/// <summary>
/// Creates a direct or symbolic reference with the specified name and target
/// </summary>
/// <param name="refsColl">The <see cref="ReferenceCollection"/> being worked with.</param>
/// <param name="name">The name of the reference to create.</param>
/// <param name="canonicalRefNameOrObjectish">The target which can be either the canonical name of a reference or a revparse spec.</param>
/// <param name="signature">The identity used for updating the reflog</param>
/// <param name="logMessage">The optional message to log in the <see cref="ReflogCollection"/> when adding the <see cref="Reference"/></param>
/// <param name="allowOverwrite">True to allow silent overwriting a potentially existing reference, false otherwise.</param>
/// <returns>A new <see cref="Reference"/>.</returns>
public static Reference Add(this ReferenceCollection refsColl, string name, string canonicalRefNameOrObjectish, Signature signature, string logMessage, bool allowOverwrite = false)
{
Ensure.ArgumentNotNullOrEmptyString(name, "name");
Ensure.ArgumentNotNullOrEmptyString(canonicalRefNameOrObjectish, "canonicalRefNameOrObjectish");
Reference reference;
RefState refState = TryResolveReference(out reference, refsColl, canonicalRefNameOrObjectish);
var gitObject = refsColl.repo.Lookup(canonicalRefNameOrObjectish, GitObjectType.Any, LookUpOptions.None);
if (refState == RefState.Exists)
{
return(refsColl.Add(name, reference, signature, logMessage, allowOverwrite));
}
if (refState == RefState.DoesNotExistButLooksValid && gitObject == null)
{
using (ReferenceSafeHandle handle = Proxy.git_reference_symbolic_create(refsColl.repo.Handle, name, canonicalRefNameOrObjectish, allowOverwrite,
signature.OrDefault(refsColl.repo.Config), logMessage))
{
return(Reference.BuildFromPtr <Reference>(handle, refsColl.repo));
}
}
Ensure.GitObjectIsNotNull(gitObject, canonicalRefNameOrObjectish);
if (logMessage == null)
{
logMessage = string.Format(CultureInfo.InvariantCulture, "{0}: Created from {1}",
name.LooksLikeLocalBranch() ? "branch" : "reference", canonicalRefNameOrObjectish);
}
refsColl.EnsureHasLog(name);
return(refsColl.Add(name, gitObject.Id, signature, logMessage, allowOverwrite));
}
/// <summary>
/// Creates a direct or symbolic reference with the specified name and target
/// </summary>
/// <param name="name">The name of the reference to create.</param>
/// <param name="canonicalRefNameOrObjectish">The target which can be either the canonical name of a reference or a revparse spec.</param>
/// <param name="allowOverwrite">True to allow silent overwriting a potentially existing reference, false otherwise.</param>
/// <param name="refsColl">The <see cref="ReferenceCollection"/> being worked with.</param>
/// <param name="logMessage">The optional message to log in the <see cref="ReflogCollection"/> when adding the <see cref="Reference"/></param>
/// <returns>A new <see cref="Reference"/>.</returns>
public static Reference Add(this ReferenceCollection refsColl, string name, string canonicalRefNameOrObjectish, bool allowOverwrite = false, string logMessage = null)
{
Ensure.ArgumentNotNullOrEmptyString(name, "name");
Ensure.ArgumentNotNullOrEmptyString(canonicalRefNameOrObjectish, "canonicalRefNameOrObjectish");
Reference reference;
RefState refState = TryResolveReference(out reference, refsColl, canonicalRefNameOrObjectish);
var gitObject = refsColl.repo.Lookup(canonicalRefNameOrObjectish, GitObjectType.Any, LookUpOptions.None);
if (refState == RefState.Exists)
{
return(refsColl.Add(name, reference, allowOverwrite, logMessage));
}
if (refState == RefState.DoesNotExistButLooksValid && gitObject == null)
{
using (ReferenceSafeHandle handle = Proxy.git_reference_symbolic_create(refsColl.repo.Handle, name, canonicalRefNameOrObjectish, allowOverwrite))
{
return(Reference.BuildFromPtr <Reference>(handle, refsColl.repo));
}
}
Ensure.GitObjectIsNotNull(gitObject, canonicalRefNameOrObjectish);
return(refsColl.Add(name, gitObject.Id, allowOverwrite, logMessage));
}
/// <summary>
/// Updates the target of a reference.
/// </summary>
/// <param name = "name">The canonical name of the reference.</param>
/// <param name = "canonicalRefNameOrObjectish">The target which can be either the canonical name of a reference or a revparse spec.</param>
/// <param name = "refsColl">The <see cref="ReferenceCollection"/> being worked with.</param>
/// <param name="logMessage">The optional message to log in the <see cref="ReflogCollection"/> of the <paramref name="name"/> reference.</param>
/// <returns>A new <see cref = "Reference" />.</returns>
public static Reference UpdateTarget(this ReferenceCollection refsColl, string name, string canonicalRefNameOrObjectish, string logMessage = null)
{
Ensure.ArgumentNotNullOrEmptyString(name, "name");
Ensure.ArgumentNotNullOrEmptyString(canonicalRefNameOrObjectish, "canonicalRefNameOrObjectish");
if (name == "HEAD")
{
return refsColl.Add("HEAD", canonicalRefNameOrObjectish, true);
}
Reference reference = refsColl[name];
var directReference = reference as DirectReference;
if (directReference != null)
{
return refsColl.UpdateTarget(directReference, canonicalRefNameOrObjectish, logMessage);
}
var symbolicReference = reference as SymbolicReference;
if (symbolicReference != null)
{
Reference targetRef;
RefState refState = TryResolveReference(out targetRef, refsColl, canonicalRefNameOrObjectish);
if (refState == RefState.DoesNotLookValid)
{
throw new ArgumentException(String.Format(CultureInfo.InvariantCulture, "The reference specified by {0} is a Symbolic reference, you must provide a reference canonical name as the target.", name), "canonicalRefNameOrObjectish");
}
return refsColl.UpdateTarget(symbolicReference, targetRef, logMessage);
}
throw new LibGit2SharpException(string.Format(CultureInfo.InvariantCulture, "Reference '{0}' has an unexpected type ('{1}').", name, reference.GetType()));
}