using System.Text.RegularExpressions;

using System.Threading.Tasks;

namespace SourceGit.Commands

{

public partial class MergeBase : Command

{

[GeneratedRegex(@"^[0-9a-f]{8,64}$")]

private static partial Regex REG_HEX();

public MergeBase(string repo, string rev1, string rev2)

{

WorkingDirectory = repo;

Context = repo;

RaiseError = false;

Args = $"merge-base {rev1} {rev2}";

}

public async Task<string> GetResultAsync()

{

var rs = await ReadToEndAsync().ConfigureAwait(false);

if (!rs.IsSuccess)

return string.Empty;

var trimmed = rs.StdOut.Trim();

if (REG_HEX().IsMatch(trimmed))

return trimmed;

return string.Empty;

}

}

}