public AssetStream(PackedAssetBundle bundle, string path)
{
this.bundle = bundle;
if (!bundle.index.TryGetValue(AssetPath.CorrectSlashes(path), out descriptor))
{
throw new Exception("Can't open asset: {0}", path);
}
stream = bundle.AllocStream();
Seek(0, SeekOrigin.Begin);
}
public void ApplyPatch(PackedAssetBundle patchBundle)
{
var manifest = Manifest.Create(this);
var patchManifest = Manifest.Create(patchBundle);
if (patchManifest.BaseBundleVersion.HasValue)
{
if (manifest.BundleVersion.HasValue && patchManifest.BaseBundleVersion != manifest.BundleVersion)
{
throw new InvalidOperationException("Patch base version should be equal patched bundle version");
}
else if (patchManifest.BundleVersion.HasValue)
{
manifest.BundleVersion = patchManifest.BundleVersion;
}
}
foreach (var file in patchBundle.EnumerateFiles())
{
manifest.DeletedAssets.Remove(file);
if (FileExists(file))
{
DeleteFile(file);
}
using (var stream = patchBundle.OpenFileRaw(file)) {
ImportFileRaw(
file, stream, 0,
patchBundle.GetSourceExtension(file),
patchBundle.GetFileLastWriteTime(file),
patchBundle.GetAttributes(file),
patchBundle.GetCookingRulesSHA1(file)
);
}
}
foreach (var file in patchManifest.DeletedAssets)
{
if (FileExists(file))
{
DeleteFile(file);
if (!manifest.DeletedAssets.Contains(file))
{
manifest.DeletedAssets.Add(file);
}
}
}
manifest.Write(this);
}