plumbing: commitgraph, fix types and handle commit-graph-chains

Unfortunately the original variant makes some incorrect typing
assumptions about commit-graphs which make handling graph chains
difficult to do correctly. This creates a new subpackage and deprecates
the old one. It then adds support commit graph chains.

Signed-off-by: Andrew Thornton <art27@cantab.net>

1 files changed, 9 insertions, 0 deletions

diff --git a/plumbing/format/commitgraph/encoder.go b/plumbing/format/commitgraph/encoder.go
index 674f52e..3176353 100644
--- a/plumbing/format/commitgraph/encoder.go
+++ b/plumbing/format/commitgraph/encoder.go
@@ -10,12 +10,18 @@ import (
 )

 

 // Encoder writes MemoryIndex structs to an output stream.

+//

+// Deprecated: This package uses the wrong types for Generation and Index in CommitData.

+// Use the v2 package instead.

 type Encoder struct {

 	io.Writer

 	hash hash.Hash

 }

 

 // NewEncoder returns a new stream encoder that writes to w.

+//

+// Deprecated: This package uses the wrong types for Generation and Index in CommitData.

+// Use the v2 package instead.

 func NewEncoder(w io.Writer) *Encoder {

 	h := hash.New(hash.CryptoType)

 	mw := io.MultiWriter(w, h)

@@ -23,6 +29,9 @@ func NewEncoder(w io.Writer) *Encoder {
 }

 

 // Encode writes an index into the commit-graph file

+//

+// Deprecated: This package uses the wrong types for Generation and Index in CommitData.

+// Use the v2 package instead.

 func (e *Encoder) Encode(idx Index) error {

 	// Get all the hashes in the input index

 	hashes := idx.Hashes()