public void Checkout(SessionOutput output, string refspec = "master")
{
var checkoutOptions = new CheckoutOptions {
CheckoutModifiers = CheckoutModifiers.Force,
};
// Clone repository if it does not exist
if (!Repository.IsValid(Source.RepositoryPath))
{
output.WriteLine("Cloning Repository...", ConsoleColor.DarkCyan);
var cloneOptions = new CloneOptions();
cloneOptions.CredentialsProvider += CredentialsProvider;
Repository.Clone(Source.RepositoryUrl, Source.RepositoryPath, cloneOptions);
}
using (var repo = new Repository(Source.RepositoryPath)) {
// Fetch all updated refspecs and tags
output.WriteLine("Fetching updated refs...", ConsoleColor.DarkCyan);
var fetchSpec = new[] { "+refs/heads/*:refs/remotes/origin/*" };
var fetchOptions = new FetchOptions {
TagFetchMode = TagFetchMode.All,
};
fetchOptions.CredentialsProvider += CredentialsProvider;
LibGit2Sharp.Commands.Fetch(repo, "origin", fetchSpec, fetchOptions, null);
// Find local and remote branches
var remoteBranchName = $"refs/remotes/origin/{refspec}";
var remoteBranch = repo.Branches[remoteBranchName];
var localBranchName = $"refs/heads/origin/{refspec}";
var localBranch = repo.Branches[localBranchName];
if (remoteBranch == null)
{
output.Write("Git Refspec ", ConsoleColor.DarkYellow)
.Write(refspec, ConsoleColor.Yellow)
.WriteLine(" was not found!", ConsoleColor.DarkYellow);
throw new ApplicationException($"Git Refspec '{refspec}' was not found!");
}
if (localBranch != null)
{
output.WriteLine($"Found local branch '{localBranch.FriendlyName}'...", ConsoleColor.DarkCyan);
// Update tracking branch if not remote branch
if (!localBranch.IsTracking || localBranch.TrackedBranch != remoteBranch)
{
output.WriteLine("Updating local branch tracking reference...", ConsoleColor.DarkCyan);
repo.Branches.Update(localBranch, b => b.TrackedBranch = remoteBranch.CanonicalName);
}
// Checkout local branch if not current
if (!localBranch.IsCurrentRepositoryHead)
{
output.WriteLine($"Checkout local branch '{localBranch.FriendlyName}'...", ConsoleColor.DarkCyan);
LibGit2Sharp.Commands.Checkout(repo, localBranch, checkoutOptions);
}
// Revert to common ancestor commit if diverged
var status = localBranch.TrackingDetails;
var aheadCount = status.AheadBy ?? 0;
if (aheadCount > 0)
{
output.WriteLine($"Local branch '{localBranch.FriendlyName}' has diverged from the remote tracking branch!", ConsoleColor.DarkYellow);
var common = status.CommonAncestor;
if (common != null)
{
output.WriteLine($"Reverting local branch to commit '{common.Sha}'!", ConsoleColor.DarkCyan);
repo.Reset(ResetMode.Hard, common, checkoutOptions);
}
}
// Pull latest changes from remote
output.WriteLine("Pull changes from remote...", ConsoleColor.DarkCyan);
var sign = new Signature("photon", "*****@*****.**", DateTimeOffset.Now);
var pullOptions = new PullOptions {
FetchOptions = fetchOptions,
};
LibGit2Sharp.Commands.Pull(repo, sign, pullOptions);
}
else
{
// Create local branch tracking remote
output.WriteLine($"No local branch found. Creating local tracking branch '{remoteBranch.FriendlyName}'...", ConsoleColor.DarkCyan);
localBranch = repo.CreateBranch(remoteBranch.FriendlyName, remoteBranch.Tip);
repo.Branches.Update(localBranch, b => b.TrackedBranch = remoteBranch.CanonicalName);
output.WriteLine($"Checkout local tracking branch '{localBranch.FriendlyName}'...", ConsoleColor.DarkCyan);
LibGit2Sharp.Commands.Checkout(repo, localBranch, checkoutOptions);
}
output.WriteLine("Current Commit:", ConsoleColor.DarkBlue)
.WriteLine($" {repo.Head.Tip.Sha}", ConsoleColor.Blue)
.WriteLine($" {repo.Head.Tip.Author?.Name}", ConsoleColor.Blue)
.WriteLine(repo.Head.Tip.Message, ConsoleColor.Cyan);
}
}
