package index import ( "errors" "os" "time" "gopkg.in/src-d/go-git.v4/plumbing" ) var ( // ErrUnsupportedVersion is returned by Decode when the idxindex file // version is not supported. ErrUnsupportedVersion = errors.New("Unsuported version") indexSignature = []byte{'D', 'I', 'R', 'C'} treeExtSignature = []byte{'T', 'R', 'E', 'E'} resolveUndoExtSignature = []byte{'R', 'E', 'U', 'C'} ) // Stage during merge type Stage int const ( // Merged is the default stage, fully merged Merged Stage = 1 // AncestorMode is the base revision AncestorMode Stage = 1 // OurMode is the first tree revision, ours OurMode Stage = 2 // TheirMode is the second tree revision, theirs TheirMode Stage = 3 ) // Index contains the information about which objects are currently checked out // in the worktree, having information about the working files. Changes in // worktree are detected using this Index. The Index is also used during merges type Index struct { Version uint32 Entries []Entry Cache *Tree ResolveUndo *ResolveUndo } // Entry represents a single file (or stage of a file) in the cache. An entry // represents exactly one stage of a file. If a file path is unmerged then // multiple Entry instances may appear for the same path name. type Entry struct { // Hash is the SHA1 of the represented file Hash plumbing.Hash // Name is the Entry path name relative to top level directory Name string // CreatedAt time when the tracked path was created CreatedAt time.Time // ModifiedAt time when the tracked path was changed ModifiedAt time.Time // Dev and Inode of the tracked path Dev, Inode uint32 // Mode of the path Mode os.FileMode // UID and GID, userid and group id of the owner UID, GID uint32 // Size is the length in bytes for regular files Size uint32 // Stage on a merge is defines what stage is representing this entry // https://git-scm.com/book/en/v2/Git-Tools-Advanced-Merging Stage Stage // SkipWorktree used in sparse checkouts // https://git-scm.com/docs/git-read-tree#_sparse_checkout SkipWorktree bool // IntentToAdd record only the fact that the path will be added later // https://git-scm.com/docs/git-add ("git add -N") IntentToAdd bool } // Tree contains pre-computed hashes for trees that can be derived from the // index. It helps speed up tree object generation from index for a new commit. type Tree struct { Entries []TreeEntry } // TreeEntry entry of a cached Tree type TreeEntry struct { // Path component (relative to its parent directory) Path string // Entries is the number of entries in the index that is covered by the tree // this entry represents Entries int // Trees is the number that represents the number of subtrees this tree has Trees int // Hash object name for the object that would result from writing this span // of index as a tree. Hash plumbing.Hash } // ResolveUndo when a conflict is resolved (e.g. with "git add path"), these // higher stage entries will be removed and a stage-0 entry with proper // resolution is added. When these higher stage entries are removed, they are // saved in the resolve undo extension type ResolveUndo struct { Entries []ResolveUndoEntry } // ResolveUndoEntry contains the information about a conflict when is resolved type ResolveUndoEntry struct { Path string Stages map[Stage]plumbing.Hash }