/*
* Query if given packed file can be deccoded.
* Is not entirely reliable because it only reads the header and checks if a
* type definition is available for the given GUID and/or type name and version.
* The actual decode tries out all available type infos for that type name
* but that is less efficient because it has to read the whole file at least once
* if successful.
*/
public static bool CanDecode(PackedFile packedFile, out string display)
{
bool result = true;
string key = DBFile.Typename(packedFile.FullPath);
if (DBTypeMap.Instance.IsSupported(key))
{
try {
DBFileHeader header = PackedFileDbCodec.readHeader(packedFile);
int maxVersion = DBTypeMap.Instance.MaxVersion(key);
if (maxVersion != 0 && header.Version > maxVersion)
{
display = string.Format("{0}: needs {1}, has {2}", key, header.Version, DBTypeMap.Instance.MaxVersion(key));
result = false;
}
else
{
display = string.Format("Version: {0}", header.Version);
}
} catch (Exception x) {
display = string.Format("{0}: {1}", key, x.Message);
}
}
else
{
display = string.Format("{0}: no definition available", key);
result = false;
}
return(result);
}
/*
* Create DBFile from the given PackedFile.
*/
public static DBFile Decode(PackedFile file)
{
PackedFileDbCodec codec = FromFilename(file.FullPath);
return(codec.Decode(file.Data));
}