/// <summary>
/// Get hash of a local file. Exception if it doesn't exist.
/// </summary>
/// <param name="path">Relative path. Using forward slashes, starting with a forward slash, and in lower case.</param>
/// <param name="cancellationToken"></param>
/// <returns></returns>
public async Task <FileHash> GetFileHash(string path, CancellationToken cancellationToken)
{
ModUtil.CheckPath(path);
var extension = Utils.GetExtension(path).ToLowerInvariant();
var file = await OpenRead(path, cancellationToken);
if (file == null)
{
throw new FileNotFoundException(path);
}
return(await Sha1AndPboHash.BuildAsync(file, extension, cancellationToken));
}
// TODO: use more specialized interface to get files
public static async Task <VersionHash> CreateAsync(IStorageMod mod, CancellationToken cancellationToken)
{
var hashes = new Dictionary <string, FileHash>();
foreach (var file in await mod.GetFileList(cancellationToken))
{
var stream = await mod.OpenRead(file, cancellationToken);
if (stream == null)
{
throw new InvalidOperationException();
}
var hash = await Sha1AndPboHash.BuildAsync(stream, Utils.GetExtension(file), cancellationToken);
hashes.Add(file, hash);
}
return(new VersionHash(BuildHash(hashes)));
}