public static GitObjectBase ReadGitObject(string repositoryPath, ObjectHash hash)
{
var gitObject = PackReader.GetObject(hash);
if (gitObject != null)
{
return(gitObject);
}
var fileContent = HashContent.FromFile(repositoryPath, hash.ToString());
var contentIndex = fileContent.AsSpan(7).IndexOf <byte>(0) + 8;
if (IsCommit(fileContent))
{
return(new Commit(hash, fileContent.AsSpan(contentIndex).ToArray()));
}
if (IsTree(fileContent))
{
return(new Tree(hash, fileContent.AsMemory(contentIndex)));
}
if (IsTag(fileContent))
{
return(new Tag(hash, fileContent.AsMemory(contentIndex)));
}
// TODO blobs probably not working atm
if (IsBlob(fileContent))
{
return(new Blob(hash, fileContent.AsMemory(contentIndex)));
}
return(null);
}
public static Tree ReadTree(string repositoryPath, ObjectHash hash)
{
var tree = PackReader.GetTree(hash);
if (tree != null)
{
return(tree);
}
var fileContent = HashContent.FromFile(repositoryPath, hash.ToString());
if (IsTree(fileContent))
{
return(new Tree(hash,
fileContent.AsMemory(fileContent.AsSpan(5).IndexOf <byte>(0) + 6)));
}
return(null);
}
public static Commit ReadCommit(string repositoryPath, ObjectHash hash)
{
var commit = PackReader.GetCommit(repositoryPath, hash);
if (commit != null)
{
return(commit);
}
var fileContent = HashContent.FromFile(repositoryPath, hash.ToString());
if (IsCommit(fileContent))
{
return(new Commit(hash,
fileContent.AsMemory(fileContent.AsSpan(7).IndexOf <byte>(0) + 8).ToArray()));
}
throw new ArgumentException("Not a commit: " + hash);
}
static Dictionary <ObjectHash, ObjectHash> FixDefectiveCommits(string vcsPath, List <ObjectHash> defectiveCommits)
{
var rewrittenCommitHashes = new Dictionary <ObjectHash, ObjectHash>();
foreach (var commit in CommitWalker.CommitsInOrder(vcsPath))
{
if (rewrittenCommitHashes.ContainsKey(commit.Hash))
{
continue;
}
// Rewrite this commit
byte[] newCommitBytes;
if (defectiveCommits.Contains(commit.Hash))
{
var fixedTreeHash = WriteFixedTree(vcsPath, GitObjectFactory.ReadTree(vcsPath, commit.TreeHash));
newCommitBytes = Commit.GetSerializedCommitWithChangedTreeAndParents(commit, fixedTreeHash,
CorrectParents(commit.Parents, rewrittenCommitHashes).ToList());
}
else
{
newCommitBytes = Commit.GetSerializedCommitWithChangedTreeAndParents(commit, commit.TreeHash,
CorrectParents(commit.Parents, rewrittenCommitHashes).ToList());
}
var fileObjectBytes = GitObjectFactory.GetBytesWithHeader(GitObjectType.Commit, newCommitBytes);
var newCommitHash = new ObjectHash(Hash.Create(fileObjectBytes));
if (newCommitHash != commit.Hash && !rewrittenCommitHashes.ContainsKey(commit.Hash))
{
HashContent.WriteFile(vcsPath, fileObjectBytes, newCommitHash.ToString());
rewrittenCommitHashes.Add(commit.Hash, newCommitHash);
}
}
return(rewrittenCommitHashes);
}