NuGitRepository(NuGitWorkspace workspace, GitRepositoryName name)
: base(
IOPath.Combine(
Guard.NotNull(workspace, nameof(workspace)).RootPath,
Guard.NotNull(name, nameof(name))))
{
Workspace = workspace;
}
Traverse(
NuGitWorkspace workspace,
IEnumerable <Dependency> dependencies,
NuGitRepository requiredBy,
IDictionary <GitRepositoryName, GitCommitName> checkedOut,
ISet <GitRepositoryName> visited,
Action <Dependency, NuGitRepository> onVisited
)
{
Guard.NotNull(workspace, nameof(workspace));
Guard.NotNull(dependencies, nameof(dependencies));
Guard.NotNull(checkedOut, nameof(checkedOut));
Guard.NotNull(visited, nameof(visited));
Guard.NotNull(onVisited, nameof(onVisited));
var unvisited = dependencies.Where(d => !visited.Contains(d.Url.RepositoryName)).ToList().AsReadOnly();
//
// Clone any dependency repos that aren't present
//
foreach (var d in unvisited)
{
if (workspace.FindRepository(d.Url.RepositoryName) != null)
{
continue;
}
Clone(workspace.RootPath, d.Url);
}
//
// Visit each dependency
//
foreach (var d in dependencies)
{
var name = d.Url.RepositoryName;
var repo = workspace.GetRepository(name);
var commit = d.CommitName;
checkedOut.TryGetValue(name, out var checkedOutCommit);
//
// First visit wins
//
if (checkedOutCommit == null)
{
using (LogicalOperation.Start($"Restoring {d.Url.RepositoryName} to {d.CommitName}"))
{
var commitId = repo.GetCommitId(commit);
var headId = repo.GetCommitId();
var isCheckedOutToCommit = headId == commitId;
var hasUncommittedChanges = repo.HasUncommittedChanges();
if (repo.HasUncommittedChanges())
{
Trace.TraceError("Uncommitted changes");
throw new UserException($"Uncommitted changes in {name}");
}
else if (isCheckedOutToCommit)
{
Trace.TraceInformation($"Already checked out");
}
else
{
CheckOut(repo, commit);
}
checkedOut.Add(name, commit);
visited.Add(name);
onVisited(d, repo);
continue;
}
}
//
// Subsequent visits specifying different commits get a warning
//
if (commit != checkedOutCommit)
{
Trace.TraceWarning(
StringExtensions.FormatInvariant(
"{0} depends on {1}#{2} but #{3} has already been checked out",
requiredBy.Name,
name,
commit,
checkedOutCommit));
continue;
}
//
// Subsequent visits specifying the same commit do nothing
//
}
//
// Recurse
//
foreach (var d in unvisited)
{
var name = d.Url.RepositoryName;
var repo = workspace.FindRepository(name);
Traverse(
workspace,
repo.ReadDotNuGit().Dependencies,
repo,
checkedOut,
visited,
onVisited);
}
}