public void GuidThingTest()
{
var guid = new Guid("f918382f-2bba-453f-a3e2-1f594016ed3b");
Assert.AreEqual("f22br4n0fm5fli5c", GuidUtils.ToBase32String(guid, 16));
Assert.AreEqual("f22br4n0f", GuidUtils.ToBase32String(guid, 9));
}
public static string CreateShadowId()
{
const int retries = 50; // avoid infinite loop
const int idLength = 8; // 6 chars
// shorten a Guid to idLength chars, and see whether it collides
// with an existing directory or not - if it does, try again, and
// we should end up with a unique identifier eventually - but just
// detect infinite loops (just in case)
for (var i = 0; i < retries; i++)
{
var id = GuidUtils.ToBase32String(Guid.NewGuid(), idLength);
var virt = ShadowFsPath + "/" + id;
var shadowDir = IOHelper.MapPath(virt);
if (Directory.Exists(shadowDir))
{
continue;
}
Directory.CreateDirectory(shadowDir);
return(id);
}
throw new Exception($"Could not get a shadow identifier (tried {retries} times)");
}
/// <inheritdoc />
public string GetFilePath(MediaFileManager fileManager, Guid itemGuid, Guid propertyGuid, string filename)
{
var combinedGuid = GuidUtils.Combine(itemGuid, propertyGuid);
var directory = GuidUtils.ToBase32String(combinedGuid, DirectoryLength);
return(Path.Combine(directory, filename).Replace('\\', '/'));
}
/// <inheritdoc />
public string GetFilePath(IMediaFileSystem fileSystem, Guid itemGuid, Guid propertyGuid, string filename, string previous = null)
{
var combinedGuid = GuidUtils.Combine(itemGuid, propertyGuid);
var directory = GuidUtils.ToBase32String(combinedGuid, DirectoryLength);
return(Path.Combine(directory, filename).Replace('\\', '/'));
}