Source2Roblox/Roblox-File-Format
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Brought spec up to date, improvements to stability

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CloneTrooper1019
2020-07-12 20:19:30 -05:00
parent 7359b6efb7
commit 57fd3f8a25
29 changed files with 551 additions and 245 deletions
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44
BinaryFormat/Chunks/SSTR.cs
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@ -6,56 +6,54 @@ namespace RobloxFiles.BinaryFormat.Chunks
{
public class SSTR : IBinaryFileChunk
{
public int Version;
public int NumHashes;
private const int FORMAT = 0;
public Dictionary<string, uint> Lookup = new Dictionary<string, uint>();
public Dictionary<uint, SharedString> Strings = new Dictionary<uint, SharedString>();
internal Dictionary<string, uint> Lookup = new Dictionary<string, uint>();
internal Dictionary<uint, SharedString> Strings = new Dictionary<uint, SharedString>();
public void LoadFromReader(BinaryRobloxFileReader reader)
public void Load(BinaryRobloxFileReader reader)
{
BinaryRobloxFile file = reader.File;
Version = reader.ReadInt32();
NumHashes = reader.ReadInt32();
int format = reader.ReadInt32();
int numHashes = reader.ReadInt32();
for (uint id = 0; id < NumHashes; id++)
if (format != FORMAT)
throw new Exception($"Unexpected SSTR format: {format} (expected {FORMAT}!)");
for (uint id = 0; id < numHashes; id++)
{
byte[] md5 = reader.ReadBytes(16);
int length = reader.ReadInt32();
byte[] data = reader.ReadBytes(length);
byte[] hash = reader.ReadBytes(16);
string key = Convert.ToBase64String(hash);
byte[] data = reader.ReadBuffer();
SharedString value = SharedString.FromBuffer(data);
Lookup.Add(value.MD5_Key, id);
Lookup.Add(key, id);
Strings.Add(id, value);
}
file.SSTR = this;
}
public BinaryRobloxFileChunk SaveAsChunk(BinaryRobloxFileWriter writer)
public void Save(BinaryRobloxFileWriter writer)
{
writer.StartWritingChunk(this);
writer.Write(Version);
writer.Write(NumHashes);
writer.Write(FORMAT);
writer.Write(Lookup.Count);
foreach (var pair in Lookup)
{
string key = pair.Key;
byte[] md5 = Convert.FromBase64String(key);
writer.Write(md5);
byte[] hash = Convert.FromBase64String(key);
writer.Write(hash);
SharedString value = Strings[pair.Value];
byte[] buffer = SharedString.FindRecord(value.MD5_Key);
byte[] buffer = SharedString.Find(value.Key);
writer.Write(buffer.Length);
writer.Write(buffer);
}
return writer.FinishWritingChunk();
}
}
}