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_16()
{
MemoryStream sectionStream = new MemoryStream();
Class889 byteStream = Class889.Create((Stream)sectionStream, this.dxfVersion_0, this.encoding_0);
foreach (Class504 section in this.list_0)
{
if (section.DataSize != 0UL)
{
this.method_17(section, byteStream);
}
}
if (this.dxfVersion_0 == DxfVersion.Dxf21)
{
this.method_17(new Class504()
{
HashCode = 0UL,
MaxDecompressedPageSize = 63488UL,
Encrypted = 0UL,
Encoding = 4UL
}, byteStream);
}
Class442 page = new Class442();
ulong pageSize = Class996.smethod_2((ulong)sectionStream.Length);
byte[] pageData;
this.method_20(page, sectionStream, this.class954_0.SectionsMapCrcSeed, pageSize, out pageData);
Class442 class442 = (Class442)page.Clone();
this.method_23((Class441)page, pageData, 0, pageData.Length);
this.method_23((Class441)class442, pageData, 0, pageData.Length);
this.class954_0.SectionsMapDataRepeatCount = page.DataRepeatCount;
this.class954_0.SectionsMapSizeCompressed = page.CompressedSize;
this.class954_0.SectionsMapSizeDecompressed = page.DecompressedSize;
this.class954_0.SectionsMapCrcCompressed = page.CompressedCrc;
this.class954_0.SectionsMapCrcDecompressed = page.DecompressedCrc;
this.class954_0.SectionsMapId = (ulong)page.Id;
this.class954_0.SectionsMap2Id = (ulong)class442.Id;
}
public static void Read(Class889 reader, DxfModel model)
{
reader.vmethod_8();
int num1 = (int)reader.vmethod_10();
if (model.Header.AcadVersion >= DxfVersion.Dxf15)
{
reader.vmethod_26();
}
else
{
reader.vmethod_26();
}
int num2 = (int)reader.vmethod_10();
byte num3 = reader.vmethod_0();
for (int index = 0; index < (int)num3; ++index)
{
int num4 = (int)reader.vmethod_10();
int num5 = (int)reader.vmethod_10();
}
}
public static void Write(Class889 byteStream, SummaryInfo summaryInfo)
{
byteStream.vmethod_19(summaryInfo.Title);
byteStream.vmethod_19(summaryInfo.Subject);
byteStream.vmethod_19(summaryInfo.Author);
byteStream.vmethod_19(summaryInfo.Keywords);
byteStream.vmethod_19(summaryInfo.Comments);
byteStream.vmethod_19(summaryInfo.LastSavedBy);
byteStream.vmethod_19(summaryInfo.RevisionNumber);
byteStream.vmethod_19(summaryInfo.HyperLinkBase);
byteStream.vmethod_25(summaryInfo.TotalEditingTime);
byteStream.vmethod_27(summaryInfo.CreationDateTime);
byteStream.vmethod_27(summaryInfo.ModifiedDateTime);
byteStream.vmethod_7((ushort)summaryInfo.Properties.Count);
foreach (SummaryInfo.Property property in summaryInfo.Properties)
{
byteStream.vmethod_19(property.Name);
byteStream.vmethod_19(property.Value);
}
byteStream.vmethod_9(0);
byteStream.vmethod_9(0);
}
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_5()
{
this.memoryStream_7 = new MemoryStream();
Class501.Write(Class889.Create((Stream)this.memoryStream_7, this.dxfVersion_0, this.encoding_0), this.dxfModel_0);
this.class723_6.Stream = this.memoryStream_7;
}
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 void method_14()
{
Class501.Write(Class889.Create((Stream)this.class504_7.Stream, this.dxfVersion_0, this.encoding_0), this.dxfModel_0);
}
private void method_13()
{
Class612.Write(Class889.Create((Stream)this.class504_6.Stream, this.dxfVersion_0, this.encoding_0), this.dxfModel_0, (uint)this.list_2.Count, 0U);
}
private void method_9()
{
Class889.Create((Stream)this.class504_1.Stream, this.dxfVersion_0, this.encoding_0);
Class885.smethod_0(new Class949(), (Stream)this.class504_1.Stream, this.encoding_0);
}
private void method_4()
{
Class611.Write(Class889.Create((Stream)this.class504_3.Stream, this.dxfVersion_0, this.encoding_0), this.dxfModel_0.SummaryInfo);
}
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);
}
public static void smethod_0(Class949 appInfo, Stream stream, Encoding encoding)
{
Class889 byteStream = Class889.Create(stream, DxfVersion.Dxf21, Encoding.Unicode);
Class921.smethod_0(appInfo, byteStream);
}
public static void Write(Class889 stream, DxfModel model)
{
stream.vmethod_5((short)0);
stream.vmethod_7((ushort)model.Header.MeasurementUnits);
}
private void method_5()
{
this.memoryStream_2 = new MemoryStream();
Class501.Write(Class889.Create((Stream)this.memoryStream_2, this.dxfVersion_0, this.encoding_0), this.dxfModel_0);
}
