this.class954_0.PagesMap2Id = (ulong)this.list_1[1].Id;
this.class954_0.PagesMap2Offset = this.list_1[1].StreamOffset;
}
else
{
Class441 class441_1 = this.list_1[0];
long num2 = num1;
long num3 = num2 + 1L;
long num4 = -num2;
class441_1.Id = num4;
Class441 class441_2 = this.list_1[1];
long num5 = num3;
long num6 = num5 + 1L;
long num7 = -num5;
class441_2.Id = num7;
uint num8 = (uint)(this.stream_0.Position - 1152L);
Class442 class442_1 = new Class442();
Class442 class442_2 = class442_1;
long num9 = num6;
long num10 = num9 + 1L;
class442_2.Id = num9;
class442_1.StreamOffset = (ulong)(num8 - 1152U);
this.list_1.Add((Class441)class442_1);
Class442 class442_3 = new Class442();
class442_3.Id = num10;
class442_3.StreamOffset = (ulong)((long)num8 + (long)pageSize - 1152L);
this.list_1.Add((Class441)class442_3);
}
this.class954_0.PagesMaxId = 0UL;
this.class954_0.PageCount = (ulong)(uint)this.list_1.Count;
this.class954_0.PagesMapOffset = this.class442_0.StreamOffset;
MemoryStream sectionStream = new MemoryStream();
Class889 class889 = Class889.Create((Stream)sectionStream, this.dxfVersion_0, this.encoding_0);
foreach (Class441 class441 in this.list_1)
{
if (class441 != null)
{
class889.vmethod_13(class441.Length);
class889.vmethod_13(class441.Id);
if (class441.Id > (long)this.class954_0.PagesMaxId)
{
this.class954_0.PagesMaxId = (ulong)class441.Id;
}
}
}
byte[] pageData;
this.method_20(this.class442_0, sectionStream, this.class954_0.PagesMapCrcSeed, pageSize, out pageData);
this.class442_0.Length = (long)pageData.Length;
long id = this.class442_1.Id;
this.class442_1.CopyFrom(this.class442_0);
this.class442_1.Id = id;
this.class442_1.StreamOffset = 1024UL;
this.stream_0.Position = (long)this.class954_0.PagesMapOffset + 1152L;
this.stream_0.Write(pageData, 0, pageData.Length);
this.stream_0.Position = (long)this.class954_0.PagesMap2Offset + 1152L;
this.stream_0.Write(pageData, 0, pageData.Length);
this.class954_0.PagesMapDataRepeatCount = this.class442_0.DataRepeatCount;
this.class954_0.PagesMapSizeCompressed = this.class442_0.CompressedSize;
this.class954_0.PagesMapSizeDecompressed = this.class442_0.DecompressedSize;
this.class954_0.PagesMapCrcCompressed = this.class442_0.CompressedCrc;
this.class954_0.PagesMapCrcDecompressed = this.class442_0.DecompressedCrc;
}
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);
}
