added repocli

2026-03-02 09:07:57 +02:00
parent e67f42a821
commit 1b025180f0
25 changed files with 1320 additions and 0 deletions
@@ -0,0 +1,49 @@
+package repocli
+
+import (
+	"crypto/sha256"
+	"crypto/sha512"
+	"encoding/hex"
+	"strings"
+)
+
+func SHA256Digest(src []byte) string {
+	hasher := sha256.New()
+	hasher.Write(src)
+	sum := hasher.Sum(nil)
+	return "sha256:" + hex.EncodeToString(sum)
+}
+
+func SHA512Digest(src []byte) string {
+	hasher := sha512.New()
+	hasher.Write(src)
+	sum := hasher.Sum(nil)
+	return "sha512:" + hex.EncodeToString(sum)
+}
+
+const (
+	Undefined int = iota
+	SHA256
+	SHA512
+)
+
+func DigestType(digest string) int {
+	var err error
+	var typ int
+	digest = strings.ToLower(digest)
+	digest = strings.TrimPrefix(digest, "sha256:")
+	digest = strings.TrimPrefix(digest, "sha512:")
+	decoded, err := hex.DecodeString(digest)
+	if err != nil {
+		return Undefined
+	}
+	switch len(decoded) {
+	case 32:
+		typ = SHA256
+	case 64:
+		typ = SHA512
+	default:
+		typ = Undefined
+	}
+	return typ
+}