public static string ReadCString(uint offset, BlamLib.IO.EndianReader io)
{
if (offset == 0)
{
return(string.Empty);
}
uint pos = io.PositionUnsigned;
io.Seek(offset);
byte btchar = 0;
var cstring = new System.Text.StringBuilder();
do
{
btchar = io.ReadByte();
if (btchar != 0)
{
cstring.Append((char)btchar);
}
} while (btchar != 0);
io.Seek(pos);
return(cstring.ToString());
}
public override void Read(BlamLib.IO.EndianReader s)
{
bool is_beta = false;
bool is_odst = !((s.Owner as Blam.CacheFile).EngineVersion == BlamVersion.Halo3);
Blam.CacheFile.ValidateHeader(s, kSizeOf);
s.Seek(4);
version = s.ReadInt32(); is_beta = version == 9;
if (version != 9 && version != 11)
{
throw new InvalidCacheFileException(s.FileName);
}
fileLength = s.ReadInt32();
s.ReadInt32();
tagIndexAddress = s.ReadUInt32();
memoryBufferOffset = s.ReadInt32();
memoryBufferSize = s.ReadInt32();
sourceFile = s.ReadAsciiString(256);
build = s.ReadTagString();
cacheType = (Blam.CacheType)s.ReadInt16();
if (is_beta)
{
s.ReadInt16(); sharedType = Cache.SharedType.Beta;
ReadBeta(s);
return;
}
else
{
sharedType = (Cache.SharedType)s.ReadInt16();
}
s.ReadBool();
s.ReadBool(); // false if it belongs to a untracked build
s.ReadBool();
s.ReadByte(); // appears to be an ODST-only field
s.ReadInt32(); s.ReadInt32();
s.ReadInt32(); s.ReadInt32(); s.ReadInt32();
#region string id table
// 0x158
// old 128 byte aligned string table not used after the Delta builds of Halo 3
stringIdsCount = s.ReadInt32();
stringIdsBufferSize = s.ReadInt32(); // cstring buffer total size in bytes
stringIdIndicesOffset = s.ReadInt32();
stringIdsBufferOffset = s.ReadInt32(); // cstring buffer
#endregion
#region filetimes?
// pretty sure this is a flags field
// used to tell which of the following 64bit values
// are used. Damn sure this are FILETIME structures, but
// hex workshop doesn't like them so I can't be for sure...
needsShared = s.ReadInt32() != 0; // just a little 'hack' if you will. if zero, the map is self reliant, so no worries
Filetime.dwHighDateTime = s.ReadInt32();
Filetime.dwLowDateTime = s.ReadInt32();
if (s.ReadInt32() != 0)
{
flags.Add(CacheHeaderFlags.DependsOnMainMenu);
}
s.ReadInt32();
if (s.ReadInt32() != 0)
{
flags.Add(CacheHeaderFlags.DependsOnShared);
}
s.ReadInt32();
if (s.ReadInt32() != 0)
{
flags.Add(CacheHeaderFlags.DependsOnCampaign);
}
s.ReadInt32();
#endregion
name = s.ReadTagString();
s.ReadInt32();
scenarioPath = s.ReadAsciiString(256);
s.ReadInt32(); // minor version, normally not used
#region tag names
tagNamesCount = s.ReadInt32();
tagNamesBufferOffset = s.ReadInt32(); // cstring buffer
tagNamesBufferSize = s.ReadInt32(); // cstring buffer total size in bytes
tagNameIndicesOffset = s.ReadInt32();
#endregion
checksum = s.ReadUInt32(); // 0x2C4
s.Seek(32, System.IO.SeekOrigin.Current); // these bytes are always the same
baseAddress = s.ReadUInt32(); // expected base address
xdkVersion = s.ReadInt32(); // xdk version
#region memory partitions
// 0x2E8
// memory partitions
memoryPartitions = new Partition[6];
memoryPartitions[0].BaseAddress = s.ReadUInt32(); // cache resource buffer
memoryPartitions[0].Size = s.ReadInt32();
// readonly
memoryPartitions[1].BaseAddress = s.ReadUInt32(); // sound cache resource buffer
memoryPartitions[1].Size = s.ReadInt32();
memoryPartitions[2].BaseAddress = s.ReadUInt32(); // global tags buffer
memoryPartitions[2].Size = s.ReadInt32();
memoryPartitions[3].BaseAddress = s.ReadUInt32(); // shared tag blocks?
memoryPartitions[3].Size = s.ReadInt32();
memoryPartitions[4].BaseAddress = s.ReadUInt32(); // address
memoryPartitions[4].Size = s.ReadInt32();
// readonly
memoryPartitions[5].BaseAddress = s.ReadUInt32(); // map tags buffer
memoryPartitions[5].Size = s.ReadInt32();
#endregion
int count = s.ReadInt32();
s.Seek(12, System.IO.SeekOrigin.Current); // these bytes are always the same
// if there is a hash in the header, this is the ONLY
// place where it can be
s.Seek(20 /*SHA1*/ + 40 + 256 /*RSA*/, System.IO.SeekOrigin.Current); // ???
// 0x46C
cacheInterop.Read(s);
cacheInterop.PostprocessForCacheRead(kSizeOf);
s.Seek(16, System.IO.SeekOrigin.Current); // GUID?, these bytes are always the same. ODST is different from Halo 3
#region blah 1
// 0x4AC
// campaign has a shit load of these
// but shared doesn't nor mainmenu
// I compared the sc110 french and english and both have the SAME counts and element data. So
// I don't think this is a hash or something. At least, if it is, it's not runtime relative so
// nothing we have to worry about
s.ReadInt16(); // I've only seen this be two different values (besides zero).
count = s.ReadInt16();
s.ReadInt32(); // seems to always be zero
CompressionGuid = new Guid(s.ReadBytes(16));
s.Seek(count * 28, System.IO.SeekOrigin.Current); // seek past the elements
// dword
// long
// buffer [0x14] (probably a sha1 hash)
s.Seek((320 - count) * 28, System.IO.SeekOrigin.Current); // seek past the unused elements
#endregion
#region blah 2
{
// 0x27C4
// This on the other hand, sc110 french and english had MINOR differences. Those differences were in
// DWORDs @ 0x4 and 0x8
// 005 - 1
// 010 - 3
// 020 - 3
// 030 - 2
// 040 - 2
// 050 - 2
// 070 - 3
// 100 - 3
// 110 - 2
// 120 - 2
// 130 - 1
// c100 - 1
// c200 - 1
// h100 - 9
// l200 - 7
// l300 - 8
// sc100 - 5
// sc110 - 5
// sc120 - 6
// sc130 - 6
// sc140 - 6
// sc150 - 6
// going to punt and just assume there is a max count of 10 of these possible
// maybe related to bsp\'zones'?
int blah2_sizeof = !is_odst ? 172 : 180;
count = (int)(s.ReadUInt32() >> 24); // did someone forget to f*****g byte swap something?
s.Seek(count * blah2_sizeof, System.IO.SeekOrigin.Current); // seek past the elements
s.Seek((10 - count) * blah2_sizeof, System.IO.SeekOrigin.Current); // seek past the unused elements
}
#endregion
s.Seek((!is_odst ? 380 : 300) + sizeof(uint), System.IO.SeekOrigin.Current); // zero
ReadPostprocessForInterop();
ReadPostprocessForBaseAddresses(s);
}
public void Read(BlamLib.IO.EndianReader s)
{
X = s.ReadByte();
Y = s.ReadByte();
Z = s.ReadByte();
}
public void Read(BlamLib.IO.EndianReader s)
{
Value = s.ReadByte();
}
public void Read(BlamLib.IO.EndianReader s)
{
type = (FieldType)s.ReadByte();
flags = s.ReadInt32();
}