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authorPaulo Gomes <pjbgf@linux.com>2023-03-07 23:31:29 +0000
committerPaulo Gomes <pjbgf@linux.com>2023-03-08 00:14:59 +0000
commit9822ad8573e374421a79c096d8f1dfa91366fb02 (patch)
treee3adb42646511378112cb05461bb8154f010ddee /plumbing/format/commitgraph/encoder.go
parent99e2f85843878671b028d4d01bd4668676226dd1 (diff)
downloadgo-git-9822ad8573e374421a79c096d8f1dfa91366fb02.tar.gz
*: Support variable length plumbing.Hash
The variable length for plumbing.Hash is defined at build time, blocked by tag sha256. This approach was a trade-off between keeping backwards compatibility while making progress towards supporting SHA256 with a small amount of changes. Relates to the SHA256 implementation, defined in #706. Signed-off-by: Paulo Gomes <pjbgf@linux.com>
Diffstat (limited to 'plumbing/format/commitgraph/encoder.go')
-rw-r--r--plumbing/format/commitgraph/encoder.go7
1 files changed, 3 insertions, 4 deletions
diff --git a/plumbing/format/commitgraph/encoder.go b/plumbing/format/commitgraph/encoder.go
index bcf7d03..f61025b 100644
--- a/plumbing/format/commitgraph/encoder.go
+++ b/plumbing/format/commitgraph/encoder.go
@@ -1,7 +1,6 @@
package commitgraph
import (
- "crypto"
"io"
"github.com/go-git/go-git/v5/plumbing"
@@ -17,7 +16,7 @@ type Encoder struct {
// NewEncoder returns a new stream encoder that writes to w.
func NewEncoder(w io.Writer) *Encoder {
- h := hash.New(crypto.SHA1)
+ h := hash.New(hash.CryptoType)
mw := io.MultiWriter(w, h)
return &Encoder{mw, h}
}
@@ -31,7 +30,7 @@ func (e *Encoder) Encode(idx Index) error {
hashToIndex, fanout, extraEdgesCount := e.prepare(idx, hashes)
chunkSignatures := [][]byte{oidFanoutSignature, oidLookupSignature, commitDataSignature}
- chunkSizes := []uint64{4 * 256, uint64(len(hashes)) * 20, uint64(len(hashes)) * 36}
+ chunkSizes := []uint64{4 * 256, uint64(len(hashes)) * hash.Size, uint64(len(hashes)) * 36}
if extraEdgesCount > 0 {
chunkSignatures = append(chunkSignatures, extraEdgeListSignature)
chunkSizes = append(chunkSizes, uint64(extraEdgesCount)*4)
@@ -183,6 +182,6 @@ func (e *Encoder) encodeExtraEdges(extraEdges []uint32) (err error) {
}
func (e *Encoder) encodeChecksum() error {
- _, err := e.Write(e.hash.Sum(nil)[:20])
+ _, err := e.Write(e.hash.Sum(nil)[:hash.Size])
return err
}