/// <summary>
/// Parses a VFS cas relative path to extract file placement data
/// </summary>
public static bool TryParseCasRelativePath(string casRelativePath, out VfsFilePlacementData data)
{
data = default;
var parts = casRelativePath.Split(PathSplitChars);
if (parts.Length != 3)
{
return(false);
}
if (Enum.TryParse <HashType>(parts[0], ignoreCase: true, out var hashType))
{
try
{
var fileName = Path.GetFileNameWithoutExtension(parts[2]);
var fileNameParts = fileName.Split(FilePlacementInfoFileNameSplitChars);
if (fileNameParts.Length != 4)
{
return(false);
}
var hash = new ContentHash(hashType, HexUtilities.HexToBytes(fileNameParts[0]));
if (Enum.TryParse <FileRealizationMode>(fileNameParts[1], out var realizationMode) &&
Enum.TryParse <FileAccessMode>(fileNameParts[2], out var accessMode))
{
data = new VfsFilePlacementData(hash, realizationMode, accessMode);
return(true);
}
}
catch (Exception ex)
{
new ErrorResult(ex).IgnoreFailure();
return(false);
}
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Creates a CAS relative path for the given placement data
/// </summary>
public static string CreateCasRelativePath(VfsFilePlacementData data, int nodeIndex)
{
var hashHex = data.Hash.ToHex();
return($@"{data.Hash.HashType}\{hashHex.Substring(0, 3)}\{hashHex}-{data.RealizationMode}-{data.AccessMode}-{nodeIndex}.blob");
}
