private static void BuildMasterPatch(string esm, ILookup <string, string> knownEsmVersions)
{
var fixPath = Path.Combine(OutDir, Path.ChangeExtension(esm, ".pat"));
if (File.Exists(fixPath))
{
return;
}
var ttwESM = Path.Combine(_dirTTWMain, esm);
var ttwBytes = File.ReadAllBytes(ttwESM);
var ttwChk = new FileValidation(ttwBytes);
var altVersions = knownEsmVersions[esm].ToList();
var patches =
altVersions.Select(dataESM =>
{
var dataBytes = File.ReadAllBytes(dataESM);
byte[] patchBytes;
using (var msPatch = new MemoryStream())
{
MakeDiff.Create(dataBytes, ttwBytes, Diff.SIG_LZDIFF41, msPatch);
patchBytes = msPatch.ToArray();
}
return(new PatchInfo
{
Metadata = new FileValidation(dataESM),
Data = patchBytes
});
})
.AsParallel()
.ToArray();
var patchDict = new PatchDict(altVersions.Count);
patchDict.Add(esm, new Patch(ttwChk, patches));
using (var fixStream = File.OpenWrite(fixPath))
patchDict.WriteAll(fixStream);
}
static unsafe byte[] GetDiff(string diffPath, long convertSignature = -1, bool moveToUsed = false)
{
if (File.Exists(diffPath))
{
try
{
var diffBytes = File.ReadAllBytes(diffPath);
if (convertSignature > 0)
fixed(byte *pBz2 = diffBytes)
return(MakeDiff.ConvertPatch(pBz2, diffBytes.Length, Diff.SIG_BSDIFF40, convertSignature));
return(diffBytes);
}
finally
{
if (moveToUsed)
{
File.Move(diffPath, Path.ChangeExtension(diffPath, ".used"));
}
}
}
return(null);
}