public GitRef(string commit, GitObjectType objectType, string name, string subject)
{
Commit = commit;
ObjectType = objectType;
Name = name;
Subject = subject;
}
private static ObjectHash GetObjectHash(GitObjectType type, byte[] contentBytes)
{
var bytesWithHeader = GetBytesWithHeader(type, contentBytes);
var hash = new ObjectHash(Hash.Create(bytesWithHeader));
return(hash);
}
private static unsafe int Write(
IntPtr backend,
ref GitOid oid,
IntPtr data,
UIntPtr len,
GitObjectType type)
{
long length = ConverToLong(len);
OdbBackend odbBackend = MarshalOdbBackend(backend);
if (odbBackend == null)
{
return((int)GitErrorCode.Error);
}
try
{
using (var stream = new UnmanagedMemoryStream((byte *)data, length))
{
return(odbBackend.Write(new ObjectId(oid), stream, length, type.ToObjectType()));
}
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
return((int)GitErrorCode.Error);
}
}
internal static async ValueTask <GitObject> FromBucketAsync(GitRepository repository, GitObjectBucket rdr, GitId id, GitObjectType type = GitObjectType.None)
{
GitObjectType tp;
if (type == GitObjectType.None)
{
tp = await rdr.ReadTypeAsync().ConfigureAwait(false);
}
else
{
tp = type;
}
switch (tp)
{
case GitObjectType.Commit:
return(new GitCommit(repository, rdr, id));
case GitObjectType.Tree:
return(new GitTree(repository, rdr, id));
case GitObjectType.Blob:
return(new GitBlob(repository, rdr, id));
case GitObjectType.Tag:
return(new GitTagObject(repository, rdr, id));
default:
throw new ArgumentOutOfRangeException(nameof(type));
}
}
public static byte[] GetBytesWithHeader(GitObjectType type, byte[] contentBytes)
{
string header;
if (type == GitObjectType.Commit)
{
header = "commit " + contentBytes.Length + '\0';
}
else if (type == GitObjectType.Tag)
{
header = "tag " + contentBytes.Length + '\0';
}
else if (type == GitObjectType.Tree)
{
header = "tree " + contentBytes.Length + '\0';
}
else if (type == GitObjectType.Blob)
{
header = "blob " + contentBytes.Length + '\0';
}
else
{
throw new NotImplementedException();
}
var headerBytes = Encoding.ASCII.GetBytes(header);
var resultBuffer = new byte[headerBytes.Length + contentBytes.Length];
Array.Copy(headerBytes, resultBuffer, headerBytes.Length);
Array.Copy(contentBytes, 0, resultBuffer, headerBytes.Length, contentBytes.Length);
return(resultBuffer);
}
public MockOdbBackendStream(MockOdbBackend backend, GitObjectType objectType, long length)
: base(backend)
{
m_type = objectType;
m_length = length;
m_hash = new SHA1CryptoServiceProvider();
}
public override int Write(byte[] oid, Stream dataStream, long length, GitObjectType objectType, out byte[] finalOid)
{
using (var sha1 = new SHA1CryptoServiceProvider())
{
finalOid = sha1.ComputeHash(dataStream);
dataStream.Seek(0, SeekOrigin.Begin);
}
if (m_objectIdToContent.ContainsKey(finalOid))
{
return(GIT_EEXISTS);
}
if (length > (long)int.MaxValue)
{
return(GIT_ERROR);
}
byte[] buffer = new byte[length];
int bytesRead = dataStream.Read(buffer, 0, (int)length);
if (bytesRead != (int)length)
{
return(GIT_ERROR);
}
m_objectIdToContent.Add(finalOid, new MockGitObject(finalOid, objectType, buffer));
return(GIT_OK);
}
internal static GitObject CreateFromPtr(IntPtr obj, ObjectId id, Repository repo)
{
try
{
GitObjectType type = NativeMethods.git_object_type(obj);
switch (type)
{
case GitObjectType.Commit:
return(Commit.BuildFromPtr(obj, id, repo));
case GitObjectType.Tree:
return(Tree.BuildFromPtr(obj, id, repo));
case GitObjectType.Tag:
return(TagAnnotation.BuildFromPtr(obj, id, repo));
case GitObjectType.Blob:
return(Blob.BuildFromPtr(obj, id, repo));
default:
throw new LibGit2Exception(string.Format(CultureInfo.InvariantCulture, "Unexpected type '{0}' for object '{1}'.", type, id));
}
}
finally
{
NativeMethods.git_object_close(obj);
}
}
private static int WriteStream(
out IntPtr stream_out,
IntPtr backend,
UIntPtr length,
GitObjectType type)
{
stream_out = IntPtr.Zero;
OdbBackend odbBackend = GCHandle.FromIntPtr(Marshal.ReadIntPtr(backend, GitOdbBackend.GCHandleOffset)).Target as OdbBackend;
if (odbBackend != null &&
length.ToUInt64() < long.MaxValue)
{
OdbBackendStream stream;
try
{
int toReturn = odbBackend.WriteStream((long)length.ToUInt64(), type, out stream);
if (0 == toReturn)
{
stream_out = stream.GitOdbBackendStreamPointer;
}
return(toReturn);
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
}
}
return((int)GitErrorCode.Error);
}
public GitItem(int mode, GitObjectType objectType, string guid, string name)
{
Mode = mode;
ObjectType = objectType;
Guid = guid;
FileName = Name = name;
}
private static int WriteStream(
out IntPtr stream_out,
IntPtr backend,
long len,
GitObjectType type)
{
stream_out = IntPtr.Zero;
OdbBackend odbBackend = MarshalOdbBackend(backend);
if (odbBackend == null)
{
return((int)GitErrorCode.Error);
}
ObjectType objectType = type.ToObjectType();
try
{
OdbBackendStream stream;
int toReturn = odbBackend.WriteStream(len, objectType, out stream);
if (toReturn == 0)
{
stream_out = stream.GitOdbBackendStreamPointer;
}
return(toReturn);
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
return((int)GitErrorCode.Error);
}
}
/// <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));
}
public GitItem(int mode, GitObjectType objectType, ObjectId objectId, string name)
{
Mode = mode;
ObjectType = objectType;
ObjectId = objectId;
FileName = Name = name;
}
protected GitObjectBase(ObjectHash hash, GitObjectType type)
{
Hash = hash;
Type = type;
_hashCode = hash.GetHashCode();
}
private unsafe static int Read(
out IntPtr buffer_p,
out UIntPtr len_p,
out GitObjectType type_p,
IntPtr backend,
ref GitOid oid)
{
buffer_p = IntPtr.Zero;
len_p = UIntPtr.Zero;
type_p = GitObjectType.Bad;
OdbBackend odbBackend = MarshalOdbBackend(backend);
if (odbBackend == null)
{
return((int)GitErrorCode.Error);
}
Stream dataStream = null;
try
{
ObjectType objectType;
int toReturn = odbBackend.Read(new ObjectId(oid), out dataStream, out objectType);
if (toReturn != 0)
{
return(toReturn);
}
// Caller is expected to give us back a stream created with the Allocate() method.
var memoryStream = dataStream as UnmanagedMemoryStream;
if (memoryStream == null)
{
return((int)GitErrorCode.Error);
}
len_p = new UIntPtr((ulong)memoryStream.Capacity);
type_p = objectType.ToGitObjectType();
memoryStream.Seek(0, SeekOrigin.Begin);
buffer_p = new IntPtr(memoryStream.PositionPointer);
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
return((int)GitErrorCode.Error);
}
finally
{
if (dataStream != null)
{
dataStream.Dispose();
}
}
return((int)GitErrorCode.Ok);
}
private unsafe static int Read(
out IntPtr buffer_p,
out UIntPtr len_p,
out GitObjectType type_p,
IntPtr backend,
ref GitOid oid)
{
buffer_p = IntPtr.Zero;
len_p = UIntPtr.Zero;
type_p = GitObjectType.Bad;
OdbBackend odbBackend = GCHandle.FromIntPtr(Marshal.ReadIntPtr(backend, GitOdbBackend.GCHandleOffset)).Target as OdbBackend;
if (odbBackend != null)
{
Stream dataStream = null;
GitObjectType objectType;
try
{
int toReturn = odbBackend.Read(oid.Id, out dataStream, out objectType);
if (0 == toReturn)
{
// Caller is expected to give us back a stream created with the Allocate() method.
UnmanagedMemoryStream memoryStream = dataStream as UnmanagedMemoryStream;
if (null == memoryStream)
{
return((int)GitErrorCode.Error);
}
len_p = new UIntPtr((ulong)memoryStream.Capacity);
type_p = objectType;
memoryStream.Seek(0, SeekOrigin.Begin);
buffer_p = new IntPtr(memoryStream.PositionPointer);
}
return(toReturn);
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
}
finally
{
if (null != dataStream)
{
dataStream.Dispose();
}
}
}
return((int)GitErrorCode.Error);
}
public async ValueTask <(GitId, GitObjectType)> ReadObjectIdAsync()
{
if (_objectId is not null)
{
return(_objectId, _type);
}
var(bb, eol) = await Inner.ReadUntilEolFullAsync(AcceptedEols, null, 7 /* "object " */ + GitId.MaxHashLength * 2 + 2 /* ALL EOL */).ConfigureAwait(false);
if (bb.IsEof || eol == BucketEol.None || !bb.StartsWithASCII("object "))
{
throw new GitBucketException($"Expected 'object' record at start of tag in '{Inner.Name}'");
}
if (GitId.TryParse(bb.Slice(7, eol), out var id))
{
_objectId = id;
}
else
{
throw new GitBucketException($"Expected valid 'object' record at start of tag in '{Inner.Name}'");
}
(bb, eol) = await Inner.ReadUntilEolFullAsync(AcceptedEols, null, 5 /* "type " */ + 6 /* "commit" */ + 2 /* ALL EOL */).ConfigureAwait(false);
if (bb.IsEof || eol == BucketEol.None || !bb.StartsWithASCII("type "))
{
_objectId = null;
throw new GitBucketException($"Expected 'type' record of tag in '{Inner.Name}'");
}
bb = bb.Slice(5, eol);
if (bb.EqualsASCII("commit"))
{
_type = GitObjectType.Commit;
}
else if (bb.EqualsASCII("tree"))
{
_type = GitObjectType.Tree;
}
else if (bb.EqualsASCII("blob"))
{
_type = GitObjectType.Blob;
}
else if (bb.EqualsASCII("tag"))
{
_type = GitObjectType.Tag;
}
else
{
throw new GitBucketException($"Expected valid 'type' record in tag in '{Inner.Name}'");
}
return(_objectId, _type);
}
public MockGitObject(byte[] objectId, GitObjectType objectType, byte[] data)
{
if (objectId.Length != 20)
{
throw new InvalidOperationException();
}
this.ObjectId = objectId;
this.ObjectType = objectType;
this.Data = data;
}
public void CanRetrieveEntries(string path, string expectedAttributes, GitObjectType expectedType, string expectedSha)
{
using (var repo = new Repository(BareTestRepoPath))
{
TreeDefinition td = TreeDefinition.From(repo.Head.Tip.Tree);
TreeEntryDefinition ted = td[path];
Assert.Equal(ToMode(expectedAttributes), ted.Mode);
Assert.Equal(expectedType, ted.Type);
Assert.Equal(new ObjectId(expectedSha), ted.TargetId);
}
}
public override async ValueTask <GitObjectType> ReadTypeAsync()
{
await PrepareState(frame_state.type_done).ConfigureAwait(false);
if ((_type == GitObjectType.None || _type > GitObjectType.Tag) &&
reader is GitObjectBucket gob)
{
return(_type = await gob.ReadTypeAsync().ConfigureAwait(false));
}
Debug.Assert(_type >= GitObjectType.Commit && _type <= GitObjectType.Tag, "Bad Git Type");
return(_type);
}
public override async ValueTask <GitObjectType> ReadTypeAsync()
{
if (_type != GitObjectType.None)
{
return(_type);
}
if (_inner == null)
{
_inner = await Repository.ObjectRepository.ResolveById(Id).ConfigureAwait(false) ?? throw new InvalidOperationException($"Can't fetch {Id}");
}
return(_type = await _inner.ReadTypeAsync().ConfigureAwait(false));
}
internal unsafe TreeEntry(TreeEntryHandle entry, ObjectId parentTreeId, Repository repo, string parentPath)
{
this.parentTreeId = parentTreeId;
this.repo = repo;
targetOid = Proxy.git_tree_entry_id(entry);
GitObjectType treeEntryTargetType = Proxy.git_tree_entry_type(entry);
TargetType = treeEntryTargetType.ToTreeEntryTargetType();
target = new Lazy <GitObject>(RetrieveTreeEntryTarget);
Mode = Proxy.git_tree_entry_attributes(entry);
Name = Proxy.git_tree_entry_name(entry);
path = new Lazy <string>(() => Tree.CombinePath(parentPath, Name));
}
internal TreeEntry(SafeHandle obj, ObjectId parentTreeId, Repository repo, FilePath parentPath)
{
this.parentTreeId = parentTreeId;
this.repo = repo;
targetOid = Proxy.git_tree_entry_id(obj);
GitObjectType treeEntryTargetType = Proxy.git_tree_entry_type(obj);
TargetType = treeEntryTargetType.ToTreeEntryTargetType();
target = new Lazy <GitObject>(RetrieveTreeEntryTarget);
Mode = Proxy.git_tree_entry_attributes(obj);
Name = Proxy.git_tree_entry_name(obj);
path = new Lazy <string>(() => System.IO.Path.Combine(parentPath.Native, Name));
}
public static TreeEntryTargetType ToTreeEntryTargetType(this GitObjectType type)
{
switch (type)
{
case GitObjectType.Commit:
return(TreeEntryTargetType.GitLink);
case GitObjectType.Tree:
return(TreeEntryTargetType.Tree);
case GitObjectType.Blob:
return(TreeEntryTargetType.Blob);
default:
throw new InvalidOperationException(string.Format("Cannot map {0} to a TreeEntryTargetType.", type));
}
}
/// <summary>
/// Try to lookup an object by its sha or a reference canonical name and <see cref = "GitObjectType" />. If no matching object is found, null will be returned.
/// </summary>
/// <param name = "shaOrReferenceName">The sha or reference canonical name to lookup.</param>
/// <param name = "type">The kind of <see cref = "GitObject" /> being looked up</param>
/// <returns>The <see cref = "GitObject" /> or null if it was not found.</returns>
public GitObject Lookup(string shaOrReferenceName, GitObjectType type = GitObjectType.Any)
{
ObjectId id;
if (ObjectId.TryParse(shaOrReferenceName, out id))
{
return(Lookup(id, type));
}
Reference reference = Refs[shaOrReferenceName];
if (!IsReferencePeelable(reference))
{
return(null);
}
return(Lookup(reference.ResolveToDirectReference().TargetIdentifier, type));
}
public override int Read(byte[] oid, out Stream data, out GitObjectType objectType)
{
data = null;
objectType = GitObjectType.Bad;
MockGitObject gitObject;
if (m_objectIdToContent.TryGetValue(oid, out gitObject))
{
data = Allocate(gitObject.Data.LongLength);
data.Write(gitObject.Data, 0, gitObject.Data.Length);
objectType = gitObject.ObjectType;
return(GIT_OK);
}
return(GIT_ENOTFOUND);
}
internal static Type AsType(this GitObjectType type)
{
switch (type)
{
case GitObjectType.Commit:
return(typeof(GitCommit));
case GitObjectType.Tree:
return(typeof(GitTree));
case GitObjectType.Blob:
return(typeof(GitBlob));
case GitObjectType.Tag:
return(typeof(GitTag));
default:
throw new ArgumentOutOfRangeException(nameof(type));
}
}
public static ObjectType ToObjectType(this GitObjectType type)
{
switch (type)
{
case GitObjectType.Commit:
return(ObjectType.Commit);
case GitObjectType.Tree:
return(ObjectType.Tree);
case GitObjectType.Blob:
return(ObjectType.Blob);
case GitObjectType.Tag:
return(ObjectType.Tag);
default:
throw new InvalidOperationException(string.Format("Cannot map {0} to a ObjectType.", type));
}
}
internal static GitObject BuildFrom(Repository repo, ObjectId id, GitObjectType type, FilePath path)
{
switch (type)
{
case GitObjectType.Commit:
return(new Commit(repo, id));
case GitObjectType.Tree:
return(new Tree(repo, id, path));
case GitObjectType.Tag:
return(new TagAnnotation(repo, id));
case GitObjectType.Blob:
return(new Blob(repo, id));
default:
throw new LibGit2SharpException(string.Format(CultureInfo.InvariantCulture, "Unexpected type '{0}' for object '{1}'.", type, id));
}
}
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)));
}
private static unsafe int Read(
out IntPtr buffer_p,
out UIntPtr len_p,
out GitObjectType type_p,
IntPtr backend,
ref GitOid oid)
{
buffer_p = IntPtr.Zero;
len_p = UIntPtr.Zero;
type_p = GitObjectType.Bad;
OdbBackend odbBackend = MarshalOdbBackend(backend);
if (odbBackend == null)
{
return (int)GitErrorCode.Error;
}
Stream dataStream = null;
try
{
ObjectType objectType;
int toReturn = odbBackend.Read(new ObjectId(oid), out dataStream, out objectType);
if (toReturn != 0)
{
return toReturn;
}
// Caller is expected to give us back a stream created with the Allocate() method.
var memoryStream = dataStream as UnmanagedMemoryStream;
if (memoryStream == null)
{
return (int)GitErrorCode.Error;
}
len_p = new UIntPtr((ulong)memoryStream.Capacity);
type_p = objectType.ToGitObjectType();
memoryStream.Seek(0, SeekOrigin.Begin);
buffer_p = new IntPtr(memoryStream.PositionPointer);
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
return (int)GitErrorCode.Error;
}
finally
{
if (dataStream != null)
{
dataStream.Dispose();
}
}
return (int)GitErrorCode.Ok;
}
/// <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");
var oid = id.Oid;
IntPtr obj;
var 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);
return GitObject.CreateFromPtr(obj, id, this);
}
/// <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)
{
return LookupInternal(id, type, null);
}
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();
}
}
/// <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>
/// Requests that this backend read an object.
/// </summary>
public abstract int Read(byte[] oid,
out Stream data,
out GitObjectType objectType);
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));
}
public static extern int git_tag_create_f(out GitOid oid, RepositorySafeHandle repo, string name, ref GitOid target, GitObjectType type, GitSignature signature, string message);
public static extern int git_object_lookup_prefix(out IntPtr obj, RepositorySafeHandle repo, ref GitOid id, uint len, GitObjectType type);
public void CanRetrieveEntries(string path, string expectedAttributes, GitObjectType expectedType, string expectedSha)
{
using (var repo = new Repository(BareTestRepoPath))
{
TreeDefinition td = TreeDefinition.From(repo.Head.Tip.Tree);
TreeEntryDefinition ted = td[path];
Assert.Equal(ToMode(expectedAttributes), ted.Mode);
Assert.Equal(expectedType, ted.Type);
Assert.Equal(new ObjectId(expectedSha), ted.TargetId);
}
}
private static int WriteStream(
out IntPtr stream_out,
IntPtr backend,
UIntPtr length,
GitObjectType type)
{
stream_out = IntPtr.Zero;
OdbBackend odbBackend = GCHandle.FromIntPtr(Marshal.ReadIntPtr(backend, GitOdbBackend.GCHandleOffset)).Target as OdbBackend;
ObjectType objectType = type.ToObjectType();
if (odbBackend != null &&
length.ToUInt64() < long.MaxValue)
{
OdbBackendStream stream;
try
{
int toReturn = odbBackend.WriteStream((long)length.ToUInt64(), objectType, out stream);
if (0 == toReturn)
{
stream_out = stream.GitOdbBackendStreamPointer;
}
return toReturn;
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
}
}
return (int)GitErrorCode.Error;
}
private static unsafe int Write(
ref GitOid oid,
IntPtr backend,
IntPtr data,
UIntPtr len,
GitObjectType type)
{
OdbBackend odbBackend = GCHandle.FromIntPtr(Marshal.ReadIntPtr(backend, GitOdbBackend.GCHandleOffset)).Target as OdbBackend;
ObjectType objectType = type.ToObjectType();
if (odbBackend != null &&
len.ToUInt64() < long.MaxValue)
{
try
{
using (UnmanagedMemoryStream stream = new UnmanagedMemoryStream((byte*)data, (long)len.ToUInt64()))
{
byte[] finalOid;
int toReturn = odbBackend.Write(oid.Id, stream, (long)len.ToUInt64(), objectType, out finalOid);
if (0 == toReturn)
{
oid.Id = finalOid;
}
return toReturn;
}
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
}
}
return (int)GitErrorCode.Error;
}
private static unsafe int ReadPrefix(
out GitOid out_oid,
out IntPtr buffer_p,
out UIntPtr len_p,
out GitObjectType type_p,
IntPtr backend,
ref GitOid short_oid,
UIntPtr len)
{
out_oid = default(GitOid);
buffer_p = IntPtr.Zero;
len_p = UIntPtr.Zero;
type_p = GitObjectType.Bad;
OdbBackend odbBackend = GCHandle.FromIntPtr(Marshal.ReadIntPtr(backend, GitOdbBackend.GCHandleOffset)).Target as OdbBackend;
if (odbBackend != null)
{
byte[] oid;
Stream dataStream = null;
ObjectType objectType;
try
{
// The length of short_oid is described in characters (40 per full ID) vs. bytes (20)
// which is what we care about.
byte[] shortOidArray = new byte[(long)len >> 1];
Array.Copy(short_oid.Id, shortOidArray, shortOidArray.Length);
int toReturn = odbBackend.ReadPrefix(shortOidArray, out oid, out dataStream, out objectType);
if (0 == toReturn)
{
// Caller is expected to give us back a stream created with the Allocate() method.
UnmanagedMemoryStream memoryStream = dataStream as UnmanagedMemoryStream;
if (null == memoryStream)
{
return (int)GitErrorCode.Error;
}
out_oid.Id = oid;
len_p = new UIntPtr((ulong)memoryStream.Capacity);
type_p = objectType.ToGitObjectType();
memoryStream.Seek(0, SeekOrigin.Begin);
buffer_p = new IntPtr(memoryStream.PositionPointer);
}
return toReturn;
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
}
finally
{
if (null != dataStream)
{
dataStream.Dispose();
}
}
}
return (int)GitErrorCode.Error;
}
private static int ReadHeader(
out UIntPtr len_p,
out GitObjectType type_p,
IntPtr backend,
ref GitOid oid)
{
len_p = UIntPtr.Zero;
type_p = GitObjectType.Bad;
OdbBackend odbBackend = GCHandle.FromIntPtr(Marshal.ReadIntPtr(backend, GitOdbBackend.GCHandleOffset)).Target as OdbBackend;
if (odbBackend != null)
{
int length;
ObjectType objectType;
try
{
int toReturn = odbBackend.ReadHeader(oid.Id, out length, out objectType);
if (0 == toReturn)
{
len_p = new UIntPtr((uint)length);
type_p = objectType.ToGitObjectType();
}
return toReturn;
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
}
}
return (int)GitErrorCode.Error;
}
/// <summary>
/// Try to lookup an object by its sha or a reference canonical name and <see cref = "GitObjectType" />. If no matching object is found, null will be returned.
/// </summary>
/// <param name = "shaOrReferenceName">The sha or reference canonical name to lookup.</param>
/// <param name = "type">The kind of <see cref = "GitObject" /> being looked up</param>
/// <returns>The <see cref = "GitObject" /> or null if it was not found.</returns>
public GitObject Lookup(string shaOrReferenceName, GitObjectType type = GitObjectType.Any)
{
return Lookup(shaOrReferenceName, type, LookUpOptions.None);
}
/// <summary>
/// Requests that this backend write an object to the backing store. Returns a stream so that the caller can write
/// the data in chunks.
/// </summary>
public abstract int WriteStream(long length,
GitObjectType objectType,
out OdbBackendStream stream);
/// <summary>
/// Requests that this backend read an object's header (length and object type) but not its contents.
/// </summary>
public abstract int ReadHeader(byte[] oid,
out int length,
out GitObjectType objectType);
/// <summary>
/// Requests that this backend write an object to the backing store. The backend may need to compute the object ID
/// and return it to the caller.
/// </summary>
public abstract int Write(byte[] oid,
Stream dataStream,
long length,
GitObjectType objectType,
out byte[] finalOid);
/// <summary>
/// Requests that this backend read an object. The object ID may not be complete (may be a prefix).
/// </summary>
public abstract int ReadPrefix(byte[] shortOid,
out byte[] oid,
out Stream data,
out GitObjectType objectType);
private unsafe static int ReadPrefix(
out GitOid out_oid,
out IntPtr buffer_p,
out UIntPtr len_p,
out GitObjectType type_p,
IntPtr backend,
ref GitOid short_oid,
UIntPtr len)
{
out_oid = default(GitOid);
buffer_p = IntPtr.Zero;
len_p = UIntPtr.Zero;
type_p = GitObjectType.Bad;
OdbBackend odbBackend = MarshalOdbBackend(backend);
if (odbBackend == null)
{
return (int)GitErrorCode.Error;
}
UnmanagedMemoryStream memoryStream = null;
try
{
var shortSha = ObjectId.ToString(short_oid.Id, (int) len);
ObjectId oid;
ObjectType objectType;
int toReturn = odbBackend.ReadPrefix(shortSha, out oid, out memoryStream, out objectType);
if (toReturn != 0)
{
return toReturn;
}
if (memoryStream == null)
{
return (int)GitErrorCode.Error;
}
out_oid.Id = oid.RawId;
len_p = new UIntPtr((ulong)memoryStream.Capacity);
type_p = objectType.ToGitObjectType();
memoryStream.Seek(0, SeekOrigin.Begin);
buffer_p = new IntPtr(memoryStream.PositionPointer);
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
return (int)GitErrorCode.Error;
}
finally
{
if (memoryStream != null)
{
memoryStream.Dispose();
}
}
return (int)GitErrorCode.Ok;
}
/// <summary>
/// Try to lookup an object by its sha or a reference canonical name and <see cref = "GitObjectType" />. If no matching object is found, null will be returned.
/// </summary>
/// <param name = "shaOrReferenceName">The sha or reference canonical name to lookup.</param>
/// <param name = "type">The kind of <see cref = "GitObject" /> being looked up</param>
/// <returns>The <see cref = "GitObject" /> or null if it was not found.</returns>
public GitObject Lookup(string shaOrReferenceName, GitObjectType type = GitObjectType.Any)
{
ObjectId id;
if (ObjectId.TryParse(shaOrReferenceName, out id))
{
return Lookup(id, type);
}
Reference reference = Refs[shaOrReferenceName];
if (!IsReferencePeelable(reference))
{
return null;
}
return Lookup(reference.ResolveToDirectReference().TargetIdentifier, type);
}
private static int ReadHeader(
out UIntPtr len_p,
out GitObjectType type_p,
IntPtr backend,
ref GitOid oid)
{
len_p = UIntPtr.Zero;
type_p = GitObjectType.Bad;
OdbBackend odbBackend = MarshalOdbBackend(backend);
if (odbBackend == null)
{
return (int)GitErrorCode.Error;
}
try
{
int length;
ObjectType objectType;
int toReturn = odbBackend.ReadHeader(new ObjectId(oid), out length, out objectType);
if (toReturn != 0)
{
return toReturn;
}
len_p = new UIntPtr((uint)length);
type_p = objectType.ToGitObjectType();
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
return (int)GitErrorCode.Error;
}
return (int)GitErrorCode.Ok;
}
internal GitObjectMetadata(long size, GitObjectType type)
{
this.Size = size;
this.type = type;
}
private static unsafe int Write(
IntPtr backend,
ref GitOid oid,
IntPtr data,
UIntPtr len,
GitObjectType type)
{
long length = ConverToLong(len);
OdbBackend odbBackend = MarshalOdbBackend(backend);
if (odbBackend == null)
{
return (int)GitErrorCode.Error;
}
try
{
using (var stream = new UnmanagedMemoryStream((byte*)data, length))
{
return odbBackend.Write(new ObjectId(oid), stream, length, type.ToObjectType());
}
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
return (int)GitErrorCode.Error;
}
}
/// <summary>
/// Try to lookup an object by its sha or a reference canonical name and <see cref="GitObjectType"/>. If no matching object is found, null will be returned.
/// </summary>
/// <param name = "shaOrReferenceName">The sha or reference canonical name to lookup.</param>
/// <param name = "type">The kind of <see cref="GitObject"/> being looked up</param>
/// <returns>The <see cref = "GitObject" /> or null if it was not found.</returns>
public GitObject Lookup(string shaOrReferenceName, GitObjectType type = GitObjectType.Any)
{
ObjectId id = ObjectId.CreateFromMaybeSha(shaOrReferenceName);
if (id != null)
{
return Lookup(id, type);
}
var reference = Refs[shaOrReferenceName];
if (!IsReferencePeelable(reference))
{
return null;
}
return Lookup(reference.ResolveToDirectReference().TargetIdentifier, type);
}
private static int WriteStream(
out IntPtr stream_out,
IntPtr backend,
UIntPtr len,
GitObjectType type)
{
stream_out = IntPtr.Zero;
long length = ConverToLong(len);
OdbBackend odbBackend = MarshalOdbBackend(backend);
if (odbBackend == null)
{
return (int)GitErrorCode.Error;
}
ObjectType objectType = type.ToObjectType();
try
{
OdbBackendStream stream;
int toReturn = odbBackend.WriteStream(length, objectType, out stream);
if (toReturn == 0)
{
stream_out = stream.GitOdbBackendStreamPointer;
}
return toReturn;
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
return (int)GitErrorCode.Error;
}
}
private static unsafe int Read(
out IntPtr buffer_p,
out UIntPtr len_p,
out GitObjectType type_p,
IntPtr backend,
ref GitOid oid)
{
buffer_p = IntPtr.Zero;
len_p = UIntPtr.Zero;
type_p = GitObjectType.Bad;
OdbBackend odbBackend = GCHandle.FromIntPtr(Marshal.ReadIntPtr(backend, GitOdbBackend.GCHandleOffset)).Target as OdbBackend;
if (odbBackend != null)
{
Stream dataStream = null;
ObjectType objectType;
try
{
int toReturn = odbBackend.Read(oid.Id, out dataStream, out objectType);
if (0 == toReturn)
{
// Caller is expected to give us back a stream created with the Allocate() method.
UnmanagedMemoryStream memoryStream = dataStream as UnmanagedMemoryStream;
if (null == memoryStream)
{
return (int)GitErrorCode.Error;
}
len_p = new UIntPtr((ulong)memoryStream.Capacity);
type_p = objectType.ToGitObjectType();
memoryStream.Seek(0, SeekOrigin.Begin);
buffer_p = new IntPtr(memoryStream.PositionPointer);
}
return toReturn;
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
}
finally
{
if (null != dataStream)
{
dataStream.Dispose();
}
}
}
return (int)GitErrorCode.Error;
}
private static unsafe int ReadPrefix(
out GitOid out_oid,
out IntPtr buffer_p,
out UIntPtr len_p,
out GitObjectType type_p,
IntPtr backend,
ref GitOid short_oid,
UIntPtr len)
{
out_oid = default(GitOid);
buffer_p = IntPtr.Zero;
len_p = UIntPtr.Zero;
type_p = GitObjectType.Bad;
OdbBackend odbBackend = MarshalOdbBackend(backend);
if (odbBackend == null)
{
return (int)GitErrorCode.Error;
}
Stream dataStream = null;
try
{
// The length of short_oid is described in characters (40 per full ID) vs. bytes (20)
// which is what we care about.
var oidLen = (int)len;
// Ensure we allocate enough space to cope with odd-sized prefix
int arraySize = (oidLen + 1) >> 1;
var shortOidArray = new byte[arraySize];
Array.Copy(short_oid.Id, shortOidArray, arraySize);
byte[] oid;
ObjectType objectType;
int toReturn = odbBackend.ReadPrefix(shortOidArray, oidLen, out oid, out dataStream, out objectType);
if (toReturn != 0)
{
return toReturn;
}
// Caller is expected to give us back a stream created with the Allocate() method.
var memoryStream = dataStream as UnmanagedMemoryStream;
if (memoryStream == null)
{
return (int)GitErrorCode.Error;
}
out_oid.Id = oid;
len_p = new UIntPtr((ulong)memoryStream.Capacity);
type_p = objectType.ToGitObjectType();
memoryStream.Seek(0, SeekOrigin.Begin);
buffer_p = new IntPtr(memoryStream.PositionPointer);
}
catch (Exception ex)
{
Proxy.giterr_set_str(GitErrorCategory.Odb, ex);
return (int)GitErrorCode.Error;
}
finally
{
if (null != dataStream)
{
dataStream.Dispose();
}
}
return (int)GitErrorCode.Ok;
}
