private ObjectId DereferenceToCommit(string identifier)
{
// TODO: Should we check the type? Git-log allows TagAnnotation oid as parameter. But what about Blobs and Trees?
GitObject commit = repo.Lookup(identifier, GitObjectType.Any, LookUpOptions.ThrowWhenNoGitObjectHasBeenFound | LookUpOptions.DereferenceResultToCommit);
return(commit != null ? commit.Id : null);
}
private static Commit LookUpCommit(IRepository repository, string committish)
{
GitObject obj = repository.Lookup(committish);
Ensure.GitObjectIsNotNull(obj, committish);
return(obj.DereferenceToCommit(true));
}
/// <summary>
/// Sets the current <see cref="Head"/> to the specified commit and optionally resets the <see cref="Index"/> and
/// the content of the working tree to match.
/// </summary>
/// <param name = "resetOptions">Flavor of reset operation to perform.</param>
/// <param name = "shaOrReferenceName">The sha or reference canonical name of the target commit object.</param>
public void Reset(ResetOptions resetOptions, string shaOrReferenceName)
{
Ensure.ArgumentNotNullOrEmptyString(shaOrReferenceName, "shaOrReferenceName");
if (resetOptions.Has(ResetOptions.Mixed) && Info.IsBare)
{
throw new LibGit2Exception("Mixed reset is not allowed in a bare repository");
}
GitObject commit = Lookup(shaOrReferenceName, GitObjectType.Any, LookUpOptions.ThrowWhenNoGitObjectHasBeenFound | LookUpOptions.DereferenceResultToCommit | LookUpOptions.ThrowWhenCanNotBeDereferencedToACommit);
//TODO: Check for unmerged entries
string refToUpdate = Info.IsHeadDetached ? "HEAD" : Head.CanonicalName;
Refs.UpdateTarget(refToUpdate, commit.Sha);
if (resetOptions == ResetOptions.Soft)
{
return;
}
Index.ReplaceContentWithTree(((Commit)commit).Tree);
if (resetOptions == ResetOptions.Mixed)
{
return;
}
throw new NotImplementedException();
}
/// <summary>
/// Try to lookup an object by its <see cref = "ObjectId" /> and <see cref = "GitObjectType" />. If no matching object is found, null will be returned.
/// </summary>
/// <param name = "id">The id to lookup.</param>
/// <param name = "type">The kind of GitObject being looked up</param>
/// <returns>The <see cref = "GitObject" /> or null if it was not found.</returns>
public GitObject Lookup(ObjectId id, GitObjectType type = GitObjectType.Any)
{
Ensure.ArgumentNotNull(id, "id");
GitOid oid = id.Oid;
IntPtr obj;
int res;
if (id is AbbreviatedObjectId)
{
res = NativeMethods.git_object_lookup_prefix(out obj, handle, ref oid, (uint)((AbbreviatedObjectId)id).Length, type);
}
else
{
res = NativeMethods.git_object_lookup(out obj, handle, ref oid, type);
}
if (res == (int)GitErrorCode.GIT_ENOTFOUND || res == (int)GitErrorCode.GIT_EINVALIDTYPE)
{
return(null);
}
Ensure.Success(res);
if (id is AbbreviatedObjectId)
{
id = GitObject.ObjectIdOf(obj);
}
return(GitObject.CreateFromPtr(obj, id, this));
}
/// <summary>
/// Inserts a <see cref = "TagAnnotation"/> into the object database, pointing to a specific <see cref = "GitObject"/>.
/// </summary>
/// <param name="name">The name.</param>
/// <param name="target">The <see cref="GitObject"/> being pointed at.</param>
/// <param name="tagger">The tagger.</param>
/// <param name="message">The message.</param>
/// <returns>The created <see cref = "Commit"/>.</returns>
public virtual TagAnnotation CreateTag(string name, GitObject target, Signature tagger, string message)
{
string prettifiedMessage = Proxy.git_message_prettify(message);
ObjectId tagId = Proxy.git_tag_annotation_create(repo.Handle, name, target, tagger, prettifiedMessage);
return(repo.Lookup <TagAnnotation>(tagId));
}
/// <summary>
/// Creates a lightweight tag with the specified name.
/// </summary>
/// <param name = "name">The name.</param>
/// <param name = "objectish">Revparse spec for the target object.</param>
/// <param name = "allowOverwrite">True to allow silent overwriting a potentially existing tag, false otherwise.</param>
/// <param name = "tags">The <see cref="TagCollection"/> being worked with.</param>
public static Tag Add(this TagCollection tags, string name, string objectish, bool allowOverwrite = false)
{
Ensure.ArgumentNotNullOrEmptyString(objectish, "objectish");
GitObject objectToTag = tags.repo.Lookup(objectish, GitObjectType.Any, LookUpOptions.ThrowWhenNoGitObjectHasBeenFound);
return(tags.Add(name, objectToTag, allowOverwrite));
}
/// <summary>
/// Creates an annotated tag with the specified name.
/// </summary>
/// <param name="name">The name.</param>
/// <param name="objectish">Revparse spec for the target object.</param>
/// <param name="tagger">The tagger.</param>
/// <param name="message">The message.</param>
/// <param name="allowOverwrite">True to allow silent overwriting a potentially existing tag, false otherwise.</param>
public virtual Tag Add(string name, string objectish, Signature tagger, string message, bool allowOverwrite)
{
Ensure.ArgumentNotNullOrEmptyString(objectish, "target");
GitObject objectToTag = repo.Lookup(objectish, GitObjectType.Any, LookUpOptions.ThrowWhenNoGitObjectHasBeenFound);
return(Add(name, objectToTag, tagger, message, allowOverwrite));
}
private GitObject RetreiveTreeEntryTarget()
{
GitObject treeEntryTarget = repo.Lookup(targetOid);
//TODO: Warning submodules will appear as targets of type Commit
Ensure.ArgumentConformsTo(treeEntryTarget.GetType(), t => typeof(Blob).IsAssignableFrom(t) || typeof(Tree).IsAssignableFrom(t), "treeEntryTarget");
return(treeEntryTarget);
}
/// <summary>
/// Creates a lightweight tag with the specified name.
/// </summary>
/// <param name="name">The name.</param>
/// <param name="target">The target <see cref="GitObject"/>.</param>
/// <param name="allowOverwrite">True to allow silent overwriting a potentially existing tag, false otherwise.</param>
/// <returns>The added <see cref="Tag"/>.</returns>
public virtual Tag Add(string name, GitObject target, bool allowOverwrite = false)
{
Ensure.ArgumentNotNullOrEmptyString(name, "name");
Ensure.ArgumentNotNull(target, "target");
Proxy.git_tag_create_lightweight(repo.Handle, name, target, allowOverwrite);
return(this[name]);
}
private GitObject RetrieveObject(string shaOrReferenceName)
{
GitObject gitObj = repo.Lookup(shaOrReferenceName);
// TODO: Should we check the type? Git-log allows TagAnnotation oid as parameter. But what about Blobs and Trees?
EnsureGitObjectNotNull(shaOrReferenceName, gitObj);
return(gitObj);
}
private GitObject RetrieveTreeEntryTarget()
{
if (!Type.HasAny(new[] { GitObjectType.Tree, GitObjectType.Blob }))
{
throw new InvalidOperationException(string.Format(CultureInfo.InvariantCulture, "TreeEntry target of type '{0}' are not supported.", Type));
}
return(GitObject.BuildFrom(repo, targetOid, Type, Path));
}
private static void EnsureGitObjectNotNull(string shaOrReferenceName, GitObject gitObj)
{
if (gitObj != null)
{
return;
}
throw new LibGit2Exception(string.Format(CultureInfo.InvariantCulture,
"No valid git object pointed at by '{0}' exists in the repository.",
shaOrReferenceName));
}
/// <summary>
/// Updates the target of a direct reference.
/// </summary>
/// <param name="directRef">The direct reference which target should be updated.</param>
/// <param name="objectish">The revparse spec of the target.</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="directRef"/> reference.</param>
/// <returns>A new <see cref="Reference"/>.</returns>
public static Reference UpdateTarget(this ReferenceCollection refsColl, Reference directRef, string objectish, string logMessage = null)
{
Ensure.ArgumentNotNull(directRef, "directRef");
Ensure.ArgumentNotNull(objectish, "objectish");
GitObject target = refsColl.repo.Lookup(objectish);
Ensure.GitObjectIsNotNull(target, objectish);
return(refsColl.UpdateTarget(directRef, target.Id, logMessage));
}
private GitObject RetrieveTreeEntryTarget()
{
if (!Type.HasAny(new[] { GitObjectType.Tree, GitObjectType.Blob }))
{
throw new InvalidOperationException(string.Format("TreeEntry target of type '{0}' are not supported.", Type));
}
GitObject treeEntryTarget = repo.LookupTreeEntryTarget(targetOid, Path);
return(treeEntryTarget);
}
private GitObject RetrieveObjectToTag(string target)
{
GitObject objectToTag = repo.Lookup(target);
if (objectToTag == null)
{
throw new LibGit2Exception(String.Format(CultureInfo.InvariantCulture, "No object identified by '{0}' can be found in the repository.", target));
}
return(objectToTag);
}
/// <summary>
/// Updates the target of a direct reference.
/// </summary>
/// <param name="directRef">The direct reference which target should be updated.</param>
/// <param name="objectish">The revparse spec of the target.</param>
/// <param name="logMessage">The optional message to log in the <see cref="ReflogCollection"/></param>
/// <returns>A new <see cref="Reference"/>.</returns>
public virtual Reference UpdateTarget(Reference directRef, string objectish, string logMessage)
{
Ensure.ArgumentNotNull(directRef, "directRef");
Ensure.ArgumentNotNull(objectish, "objectish");
GitObject target = repo.Lookup(objectish);
Ensure.GitObjectIsNotNull(target, objectish);
return(UpdateTarget(directRef, target.Id, logMessage));
}
/// <summary>
/// Checkout the specified <see cref="Branch"/>, reference or SHA.
/// <para>
/// If the committishOrBranchSpec parameter resolves to a branch name, then the checked out HEAD will
/// will point to the branch. Otherwise, the HEAD will be detached, pointing at the commit sha.
/// </para>
/// </summary>
/// <param name="repository">The repository to act on</param>
/// <param name="committishOrBranchSpec">A revparse spec for the commit or branch to checkout.</param>
/// <param name="options"><see cref="CheckoutOptions"/> controlling checkout behavior.</param>
/// <returns>The <see cref="Branch"/> that was checked out.</returns>
public static Branch Checkout(IRepository repository, string committishOrBranchSpec, CheckoutOptions options)
{
Ensure.ArgumentNotNull(repository, "repository");
Ensure.ArgumentNotNullOrEmptyString(committishOrBranchSpec, "committishOrBranchSpec");
Ensure.ArgumentNotNull(options, "options");
Reference reference = null;
GitObject obj = null;
Branch branch = null;
try
{
repository.RevParse(committishOrBranchSpec, out reference, out obj);
}
catch (NotFoundException)
{
// If committishOrBranchSpec is not a local branch but matches a tracking branch
// in exactly one remote, use it. This is the "git checkout" command's default behavior.
// https://git-scm.com/docs/git-checkout#Documentation/git-checkout.txt-emgitcheckoutemltbranchgt
var remoteBranches = repository.Network.Remotes
.SelectMany(r => repository.Branches.Where(b =>
b.IsRemote &&
b.CanonicalName == $"refs/remotes/{r.Name}/{committishOrBranchSpec}"))
.ToList();
if (remoteBranches.Count == 1)
{
branch = repository.CreateBranch(committishOrBranchSpec, remoteBranches[0].Tip);
repository.Branches.Update(branch, b => b.TrackedBranch = remoteBranches[0].CanonicalName);
return(Checkout(repository, branch, options));
}
if (remoteBranches.Count > 1)
{
throw new AmbiguousSpecificationException($"'{committishOrBranchSpec}' matched multiple ({remoteBranches.Count}) remote tracking branches");
}
throw;
}
if (reference != null && reference.IsLocalBranch)
{
branch = repository.Branches[reference.CanonicalName];
return(Checkout(repository, branch, options));
}
Commit commit = obj.Peel <Commit>(true);
Checkout(repository, commit.Tree, options, committishOrBranchSpec);
return(repository.Head);
}
/// <summary>
/// Creates an annotated tag with the specified name.
/// </summary>
/// <param name="name">The name.</param>
/// <param name="target">The target <see cref="GitObject"/>.</param>
/// <param name="tagger">The tagger.</param>
/// <param name="message">The message.</param>
/// <param name="allowOverwrite">True to allow silent overwriting a potentially existing tag, false otherwise.</param>
/// <returns>The added <see cref="Tag"/>.</returns>
public virtual Tag Add(string name, GitObject target, Signature tagger, string message, bool allowOverwrite = false)
{
Ensure.ArgumentNotNullOrEmptyString(name, "name");
Ensure.ArgumentNotNull(target, "target");
Ensure.ArgumentNotNull(tagger, "tagger");
Ensure.ArgumentNotNull(message, "message");
string prettifiedMessage = Proxy.git_message_prettify(message, null);
Proxy.git_tag_create(repo.Handle, name, target, tagger, prettifiedMessage, allowOverwrite);
return(this[name]);
}
/// <summary>
/// Gets the <see cref="Stash"/> corresponding to the specified index (0 being the most recent one).
/// </summary>
public virtual Stash this[int index]
{
get
{
if (index < 0)
{
throw new ArgumentOutOfRangeException("index", "The passed index must be a positive integer.");
}
GitObject stashCommit = repo.Lookup(string.Format("stash@{{{0}}}", index), GitObjectType.Commit, LookUpOptions.None);
return(stashCommit == null ? null : new Stash(repo, stashCommit.Id, index));
}
}
private static ObjectId DereferenceToCommit(Repository repo, string identifier)
{
var options = LookUpOptions.DereferenceResultToCommit;
if (!AllowOrphanReference(repo, identifier))
{
options |= LookUpOptions.ThrowWhenNoGitObjectHasBeenFound;
}
// TODO: Should we check the type? Git-log allows TagAnnotation oid as parameter. But what about Blobs and Trees?
GitObject commit = repo.Lookup(identifier, GitObjectType.Any, options);
return(commit != null ? commit.Id : null);
}
private ObjectId Unabbreviate(ObjectId targetId)
{
if (!(targetId is AbbreviatedObjectId))
{
return(targetId);
}
GitObject obj = repo.Lookup(targetId);
if (obj == null)
{
Ensure.Success((int)GitErrorCode.GIT_ENOTFOUND);
}
return(obj.Id);
}
private GitObject RetrieveTreeEntryTarget()
{
switch (TargetType)
{
case TreeEntryTargetType.GitLink:
return(new GitLink(repo, targetOid));
case TreeEntryTargetType.Blob:
case TreeEntryTargetType.Tree:
return(GitObject.BuildFrom(repo, targetOid, TargetType.ToGitObjectType(), Path));
default:
throw new InvalidOperationException(string.Format(CultureInfo.InvariantCulture,
"TreeEntry target of type '{0}' is not supported.",
TargetType));
}
}
/// <summary>
/// Creates a lightweight tag with the specified name.
/// </summary>
/// <param name = "name">The name.</param>
/// <param name = "target">The target which can be sha or a canonical reference name.</param>
/// <param name = "allowOverwrite">True to allow silent overwriting a potentially existing tag, false otherwise.</param>
/// <returns></returns>
public Tag Create(string name, string target, bool allowOverwrite = false)
{
Ensure.ArgumentNotNullOrEmptyString(name, "name");
Ensure.ArgumentNotNullOrEmptyString(target, "target");
GitObject objectToTag = repo.Lookup(target, GitObjectType.Any, LookUpOptions.ThrowWhenNoGitObjectHasBeenFound);
int res;
using (var objectPtr = new ObjectSafeWrapper(objectToTag.Id, repo))
{
GitOid oid;
res = NativeMethods.git_tag_create_lightweight(out oid, repo.Handle, name, objectPtr.ObjectPtr, allowOverwrite);
}
Ensure.Success(res);
return(this[name]);
}
/// <summary>
/// Checkout the specified <see cref="Branch"/>, reference or SHA.
/// <para>
/// If the committishOrBranchSpec parameter resolves to a branch name, then the checked out HEAD will
/// will point to the branch. Otherwise, the HEAD will be detached, pointing at the commit sha.
/// </para>
/// </summary>
/// <param name="committishOrBranchSpec">A revparse spec for the commit or branch to checkout.</param>
/// <param name="checkoutModifiers"><see cref="CheckoutModifiers"/> controlling checkout behavior.</param>
/// <param name="onCheckoutProgress"><see cref="CheckoutProgressHandler"/> that checkout progress is reported through.</param>
/// <param name="checkoutNotifications"><see cref="CheckoutNotificationOptions"/> to manage checkout notifications.</param>
/// <returns>The <see cref="Branch"/> that was checked out.</returns>
public Branch Checkout(string committishOrBranchSpec, CheckoutModifiers checkoutModifiers, CheckoutProgressHandler onCheckoutProgress, CheckoutNotificationOptions checkoutNotifications)
{
Ensure.ArgumentNotNullOrEmptyString(committishOrBranchSpec, "committishOrBranchSpec");
var handles = Proxy.git_revparse_ext(Handle, committishOrBranchSpec);
if (handles == null)
{
Ensure.GitObjectIsNotNull(null, committishOrBranchSpec);
}
var objH = handles.Item1;
var refH = handles.Item2;
GitObject obj;
try
{
if (!refH.IsInvalid)
{
var reference = Reference.BuildFromPtr <Reference>(refH, this);
if (reference.IsLocalBranch())
{
Branch branch = Branches[reference.CanonicalName];
return(Checkout(branch, checkoutModifiers, onCheckoutProgress, checkoutNotifications));
}
}
obj = GitObject.BuildFrom(this, Proxy.git_object_id(objH), Proxy.git_object_type(objH),
PathFromRevparseSpec(committishOrBranchSpec));
}
finally
{
objH.Dispose();
refH.Dispose();
}
Commit commit = obj.DereferenceToCommit(true);
Checkout(commit.Tree, checkoutModifiers, onCheckoutProgress, checkoutNotifications, commit.Id.Sha, committishOrBranchSpec,
committishOrBranchSpec != "HEAD");
return(Head);
}
/// <summary>
/// Creates an annotated tag with the specified name.
/// </summary>
/// <param name = "name">The name.</param>
/// <param name = "target">The target which can be sha or a canonical reference name.</param>
/// <param name = "tagger">The tagger.</param>
/// <param name = "message">The message.</param>
/// <param name = "allowOverwrite">True to allow silent overwriting a potentially existing tag, false otherwise.</param>
/// <returns></returns>
public Tag Create(string name, string target, Signature tagger, string message, bool allowOverwrite = false)
{
Ensure.ArgumentNotNullOrEmptyString(name, "name");
Ensure.ArgumentNotNullOrEmptyString(target, "target");
Ensure.ArgumentNotNull(tagger, "tagger");
Ensure.ArgumentNotNull(message, "message");
GitObject objectToTag = RetrieveObjectToTag(target);
int res;
using (var objectPtr = new ObjectSafeWrapper(objectToTag.Id, repo))
{
GitOid oid;
res = NativeMethods.git_tag_create(out oid, repo.Handle, name, objectPtr.ObjectPtr, tagger.Handle, message, allowOverwrite);
}
Ensure.Success(res);
return(this[name]);
}
internal GitObject Lookup(string shaOrReferenceName, GitObjectType type, LookUpOptions lookUpOptions)
{
ObjectId id;
Reference reference = Refs[shaOrReferenceName];
if (reference != null)
{
id = reference.PeelToTargetObjectId();
}
else
{
ObjectId.TryParse(shaOrReferenceName, out id);
}
if (id == null)
{
if (lookUpOptions.Has(LookUpOptions.ThrowWhenNoGitObjectHasBeenFound))
{
Ensure.GitObjectIsNotNull(null, shaOrReferenceName);
}
return(null);
}
GitObject gitObj = Lookup(id, type);
if (lookUpOptions.Has(LookUpOptions.ThrowWhenNoGitObjectHasBeenFound))
{
Ensure.GitObjectIsNotNull(gitObj, shaOrReferenceName);
}
if (!lookUpOptions.Has(LookUpOptions.DereferenceResultToCommit))
{
return(gitObj);
}
return(gitObj.DereferenceToCommit(shaOrReferenceName, lookUpOptions.Has(LookUpOptions.ThrowWhenCanNotBeDereferencedToACommit)));
}
internal Reference UpdateHeadTarget <T>(T target, Signature signature, string logMessage)
{
Debug.Assert(signature != null);
if (target is ObjectId)
{
Proxy.git_repository_set_head_detached(repo.Handle, target as ObjectId, signature, logMessage);
}
else if (target is DirectReference || target is SymbolicReference)
{
Proxy.git_repository_set_head(repo.Handle, (target as Reference).CanonicalName, signature, logMessage);
}
else if (target is string)
{
var targetIdentifier = target as string;
if (Reference.IsValidName(targetIdentifier))
{
Proxy.git_repository_set_head(repo.Handle, targetIdentifier, signature, logMessage);
}
else
{
GitObject commit = repo.Lookup(targetIdentifier,
GitObjectType.Any,
LookUpOptions.ThrowWhenNoGitObjectHasBeenFound |
LookUpOptions.DereferenceResultToCommit |
LookUpOptions.ThrowWhenCanNotBeDereferencedToACommit);
Proxy.git_repository_set_head_detached(repo.Handle, commit.Id, signature, logMessage);
}
}
else
{
throw new ArgumentException(string.Format(CultureInfo.InvariantCulture,
"'{0}' is not a valid target type.", typeof(T)));
}
return(repo.Refs.Head);
}
internal GitObject LookupInternal(ObjectId id, GitObjectType type, FilePath knownPath)
{
Ensure.ArgumentNotNull(id, "id");
GitObjectSafeHandle obj = null;
try
{
obj = Proxy.git_object_lookup(handle, id, type);
if (obj == null)
{
return(null);
}
return(GitObject.BuildFrom(this, id, Proxy.git_object_type(obj), knownPath));
}
finally
{
obj.SafeDispose();
}
}
internal GitObject LookupInternal(ObjectId id, GitObjectType type, FilePath knownPath)
{
Ensure.ArgumentNotNull(id, "id");
GitOid oid = id.Oid;
GitObjectSafeHandle obj = null;
try
{
int res;
if (id is AbbreviatedObjectId)
{
res = NativeMethods.git_object_lookup_prefix(out obj, handle, ref oid, (uint)((AbbreviatedObjectId)id).Length, type);
}
else
{
res = NativeMethods.git_object_lookup(out obj, handle, ref oid, type);
}
if (res == (int)GitErrorCode.GIT_ENOTFOUND)
{
return(null);
}
Ensure.Success(res);
if (id is AbbreviatedObjectId)
{
id = GitObject.ObjectIdOf(obj);
}
return(GitObject.CreateFromPtr(obj, id, this, knownPath));
}
finally
{
obj.SafeDispose();
}
}
private ObjectId DereferenceToCommit(string identifier)
{
GitObject obj = RetrieveObject(identifier);
if (obj is Commit)
{
return(obj.Id);
}
if (obj is TagAnnotation)
{
return(DereferenceToCommit(((TagAnnotation)obj).Target.Sha));
}
if (obj is Blob || obj is Tree)
{
return(null);
}
throw new LibGit2Exception(string.Format(CultureInfo.InvariantCulture,
"The Git object pointed at by '{0}' can not be dereferenced to a commit.",
identifier));
}
