Maker hasher public for now.

pkg/hasher/hasher.go

@@ -1,52 +0,0 @@
-// Copyright 2019 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-package hasher
-
-import (
-	"crypto/sha256"
-	"encoding/json"
-	"fmt"
-	"sort"
-)
-
-// SortArrayAndComputeHash sorts a string array and
-// returns a hash for it
-func SortArrayAndComputeHash(s []string) (string, error) {
-	sort.Strings(s)
-	data, err := json.Marshal(s)
-	if err != nil {
-		return "", err
-	}
-	return Encode(Hash(string(data)))
-}
-
-// Copied from https://github.com/kubernetes/kubernetes
-// /blob/master/pkg/kubectl/util/hash/hash.go
-func Encode(hex string) (string, error) {
-	if len(hex) < 10 {
-		return "", fmt.Errorf(
-			"input length must be at least 10")
-	}
-	enc := []rune(hex[:10])
-	for i := range enc {
-		switch enc[i] {
-		case '0':
-			enc[i] = 'g'
-		case '1':
-			enc[i] = 'h'
-		case '3':
-			enc[i] = 'k'
-		case 'a':
-			enc[i] = 'm'
-		case 'e':
-			enc[i] = 't'
-		}
-	}
-	return string(enc), nil
-}
-
-// Hash returns the hex form of the sha256 of the argument.
-func Hash(data string) string {
-	return fmt.Sprintf("%x", sha256.Sum256([]byte(data)))
-}

pkg/hasher/hasher_test.go

@@ -1,41 +0,0 @@
-// Copyright 2019 The Kubernetes Authors.
-// SPDX-License-Identifier: Apache-2.0
-
-package hasher_test
-
-import (
-	"testing"
-
-	. "sigs.k8s.io/kustomize/v3/pkg/hasher"
-)
-
-func TestSortArrayAndComputeHash(t *testing.T) {
-	array1 := []string{"a", "b", "c", "d"}
-	array2 := []string{"c", "b", "d", "a"}
-	h1, err := SortArrayAndComputeHash(array1)
-	if err != nil {
-		t.Errorf("unexpected error %v", err)
-	}
-	if h1 == "" {
-		t.Errorf("failed to hash %v", array1)
-	}
-	h2, err := SortArrayAndComputeHash(array2)
-	if err != nil {
-		t.Errorf("unexpected error %v", err)
-	}
-	if h2 == "" {
-		t.Errorf("failed to hash %v", array2)
-	}
-	if h1 != h2 {
-		t.Errorf("hash is not consistent with reordered list: %s %s", h1, h2)
-	}
-}
-
-func TestHash(t *testing.T) {
-	// hash the empty string to be sure that sha256 is being used
-	expect := "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855"
-	sum := Hash("")
-	if expect != sum {
-		t.Errorf("expected hash %q but got %q", expect, sum)
-	}
-}