object/id: Split files

1 files changed, 0 insertions, 150 deletions

diff --git a/object/id/algorithms.go b/object/id/algorithms.go
deleted file mode 100644
index f3540c42..00000000
--- a/object/id/algorithms.go
+++ /dev/null
@@ -1,150 +0,0 @@
-package objectid
-
-import (
-	"crypto/sha1" //#nosec gosec
-	"crypto/sha256"
-	"hash"
-)
-
-// maxObjectIDSize MUST be >= the largest supported algorithm size.
-const maxObjectIDSize = sha256.Size
-
-// Algorithm identifies the hash algorithm used for Git object IDs.
-type Algorithm uint8
-
-const (
-	AlgorithmUnknown Algorithm = iota
-	AlgorithmSHA1
-	AlgorithmSHA256
-)
-
-type algorithmDetails struct {
-	name       string
-	size       int
-	packHashID uint32
-	sum        func([]byte) ObjectID
-	new        func() hash.Hash
-	emptyTree  ObjectID
-}
-
-//nolint:gochecknoglobals
-var algorithmTable = [...]algorithmDetails{
-	AlgorithmUnknown: {},
-	AlgorithmSHA1: {
-		name:       "sha1",
-		size:       sha1.Size,
-		packHashID: 1,
-		sum: func(data []byte) ObjectID {
-			sum := sha1.Sum(data) //#nosec G401
-
-			var id ObjectID
-			copy(id.data[:], sum[:])
-			id.algo = AlgorithmSHA1
-
-			return id
-		},
-		new: sha1.New,
-	},
-	AlgorithmSHA256: {
-		name:       "sha256",
-		size:       sha256.Size,
-		packHashID: 2,
-		sum: func(data []byte) ObjectID {
-			sum := sha256.Sum256(data)
-
-			var id ObjectID
-			copy(id.data[:], sum[:])
-			id.algo = AlgorithmSHA256
-
-			return id
-		},
-		new: sha256.New,
-	},
-}
-
-var (
-	//nolint:gochecknoglobals
-	algorithmByName = map[string]Algorithm{}
-	//nolint:gochecknoglobals
-	supportedAlgorithms []Algorithm
-)
-
-func init() { //nolint:gochecknoinits
-	emptyTreeInput := []byte("tree 0\x00")
-
-	for algo := Algorithm(0); int(algo) < len(algorithmTable); algo++ {
-		info := &algorithmTable[algo]
-		if info.name == "" {
-			continue
-		}
-
-		info.emptyTree = info.sum(emptyTreeInput)
-		algorithmByName[info.name] = algo
-		supportedAlgorithms = append(supportedAlgorithms, algo)
-	}
-}
-
-// SupportedAlgorithms returns all object ID algorithms supported by furgit.
-// Do not mutate.
-func SupportedAlgorithms() []Algorithm {
-	return supportedAlgorithms
-}
-
-// ParseAlgorithm parses a canonical algorithm name (e.g. "sha1", "sha256").
-func ParseAlgorithm(s string) (Algorithm, bool) {
-	algo, ok := algorithmByName[s]
-
-	return algo, ok
-}
-
-// Size returns the hash size in bytes.
-func (algo Algorithm) Size() int {
-	return algo.info().size
-}
-
-// String returns the canonical algorithm name.
-func (algo Algorithm) String() string {
-	inf := algo.info()
-	if inf.name == "" {
-		return "unknown"
-	}
-
-	return inf.name
-}
-
-// HexLen returns the encoded hexadecimal length.
-func (algo Algorithm) HexLen() int {
-	return algo.Size() * 2
-}
-
-// PackHashID returns the Git pack/rev hash-id encoding for this algorithm.
-//
-// Unknown algorithms return 0.
-func (algo Algorithm) PackHashID() uint32 {
-	return algo.info().packHashID
-}
-
-// Sum computes an object ID from raw data using the selected algorithm.
-func (algo Algorithm) Sum(data []byte) ObjectID {
-	return algo.info().sum(data)
-}
-
-// New returns a new hash.Hash for this algorithm.
-func (algo Algorithm) New() (hash.Hash, error) {
-	newFn := algo.info().new
-	if newFn == nil {
-		return nil, ErrInvalidAlgorithm
-	}
-
-	return newFn(), nil
-}
-
-// EmptyTree returns the object ID of an empty tree ("tree 0\x00") for this
-// algorithm.
-func (algo Algorithm) EmptyTree() ObjectID {
-	return algo.info().emptyTree
-}
-
-func (algo Algorithm) info() algorithmDetails {
-	return algorithmTable[algo]
-}