1 files changed, 27 insertions, 0 deletions
diff --git a/repository/algorithm.go b/repository/algorithm.go
new file mode 100644
index 00000000..22326cbd
--- /dev/null
+++ b/repository/algorithm.go
@@ -0,0 +1,27 @@
+package repository
+
+import (
+	"fmt"
+
+	"codeberg.org/lindenii/furgit/config"
+	"codeberg.org/lindenii/furgit/objectid"
+)
+
+func detectObjectAlgorithm(cfg *config.Config) (objectid.Algorithm, error) {
+	algoName := cfg.Lookup("extensions", "", "objectformat").Value
+	if algoName == "" {
+		algoName = objectid.AlgorithmSHA1.String()
+	}
+
+	algo, ok := objectid.ParseAlgorithm(algoName)
+	if !ok {
+		return objectid.AlgorithmUnknown, fmt.Errorf("repository: unsupported object format %q", algoName)
+	}
+
+	return algo, nil
+}
+
+// Algorithm returns the repository object ID algorithm.
+func (repo *Repository) Algorithm() objectid.Algorithm {
+	return repo.algo
+}